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Home My WebLink AboutSTORM SEWER & WATER MAIN IMPROVEMENTS/S DUBUQUE ST/2011• • Kywyj •. WTA X I N IMPROVEMENTS/ S DUBUQUE ST/ -Z l - /a ,30 /o ° 7JwL - /a S- �ur,.• Se}dRr � C.l)alx� Mw,� �- M{JPo�emtn� -s/ ` ON � S / orrn O� c)or rac l` � 215i m(arrti do /d- +1C Car15'E�✓'ut'i';6�. 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Ju b c�c�ic�e li l� 8 AFC- /a 'f CCRtsol('4,ur, /< -Form Sealer l I it i I 4 I i L I i i I I Lj �-P S� -reLt- ao�a_ X.-s'.11 Q.CC2p� ;na 44E.. oov-V, C' 4k)2 S4t'.te4- arid LvrJe - (Y�w; h Tm�rovcxner i s �� of ec�U. I /'tail Prepared by: Brian Boelk, Sr. Civil Engineer, 410 E. Washington St., Iowa City, IA 52240, (319)356 -5437 RESOLUTION NO. 12 -298 RESOLUTION SETTING A PUBLIC HEARING ON JULY 10, 2012 ON PLANS, SPECIFICATIONS, FORM OF CONTRACT, AND ESTIMATE OF COST I -OR THE CONSTRUCTION OF THE S. DUBUQUE STREET STORM SEWER AND WATER MAIN IMPROVEMENTS PROJECT, DIRECTING CITY CLERK TO PUBLISH NOTICE OF SAID HEARING, AND DIRECTING THE CITY ENGINEER TO PLACE SAID PLANS ON FILE FOR PUBLIC INSPECTION. WHEREAS, funds for this project are available in the Stormwater Utility account #7700. BE IT RESOLVED BY THE COUNCIL OF THE CITY OF IOWA CITY, IOWA: That a public hearing on the plans, specifications, form of contract, and estimate of cost for the construction of the above - mentioned project is to be held on the 10th day of July, 2012, at 7:00 p.m. in the Emma J. Harvat Hall, City Hall, Iowa City, Iowa, or if said meeting is cancelled, at the next meeting of the City Council thereafter as posted by the City Clerk. 2. That the City Clerk is hereby authorized and directed to publish notice of the public hearing for the above -named project in a newspaper published at least once weekly and having a general circulation in the City, not less than four (4) nor more than twenty (20) days before said hearing. 3. That the copy of the plans, specifications, form of contract, and estimate of cost for the construction of the above -named project is hereby ordered placed on file by the City Engineer in the office of the City Clerk for public inspection. Passed and approved this 19th day of June _'20 12 ATTEST: CITY CLERK Pweng/restsdubuquestss - setph.doc 6112 � n MAYOR ZA by / City Attorney's Office Resolution No. 12 -298 Page 2 It was moved by Mims and seconded by Champion the Resolution be adopted, and upon roll call there were: AYES: x x x x x x x NAYS: ABSENT: Champion Dickens Dobyns Hayek Mims Payne Throgmorton ENGINEER'S OPINION OF PROBABLE COST S. DUBUQUE STREET STORM SEWER AND WATER MAIN IMPROVEMENTS NO. ITEM UNIT QTY UNIT COST ITEM TOTAL 1 REMOVAL OF PAVEMENT SY 1,387.00 $15.00 $20,805.00 2 REMOVAL OF DEBRIS CY 63.00 $15.00 $945.00 3 REMOVE PARKING METER POSTS & FOOTINGS EA 10.00 $100.00 $1,000.00 4 INSTALL PARKING METER POST W/ PCC FOOTING EA 10.00 $150.00 $1,500.00 5 HMA PAVEMENT MILLING SY 2,242.00 $5.00 $11,210.00 6 ASPHALT REMOVAL, DRIVEWAY AND ALLEY SY 35.00 $15.00 $525.00 7 CLEAN & PREPARATION OF BASE MILE 0.15 $4,000.00 $600.00 8 HMA (IM ESAL) BASE, 1/2" TON 182.00 $85.00 $15,470.00 9 HMA (IM ESAL) SURFACE, 1/2 ", NO ERIC TON 182.00 $85.00 $15,470.00 10 PCC BASE REPAIR SY 652.00 $60,00 $39,120.00 11 SIDEWALK, 4" PCC SF 941.00 $4.00 $3,764.00 12 SIDEAWLK & DRIVE, 6" PCC SF 1,212.00 $6.00 $7,272.00 13 DETECTABLE WARNING PANEL, CAST IRON SF 108.00 $50.00 $5,400.00 14 PCC PAVEMENT, 7" PARKING SY 250.00 $60.00 $15,000.00 15 IPERVIOUS PCC PAVEMENT, 7" SY 180.00 $90.00 $16,200.00 16 REMOVE & REPLACE CURB AND GUTTER, PCC, 2' LF 634.00 $30.00 $19,020.00 17 REMOVAL OF INTAKE EA 4.00 $1,000.00 $4,000.00 18 REMOVAL OF STORM SEWER LF 144.00 $20.00 $2,880.00 19 STORM SEWERCONNF,CTION EA 3.00 $750.00 $2,250.00 20 IN'T'AKE, SW -507 EA 2.00 $3,500.00 $7,000.00 21 INTAKE, SW -512 EA 2.00 $1,000.00 $2,000.00 22 INTAKE, SW -541 EA 3.00 $4,500.00 $13,500.00 23 INTAKE EXTENSION UNIT, SW -542 EA 1.00 $1,000.00 $1,000.00 24 STORM SEWER, 15" RCP LF 134.00 $100.00 $13,400.00 25 STORM SEWER, 18" RCP LF 56.00 $125.00 $7,000.00 26 STORM SEWER, 24" RCP LF 340.00 $135.00 $45,900.00 27 ABANDON WATER MAIN LS 1.00 $1,500.00 $1,500.00 28 WATER MAIN, 6" PVC, TRENCHLESS LF 337.00 $65.00 $21,905,00 29 WATER SERVICE, CONNECTION EA 9.00 $1,000.00 $9,000.00 30 WATER MAIN ACCESSORIES LS 1.00 $3,500.00 $3,500.00 31 FIRE HYDRANT ASSEMBLY EA 1.00 $3,500.00 $3,500.00 32 STABILIZE SLOPE, RIP RAP TON 200.00 $40.00 $8,000.00 33 FINAL GRADING AND RESTORATION LS 1.00 $4,000.00 $4,000.00 34 TRAFFIC CONTROL LS 1.00 $4,000.00 $4,000.00 35 FLAGGERS DAY 15.00 $295.00 $4,425.00 36 EROSION CONTROL LS 1.00 $3,000.00 $3,000.00 37 MOBILIZATION LS 1.00 $20,000.00 $20,000.00 TO'PAL ESTIMATE $355,061 cost estimatexls Combined CITY OF IOWA CITY DEPARTMENT OF PUBLIC WORKS ENGINEERING DIVISION PLANS, SPECIFICATIONS, PROPOSAL AND CONTRACT FOR THE S. DUBUQUE STREET STORM SEWER AND WATER MAIN IMPROVEMENTS PROJECT IOWA CITY, IOWA I hereby certify that this engineering document was prepared by me or under my direct personal supervision and that I am a duly licensed Professional Engineer under the laws of the State of Iowa. SIGNED: Brian A. Boelk, PE, CPESC Sr. Civil Engineer Iowa Reg. No. 16503 My license renewal date is December 31, 2012. DATE: SPECIFICATIONS TABLE OF CONTENTS TITLE SHEET TABLE OF CONTENTS NOTICE TO BIDDERS ........... NOTE TO BIDDERS .............. FORMOF PROPOSAL ............................ ............................... BIDBOND ................................................ ............................... FORM OF AGREEMENT ....................... ............................... PERFORMANCE AND PAYMENT BOND ............................ CONTRACT COMPLIANCE (ANTI- DISCRIMINATION REQUIREMENTS) .............. GENERAL CONDITIONS ........................... Page Number .... AF -1 NB -1 FP-9 BB -1 AG -1 PBA ........I —.... GC -1 SUPPLEMENTARY CONDITIONS .......................................... ............................... SC -1 RESTRICTION ON NON - RESIDENT BIDDING ON NON - FEDERAL -AID PROJECTS........................................................................ ............................... R -1 TECHNICAL SECTION DIVISION 1 - GENERAL REQUIREMENTS Section 01010 Summary of the Work .......................... ............................... 01010 -1 Section 01025 Measurement and Payment ................. ............................... 01025 -1 Section 01310 Progress and Schedules ...................... ............................... 01310 -1 Section 01570 Traffic Control and Construction Facilities ........................... 01570 -1 DIVISION 2 - SITE WORK Section 02050 Demolitions, Removals and Abandonments.... ..... ............. 02050 -1 Section 02100 Site Preparation ................................... ............................... 02100 -1 Section 02220 Earth Excavation, Backfill, Fill and Grading ........................ 02220 -1 Section 02270 Slope Protection and Erosion Control .. ............................... 02270 -1 Section 02510 Asphalt Cement Concrete Paving ........ ............................... 02510 -1 Section 02518 Pervious PCC Pavement ..................... ............................... 02518 -1 Section 02520 Portland Cement Concrete Paving ....... ............................... 02520 -1 Section 02524 Curb Ramps ......................................... ............................... 02524 -1 Section 02660 Water Distribution ................................ ............................... 02660 -1 Section 02665 Public Water Distribution ..................... ............................... 02665 -1 Section02700 Sewers ................................................. ............................... 02700-1 Section 02751 Directional Boring and Drilling .............. ............................... 02751 -1 Section 02900 Landscaping ........................................ ............................... 02900 -1 NOTICE TO BIDDERS S. DUBUQUE STREET STORM SEWER AND WATER MAIN IMPROVEMENTS PROJECT Sealed proposals will be received by the City Clerk of the City of Iowa City, Iowa, until 2:30 P.M. on the 26th day of July 2012. Sealed proposals will be opened immediately thereafter by the City Engineer or designee. Bids submitted by fax machine shall not be deemed a "sealed bid" for purposes of this Project. Proposals received after this deadline will be returned to the bidder unopened. Proposals will be acted upon by the City Council at a meeting to be held in the Emma J. Harvat Hall at 7:00 P.M. on the 31st day of July, 2012, or at special meeting called for that purpose. The Project will involve the following: Removal of existing storm sewer, pavement, debris, and abandonment of existing water main. Installation of new storm sewer, new water main, and PCC pavement. Installation of pervious PCC pavement HMA milling and overlay. All work is to be done in strict compliance with the plans and specifications prepared by City of Iowa City Engineering Division of Iowa City, Iowa, which have heretofore been approved by the City Council, and are on file for public examination in the Office of the City Clerk. Each proposal shall be completed on a form furnished by the City and must be accompanied in a sealed envelope, separate from the one containing the proposal, by a bid bond executed by a corporation authorized to contract as a surety in the State of Iowa, in the sum of 10% of the bid. The bid security shall be made payable to the TREASURER OF THE CITY OF IOWA CITY, IOWA, and shall be forfeited to the City of Iowa City in the event the successful bidder fails to enter into a contract within ten (10) calendar days of the City Council's award of the contract and post bond satisfactory to the City ensuring the faithful performance of the contract and mainte- nance of said Project, if required, pursuant to the provisions of this notice and the other contract documents. Bid bonds of the lowest two or more bidders may be retained for a period of not to exceed fifteen (15) calendar days following award of the contract, or until rejection is made. Other bid bonds will be returned after the canvass and tabulation of bids is completed and reported to the City Council. The successful bidder will be required to furnish a bond in an amount equal to one hundred percent (100 %) of the contract price, said bond to be issued by a responsible surety approved by the AF -1 City, and shall guarantee the prompt payment of all materials and labor, and also protect and save harmless the City from all claims and damages of any kind caused directly or indirectly by the operation of the contract, and shall also guarantee the maintenance of the improvement for a period of five (5) year(s) from and after its completion and formal acceptance by the City Council. The following limitations shall apply to this Project: Early Start Date: August 13, 2012 Completion Date: November 2, 2012 Liquidated Damages: $750 per day The plans, specifications and proposed contract documents may be examined at the office of the City Clerk. Copies of said plans and specifications and form of proposal blanks may be secured at the Office of the City Engineer of the City of Iowa City, 410 E. Washington Street, Iowa City, Iowa, by bona fide bidders. A $30 refundable fee is required for each set of plans and specifications provided to bidders or other interested persons. The fee shall be in the form of a check, made payable to Treasurer of the City of Iowa City. The refund will be issued 2 weeks after bid opening if re- usable plans and specifications are returned to the City of Iowa City. Prospective bidders are advised that the City of Iowa City desires to employ minority contractors and subcontractors on City projects. A listing of minority contractors can be obtained from the Iowa Department of Inspections and Appeals at (515) 281 -5796 and the Iowa Department of Transportation Contracts Office at (515) 239- 1422. Bidders shall list on the Form of Proposal the names of persons, firms, companies or other parties with whom the bidder intends to subcontract. This list shall include the type of work and approximate subcontract amount(s). The Contractor awarded the contract shall submit a list on the Form of Agreement of the proposed subcontractors, together with quantities, unit prices and extended dollar amounts. By virtue of statutory authority, preference must be given to products and provisions grown and coal produced within the State of Iowa, and to Iowa domestic labor, to the extent lawfully required under Iowa Statutes. The Iowa reciprocal resident bidder preference law applies to this Project. The City reserves the right to reject any or all proposals, and also reserves the right to waive technicalities and irregularities. Published upon order of the City Council of Iowa City, Iowa. MARIAN K. KARR, CITY CLERK AF -2 NOTE TO BIDDERS 1. The successful bidder and all subcontractors are required to submit at least 4 days prior to award three references involving similar projects, including at least one municipal reference. Award of the bid or use of specific subcontractors may be denied if sufficient favorable references are not verified or may be denied based on past experience on projects with the City of Iowa City. 2. References shall be addressed to the City Engineer and include the name, address and phone number of the contact person, for City verification. 3. Bid submittals are: Envelope 1: Envelope 2: Bid Bond Form of Proposal NB -1 FORM OF PROPOSAL S. DUBUQUE STREET STORM SEWER AND WATER MAIN IMPROVEMENTS PROJECT CITY OF IOWA CITY NOTICE TO BIDDERS: PLEASE DO NOT USE THE FORM OF PROPOSAL INCLUDED IN THE BOUND VOLUME OF THE SPECIFICATIONS. SEPARATE COPIES OF THIS PROPOSAL ARE CONTAINED WITHIN THE BACK COVER OF THIS DOCUMENT. Name of Bidder Address of Bidder TO: City Clerk City of Iowa City City Hall 410 E. Washington St. Iowa City, IA 52240., The undersigned bidder submits herewith bid security in the amount of $ in accordance with the terms set forth in the "Project. Specifications.'," The undersigned bidder, having examined and determined the scope of the Contract Documents, hereby proposes to provide the required labor, services, materials and equipment and to perform the Project as described in the Contract Documents, including Addenda , and , and to do all work at the prices set forth herein. We further propose to do all "Extra Work" which may be required to complete the work contemplated, at unit prices or lump sums to be agreed upon in writing prior to starting such work. FP -1 EXTENDED AMOUNT ESTIMATED UNIT ITEM DESCRIPTION UNIT QUANTITY PRICE 1. Removal of Pavement SY 1387 $ 2. Removal of Debris CY 63 3. Remove Parking Meter Poles & Footings EA 10 4. Install Parking Meter Post w/ PCC Footing EA 10 5. HMA Pavement Milling SY 2242 6. Asphalt Removal, Driveway & Alley SY 35 7. Clean & Preparation of Base MILE .15 8. HMA (1 M ESAL) Base, %' TON 182 9. HMA (1M ESAL) Surface, % ", No Fric TON 182 FP -1 EXTENDED AMOUNT 10. PCC Base Repair SY 652 11. Sidewalk, 4" PCC SF 941 12. Sidewalk & Drive, 6" PCC SF 1212 13. Detectable Warning Panel, Cast Iron SF 108 14. PCC Pavement, 7" Parking SY 250 15. Pervious PCC Pavement, 7" SY 180 16. Remove & Replace Curb and Gutter, PCC, 2' LF 634 17. Removal of Intake EA 4 18. Removal of Storm Sewer LF 144 19. Storm Sewer Connection EA 3 20. Intake, SW -507 EA 2 21. Intake, SW -512 EA 2 22. Intake, SW -541 EA 3 23. Intake Extension Unit, SW -542 EA 1 24. Storm Sewer, 15" RCP LF 134 25. Storm Sewer, 18" RCP LF 56 26. Storm Sewer, 24" RCP LF 340 27. Abandon Water Main LS 1 28. Water Main, 6" PVC, Trenchless LF 337 29. Water Services, Connection EA 9 30. Water Main Accessories LS 1 31. Fire Hydrant Assembly EA 1 32. Stabilize Slope, Rip Rap TON 200 31 Final Grading & Restoration LS 1 34. Traffic Control LS 1 35. Flaggers DAY 15 36, Erosion Control LS 1 37. Mobilization LS 1 mm The names of those persons, firms, companies or other parties with whom we intend to enter into a subcontract, together with the type of subcontracted work and approximate dollar amount of the subcontract, are as follows: NOTE: All subcontractors are subject to approval by City. The undersigned bidder certifies that this proposal is made in good faith, and without collusion or connection with any other person or persons bidding on the work. The undersigned bidder states that this proposal is made in conformity with the Contract Documents and agrees that, in the event of any discrepancies or differences between any conditions of this proposal and the Contract Documents prepared by the City of,lowa City, the more specific shall prevail. Firm: Signature: Printed Name: Title: Address: Phone: Contact: FP -3 z ON , as Principal, and , as Surety declare that we are held and are firmly bound unto the City of Iowa City, Iowa, hereinafter called "OWNER," in the sum of Dollars ($ ) to pay said sum as herein provided. We as Principal and Surety further promise and declare that these obligations shall bind our heirs, executors, administrators, and successors jointly and severally. This obligation is conditioned on the Principal submission of the accompanying bid, dated for Project. NOW, THEREFORE, (a) If said Bid shall be rejected, or in the alternate, (b) If said Bid shall be accepted and the Principal shall execute and deliver a contract in the form specified, and the Principal shall then furnish a bond for the Principal's faithful performance of said Project, and for the payment of all persons performing labor or furnishing materials in connection therewith, and shall in all other respects perform the Project, as agreed to by the City's acceptance of said Bid, then this obligation shall be void. Otherwise this obligation shall remain in full force and effect, provided that the liability of the Surety for any and all claims hereunder shall, in no event, exceed the amount of the obligation stated herein. By virtue of statutory authority, the full amount of this bid bond shall be forfeited to the Owner in the event that the Principal fails to execute the contract and provide the bond, as provided in the Project specifications or as required by law. The Surety, for value received, hereby stipulates and agrees that the obligations of said Surety and its bond shall in no way be impaired or affected by any extension of the time within which the Owner may accept such Bid or may execute such contract documents, and said Surety does hereby waive notice of any such time extension. The Principal and the Surety hereto execute this bid bond this day of A.D., 20_ Witness Witness EM (Seal) Principal By (Title) (Seal) Surety By (Attorney -in -fact) Attach Power -of- Attorney WIN tl DIA ; : 1 THIS AGREEMENT is made and entered into by and between the City of Iowa City, Iowa ( "City "), and ( "Contractor "). Whereas the City has prepared certain plans, specifications, proposal and bid documents dated the day of 20_, for the Project ('Project'), and Whereas, said plans, specifications, proposal and bid documents accurately and fully describe the terms and conditions upon which the Contractor is willing to perform the Project. NOW, THEREFORE, IT IS AGREED: 1. The City hereby accepts the attached proposal and bid documents of , the Contractor for the Project, and for the sums listed therein. 2. This Agreement consists of the following component parts which are incorporated herein by reference: a. Addenda Numbers ; b. "Standard Specifications for Highway and Bridge Construction," Series of 2009, Iowa Department of Transportation, as amended; C. Plans; d. Specifications and Supplementary Conditions; e. Notice to Bidders; f. Note to Bidders; g. Performance and Payment Bond; h. Restriction on Non - Resident Bidding on Non - Federal -Aid Projects; i. Contract Compliance Program (Anti- Discrimination Requirements); j. Proposal and Bid Documents; and k. This Instrument. The above components are deemed complementary and should be read together. In the event of a discrepancy or inconsistency, the more specific provision shall prevail. AG -1 3. The names of subcontractors approved by City, together with quantities, unit prices, and extended dollar amounts, are as follows (or shown on an attachment): 4. Payments are to be made to the Contractor in accordance with the Supplementary Conditions. DATED this day of City ATTEST: Mayor Contractor (Title) ATTEST: 20_ - City Clerk (Company Official) Approved By: City Attorney's Office U_LWA PERFORMANCE AND PAYMENT BOND (insert the name and address or legal title of the Contractor) Principal, hereinafter called the Contractor and as (insert the legal title of the Surety) , as Surety, hereinafter called the Surety, are held and firmly bound unto the City of Iowa City, Iowa, as obligee, hereinafter called the Owner, in the amount of Dollars for the payment for which Contractor and Surety hereby bind themselves, their heirs, executors, administrators, successors and assigns, jointly and severally. WHEREAS, Contractor has, as of entered into a , (date) " written Agreement with Owner for Project; and WHEREAS, the Agreement requires execution of this Performance and Payment Bond, to be completed by Contractor, in accordance with plans and specifications prepared by _, which Agreement is by reference made a part hereof, and the agreed -upon work is hereafter referred to as the Project. NOW, THEREFORE, THE CONDITIONS OF THIS OBLIGATION are such that, if Contractor shall promptly and faithfully perform said Agreement, then the obligation of this bond shall be null and void; otherwise it shall remain in full force and effect until satisfactory completion of the Project. A. The Surety hereby waives notice of any alteration or extension of time made by the Owner. B. Whenever Contractor shall be, and is declared by Owner to be, in default under the Agreement, the Owner having performed Owner's obligations thereunder, the Surety may promptly remedy the default, or shall promptly: 1. Complete the Project in accordance with the terms and conditions of the Agreement, or 2. Obtain a bid or bids for submission to Owner for completing the Project in accordance with the terms and conditions of the Agreement; and upon determina- tion by Owner and Surety of the lowest responsible bidder, arrange for a contract between such bidder and Owner, and make available, as work progresses (even though there may be a default or a succession of defaults under the Agreement or subsequent contracts of completion arranged under this paragraph), sufficient 1- '.7iffill funds to pay the cost of completion, less the balance of the Contract Price, but not exceeding the amount set forth in the first paragraph hereof. The term "balance of the Contract Price," as used in this paragraph, shall mean the total amount payable by Owner to Contractor under the Agreement, together with any addenda and /or amendments thereto, less the amount properly paid by Owner to Contractor. C. The Contractor and Contractor's Surety shall be obligated to keep the improvements covered by this bond in good repair for a period of () years from the date of formal acceptance of the improvements by the Owner. D. No right of action shall accrue to or for the use of any person, corporation or third party other than the Owner named herein or the heirs, executors, administrators or successors of Owner. IT IS A FURTHER CONDITION OF THIS OBLIGATION that the Principal and Surety, in accordance with provisions of Chapter 573, Code of Iowa, shall pay to all persons, firms or corporations having contracts directly with the Principal, including any of Principal's subcontrac- tors, all claims due them for labor performed or materials furnished in the performance of the Agreement for whose benefit this bond is given. The provisions of Chapter 573, Code of Iowa, are a part of this bond to the same extent as if it were expressly set out herein. 20 SIGNED AND SEALED THIS IN THE PRESENCE OF: Witness I: DAY OF (Principal) (Title) (Surety) (Title) (Street) (City, State, Zip) (Phone) CITY OF IOWA CITY SECTION I - GENERAL POLICY STATEMENT It is the policy of the City of Iowa City to require equal employment opportunity in all City contract work. This policy prohibits discrimination by the City's contractors, consultants and vendors and requires them to ensure that applicants seeking employment with them and their employees are treated equally without regard to race, color, creed, religion, national origin, sex, gender identity, sexual orientation, disability, marital status, and age. It is the City's intention to assist employers, who are City contractors, vendors or consultants, in designing and implementing equal employment opportunity so that all citizens will be afforded equal accessibility and opportunity to gain and maintain employment. PROVISIONS: 1. All contractors, vendors, and consultants requesting to do business with the City must submit an Equal Opportunity Policy Statement before the execution of the contract. 2. All City contractors, vendors, and consultants with contracts of $25,000 or more (or less if required by another governmental agency) must abide by the requirements of the City's Contract Compliance Program. Emergency contracts may be exempt from this provision at the discretion of the City. Regardless of the value of the contract, all contractors, vendors, and consultants are subject to the City's Human Rights Ordinance, which is codified at Article 2 of the City Code. 3. Contracting departments are responsible for assuring that City contractors, vendors, and consultants are made aware of the City's Contract Compliance Program reporting responsibilities and receive the appropriate reporting forms. A notification of requirements will be included in any request for proposal and notice of bids. 4. Prior to execution of the contract, the completed and signed Assurance of Compliance (located on pages CC -2 and CC -3) or other required material must be received and approved by the City. 5. Contracting departments are responsible for answering questions about contractor, consultant and vendor compliance during the course of the contract with the City. 6. All contractors, vendors, and consultants must refrain from the use of any signs or designations which are sexist in nature, such as those which state "Men Working" or "Flagman Ahead," and instead use gender neutral signs. All contractors, vendors, and consultants must assure that their subcontractors abide by the City's Human Rights Ordinance. The City's protected classes are listed at Iowa City City Code section 2 -3 -1. CC -1 SECTION II - ASSURANCE OF COMPLIANCE The following sets forth the minimum requirements of a satisfactory Equal Employment Opportunity Program which will be reviewed for acceptability. PLEASE RETURN PAGES CC2 AND CC3 OF THIS SECTION TO THE CONTRACTING DEPARTMENT PRIOR TO THE EXECUTION OF THE CONTRACT. With respect to the performance of this contract, the contractor, consultant or vendor agrees as follows: (For the purposes of these minimum requirements, "contractor" shall include consultants and vendors.) a. The contractor will not discriminate against any employee or applicant for employment and will take affirmative efforts to ensure applicants and employees are treated during employment without regard to their race, color, creed, religion, national origin, sex, sexual orientation, gender identity, disability, marital status, and age. Such efforts shall include, but not be limited to the following: employment, promotion, demotion, or transfer; recruitment or recruitment advertising; layoff or termination; rates of pay or other forms of compensation; and selection for training, including apprenticeship. b. The contractor will, in all solicitations or advertisements for employees placed;by or on behalf of the contractor, state that it is an equal opportunity employer. Note: Contracts that are federally funded are subject to Executive Order No. 11246, as, amended, and the regulations (see generally 29 U.S.C. § 1608 et sec.) and relevant orders of- the U.S.. Secretary of Labor. The Secretary of Labor, and not the City, enforces said regulations and orders. 3. Provide a copy of your written Equal Employment Opportunity policy statement. . Where is this statement posted? 4. What is the name, telephone number and address of your business' Equal Employment Opportunity Officer? (Please print) Phone number Address 5. The undersigned agrees to display, in conspicuous places at the work site, all posters required by federal and state law for the duration of the contract. NOTE: The City can provide assistance in obtaining the necessary posters. CC -2 6. How does your business currently inform applicants, employees, and recruitment sources (including unions) that you are an Equal Employment Opportunity employer? The above responses to questions 1 through 6, are true and correctly reflect our Equal Employment Opportunity policies. Business Name Signature Print Name Phone Number Title Date CC -3 SECTION III - SUGGESTED STEPS TO ASSURE EQUAL EMPLOYMENT OPPORTUNITIES COMPANY POLICY Determine your company's policy regarding equal employment opportunities. Document the policy and post it in a conspicuous place so that it is known to all your employees. Furthermore, disseminate the policy to all potential sources of employees and to your subcontractors asking their cooperation. The policy statement should recognize and accept your responsibility to provide equal employment opportunity in all your employment practices. In regard to dissemination of this policy, this can be done, for example, through the use of letters to all recruitment sources and subcontractors, personal contacts, employee meetings, web page postings, employee handbooks, and advertising. 2. EQUAL EMPLOYMENT OPPORTUNITY OFFICER Designate an equal employment opportunity officer or, at minimum, assign someone the responsibility of administering and promoting your company's Equal Employment Opportunity program. This person should have a position in your organization which emphasizes the importance of the program. 3. INSTRUCT STAFF Your staff should be aware of and be required to abide by your Equal Employment Opportunity program. All employees authorized to hire, supervise, promote, or discharge employees or are involved in such actions should be trained and required to comply with your policy and the current equal employment opportunity laws. 4. RECRUITMENT (a) Let potential employees know you are an equal opportunity employer. This can be done by identifying yourself on all recruitment advertising as "an equal opportunity employer ". (b) Use recruitment sources that are likely to yield diverse applicant pools. Word -of -mouth recruitment will only perpetuate the current composition of your workforce. Send recruitment sources a letter annually which reaffirms your commitment to equal employment opportunity and requests their assistance in helping you reach diverse applicant pools. (c) Analyze and review your company's recruitment procedures to identify and eliminate discriminatory barriers. (d) Select and train persons involved in the employment process to use objective standards and to support equal employment opportunity goals. (e) Review periodically job descriptions to make sure they accurately reflect major job functions. Review education and experience requirements to make sure they accurately reflect the requirements for successful job performance. (f) Review the job application to insure that only job related questions are asked. Ask yourself "Is this information necessary to judge an applicant's ability to perform the job applied for ?" Only use job - related tests which do not adversely affect any particular group of people. (g) Monitor interviews carefully. Prepare interview questions in advance to assure that they are only job related. Train your interviewers on discrimination laws. Biased and subjective judgments in personal interviews can be a major source of discrimination. (h) Improve hiring and selection procedures and use non - biased promotion, transfer and training policies to increase and /or improve the diversity of your workforce representation. Companies must make sure procedures for selecting candidates for promotion, transfer and training are based upon a fair assessment of an employee's ability and work record. Furthermore, all companies should post and otherwise publicize all job promotional opportunities and encourage all qualified employees to bid on them. CC -4 Attached for your information is a copy of Section 2 — 3 —1 of the Iowa City Code of Ordinances which prohibits certain discriminatory practices in employment. Please note that the protected characteristics include some not mandated for protection by Federal or State law. As a contractor, consultant or vendor doing business with the City of Iowa City you are required to abide by the provisions of the local ordinance in conjunction with your performance under a contract with the City. CC -5 i CC -5 2 -3.1 CHAPTER 3 DISCRIMINATORY PRACTICES SECTION: 2 -3 -1: Employment; Exceptions 2 -3 -2: Public Accommodation; Exceptions 2.3.3: Credit Transactions; Exceptions 2 -3 -4: Education 2 -3 -5: Aiding Or Abetting; Retaliation; Intimidation 2.3.1: EMPLOYMENT; EXCEPTIONS: A. It shall be unlawful for any employer to refuse to hire, accept, register, classify, upgrade or refer for employ- ment, or to otherwise discriminate in employment against any other person or to discharge any employee be- cause of age, color, creed, disability, gender identity, marital status, nation- al origin, race, religion, sex or sexual orientation. B. It shall be unlawful for any labor orga- nization to refuse to admit to member- ship, apprenticeship or training an applicant, to expel any member, or to otherwise discriminate against any applicant for membership, apprentice- ship or training or any member In the privileges, rights or benefits of such membership, apprenticeship or train- ing because of age, color, creed, disability, gender identity, marital status, national origin, race, religion, sex or sexual orientation of such ap- plicant or member. 2 -3.1 C. It shall be unlawful for any employer, employment agency, labor organiza- tion or the employees or members thereof, to directly or indirectly adver- tise or in any other manner Indicate or publicize that individuals are unwel- come, objectionable or not solicited for employment or membership be- cause of age, color, oreecl,,disabliity, gender identity, marital status, nation- al origin, race, religion,, sek or sexual orientation. (Ord. 95?95n7, 11 -7 -1995) D. Employment policies relating to preg- nancy and childbirth shall be, governed by the following: 1. A written or unwritten employment policy or practice which excludes from employment applicants or employees because of the employee's pregnancy Is a prima facie violation of this Title. 2. Disabilities caused or contributed to by the employee's pregnancy, miscar- riage, childbirth and recovery there- from are, for all job- related purposes, temporary disabilities and shall be treated as such under any health or temporary disability Insurance or sick leave plan available In connection with employment or any written or unwrit- ten employment policies and practices Involving terms and conditions of employment as applied to other tem- porary disabilities. E. It shall be unlawful for any person to solicit or require as a condition of employment of any employee or pro- 697 Iowa City CC -6 2 -3 -1 spective employee a test for the pres- ence of the antibody to the human immunodeficiency virus. An agree- ment between an employer, employ- ment agency, labor organization or their employees, agents or members and an employee or prospective em- ployee concerning employment, pay or benefits to an employee or pro- spective employee in return for taking a test for the presence of the antibody to the human immunodeficiency virus, Is prohibited. The prohibitions of this subsection do not apply if the State epidemiologist determines and the Director of Public Health declares through the utilization of guidelines established by the Center for Disease Control of the United States Depart- ment of Health and Human Services, that a person with a condition related to acquired Immune deficiency syn- drome poses a significant risk of transmission of the human immunode- ficlency virus to other persons In a specific occupation. F. The following are exempted from the provisions of this Section: 1. Any bona fide religious institution or its educational facility, association, corporation or society with respect to any qualifications for employment based on religion when such qualifica- tions are related to a bona fide reli- glous purpose. A religious qualifica- tion for Instructional personnel or an administrative officer, serving in a supervisory capacity of a bona fide religious educational facility or reli- gious institution shall be presumed to be a bona fide occupational qualifica- tion. (Ord, 94 -3647, 11 -8 -1994) CC -7 2 -3 -1 2. An employer or employment agency which chooses to offer employment or advertise for employment to only the disabled or elderly. Any such employ- ment or offer of employment shall not discriminate among the disabled or elderly on the basis of age, color, creed, disability, gender identity, mari- tal status, national origin, race, reli- gion, sex or sexual orientation. (Ord. 95- 3697,11 -7 -1995) 3. The employment of individuals for work within the home of the employer if the employer or members of the family reside therein during such em- ployment. 4. The employment of Individuals to render personal service to the person of the employer or members of the employer's family, 5. To employ on the basis of sex in those certain instances where sex is a bona fide occupational qualification reasonably necessary to the normal operation of a particular business or enterprise. The bona fide occupational qualification shall be interpreted nar- rowly. 6. A State or Federal program de- signed to benefit a specific age classi- fication which serves a bona fide pub- lic purpose. 7. To employ on the basis of disability In those certain Instances where pres- ence of disability is a bona fide occu- pational qualification reasonably nec- essary to the normal operation of a particular business or enterprise. The bona fide occupational qualification shall be interpreted narrowly. (Ord. 94 -3647, 11 -8 -1994) GENERAL CONDITIONS Division 11, General Requirements and Covenants of the Iowa Department of Transportation "Standard Specifications for Highway and Bridge Construction," Series of 2009, as amended, shall apply except as amended in the Supplementary Conditions. GC -1 SUPPLEMENTARY CONDITIONS ARTICLES WITHIN THIS SECTION S -1 Definitions S -2 Limitations of Operations S -3 Insurance S -4 Supervision and Superintendence S -5 Concerning Subcontractors, Suppliers and Others S -6 Compliance with OSHA Regulations S -7 Employment Practices S -8 Contract Compliance Program (Anti- Discrimination Requirements) S -9 Measurement and Payment S -10 Taxes S -11 Construction Stakes S -12 Restriction on Non - Resident Bidding on Non - Federal -Aid Projects Caption and Introductory Statements These Supplementary Conditions amend or supplement Division 11 of the Iowa Department of Transportation "Standard Specifications for Highway and Bridge Construction," Series of 2009, as amended and other provisions of the Contract Documents. All provisions which are not so amended or supplemented remain in full force and effect. S -1 DEFINITIONS. ADD to or CHANGE the following definitions within 1101.03 of the IDOT STANDARD SPECIFICATIONS. "ENGINEER" shall mean the Director of Public Works for the City of Iowa City, Iowa or his authorized representative. "OWNER" and "CITY" shall mean the City of Iowa City, Iowa acting through the City Council and duly authorized agents. "CONTRACTING AUTHORITY," "DEPARTMENT OF TRANSPORTATION," or "COUNTY" shall mean the CITY. "IDOT STANDARD SPECIFICATIONS" shall "Standard Specifications for Highway and amended. SC -1 mean the Iowa Department of Transportation Bridge Construction," Series of 2009, as S -2 LIMITATIONS OF OPERATIONS. Add the following paragraph to 1108.03 of the ]DOT STANDARD SPECIFICATIONS: Except for such work as may be required to properly maintain lights and barricades, no work will be permitted on Sundays or legal holidays without specific permission of the ENGINEER. S -3 INSURANCE. A. CERTIFICATE OF INSURANCE; CANCELLATION OR MODIFICATION 1. Before commencing work, the Contractor shall submit to the City for approval a Certificate of Insurance, meeting the requirements specified herein, to be in effect for the full contract period. The name, address and phone number of the insurance company and agent must accompany the certificate. The liability limits required hereunder must apply to this Project only. 2. The Contractor shall notify the City in writing at least thirty (30) calendar days prior to any change or cancellation of said policy or policies. 3. Cancellation or modification of said policy or policies shall be considered just cause for the City of Iowa City to immediately cancel the contract and /or to halt work on the contract, and to withhold payment for any work performed on the contract. B. MINIMUM COVERAGE Any policy or policies of insurance purchased by the Contractor to satisfy his /her responsibilities under this contract shall include contractual liability coverage, and shall be in the following type and minimum amounts: Type of Coverage Comprehensive General Liability Bodily Injury & Property Damage* Automobile Liability Bodily Injury & Property Damage Each Occurrence Aggregate $1,000,000 $2,000,000 Combined Single Limit $1,000,000 Excess Liability $1,000,000 $1,000,000 Worker's Compensation Insurance as required by Chapter 85, Code of Iowa. *Property Damage liability insurance must provide explosion, collapse and underground coverage when determined by City to be applicable. The City requires that the Contractor's Insurance carrier be A rated or better by A.M. Best. SC -2 In addition, the Contractor shall be required to comply with the following provisions with respect to insurance coverage: The entire amount of Contractor's liability insurance policy coverage limits, identified in the policy and on the Certificate of Insurance, must, under the policy, be available to pay damages for which the insured Contractor becomes liable, or for which the insured assumes liability under the indemnity agreement herein contained, and such coverage amount shall not be subject to reduction by virtue of investigation or defense costs incurred by Contractor's insurer. 2. The entire amount of the Contractor's liability insurance policy coverage limits shall be payable by the Contractor's insurer, with no deductible to be paid by, or self- insured retention to be attributed to, the Contractor unless this requirement is waived by the City. Contractor's Certificate of Insurance must set forth the nature and amount of any such deductible or self- insured retention. 3. If Contractor's liability insurance coverage is subject to any special exclusions or limitations not common to the type of coverage being provided, such ex�J�sions or limitations shall be noted on the Certificate of Insurance. 4. The City prefers that Contractor provide it with "occurrence form" liability' ihsurancb coverage. If Contractor can only provide "claims- made" insurance coverage, then the Contractor must comply with the following requirements: a. If the Contractor changes insurance carriers, or if Contractor's insurance coverage is canceled, during the contract period or within two years after City's acceptance of the work, Contractor agrees to immediately notify the City of such event. b. If Contractor's insurance is canceled or is allowed to lapse during said period, Contractor shall be required to obtain replacement insurance coverage to fulfill its obligation hereunder. C. If, during said period, Contractor voluntarily changes insurance carriers or is required to obtain replacement coverage from another carrier, Contractor shall either (1) purchase "tail" coverage from its first carrier effective for a minimum of two years after City Council acceptance of the work, or (2) purchase "prior acts" insurance coverage from its new carrier, covering prior acts during the period of this Contract from and after its inception. d. "Tail" or "prior acts" coverage so provided shall have the same coverage, with the same limits, as the insurance specified in this Contract, and shall not be subject to any further limitations or exclusions, or have a higher deductible or self- insured retention than the insurance which it replaces. 5. The City reserves the right to waive any of the insurance requirements herein provided. The City also reserves the right to reject Contractor's insurance if not in compliance with the requirements herein provided, and on that basis to either award the contract to the next low bidder, or declare a default and pursue any and all remedies available to the City. SC -3 6. In the event that any of the policies of insurance or insurance coverage identified on Contractor's Certificate of Insurance are canceled or modified, or in the event that Contractor incurs liability losses, either due to activities under this Contract, or due to other activities not under this Contract but covered by the same insurance, and such losses reduce the aggregate limits of Contractor's liability insurance below the limits required hereunder, then in that event the City may in its discretion either suspend Contractor's operations or activities under this Contract, or terminate this Contract, and withhold payment for work performed on the Contract. In the event that any of the policies or insurance coverage identified on Contractor's Certificate of Insurance are canceled or modified, the City may in its discretion either suspend Contractor's operations or activities under this Contract, or terminate this Contract, and withhold payment for work performed on the Contract. C. HOLD HARMLESS The Contractor shall indemnify, defend and hold harmless the City of Iowa City and its officers, employees, and agents from any and all liability, loss, cost, damage, and expense (including reasonable attorney's fees and court costs) resulting from, arising out of, or incurred by reason of any claims, actions, or suits based upon or alleging bodily injury, including death, or property damage rising out of or resulting from the Contractor's operations under this Contract, whether such operations be by himself or herself or by any Subcontractor or by anyone directly or indirectly employed by either of them. 2. Contractor is not, and shall not be deemed to be, an agent or employee of the City of Iowa City, Iowa. S -4 SUPERVISION AND SUPERINTENDENCE. Add the following paragraph to 1105.05 of the IDOT STANDARD SPECIFICATIONS: CONTRACTOR shall maintain a qualified and responsible person available 24 hours per day, seven days per week to respond to emergencies which may occur after hours. CONTRACTOR shall provide to ENGINEER the phone number and /or paging service of this individual. S -5 CONCERNING SUBCONTRACTORS, SUPPLIERS AND OTHERS. Add the following paragraph to 1108.01 of the ]DOT STANDARD SPECIFICATIONS: Bidders shall list those persons, firms, companies or other parties to whom it proposes /intends to enter into a subcontract regarding this project as required for approval by the City and as noted on the Form of Proposal and the Agreement. If no minori(y, business enterprises (MBE) are utilized, the CONTRACTOR shall furnish documentation, of all efforts to recruit MBE's. SC -4 S -6 COMPLIANCE WITH OSHA REGULATIONS. Add the following paragraphs to 1107.01 of the [DOT STANDARD SPECIFICATIONS: The Contractor and all subcontractors shall comply with the requirements of 29 CFR 191C (General Industry Standard) and 29 CFR 1926 (Construction Industry Standard). The Contractor and all subcontractors are solely responsible for compliance with said regulations. The Contractor will provide Material Safety Data Sheets (MSDS) for all hazardous chemicals or materials that will be at the job site. The Material Safety Data Sheets will be submitted to the Project Engineering prior to the start of construction and supplemented as necessary throughout the project. This data is being provided for informational purposes only and does not relieve the contractor of any obligations for compliance with applicable OSHA and State laws regarding hazardous chemicals and right -to -know. S -7 EMPLOYMENT PRACTICES. h] Neither the Contractor nor his /her subcontractors, shall employ any person .whose physical or mental condition is such that his /her employment will endanger the health arfd safety of them- selves or others employed on the project. Contractor shall not commit any of the following employment practices and agrees to include- the following clauses in any subcontracts: To discriminate against any individual in terms, conditions, or privileges of employment because of sex, race, color, religion, national origin, sexual orientation, gender identity, marital status, age or disability unless such disability is related to job performance of such person or employee. To discharge from employment or refuse to hire any individual because of sex, race, color, religion, national origin, sexual orientation, gender identity, marital status, age, or disability unless such disability is related to job performance of such person or employee. S -8 CONTRACT COMPLIANCE PROGRAM (ANTI- DISCRIMINATION REQUIREMENTS). For all contracts of $25,000 or more, the Contractor shall abide by the requirements of the City's Contract Compliance Program, which is included with these Specifications beginning on page CC -1. S -9 MEASUREMENT AND PAYMENT. Section 01025, Measurement and Payment, contained in Division 1 of these specifications defines all pay items and methods of measurement. The provisions of this section will supersede applicable sections in the IDOT STANDARD SPECIFICATIONS. S -10 TAXES. Contractors and approved subcontractors will be provided a Sales Tax Exemption Certificate to purchase building materials, supplies, or equipment in the performance of the contract. The Contractor shall submit the information necessary for the certificates to be issued. S -11 CONSTRUCTION STAKES. Replace the last paragraph of 1105.06 of the IDOT Standard Specifications with the following: The Contractor shall be responsible for the preservation of stakes and marks. Any necessary re- staking will be at the Contractor's expense and will be charged at a rate SC -5 of $75 per hour. S -12 RESTRICTION ON NON - RESIDENT BIDDING ON NON - FEDERAL -AID PROJECTS. The Contractor awarded the project together with all Subcontractors shall be required to complete the form included with these specifications (and entitled the same as this section) and submit it to the Engineer before work can begin on the project. Note that these requirements involve only highway projects not funded with Federal monies. SC -6 RESTRICTION ON NON - RESIDENT BIDDING ON NON - FEDERAL -AID PROJECTS PROJECT NAME: S. Dubuque Street Storm Sewer and Water Main Improvements Project TYPE OF WORK: DATE OF LETTING: July 26, 2012 A resident bidder shall be allowed a preference as against a non - resident bidder from a state or foreign country which gives or requires a preference to bidders from that state or foreign country. That preference is equal to the preference given or required by the state or foreign'country in which the non - resident bidder is a resident. 'Resident bidder" is defined as a person authorized to transact business in this state and having a place of business within the state, "and'ha,s condueteid business for at least six months prior to the first advertisement for the public improvement. In the case of a corporation, the above requirements apply as well as the requirement that the corporation have at least fifty percent of its common stock owned by residents of this state. This qualification as resident bidder shall be maintained by the bidder and his /her contractors and subcontractors at the work site until the project is completed. I hereby certify that the undersigned is a resident bidder as defined above and will remain such from the start of the project until its completion. COMPANY NAME: CORPORATE OFFICER: TITLE: DATE: 6/12 data on cilynVEng ]MaslerSpecsttronlend.doc ME SECTION 01010 SUMMARY OF THE WORK PART 1- GENERAL General description, not all inclusive. A. Base Bid Work: I. Remove Portland Cement Concrete and Asphalt Cement Concrete paveme4nt. r, 2. Remove debris and miscellaneous items. , 3. Mill and overlay Hot Mix Asphalt. 4. Construct 4" and 6" thick PCC sidewalk. 5. Construct 7" thick Portland Cement Concrete parking pavement. 6. Constrict 7 -inch thick Portland Cement Concrete base pavement. 7. Construct 7 -inch pervious Portland Cement Concrete pavement. 8. Remove existing storm sewer intakes and pipe. 9. Install new storm sewer intakes and pipe. 10. Abandon existing water main. 11. Directonal bore new water main and connect services, 12. Stabilize slopes via grading and placement of rip rap and revetment stone. 13. Provide traffic control during all phases of project. 14. Final grading, sod, and restoration of site, 15. Other work associated with reconstruction. 01010 -1 SECTION 01025 MEASUREMENT AND PAYMENT PART1- GENERAL 1.01 SUMMARY.• A. Procedures and submittal requirements for schedule of values, applications for payment, and unit prices. 1.02 STANDARD OFMEASUREMENTS., A. Work completed under the contract shall be measured by the Engineer. Payment will be based on the actual quantity of work performed according to the various classes of work specified unless noted in Part 3 of this Section. The Contractor will be given an opportunity to be present during measurement. 1.03 SCOPEOFPAYMENT: A. The Contractor shall accept the compensation as herein provided as full payment for furnishing materials, labor, tools and equipment and for performing work under the contract; also, for costs arising from the action of the elements, or from any unforeseen difficulties which may be encountered during the execution of the work and up to the time of acceptance. B. Construction items may be bid as a lump sum or as itemized work, which will be paid on a unit cost basis. In either case, some work may be required for which a separate pay item is not provided. Completion of this work is required. If a separate pay item is not provided for this work, it is to be considered incidental to the project and no separate payment will be made. PART 2 - PRODUCTS 2.01 NONE PART 3 - EXECUTION 3.01 PROCEDURE: A. Payment under this contract shall occur no more than once per month for work completed by the Contractor. Payment is based on an estimate of the total amount and value of work completed minus 5% retainage. It is not the City's policy to pay for materials and equipment stored or furnishings fabricated off site. The 5% retainage will be released 31 days after the project is accepted by the City Council, provided no claims against the project have been filed within 30 days of project acceptance. Chapter 573 of the Code of Iowa will govern the release of retainage and resolution of claims. 01025 -1 3.02 BID ITEMS. A. GENERAL The following subsections describe the measurement of and payment for the work to be done under the items listed in the FORM OF PROPOSAL. Each unit or lump sum price stated shall constitute full payment as herein specified for each item of work completed in accordance with the drawings and specifications, including clean up. It is the Contractors responsibility to identify the locations of public and private utilities. No additional compensation will be made for any interference or delay caused by the placement and /or relocation of said utilities. No additional compensation will be made for repair costs to fix damage caused by the Contractor or his /her Subcontractors. Work associated with existing items on private and /or public property that are to be protected, removed, relocated, replaced, reinstalled or modified is considered incidental unless it is listed as an item in the FORM OF PROPOSAL. Existing items damaged or unsuitable for relocation or reinstallation will be replaced with like item and painted, if necessary, at the Contractor's expense. All trees and shrubs shall remain and be protected from damage unless specifically noted as "REMOVE" or "CLEAR AND GRUB" on the project plans and as otherwise directed by the Engineer. The prices for those items which may have any impact on existing trees and shrubs shall include compensation for special precautionary measures required to prevent injury or damage to said tree, shrub or root system. The prices for those items which involve grading or excavation shall include compensation for top soil removal and replacement (unless it is listed as an item in the FORM OF PROPOSAL), disposal of surplus excavated material, handling water, installation of all necessary sheeting, bracing and temporary fencing around all open excavations and supply, placement and compaction of specified backfill. The Prices for those items which involve surface removal adjacent to buildings or vaults shall include compensation to protect exposed surfaces from water which may leak or seep into vaults and /or basements. All labor, materials and equipment required to bring surfaces to the proper elevation and density including loading, hauling, and disposal of unsuitable material, below grade excavation, borrow and hauling, placing, forming, drying, watering and compaction of fill material, and all such work as may be required to make the grading work complete with a uniform surface free of rock, broken concrete, tree roots, limbs and other debris is incidental to this project unless it is listed as an item in the FORM OF PROPOSAL. The Contractor must pay for all parking permit fees, meter hoods, lot and ramp fees, and parking tickets. The Contractor must figure these costs into their bid prices. The City will not waive parking fees or fines. Permits paid for by the Contractor will be issued only for construction vehicles, not personal vehicles. The Contractor shall be responsible for continuous cleaning of mud and debris off adjacent driveways, streets, sidewalks and private property, when mud and debris is deposited there as a result of any construction activity. The cost of clean up shall be incidental. 01025 -2 B. BID ITEM DESCRIPTIONS Removal of Pavement The unit prices for this item will be paid based on the number of square yards of pavement removed. Removal quantities shall include Portland Cement Concrete, fiill depth Asphalt Cement Concrete, and/or brick roadways, driveways, parking lots, curbs and gutters, sidewalks, compacted granular and chip seal surfaces, and asphalt patches. Saw cuts and hauling and disposal of waste materials shall be incidental. All proposed saw cuts must be approved by the Engineer. Removal operations shall conform to the construction phasing noted on the plans or as otherwise approved or directed by the Engineer. Additional effort required for this purpose is considered incidental. This bid item also includes the removal of existing concrete parking,bumpe s. Such, bumpers shall be salvaged and delivered to the City of Iowa City Transit facility • located at 1200 S. Riverside Drive. 2. Removal of Debris The unit prices for this item will be paid based on the number of cubic yards of debris removed. The lump sum price for this item includes excavation, removal, hauling, and disposal of materials removed. Debris included to be removed with this item include but are not limited to chain link fence, trees, vegetation, trash, rock, any other items noted on the plans north of the railroad and found along the chain link fence. The lump sum price for this item includes all work required to cut, remove and dispose of trees, stumps, roots, logs, down timber, hedges, brush, shrubs, corn, crops, vegetation, rubbish and chain link fence within the limits of construction as shown on the plans and directed by the Engineer. 3 -4. Parking Meters The unit prices for these items will be paid based on the number of parking meter posts and footings removed and installed. The City of Iowa City Parking Division will 5. IIMA Pavement Milling The unit prices for this item will be paid based on the number of square yards of asphalt milled. Millings are to be delivered to the Iowa City Landfill. 6. Asphalt Removal, Driveway and Alley The unit prices for this item will be paid based on the number of square yards of asphalt driveway and alley approach to be removed in order to properly overlay and blend in street to driveways and alleys. Clean & Preparation of Base The unit prices for this item be paid based on the number of miles of road surface to be properly cleaned and prepared for 11MA overlay. 01025 -3 8 -9. Hot Mix Asphalt The unit prices for these items will be paid based on the number of tons of Asphalt Cement Concrete pavements, driveways, bases and overlays constructed at the specified widths, thicknesses and mix designs. Included with these items is subgrade compaction and preparation, subgrade treatments, supply, placement and compaction of aggregate base, supply, placement and compaction of asphalt, and backfilling at curb lines. 10. PCC Base Repair The unit price for this item will be paid based on the number of square yards of Portland Cement Concrete pavement constructed at the specified widths, thicknesses and mix designs. Also included with these items is excavation to place forms and pavement at required elevations, supply, placement and compaction of subgrade material under driveways and parking lots, forming, supply, placement and finishing of concrete, special concrete mixes, reinforcement, Portland Cement Concrete curb and curb drop installation, curing, jointing and joint sealing, grading to establish a uniform grade between the sidewalk and top of curb, and backfilling at curb lines, driveway edges and parking lot edges. Aggregate durability class for all P.C. Concrete paving shall be Class 3. 11 -13. Portland Cement Concrete Sidewalk and Curb Ramps. The unit price for these items will be paid based on the number of square feet of Portland Cement Concrete sidewalk constructed at the specified widths, thicknesses and mix designs. Included with these items is subgrade preparation and compaction, subgrade treatments, forming, concrete placement and finishing, curb ramps, curb ramp coloring per Section 03350, curing, jointing and joint sealing, and backfilling at form lines. Truncated dome panels shall be cast iron material. I4. PCC Pavement, 7" Parking The unit price for this item will be paid based on the number of square yards of Portland Cement Concrete pavement constructed at the specified widths, thicknesses and mix designs. Also included with these items is excavation to place forms and pavement at required elevations, supply, placement and compaction of subgrade material under driveways and parking lots, forming, supply, placement and finishing of concrete, special concrete mixes, reinforcement, Portland Cement Concrete curb and curb drop installation, curing, jointing and joint sealing, grading to establish a uniform grade between the sidewalk and top of curb, and backfilling at curb lines, driveway edges and parking lot edges. Aggregate durability class for all P.C. Concrete paving shall be Class 3. 15. Pervious PCC Pavement, 7" The unit price for this item will be paid based on the number of square yards of Portland Cement Concrete pavement constructed at the specified widths, thicknesses and mix designs. Included with this item is a 12" porous filter aggregate and 8" subdrain as shown in the plans. Included with these items is trenching, disposal of 01025 -4 excess excavated material, frrcnishing and placing blind ends, elbows, tees, and special connections, drilling or forming into drainage facilities, furnishing and placing porous backfill, and finishing the surface as directed by the Engineer and described in the specifications. 16. Remove & Replace Curb and Gutter, PCC, 2' The unit price for this item will be paid based on the number of linear feet of Portland Cement Concrete curb and gutter removed and constructed at the specified widths and thicknesses and includes excavation required to place forms and curb and gutter at required elevations, forming, supply, placement and finishing of concrete, cuing, jointing and joint sealing, grading to establish a uniform grade between the sidewalk and top of curb, and backfilling at curb lines. This item includes all curb and gutter to be removed and replaced as shown on the plans. 17. Removal of Intakes The unit price for this item will be paid based on the number of each type of designated structure which is removed and includes excavation, demolition; removal, disposal of debris and supply, placement and compaction of specified backfill. 18. Removal of Storm Sewer The unit price for this item will be paid based on the number of linear feet of designated pipe which is removed as measured along the pipe centerline and includes excavation, saw cut of structures, demolition, removal, including flared -end sections, disposal of debris, and supply, placement and compaction of specified backfill. 19. Storm Sewer Connection The unit price for this item will be paid based on the number of connections made to an existing storm sewer, storm sewer intake, or storm sewer manhole. This item includes all excavations and proper materials needed to make proper and structurally sound connection. 20 -23. Construction of Storm Intakes. The unit prices for these items will be paid based on the number of each type of intake constricted and includes excavation, forming, reinforcing steel, dowels, supply, placement, compaction and finishing of concrete, supply, placement and compaction of specified backfill, providing stubs for drainage tiles and the frame and casting. Construction of larger than standard intakes to fit over large storm sewers and intake throats shall be considered incidental. Stoppers for stub connections are incidental. 24 -26. Construction of Storm Sewers The unit prices for these items will be paid based on the number of linear feet installed. Length will be measured for each size and type of pipe along the pipe center line with no deductions for prefabricated beads or flared end sections. Measurement shall exclude the space across manholes and intakes. The following items shall be considered incidental unless they are included with other items listed in the FORM OF PROPOSAL: 01025 -5 a. Adapters, collars and tapping required for connections to dissimilar pipes, 27, Abandon Water Main The unit price for this item will be paid based on the abandonment of the existing 6" water main under S. Dubuque Street. Included in this item is the capping/plugging of the existing water main at each connection of the new water main, removal of existing fire hydrant and any valves as necessary, and all materials associated with the old water service lines no longer to be used. 28 -29. Construction of Water Mains and Water Services. The unit prices for construction of water mains will be paid based on the number of linear feet installed. Length will be measured for each size and type along the pipe centerline with no deductions for fittings. The unit prices for construction of water services will be paid based on the number of 01025 -6 manholes, or other appurtenances, b. Trench excavation including furnishing necessary equipment. C. Trench boxes required for safety and to minimize disturbance to features to be saved. d. Exploratory digging required to determine location of existing structures or potential conflicts. C. Furnishing pipe, wyes, tees, fittings, joint materials, and appurtenances. f. Supply, placement and compaction of specified pipe bedding material and standard or select material within the pipe envelope including concrete encasements. g. Supply, placement and compaction of standard backfill and granular backfill material. Granular backfill material shall be used in trenches under or within 5 feet of pavement or as otherwise indicated or specified on the plans and by the Engineer. h. Dewatering trenches and excavations for pipe, intakes, manholes and associated structures including furnishing pumps, piping, well points, etc., as required. L Temporary connections, piping, and pumping for bypassing sewage flows as required to construct pipe, intakes, manholes and associated structures. j. Frost excavation, frost ripping, frost blankets, or other activities associated with cold weather. k. Testing of sewers as required. 1. Temporary support of existing utility mains and service lines. M. Temporary fencing required to contain livestock. n. Repair or replacement of utility services damaged by the Contractor. o. Permanent connections and stubs with caps for sump pump, drainage, and field tiles of various sizes, including backfill as specified by the Engineer. 27, Abandon Water Main The unit price for this item will be paid based on the abandonment of the existing 6" water main under S. Dubuque Street. Included in this item is the capping/plugging of the existing water main at each connection of the new water main, removal of existing fire hydrant and any valves as necessary, and all materials associated with the old water service lines no longer to be used. 28 -29. Construction of Water Mains and Water Services. The unit prices for construction of water mains will be paid based on the number of linear feet installed. Length will be measured for each size and type along the pipe centerline with no deductions for fittings. The unit prices for construction of water services will be paid based on the number of 01025 -6 each size and type installed. Water main shall be 6" PVC and installed by way of direction boring. All materials, means, and methods for boring are to be included in this item. The following items sliall be considered incidental unless they are included with other items listed in the FORM OF PROPOSAL. Reference Section 02665, Part 2.01 and Part 3.03 for City provided parts and services. a. Furnishing and installing pipe, joint materials and fittings. b. All water main adapters and sleeves required for installation and connections to existing water mains. C. Furnishing and installing tapping sleeves, corporation cocks, tapping services, curb shut -off valves and boxes, couplings for connections to existing water services, and removal of abandoned service valve boxes. d. All trench, mole, exploratory, and hand excavation. e. Supply, placement and compaction of specified pipe bedding material and standard or select material within the pipe envelope. f Supply, placement and compaction of standard backfill and granular backfill material. g. Dewatering trenches including furnishing pumps, piping, well points, etc., as required. h. Temporary plugs or connections, to provide fill pressure water service as necessary. i. Frost excavation, frost ripping, frost blankets, or other activities associated with cold weather. j. Testing and disinfection of water mains and water services as required. k. Dechlorination of flushed water entering storm sewer system. 1. Temporary support of existing utility mains and service lines. m. Repair or replacement of utility services damaged by Contractor. n. Protection of existing valves so they are £idly operational and accessible during construction. o. Connections and /or taps for water mains and water services 4 inches in diameter and larger to existing water mains and water services. The unit price for this item will be paid based on the number of linear feet bored and jacked as measured end to end of assembled pipe within casing. Included with this item is excavation, jacking pit, receiving pit, boring and jacking, currier pipe, casing pipe, disposal of excavation and spoil material, casing chokes and field lock gaskets, supply, placement and compaction of specified backfill and connections to existing sewers and /or water mains. 01025 -7 30 -31. Fire Hydrant Assembly The unit prices for these items will be paid based on the number of each size and type installed and includes excavation, furnishing and installing specified valves, hydrants, fittings, swivel adaptors, rock drains, thrust blocks, valve box and lid and backfill. Separate prices are used for hydrants with or without auxiliary valve. The cost for auxiliary valve shall be included in the price for the hydrant. 32. Stabilize Slope, Rip Rap The unit price for this item will be paid based on the number of tons of specified stone placed as shown on the plans and directed by the Engineer. This item includes the necessary grading to re- establish and stabilize the slope along the north side of the railroad, supply and placement of rip rap, and supply and placement of Class E revetment stone as shown on the plans. Also included is subgrade preparation and shaping, supply and placement of engineering fabric and rock, and provisions to keep rock from being contaminated with soil during subsequent construction activities. 33. Final Grading and Restoration The lump sum price for this item will be paid based on the preparation of vegetation, and hauling, depositing, and spreading the topsoil on areas to receive sod. Also included is mowing, plowing, blading, disking, and stockpiling. Topsoil shall be removed or provided to a uniform 6 -inch depth. Also included is cutting, loading, hauling and disposal of unsuitable material, including chip seal, below grade excavation, borrow and hauling, placing, forming, drying, watering and compaction of fill material. This item includes all sod placed and includes preparation of sod bed, fertilizing materials, installation of sod, watering and all upkeep as specified, including a one- year guarantee. All disturbed areas not replaced with pavement shall receive sod unless noted on the plans or directed by the Engineer. 34t' Traffic Control The lump sum price for this item will be paid based on percent complete for furnishing, installing, maintaining, moving, relocating, and removing all traffic control devices including barricades, safety fencing, drums, lights, standard signs, temporary barrier rails, sequential flashing arrows, uniformed officers, temporary pavement markings and orange safety fence at road closures. This item includes traffic control as shown on the plans as well as any additional traffic control created by the contractor's phasing. All safety fence shall be considered incidental to this bid item. 35. Flaggers The unit price for this item will be paid based on the number of flagger days. This item is anticipated to be used during the HMA milling and overlay process. The Contractor shall notify the City prior to the use of flaggers. 36. Erosion Control 01025 -8 The lump sum price for this item will be paid based on erosion control practices to be installed and maintained in order to reduce and eliminate sediment from leaving the project area and entering the City's storm sewer system or waterways. This item includes but is not limited to silt fence, filter sock, intake protection, and erosion control mat. All practices installed shall be properly installed, monitored and maintained as needed. Erosion control for areas disturbed by careless actions of the Contractor shall be at the Contractor's expense. 37. Mobilization The lump sum price for this item includes the cost of transportation to and from the project for any associated equipment of the completion of the project from the start date to the date the City accepts the project as complete. 01025 -9 SECTION 01310 PROGRESS AND SCHEDULES PART1- GENERAL 1.01 SUMMARY.• A. Prepare, submit and update as necessary a schedule of the work. B. Time is of the essence. Minimizing inconvenience, disruption and duration disruption to residences and businesses is a high priority. Scheduling of work sball be planned with this in mind. 1.02 SUBMITTALS. A. The Contractor shall submit prior to the Pre-Construction meeting a detailed schedule of the proposed work with the controlling operation identified. The schedule shall include proposed dates and durations of street closings. Work may not begin until the schedule is approved by the Engineer. B. The Contractor shall submit updated construction schedules at two week intervals throughout the project. PART2- PRODUCTS None. PART 3 - EXECUTION 3.01 MEETINGS PRIOR TO CONSTRUCTION. A. A Pre - Construction meeting will be held prior to beginning work. 3.02 PROGRESS OF WORK.• A. The early start date is August 13, 2012. Completion date is November 2, 2012. Liquidated damages of $750.00 per day will be charged on work beyond November 2, 2012. B. No work shall be done between the hours of 10:00 p.m. and 7:00 a.m. without the approval of the Engineer, with the exception of saw cutting freshly poured concrete. C. Work will proceed in a well organized and continuous manner to minimize the disruption to the general public (both pedestrian and vehicular) and the local businesses and residents. Access to businesses and residences shall be maintained at all times. D. Construction will proceed in phases. The particular phasing sequence is outlined in the project plans. Prior to advancing to the next phase or sub - phase, the existing phase or sub- 01310 -1 phase shall be sufficiently complete to allow reopening to the public, as determined by the Engineer. E. Restoration activities such as pavement replacement will follow closely behind the work even if multiple mobilizations are necessary. F. The Contractor will become an active partner with the City in communicating with and providing information to concerned residents and businesses. G. Work will be staged to minimize the length of time parking spaces and parking revenue are lost. 3.03 COORDINATION WITH UTILITIES AND RAILROADS: A. It is anticipated that many utility conflicts will occur which cannot be taken care of ahead of time. The Contractor shall work closely with the utility companies to aid in these relocations to keep the project on schedule. B. The Railroads will provide all labor, materials and equipment for railroad facility removal, excavation, disposal, sub - drainage, ballast, sub - ballast and trackage renewal. C. The Railroads have certain time limitations on when the above mentioned work must take place. It shall be the Contractor's responsibility to coordinate and be available to meet the Railroads' schedule. Any costs associated with train rerouting due to circumstances caused by the Contractor shall beat the expense of the Contractor. 3.04 STREET CLOSINGS: A. Notify the Engineer four days in advance of street closings so that a press release can be issued. No street may be closed without the Engineer's approval and said notification. B. Thejob site shall be full secured prior to University of Iowa home football game weekends. 01310 -2 SECTION 01570 TRAFFIC CONTROL AND CONSTRUCTION FACILITIES PART1- GENERAL 1.01 SUMMARY.: A. Furnish, install and maintain traffic control and construction facilities required for the work. Remove when work is completed. 1.02 REFERENCES: A. IDOT Standard Specifications. r� B. U.S. Department of Transportation Federal Highway Administration "Manual on Uniform Traffic Control Devices for Streets and Highways," 1988 Edition, as revised. C. Traffic Control Notes on project plans. 1.03 SUBMITTALS: A. Submit a traffic control plan for all activities requiring traffic control not specifically addressed by the project plans. PART2- PRODUCTS 2.01 MATERIALS: A. Traffic control devices may be new or used, but must meet the requirements of the IDOT Standard Specifications. B. All construction fence shall be new and securely fastened to approved posts and installed as directed by the Engineer. 2.02 EQUIPMENT: A. Portable generators may not be used to power traffic control devices within 300 feet of residential dwellings, including apartments, between the hours of 10:00 p.m. and 7:00 a.m. PART 3 - EXECUTION 3.01 TECHNIQUES. A. Except as amended in this document, the work in this section will conform with the following divisions and sections of the IDOT Standard Specifications: Division 11. General Requirements and Covenants. Section 1107.09. Barricades and Warning Signs. 01570 -1 Division 25. Miscellaneous Construction. Section 2528. Traffic Control. 3.02 NO PARKING SIGNS: A. The City will famish "NO PARKING" signs to facilitate removal of parked vehicles ahead of scheduled work. The Contractor is responsible for installation and maintenance of the signs 48 hours in advance of when the vehicles must be removed. 3.03 MAINTENANCE OF FACILITIES. A. The Contractor shall monitor the condition of traffic control and construction facilities at all times, including non -work hours. Repair, replace and maintain as necessary. B. Pedestrian access to homes and businesses shall be maintained at all times. Temporary gravel surfaces shall be provided as directed by the Engineer. 3.04 EXCAVATIONS. A. All excavations shall be fenced and considered incidental to traffic control bid item. 3.05 ADDITIONAL FACILITIES. A. All signs, barricades and fences within and beyond the project area deemed appropriate by the Engineer shall be the responsibility of the Contractor. 11100 A area &cnginccOspecs- ii101570.da 01570-2 SECTION 02050 DEMOLITIONS, REMOVALS AND ABANDONMENTS PART1- GENERAL 1.01 SUMMARY: A. Furnish labor, materials, tools and equipment to remove existing paved surfaces as indicated and specified. B. Furnish labor, materials, tools and equipment to remove existing storm sewer pipes, sanitary sewer pipes, intakes, and drainage structures as indicated and specified._ , 1.02 REFERENCES: A. IDOT Standard Specifications. 1.03 QUALITYASSURANCE: A. Disposal sites shall comply with all applicable Iowa Department of Natural Resqurces and United States Environmental Protection Agency regulations. B. Comply with all state and local ordinances pertaining to hauling and disposal of rubbish, broken concrete, asphalt, stone, bricks, castings, and other waste or debris resulting from work on the project. 1.04 SUBMITTALS: A. Locations of disposal sites. PART 2- PRODUCTS 2.01 MATERIALS: A. Granular backfill material shall consist of Class A Crushed Stone, IDOT Standard Specification Section 4120.04 and Section 4109, Gradation No. 11. B. Explosives shall not be used for demolition. PART 3 - EXECUTION 3.01 TECHNIQUES: A. Except as amended in this document, the work in this section will conform with the following divisions and sections of the IDOT Standard Specifications: Division 24. Structures. Section 2401. Removal of Existing Structures. 02050 -1 Division 25. Miscellaneous Construction. Section 2510. Removal of Old Pavement. Section 2511. Removal and Construction of Portland Cement Concrete Side- walks. Section 2515. Removal and Construction of Paved Driveways. Section 2516. Removal and Construction of Retaining Walls and Steps. 3.02 INSPECTION,• A. Limits of demolition shall be per 3.04 of this section. The Engineer reserves the right to revise demolition limits if required by the nature of construction. 3.03 PROCEDURES: A. Utilities Notify all corporations, companies, individuals and state or local authorities owning pipelines, water lines, gas mains, buried and overhead electric facilities, telephone, cable television, fiber optic, and other public or private utilities shown on the drawings or otherwise known or discovered to be in the project area. 2. When active utilities are encountered, promptly take necessary measures to support and protect said utilities and maintain them in service. 3. If active utilities are damaged or interrupted as a result of work on the project, take appropriate measures to restore service immediately. Restoration of utility services " _under these circumstances shall be at the Contractor's expense. 4. Active utilities shown on the drawings to be relocated, or which require relocation due to unforeseen circumstances or conditions, shall be relocated in accordance with instructions from the Engineer. Generally, the respective utility owners shall be responsible to perform relocation work for their facilities. The Contractor shall cooperate with these efforts in every reasonable way and shall not be entitled to additional compensation for delays resulting from such relocations. B. Site Protection Measures Refer to Traffic Control Sheets for details, 2. Barricade and fence open excavations or depressions resulting from work during non - working hours and when not working in immediate area. Provide suitable warning devices adjacent to excavations and work areas. 3. Warning devices shall be kept operational during all non- working and non- active periods. C. Site Access Measures Pedestrian access to homes and businesses shall be maintained at all times. Temporary gravel surfaces shall be provided as directed by the Engineer. 02050 -2 2. Contractor shall perform demolition and removal operations so as to maintain vehicular access to adjacent properties and businesses to the maximum extent possible. D. Disposals No material or debris shall be buried within the project work area. All unsuitable material resulting from demolitions and removals shall be hauled to and disposed of at a Contractor - furnished site approved by the Engineer or to the landfill. The Contractor shall pay the current tipping fee at the landfill. 3.04 DEMOLITIONAND REMOVALS: A. Pavement and Sidewalk Removals I. Removal shall be to the limits noted on the plans or as directed(b3 the Engineer. 2. Pavement removal shall include brick, P.C. Concrete, ar}d -A..y Concrete pavements, driveways, alleys, parking lots, and sidewalks. Removal of chip seat or aggregate surfaces is not considered pavement removal. 3. Sawcuts shall be approved by the Engineer. 4. Removal operations shall conform to construction phasing noted on the plans or as directed by the Engineer. B. Sewer Abandonment and Removal 1. Removal shall be at the locations and to the limits noted on the plans or as directed by the Engineer. 2. Backfill under and within 5 feet of paved surfaces shall be Class A crushed stone compacted to 95% Standard Proctor Density. The top 12 inches directly below paved surfaces shall be Class A crushed stone compacted to 98% Standard Proctor Density. Other excavations shall be backfilled with suitable excavated material, compacted to 90% Standard Proctor Density. 3. Sewers to be abandoned, but not removed, shall be filled with an approved non - shrink flowable mortar and bulkheaded at each end with concrete. 4. Select castings shall be delivered to the pollution control plant at 1000 S. Clinton Street as directed by the Engineer. 11 /00 sh ... &.gi cuer pees- i102050.doo 02050 -3 SECTION 02100 SITE PREPARATION PART1- GENERAL 1.01 SUMMARY: A. Furnish labor, material, tools and equipment to prepare site as indicated and specified. 1.02 REFERENCES. A. ]DOT Standard Specifications. PART2- PRODUCTS None. PART 3- EXECUTION 3.01 TECHNIQUES, A. Except as amended in this document, the work in this section will conform with the following divisions and sections of the MOT Standard Specifications: Division 21. Earthwork, Subgrades and Subbases. Section 2101. Clearing and Grubbing. Division 25. Miscellaneous Construction. Section 2519. Fence Construction. 3.02 EXISTING TREES, SHRUBS AND VEGETATION. A. All trees, shrubs and vegetation shall remain and be protected from damage unless specifically noted as "REMOVE" or "CLEAR AND GRUB" on the plans or as directed by the Engineer. B. No construction materials and /or equipment are to be stored, piled, or parked within the trees' drip line. C. Contractor is responsible for damage outside the limits of construction, and for trees, shrubs and vegetation not designated for removal. The Contractor's liability for tree and shrub damage will be based on the appraised value, not replacement value, and shall include the cost of appraisal by a qualified arborist. 02100 -1 3.03 EXISTING STRUCTURES AND PROPERTY: A. Remove existing signs and posts within the construction area as directed by the Engineer. All pennanent traffic signs will be removed, stored, and replaced by the City of Iowa City. Contractor shall provide 48 hour minimum advance notice for sign removal and for sign replacement. Permanent signs will be replaced prior to concrete pours. B. Move mailboxes to a location approved by the Engineer prior to closing road. Salvage and store any unique supports for mailboxes. Restore mailboxes and their supports to their prior location and condition when road is reopened. 3.04 EXISTING FENCING: A. Only fencing designated by the Engineer shall be removed. B. Sections of fence removed for construction shall be replaced per the applicable bid item. If not addressed, replace with new materials. 3.05 EXISTING UTILITIES: A. Contact appropriate utility representative to verify the presence and location of buried utilities in the construction area. 3.06 EROSIONCONTROL: A. Comply with Iowa City Code and Section 02270, Slope Protection and Erosion Control. 02100 -2 SECTION 02220 EARTH EXCAVATION, BACKFILL, FILL AND GRADING PART1- GENERAL 1.01 SUMMARY: A. Excavating, placing, stabilizing and compacting earth, including trench and rock excavation, addition of borrow and backfill, disposal of excavated material, and topsoil, strip, salvage and spread. 1.02 REFERENCES: A. MOT Standard Specifications. 1.03 QUALITYASSURANCE: A. Whenever a percentage of compaction is indicated or specified, use percent of,maximum density at optimum moisture as determined by ASTM D698 -91, unless noted otherwise. B. Borrow sites and materials shall be approved by the Engineer prior to use. PART2- PRODUCTS 2.01 MATERIALS: A. Granular backfill material shall consist of Class A Crushed Stone, ]DOT Standard Specification Section 4120.04 and Section 4109, Gradation No. 11. PART 3 - EXECUTION 3.01 TECHNIQUES: A. Except as amended in this document, the work in this section will conform with the following divisions and sections of the MOT Standard Specifications: Division 21. Earthwork, Subgrades and Subbases. All sections Division 24. Structures. Section 2402. Excavation for Structures. 3.02 TOPSOIL: A. Strip and stockpile topsoil fi•om lawn, grass, and crop areas for surface restoration and landscaping work. Strip topsoil to a uniform depth to provide sufficient quantity of material for placement of a minimum of 9 inches of topsoil for surface restoration and 02220 -1 landscaping. Protect topsoil from mixture with other materials such as aggregate and from erosion. Removal of topsoil from the site is not permitted. 3.03 DRAINAGEANDDETVATERING: A. Provide and maintain ample means and devices (including spare units kept ready for immediate use in case of breakdowns) to intercept and /or remove promptly and dispose properly of all water entering trenches and other excavations. Keep such excavations dry until the structures, pipes, and appurtenances to be built therein have been completed to such extent that they will not be floated or otherwise damaged. B. Dispose of all pumped or drained water without undue interference to other work, or causing damage to pavements, other surfaces, or property. Provide suitable temporary pipes, flumes, or channels for water that may flow along or across the work site. C. Take all precautions necessary to prevent damage to the work by rain or by water entering the site, whether water entry be overland or by groundwater. 3.04 TRENCHEXCAVATION: A. General I. Excavate trench by machinery to, or just below, designated subgrade when pipe is to be laid in granular bedding or concrete cradle, provided that material remaining at bottom of trench is only slightly disturbed. 2. Do not excavate lower part of trenches by machinery to subgrade when pipe is to be laid directly on bottom of trench. Remove last of material to be excavated by use of hand tools, just before placing pipe. Hand shape bell holes and form a flat or shaped bottom, true to grade, so that pipe will have a uniform and continuous bearing. Support on firm and undisturbed material between joints, except for limited areas where use of pipe slings have disturbed bottom. B. Protection Barricade and fence open excavations or depressions resulting from work during non - working hours and when not working in immediate area. C. Trench Width Make pipe trenches as narrow as practicable and safe. Make every effort to keep sides of trenches firm and undisturbed until backfilling has been completed and consolidated. 2. Excavate trenches with vertical sides between elevation of center of pipe and elevation I foot above top of pipe. 3. Refer to plans for allowable trench widths within the pipe envelope for various types, sizes and classes of pipe. D. Trench Excavation in Pill 02220 -2 Place fill material to final grade or to a minimum height of 6 feet above top of pipe when pipe is to be laid in embankment or other recently filled areas. Take particular care to ensure maximum consolidation of material under pipe location. Excavate pipe trench as though in undisturbed material. E. Excavation Near Existing Structures Discontinue digging by machinery when excavation approaches pipes, conduits, or other underground structures. Continue excavation by use of hand tools. 2. Excavate exploratory pits when location of pipe or other underground structure is necessary for doing work properly. F. Disposal of Unsuitable Soil 1. The Contractor shall notify the Engineer and Iowa Depaidment of Natural Resources (DNR) if soil contamination is found or suspected during excavation. 2. Soil disposal and remediation method shall be an option outlined in the [DOT Construction Manual Section 10.22, and approved by the Iowa DNR arid; City. The Contractor is not to proceed with soil removal and remediation measures until instructed by the Engineer. 3. Disposal site to be provided by the Contractor and approved by the Engineer and Iowa DNR. 4. Contractor is responsible for completing and filing all necessary Federal, State and local government agency forms and applications. G. Care of Vegetation and Property Use excavating machinery and cranes of suitable type and operate with care to prevent injury to trees, particularly to overhanging branches and limbs and underground root systems. 2. All branch, limb, and root cuttings shall be avoided. When required, they shall be performed smoothly and neatly without splitting or crushing. Trim injured portions by use of a chainsaw or loppers for branches, or an ax when working with roots. Do not leave frayed, crushed, or torn edges on any roots 1" or larger in diameter or on any branches. Frayed edges shall be trimmed with a utility knife. Do not use tree paint or wound dressing. If conflicts with large roots and branches are anticipated, notify the Engineer. 3. No construction materials and /or equipment are to be stored, piled, or parked within the tees' drip line. 4. Excavators and loaders used on brick surfaces shall be limited to those with rubberized tracks or rubber tires. Do not use or operate tractors, bulldozers, or other equipment on paved surfaces when treads or wheels can cut or damage such surfaces. 02220 -3 6. Restore all surfaces which have been damaged by the Contractor's operations to a condition at least equal to that in which they were found before work commenced. Use suitable materials and methods for restoration. 7. Aerate all grassed and planter areas compacted by construction activities. 8. Utility lines, including drainage tiles, encountered shall be restored in one of the following ways: a. Repair or otherwise reconnect the utility across trench after trench has been backfilled, provided adequate drainage gradient is maintained, if applicable. b. Connect drainage tiles to nearest storm sewer. The Contractor shall document the location and elevation of any utility lines encountered. The Contractor shall notify the Engineer whenever a utility is encountered and submit the proposed method of restoring the utility for review and approval. All utility repairs shall be made prior to backfilling the trench. H. Water Services I. Permanent copper water service lines which are damaged (cut, nicked, bent, crimped, crushed, etc.) shall be replaced from the water main to the curb box with new copper service pipe, without any joints. The cost for this work shall be at the Contractor's expense. 2, In any excavation where existing lead or galvanized iron water services are in the excavation or disturbed area, the Contractor shall replace the existing lead or galvanized piping with new 1 -inch or larger copper water service pipe from the water main to the curb box. The Contractor will be paid per the applicable bid item. If there is no bid item, the unit price for the replacement of the water service shall be negotiated prior to commencement of the work. 3. When water service is disrupted, the Contractor shall make a reasonable attempt to restore the service within two hours. 4. Water service pipe shall be type k soft copper. 3.05 ROCICEXCAVATION.- A. Rock excavation will be considered Class 12 Excavation as defined in ]DOT Standard Specification Section 2102.02. B. Explosives shall not be used for rock excavation. 02220 -4 3.06 BACIfFILLING: A. General 1. Do not place frozen materials in backfill or place backfill upon frozen material. Remove previously frozen material or treat as required before new backfill is placed. B. Backfilling Excavations 1. Begin backfilling as soon as practicable and proceed until complete. 2. Material and Compaction a. Paved Areas: Under and within 5 feet of paved surfaces, including streets, sidewalks and driveways, backfill shall be Class A cruslied stone placed in one foot lifts compacted to 95% Standard Proctor Density. The top 12 inches directly below paved surfaces shall be Class' A crashed stone compacted to 98% Standard Proctor Density. If under pavement, backfill to bottom of the subgrade. If not under pavement, backfill to:within 12 inches of finished surface. b. All other areas: Backfill shall consist of suitable job excavated material placed in one foot lifts compacted to 90% Standard Proctor Density. If excavated material is unsuitable, backfill with Class A crushed stone to within 12 inches of finished surface. C. Do not place stone or rock fragment larger than 2 inches within 2 feet of pipe nor larger than 12 inches in backfill. Do not drop large masses of backfill material into french. C. Backfilling Around Structures Do not place backfill against or on structures until they have attained sufficient strength to support the loads, including construction loads, to which they will be subjected. Avoid unequal soil pressure by depositing material evenly around structure. 2. Backfill shall consist of Class A crushed stone placed in one foot lifts compacted to 95% Standard Proctor Density unless otherwise indicated or specified. 3.07 UNAUTHORIZED EXCAVATION.- A. When the bottom of any excavation is taken out beyond the limits indicated or specified, backfill, at Contractor's expense, Proctor Density. 11/00 shared lengineer\spea- ii \02220.dw with Class A crushed stone compacted to 95% Standard 02220 -5 SECTION 02270 SLOPE PROTECTION AND EROSION CONTROL PART1- GENERAL 1.01 SUMMARY.- A. Placement of silt fence, erosion control mat, engineering fabric, revetment" stone, and erosion stone. 1.02 REFERENCES: A. [DOT Standard Specifications. B. Iowa Department of Transportation Highway Division "Standard Road Plans Manual ", latest edition. 1.03 QUALITYASSURANCE. A. Revetment stone and erosion stone shall meet the abrasion and durability requirements of Section 4130 of the IDOT Standard Specifications, B. Engineering Fabrics (geotextile) shall be of a non -woven material and conform to the requirements of IDOT Engineering Fabric for Embankment Erosion Control. 1.04 STORAGE: A. Prior to use, geotextile shall be stored in a clean dry place, out of direct sunlight, not subject to extremes of either hot or cold, and with the manufacturer's protective cover in place. Receiving, storage, and handling at the job site shall be in accordance with the requirements in ASTM D 4873. PART2- PRODUCTS 2.01 MATERIALS: A. Except as amended in this document, the materials in this section will conform with the following divisions and sections of the IDOT Standard Specifications: Division 41. Construction Materials. Section 4130. Revetment Stone and Erosion Stone. Section 4169. Erosion Control Materials. Section 4196. Engineering Fabrics. 02270 -1 PART 3- EXECUTION 3.01 TECHNIQUES: A. Except as amended in this document, the work in this section will conform with the following divisions and sections of the [DOT Standard Specifications: Division 25. Miscellaneous Construction. Section 2507. Concrete & Stone Revetment. and the following [DOT Standard Road Plans: RC -5 Wood Excelsior Mat RC -16 Silt Fence 3.02 SCHEDULE: A. Silt fence shall be installed at locations indicated on the plans immediately upon completion of grading. Wood excelsior mat shall be placed and staked in seeded areas of swales immediately following seeding. 3.03 GEOTEXTILEr A. Surface Preparation I. The surface on which the geotextile is to be placed will be graded to the neat lines and grades as shown on the plans. The surface will be reasonably smooth and free of loose rock and clods, holes, depressions, projections, muddy conditions and standing or flowing water. B. Placement L Prior to placement of the geotextile, the soil surface will be inspected for quality of design and construction. The geotextile will be placed on the approved surface at the locations and in accordance with the details shown on the plans. The geotextile will be unrolled along the placement area and loosely laid (not stretched) in such a manner that it will conform to the surface irregularities when material is placed on or against it. The geotextile may be folded and overlapped to permit proper placement in the designated area. 2. The geotextile will be joined by overlapping a minimum of 18 inches (unless otherwise specified on the plans or by the manufacturer), and secured against the underlying foundation material. Scenting pins, approved and provided by the geotextile manufacturer, shall be placed along the edge of the panel or roll material to adequately hold it in place during installation. Pins will be steel or fiberglass formed as a "U ", "L ", or "T" shape or contain "ears" to prevent total penetration. Steel washers will be provided on all but the "U" shaped pins. The upstream or up- slope line will be inserted through both layers along a line through approximately the midpoint of the overlap. At horizontal laps and across slope laps, securing pins will be insetted through the bottom layer only. Securing pins will be placed along a line approximately 2 inches in from the edge of the placed geotextile at intervals not to exceed 12 feet unless otherwise specified. Additional pins will be installed 02270 -2 as necessary and where appropriate, to prevent slippage or movement of the geotextile. The use of securing pins will be held to the minimum necessary. Pins are to be left in place unless otherwise specified. 3. Should the geotextile be. torn or punctured, or the overlaps disturbed, as evidenced by visible damage, subgrade pumping, intrusion, or grade distortion, the backfill around the damaged or displaced area will be removed and restored to the original approved condition. The repair will consist of a patch of the same type of geotextile being used, overlapping the existing geotextile. Geotextile panels joined by overlap will have the patch extend a minimum of 2 feet from the edge of any damaged area. 4. The geotextile will not be placed until it can be anchored and protected with the specified covering within 48 hours or protected from exposure to ultraviolet light. In no case will material be dropped on uncovered geotextile from a height greater than 3 feet. 11/00 s haredsengineedspees- ii \02270,doe 02270 -3 SECTION 02510 HOT MIX ASPHALT PAVING, BITUMINOUS SEAL COAT, AND MILLING. PART 1- GENERAL 1.01 SUMMARY.- A. Furnish labor, materials, tools and equipment to prepare, shape, trim and compact subgrades to receive Hot Mix Asphalt paving. B. Furnish labor, materials, tools and equipment to place and compact Hot Mix Asphalt paving. C. Seal Coat. 1.02 REFERENCES: A. IDOT Standard Specifications. B. IDOT Supplement Specification 01014. 1.03 QUALITYASSURANCE: A. Use adequate numbers of skilled workers who are thoroughly trained and experienced in the necessary crafts and who are completely familiar with the specified requirements and the methods needed for proper performance of the work in this section. B. Quality testing: I. As per IDOT Supplemental Specification 01014, section 04 Quality Control Program. PART2- PRODUCTS 2.01 MATERMLSr A. Except as amended in this document, the materials in this section will conform with the following divisions and sections of the IDOT Standard Specifications: Division 23. Surface Courses. SS -01014 Hot Mix Asphalt Mixtures. Division 41. Construction Materials, Section 4126. Type B Aggregate for I -tot Mix Asphalt. Section 4127. Type A Aggregate for Hot Mix Asphalt. Section 4137. Asphalt Binder. PART 3- EXECUTION 02510 -1 3.01 TECHNIQUES: A. Except as amended in this document, the work in this section will conform with the following divisions and sections of the IDOT Standard Specifications: Division 21. Earthwork, Subgrades and Subbases Section 2122. Paved Shoulders. Division 22. Base Courses. Section 2203. Hot Mix Asphalt Bases. Section 2212. Base Repair. Section 2213. Base Widening. Division 23. Surface Courses, SS -01014 Hot Mix Asphalt Mixtures. Section 2307. Bituminous Seal Coat. Section 2316. Pavement Smoothness Division 25. Miscellaneous Construction Section 2529. Full Depth Finish Patches. Section 2530. Partial Depth Finish Patches. 3.02 OPENING TO TRAFFIC: A. Opening to traffic, including Contractor's vehicles, will not be permitted until the pavement or surface treatment has cured sufficiently to prevent damage as determined by the Engineer. Is B. Opening to traffic shall not constitute final acceptance. r 3.03 COMPLETION OF WORK: A. W11,66 traffic is allowed upon the pavement, the Contractor shall begin remaining work and clean up. All streets shall be finished and opened to the public as soon as practicable. 3.04 AREAff TO BE OVERLAYED: A. Division I - Iowa City Streets - Asphalt Overlay NAME LIMITS S. Dubuque Street Prentiss Street to Iowa Interstate Railroad Wright Sheet S. Dubuque Sheet to S. Clinton Street 3.05 PAVEMENTMILLING A. All existing asphalt pavement shall be milled to the elevation of the original pavement across the fill width of the pavement. B. Except as noted herein, all asphalt millings remain the property of the City and will be delivered to the Iowa City Landfill located on Hebl Ave.. 02510 -2 Pavement millings needed to construct temporary fillets shall be placed at all vertical edges to facilitate traffic. C. Pavement milling shall occur no sooner than ten (10) working days prior to overlay. The exception to this would be if after removal of the old asphalt overlay, the existing surface could no longer support prolonged traffic, then the contractor would be required to place the leveling course immediately following milling and cleaning. D. A header joint shall be milled at full paving width at transitions where new Hot Mix Asphalt Paving abuts an existing Portland Cement Concrete Paving. The PCC paving shall be milled at a depth of no less than two (2) inches over a paving length of 8 feet. This milling shall be considered incidental to the Cleaning and Preparation of Base item. 3.06 CLEANINGAND PREPARATION OFBASE A. The Contractor shall be responsible for cleaning all surfaces prior to operation. All loose material shall be removed from the surface and cracks by brooming or air blowing. The City's street sweeping crew and equipment will be available to aid the Contractor with sweeping operations prior to cleaning each street on a one -time basis only. Any subsequent sweeping required will be at the Contractors expense. 3.07 AGGREGATES A. Type. 1. Type B aggregates shall be used in base mixtures. 2. Type A aggregates shall be used in intermediate and surface mixtures.. B. Gradation. L A %2 -inch mix shall be used on all streets and all divisions of this project. 3.08 ADJUSTING STRUCTURES A. The Contractor shall adjust all existing manhole rings, valve boxes, catch basins, etc. within the existing pavement. This will include not only structures that need to be adjusted up but also those structures that need to be adjusted down, such as in the areas of fill -depth grinding. The leveling course will be placed over the structure. The material over the casting will be removed and the casting will be adjusted to '' /e" below the final finished grade. The street surface course will then be placed. New castings to replace old will be provided by the City to be installed by the Contractor where deemed necessary by the Engineer; however, the cost of any damage caused by the Contractor will be deducted from the Contractor's final payment. Adjustment to final grade may be accomplished by raising the casting, bricking and grouting under the casting or concrete adjustment rings. Any removal of existing pavement around the structures must be saw cut. No other methods shall be used unless authorized by the Engineer. The gas and water companies will furnish the necessary adjustment rings to the Contractor at no charge to adjust valve boxes. 3.09 ASPHALT BINDER A. Asphalt binder shall be PG 64 -22 on all streets and divisions of this project. 02510 -3 3.10 EXISTING STREET SURFACES A. Where the proposed asphalt overlay meets an existing asphalt street surface, the existing surface shall be sawed and removed or milled as directed by the Engineer so that a clean, smooth and durable joint will be made between existing and proposed surfacing. 3.11 ASPHALT CEMENT CONCRETE REPAIR A. Asphalt concrete repair shall consist of removing the existing asphalt overlay, brick or any other material, and any unsuitable subbase; replacing subbase as necessary; compacting subbase; placing and compacting full -depth asphalt to the level of surrounding brick or asphalt. Multiple lifts may be necessary. Bricks removed for subbase or base repair shall be cleaned and delivered to the Iowa City Street Department located at 3800 Napoleon Lane. 3.12 HOTMIXASPIIALTPLACEMENT A. Lifts A 1'/2" depth intermediate course followed by a 1 %z" depth surface course. B. Compaction Class 1B compaction shall be used on all streets and divisions of this project. 3.13 BITUMINOUS SEAL COATAND SURFACE TREATMENT WON(. A. Work shall conform to Standard Specification Section 2307 unless specified otherwise in this document. Cover aggregate shall be V Gradation 21. Bituminous material shall be MC -3000. Primer shall be MC -70. 1.15 PAVEMENTSMOOTHNESSr 0 Pavement Smoothness shall meet the requirements of Section 2316 of the Iowa Department of Transportation Standard Specifications for Highway and Bridge Construction. The pavement smoothness shall be determined by Schedule B of the Pavement Charts and evaluation will be preformed by the Owner. The Section 2316.08 applyto this project, there will be no smoothness incentive payment. 02510 -4 Profilograph testing for Payment shall not SECTION 02520 PORTLAND CEMENT CONCRETE PAVING PART 1- GENERAL 1.01 SUMMARY: A. Furnish labor, materials, tools and equipment to prepare, install, shape, trim and compact subgrades to receive Portland Cement Concrete paving. B. Furnish labor, materials, tools and equipment to form, place, reinforce, finish, joint and cure Portland Cement Concrete roadways, parking area slabs, driveways, and sidewalks at the locations and grades noted on the plans. 1.02 REFERENCES. A. IDOT Standard Specifications. 1.03 QUALITYASSURANCE: A. Use adequate numbers of skilled workers who are thoroughly trained and experienced in the necessary crafts and who are completely familiar with the specified requirements and the methods needed for proper performance of the work in this section. B. Quality testing: Compressive Strength Tests. 2. Entrained Air. 3. Slump. 4. Density Tests of Base and Subgrade. PART2- PRODUCTS 2.01 MATERIALS: A. Except as amended in this document, the materials in this section will conform with the following divisions and sections of the 1DOT Standard Specifications: Division 41. Construction Materials, Sections 4101 through 4122. B. Aggregate durability class for all Portland Cement Concrete paving shall be Class 3. 02520 -1 PART 3- EXECUTION 3.01 TECHNIQUES. A. Except as amended in this document, the work in this section will conform with the following divisions and sections of the [DOT Standard Specifications: Division 2 L Earthwork, Subgrades and Subbases. Section 2111. Granular Subbase. Division 22. Base Courses. Section 2201. Portland Cement Concrete Base. Section 2212. Base Repair, Section 2213. Base Widening. Division 23. Surface Courses Section 2301. Portland Cement Concrete Pavement. Section 2302. Portland Cement Concrete Pavement Widening. Section 2310. Bonded Portland Cement Concrete Overlay. Section 2316, Pavement Smoothness, Division 25. Miscellaneous Construction. Section 2512, Portland Cement Concrete Curb and Gutter. Section 2515. Removal and Construction of Paved Driveways. Section 2517. Concrete Header Slab. Section 2529. Full Depth Finish Patches. Section 2530. Partial Depth Finish Patches. 3,02 CURING AND PROTECTION OF PA DEMENT.' A. Curing compound shall be applied immediately following finishing of the concrete, including back of curb. 3.03: - ENVIRONMENTAL REQUIREMENTS. A. Wher concrete is being placed in cold weather and temperatures may be expected to drop below 35 °F, the following requirements must be met for concrete less than 36 hours old: 24 Hpji r Temperature Forecast Covering Minimum 35 -32° F One layer plastic or burlap. Minimum 31 -25° F One layer plastic and one layer burlap or two layers burlap. Below 25° F Commercial insulating material approved by the Engineer. B. Concrete shall be protected from freezing temperatures until it is at least five days old. C. Concrete damaged by cold weather shall be removed and replaced at the Contractor's expense. 02520 -2 D. Maximum allowable concrete temperature shall be 90° F. E. If concrete is placed when the temperature of the concrete could exceed 90° F, the Contractor shall employ effective means, such as precooling of aggregates and /or mixing water, as necessary to maintain the temperature of the concrete as it is placed below 90° F. 3.04 OPENING TO TRAFFIC: A. Opening to traffic, including Contractoi's vehicles, will not be permitted until the compressive strength of 6" dia, x 12" cylinders is at least 3,000 lb. per square inch. B. All joints in the pavement shall be cleaned and sealed prior to opening the street(s) to traffic of any kind. C. Opening to traffic shall not constitute final acceptance. 3.05 COMPLETION OF IVORK; A. When traffic is allowed upon the pavement, the Contractor shall begin remaining work acid clean up. All streets and sidewalks shall be finished and opened to the public ids soon as practicable. B. Contractor shall notify the Engineer if weather conditions make it difficult to use Class ,M concrete, when specified. 11 /00 ,hure&ngffimVp,.s-i�102520.d. 02520 -3 SECTION 02524 CURB RAMPS PART1- GENERAL 1.01 SUMMARY.- A. Construct sidewalk curb ramps to meet ADA specifications. 1.02 REFERENCES: A. Americans with Disabilities Act (ADA): Accessibility Guidelines for Buildings and Facilities. B. City of Iowa City Design Standards. C. Iowa DOT Design Manual, Chapter 12: Sidewalks and Bicycle Facilities D. ASTM C309 — Liquid Membrane Forming Compounds for Curing Concrete. E. Figures section of specifications. 1.03 QUALITYASSURANCE. A. Use adequate number of skilled workers who are thoroughly trained and experienced in the necessary crafts and who are completely familiar with the specified requirements and the methods needed for proper performance of curb ramp construction. B. Slope measurements. Newly constructed curb ramps and sidewalks not meeting the slope requirements will be, at the Engineer's discretion, removed and replaced at the Contractor's expense. 1.04 SUBMITTALS., A. Comply with Section 0 13 10. B. Comply with Section 02520. 1.05 DELIVERY, STORAGEAND HANDLING. A. Deliver material in unopened containers with labels identifying contents attached. 1.06 PROJECT CONDITIONS. A. Comply with ACI requirements for cold and hot - weather concrete work. B. Pre - Installation Meeting PART2- PRODUCTS �anjti��rra�Fr�yq A. Concrete: Reference Section 2520. B. Water: Fresh, clean and potable. 02524 -1 C. Tactile / Detectable Warning Surface Tile I. Color: Brick Red Color shall be homogeneous throughout the tile. 2. Dimensions: Length and Width: Depth: Face Thickness: Warpage of Edge: 24" x 48" nominal or width of sidewalk 1.400" +/- 5% max. 0.1875 +/- 5% max. +/- 0.5% max. 1 Cast iron manufactured by Neenah Foundry, East Jordan iron Works, Metadome, or equivalent. PART 3 - EXECUTION 3.01 TECHNIQUES, A. Except as amended in this document, the work in this section will conform with Iowa DOT Design Manual, Chapter 12: Sidewalks and Bicycle Facilities and the following sections of the Americans with Disabilities Act (ADA) Accessibility Guidelines for Buildings and Facilities. Section 4. Accessible Elements and Spaces: Scope and Technical Requirements Section 14. Public Rights -of -Way 3.02 SLOPES: A. Cross slope refers to the slope that is perpendicular to the direction of travel. Running slope refers to the slope that is parallel to the direction of travel. B. Curb ramp cross slopes should be no greater than 1:48 or 2% to a level plane. C. Curb ramp running slopes should be no greater than 1:12 or 8.33% to a level plane unless existing conditions do not permit and layout is approved by the Engineer. Curb ramp running slope should be no less that 1:48 or 2.0% to a level plane. 3.03 PORTLAND CEMENT CONCRETE THICKNESS: A. 6-inch thick P.C.C. will be placed as indicated on project plans. B. 4 -inch thick P.C.C. will begin 4 feet off back of curb adjacent to a 6 or 8 -inch P.C.C. section, unless otherwise specified by the Engineer. 3.04 WIDTHS: A. Curb ramps widths may vary at the street back of curb and through the area of truncated domes. If necessary, transition width of ramps after truncated domes to match existing sidewalk for continuity. The minimum allowable width for curb ramps is 4 feet. Four -foot or matching widths are clear widths and do not include the flared sides or curved sides of a curb ramp. 3.05 CURB RAMPS GEOMETRICS: A. Different curb ramp types are shown in the plans. This project may include these or other curb ramp types not shown. Existing site conditions may require that alterations be made to proposed curb ramp design in order to provide a "best -fit ". Quantity changes due to these alterations will be paid for per 02524 -2 the unit price quoted on the Form of Proposal. B. The 6 -inch curb bordering the curb ramp will be paid separately in the Form of Proposal estimated quantities. 3.06 TEXTURED SURFACE: A. All sidewalk curb ramps designated by the Engineer or plan drawings shall be constructed with truncated domes conforming to ADA specifications. B. Detectable warning surfaces shall extend 24 inches in the direction of travel and the full width of the curb ramp. C. Detectable warning surfaces should be located so that the edge nearest the sheet is at the back of curb line. 3.07 INSPECTION: r A. Verify that subgrade is installed according to specifications and is free of conclitiops that could .b detrimental to performance of colored concrete. 3.08 LOCATIONS: A. Curb ramps are to be located directly across a street, alley or driveway fiom another existing or proposed curb ramp or sidewalk unless existing site conditions prevent this or are otherwise specified by the Engineer. 3.09 INSTALLATION: A. Concrete: Place and screed to required elevations as specified in Section 02520, B. Apply truncated domes per manufacturer's specifications. C. Protect concrete from premature drying, excessive hot or cold temperature and damage. D. Curing Compound: Apply per manufacturer's guide for rate and method. 02524 -3 SECTION 02518 PERVIOUS PORTLAND CEMENT CONCRETE (PCC) PAVEMENT PART 1 - GENERAL 1.01 SECTION INCLUDES A. Subgrade Preparation for Pervious Portland Cement Concrete (PCC) Pavement B. Placement of Filter Aggregate C. Placement of Pervious PCC Pavement c D. Testing of Pervious PCC Pavement 1.02 DESCRIPTION OF WORK - Construct pervious PCC pavement for treatment of stormwater runoff 1.03 SUBMITTALS A. Concrete Materials: 1. Proposed concrete mixture proportions including all material weights, volumes, fresh design unit weight per 3.09, B, water -to- cement ratio, in -place design density, and in -place design void content. 2. Aggregate types, sources, and gradations from a qualified testing agency. 3. Material certifications signed by manufacturers certifying that each of the following materials complies with the specified requirements: a. Cement. b. Supplementary cementitious materials. c. Chemical admixtures. d. Fiber reinforcement. B. Filter Aggregate: Including aggregate type, source, gradation, and compacted void content. C. Project Details: Including jointing plan, schedule, construction procedures, and quality control plan. D. Qualifications: Comply with 1.07 below for contractor and concrete producer. E. Involved Parties: Submit a list of all subcontractors, material suppliers, and testing laboratories. 1.04 SUBSTITUTIONS 02518 -1 Comply with the requirements of the contract documents. 1.05 DELIVERY, STORAGE, AND HANDLING Comply with the requirements of the contract documents. 1.06 SCHEDULING AND CONFLICTS Comply with the requirements of the contract documents. 1.07 SPECIAL REQUIREMENTS A. Quality Control: 1. General: Test and inspect concrete materials and operations as work progresses. Failure to detect defective work or material early could result in rejection if a defect is discovered later. 2. Contractor Qualifications: a. Provide employees who have a minimum of one of the following National Ready Mixed Concrete Association (NRMCA) certifications: 1) One certified Pervious Concrete Craftsman, or 2) Two certified Pervious Concrete Installers, or 3) Three certified Pervious Concrete Technicians. b. Certified employees must be overseeing placement or working as part of the placement crew during all pervious PCC placement. c. Alternative qualifications or previous project experience, in lieu of required certification, may be submitted fo;Engineerfor approval prior to submitting the bid. 3. Ready Mixed Supplier Qualifications: a. Maripfactprpr of ready mixed concrete products who complies with ASTM C 94 for production facilities and equipment. b. Manufacturer certified according to NRMCA's "Certification of Ready Mixed Concrete Production Facilities." , c. Ready mixed plant must have current Iowa DOT plant calibration. d. Provide at least one employee overseeing production of pervious PCC mix who is a NRMCA certified Pervious Concrete Technician. 4. Test Panel: a. Prior to installation of pervious PCC at the site, construction of a test panel may be required and considered incidental to bid item. Such test panel shall follow the following provisions: 02518 -2 1) Construct a minimum 10 foot by 15 foot pervious PCC panel equal to the proposed thickness 2) Install, consolidate, joint, and cure the test panel using the materials, mixture proportions, equipment, and personnel proposed for the project. 3) During test panel installation, provide density and workability testing complying with 3.09. 4) Test panel may be constructed on -site and demolished after test approval or may be constructed at an off -site location. 5) Upon approval of the Engineer, the test panel may be constructed on -site and incorporated as part of the project. When the test panel is used as part of the project, it must be placed at least 7 days prior to placement of the main pervious PCC sections to allow for approval of the hardened section. 6) Acceptance of the test panel will be based on the following: a) Organized construction team with proper equipment and installation practices. b) Unit weight of mixture within 5 pounds per cubic foot of the design weight, tested according to 3.09, B. c) Acceptable surface finish, joint details, thickness, and curing procedures. 7) If the Engineer determines the test panel is unacceptable, the test panel will be removed and redone until accepted. b. Experienced pervious PCC contractors and suppliers may submit written documentation of previous successful pervious PCC installations. Based on experience, the Engineer may waive the requirement for test panel construction. 5. Pre - placement Conference: a. Schedule a pre - placement conference with the Engineer and Concrete Supplier within one week prior to beginning placement. Preferably, the meeting will take place after the test section has been placed. The pervious PCC supplier and the placement crew supervisor, who will be on -site during pervious PCC placement, must be in attendance. b. During the pre - placement conference, explain knowledge and understanding of how pervious PCC placement differs from traditional concrete. Explain how unexpected conditions (weather, equipment breakdowns, etc.) will be handled. B. Weather Restrictions: 1. Do not place pervious PCC when the forecasted ambient air temperature is 40 °F or lower during the 7 days following the placement, unless a cold weather protection plan has been submitted and approved by the Engineer. 2. Do not place pervious PCC when the ready mixed supplier has switched to heated mixing water for winter production. 02518 -3 3. Do not place pervious PCC when the ambient air temperature is 90 °F or higher, unless a written hot weather plan has been submitted and approved by the Engineer. 4. Additional hydration stabilizing admixture is required in hot weather. PART2- PRODUCTS 2.01 ENGINEERING FABRIC Comply with Iowa DOT Section 4196, requirements for subsurface drainage. 2.02 UNDERDRAIN A. Provide slotted pipe(s) complying with the requirements for Type 1 Subdrain in SUDAS Section 4040. B. Provide 6 inch diameter collector pipes unless otherwise specified in the contract documents. C. Provide 4 inch diameter lateral pipes unless otherwise specified in the contract documents. 2.03 TYPE 1 FILTER AGGREGATE Provide aggregate complying with Iowa DOT Section 4115, Gradation No. 3, Class 2 durability gravel or crushed stone (AASHTO M 43 /ASTM D 448, Size 57). 2.04 PERVIOUS PORTLAND CEMENT CONCRETE A. Portland Cement: Type I or Type II complying with Iowa DOT Section 4101 and Materials I.M. 401. B. Supplementary Cementitious Materials: 1. Fly ash complying with Iowa DOT Section 4108. 2. Ground Granulated Blast Furnace Slag (GGBFS) complying with Iowa DOT Section 4108. C. Aggregate: 1. Coarse Aggregate: a. With at least 36 % voids calculated on a compacted dry bulk density basis complying with ASTM C 29. b. Washed, clean, and free of dirt and excess fines. c. Specific gravity greater than 2.5. d. Absorption of less than 2.5 %. e. Aggregate should be in a saturated surfaced dry condition. 2. Fine Aggregate: Concrete sand complying with Iowa DOT Section 4110, Gradation No. I (ASTM C 33). 3. Combined Aggregate: 02518 -4 a. Combine coarse and fine aggregate to comply with gradation limits in the table below. b. Provide at least 5% of combined aggregate weight from fine aggregate. D. Admixtures: 1. Air Entraining Admixture: a. Comply with ASTM C 260. b. Dosed at 2 oz/cwt. j 2. Chemical Admixtures: a. Mid -Range Water Reducing Admixtures: 1) Polycarboxylate type water reducer complying with ASTM C 494, Type A. 2) Provide one of the following, or approved equal: a) Catexol Hydrosense, Axim Concrete Technologies b) Duralflux 77, Axim Concrete Technologies c) Polyheed 1725, BASF Admixtures, Inc. d) Sikaplast 500, Sika Corporation b. Extended Control Admixtures (hydration stabilizers): 1) Comply with ASTM C 494, Type B (Retarding) or Type D (Water Reducing / Retarding). 2) Provide one of the following: a) Delvo Stabilizer, BASF Admixtures, Inc. b) Recover, W.R. Grace & Company 02518 -5 Percent Passing Sieve Size Max. Min. I %z" 100 100 - %2" 94 100 3/8" 38 99 No. 4 5.5 44 No. 8 4.5 13 No. 16 3.5 11 No. 30 2 7 No. 50 0.5 4 No. 100 0 2 D. Admixtures: 1. Air Entraining Admixture: a. Comply with ASTM C 260. b. Dosed at 2 oz/cwt. j 2. Chemical Admixtures: a. Mid -Range Water Reducing Admixtures: 1) Polycarboxylate type water reducer complying with ASTM C 494, Type A. 2) Provide one of the following, or approved equal: a) Catexol Hydrosense, Axim Concrete Technologies b) Duralflux 77, Axim Concrete Technologies c) Polyheed 1725, BASF Admixtures, Inc. d) Sikaplast 500, Sika Corporation b. Extended Control Admixtures (hydration stabilizers): 1) Comply with ASTM C 494, Type B (Retarding) or Type D (Water Reducing / Retarding). 2) Provide one of the following: a) Delvo Stabilizer, BASF Admixtures, Inc. b) Recover, W.R. Grace & Company 02518 -5 c. Make water reducer and hydration stabilizer available at the project site for re- dosing if required. E. Fiber Reinforcement: 1. Comply with ASTM C 1 116. 2. Provide fibers with a maximum length of 1 1/2 inches. F. Water: 1. Comply with Iowa DOT Section 4102. 2. Do not use heated water. G. Mixture Proportions: Develop and furnish a proposed concrete mixture complying with the requirements below. Trial mixtures should be placed to establish proper proportions and determine expected behavior. 1. Concrete mixture density between 115 pcf to 130 pcf determined by ASTM C 1688. 2. Volumetric void content from 15% to 25 %. 3. Cementitious content from 500 pry to 600 pcy. 4. Supplementary Cementitious Material (SCM): a. Up to 50% replacement for cement. b. Maximum of 25% for fly ash and 50% for GGBFS. c. SCMs are recommended at 35% slag and I S% fly ash by weight of total cementitious materials. 5. Water -to- cementitious materials (w /c) ratio from 0.29 to 0.34. 6. Admixture Dosing (for all mixes): a. Air Eittrainitrg Agent:: Air content of pervious PCC cannot be measured. Dose according to admixture company reconitnead' ons for concrete exposed to severe freeze /thaw conditions. b. Mid -range Water Reducer: Dose at 6 ounces per 100 pounds of cementitious material. e. Hydration Stabilizer: 1) Delve: 6 to 12 ounces per 100 pounds of cementitious material. 2) Recover: 7.5 to 15 ounces per 100 pounds of cementitious material. 3) Use higher dosage rates for placement in hot weather. 2.05 ISOLATION JOINT MATERIAL Comply with SUDAS Section 7010, 2.02, L. 02518 -6 2.06 CURING A. Polyethylene sheeting complying with ASTM C 171. B. Minimum 6 mil thickness. C. Provide sheeting with a width at least 2 feet wider than pavement being placed. Roll sheeting onto a tube prior to concrete placement. D. Provide 2 by 4 lumber and sand bags to anchor polyethylene sheeting. E. Provide soybean oil based concrete curing compound or equivalent. PART 3- EXECUTION 3.01 EQUIPMENT A. Forms: Comply with SUDAS, Section 7010, 2.07. B. Roller Screed: Powered (hydraulic or electric) roller screed weighted with sand or Nater'to achieve a' weight of approximately 20 pounds per linear foot. C. Cross Rollers: Maximum weight of 100 pounds. D. Rolled Joint Former: Cross roller with a flange welded around its circumference at the midsection. Depth of the flange is between 1.5 and 2.0 inches. E. Hand Tamper: 8 inch by 8 inch cast iron. 3.02 PRE - INSTALLATION PROTECTION A. Complete grading, utility installation, and other earth disturbing operations prior to excavating for the permeable paver system. B. Prior to placing permeable interlocking concrete pavers, install sediment control practices upstream to protect the area from sediment in stormwater runoff from disturbed soil. 3.03 SUBGRADE PREPARATION FOR PERVIOUS PCC A. Do not compact or subject the subgrade area under the pervious PCC pavement to excessive construction equipment prior to placement of the engineering fabric. B. Excavate area to the elevations and grades specified in the contract documents. C. In areas where cuts are required, do not compact surface. After final elevation is achieved, scarify surface to a minimum depth of 3 inches to reduce compaction caused by construction equipment. D. Where fill materials are required, compact material to 92% of maximum Standard Proctor Density. Do not over - compact. 02518 -7 E. Fill and lightly re -grade any areas damaged by erosion, ponding, or traffic compaction prior to placing the engineering fabric. 3.04 ENGINEERING FABRIC A. Install engineering fabric over completed subgrade, including trench for underdrain when specified in the contract documents. B. Overlap adjacent strips of fabric a minimum of 6 inches. C. Extend fabric up the sides of the subbase trench to the bottom of the proposed pavement. 3.05 UNDERDRAIN A. Underdrain Collector Pipes: 1. Place 2 inches of filter aggregate in the bottom of the underdrain trench over engineering fabric. 2. Begin underdrain collector installation at the outlet and continue upgrade. 3. Lay underdrain collector pipe to the proper line and grade. Place pipe with perforations down. 4. Place filter aggregate over installed pipe in layers not more than 6 inches thick. Thoroughly tamp each layer with mechanical tampers. 5. Provide cleanouts where specified in the contract documents. Comply with SUDAS Figure 4040.232. 6. Connect underdrain collector to outlet. Comply with SUDAS Figure 4040.233. Install rodent guard on all underdrain pipe 6 inches or smaller. 7. Install underdrain cleanout pipes and observation wells as specified in the contract documents. �r> B. Underdrain Lateral Pipes: 1. PlacS 2 inches of filter aggregate over the bottom of the prepared subgrade at lateral pipe locations specified in title contract documents. 2. Lay underdrain lateral over filter aggregate to the proper line and grade. Place pipe with perforations down. 3. Connect underdrain laterals to underdrain collector with wye or tee fitting. 4. Install plug or cap on upstream end of lateral pipe. 3.06 FILTER AGGREGATE A. Place filter aggregate in 6 inch maximum lifts. If underdrain system is specified, take care not to damage or displace pipe during placement of filter aggregate. 02518 -8 B. Compact each lift with a maximum of two passes from a vibratory plate compactor or vibratory drum roller. Do not operate compaction equipment directly over underdrain, until a minimum of 12 inches of filter aggregate is placed over the underdrain. C. Install filter aggregate to the elevation specified in the contract documents. D. Proof roll completed filter aggregate subbase with a maximum S ton static roller. 3.07 PERVIOUS PCC PLACEMENT A. Forms: 1. The vertical face of previously placed adjacent concrete may be used. a. Protect previously placed concrete from damage. b. Do not apply form release agent to previously placed concrete. 2. Where adjacent pavement does not create a perimeter for the pervious PCC area, provide paving forms as follows: a. Set, brace, and secure forms to the lines, grades, and elevations specified in the contract documents. b. Extend forms to the full depth of the pavement. c. Install forms to allow continuous progress of work and so forms can remain in place at least 24 hours after concrete placement. d. Immediately before placing concrete, apply form release agent to form faces that will be in contact with concrete. B. Mixing and Hording: Batch, mix, and deliver in compliance with ASTM C 94, with the following exceptions. I. Deliver and discharge mixture completely within 60 minutes of the addition of mix water to the cement. 2. Delivery time may be extended to 90 minutes when dosages of hydration stabilizer are increased. 3. After 30 minutes of mixing time, re- dosing of admixtures at project site may be required to achieve workability. C. Initial Inspection and Adjustments: 1. Visually inspect each load for consistency and workability. 2. Perform inverted slump -cone test on each load as described in 3.09 until uniform consistency is achieved for all loads. a. If mixture flows from cone, workability is acceptable and mix may be placed. 02518 -9 b. If mixture flow is unacceptable, adjust as follows: 1) Add 1/2 gallon of water per cubic yard. 2) Mix for 3 minutes. 3) Retest mix for workability. 4) If mixture is still unworkable, acid 50% of the original dosage of hydration stabilizer and 1/2 gallon of water per cubic yard. 5) Mix for 3 minutes. 6) Retest mix for workability. If mixture is still unworkable, the load will be rejected. 7) Adjust subsequent loads at the plant. 3. Perform at least one fresh density test according to 3.09 at the mid -point of the load for the first concrete truck and for every five loads thereafter. Iowa 4. Perform at least one estimated in -situ unit weight test each day pervious PCC is placed and after each mix adjustment. D. Placing and Finishing: 1. Moisten subbase thoroughly prior to placement. 2. Deposit concrete into the forms by mixer truck chute, conveyor, or buggy. Do not pump pervious PCC. 3. Do not place concrete on frozen subgrade or subbase. i, 4. Do not push ondrag concrete into place or use vibrators to move concrete into place. Spread concrete with a- square -ended shovel or rake. 5. Do not allow foot 'traffic on fresh concrete. 6. Strike off the surface and compact the concrete with a roller screed. 7. Maintain a 1;- to 2 inch pile of concrete across the width of the front of the roller screed during the initial pass. 8. After the initial pass with the roller screed, hand place an additional 6 inch wide by 1/2 inch thick strip of loose mix around the perimeter of the pervious PCC surface. Fill the mix into the surface with a hand tamper until level with the adjacent surface. Additional passes of the roller will be allowed to smooth surface if necessary. 9. Roll the surface perpendicular to the direction of the roller screed with overlapping passes of the cross roller. Operate the cross roller on top of the polyethylene sheeting installed for curing. 10. Do not finish pervious PCC with floats or trowels. 02518 -10 11. Finish all edges of pervious PCC with a 1/2 inch radius edging tool. E. Jointing: 1. Pre- markjoint locations prior to beginning paving. 2. Joints may be sawed into the hardened concrete 24 hours after placement or constructed immediately after finishing with roller screed. For sawed joints, limit the time polyethylene sheeting is removed in order to prevent excessive evaporation. 3. Soybean oil cure may be placed prior to form ingjoitits. 4. Place formed joints with approved pizza - cutter type jointing roller. Only one pass of the roller is allowed for each joint. 5. Install isolation (expansion) joints where the pavement abuts the fixed vertical structures such as : buildings, manholes, and light poles. F. Curing: 1. Begin curing procedures within 10 minutes of the concrete being discharged or within 10 feet, behind the compaction roller, whichever comes first. 2. Apply soybean oil cure at rate recommended by manufacturer. Apply cure from two different directions to ensure complete coverage of porous surface. 3. Cover surface with polyethylene sheeting. Concrete must be covered within 10 minutes of discharging. 4. Additional rolling with cross roller, if necessary, may be completed after covering concrete with polyethylene sheeting. 5. Anchor sheeting by placing 2 by 4 lumber along the edge of the sheeting and weighting the lumber with sand bags. Do not place lumber or anchors directly on newly finished concrete. 6. Do not use mud clods, concrete clunks, or other debris to anchor the sheeting. 7. Additional anchoring will be required if the wind causes billowing of the sheeting during the curing period. 8. Keep the sheeting in place and maintain during the minimum 7 day curing period. 9. Do not allow vehicular traffic on the pavement until curing is completed. 3.08 POST PLACEMENT PAVEMENT PROTECTION A. Erosion and Sediment Control: Maintain erosion and sediment control practices until vegetation is established to prevent sediment in stormwater runoff from clogging the concrete pores. B. Pavement: 02518 -11 Keep polyethylene sheeting in place, properly secured, for at least 7 days after placement 2. Protect the pavement from heavy construction traffic, including trucks, skid steers, loaders, and all tracked vehicles until project completion. 3. Do not stockpile soil, mulch, compost, sand, gravel, crushed stone, or other loose materials on pervious PCC, or in areas where uncontrolled stormwater runoff could carry these materials to the pervious PCC and contaminate the pervious surface. 3.09 TESTING A. Inverted Slump Core Test: The purpose of the inverted slump cone is to determine if the delivered pervious PCC has sufficient workability for rapid discharge and to achieve the desired compaction using methods outlined in 3.07, D. 1. Fill inverted slump cone with plastic pervious PCC. Do not rod or compact. 2. Lift the cone to knee height with a smooth motion. If necessary, give the cone a jostle or mild shake to initiate flow. 3. If material flows from the cone, its workability is acceptable. 4. If material remains lodged in the cone, it does not have adequate workability. Remediation or rejection of the mix is required. 5. Comply with 3.07, C for remediation of mixtures determined to be unworkable. B. Verification of Fresh Design Unit Weight: After verifying correct workability using the inverted slump cone test in 3.09;A, determine the fresh concrete density and compare with the design density submitted by the concrete producer. 1. Filt.a unit weight container (commonly the bottom 1/4 cubic foot of an air pressure meter) of known weight and vo(u ne with fresh pervious PCC in two lifts. 2. Compact each layer with 20 drops of a standard proctor hammer. 3. Strike off the surface flush with the top of the unit weight bucket. 4. Calculate the fresh density. 5. Compare fresh density to the ASTM C 1688 design density specified for the mixture proportions. The allowable variation is plus or minus 5 pounds per cubic foot from the design unit weight. C. Estimated ILr -situ Unit Weight: Determine the estimated in- place, in -situ unit weight from the loose, uncompacted concrete state. 1. Fill a unit weight container (commonly the bottom 1/4 cubic foot of an air pressure meter) of known weight and volume with fresh pervious PCC concrete in two lifts. 2. Evenly distribute the concrete in the container but do not compact or consolidate. 02518 -12 3. Strike off the surface even with the top of the container. 4. Weigh the filled container and determine the unit weight of the uncompacted mix. 5. Calculate the estimated in -situ density by multiplying the uncompacted emit weight by the appropriate compaction factor provided in the table below: Pavement Thickness inches Compaction Factor 4 1.25 6 1.17 8 1.13 6. Compare estimated in -situ density to the design unit weight specified for the mix design. The allowable variation is plus or minus 5 pounds per cubic foot from the design unit weight. ;t SECTION 02660 WATER DISTRIBUTION PART1 GENERAL 1.1 SUMMARY: A. Furnish, install and test water distribution system as indicated and specified. 1.2 REFERENCES. A. This specification references the following documents. In their latest edition, the referenced documents form a part of this specification to the extent specified herein. In case of conflict, the requirements of this specification shall prevail. One copy of all references marked with a * ** shall be kept on the site, readily available and accessible to the Contractor during normal working hours. Copies inay be,obtained from the organizations or from the Iowa City Water Division at cost plus 15%. B. City of Iowa City 1. Reference Manual: City Code of Ordinances Chapter 3, 4, &' 10, -Iowa City Municipal Design Standards, Earth Excavating, Backfill &, Grading Specifications - Section 02220, Accepted Products for Water Distribution Materials Per Specifications — Section 02660, Water Distribution - Section 02660, Water Service Work for Contractors Specifications - Section 02665, Iowa City Water Division Policies & Procedures Manual, Backflow Ordinance - Chapter 5. C. American National Standards hrstitute and American Water Works Combined Standards: 1. ANSIAWWA-C104/A21.4: Cement - Mortar Lining for Ductile -Iron Pipe and Fittings for Water 2. ANSUAWWA- C105/A21.5 -99: Polyethylene Encasement for Ductile -Iron Pipe Systems 3. ANSUAWWA- C110 /A21.10: Ductile -Iron and Gray -Iron Fittings, 3 -inch through 48 -inch, for Water and Other Liquids 4. ANSUAWWA- CI11 /A21.11: Rubber- Gasket Joints for Ductile -Iron Pressure Pipe and Fittings 5. ANSUAWWA- Cl 50/A21.50: Thickness Design of Ductile -Iron Pipe 6. ANSUAWWA- C151/A21.51: Ductile -Iron Pipe, Centrifugally Cast, for Water or Other Liquids 7. ANSUAWWA- C153/A21.53: Ductile -Iron Compact Fittings, 3 -inch through 24 -inch, and 54 -inch through 64 -inch for Water Service 8. ANSUAWWA C502: Dry - Barrel Fire Hydrants 9. ANSUAWWA C504: Rubber- Seated Butterfly Valves 02660 -1 10. AWWA C509: Resilient- Seated Gate Valves for Water Supply Service. 11, ANSI/AWWA C510 Double Check Valve Backflow - Prevention Assembly 12. ANSI/AWWA C511 Reduced - Pressure Principal Backflow - Prevention Assembly 13. ANSI/AWWA C550: Protective Epoxy Interior Coatings for Valves and Hydrants 14. ANSI/AWWA C600 * * *: Installation of Ductile -Iron Water Mains and Their Appurtenances 15. ANSI/AWWA C651 * * *: Disinfecting Water Mains 16. ANSI/AWWA C900: Polyvinyl Chloride (PVC) Pressure Pipe, 4 -inch through 8 -inch for Water Distribution D. American Water Works Association: 1. AWWA Manual M23 * * *: PVC Pipe- Design and Installation 2. AWWA Manual M17 * * *: Installation, Field Testing, and Maintenance of Fire Hydrants E. American Society for Testing Materials: 1. ASTM D2241 F. Manufacturers Standardization Society: 1. MSS -SP -58 Pipe Hangers and Supports, Materials Design and Manufacture 2.: - ? MSS -SP -69 Pipe Hangers and Supports Selection and Application G" Uni -Bell PVC Pipe Association: UNI- B -3 -88 Recommended Practice for the hnstallation of Polyvinyl Chloride (PVC) Pressure Pipe (nominal diameters 4 -36 inch) complying with AWWA Standard C -900. 1.3 SUBMITTALS. A. Submit to the Engineer the following drawings or details for approval prior to installation. One copy of each with the approval stamp shall be kept at the work site at all times. B. Plans for initial operations and final operations: Special prepared drawings and typed list of sequences of steps are needed prior to any operation of water distribution system. Submit 2 weeks prior to date of planned operation. C. Shop, Working Drawings or Construction Plans showing: 1. Pipe layout with valves, fittings and hydrants shown 2. Bolts 02660 -2 3. Joints 4. Tapping sleeves, couplings, and special piping materials. 5. Polyethylene 6. Thrust block designs and details 7. Special backfill D. Certificates: Sworn certificates of shop tests showing compliance with appropriate standard for all piping materials. 1.4 QUALITYASSURANCE: A. Engineer reserves the right to inspect and test by independent, service at manufacturer's plant or elsewhere at Engineer's expense. B. Contractor shall conduct visual inspection before installation. 1.5 TIME: A. All work which requires shutdown of active water mains must -be completed as quickly as possible to minimize inconvenience to the consumers' -aud'dsk to the community. B. Amount of advance notice required to the Iowa City Water Division when materials or services are supplied by the Division are listed below. Serve notice to the Water Division at 356 -5160. 1. For tapping service, provide 24 hours notice. 2. For notice to customers of disruption of water service, provide 48 hours notice. This work will be completed with the assistance of Water Division personnel. 3. For review, comments, and approval of plans of operation, provide 3 days notice. 4. For locations of underground facilities, provide 48 hours notice. PART 2 PRODUCTS 2.1 All products used for this work shall be from the list of "Accepted Products for Water Distribution and Water Service Materials" contained in the Iowa City Water Division Reference Manual. 2.2 DUCTILE- IRONPIPE: A. Pipe shall be AWWA C151, Class 52. B. Pipe is to have an exterior bituminous enamel coating and a standard cement mortar lining in accordance with AWWA C 104. C. Pipe suspended from structures and bolted or restrained joint pipe, unless otherwise indicated or specified, shall be class 53. 02660 -3 D. Pipe is to be complete with all necessary joint gaskets, lubricants, glands and bolts. 2.3 DUCTILE- IRONPIPEJOINTS: A. Single rubber- gasket push -on joints or mechanical joints shall conform to ANSUAWWA C111 /A21.11. Furnish with all necessary hardware and gaskets. B. Bell -and- spigot pipe joints shall conform to ANSI A21.6 or ANSI A21.8. C. For bolted /restrained mechanical joint, use Griffin Bolt -Lok restrained joint or approved equal, (Class 53). D. For unbolted/restrained mechanical joint, use Griffin Snap -Lok restrained joint or approved equal, (Class 53). E. Do not use drilled & tapped retainer glands. F. Plain end of push -on pipe factory machined to a true circle and chamfered to facilitate fitting gasket. 2.4 POLYVINYL CHLORIDE PIPE: A. Pipe shall conform to ANSUAWWA C900 and shall be thickness class DR 18 (Class 150). All pipe shall have the same outside dimensions as ductile -iron pipe. B. PVC pipe materials shall not be used in any area where there is likelihood the pipe will be exposed to concentrations of pollutants comprised of low molecular weight petroleum products or organic solvents or vapors. C. PVC pipe shall not be installed under public roadways and shall not be used around cut -de -sacs or other small radius curves. 2.5 FITTINGS: A. `" All fittings shall conform to ANSUAWWA C110/A21.10, with pressure rating of j Class, 350 for 3" to 24 ". B. Mechanical joint fittings shall be ductile iron compact ANSUAWWA C153/A21.53 or ductile standard ANSI /AWWA Cl 10 /A21.10. Large fittings, 12 -inch through 20- w inch shall be ductile iron standard ANSUAWWA CI IO/A21.10. Swivel tees shall be ductile iron standard ANSUAWWA C110.A21.10. Where ductile iron is not available (i.e., offsets), cast iron standard ANSUAWWA C110/A21.10 shall be provided. C. All fittings shall be bituminous coated inside and outside and shall be finnished complete with necessary accessories including plain rubber gaskets, ductile iron glands, NSS Cor -Blue bolts and nuts. Verify the gasket seats are not made irregular by improper application of the lining materials. 2.6 RESILIENT SEAT VALVES & VALVE BOXES: A. Gate valves shall conform to ANSUAWWA C509. Valves shall be full line size gate valves with epoxy coating inside and 02660 -4 outside and contain stainless steel nuts and bolts. 2. Valve bodies shall be ductile iron or cast iron. Working pressure of the valve shall be at least 200 psi. 3. Valves shall have a standard 2 -inch square operating nut and shall open left. 4. Valves shall be capable of being repacked or replacing o -rings under pressure. 5. Valves are to be non - rising stem with the stem, nut and thrust collar made of bonze. B. Butterfly valves shall conform to ANSUAWWA C504, for buried service, Class 150B. 1. Valve seat to be installed on disk or valve body. 2. Butterfly valves shall not be utilized in sizes smaller than, 16';'unless,so noted on the plans. 3. Working pressure of the valve shall be at least 150 psi. 4. Valves shall be short body pattern with mechanical joint ends. 5. Shaft seals shall be o -ring type. 6. Valve shall have manual operator with a 2" square operating nut for operation of the valve and shall open left. 7. All interior and exterior cast iron, ductile iron or steel surfaces shall be painted with an epoxy coating and contain stainless steel bolts and nuts. C. Tapping Valves shall be as specified for resilient- seated gate valves with the exception that one end shall be mechanical joint and the other end shall be flanged to match the tapping sleeve and shall have oversize seat rings to permit entry of the tapping machine cutters. I . Tapping valves be 175 psi minimum working pressure. 2. Valves shall be epoxy coated inside and outside with stainless steel nuts and bolts. 3. Valves shall be furnished with all joint accessories. D. Valve Boxes shall be 2 -piece or 3 -piece slip type, range 51" to 71 ". Use lids marked "water ". 2.7 HYDRANTS. Specification standard: ANSUAWWA Standard C502 Type of shutoff: Compression Type of construction: Break flange or break bolt above the ground line and a breakaway stem connection. All bolts to be stainless steel. Main valve opening: 4!/2 inches for 12" water main and under 5%a inches for 16" water main and above 02660 -5 Nozzle arrangement 3 nozzle, two 2 Y2-inch hose nozzles and one 4 Y2-inch and size pumper nozzle, with caps attached with chains Nozzle thread: National Standard Hose Threads Type of inlet connection: Mechanical Joint Size of inlet connection: 6 inch Depth of bury: Depth of bury shall be 6 feet Direction of opening: Open to right (clockwise) Packing: Conventional or O -Ring Size and shape of 1 %z inch, standard pentagon operating nut: Working pressure: 250 psi Color: Safety Red 2.8 SPECIAL FITTINGS. A. Special pipe fittings must be approved by the Engineer. B. Special fittings must be the same diameter, thickness and pressure class as standard fittings. C. Special fittings may be manufactured to meet requirements of same specifications as standard fittings except for laying length and types of end connection. D. :Full Body Tapping Sleeves: 1, -: Shall be mechanical joint, split construction with end gaskets, manufactured to fit cast iron or ductile iron pipe. Branch shall have a flange fitting to match the tapping valve. 2. Shall meet the OD requirements for Class A, B, C, or D pit cast pipe. 3. Shall be furnished complete with all accessories. 4. Required for 12" and larger pipe or under paving. 5. Shall have stainless steel or NSS Cor -Blue nuts and bolts. E. Stainless Steel Tapping Sleeves: 1. Shall be epoxy coated with ductile -iron flange and stainless steel bolts. 2. Shall meet the OD requirements for class A, B, C, or D pit cast pipe. 3. Shall be furnished complete with all accessories. 4. Nitrile gaskets shall be used in L.U.S.T. areas (leaking underground storage 02660 -6 tank areas). F. Stainless Steel Repair Clamps: 1. All stainless steel, single section, double section, or triple section, depending upon size of main. 2. Shall have stainless steel bolts and nuts. 2.9 GASKETS, BOLTS, NUTS, AND THREAD ROD: A. Mechanical joints made with: 1. Bolts: NSS Cor -Blue. " 2. Stainless steel bolt studs with SS nuts on each end. B. All tluead rod used to restrain fittings shall be stainless steel with SS nuts and 3/4" diameter. 2.10 LOCATION WIRE: A. Location wire #12 solid copper, THHN insulation in yellow, orange or blue color. 2.11 LUMBER: A. Lumber for bracing or supports shall be hardwood. (i.e. oak, maple). Do not use creosoted lumber in contact with piping materials. 2.12 WATER: A. Reasonable amounts of water will be provided for use in the final operations of water main flushing, disinfecting and testing. Prior notice must be given to the Water Division. B. Contractor will not be charged for the water used as long as there is reasonable care to control and conserve the rate and volume used. If there is waste or carelessness, Contractor will be charged for water. PART 3 EXECUTION 3.1 REFERENCESAND DOCUMENTS. A. Contractor must have all required documents on the site before commencing with the work. B. Valves, fittings, hydrants and ductile -iron pipe shall be installed in accordance with ANSUAW WA C600 except as noted herein. C. PVC pipe must be famished and installed in accordance with AWWA M23, ANSI /AWWA -C605 and Uni -Bell PVC Pipe Association UNI- B -3 -88 except as noted herein. D. Contractor must prepare and retain a set of "as- built' drawings on the job site with 02660 -7 accurate and current information on the location of all valves, pipe and special construction features. Examples of special buried features would be: I. Offsets in alignment. 2. Changes in depth, depth greater than 8 feet or less than 5 feet. 3. Special fittings or construction materials. 3.2 RECEIVING, STORAGEAND HANDLING: A. The City may mark materials which are found on the job site and which are determined to be defective or not approved. The marking may be done with spray paint. The Contractor shall promptly remove defective or unapproved materials from the site. B. While unloading PVC piping materials: 1. Do not allow the pipe units to strike anything. 2. Do not handle pipe units with individual chains or single cables, even if padded. 3. Do not attach cables to pipe unit frames or banding for lifting. C. Within the "Stor age" language of AW WA M23, change "should" to "shall." D.! Within the "Handling" language of AW WA M23, change "should" to "shall." 3.3 LOCATION ALIGNMENT, SEPARATION & GRADE: A. t . Water mains, valves, hydrants, and special fittings shall be installed in the locations shown on the plans or as directed by the Engineer. B. Contractor shall have all buried utilities located by the 1- 800 - ONE -CALL service and shall do exploratory excavation as necessary to determine specific conflicts between existing utilities and new water main. No extra compensation will be allowed for the exploratory excavations. C. Water main shall be installed a minimum depth of cover of 5%2 feet. Generally, the maximum depth shall not exceed 7 feet. D. Water mains crossing sewer services, storm sewers or sanitary sewers shall be laid to provide a separation of at least 18 inches between the bottom of the water main and the top of the sewer. Where local conditions prevent this vertical separation, the water main shall not be placed closer than 6 inches above a sewer or 18 inches below a sewer under any circumstances. Additionally, one firll length of water pipe crossing the sewer shall be centered at the point of crossing so that the water pipe joints will be equal distance as far as possible from the sewer. The water and sewer pipes must be adequately supported and have pressure tight joints. A low permeability soil shall be used for backfrll material within 10 feet of the point of crossing. 02660 -8 F. No water pipe shall pass through or come in contact with any part of a sewer manhole. A minimum horizontal separation of 3 feet shall be maintained. F. Sewer force mains and water mains shall be separated by a horizontal distance of at least 10 feet unless: the force main is constructed of water main materials meeting a minimum pressure rating of 150 psi and the requirements of Section 8.2 and 8.4 of the "Iowa Standards for Water Supply Distribution Systems" and 2. the sewer force main is laid at least 4 linear feet from the water main. G. Gravity sewer mains shall be separated from water mains by a horizontal distance of at least 10 feet unless: 1. the top of a sewer main is at least 18 inches below the bottom of the water main and 2. the sewer is placed in a separate trench or in the same trench orva bench' of undisturbed earth at a minimum horizontal separation of 3 feet from the water main. When it is impossible to obtain the required horizontal clearance of 3 feet and a vertical clearance of 18 inches between sewers and water mains, the sewers must be constructed of water main materials meeting both the minimum pressure rating of 150 psi and the requirements of Sections 8.2 and 8.4 of the "Iowa Standards for Water Supply Distribution Systems ". However, a linear separation of at least 2 feet shall be provided. H. Should physical conditions exist such that exceptions to Sections 3.3 Part F and 3.3 Part G of this standard are necessary, the design engineer must detail how the sewer and water main are to be engineered to provide protection equal to that required by these sections. Sewers constructed of standard sewer materials shall not be laid within 75 feet of a public well or 50 feet of a private well. Sewers constructed of water main materials may be laid within 75 feet of a public well and within 50 feet of a private well but no closer than 25 feet of either. J. All PVC water main and ductile iron water main with greater than 400 feet between features that extend to the surface (such as hydrants or valve boxes) shall be marked with a wire for the entire length to make electronic location possible. The wire shall be installed continuously as the pipe is backfilled. The wire shall be fixed to the side of the pipe at a position of 2 o'clock or 10 o'clock 02660 -9 and attached with duct tape every 5 feet. 2. The insulation shall be protected to prevent accidental grounding. Make few splices and splice the wire together using a Twister DB Plus Wire Connector. Bring the wire to the ground surface at each fire hydrant and loop wire in a Valvco tracer wire terminal box. These boxes shall be located between the hydrant and the hydrant valve with at least two feet of extra wire inside the box. Install the terminal box perpendicular from the hydrant and parallel with the valve box, one -foot from the hydrant base. The tracer wire terminal box must be installed flush with the finished grade. If there is no fire hydrant within 500 feet, bring the wire to the surface in a "daylight box" which is a full -size valve box (Tyler Series 6855 - Item 666A, Range 51" to 71" or East Jordan Series 8555 — Item 666A) and mark the drawings appropriately. 3.4 PIPE BEDDINGAND BACKFILLING. A. Ductile -iron pipe bedding shall conform to the project plan details or as otherwise specified or directed by the Engineer. B. PVC pipe bedding shall conform to UNI- B -3 -88 laying condition Type 2 including hand excavation for the bell holes. The bedding shall be loose, natural, fine soil which is compacted by hand tamping on the soil along the sides of the pipe to the top,of the pipe. C. Trench width within the pipe envelope shall conform to the plans or as directed by tyre Engineer. D. „ ; Set valves and hydrants on precast concrete bases. 3.5 PIPE RESTRAINT, A. Tluust Restraint: I. For pipe smaller than 10" diameter, concrete block shall be used, placing the concrete block next to the fitting and undisturbed soil. For 10" and lager diameter pipe, blocking shall be by cast -in -place concrete. Cover fittings and joints with 10 mil. polyethylene before placing concrete. Brace fittings with hardwood to prevent shifting before placing concrete. See Iowa City Reference Manual for detail information on thrust blocks — Figure 7.1. 2. Do not pour excess concrete on top of pipe and fittings. B. Socket Pipe Clamps, Tie Rods, and Bridles: I. Where indicated or necessary to prevent joints or sleeve couplings from pulling apart under pressure, provide suitable socket pipe clamps, tie rods, and bridles. Bridles and tie rod diameter shall be at least 3/4 in. except where they replace flange bolts of smaller size with nut on each side of flange. 02660 -10 C. Dead Ends 1. Pipe ends or fittings left for future connections shall be plugged or capped using materials supplied by the pipe manufacturer. 2. All pipe ends or fittings left for future connections shall be blocked against thrust. 3.6 JOINTSAND COUPLINGS. A. Push -on Joints: 1. Inspect bell grooves and clean to assure complete gasket seating. 2. Use extreme care to prevent separation of joints already installed. 3. Do not use push -on joints when boring. Griffin Snap -Lok shall be used�in casing with locking rubbers. B. Mechanical Joints: 1. The range of torque for tightening bolts which is indicated in ANSUAW WA C600 may be somewhat affected by the temperature. On cold days, mo&' ; torque may be required. 2. Use extreme caution when tightening cast iron fittings to avoid breaking the ears of the flanges. An average worker should not use a wrench longer than 18 inches. On PVC pipe connections to MJ joints, cut the bevel off the end of the PVC pipe to get full pipe diameter in thejoint. 4. Do not deflect pipe at joint. C. Sleeve -Type Coupling: 1. Clean pipe ends for distance of 12 inches. 2. Use soapy water as gasket lubricant. 3. Carefully mark and place the sleeve coupling in the center of the joint. 3.7 TAPPED CONNECTIONS UNDER PRESSURE. A. Follow manufacturer's installation instructions, B. Tapping mains for new connections 1 -inch to 12 -inch in diameter shall be done by the Water Division. This includes connections made on public and private mains. C. A new and site specific tapping application must be prepared for each tap regardless of size, and submitted to the Water Division. The tapping application must be completed and include location, name, and address of water customer, schematic drawing, and materials of construction. 02660 -11 3.8 POLYETHYLENE ENCASEMENT.• A. All open cut installed ductile iron pipe and fittings shall be wrapped with an 8 mil polyethylene encasement in accordance with ANSI /AWWA C105/A21.5 -99 installation methods. This includes any ductile iron laid in cul -de -sacs or other small radius areas where PVC main could not be used. 3.9 HYDRANT INSTALLATION: A. Handle carefiilly to avoid breakage and damage to flanges. Keep hydrants closed until they are installed. Protect stored hydrants from dill, water, ice, animals and vandals. B. Before installation, clean piping and elbow of any foreign matter. C. Install hydrants away from the curb line a sufficient distance to avoid damage from or to vehicles. A set -back of 4 feet from the curb line is recommended. Iowa Department of Transportation (IDOT) requires a 9' setback. D. Orient the hydrant so the pumper nozzle faces the street. Outlet nozzles shall be at least 18 inches above finished ground. The break -off flange should be no more than r 6 inches above ground. There shall be no obstructions to fire hose connections. E. The base elbow shall be placed on solid precast concrete blocks on firm, undisturbed soil. The barrel of the hydrant shall be firmly braced against the back of i the,trench wall with pre -cast cement blocks to resist thrust at the pipe connection. F. Tlie base and lower barrel shall be backfilled with 5 cubic feet of washed gravel or 1 inch crushed rock to allow water to release from the hydrant drain. G. Install the hydrant plumb. Drainage stone and soil backfill around the barrel shall be firmly compacted to provide good lateral support for the hydrant. This is essential to the performance of the break -off flange. 3.10 WATER MAIN OPERATIONS. A. All work which involves operating the active public water distribution system will require the notice, consent, approval and assistance of the Water Division. B. An accurate and legible copy of the "as- built" drawings must be on file in the Water Division office prior to using the water supply. C. If requested by the City, the contractor will work with Water Division personnel to submit a plan for initial operations and a plan for final operations to the Water Division for approval. The plans shall include a drawing and typed list of actions which show all the significant steps necessary to connect to the existing water distribution system or conduct the filling, flushing and testing operations. The purpose of both plans is to minimize the impact of service interruptions and pressure and flow variations on the water distribution system and existing customers. 02660 -12 3.11 DISINFECTION FOR POTABLE WATER SYSTEMS. A. General 1. Upon completion of a newly installed water main or when repairs to an existing water system are made, the main shall be disinfected according to instructions listed in ANSI/AW WA C651 and the following specifications. B. Special Disinfection Requirements 1. Exercise cleanliness during construction. Protect pipe interiors, fittings and valves against contamination. 2. The minimum uniform concentration of available chlorine used for disinfection shall be 50 mg/L. Use either the granulated /tablet br,continuous feed method with modifications as described in 3.11 C or D belovy. 3. The chlorinated water shall be retained in the main at least 24; hours, "during which time all valves and hydrants in the section treated shall'be operated in order to disinfect the appurtenances. At the end of this 24 hour period, the treated water shall contain no less than 25 mg/L chlorine throughout the length of main. 4. After the retention period, flush the heavily chlorinated water from the main until the chlorine concentration in the water leaving the main is no higher than 3 mg/L and the water appears clean. Flush at a minimum velocity of 2.5 feet per second in the main through an opening not less than '/a of the main diameter. For 6 -inch through 12 -inch water mains, a single 2%2 -inch fire hydrant opening is adequate. Water entering storm sewer system shall be dechlorinated by a method approved by the Engineer to prevent downstream environmental damage (i.e. fish kills). 5. After final flushing and before the new water main is connected to the distribution system, two consecutive sets of acceptable samples, taken at least 24 hours apart, shall be collected from the new main. At least one set of samples shall be collected from every 800 -1000 feet of the new water main. plus one set from the end of the line and at least one from each branch. Deliver the sample to the University Hygienic Laboratory at Oakdale for analysis. Allow approximately 5 days for the results. If the bacterial sample shows the absence of coliform organisms, the hydrostatic test may proceed. C. Tablet Method of Chlorine Application 1. Use ANSUAWWA C651, however slowly fill the main (less than 1 cubic foot per second) with system water, pushing out as much air as possible. Do not wash out the tablets. 02660 -13 D. Continuous Feed Method of Chlorine Application Prior to applying chlorine, do a preliminary flush at a minimum velocity of 2.5 feet per second in the main through an opening not less than not less than '/a of the main diameter. For 6 -inch through 12 -inch water mains, a single 2%: -inch fire hydrant opening is adequate. 2. Add the water and chlorine solution with the required concentration to fill the main completely. 3.12 TESTING. A. Filling the water main: Fill the newly constructed water main system slowly using treated public water under low pressure and low flow. The objective is to displace air with water while avoiding damage to new construction, customer set-vices, and adjoining property due to the release of air and water. Public Works staff must be on site to assist with operation of the system valves and hydrants during this operation. 2. Open one hydrant (completely) at the end of the main or at a high point on the main which is to be filled. Open a filling valve (the smallest one available) slightly. Allow the water main to fill and slowly release the air. When the main being filled has released nearly all air, surging should diminish and water released from the hydrant should flow in a steady stream. -- Monitor and control the released water to minimize damage. 3. ' After a few minutes of steady state operation, open all other valves slowly and then open the initial fill valve completely, while regulating the flow hydrant to minimize damage. When the main has been filled, open and close all hydrants sequentially to force fresh water progressively through each section (new and old) of water main which was shut down to replace fresh water into each section. After clear water and a fresh chlorine odor are observed at each hydrant, shut down hydrant flow slowly and allow water flow to cease and internal pressure to stabilize. For water main replacement only, each water service connection shall be tested at a sill cock and observed by the Contractor to verify adequate pressure and flow. B. Pressure and Leakage Tests: I. Conduct combined pressure and leakage test in accordance with ANSUAWWA C600 and ANSUAWWA C605. 2. Pressure test off the hydrants or ftuuish and install temporary testing plugs or caps. Furnish pressure pumps, pipe connections, meters, gauges, 02660 -14 equipment, potable water and labor. Use only potable water for testing. 3. Test after disinfection operations are successfully completed. If testing operations require reconstruction or repairs during which the interior of the pipe is exposed to contamination, disinfection will be required again. 4. Keep the water main full of water for 24 hours before conducting combined pressure and leakage test. Pressure and leakage test consists of first raising water pressure at the lowest point of section being tested to 150 psi internal pressure. 6. Failure to achieve and maintain the specified pressure for at least two hours with no additional pumping means the water main has failed to pass the test. 7. If the water main fails the pressure and leakage test, locate, uncover, and repair or replace defective pipe, fitting orjoints. Conduct additional tests and repairs until water main passes the test. c C. Valve Operations: 1. All valves shall be located and tested to verify operation. Remove the valve box lid, insert the valve key and open and close each valve. Count the turns and record the results. D. Hydrant Operations: After the hydrant has been installed and the main and hydrant have been pressure tested, each hydrant shall be flushed and checked for proper operation. 2. Remove a nozzle cap and open the hydrant slowly and fully. Check the direction of opening as marked on the top. Do not force the hydrant in the opening direction beyond full open as indicated by sudden resistance to turning. After hydrant has been flushed, close it and check for drainage. This is done by placing the hand over the nozzle opening and checking for a vacuum. Then check the hose thread for proper fit. 4. Replace nozzle cap, then open hydrant again and inspect all joints for leaks. E. Flow Test: Flow tests shall be conducted to verify all components of the water system are fully open and operational and to determine the fire flow capacity. 2. Public Works staff personnel must be on the site to operate the system valves and hydrants during this test. 02660 -IS A hydrant flow test may be conducted on the hydrant at the extreme locations for distance or highest elevation to determine the fire flow capability of the system. Static and flowing pressures and flow rates shall be recorded, and a copy forwarded to the Water Division. 6/12 5: \ENMCAD \WATER \Muscatine Ave - 2012 \Specs\02660_Water Dlstnbulion.doo 02660 -16 r_ 6/12 5: \ENMCAD \WATER \Muscatine Ave - 2012 \Specs\02660_Water Dlstnbulion.doo 02660 -16 SECTION 02665 WATER SERVICE WORK FOR CONTRACTORS PART 1 - GENERAL 1.01 DESCRIPTION.- A. Furnish and install new water services and yard hydrants as indicated and specified. 1.02 RELATED WORK: A. Section 02660: Water Distribution 1.03 REFERENCES: A. This specification references the following documents. In their latest edition, -the i'ef'erenccd., documents form a pail of this specification to the extent specified herein. B. City of Iowa City Water Division: 1. Policy and Procedures Manual. C. American National Standards Institute and American Water Works Combined Standards: ANSUAWWA -C800 Underground Service Line Valves and Fittings. D. American Society for Testing Materials: ASTM B75 -86 Seamless Copper Tubing. 1.04 SUBMITTALS: A. Submit to the Engineer the following drawings or details for approval 4 weeks prior to installation. 1. Sworn certificates of shop tests showing compliance with appropriate standard for all piping materials. 2. Working drawing or site plan with customer location, address, size, and materials of water service and main pipe including a fill list of materials required from the Iowa City Water Division, as applicable. 1.05 PERMITS: A. City of Iowa City: Contractor's superintendent on the job must have a license as a sewer and water service installer issued by the City to construct water and sewer mains and services in Iowa City. 02665 -1 2. The Contractor or their agent will be responsible for the tapping application forms and records. 1.06 TIME: A. Time is of the essence for water service work. All required work must be completed as quickly as possible to minimize inconvenience to the consumers. The Contractor is expected to comply with the minimum response and completion times listed. B. Amount of advance notice required to the Iowa City Water Division when materials or services are supplied by the Division are listed below. Serve notice to the Water Division at 356 -5160. For tapping service, provide 24 hours notice. Scheduling depends on workload. 2. For locations of underground facilities, provide 48 hours notice. C. Response Time - the maximum time allowed from telephone notice by the Engineer until the Contractor is on the job and ready to begin work: 1. For I service which is planned work, less than 24 -36 hours. 2. For I set-vice which is emergency work, less than 4 -6 hours. 3. For 3 or more set-vices which are planned work, less than 48 hours. D. Completion Time - the maximum time allowed from the time the Contractor turns off the water:until the water service is connected and operational under normal circumstances: 1:. For 1 service, where it is necessary to break and remove concrete with no prior warning or planning, less than 12 hours. 2. For 6 -8 set-vices or more in one block area with prior planning, some services on each side of the street and in conjunction with paving projects, less than a 12 -hour workday. 1.07 WORK ONPRIYATEPROPERTYFOR OTHERS: A. Water service work may be necessary or desired by private property owners at the same time as the new water service work under this contract is done. The Contractor will be allowed to work on private property adjacent to the work site in order to do water service work directly for the private property owner. Work on private property shall not adversely affect the time schedule for work under this contract. B. The work on private property will not be the responsibility of the City. 02665 -2 PART2- PRODUCTS 2.01 WATER SERVICE MATERIALS All products used for this work shall be from the list of "Accepted Products for Water Distribution and Water Service Materials" contained in the Iowa City Water Division Reference Manual. The manufacturer shall furnish a certificate indicating all new materials meet the specifications. All valves, fittings and pipe shall be inspected several times during the manufacturing process and pressure tested with air under water before shipment. All water service materials shall be visually inspected before installation. Brass and copper are soft metals and care in handling shall be exercised to avoid damaging threads or distorting piping, valves or fitting bodies. All water service lines will be furnished and installed by the Contractor. Material shall be new type K copper in coils for sizes 3/4 -inch through 1'h -inch and in coils or straight pipe for 2 -inch size. No couplings or connections will be permitted under the paving. A. SERVICE SADDLES: I. Service saddles shall meet or exceed current to ANSUAW WA C800/C900' tJ specifications and shall be made in accordance with ASTM 13-1 2' - 2. Saddles shall be equal to but not exceed up to 200 PSIG. 3. Body shall be 85 -5 -5 -5 cast brass. 4. Strap shall be wide band, 304L stainless steel with 304L stainless steel studs. 5. Nuts and washers shall be 304 stainless steel. Nuts are supplied with fluorocarbon coating. 6. Saddles shall be AW WA tap thread (CC thread). 7. Saddles with nitrile gaskets shall be used in L.U.S.T. areas (leaking underground storage tank areas). B. CORPORATION VALVES: 1. Corporation valves shall meet or exceed current ANSUAW WA C800 specifications and shall be made in accordance with ASTM B -62. 2. Valves shall be 300 PSIG maximum working pressure. 3. Body shall be 85 -5 -5 -5 cast brass. 4. Valves shall be inlet: AWWA taper thread, outlet: conductive compression connection for CTS O.D. tubing. 5. Valves shall be compression ball type valves. 02665 -3 C. BALL CURB VALVES: 1. Ball curb valves shall meet or exceed current ANSI/AW WA C800 specifications and shall be made in accordance with ASTM B -62. 2. Valves shall be 300 PSIF maximum working pressure. 3. Body shall be 85 -5 -5 -5 cast brass. 4. Valves shall be compression connection for CTS O.D. tubing, both ends. 5. Valve shall have a quarter turn check with fluorocarbon coated ball and stainless steel reinforced seat. 6. Valve shall have end pieces o -ring sealed with double o -ring seals. D. CURB BOX — ARCH PATTERN: Curb box shall meet or exceed current ANSI /AWWA C800 specifications. 2. Curb box lid shall be Erie Pattern — 5601 L — 2 -hole. 3. Curb box shall be 5 -foot box (telescope 1 -foot) and shall telescope up and down inside the base casting. Curb box shall be slide style. 5. Curb box and accessories shall be black dip coated inside and out. ca — 6. ,;'; Curb box rod length shall be a 5/8" rod, 42- inches long, small key -clamp welded to rod with stainless steel rod and cotter pin. E. STRAIGHT THREE PART UNIONS: 1. Unions shall meet or exceed current ANSUAWWA C800 specifications and shall be made in accordance with ASTM B -62. 2. Union shall be conductive compression connection for CTS O.D. tubing both ends. 3. Body and nut shall be corrosion resistant cast bronze 85- 5 -5 -5. 4. Gripper band shall be stainless steel and overlap itself so no gasket material can get underneath. 5. Conductor spring shall provide metal to metal contact between copper tubing and the fitting for electrical conductivity. 6. Entire gasket shall be enclosed. 7. Fluorocarbon coating shall be on inside surface of nut. 8. Union pressure rating shall be greater than the valve or fitting with which it is used. 02665 -4 F. COPPER TUBING: 1. Copper tubing shall meet or exceed current ANSUAW WA C800 specifications. G. YARD HYDRANTS: 1. Yard hydrants shall be freezeless style. PART 3- EXECUTION 3.01 RECORDSAND DOCUMENTS. A. Contractor must prepare and retain a set of "as- built" drawings on the job site with accurate and current information on the location of all water service valves, pipe and special construction features. Examples of special construction features include: Offsets in alignment. 2. Changes in depth and depth greater than 8 feet or less than 5 feet. 3. Special fittings or construction materials. Following completion of the project, a copy of these drawings shall bcSfiunislidd to -tire Water Division. 3.02 RECEIVING, STORAGE AND HANDLING: A. The Engineer may mark materials found on the job site which are determined to be defective or not approved. The marking may be done with spray paint, The Contractor shall promptly remove defective or unapproved materials from the site and replaced with new. 3.03 EXCAVATIONAND BACKFILL: A. All excavators shall comply with the requirements of the O.S.H.A Standards subpart P- Excavations. B. Earth excavation, backfill, fill and grading shall be in accordance with Section 02220. C. Excavation and backfill shall include all excavation, backfilling, compacting, stockpiling of surplus material on the site, and all other work incidental to the constriction of trenches, including any additional excavation which may be required for constriction of the water service lines. D. Along the proposed water service lines, the Contractor shall remove the surface materials only to such widths as will permit a hole or trench to be excavated, which will afford sufficient room for proper construction. Paving removals shall be as directed by the Engineer E. The Engineer shall approve removal limits. F. Where working space permits, holes or trenches may be excavated by machine, provided that by so doing, public and private improvements will not be subjected to an unreasonable amount of damage. The size of the hole shall be as small as reasonably possible to do the 02665 -5 work. If, however, excavation by machine methods cannot be made without damage being done to public and private improvements, hand excavation shall be employed. G. The Contractor shall use a mole for excavation of a hole to place the water service piping, %" to 2" diameter, at any location under a street surface, driveway, sidewalk or lawn area whenever the distance from the water main to the water service connection is greater than 20 feet. The mole shall be used even though the street surface has been removed so as to protect the new street surface from settlement. The mole shall be a maximum of four inches in diameter. The Contractor shall be responsible for all labor, equipment, materials and supervision for mole excavation. H. The Contractor shall be responsible for coordinating the location of all buried utilities and for all damage or repairs to utilities caused by mole excavation. Whenever, in the opinion of the Engineer, it is necessary to explore and excavate to determine the best line and grade for the construction of the new water service line or to locate an existing water service which must be disconnected, the Contractor shall make explorations and excavations for such purposes. J. All excavated material shall be piled in a manner that will not endanger the work and that will avoid obstructing sidewalks and driveways. Fire hydrants under pressure, valve pit covers, valve boxes, curb stop boxes, or other utility controls shall be left unobstructed and accessible until the work is completed. Gutters shall be kept clear and adequate provisions shall be made for street drainage. Natural watercourses shall not be obstructed. K. The Contractor shall provide and maintain ample means and devices with which to promptly remove and properly dispose of all water entering excavations or depressions until -all work has been completed. No sanitary sewer shall be used for disposal of water. L. To, protect persons from injury and to avoid property damage, adequate barricades, fencing, construction signs, caution lights and guards as required shall be placed and maintained by the Contractor at excavations during the progress of the construction work and until it is safe for pedestrian and vehicular traffic to use the roads, sidewalks and facilities. All material piles, equipment and pipe which may serve as obstructions shall be enclosed by fences or barricades and shall be protected by proper lights when the visibility is poor. The rules and regulations of O.S.H.A, and appropriate authorities for safety provisions shall be observed. M. Trees, shrubbery, fences, poles and all other property and structures shall be protected during construction operations unless their removal for purposes of construction is authorized by the Engineer. Any fences, poles, or other improvements which are removed or disturbed by the Contractor shall be restored to the original condition after construction is completed. Any trees, shrubbery or other vegetation which are approved for removal or ordered for removal by the Engineer shall be removed completely, including stumps and roots. The Contractor shall be responsible for any damage caused by construction operations to shrubbery or other landscape improvements which were not authorized for removal by the Engineer. 3.04 WATER SERVICE CONSTRUCTION.• A. Tapping mains for new connections 1 -inch to 12 -inch in diameter shall be done by the Water Division. This includes connections made on public and private mains. 02665 -6 B. The City Water Division will provide, at Contractor cost, labor to tap the water main for services. Each water service pipe shall be connected to the water main through a brass corporation stop. A tapping saddle is required on all water main materials. The plastic plug from PVC main shall be recovered. The main shall be tapped at an angle of forty -five degrees (450) with the vertical, if possible. The stop must be turned so that the T- handle will be on top. C. The old water service under the street right -of -way will be shut off and removed. The old stop box will be removed. D. The Contractor shall install the new copper service line from the new corporation stop to the new curb stop and from the curb stop to the customer service line near the property line. The size will be determined by the Water Division. The minimum size will be 1 -inch to the stop box. The service pipe shall be laid in the mole hole excavation and in the trench with sufficient weaving to allow not less than one foot extra length for each 50 feet of straight line distance. E. Underground water service pipe shall be laid not less than ten (10) feet horizontally from the building drain, and shall be separated by undisturbed or compacted earth. Where the horizontal separation cannot be met, the water service pipe shall be installed so tjre bottom of the water service pipe is at least eighteen (18) inches above the top of the building drain line at its highest point. F. A curb stop shall be furnished and installed for each service at the locabit -n shown on the plans, or as directed by the Engineer. Place a brick or masonry block widen each stop:bok valve. A cast iron stop box shall be furnished and installed over the curb stop and held in "a tiny vertical position, until sufficient backfill has been placed to ensure permanent vertical alignment of the box. The top of the box shall be adjusted and set flush with the finished surface grade. The stop box shall be located between the curb and the property line and visible from the sidewalk. If the stop box is located in the concrete (such as a driveway or sidewalk) a cement -style stop box lid must be used instead of the regular style lid. G. The Contractor shall make a clean cut on the existing service line and connect the new service line at the location as directed by the Engineer. H. The Contractor shall be responsible for visual inspection of all water service materials used in this work. If water pressure is available or will be available within 24 hours of making the new service connection, the new service shall be subjected to normal system pressure and visually inspected for leaks. If any leaks appear, the Contractor shall make repairs. Each water service shall be honed on and observed by the Contractor within the premises to verify adequate pressure and flow. 6/12 S:TNG \CAD \WATEMMuscatine Ave - 201ZSpecM02665_Water Service Work for Contraclors.doc 02665 -7 Department of Public Works Iowa City Water Division (Revised 3/9/2011) Accepted Products for Water Distribution Materials WATER PIPE: (Ductile) ANSUAWWA—A21.51/C151 American, Clow, Griffin, McWane, and US Pipe Class 52 for direct bury piping unless other wise indicated or specified. Class 53 for suspended from structures and bolted or restrained joint pipe WATER PIPE: ( PVC) (Class 150) — C900 C900 thickness class DR 18 (6" thru 10 ") ru uiwo: t"u"Il J uuu otnuua I", r I,OAIe Ty TV —n� A.A VIN 3" to 24" -350 psi (Ductile hron Compact) AW WA C153, 350 psi Clow, Tyler/Union, U.S. Pipe, or Sigma TAPPING SLEEVES: (Full Body Ductile Iron With Stainless Steel and /or Mueller - H615, Kennedy, Tyler/Union, American Flow Control - Series 2800, or U.S. Pipe ` T-9 "TAPPING SLEEVES: (Stainless Steep $mitlt$lait: -662 or 663, Ford FAST, Mueller -H304, Romac SST, JCM -432 'Smith Blair" =665 or Cascade CST -EX 3655 with nitrile gaskets to be used in L.U.S.T. areas MECHANICAL JOINT RESTRAINT DEVICE: (MeHalue — with NSS Cm• -Blue Nuts and Bolts) Ebaa Iron Sales Inc. — 1100 series for ductile iron 2000 PV for PVC STAINLESS STEEL REPAIR CLAMPS: (With Stainless Steel Nuts & Bolts) Smith -Blair -261, Ford FS1, Romac SS VALVES: (Resilient Seated Gate Valves) ANSI /AW WA — C509 Clow F -2640, Kennedy 8571 SS, Mueller Resilient Seat - A- 2360 -20, or U.S. Pipe - USPO -23- without accessories or USPO -20 -with accessories VALVES: (Butterfly) ANSUAWWA C504, Class 150B Clow, Pratt, Mueller, Kennedy, M & H, DeZurik or Val -Matic Accepted Products for Water Distribution Materials page 2 (Revised — 31912011 VALVES: (Tanaine) Clow —F -2640, Mueller —T- 2360 -16, Kennedy 8950 SS, U.S. Pipe —A- USPO -16 VALVE BOXES: Tyler — (Series 6855 & Item 666A, Range 51" to 71 ") East Jordan Series 8555 & Item 666A — Range 51" to 71" HYDRANTS N' /z" for 12" and under) (5' /a" for 16" and above) AWWA C502 Clow F -2545 Medallion, Mueller Super Centurion 250 SLEEVE TYPE COUPLING: (With Stainless Steel Nuts & Bolts) Standard solid black sleeve — Tyler/Union 5 -1442, Griffin Bolted Straight Coupling with stainless steel bolts and nuts — Smith -Blair 441 or,Romac' Style 501 TRACER WIRE TERMINAL BOX (DAYLIGHT BOX): U.S. Filter, WaterPro or Utility Equipment - Valvco —95E —2'/2" ID with lockable- cast-iron lid — minimum 18" long, telescoping TRACER WIRE CONNECTORS: Twister DB Plus Wire Connector POLY WRAP: 8 mil polyethylene encasement WIRE: 412 solid copper, THAN insulation in yellow, orange or blue FREEZE LESS YARD HYDRANT: Woodford Mfg. Iowa Model Y34 and YI (Revised 31912011) Page 3 Accepted Products for Water Service Parts SERVICE SADDLES: ANSI /AWWA— C800 /C900 AY McDonald 3845 Ford 202BS Smith Blair 325 with nitrite gasket to be used in L.U.S.T. areas CORPORATION VALVES: ANSI /AWWA C800 Mueller B- 25008, AY McDonald 4701BQ BALL CURB VALVES: ANSI /AWWA C800 Mueller B- 25209, AY McDonald 61000 CURB BOX ARCH PATTERN: ANSI /AWWA C800 — with stainless steel rod and eotter pin AY McDonald 5601 and 5603 with 5660SS -5' shut off rod fs' t _ SECTION 02700 SEWERS PART1- GENERAL 1.01 SUMMARY: A. Construction of piping and structures for the collection and transmission of wastewater and storm water. 1.02 REFERENCES: A. Reinforced Concrete Pipe - For Sanitary and Storm Sewers ASTM C76, latest edition, Standard Specification for Reinforced Concrete Culvert, Storm Drain and Sewer Pipe. 2. ASTM C443, latest edition, Standard Specification for Joints for Circular Concrete Culvert and Sewer Pipe, Using Rubber Gaskets. 3. ASTM C361, latest edition, Standard Specification for Reinforced' Concrete Lo+ Head Pressure Pipe. B. Manholes 1. ASTM C478, latest edition, Standard Specification for Precast Reinforced Concrete Manhole Sections. C. Intake Structures IDOT Standard Specifications. 2. Iowa Department of Transportation Highway Division "Standard Road Plans Manual ", latest edition. 1.03 QUALITYASSURANCE: A. All products will meet or exceed the minimum standards specified in the applicable references listed in the previous subsection. B. All suppliers of reinforced concrete pipe and manholes must be certified by the Iowa Department of Transportation. C. Reinforced concrete pipe sliall be manufactured by such means to minimize cage twist. Pipe displaying cage twist in excess of 30 degrees, as demonstrated by the form seam, will be rejected. D. Details of gasket installation and joint assembly are subject to acceptance by the Engineer. E. All materials judged to be of poor quality will be marked by the Engineer and promptly 02700 -1 removed from the site by the Contractor and replaced with new. All pipe must pass the leakage tests specified in Part 3 of this section. 1.04 SUBMITTALS. A. Concrete Pipe: Submit current Iowa Department of Transportation certification. B. Vitrified -Clay Pipe: Submit shop drawings of gasket installation and joint assembly. C. Shoring: Submit plans for all shoring, excluding trench boxes, certified by a professional engineer registered in the State of Iowa. This submittal will not be reviewed for structural adequacy by the City. PART 2- PRODUCTS 2.01 MATERIALS: A. Reinforced Concrete Pipe - For Sanitary and Storm Sewers Joints: All joints will be confined O -ring gasket meeting ASTM C443 or ASTM C361, as specified. All pipe 36 -inch diameter and smaller will have bell and spigot joints. Pipe larger than 36 -inch diameter may have tongue and groovejoints. 2. Wall Thickness: Minimum wall thickness will be B -wall as defined in ASTM C76 or Class C25 as defined in ASTM C361. 3, Pipe Strength: Pipe strength shall be as specified on the plans. If not specified, the ' minimum pipe strength shall be Class III as defined in ASTM C76 or as defined in ASTM C361. 4 Pipe Markings: All pipe shall be marked with the date of manufacture and ASTM class. If quadrant reinforcement is used, the top shall be marked on the outside of tine pipe. Lift holes are not allowed. 6. Minimum Bedding— Type B per ASTM C 12 with compacted granular material to the springline of the pipe, B. Reinforced Concrete Pipe - For Storm Sewers I. Joints a. Circular pipe: All joints will be confined O -ring or profile gasket meeting ASTM C443. All pipe 36 -inch diameter and smaller will have bell and spigot joints. Pipe larger than 36 -inch diameter may have tongue and groovejoints. b. Arch pipe: All joints will be sealed with mastic butyl rubber -based sealant meeting the requirements of AASHTO M198 -75, Type 'B ". Wrap exterior of each joint with engineering fabric. 2. Wall Thickness 02700 -2 a. Circular pipe: Minimum wall thickness will be B -wall as defined in ASTM C76. b. Arch pipe: Minimum wall thickness as defined for in ASTM C506. 3. Pipe Strength a. Circular pipe: Pipe strength shall be as specified on the plans. If not specified, the minimum pipe strength shall be Class III as defined in ASTM C76. b. Arch pipe: Pipe strength shall be as specified on the plans. If not specified, the minimum pipe strength shall be Class III A as defined in ASTM C506. 4. Pipe Markings: All pipe shall be marked with the date of manufacture and ASTM class. If quadrant reinforcement is used, the top shall be marked on the outside of the pipe. 5. Lift holes are not allowed. 6. Minimum Bedding — Type B per ASTM C 12 with compacted'grariulat• material to the springline of the pipe. C. Corrugated Plastic Pipe for Subsurface Drainage 1. Corrugated PVC with a smooth interior wall shall meet the standards of ASTM F949 and be constructed of resins meeting the requirements of ASTM D1784, cell class 12454B. 2. Corrugated HDPE with a smooth interior wall shall meet the standards of AASHTO M -252 and M -294. 3, Minimum Bedding — Drainable stone encasement to 6" above pipe. D. Manholes Joints: All joints will be confined O -ring or profile gasket meeting ASTM C443. 2. No lift holes through the entire wall. 3. Mark date of manufacture. 4. Inverts: Precast and cast -in -place inverts must provide a channel at least one -half the depth of the pipe and match the fill cross - sectional area of the pipe. All junctions and changes in directions of inverts shall be smooth and rounded to the maximum extent possible to supplement flow through the manholes. 5. All manholes are 4 -foot diameter unless noted otherwise. 6. Manhole frame and lid to be Neenah R -1670, self - sealing, East Jordan 1117, self - sealing or approved equal. If in paved area, casting shall also be non- rocking. 02700 -3 7. Manholes in paving shall have an interior Cretex chimney seal (or approved equal) that spans from the casting to the cone section. E. Bedding: Granular bedding material shall consist of porous backfill material, MOT Standard Specification Section 4131 and Section 4109, Gradation No. 29. PART 3 - EXECUTION 3.01 INSTALLATION OF PIPE: A. Inspect before installation. Remove and replace defective sections. B. Alignment and Grade I. Install to line and grade indicated on plans using laser and check elevation as required to maintain grade. 2. Driving down to grade by striking or with excessive force from excavating equipment is not allowed. 3. Blocking the pipe to grade with wood, stones or other materials is not allowed. C. Bedding I : Support on compacted granular bedding material using the type of bedding specified on the plans. If no bedding is specified, use the minimum bedding specified in Part 2 of these specifications. 2. Place bedding material to ensure that there are no voids under or alongside the length of the pipe. Slice with shovel to remove voids. Compact with pneumatic equipment. 3. Hand shape bell holes so that only pipe barrel receives bearing pressure. D. Connections I. A -LOK shall be used for all sanitary sewer connections to manholes unless approved by the Engineer. 2. Subdrains shall be connected to storm sewer intakes and manholes using IDOT standard intake outlet detail RF -19C. CMP outlet shall be used unless approved by the Engineer. E. Jointing I . Clean and lubricate all joints prior to assembly. 2. Join per manufacturei's recommendations. 02700 -4 3.02 3. Suitable couplings shall be used forjointing dissimilar materials. F. Backfill as specified in Section 02220. G. Clean pipeline upon completion. H. Tolerances Any deviation in a sewer pipes section more than 1/8 inch per foot of pipe diameter from the horizontal or vertical alignment, as established by the Engineer, will not be allowed; and all sewer laid incorrectly, as determined by the Engineer, must be relaid at the Contractor's expense. This tolerance in grade will be allowed only if the sewer is designed at a slope sufficient to prevent backfall when its limits are reached. Under no condition will a sewer be accepted when one or more pipe lengths have been installed without "fall ". 2. The completed sewer must be laid so nearly in a perfect line that an ordinary electric lantern held at center of the sewer at a manhole may be wholly visible to the eye at the level of the sewer at the next manhole. 3. Sags and reverse slope on gravity pipe is prohibited. Remove and relay pipe to proper grade. TESTING OF PIPE: A. Lamp all pipe to visually inspect for defects and debris. B. Leakage Tests: Perform leakage tests on all sanitary sewers as follows:,'. 1. Perform after completion of back611. 2. Perform after groundwater has returned to normal level. 3. Furnish test plugs, water pumps, appurtenances, and labor. Install bulkheads for testing and weirs for measurement as necessary. Groundwater elevation from observation wells or excavations are subject to acceptance by the Engineer. a. If groundwater is more than two foot above top of pipe at upper end, conduct infiltration or low- pressure air tests. If maximum pressure exerted by groundwater is greater than 4 psig, conduct infiltration test. b. If groundwater is less than two foot above top of pipe at upper end, conduct exfiltration or low- pressure air tests. C. If pipe is larger than 27 -inch, air test is not allowed. 4. Exfiltration or infiltration test performed on sections of approved length (maximum %2 -mile for sewers) and before connection to buildings. Low - pressure air tests performed on manhole -to- manhole sections of pipeline. 5. Low - pressure air test: a. Equipment 02700 -5 (1) Designed for testing sewers using low- pressure air. (2) Provide air regulator or safety valve so air pressure does not exceed 8 psig. (3) All air through single control panel. b. Procedure (1) Perform from manhole -to- manhole after backfill. (2) Place pneumatic plugs: (a) sealing length: equal to or greater than pipe diameter, (b) capable of resisting internal test pressure without external bracing or blocking. (3) Introduce low- pressure air into sealed line and achieve internal air pressure 4 psig greater than maximum pressure exerted by groundwater above pipe invert. (4) Limit internal pressure in sealed line below 8 psig. (5) Allow two minutes minimum for air pressure to stabilize. Disconnect low- pressure air hose from control panel. (6) Acceptable Test Result: (a) Minimum time for pressure to drop from 3.5 to 2.5 psig greater than maximum pressure exerted by ground water above pipe invert. Pipe diameter Time in in inches Minutes 4 2.0 6 3.0 8 4.0 10 5.0 12 5.5 15 7.5 18 8.5 21 10.0 24 11.5 27 13.0 (b) Minimum allowable time for sewers with more than one size of pipe: based on largest diameter reduced by 0.5 min. (c) If groundwater level at time of testing is above the sewer, air pressure shall be increased 0.43 psig for each foot the groundwater is above the flow line of the pipe. 02700 -6 C. If pressure drop exceeds 1.0 psig during the test period, the test shall be considered to have failed. Locate and repair leaks and retest as required. 6. Infiltration Test a. Dewater and conduct test for at least 24 homy. b. Locate and repair leaks, and retest as required. C. Allowable infiltration, including manholes, fittings, and connections: maximum 200 gallons per inch diameter per mile per 24 hours. Exfiltration Test a. Subject sewers to internal pressure by: (1) plugging the inlet of the upstream and downstream manholes, (2) filling sewer and upstream manhole with clean water until the water elevation in the manhole is two feet above top of sewer, or two feet above the existing ground water in the trench, whichever is the higher elevation. b. Use suitable ties, braces, and wedges to secure stoppers against leakage from test pressure, where conditions between manholes may result in test pressure causing leakage. C. Rate of leakage from sewer: Determined by the amount of water required to maintain the initial water elevation for one hour from the stem of the test. -' d. Allowable exfilhation same as allowable infiltration. If-the ave[3ge head above the section being tested exceeds two feet above top of pipe then the allowable exfiltration can be increased by 5% for each a0ditional foot of head. e. Modification to this test only as approved by the Engineer. f. Locate and repair leaks and retest as required. C. Deflection Tests: Perform deflection tests on all PVC Muss sewers as follows: The mandrel (go /no -go) device shall be cylindrical in shape and constructed with nine (9) evenly spaced arms or prongs. The mandrel dimension shall be 95% of the flexible pipe's published ASTM average inside diameter. Allowances for pipe wall thickness or ovality (from shipment, heat, shipping loads, poor production, etc.) shall not be deducted from the ASTM average inside diameter, but shall be counted as part of the 5% allowance. The contact length of the mandrel's arms shall equal or exceed the nominal diameter of the sewer to be inspected. Critical mandrel dimensions shall carry a tolerance oft ,001 ". Proving rings shall be available. 2. The mandrel inspection shall be conducted no earlier than 30 days after reaching final trench backfill grade provided, in the opinion of the Engineer, sufficient water densification or rainfall has occurred to thoroughly settle the soil throughout the entire trench depth. Short -term (tested 30 days after installation) deflection shall 02700 -7 not exceed 5% of the pipe's average inside diameter. The mandrel shall be hand pulled by the Contractor through all sewer lines. Any sections of the sewer not passing the mandrel test shall be uncovered and the Contractor shall replace and recompact the embedment backfill material to the satisfaction of the Engineer. These repaired sections shall be retested with the go /no -go mandrel until passing. 3. The Engineer shall be responsible for approving the mandrel. Proving rings may be used to assist in this. Drawings of the mandrel with complete dimensioning shall be furnished by the Contractor to the Engineer for each diameter and type of flexible pipe. 3.03 CONSTRUCTION AND INSTALLATION OF MANHOLES, MANHOLE BOXES AND INTAKE STRUCTURES. A. Set bases true to line and elevation on minimum six -inch granular backfill material. B. Install O -ring or profile gasket in joints between sections conforming to manufacturer's standard. C. Cast in place inverts must provide a channel at least one -half the depth of the pipe and match the fill cross- sectional area of the pipe. All junctions and changes in direction shall be smooth and rounded to the maximum extent possible to supplement flow through the stricture. D.; Plug holes for handling with mortar. 7 a E. Lay grading rings in full bed and joint of mortar without subsequent grouting, flushing or c filling; bond thoroughly. E F. Set -frames with top conforming to finished ground or pavement surface as indicated and ` — directed. Grading rings plus the frame height shall not exceed 24 inches. G. Set frames in full bed of RAM -NEK or equal to fill and make watertight space between masonry top and bottom flange of frame. H. Backfill as specified in Section 02220. I. Clean manhole upon completion. J. Inspect for visible leaks after groundwater has returned to normal level. Repair leaks. 3.04 MAINTENANCEOFFLOW.• A. Storm Sewers: At the end of each working day, the Contractor shall reestablish the full capacity of any drainage system affected by construction. Diversion of storm water into the sanitary sewer system is not allowed. B. Sanitary Sewers: The Contactor shall at all times maintain full capacity in the sanitary sewer system and protect the system from storm water. C. If pumps are used for the diversion of flow, the Contractor shall have a stand -by pump readily at hand. The Contractor shall provide the Police Department and the Supervisor of the Iowa City Wastewater Treatment Plant with phone numbers where the responsible 02700 -8 person may be reached 24 hours a day to make immediate repairs and/or replacement in case of diversion system failure. Diversion of sanitary sewage to storm sewers or waterways is not allowed. 3.05 CONFLICTS A. Provide temporary support for existing water, gas, telephone, power or other utilities or services that cross the trench. B. Compact backfill under the existing utility crossing as specified in Section 02200. C. Separate gravity sewers from water mains by horizontal distance of at least 10 feet unless: 1. Top of sewer is at least 18 inches below the bottom of the water main. 2. Sewer is placed in separate trench or in same trench on bench of undisturbed earth with at least three feet separation form the water main. D. Use water main materials for gravity sewers with less than 10 feet of horizontal distance and top of the sewer less than 18 inches below the bottom of the water main; maintain a linear separation of at least two feet. E. Where gravity sewer crosses over water main or service or where the tqp of server is less than 18 inches below the bottom of the water main or service, the fotlowing r quirements shall apply: 1. The sewer may not be placed closer than 6 inches below a water.inain or 18 inches above a water main. The separation distance shall be the maximum feasible in all cases. — 2. Use 20 -foot length of water main material as specified for gravity sewer centered on the water main. Bothjoints shall be located as far from the water main as possible. 3. The sewer and the water main must be adequately supported and have watertightjoints. 4. Backfill trench with low permeability soil for the 20 -foot length centered on the crossing. F. Sanitary sewer force mains and water mains shall be separated by a horizontal distance of at least 10 feet unless: 1. The force main is constructed of water main material meeting a minimum pressure rating of 200 psi. 2. The force main is laid at least four linear feet from the water main. 06/03 sharedknginccNpm- ifl02700.dm 02700 -9 SECTION 02751 DIRECTIONAL BORING AND DRILLING PART1- GENERAL 1.01 SUMMARY.• A. Furnish labor, materials, tools and equipment to install carrier pipe by directional boring and drilling. B. This specification covers thrust- restrained Polyvinyl Chloride (PVC) Pipe. Pipe is intended for use in pressure - related potable water delivery systems. C. Pipe material including carrier pipe and fittings will be provided by the City of Iowa City. D. Boring pits will be excavated and backfilled by the City of Iowa City. ` 1.02 REFERENCES: A. American Society for Testing and Materials (ASTM) 1. ASTM D1784 Standard Specification for Rigid PVC Compounds and Chlorinated PVC Compounds 2. ASTM D2837 Standard Test Method for Obtaining Hydrostatic Design Basis for Thermoplastic Pipe Materials 3. ASTM D3139 Standard Specification for Joints for Plastic Pressure Pipes Using Flexible Elastomeric Seals 4. ASTM F477 Standard Specification for Elastomeric Seals (Gaskets) for Jointing Plastic Pipe B. American Water Works Association (AWWA) AWWA C900: Polyvinyl Chloride (PVC) Pressure Pipe, 4 inch through 12 inch, for Water 2. AWWA C906 -99: Polyethylene (PE) Pressure Pipe and Fittings, 4 inch through 63 inch, for Water Distribution and Transmission C. American Railway Engineering Association "Specifications for Pipelines Conveying Non - Flammable Substances," latest edition D. Iowa Department of Transportation ([DOT) Standard Specifications, latest edition 1.03 SUBMITIALS: 02751 -1 A. Carrier Pipe Materials: To be provided by the City of Iowa City Water Division B. Boring Pit: To be provided by the City of Iowa City Water Division C. When boring is complete, contractor shall provide Engineer with a plan and profile of the bore path. D. Record and submit notes of actual boring operations with field load conditions. 1.04 QUALITYASSURANCE: A. Only workers experienced in boring and jacking operations shall be used to perform the work. Statement of qualifications shall be submitted and approved by the Engineer prior to the start of work. B. Provide efficient, useful monitoring devices on the equipment so the operator and Engineer can compare the field conditions with the design and effectively monitor the loads on the pipe as it is being installed. C. "' Engineer will survey and record top of pavement elevations before and after boring operations as necessary. PART 2- PRODUCTS 2.01 - CARRIER -PIPE MATERIALS: A PVC pipe for directional boring shall be C900/RJ. PVC restrained joint pipe (Certa -lok) from CertalnTeed Corporation will be supplied by the City of Iowa City Water Division. PART 3 — EXECUTION 3.01 PROTECTION OF UNDERGROUND FACILITIES: A. City of Iowa City will locate underground facilities via potholing at critical locations. B. Contactor is responsible for modifying boring operations to prevent damage to existing facilities. 3.02 DIRECTIONAL BORING EQUIPMENT.- A. The drilling equipment shall be capable of placing the pipe as shown on the plans. The installation shall be by a steerable drilling tool capable of installing continuous runs of pipe without intermediate pits, a minimum distance of 400 feet. B. The directional boring machine shall be supplied with an output signal inside the housing of the drill bit. The output signal shall have a constant output signal to allow a person to track the location of the beacon at all times. C. The drilling machine shall be equipped with a drilling fluid compatible for the onsite conditions. 02751 -2 D. The directional head shall be capable of accepting a variety of cutting bits for varied soil conditions. 3.03 CONTROL OF LINE AND GRADE. A. Engineer will provide control surveying and grade stakes as necessary. Engineer will survey and record top of pavement or rail elevations before and after boring operations as necessary. B. During the installation of carrier pipes, the Contractor shall be responsible for monitoring alignment and elevation of said pipes. The Contractor shall provide control points, reference marks and equipment for this purpose. The drill bit shall be located a maximum of every 5 feet. The operator of the drilling unit shall check the bore path and position of boring pit at every five feet and make necessary correction to stay along the alignment. C. Allowable deviations from the plan alignment and elevation are as follows: The guidance system shall be capable of installing pie within 1 -1/2 inch of the plan vertical dimensions and 2 inches of the plan horizontal dimensions. 2. In addition, care shall be taken to assure that continuous positive or negative grads, as shown on the plans, are maintained in the installed carrier pipe. 3. The Contractor shall be required to remove and reinstall pipes which vary; in depth and alignment from these tolerances. 3.04 PILOT HOLE INSTALLATIONS. A. The pilot hole shall be drilled along the path shown on the project plans' B. At the completion of the pilot hole drilling, the Contractor shall provide a tabulation of coordinates, including elevation data, referenced to the drilled point entry, which accurately describe the location of the pilot hole. C. Pilot hole alignment shall be accepted and approved by the Engineer prior to reaming and pipe installation. 3.05 REAM and PULL BACK OPERATIONS, A. Reaming shall be sufficient to prevent damage to pipe or pipe crossing. B. The maximum allowable tensile load imposed on the pipeline pull section shall not exceed 90% of the product of the Specific Minimum Yield Strength of the pipe and the area of the pipe section, or as specified by the pipe manufacturer. C. A swivel shall be used to connect the pipeline pull section to the reaming assembly to minimize torsional stress imposed on the section. D. The pipeline pull section shall be supported as it proceeds during pull back so that it moves freely and the pie and pipe coating are not damaged. E. The pipeline pull section shall be installed in the ream hole in such a manner that external 02751 -3 pressures are minimized. F. In case of a pull back where the bore hole will be abandoned or where voids are created, the Contractor shall fill voids with grout injected under pressure using approved methods. 3.06 DIRECTIONAL BORING OPERATIONS: A. The drilling machine shall be set up at such a location to avoid disruption of private yard and landscaping. B. Pipes shall be joined before being subjected to the boring process, or after they have reached final position, depending on the type of pipe and nature of the joint and jointing material. C. The method of boring, in each case, shall be in accordance with the requirements of the governing agency. D. Once boring has been started, it shall be continuous until completion of the boring operations in order to reduce the possibility of a so- called "stuck" pipe and to minimize the creep of the soil into the face, even though this may involve working outside the normal working days. The Contractor shall not be entitled to additional compensation for effort required to maintain continuous boring operations. The Engineer reserves the right to waive the requirement for continuous boring if such waiver is approved by the appropriate goN eerning agency. E. ti . shall be taken during boring operations to ensure that the pipe remains true to line and _ grade: F. No open cut within boring limits shown on the plans shall be permitted without written authorization of the Engineer and the governing agency. G. Pull back forces shall not exceed the allowable pulling forces for the pipe being installed H. The chilling fluid, such as bentonite, shall be used for lubricating the pipe during pull -back, forcing spoils out of the pipe pit, assisting in holding the hole open during pull back, and hardening into a clay substance around the outside of the conduit, preventing settlement of the ground. Adequate drilling fluids shall be used to avoid a "hydra- lock" condition. Disposal of excess fluid and spoils shall be the responsibility of the Contractor, Any damage to property, landscaping or trees caused by Contracot's operation shall be replaced to the Owner's satisfaction and at no additional cost to the Owner. The Contractor shall make necessary provisions to keep water and soil out of the installed piping systems. K. Obstructions to the progress of the pipe, such as roots, boulders or portions of former structures, shall be removed and deviations from line and grade shall be avoided if such deviation will result in ill -fitting joints. The use of explosives for removing obstructions is prohibited. 02751 -4 3.07 RESTRAINED JOINTPVCPIPEASSEMBLYANDINSTALLATION: A. Follow manufacture's instructions and recommendations for assembly and installation. B. Prevent dirt from getting into the couplings and, especially, the gasket grooves. If dirt does get into the gasket grooves, the gaskets must be removed and cleaned, and the grooves must be cleaned, and the gaskets then reinserted before they can be installed into the pipes. C. When pulling in restrained joint PVC pipe, do not exceed the maximum recommended pulling or bending limits for the pipe. When the pull -in is complete, apply pushing forces to each end of the pipeline to relieve any stretch that may be remaining. 3.08 CARRIER PIPE INSTALLATION A. The carrier pipes shall be the class, type and size as indicated on the plans and specified herein. This will be supplied by the City of Iowa City Water Division. B. If the plans call for the carrier pipe to be installed without a casing pipe, the requirements for installation of casing pipe as detailed herein shall apply. This shall include filling of voids between undisturbed embankment and outside of pipe with specified grout. 3.09 SEALING: A. After installation of carrier pipes within casing pipes, the Contractor shall s6af ends of casing pipes with weak concrete bulkheads a minimum of one -foot thick' or manufactured end seals as indicated. 3.10 TESTING: A. Testing procedures for carrier pipe shall follow those outlined in Sections 02660 — Water Distribution. END OF SECTION 06/06 shared \engineeftspecs- iA0275 Ldoc 02751 -5 SECTION 02900 LANDSCAPING PART1- GENERAL 1.01 SUMMARY: A. Plantings (trees, shrubs, seed and sod), including soil preparation, finish grading, landscape accessories and maintenance. 1.02 QUALITYASSURANCE: A. The fitness of all plantings shall be determined by the Engineer and /or the City Forester with the following requirements: Nomenclature: Scientific and common names shall be in conformity with U.S.D.A. listings and those of established nursery supplies. 2. Standards: All trees must conform to the standards established by the American Association of Nurserymen. B. The Contractor shall repair or replace all plantings which, in the judgment-of tft6 Engineer and /or City Forester, have not survived and grown in a satisfactory manner for,4 period 6f one year after City Council acceptance of the project. 1.03 SUBMITTALS: A. Certify that all plantings are free of disease and insect pests. Certificates shall 60 submitted to the Engineer and /or City Forester. B. Submit certification of seed mixtures, purity, germinating value, and crop year identification to the Engineer. 1.04 DELIVERY, STORAGE AND HANDLING: A. Protect all plantings in transit to site to prevent wind burning of foliage. B. Set all balled and burlapped trees and shrubs, which cannot be planted immediately, on ground and protect with soil, wet peat moss or other acceptable material, and water as required by weather conditions. C. Keep container grown trees and shrubs, which cannot be planted immediately, moist by adequate watering. Water before planting. 02900 -1 PART2- PRODUCTS 2.01 TREES AND SHRUBS: A. Trees and shrubs shall be vigorous, healthy, well - formed, with dense, fibrous and large root systems and free of insect or mechanical damage. B. All trees and shrubs, except those specified as container grown, shall be balled in burlap with root ball formed of firm earth from original and undisturbed soil. At a minimum, 80% of all plantable containers shall be removed during planting, C. All trees shall display the following form and branching habits: I . Free of branches to a point at 50% of their height. 2. Contain a minimum of six (6) well placed branches, not including the leader. D. Trees shall be measured when branches are in their normal position. Caliper measurement shall be taken at a point on the trunk six inches (6 ") above ground. E.`;' Trees which have no leader or have a damaged or crooked leader, or multiple leaders, unless specified, will be rejected. Trees shall be freshly dug. 2.02= ' SEED: w Minimum Proportion Lbs./ Lbs./ Mix by Weight Acre 1,000 sq.ft. URBAN MIX* Kentucky B ie Grass 70% 122.0 2.80 Perennial Rygrass (fine leaf variety) 10% 18.0 0.40 Creeping Red Fescue 20% 35.0 0.80 RURAL MIX* Kentucky 31 Fescue 54% 25 0.57 Switchgrass (Black Well) 17% 8 0.18 Alfalfa (Northern Grown) 11% 5 0.11 Birdsfoot Trefoil (Empire) 9% 4 0.09 Alsike Clover 9% 4 0.09 *A commercial mix may be used upon approval of the Engineer if it contains a high percentage of similar grasses. 2.03 SOD: A. Grass and sod established, nursery grown Kentucky or Merion Bluegrass sod, vigorous, well rooted, healthy turf, free from disease, insect pests, weeds and other grasses, stones, and any other harmful or deleterious matter. B. Sod harvested by machine at uniform soil thickness of approximately one inch but not less than 3/4 of an inch. Measurement for thickness excludes top growth and thatch. Prevent tearing, breaking, drying or any other damage. 02900 -2 2.04 LIME AND FERTILIZER; A. Ground agriculture limestone containing not less than 85 percent of total carbonates. B. Fertilizer shall contain the following percentages by weight or as approved by Engineer: Nitrogen* - 15% Phosphorus - 15% Potash - 15% *At least 50 percent of nitrogen derived from natural organic sources of ureaform. PART 3 - EXECUTION 3.01 PLANTING TREES AND SHRUBS; n B. C. D. E. F Planting Season and Completion Date: Trees: Spring— March 30 through May 15 Fall — Sept. 18 through Nov. 18 The Contractor may plant outside the limits of such dates with permission of the City Forester. The City Forester may stop or postpone planting during these dates if weather conditions are such that plant materials may be adversely affected. The planting shall be performed by personnel familiar with the accepted procedures of planting and under the constant supervision of a qualified planting supervisor. Tree and shrub placement shall be as shown on the plans. Contractor shall inform the City Forester of the starting date and location. All planting soil must be approved by the City Forester before use. Excavate with vertical sides and in accordance with following requirements: Excavate tree pits to a minimum of two feet greater in diameter than root ball of tree and sufficiently deep to allow for a minimum of 6 inches of planting soil mixture below root ball. Plant shrubs in pits 12 inches greater in width than diameter of root ball or container and sufficiently deep to allow for a minimum of 6 inches of planting soil mixture below root ball. 3. Do not use auger to excavate planting pits. Set trees and shrubs in center of pits, align with planting plan, plumb and straight and at elevation where top of root ball is one inch lower than surrounding finished grade after settlement. G. Compact topsoil mixture thoroughly around base of root ball to fill all voids. Cut all burlap and lacing and remove from top one -third of root ball. Do not pull burlap from under any root ball. Backfill tree and shrub pits halfway with planting soil mixture and thoroughly puddle before further backfilling tree or shrub pit. Water tree or shrub again when backfill operation is complete. 02900 -3 H. Rake bed area smooth and neat. Mulch all tree pits and shrub beds with a minimum of three inches of hardwood mulch which has been approved by the City Forester. 3.02 PLANTING SOIL MIXTURE. A. Backfill material for plantings shall be a mixture of 2/3 loose fi-iable topsoil and 1/3 clean sand. All backfill shall have a uniform appearance and shall be loose, friable, and free of hard clods and rock over two inches in diameter. 3.03 SEED, FERTILIZE, LIME AND MULCH: A. Apply lime by mechanical means at rate of 3,000 pounds per acre. B. Apply fertilizer at rate of 450 pounds per acre. C. Seed Areas: I. Remove weeds or replace loam and reestablish finish grades if any delays in seeding lawn areas allow weeds to grow on surface or loam is washed out prior to sowing seed. This work will be at the Contractor's expense. 2. Sow seed at rate of 175 pounds per acre on calm day, by mechanical means. Sow one -half of seed in one direction, and other one -half at right angles to original direction. " 3. ' ' Rake seed lightly into loam to depth of not more than '/4 -inch and compact by means of an acceptable lawn roller weighing 100 to 150 pounds per linear foot of Width. 4. Hydro - seeding may be used upon approval of the Engineer. D. Water lawn area adequately at time of sowing and daily thereafter with fine spray until germination, and continue as necessary throughout maintenance and protection period. E. Seed during approximate time periods of April I to May 15 and August 15 to September 15, and only when weather and soil conditions are suitable for such work, unless otherwise directed by the Engineer. F. All areas requiring mulch shall be mulched as soon as seed is sown and final rolling is completed. Mulch shall be evenly and uniformly distributed and anchored into the soil. The application rate for reasonably dry material shall be approximately 1' /z tons of dry cereal straw, two tons of wood excelsior, or two tons of prairie hay per acre, or other approved material, depending on the type of material furnished. All accessible nmlched areas shall be consolidated by tilling with a mulch stabilizer, and slope areas shall be tilled on the contour. Crawler -type or dual -wheel tractors shall be used for the mulching operation. Equipment shall be operated in a manner to minimize displacement of the soil and disturbance of the design cross section. G. Apply additional care as necessary to ensure a hearty stand of grass at the end of the one - year maintenance period. 3.04 SOD, A. Install sod not more than 48 hours after cutting. Stake all sod as necessary to prevent erosion before establishment. B. Apply lime by mechanical means at a rate of 3,000 pounds per acre. 02900 -4 C. Apply fertilizer at a rate of 450 pound per acre. D. Remove weeds or replace loam and reestablish finish grades if there are any delays in sodding. E. Rake area to be sodded. F. Roll sod to establish smooth, uniform surface. G. Water area adequately at time of sodding and continue as necessary throughout maintenance period. H. Sod during approximate time periods of April t to May 15 and August 15 to October 15, and only when weather and soil conditions are suitable for such work, unless otherwise directed by the Engineer. Apply additional care as necessary to ensure a hearty stand of grass at the end of the one - year maintenance period. 3.05 MAINTENANCE -ALL PLANTINGS. A. Begin maintenance immediately and continue maintenance until final acceptance of work. Water, mulch, weed, prune, spray, fertilize, cultivate and otherwise maintain and protect all plantings. G B. Maintain sod and seed areas at maximum height of 2'h inches by mowing at least three times. Weed thoroughly once and maintain until time of final acceptance. Reseed and refertilize with original mixtures, watering, or whatever is necessary to :establish, over entire area, a close stand of grasses specified, and reasonably free of weds and'tindesirable grasses, C. Reset settled trees and shrubs to proper grade and position, and remove dead material. D. All plantings shall be guaranteed for a period of one year after by City Council acceptance of the project. E. The Contractor shall supply all water for planting and maintenance. 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DUBUQUE STREET STORM SEWER AND WATER MAIN IMPROVEMENTS PROJECT Sealed proposals will be received by the City Clerk of the City of Iowa City, Iowa, until 2:30 P.M. on the 26h day of July 2012. Sealed proposals will be opened immediately thereafter by the City Engineer or designee. Bids submitted by fax machine shall not be deemed a "sealed bid" for purposes of this Project. Proposals received after this deadline will be returned to the bidder unopened. Proposals will be acted upon by the City Council at a meeting to be held in the Emma J. Harvat Hall at 7:00 P.M. on the 315` day of July, 2012, or at special meeting called for that purpose. The Project will involve the following: Removal of existing storm sewer, pavement, debris, and abandonment of existing water main. Installation of new storm sewer, new water main, and PCC pavement. Installation of pervious PCC pavement HMA milling and overlay. All work is to be done in strict compliance with the plans and specifications prepared by City of Iowa City Engineering Division of Iowa City, Iowa, which have heretofore been approved by the City Council, and are on file for public examination in the Office of the City Clerk. Each proposal shall be completed on a form furnished by the City and must be accompanied in a sealed envelope, separate from the one containing the proposal, by a bid bond executed by a corporation authorized to contract as a surety in the State of Iowa, in the sum of 10% of the bid. The bid security shall be made payable to the TREASURER OF THE CITY OF IOWA CITY, IOWA, and shall be forfeited to the City of Iowa City in the event the successful bidder fails to enter into a contract within ten (10) calendar days of the City Council's award of the contract and post bond satisfactory to the City ensuring the faithful performance of the contract and maintenance of said Project, if required, pursuant to the provisions of this notice and the other contract documents. Bid bonds of the lowest two or more bidders may be retained for a period of not to exceed fifteen (15) calendar days following award of the contract, or until rejection is made. Other bid bonds will be returned after the canvass and tabulation of bids is completed and reported to the City Council. The successful bidder will be required to furnish a bond in an amount equal to one hundred percent (100 %) of the contract price, said bond to be issued by a responsible surety approved by the City, and shall guarantee the prompt payment of all materials and labor, and also protect and save harmless the City from all claims and damages of any kind caused directly or indirectly by the operation of the contract, and shall also guarantee the maintenance of the improvement for a period of five (5) year(s) from and after its completion and formal acceptance by the City Council. The following limitations shall apply to this Project: Early Start Date: August 13, 2012 Completion Date: November 2, 2012 Liquidated Damages: $750 per day The plans, specifications and proposed contract documents may be examined at the office of the City Clerk. Copies of said plans and specifications and form of proposal blanks may be secured at the Office of the City Engineer of the City of Iowa City, 410 E. Washington Street, Iowa City, Iowa, by bona fide bidders. A $30 refundable fee is required for each set of plans and specifications provided to bidders or other interested persons. The fee shall be in the form of a check, made payable to Treasurer of the City of Iowa City. The refund will be issued 2 weeks after bid opening if re- usable plans and specifications are returned to the City of Iowa City. Prospective bidders are advised that the City of Iowa City desires to employ minority contractors and subcontractors on City projects. A listing of minority contractors can be obtained from the Iowa Department of Inspections and Appeals at (515) 281- 5796 and the Iowa Department of Transportation Contracts Office at (515) 239 -1422. Bidders shall list on the Form of Proposal the names of persons, firms, companies or other parties with whom the bidder intends to subcontract. This list shall include the type of work and approximate subcontract amount(s). The Contractor awarded the contract shall submit a list on the Form of Agreement of the proposed subcontractors, together with quantities, unit prices and extended dollar amounts. By virtue of statutory authority, preference must be given to products and provisions grown and coal produced within the State of Iowa, and to Iowa domestic labor, to the extent lawfully required under Iowa Statutes. The Iowa reciprocal resident bidder preference law applies to this Project. The City reserves the right to reject any or all proposals, and also reserves the right to waive technicalities and irregularities. Published upon order of the City Council of Iowa City, Iowa. MARIAN K. KARR, CITY CLERK Prepared by: Brian Boelk, Public Works, 410 E. Washington St., Iowa City, IA 52240 (319) 356 -5437 RESOLUTION NO. 12 -335 RESOLUTION APPROVING PLANS, SPECIFICATIONS, FORM OF CON- TRACT, AND ESTIMATE OF COST FOR THE CONSTRUCTION OF THE S. DUBUQUE STREET STORM SEWER AND WATER MAIN IMPROVEMENT PROJECT, ESTABLISHING AMOUNT OF BID SECURITY TO ACCOMPANY EACH BID, DIRECTING CITY CLERK TO PUBLISH NOTICE TO BIDDERS, AND FIXING TIME AND PLACE FOR RECEIPT OF BIDS. WHEREAS, notice of public hearing on the plans, specifications, form of contract and estimate of cost for the above -named project was published as required by law, and the hearing thereon held; and WHEREAS, funds for this project are available in the Stormwater Utility account # 7700. NOW, THEREFORE, BE IT RESOLVED BY THE CITY COUNCIL OF THE CITY OF IOWA CITY, IOWA THAT: 1. The plans, specifications, form of contract and estimate of cost for the above -named project are hereby approved. 2. The amount of bid security to accompany each bid for the construction of the above - named project shall be in the amount of 10% (ten percent) of bid payable to Treasurer, City of Iowa City, Iowa. 3. The City Clerk is hereby authorized and directed to publish notice, not less than 4 and not more than 45 days before the date for filing the bids, for the receipt of bids for the construction of the above -named project in a newspaper published at least once weekly and having a general circulation in the city. 4. Sealed bids for the above -named project are to be received by the City of Iowa City, Iowa, at the Office of the City Clerk, at the City Hall, before 2:30 p.m. on the 26th day of July, 2012. At that time, the bids will be opened by the City Engineer or his designee, and thereupon referred to the City Council of the City of Iowa City, Iowa, for action upon said bids at its next regular meeting, to be held at the Emma J. Harvat Hall, City Hall, Iowa City, Iowa, at 7:00 p.m. on the 3151 day of July, 2012, or at a special meeting called for that purpose. Passed and approved this 10th day of ttd •: 2012 // Approved by ATTEST: A r� �i Ys :d A/ / /14— CITY °LERK City Attorney's Office pwengOubuque St - Storm Sewer & Water Main 2012 Resolution No. 12 -335 Page 2 It was moved by Dobyns and seconded by Dickens the Resolution be adopted, and upon roll call there were: AYES: x x x X x x x NAYS: ABSENT: Champion Dickens Dobyns Hayek Mims Payne Throginorton ADDENDUM NO. I July 26, 2012 S. DUBUQUE ST. STORM SEWER AND WATER MAIN IMPROVEMENTS PROJECT IOWA CITY, IOWA This information in this Addendum modifies, supplements, or replaces information contained in the Plans and /or Specifications, as applicable, and is hereby made a part of the Contract Documents. APPLICABLE TO THE SPECIFICATIONS 1. SECTION 02751 — DIRECTIONAL BORING AND DRILLING Delete all references to work and materials being provided by the City of Iowa City within this entire section. All boring related materials, including but not limited to boring pit and pipe material are to be provided by the contractor and included in bid item #28. Please note the Measurement and Payment section is correct and states that such items are to be included in this pay item. I hereby certify that this engineering document was prepared by me or under my direct personal supervision and that I am a duly licensed Professional Engineer under the laws of the State of Iowa. SIGNED: B inn A. Boelk, P. Senior Civil Engineer Iowa Reg, No. 16503 My license renewal date is December 31, 2012. DATE: Prepared by: Brian Boelk, Sr. Civil Engineer, 410 E. Washington St., Iowa City, IA 52240 (319)356 -5437 RESOLUTION NO. t2-359 RESOLUTION AWARDING CONTRACT AND AUTHORIZING THE MAYOR TO SIGN AND THE CITY CLERK TO ATTEST A CONTRACT FOR CONSTRUCTION OF THE S. DUBUQUE STREET STORM SEWER AND WATER MAIN IMPROVEMENTS PROJECT. WHEREAS, Schrader Excavating & Grading of Walford, Iowa has submitted the lowest responsible bid of $313,297.05 for construction of the above -named project; and WHEREAS, funds for this project are available in the Stormwater Utility account # 7700. NOW, THEREFORE, BE IT RESOLVED BY THE CITY COUNCIL OF THE CITY OF IOWA CITY, IOWA, THAT: 1. The contract for the construction of the above -named project is hereby awarded to Schrader Excavating and Grading, subject to the condition that awardee secure adequate performance and payment bond, insurance certificates, and contract compliance program statements. 2. The Mayor is hereby authorized to sign and the City Clerk to attest the contract for construction of the above -named project, subject to the condition that awardee secure adequate performance and payment bond, insurance certificates, and contract compliance program statements. 3. The City Engineer is authorized to execute change orders as they may become necessary in the construction of the above -named project. Passed and approved this 31st day of July 2012 MAYOR Approved by ATTEST: ?i �'� CITY CLERK City Attorney's Office It was moved by Dobyns and seconded by Payne the Resolution be adopted, and upon roll call there were: AYES: x X X X x x X pwenglma sters�awrdwn.do NAYS: ABSENT: Champion Dickens Dobyns Hayek Mims Payne Throgmorton C' Printer's Fee $ CERTIFICATE OF PUBLICATION STATE OF IOWA, JOHNSON COUNTY, SS: THE IOWA CITY PRESS- CITIZEN FED.ID #42- 0330670 I, &6-eg SulAC1 f being duly sworn, say that I am the legal cleric of the IOWA CITY PRESS- CITIZEN, a newspaper published in said county, and that a notice, a printed copy of which is hereto attached, was published in said paper I time(s), on the following date(s): Legal Cle < Subscribed and sworn to before me this a4-4-day of A.D. 20—ld_. s-- Notary Public ya"ta LINDAKROTZ CornrnissbnNufnbef732619; My Commisslon alIk" January 27 20Tq IOWA OF THE CITY WA. AND TO Public notice Is hereby given that the city. Council of the City of Iowa City, Iowa, will conduct a public hearing on plans, specifications, form of contract, special provisions and eslimate'.of cost for the con - ofr6ennn Of the S. Dubuque Street on the Min day or Amy, , Vie nto he held in the Street In g is canb a of the Sat. plan Said plans, specifications, form of contract, special provisions and estimate of cost are now on file in the office of the City Clerk in City Hall In Iowa City, Iowa, and may be inspected by any Interested. per- sons. Any .interested persons may appear: at said meeting of the City Council for the purpose of making objections to and comments con- cerning said plans, specifications, contract or the cost of making said Improvement. This notice is given by order of the City Council of the City of Iowa City, lowa and as provided by law. MARIAN K. KARR, CITY CLERK x rm_ 629s June 26, 2012 Printer's Fee $_��_�� CERTIFICATE OF PUBLICATION STATE OF IOWA, JOHNSON COUNTY, SS: THE IOWA CITY PRESS- CITIZEN FED.ID #42- 0330670 I, JL o g-E�L being duly sworn, say that I am the legal cleric of the IOWA CITY ,PRESS- CITIZEN, a newspaper published in said county, and that a notice, a printed copy of which is hereto attached, was published in said paper _ I time(s), on the following date(s): Legal Cle Subscribed apd sworn to rem this /&'— day of A.D. 20_j,�_-. Notary - Public *10 LINDA KROTZ Commission Ntimbei 732619 Nry Commis on Ei pire Janua 27,2014 OFFICIAL PUBLICATION NOTICE TO BIDDERS S. DUBUQUE STREET STORM SEWER AND WATER MAIN IMPROVEMENTS PROJECT Seated proposals will be received by the City Clerk of the City of Iowa City, Iowa, until 2:30 P.M. on the 26th day of July 2012. Sealed proposals will be opened immedi- ately thereafter by the City Engineer or designee. Bids submitted by fax machine shall not be deemed a 'sealed bid" for purposes of this Project. Proposals received after this deadline will be returned to the bidder unopened. Proposals Will be acted upon by the City Council at a meeting to be held in the Emma J. Harvat Hall at 7:00 P.M. on the 31st day of July, 2012, or at special meeting called for that pur- pose. The Project will Involve the follow- ng: Removal of existing storm sewer, pavement, debris, and abandon- ment of existing water main. Installation of new storm sewer, new water main, and PCC pave- ment, installation of pervious PCC pavement HMA milling and over- lay. All work is to be done in strict compliance with the plans and specifications prepared by City of Iowa City Engineering Division of Iowa City, Iowa which have rCity fore been app r Y the Council, and are on file for public examination in the Office of the City Clerk. Each proposal shall be completed on a form furnished by the City and must be accompanied in a sealed envelope, separate from the one containing the proposal, by a bid bond executed by a corporation authorized to contract as a surety in the State of Iowa, in the sum of 10% of the bid. The bid security shall be made payable to the TREASURER OF THE CITY OF IOWA CITY, IOWA, and shall be forfeited to the City of Iowa City in the event the successful bidder fails to enter into a contract within ten (10) calendar days of the City Council's award of the contract and post bond satisfactory to the City ensuring the faithful perfor- mance of the contract and mainte- nance of said Project, if required, pursuant to the provisions of this notice and the other contract documents. Bid bonds of the low- est two or more bidders may be retained for a pedod of not to exceed fifteen (15) calendar days following award of the contract, or until rejection Is made. Other bid bonds will be returned after the canvass and tabulation of bids is completed and reported to the City Council The successful bidder will be required to furnish a bond in an amount equal to one hundred per- cent (100 %) of the contract price, said bond to be issued by a responsible surely approved by the City, and shall guarantee the prompt payment of all materials and labor, and also protect and save harmless the City, from all claims and damages of any kind caused directly or Indirectly by the operation of the contract, arid shall also guarantee the maintenance of the improvement for a period of five (5) year(s) from and after its completion and formal acceptance by the City Council. The following limitations shall apply to this Project: Early Start Date: August 13, 2012 Completion Date: November 2, 2012 Liquidated Damages: $750 per day The plans, specifications and pro- posed contract documents may be examined at the office of the City Clerk. Copies of said plans and specifications and form of proposal blanks may be secured at the Office of the City Engineer of the City of Iowa City, 410 E. Washington Street, Iowa City, Iowa, by bona fide bidders. A $30 refundable fee Is required for each set of plans and specifica- tions provided to bidders or other interested persons. The fee shall be in the form of a check, made payable to Treasurer of the City of Iowa City. The refund will be Issued 2 weeks after bid opening if re- usable plans and specifications are returned to the City of Iowa City. Prospective bidders are advised that the City of Iowa City desires to employ minority contractors and subcontractors on City projects. A listing of minority contractors can be obtained from the Iowa Department of. Inspections and Appeals at (515) 281 -5796 and the Iowa Department of Transportation Contracts Office at (515) 239 -1422. Bidders shall list on the Form of Proposal the names of persons, firms, companies or other parties with whom the bidder intends to subcontract. This list shall Include the type of work and approximate subcontract amounl(s). The Contractor awarded the con- tract shall submit a list on the Form of Agreement of the proposed sub- contractors, together with quanti- ties, unit prices and extended dol- lar amounts. By virtue of statutory authority, preference must be given to prod- ucts and provisions grown and coal produced within the State of Iowa, and to Iowa domestic labor, to the extent lawfully required under Iowa Statutes. The Iowa reciprocal resident bidder prefer- ence law applies to this Project. The City reserves the right to reject any or all proposals, and also reserves the right to waive techni- calities and irregularities. Published upon order of the City Council of Iowa CRY, Iowa. MARIAN K. KARR, CITY CLERK 1. -,> 11 July 1Q 2012 Prepared by: Brian Boelk, Public Works, 410 E. Washington St., Iowa City, IA 52240 (319) 356 -5437 RESOLUTION NO. 12 -521 RESOLUTION ACCEPTING THE WORK FOR THE S. DUBUQUE STREET STORM SEWER AND WATER MAIN IMPROVEMENTS PROJECT WHEREAS, the Engineering Division has recommended that the work for construction of the S. Dubuque Street Storm Sewer and Water Main Improvements Project, as included in a contract between the City of Iowa City and Schrader Excavating and Grading Co. of Walford, Iowa, dated July 3, 2012, be accepted; and WHEREAS, the Engineer's Report and the performance and payment bond have been filed in the City Clerk's office; and WHEREAS, funds for this project are available in the Stormwater Utility account #7700; and WHEREAS, the final contract price is $348,617.94. NOW, THEREFORE, BE IT RESOLVED BY THE CITY COUNCIL OF THE CITY OF IOWA CITY, IOWA, THAT said improvements are hereby accepted by the City of Iowa City, Iowa. Passed and approved this 18th day of ATTEST: ,n CITY C1ERK December 20 12 . MAYOR Approved by City Attorney's Office It was moved by Champion and seconded by Payne the Resolution be adopted, and upon roll call there were: AYES: X X X x x X Rveng /masters/acptwork.dw 12/12 luxim ABSENT: Champion Dickens Dobyns Hayek Mims Payne Throgmorton 12- 2d(8)