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HomeMy Public PortalAboutResolution 2019-63, Approving Plans & Specifications To Solicit Bids For Sanitary Sewer Rehabiliatation RESOLUTION NO. 2019-63 RESOLUTION APPROVING PLANS AND SPECIFICATIONS AND TO SOLICIT BIDS FOR THE SANITARY SEWER REHABILITATION FOR THE CITY OF RIVERDALE, IOWA WHEREAS, the City Council of the City of Riverdale ("City") authorized its Engineer MSA Professional Services ("MSA") to prepare plans and specifications for bid for certain improvements to reduce infiltration and inflow to the sanitary sewer system in the City; and, WHEREAS, MSA has provided plans and specifications for Project no. 10876061, prepared November 27, 2019. NOW THEREFORE, BE IT RESOLVED, BY THE CITY COUNCIL OF THE CITY OF RIVERDALE, SCOTT COUNTY, IN THE STATE OF IOWA: Section 1. That the plans entitled"Riverdale Sanitary Sewer Rehabilitation", project no. 10876061, specifications prepared November 27, 2019 are hereby approved. Section 2. That MSA shall publish, advertise, solicit bids and prepare a bid tabulation for said project for future Council consideration; and, Section 3. That the Mayor shall authorize and City Clerk attest orders for MSA to proceed as stated herein. PASSED AND APPROVED this 10th day of December, 2019. i •\\1.9.34:::: 41 ,_ Bawden, Mayor ATTEST: VDtpii VAI4i-e-Alaiii4141. Mary Fiances Blevins, City Clerk Prepared by: Tim Long December 5, 2019 I RIVERDALE SANITARY SEWER REHABILITATION CITY OF RIVERDALE SCOTT COUNTY, IOWA F1NN1S1IRIVE SUDAS DETAILS PIIOJF GT LOCATION 5..■N ■._ ■m 6010.301 -_11■ 1■*j 6010.601 lit ■ll. 8030.104 :MrI s''L `'• LEGEND ■ ■ _r •_PROJECT LOCATION: .. -— -------- --_-- ■ ■ ` SCOTT COUNTY,IOWA rw - 8 ®REPAIR t ;'ELECTRIC , is i. ' ,+- v.' LL]GAS J .,r Y/ "144 El WATER VALLEY DRIVEeryi qO"b SHEET INDEX PROJECT LOCATION is � � UTILITIES GENERAL SHEETS(G) ♦ r //w�HA.•' CI TITLE SHEET 1 ' A ,E'y. ` f GASBELECTRIC; E G2 GENERAL NOTES MIDAMERICAN GAS COMPAN Y 8 G3 DETAILS AND QUANTITY TAKE-OFF ; / 5 r$ • ' DIANE HIRL (309)793-3645 SANITARY SEWER ( DHHIRL@MIDAMERICAN.COM RI FENNOREPAIRDRR)IVE R2 VALLEY DRIVE TELEPHONE: R3 SOUTH KENSINGTON STREET - ' CENTRAL SCOTT TELEPHONE R5 WISTERIA LANE �, p f; RICK2ILLUPS THESE PLANS ARE RS SYCAMORE LANE � � ' " � ' - (563)285-9611 1'�C. u L SOUTH BELLINGHAM STREET(Mt) RICKQCSTECH.COM SANITARY MANHOLE REPAIR(M) f A ,,,,,,,, 41",:1„ x �` �,,. , "` PROJECT LOCATION INTENDED TO BE M1 SOUTH BF.LLIN(iHAM STREET J ' l `�[✓'�7.1 WATER. �. SOUTH BELLINGHAM STREET(Lt) IOWA AMERICAN WATER COMPANY PRINTED AND SANITARY LATERAL REMOVAL AND ABANDONMENT(L) y PROJECT LOCATION DAVID KULL VIEWED IN COLOR L 1 —SOUTIi BELLMlGHAM STREET `+ a - (563)4689225 L � ✓ DAVID KULL@AMWATERCOM . R IN RNET. FOR PERMIT yk., e x F CENTURY LINK '4 „ 1�T �' TOM STORMER • _ . 720)578&90 APPLICATION f PNINE. • - - _ THOMAS STURMER@CENTURYLINK COM — OI,FT� i-�� T IEry 4 1 -, SOUTH KENSINGTON STREET O �,�yl II�JJV-T PROJECT I HEREBY CERTIFY THAT THIS ENGINEERING DOCUMENT WAS PREPARED BY ME O C OR UNDER MY DIRECT PERSONAL SUPERVISION AND TIMI I AM A DULY SM M1 p�A • .( ^?*s q LICENSED PROFESSION. ENGINEER UNDFR THE LAWS OF THE STATE OF ((���T7 • A �'.' OWA. 1-800.292-8989 +CY SYCAMORE LANE i ,4WISTER A LANE^A l PROJECT LOCATION ,,` "� PROJECT LOCATION f DATE WWW.IOW 'OII.COT ...,« .,".'TIDY , ' tv: - SIGNATURE { .. •�, NAME CHRISTIAN ROBERT COOPER, PE 7F J*', LICENSE NUMBER.P23729 MY LICENSE RENEWAL DATE IS DECEMBER.31,2019 iisk I LOCATION MAP PAGES OR SHEETS COVERED BY THIS SEAL:ALL u ALE m1yEf.a.. f 1, i • .. ^_ )�/+ SA T ROWING 'isin..ai :`°I,w".�: . RIVERDALE SANITARY OF RIVERDALE REHABILITATION '0876051., �„ +-- .W—«_F TITLE SHEET SCOTT COUNTY,IOWA �� DATE COMPLETED: 11/27/2019 CITY OF RIVERDALE SANITARY SEWER REHABILTATION 2019 CIPP REDUCTION OF I & I ESTIMATE YEAR: 2019 CONSTRUCTION YEAR: 2020 ITEM1 NO. DESCRIPTION QTY. UNIT UNIT PRICE TOTAL PRICE Project Specifics 1 TRAFFIC CONTROL,SUDAS 8030.104 1 LS $ 7,000 $ 7,000 2 EXTERIOR CHIMNEY SEAL 6 EA $ 3,000 $ 18,000 3 INTERIOR MANHOLE JOINT SEAL 8 EA $ 350 $ 2,800 4 MANHOLE JOINT SEALING-SPECIAL 3 EA $ 1,000 $ 3,000 5 FURNISH SANITARY MANHOLE CASTINGS,SW-601 6 EA $ 1,000 $ 6,000 6 SANITARY SEWER TELEVISING 1055 LF $ 4 $ 4,220 7 CURED IN PLACE PIPE LINING 1055 LF $ 28 $ 29,540 8 REINSTATE LATERAL CONNECTIONS 10 EA $ 150 $ 1,500 9 REAM PROTRUDING LATERAL 3 EA $ 250 $ 750 10 ABANDON SANITARY LATERAL SERVICE 7 EA $ 1,500 $ 10,500 11 EXPLORATORY EXCAVATION 1 LS $ 3,000 $ 3,000 12 EXCAVATED SANITARY SEWER LATERAL CONNECTION REPAIR 1 EA $ 5,000 $ 5,000 13 TYPE III BARRICADES(TEMPORARY INSTALLATION) 2 EA $ 350 $ 700 14 TYPE 1 SEEDING 650 SY $ 4 $ 2,600 15 EROSION CONTROL BLANKET 600 SY $ 5 $ 3,000 16 GRANULAR SUBBASE MATERIAL 32 TON $ 50 $ 1,600 17 HOT MIX ASPHALT 5 TON $ 150 $ 750 18 MOBILIZATION 1 LS $ 9,000 $ 9,000 CONSTRUCTION SUBTOTAL $108,960 Inflation 2% per year $2,179 CONSTRUCTION SUBTOTAL( 2020 ) $111,139 Contingency 5% $5,600 Design Engineering&Bidding $0 Construction Engineering $0 "estimate does not include grant administrative costs MSA G:\10 10876 108760fi \ \ 1\Calculations\10876061 190904 Opinion of Probable Construction Cos[ Completed By PROJECT SPECIFICATIONS FOR RIVERDALE SANITARY SEWER REHABILITATION CITY OF RIVERDALE SCOTT COUNTY, IA Pay Item 1 Traffic Control, SUDAS 8030.104 Traffic Control shall consist of lane closures for locations were Contractor equipment is stored, areas of operation, areas where manhole lids need to remain removed from the manhole, and areas of excavation and pavement repair. It is expected the number of lane closures will be at least seven. If not more. The total number of lane closures is largely dependent upon how the Contractor and their subcontractors executes this project. This pay item is for the total number of lane closures required and is therefore, a lump sum item, rather than payment for each lane closure. Sign installation, location, advance warning, etc. shall conform to the applicable portions of SUDAS Section 8030 —Temporary Traffic Control. This work will be paid at the contract unit price per lump sum for TRAFFIC CONTROL SUDAS 8030.104, for all the lane closures required by the Contractor. Pay Item 2 Exterior Chimney Seal Exterior chimney seals shall be furnished, installed, and paid for in conformance to the Specification for Exterior Chimney Seal included in this Technical Specification Section. This work shall include the labor and equipment necessary to expose the existing manhole chimney, except that pavement removal will be paid as part of Pay Item 15. This work will be paid at the contract unit price per each for EXTERIOR CHIMNEY SEAL. Pay Item 3 Interior Manhole Joint Seal Interior Manhole Joint Seals shall be furnished, installed and paid for in conformance to the Specification for Internal Manhole Joint Seal included in this Technical Specification Section. This work shall also include the work necessary to access the interior of the manhole, the installation of systems and access necessary to allow for extended work time within the manhole, required photography, and closure of the manhole. This work will be paid at the contract unit price per each for INTERNAL MANHOLE JOINT SEAL. Project Number 108761 Doc: 10876061 1909 Main Specification Pay Item 4 Manhole Joint Sealing Special This work shall be performed in accordance to the CSI Specification 33 01 30.73 and shall incorporate the accompanying ENGINEER amendments. This work shall also include the work necessary to access the interior of the manhole, the installation of systems and access necessary to allow for extended work time within the manhole, required photography, and closure of the manhole. If pipe connections to the manhole require sealing, each pipe connection shall be paid for separately. This work will be paid at the contract unit price per each MANHOLE JOINT SEALING — SPECIAL. Pay Item 5 Furnish Sanitary Manhole Castings, SW-601 This work shall consist of furnishing sanitary manhole casting and adjustment rings that conform to the applicable portions of SUDAS Section 6010 — Structures for Sanitary and Storm Manholes. This work is for the furnishing of the specified manhole frame, the associated specified manhole lid, and adjustment rings as a combined unit. This work will be paid at the contract unit price per each for FURNISH SANITARY MANHOLE CASTINGS Pay Item 6 Sanitary Sewer Televising This work shall be performed in conformance to performance portions of CSI Specification 33 01 30.16. This work shall include the televising of the sewer prior to performing repairs and the televising of the sewer after repairs are completed. However, televising will only be paid upon completion of the televising after repairs are completed. Furthermore, televising is only paid for as the combined effort of televising the sewer lines prior to repair and after repair. The Contractor shall submit post repair televising digital files to the ENGINEER for review. . This work will be paid at the contract unit price per lineal foot for SANITARY SEWER TELEVISING. Project Number 108761 Doc: 10876061 1909 Main Specification Pay Item 7 Cured In Place Pipe Lining, 8" This work shall be performed in accordance with the performance portions of CSI Specification 33 01 30.16. Measurement for payment shall be in accordance with Section 4.02, Part A. Should a sanitary sewer proposed to be lined in the project be determined unsuitable for lining in the field, the Contractor shall immediately bring evidence of this claim to the Engineer's attention prior to installing Cured In Place Pipe Linings. Sanitary sewer point repairs within the area proposed to be lined shall be made as directed and deemed necessary by the Engineer. Point repair work shall then be added to the contract utilizing change order(s), assuming that a mutually agreed price for the work can be established. This item will not be paid until digital files for post-lining televising have been submitted for review and accepted by ENGINEER. There are joints where the existing gasket has been damaged and is partly obstructing, or could potentially obstruct, flow. These gaskets are to be cut and removed. The cutting and removing of these damaged gaskets is considered inclusive to the sanitary sewer cleaning effort. Liner wrinkles due to inverting the liner too quickly, suspected breaks, or inclusion of foreign material will be repaired at no cost to the OWNER. Deficiencies identified in the project punch list proposed to be corrected with short liner patches shall have hydrophilic end seals to promote water tightness. Calculations shall be provided to the ENGINEER for review prior to patching that demonstrate the capacity of the host pipe will not be reduced by more than 8 percent after installing additional line thickness This work will be paid at the contract unit price per lineal foot for CURED IN PLACE PIPE LINING, 8". Pay Item 8 Reinstate Lateral Connections This work shall be performed in accordance with applicable portions of CSI Specification 33 01 30.16. Please note the plans indicate some laterals that are to be abandoned by not reinstating the lateral connection. The Contractor shall conform these laterals are not active with the OWNER. This item will not be paid until digital files for post-lining televising have been submitted for review and accepted by Engineer. This work will be paid at the contract unit price per each for REINSTATE LATERAL CONNECTIONS. Project Number 108761 Doc: 10876061 1909 Main Specification Pay Item 9 Ream Protruding Line Tap This work shall be performed in accordance with applicable portions of CSI Specification 33 01 , When reaming protruded lateral taps, use care to prevent damage to the sewer main. Should OWNER produced video indicate that the sewer main around a protruded lateral tap is intact and undamaged, and damage to the sewer main is caused by a protruded lateral tap by the Contractor's reaming operation, the resulting damage to the sewer main shall be repaired at no cost to the OWNER. This item will not be paid until digital files for Sanitary Sewer Televising have been submitted for review and accepted by ENGINEER. This work will be paid at the contract unit price per each for REAM PROTRUDING LINE TAP. Pay Item 10 Abandon Sanitary Sewer Lateral Service This work shall conform to the applicable portions of SUDAS Section 4010 — Sanitary Sewers and the applicable portions of SUDAS Section 10,010 —Demolition of Building Structure. The plug shall consist of about two feet of non-shrink grout. The location of the plug shall be within a reasonable distance of surface features (i.e. pavement) or buried utilities that are not intended to be disturbed. Sanitary sewer laterals that are abandoned by CIPP are not eligible for payment. This work will be paid at the contract unit price per each for ABANDON SANITARY SEWER LATERAL SERVICE. Pay Item 11 Lateral Grouting This work shall conform to the applicable portions of CSI Specification 33 01 30.61. This work will not be paid until digital files for Sanitary Sewer Televising have been submitted for review and accepted by ENGINEER. This work will be paid at the contract unit price per each for LATERAL GROUTING Pay Item 12 Exploratory Excavation This work shall consist of the Contractor's effort to locate and excavate the sanitary sewer services to be abandoned (Pay Item 10) shown on sheet L1. Smoke testing that was performed on these laterals did not confirm that all these laterals are improperly abandoned. However, performed smoke testing did indicate that some of these sanitary service laterals were improperly abandoned. Therefore, this pay item is intended to Project Number 108761 Doc: 10876061 1909 Main Specification verify that abandoned laterals are properly abandoned and to properly abandon laterals that have not yet been abandoned. The Contractor shall excavate as necessary to locate (if possible) and confirm that laterals are improperly or properly abandoned. The location of the laterals shown on the plans is scaled and are determined by sanitary sewer televising and record drawings. The locations shown are estimated to be accurate within 10 feet of the actual wye location. It is assumed the lateral location is installed approximately perpendicular to the sanitary sewer. Therefore, the Contractor is not expected to excavate to a depth greater than two feet above the elevation of the sanitary sewer and to a horizontal position more than ten feet either side of the shown wye location. In addition, it is expected the Contractor will remain well enough away from the Mississippi River Trail to prevent any damage to the Trail or the sub-grade supporting the trail. The backfill of the areas of digging shall be the same material that was excavated. The Contractor shall make a reasonable effort to compact the backfill in lifts not exceeding 12 inches. The excavated topsoil shall be placed on the excavated area. The creating of mounded areas as part of the restoration is acceptable. The Contractor is not expected to haul material offsite or to import material as part of the backfilling operations. Seeding of the restored area will be paid as part of Pay Item 16. The installation of erosion control blanket will be paid as part of Pay Item 17. Stripping, storing, and replacing the topsoil will be paid as part of Pay Item 14. This work will be paid at the contract unit price per lump sum for EXPLORATORY EXCAVATION. Pay Item 13 Excavated Sanitary Lateral Repair Connection This work shall consist of excavating to the depth of the sanitary sewer, removing a broken clay wye fitting, and cutting in a PVC wye fitting. This work includes the furnishing and installing of necessary Fernco sleeves and segments of PVC pipe to construct this repair to a wye, excavation to expose the broken wye, backfill and compaction, and completing the construction of the backfill to an elevation acceptable to start the construction of the aggregate base for the roadway patch. This repair shall be completed prior to constructing the cured in place pipe lining for this sanitary sewer line. The contractor shall leave one half of the roadway accessible for vehicular traffic. Excavation shall conform to the applicable portions of. SUDAS Section 2010 —Earthwork, Subgrade, and Subbase. The PVC pipe and wye fitting shall conform to SUDAS 4010 — Sanitary Sewers, Section 2, subpart 2.01.A. The PVC wye fitting and sanitary service pipe shall conform to SUDAS 4010 — Sanitary Sewers, Part 2, subpart 2.04. Project Number 108761 Doc: 10876061 1909 Main Specification The installation shall conform to the applicable portions of SUDAS 4010 — Sanitary Sewers, Section 3. When excavation extends into the existing lawn, the existing top soil shall be placed on top of the existing compacted backfill. For restoration of the pavement, the existing pavement shall have a sawcut edge(s) to construct the new hot-mix asphalt patch against. Seeding of the restored area will be paid as part of Pay Item 17. The installation of erosion control blanket will be paid as part of Pay Item 18. Pavement removal will be paid as part of Pay Item 16. The restoration of the roadway aggregate base will be paid as part of Pay Item 19. The construction of the hot mix asphalt patch will be paid as part of Pay Item 20. Stripping, storing and replacing the topsoil will be paid as part of Pay Item 15. Traffic Control will be paid as part of Pay Item 1. The item will be paid at the contract unit price per each for EXCAVATED SANITARY LATERAL REPAIR CONNECTION. Pay Item 14 Type III Barricades (Temporary Installation) This work shall consist of furnishing and installing Type III barricades to close the Mississippi River Trail to bicycle and pedestrian traffic while the Contractor is working on Pay Items 10 and 11. Each Type Ill barricade installation shall extend the width of the Mississippi River Trail. The Type III barricades shall conform to SUDAS Section 8030 —Temporary Traffic Control, part 2.03, subpart G. The Type III barricades shall be installed prior to starting work for Pay Items 10 and 11. The Contractor shall provide the City 48 hours advance notice prior to installing the Type III barricades. The Type III barricades shall be removed once the work for Pay Items 10 and 11 has been completed and approved by the ENGINEER. This work will be paid at the contract unit price per each for TYPE III BARRICADES (TEMPRORARY INSTALLATION). Pay Item 15 Stripping, Salvaging, and Spreading Topsoil This work shall conform to the applicable portions of SUDAS Section 2010. Salvaged topsoil that is placed in residents' front yards shall all limit the size of clumps to 2 inches. Clumps shall be incorporated into the final grading of the topsoil so that the surface of the topsoil appears level. This work will be paid at the contract unit price per lump sum for STRIPPING, SALVAGING, AND SPREADING TOPSOIL. Project Number 108761 Doc: 10876061 1909 Main Specification Pay Item 16 Pavement Removal This work shall conform to the Section 2510 of the Iowa Department of Transportation Standard Specifications for Highway and Bridge Construction. This work will be paid at the contract unit price per square yard for PAVEMENT REMOVAL. Pay Item 17 Type I Seeding This work shall conform to the applicable portions of SUDAS Section 9010 — Seeding. The application of a fertilizer is not required. The seed material shall conform to SUDAS Type I (Permanent Lawn) seed mixture. This work will be paid at the contract unit price per square yard for TYPE I SEEDING. Pay Item 18 Erosion Control Blanket This work shall consist of furnishing and installing Temporary Rolled Erosion Control Products in conformance with SUDAS Section 9040 — Erosion and Sediment Control. The classification of the material to be furnished and installed function of when the work is performed and therefore, how long the material is expected to maintain its viability. The Contractor shall submit bids as if furnishing and installing RECP Type 2. However, if schedule allows, and with the ENGINEERS approval, the Contractor may substitute RECP Type 1 without providing a credit to the project. This work will be paid at the contract unit price per square yard for EROSION CONTROL BLANKET. Pay Item 19 —Granular Subbase Material, 10" This work includes the furnishing of aggregate, placement in a ten-inch compacted layer, all in conformance to the applicable portions of SUDAS Section 2010 — Earthwork, Subgrade, and Subbase. Granular Subbase Material, 10" is required beneath and within one foot of the hot mix asphalt patch (Pay Item 18). This work will be paid at the contract unit price for GRANULAR SUBBASE MATERIAL, 10" Pay Item 20 — Hot Mix Asphalt, 3" This work includes the furnishing of hot mix asphalt, placing it, and compacting it into two lifts, 1.5 inches each. The construction of the lifts shall be timed so that tack coat is not required between lifts. Project Number 108761 Doc: 10876061 1909 Main Specification This work shall conform to the applicable portions of SUDAS, Section 7020 — Hot Mix Asphalt Pavement. The mix design shall be submitted to the ENGINEER for approval. However, no further testing or sampling of the installation is required as long as the Contractor makes a reasonable effort to compact the asphalt installation in two lifts. Hot mix asphalt shall only be constructed on a compacted Granular Subbase Material, ten inches or more in thickness. This work will be paid at the contract unit price per ton for HOT MIX ASPAHLT, 3". Pay Item 21 — Mobilization This item shall conform to SUDAS Section 11,020 —Mobilization. This work shall be paid at the contract unit price per lump sum for MOBILIZATION. Sanitary Sewer Cleaning, Inspection, and Testing of Sewers This work is included as part of the Cured-in-place pipe lining. This work shall conform to SUDAS Section 4060, Cleaning, Inspection (including televising), and Testing of Sewers. However, the Contractor shall not have to comply with Sections 3.04 or 3.05. This work is included in Pay Item 6 and Pay Item 7. No additional compensation will be allowed for this item. General: 1. Damaged caused to sewer main, laterals, and manholes from the work performed will be the responsibility of the Contractor and bid unit prices shall reflect this. 2. Contractor shall be responsible for any and all expenses incurred resulting from sewage backups due to Contractor negligence. Receipts indicating that all claims have been paid in full shall be submitted to the Engineer prior to project close out and release of retainage. Project Number 108761 Doc: 10876061 1909 Main Specification SECTION 33 01 30.61 SANITARY SEWER TESTING AND SEALING 3 PART 1 GENERAL 1.01 APPLICABLE PROVISIONS 5 1.02 APPLICABLE PUBLICATIONS 6 A. The following publications of the issues listed below, but referred to thereafter by 7 basic designation only, form a part of this Specification to the extent indicated by 8 the reference thereto. 9 1. American Society for Testing and Materials (ASTM), Annual Book of 1 ASTM Standards: 11 a. ASTM D333 - Standard Test Method for Clear and Pigmented 12 Lacquers, Current Edition. 13 b. ASTM D543 - Test Method for Resistance of Plastics to Chemical 14 Reagents, Current Edition. 15 c. ASTM D638 - Test Method for Tensile Properties of Plastics, 16 Current Edition. 17 d. ASTM D790 - Test Method for Tensile Properties of Unreinforced 18 and Reinforced Plastics and Electrical Insulating Materials, 19 Current Edition. 20 e. ASTM D1693 - Test Method for Environmental Stress-Cracking of 21 Ethylene Plastics, Current Edition. 22 f. ASTM D3362 - Test Method for Purity of Acrylate Esters by Gas 23 Chromatography, Current Edition. 24 g. ASTM D3548 - Standard Specification for Ethyl Acrylate. 25 h. ASTM D3792 - Standard Test Method for Water Content of L6 Coatings by Direct Injection Into a Gas Chromatograph, Current 27 Edition. 28 i. ASTM D5155 - Standard Test Method for Polyurethane Raw 29 Materials Determination of the Isocyanate Content of Aromatic 30 Isocyanates, Current Edition. 31 j. ASTM D6437 - Standard Test Method for Polyurethane Raw 32 Materials: alkalinity in Low-Alkalinity Polyols (Determination of 33 CPR values of Polyols), Current Edition. 34 k. ASTM F2304 - Standard Practice for Sealing of Sewers Using 35 Chemical Grouting, Current Edition. 36 1. ASTM F2454 - Standard Practice for Sealing Lateral Connections 37 and lines from the mainline Sewer Systems by the Lateral Packer 38 Method, Using Chemical Grouting, Current Edition. Project#10876061 33 01 30.61-1 Sanitary Sewer Testing and Sealing 0 2019 MSA Professional Services,Inc. 1.03 DESCRIPTION OF WORK A. Work under this section shall cover all materials, equipment, labor and supervision necessary to seal existing sanitary sewer that are otherwise structurally sound to eliminate infiltration, as indicated on the contract drawings and as specified herein. 6 1.04 RELATED WORK ELSEWHERE 7 1.05 SUBMITTALS 8 A. Contractor shall submit such product literature and catalog cuts of materials to be 9 supplied to relate these materials to these specifications. 10 1. Submit manufacturer's material data and application and installation 11 instructions for all products used. 12 2. Provide documentation that the proposed manhole rehabilitation process 13 has a minimum 5 year history for sealing of sanitary sewer pipes on 14 projects of similar size and scope. 15 1.06 OPERATION/MAINTENANCE MANUALS AND INSTRUCTIONS (NONE) 16 1.07 QUALITY ASSURANCE 17 A. Corrosion: 18 1. Chemical sealing materials, when cured, will be chemically resistant to 19 withstand internal exposure to domestic sewage. 20 B. Manhole Connections: 21 1. All manhole connections shall be watertight. 22 C. Service Connections: 23 1. All service connections shall be watertight. 24 D. Testing: 25 1. Test finished pipe sealing in accordance with specification as provided 26 herein. 27 PART 2 PRODUCTS AND MATERIALS 28 2.01 CHEMICAL SEALING MATERIALS 29 A. The chemical sealing material shall be of a type which has a documented record 30 of satisfactory performance in sewer usage. 31 1. All grout materials must have the following characteristics: 32 a. While being injected, the grout must be able to react/perform in the 33 presence of water(groundwater). Project#10876061 33 01 30.61-2 Sanitary Sewer Testing and Sealing Cl 2019 MSA Professional Services,Inc. 1 b. The ability to increase grout mix viscosity, density and gel strength by increased concentration of constituents or the use of approved additives. 4 c. The cured grout must withstand submergence in water without 5 degradation. 6 d. The resultant grout formation must be homogeneous and prevent 7 the passage of water(infiltration) through the pipe joint. 8 e. The grout must not be biodegradable. 9 f. The cured grout should be chemically stable and resistant to 10 organics found in sewage. 11 g. Residual grout shall be easily removable from the sewer line to 12 prevent blockage of the sewage flow. 13 2. Handle, mix, and store grout in accordance with the manufacturer's 14 recommendations. The materials shall be delivered to the site in unopened 15 original manufacturer's containers. 16 B. All grouting material shall be delivered to the job site in the original, labeled and 17 unopened containers. 18 C. Contractor shall submit with his bid, the brand name manufacturer of the 19 chemical grout(s) intended for use. The chemical grout(s) shall be one of the 20 following types: 21 1. Water based chemical grouts shall have the following characteristics: 22 a. A minimum of 10% acrylamide base materials by weight in the 23 total grout mix. A higher concentration of acrylamide base 24 material is recommended to increase strength or offset dilution 25 during injection. 26 b. The ability to tolerate some dilution and react in moving water 27 during injection. 28 c. A viscosity of approximately 2 centipoise, which can be increased 29 with approved additives. 30 d. A controllable reaction time from 10 seconds to 1 hour. 31 e. A reaction (curing) that produces a homogenous, chemically 32 stable, non-biodegradable, firm, flexible gel. 33 f. The ability to increase mix viscosity, density and gel strength by 34 increased concentrations of the mix constituents or by the use of 35 approved additives. 36 g. Product manufacturer: 37 1) Avanti AV-100; or equal. 38 h. Acrylate base grout shall have the following characteristics: 39 1) A minimum of 10% acrylate base material by weight in the 40 total grout mix. 41 2) The ability to tolerate some dilution and react in moving 42 water during injection. 43 3) A viscosity of approximately 1-3 centipoise, which can be 44 increased with approved additives. Project#10876061 33 01 30.61-3 Sanitary Sewer Testing and Sealing 0 2019 MSA Professional Services,Inc. 1 4) A controllable reaction time from 10 seconds to 1 hour. 5) A reaction (curing) that produces a homogenous, chemically stable, non-biodegradable, firm, flexible gel. 4 6) The ability to increase mix viscosity, density and gel 5 strength by the use of approved additives. 6 7) Product Manufacturer: a) DeNeef AC-400, DeNeef Gelacryl SR, Avanti 8 AV-160; or equal. 9 2. Additives: 10 a. At the Contractor's discretion and according to field conditions, 11 additives may be selected and used within the manufacturers 12 recommended quantities. 13 b. Strengthening Agents 14 1) For joint grouting, a latex or "diatomaceous earth" additive 15 may be added to increase compressive and tensile strength. 16 The quantity of strengthening agent additive shall be as 17 recommended by the manufacturer and approved by 18 Engineer. Product Manufacturer: 19 a) Avanti AV-257 Icoset, DeNeef Reinforcing Agent; 20 or equal. 21 c. Root Inhibitor 22 1) When roots are present, for joint and lateral connection 23 joint grouting, a root deterrent chemical shall be added to 24 control root re-growth. The quantity of inhibitor shall be as 25 recommended by the manufacturer and approved by 26 Engineer. 27 2) Product Manufacturer: 28 a) Avanti AC-50W; or equal. 29 d. Dye - A manufacturer approved water soluble dye without trace 30 metals may be added to the grout tank(s) for visual confirmation. 31 e. Gel Time Modifier. A gel time extending agent may be used in 32 accordance with the manufacturer's recommendations to extend 33 gel time as necessary. 34 f. Freeze/Thaw - In those lines where the grouting material may be 35 exposed to a freeze-thaw cycle, ethylene glycol or other Engineer 36 approved additive shall be used to prevent chemical grout cracking 37 once set. 38 g. When using non soluble additives the grout tanks must have 39 mechanical mixing devices to keep the additive in suspension and 40 maintain a uniform solution of grout and additive. 41 2.02 EQUIPMENT 42 A. Basic equipment shall consist of a closed circuit television system, necessary 43 chemical sealant containers, pumps regulators, valves, hoses, etc., and joint 44 sealing packers for the various sizes of sewer pipes. Project#10876061 33 01 30.61-4 Sanitary Sewer Testing and Sealing ®2019 MSA Professional Services,Inc. 1. The same equipment shall be used for both testing and sealing sewer pipe. 2. The equipment shall be capable of performing the specified operations in pipes where flows do not exceed the maximum pipe flow capacity for joint sealing. 3. Provide all other equipment required to facilitate the work. 6 B. Packer shall have a cylindrical shape and have cables attached at each end to 7 facilitate pulling it through the pipe section. 8 1. Packer shall be constructed in a manner to allow a restricted amount of 9 sewage flow and shall not completely halt flow within the pipe section. 10 2. Packer diameter shall be such to facilitate the work and pass minor 11 irregularities of pipe deflection and alignment. 12 C. The device for testing lateral connections shall consist of inflatable mainline end 13 elements and a lateral grouting plug that creates a void area extending beyond the 14 main connection. Whenever possible, use a lateral grouting plug sized to match 15 the diameter of the lateral being grouted with an effective sealing length of at least 16 36-inches. 17 PART 3 CONSTRUCTION METHODS 18 3.01 EXAMINATION 19 A. Examine tapes/reports of condition of pipe interior before starting work. 20 3.02 INSTALLATION PREPARATION 21 A. Cleaning: 22 1. The Contractor shall remove all internal debris from the sewer line which 23 would interfere with the testing and sealing of the pipe section. 24 2. The Contractor shall televise the sewer lines after cleaning. If the 25 television inspections shows the cleaning to be unsatisfactory, the 26 Contractor shall re-clean and re-televise the sewer line until it is 27 acceptable to the Engineer. The cost for this work shall be considered 28 incidental to the cost of rehabilitation work. 29 3. Tree roots in sections to receive liner installation shall be removed from 30 pipe joints/cracks and/or laterals using a mechanical trenchless cutter. 31 4. Mineral deposits in sections to receive liner installation shall be removed 32 from the pipe joints/cracks and/or laterals using a mechanical trenchless 33 equipment. 34 B. Roots and Loose Debris in Lateral Connections: 35 1. Remove all roots and loose debris from laterals connected to manhole for 36 the length of lateral to be tested/grouted. 37 2. During mainline sewer cleaning or joint testing, document all lateral 38 connections containing roots, mineral deposits or obstructive conditions 39 that are either (a) greater than fine roots or (b) of a nature to prevent Project#10876061 33 01 30.61-5 Sanitary Sewer Testing and Sealing ®2019 MSA Professional Services,Inc. testing and sealing of connection. For each such connection, submit a screen shot image clearly showing the extent of roots or obstructive condition to the Engineer. Submit images in electronic format, labeled and 4 organized in a manner to easily retrieve the image for the lateral connection in question. The list of lateral connections with roots shall 6 include upstream and downstream manhole numbers and stationing. 7 Engineer will review the list of lateral connections containing roots and 8 obstructions and direct Contractor as to which laterals are to be (a) cleaned 9 and grouted, (b) grouted without cleaning — in which case such lateral 10 connection would be excluded from warranty testing, or (c) removed from 11 the scope of work — in which case no payment for such lateral will be 12 made. 13 C. Inspection of the Sewer Pipeline: 14 1. Inspection of pipelines shall be performed by experienced personnel 15 trained in identifying breaks, obstacles and service connections by closed 16 circuit television. The interior of the pipeline shall be carefully inspected 17 to determine the location of any conditions which may prevent proper 18 rehabilitation of the pipeline, and it shall be noted so that these conditions 19 can be corrected. A video (on DVD) and suitable log shall be kept for 20 later reference by the Engineer. 21 D. Maintaining Sanitary Sewer Service: 22 1. The Contractor shall provide adequate equipment and facilities to provide 23 bypass pumping for all elements of work requiring interruption to flow in 24 the sanitary sewer. Provide backup or standby capabilities satisfactory to 25 the Owner. The Contractor shall be responsible for damages to private or 26 public property due to sewer backup while controlling sewage flow. Under 27 no circumstances, will bypassing of untreated wastewater to any storm 28 drainage facility or surface water course be allowed. The Contractor shall 29 notify the Owner seven (7) days in advance of sewer sections which will 30 not be useable in order to allow time for the Owner to notify residents. 31 Interruptions of service shall be limited to eight (8) hours. Interruptions 32 shall then be verified at least 24 hours in advance. 33 2. All costs for flow control, temporary pumping, etc., shall be considered 34 inclusive to associated work performed under the contract. 35 E. Line Obstructions: 36 1. It shall be the responsibility of the Contractor to clear the line of 37 obstructions such as solids, roots, protruding service connections and 38 collapsed pipe that will prevent the insertion of the liner. 39 2. If inspection reveals an obstruction that cannot be removed by 40 conventional sewer cleaning equipment, then the Contractor shall make a 41 point repair excavation to uncover and remove or repair the obstruction 42 per Owner and Engineer approval. Point repair excavation shall be 43 approved in writing by the Owner's representative prior to the Project#10876061 33 01 30.61-6 Sanitary Sewer Testing and Sealing 0 2019 MSA Professional Services,Inc. commencement of the work and shall be paid for a determined unit price bid for point excavation. F. The Contractor shall contact the owner/residents within the project limits to inform them of temporary sewer service disconnections and any instructions or 5 information deemed necessary for the successful performance of the work. 6 3.03 LATERAL CONNECTION TESTING PROCEDURE 7 A. Lateral connection joint testing pressure shall be equal to 0.5 psi per vertical foot 8 of pipe depth plus 2 psi; however, test pressure shall not exceed 10 psi without 9 approval of the ENGINEER. 10 B. Air testing lateral connections shall be accomplished by isolating the area to be 11 tested with the lateral connection packer and by applying positive pressure into 12 the isolated void area. A pan and tilt camera shall be used to position the lateral 13 packer for laterals directly connected to the mainline sewer. The lateral bladder 14 shall be inverted from the mainline assembly into the lateral pipe and inflated. 15 The mainline elements shall then be inflated to isolate the lateral connection and 16 the portion of the lateral to be tested. A sensing unit shall monitor the pressure of 17 the packer void and will accurately transmit a continuous readout of the void 18 pressure to the control panel at the grouting truck or to a pressure gauge on the 19 packer recorded by the CCTV camera. 20 C. The test procedure will consist of applying a controlled air pressure into each 21 isolated void area. Air shall then be slowly introduced into the void area until a 22 pressure equal to or greater than the required test pressure, but in no cases greater 23 than 2 psi above the required test pressure, is observed on the pressure monitoring 24 equipment. Once the designated pressure in the isolated void is displayed on the 25 meter of the control panel, the application of air pressure will be stopped and a 15 26 second waiting period will commence. The void pressure will be observed during 27 this period. If the void pressure drop is greater than 2.0 psi within 15 seconds, the 28 lateral shall be considered to have failed the air test and shall be grouted and 29 retested. 30 D. After completing the air test for each individual lateral specified herein, deflate 31 the lateral packer, with the void pressure meter continuing to display void 32 pressure. If the void pressure does not drop to 0.0 +/- 0.5 psi, the equipment shall 33 be adjusted to provide a zero void pressure reading at the monitor. 34 3.04 GROUTING - GENERAL 35 A. Grout all joint and lateral connections that failed the pressure test by the injection 36 method. This shall be accomplished by forcing grout through a system of pumps 37 and hoses into and through the joints of the sewer from the packer within the 38 sewer pipe. Remove excess grout from pipe and laterals. Excess grout shall be 39 defined as a thickness of grout that given its location, size and geometry, could Project#10876061 33 01 30.61-7 Sanitary Sewer Testing and Sealing ®2019 MSA Professional Services,Inc. cause a blockage. Flush or push forward to the next downstream manhole, remove from the sewer system, and properly dispose of excess grout. 3 3.05 LATERAL CONNECTION SEALING FROM THE MAINLINE BY PACKER INJECTION GROUTING 5 A. Lateral connection sealing begins if the lateral connection does not pass the air 6 test, shows evidence of leakage, has been successfully cleaned to remove roots, or 7 where Contractor has been directed. The lateral packer shall remain in position 8 during the pressure test, thus maintaining the isolated void. Pressure inject grout 9 through the lateral packer into the annular space between the lateral grouting plug 10 and the lateral pipe. 11 B. When pumping grout, operate the pumps until the mixed grout has flowed 12 through any joint failure, through any annular space, and into the surrounding 13 soil; gelled or filled the available void space; formed a cohesive seal stopping 14 further grout flow; and minimum of 8 psi back pressure is achieved while 15 pumping. Continue pumping until a point where there is a sudden increase in the 16 void pressure. If the grout pumped exceeds 1 gallon per foot of lateral bladder 17 plus 3 gallons, it will be suspected that there are significant voids on the outside 18 of the pipe or that the packer is not properly sealed. Check that the packer is 19 sealed properly. If it is, modify grouting procedure to stage grouting by pumping 20 additional grout equivalent tot gallon plus 0.25 gallon per foot of lateral bladder, 21 waiting 1 full minute, and retesting. The maximum number of stages shall not 22 exceed two stages unless authorized by Engineer. 23 C. Grout lateral connection 36-inches from connection to mainline sewer, or as 24 indicated within the Bid Schedule. 25 D. Upon completion of the lateral connection sealing procedure, deflate the lateral 26 bladder, re-inflate and air test the lateral connection a second time to confirm the 17 sealing of the connection in accordance with the air testing procedure. If the 28 lateral connection fails this air test, repeat the grouting procedure at no additional 79 cost to the Owner. 30 E. Confirm lateral flow after sealing of each lateral connection. If a grout blockage 31 exists, the Contractor shall immediately clear the lateral at no additional cost to 32 the Owner. Blockages in the lateral that are not the result of grouting operations 33 shall not be the responsibility of the Contractor. 34 3.06 RESIDUAL SEALING MATERIAL 35 A. Residual sealing materials that extend into the pipe, reduce the pipe diameter, or 36 restrict the flow shall be removed from the joint and disposed of by the Contractor 37 at an approved site. The sealed joints shall be left reasonably "flush" with the 38 existing pipe surface. If excessive residual sealing materials accumulate in the Project#10876061 33 01 30.61-8 Sanitary Sewer Testing and Sealing 0 2019 MSA Professional Services,Inc. pipe, and/or if directed by the Owner or the Owner's Authorized Representative, the pipe section shall be cleaned to remove the residual materials. 3.07 FLOW CONTROL A. To effectively conduct sealing operations, it may be necessary to provide for flow 5 control or pumping of sewage flows. The Contractor shall be responsible for 6 providing the means and equipment for such flow control or pumping. The 7 Contractor shall be responsible for damages to property due to sewer backup 8 while controlling sewage flow. All costs for flow control, temporary pumping, 9 etc., shall be included in the unit prices bid for associated work scheduled. 10 B. When sewer line flows are above the minimum requirements (generally not more 11 than 1/4 of the pipe diameter) or inspection of the complete periphery of the pipe 12 is necessary to effectively conduct the sealing operations, one or more of the 13 following methods of flow control shall be used at no extra cost to the Owner. 14 1. Plugging or Blocking. A sewer line plug shall be inserted into the line at a 15 manhole upstream from the section to be tested and/or sealed. The plug 16 shall be so designed that all or any portion of the sewage flows can be 17 released. Flows shall be restored to normal or not more than 1/3 of the 18 pipe diameter during the joint testing and joint sealing operation. 19 2. Pumping and Bypassing. Where pumping is required, in the opinion of 20 the Engineer, to assure completion of the sealing work, the Contractor will 21 be required to furnish pumping equipment, conduits, etc. Under no 22 circumstances will bypassing of untreated wastewater to any storm 23 drainage facility or surface water course be allowed. 24 3.08 MANHOLE CONNECTIONS 25 A. At the connection to the manhole, provide a watertight seal between the pipe and 26 manhole. 27 3.09 RECORDS 28 A. Complete records shall be kept of joint sealing performed in each section. The 29 records shall identify the section in which the sealing was done, the location of 30 each joint sealed, and the joint sealing verification results. Two neatly bound sets 31 of these records shall be delivered to the Owner at project completion. 32 3.10 WARRANTY TESTING 33 A. Pressure test 10% of the sewer laterals which have been previously sealed. 34 Testing shall be done no sooner than 11 months but within one year after laterals 35 were originally sealed. 36 1. Laterals to be tested will be selected by the Owner. Laterals that fail the 37 re-test will be re-sealed. If 10% or more of the re-tested laterals fail, an 38 additional 15% of the entire project will be re-tested and re-sealed as Project#10876061 33 01 30.61-9 Sanitary Sewer Testing and Sealing C 2019 MSA Professional Services,Inc. needed. If more than 10% fail the second re-test then all laterals involved in the project will be re-tested and sealed as necessary at no additional cost to the Owner. 3.11 GUARANTEE 5 A. All sewer pipe joint sealing work performed shall be guaranteed against faulty 6 workmanship and/or materials for a period of one year after the completion of the 7 work. 8 3.12 TELEVISING EXAMINATION: 9 A. Televise interior of pipe after completion of Work and provide three copies of 10 DVD or flash drive video to ENGINEER. 11 B. Camera shall have full pan and tilt capabilities, have a minimum resolution of 650 12 lines and provide a color picture. 13 C. DVD video shall include software allowing quick "point and click" referencing of 14 repaired pipe sections. 15 3.13 CLEANING AND RESTORATION 16 A. At completion of work, remove rubbish, debris, dirt, equipment and excess 17 material from site. Clean and restore adjacent surfaces soiled by and during 18 course of work. 19 PART 4 MEASUREMENT AND PAYMENT 20 4.01 GENERAL 21 A. All work specified herein shall be considered for payment in accordance with the 22 project specifications. 23 4.02 TESTING AND SEALING 24 A. Testing and Sealing, Inclusive. When no quantity is provided, measurement for 25 testing and sealing sanitary sewer shall be considered inclusive to the 26 rehabilitation work of specific diameter. 27 B. Grout Seal Lateral Connection, Test, Grout to 36-inches, Each. Measurement for 28 grouting sealing of a lateral connection shall be for each lateral completed as 29 indicated. Project#10876061 33 01 30.61-10 Sanitary Sewer Testing and Sealing 0 2019 MSA Professional Services,Inc. ! 4.03 MANHOLE CONNECTIONS A. Manhole Connections. Inclusive, When no quantity is provided, manhole connections testing and sealing shall be considered inclusive to Manhole Joint Sealing, Special. 5 4.04 MISCELLANEOUS 6 A. Cutting Tree Roots, Inclusive. When no quantity is provided, cutting tree roots 7 shall be considered inclusive to the rehabilitation work. 8 B. Ream Mineral Deposits, Inclusive. When no quantity is provided, reaming 9 mineral deposits shall be considered inclusive to the rehabilitation work. 10 C. Heavy Clean and Remove Debris, Inclusive. When no quantity is provided, heavy 11 clean and removing debris shall be considered inclusive to the rehabilitation work. 1? END OF SECTION Project#10876061 33 01 30.61-11 Sanitary Sewer Testing and Sealing 0 2019 MSA Professional Services,Inc. SECTION 33 01 30.72 LINING SEWERS 3 PART 1 GENERAL 4 1.01 APPLICABLE PROVISIONS 5 1.02 APPLICABLE PUBLICATIONS 6 A. The following publications of the issues listed below, but referred to thereafter by 7 basic designation only, form a part of this Specification to the extent indicated by 8 the reference thereto. 9 1. American Society for Testing and Materials (ASTM), Annual Book of 10 ASTM Standards: 11 a. ASTM D543/D3861 - Test Method for Resistance of Plastics to 12 Chemical Reagents, Current Edition. 13 b. ASTM D638 - Test Method for Tensile Properties of Plastics, 14 Current Edition. 15 c. ASTM D790 - Test Method for Tensile Properties of Unreinforced 16 and Reinforced Plastics and Electrical Insulating Materials, 17 Current Edition. 18 d. ASTM D1784 - Specification for Rigid Poly (Vinyl Chloride) 19 (PVC) Compounds and Chlorinated Poly (Vinyl Chloride) (CPVC) 20 Compounds, Current Edition. 21 e. ASTM D2122 - Method for Determining Dimensions of 22 Thermoplastic Pipe and Fittings, Current Edition. 23 f. ASTM D2990 — Standard Test Methods for Tensile, Compressive, 24 and Flexural Creep and Creep Rupture of Plastics, Current Edition. 25 g. ASTM D3034 - Specification for Type PSM Poly (Vinyl Chloride) 26 (PVC) Sewer Pipe and Fittings, Current Edition. 27 h. ASTM D5813 — Standard Specification for Cured-in-Place 28 Thermosetting Resin Sewer Piping Systems. 29 i. ASTM F1216 - Rehabilitation of Existing Pipelines and Conduits 30 by Inversion and Curing of a Resin-Impregnated Tube, Current 31 Edition. 32 1.03 DESCRIPTION OF WORK 33 A. Work under this section shall cover all materials, equipment, labor and 34 supervision necessary to install a continuous, tight fitting, watertight liner inside 35 an existing sanitary sewer as indicated on the contract drawings and as specified 36 herein. Project#10876061 33 01 30.72-1 Lining Sewers 0 2019 MSA Professional Services,Inc. 1.04 RELATED WORK ELSEWHERE 1.05 SUBMITTALS A. Product Data: 1. Manufacturer's product literature, application and installation 5 requirements for materials used in liner. 6 2. Manufacturer's product certification for materials used in liner. 3. Liner Pipe Thickness Design. 8 a. Liner Pipe Thickness Design shall be in accordance with Appendix 9 XI of ASTM F1216 for Fully Deteriorated Gravity Pipe 10 Condition. At minimum, the following variables shall be used by 11 supplier/installer for liner thickness design: 12 1) Height of Water Above Pipe = 12' 13 2) Height of Soil Above Pipe = 12' 14 3) Live Load shall be AASHTO HS-20 for roadway and 15 easement areas 16 4) Soil Type shall be clay with appropriate Modulus of soil 17 reaction 18 5) The minimum ovality of the host pipe shall be 5 percent 19 6) The enhancement factor(K) shall not be great than 7.0 20 7) The minimum safety factor shall be 2.0 21 8) The flexural modulus of elasticity shall be reduced 50% for 22 Cured-in-Place-Pipe to account for long-term effects and 23 used I the design equations EL or long-term product testing 24 data shall be used 25 b. The minimum finished, installed liner thickness shall be no less 76 that 6.0 millimeters, unless otherwise approved by Engineer. 27 c. No liner shall be installed until it has been approved for 28 installation. 29 d. No liner will be approved for installation until liner thickness 30 calculations have been submitted and reviewed for conformance 31 with the specifications and installation requirements. 32 B. Installer: 33 1. List of projects, including location and contact, completed with the 34 Approved Material (minimum 100,000 linear feet). 35 2. Proposed plan for bypassing sewage during liner installation. 36 3. Employees must have proper training and hold current certification for 37 confined space entry to qualify for this project. 38 C. Post Lining Submittals: 39 1. Testing results per Paragraph 3.05. 40 2. Digital recordings and reports (pre and post lining) per Paragraph 3.05. Project#10876061 33 01 30.72-2 Lining Sewers 2019 MSA Professional Services,Inc. 1.06 OPERATION/MAINTENANCE MANUALS AND INSTRUCTIONS (NONE) - 1.07 QUALITY ASSURANCE 3 A. Corrosion: 4 1. Fabricate finished liner from materials which, when cured, will be chemically resistant to withstand internal exposure to domestic sewage. 6 B. Manhole Connections: 7 1. All manhole connections shall be watertight. 8 C. Service Connections: 9 1. All service connections shall be watertight. I0 D. Testing: 11 1. Test finished pipe liner in accordance with Paragraph 3.05. , 12 PART 2 PRODUCTS AND MATERIALS 13 2.01 LINING SYSTEMS 14 A. General. Cured-in-place liners shall meet the applicable requirements for the type 15 of material listed below. 16 1. Approved Lining Materials for the Rehabilitation of Existing Sanitary 17 Sewer Mains. 18 a. Cured-in-Place-Pipe (CIPP) Resin Impregnated Flexible Felt Tube 19 (RI) - U-Liner, Insituform, or equal. 20 2. Other types of materials or processes for cured-in-place lining may be 21 approved by the Engineer upon evaluation of specifications and references 22 supplied by the Contractor. 23 3. Qualifications for Installers of Approved Lining Materials 74 a. The Installer shall have installed a minimum of 100,000 liner 25 feet of the Approved Lining Material. 26 b. Installer's employees must have proper training and hold 27 current certifications for confined space entry to qualify for 28 this project. 29 B. Resin Impregnated Flexible Felt Tube (RI) 30 1. Material for cured-in-place resin impregnated flexible felt tube liner shall 31 meet the requirement of ASTM F1216. 32 2. The RI liner shall have a minimum wall thickness of 6 mm throughout. Project#10876061 33 01 30.72-3 Lining Sewers ®2019 MSA Professional Services,Inc. PART 3 CONSTRUCTION METHODS 2 3.01 EXAMINATION A. Examine tapes of condition of pipe interior before starting work. 4 3.02 INSTALLATION PREPARATION A. Cleaning. The Contractor shall remove all internal debris from the sewer line 6 which would interfere with the installation of the pipe liner. 7 1. The Contractor shall televise the sewer lines after cleaning. If the television inspections shows the cleaning to be unsatisfactory, the 9 Contractor shall re-clean and re-televise the sewer line until it is 10 acceptable to the Engineer. The cost for this work shall be included in the 11 bid price per lineal foot of sewer lining. 12 B. Inspection of the Sewer Line 13 1. Inspection of pipelines shall be performed by experienced personnel 14 trained in identifying breaks, obstacles and service connections by closed 15 circuit television. The interior of the pipeline shall be carefully inspected 16 to determine the location of any conditions which may prevent proper 17 installation of the liner into the sewer line, and it shall be noted so that 18 these conditions can be corrected. Digital files and suitable log shall be 19 kept for later reference by the Engineer. 20 2. Inspection of the sewer line was performed by the Owner prior to the 21 bidding of the project. Copies of the digital files may be used by the 22 Contractor in planning and execution of the work. However, the 23 Contractor will, as part of this project, perform the specified inspection of 24 the existing sewer line. 23 C. Maintaining Sanitary Sewer Service 26 1. The Contractor shall provide adequate equipment and facilities to provide 27 bypass pumping for all elements of work requiring interruption to flow in 28 the sanitary sewer. Provide backup or standby capabilities satisfactory to 29 the Owner. The Contractor shall be responsible for damages to private or 30 public property due to sewer backup while controlling sewage flow. 31 Under no circumstances, will bypassing of untreated wastewater to any 32 storm drainage facility or surface water course be allowed. The 33 Contractor shall notify the Owner seven (7) days in advance of sewer 34 sections which will not be useable in order to allow time for the OWNER 35 to notify residents. Interruptions of service shall be limited to eight (8) 36 hours. Interruptions shall then be verified at least 24 hours in advance. 37 2. All costs for flow control, temporary pumping, etc., shall be considered 38 inclusive to associated work performed under the contract. Project#10876061 33 01 30.72-4 Lining Sewers C 2019 MSA Professional Services,Inc, 1 D. Line Obstructions 1. It shall be the responsibility of the Contractor to clear the line of obstructions such as solids, roots, protruding service connections and collapsed pipe that will prevent the insertion of the liner. 5 2. If inspection reveals an obstruction that cannot be removed by 6 conventional sewer cleaning equipment, then the Contractor shall make a 7 point repair excavation to uncover and remove or repair the obstruction. 8 Point repair excavation shall be approved in writing by the Owner's 9 representative prior to the commencement of the work and shall be paid 10 for at the unit price bid for point excavation. 11 E. The Contractor shall contact the owner/residents within the project limits to 12 inform them of temporary sewer service disconnections and any instructions 13 or information deemed necessary for the successful performance of the work. 14 3.03 INSTALLATION OF THE LINER 15 A. General 16 1. The completed liner shall be continuous over the entire length of each 17 segment (manhole to manhole) and shall be free of defects such as foreign 18 inclusions, dry spots, pinholes and delamination. The completed liner 19 pipe shall be leak proof and a tight seal shall be provided between the liner 20 and manhole wall. 21 2. Prior to lining, Contractor shall provide advance notice to all City property 22 owners outlining safety concerns due to lining activities. Information on 23 the project work, the schedule, and potential hazards (including hazardous 24 materials), preventative actions to take place, before project begins, and if 25 materials enter a property owners building of domicile. Contractor contact 26 information shall be submitted to OWNER. Contractor is expected to 27 respond as quickly as possible to all concerns relative to OWNER notices 28 that residents are experiencing issues with any of the aforementioned 29 concerns. 30 B. Cured-in-Place Pipe Liner 31 1. The Contractor shall furnish and install the cured-in-place liner and 32 re-establish sewer service in accordance with the procedure required by 33 the supplier of the liner. 34 2. Prior to commencing work, the Contractor shall furnish the Engineer with 35 a copy of the supplier's recommended installation procedure and written 36 certification that the liner material conforms to the requirements of these 37 specifications. 38 a. Preparation of Liner: 39 1) Resin Impregnation(CIPP): 40 a) Designate location where uncured resin in original 41 containers and unimpregnated liner will be vacuum Project#10876061 33 01 30.72-5 Lining Sewers ®2019 MSA Professional Services,Inc. impregnated prior to installation. Installer shall allow engineer to inspect materials and "wet out" procedure. -' b) Resin and catalyst system compatible with requirements of this method shall be used. 6 Quantities of liquid thermosetting materials shall be 7 to manufacturer's standards to provide lining 8 thickness required. 9 c) Liner tube shall be impregnated with resin not more 10 than 24 hrs. before proposed time of installation and 1 1 stored out of direct sunlight at temperature less than 12 40 degrees Fahrenheit (4 degrees Celsius) 13 d) Transport resin impregnated liner to site 1 immediately prior to inversion in suitable light- 15 proof container with temperature maintained below 16 40 degrees Fahrenheit (4 degrees Celsius). 17 2) Insertion of Liner(CIPP): 18 a) Insert liner through an existing manhole or other 19 access by means of an inversion process and 20 application of hydrostatic head sufficient to fully 21 extend liner to next designated manhole or 22 termination point or by means of winching the liner 23 through the last pipe to the next designated manhole 24 or termination point. Lubricant may be used. 25 b. Curing Liner (CIPP) 26 1) After installation is complete, provide heat source and 27 recirculation equipment. Equipment shall be capable of 28 delivering hot water or steam throughout section to 29 uniformly raise the skin temperature above that which is 30 required to effectively cure resize and cure the liner. 31 2) Provide heat source with suitable monitors to gauge 32 temperature of incoming and outgoing water/steam supply. 33 Place second gauge between impregnated liner and pipe 34 invert at remote manhole to determine temperatures during 35 cure. 36 a) Initial cure shall be complete when inspection of 37 exposed portions of liner to be hard and round and 38 remote temperature sensor indicates that 39 temperature has reached required levels. 40 b) Cool hardened liner to temperature below 100 41 degrees F. Cool down by introduction of cool water 42 or air into the liner. In the case of CIPP care shall 43 be taken in release of static head so that vacuum 44 will not be developed that could damage newly 45 installed liner. Project#10876061 6Lining Sewers 02019 MSA Professional Services,Inc. 33 01 30.72-" 3. Sealing Liner at Manholes: Hydrophilic end seals shall be installed, such as insignia hydrophilic end seal. The installation of end seals shall be incidental to the cured in place lining. 3.04 SERVICE CONNECTIONS 5 A. The Contractor shall be responsible for determining which service connections are 6 active for reconnection purposes. The Contractor shall confirm with the OWNER 7 which services to abandon and not reinstate. 8 B. Service Connections 9 1. Locations: 10 a. Determine service connection locations from television inspection 11 video tapes completed prior to lining. 12 2. Reaming Protruded Lateral Taps: 13 a. Reaming protruded lateral taps, use care to prevent damage to the 14 sewer main. 15 b. Protruded lateral taps shall be reamed flush to the inside surface of 16 the sewer pipe using a trenchless cutter. 17 3. Reinstatements: 18 a. Reinstate and reconnect service connections unless service 19 connection is deemed to be inactive. 20 b. Reconnect services without excavation by television camera and 21 cutting device that re-establishes services for minimum of 95% of 2'— the flow capacity. 23 c. Lateral reinstatements shall be brushed/buffed clean and free of 24 any rough or jagged edges. 25 d. Sanitary services shall not be out of service for more than 8 hours 26 during lining process. 27 e. Following reinstatement, lateral shall be grouted to provide a water 28 tight seal with chemical grout. Payment for lateral connection 29 grouting shall be at the respective unit price bid. 30 4. Service Connection Testing: 31 a. Proof via air test or other approved method each reinstated service 32 lateral connection. 33 b. Active leaks at reinstated service lateral connections and reinstated 34 service connections which do not pass a proof test shall be sealed 35 by chemical grout or other method approved by the Engineer. 36 C. Manhole Connections 37 1. Reconstruct benches and channels in manholes with grout to match new 38 invert elevations. 39 2. At the connection to the manhole, provide a watertight seal between the 40 host pipe and liner pipe. All liner ends shall be sealed with Insignia 41 Hydrophilic End Seal Sleeve, approved by Engineer and shall not leak. Project#10876061 33 01 30.72-7 Lining Sewers ®2019 MSA Professional Services,Inc. The cost for this work shall be included in the bid price per lineal foot of sewer lining. 3 3.05 TESTING AND ACCEPTANCE 4 A. General. The following tests shall be performed by the Contractor in the presence 5 of the Engineer. The Contractor shall be responsible for providing all labor, 6 materials and equipment for the testing. 7 1. Finished Liner: 8 a. Liner shall be continuous over entire length of insertion run and be 9 as free as commercially practicable from visual defects such as 10 foreign inclusions, dry spots, pinholes and delamination. 11 b. Liner shall conform to shape of pipe existing before installation 12 and not be out of round by more than 15%. 13 2. Liner Thickness: 14 a. Cured liner shall be accurately measured at a minimum of eight 15 points at each manhole and average wall thickness shall not be less 16 than final thickness specified. No single point may be less than the 17 specified final thickness. 18 3. Testing: 19 a. CIPP Liners 20 1) Test in accordance with ASTM D790, ASTM D638 and 21 ASTM D5813. Acceptable test results shall meet the 22 requirements of the liner design and product performance 23 data submitted by installer/supplier. 24 2) Specimens tested shall be actual thickness of fabricated 25 liner. Specimens shall be restrained field cured specimens 26 via form pipe in manholes. Up to 5 test location shall be 27 required for this project. 28 3) Do not machine specimen on surface. 29 a) Make test with smooth (inner) face in compression 30 using 5 specimens. 31 4. CCTV Examination: 32 a. Televise interior of pipe after completion of Work and provide 33 three copies of the digital video and inspection log to OWNER or 34 ENGINEER. 35 b. Camera shall have full pan and tilt capabilities, have a minimum 36 resolution of 650 lines and provide a color picture 37 c. DVD or flash drive video shall include software allowing quick 38 "point and click"referencing of repaired pipe sections. 39 5. The cost of this work shall be included in the bid price per lineal foot of 40 sewer lining Project#10876061 8 Lining Sewers ©2019 MSA Professional Services,Inc. 33 01 30.72-" 3.06 CLEANING AND RESTORATION A. At completion of work, remove rubbish, debris, dirt, equipment and excess 3 material from site. Clean and restore adjacent surfaces soiled by and during course of work. 5 PART 4 MEASUREMENT AND PAYMENT 6 4.01 GENERAL 7 A. Sanitary sewer lining shall be paid for at the bid price 8 B. All work specified herein shall be considered in each of the measurement and 9 payment method(s) stipulated. 10 4.02 LINER 11 A. Cured-in-Place Pipe Liner, Linear Foot. Measurement for cured-in-place liner 12 shall be per lineal foot of specific diameter liner installed. Payment shall be made 13 at the contract unit price bid per lineal foot of the respective diameter cured-in- 14 place liner. All costs associated with post-cleaning, post-lining inspection, 15 cleaning, obstruction/root removal, liner installation, sealing, and testing shall be 16 included in the respective unit price bid item for associated liner diameters. 17 4.03 SERVICE CONNECTIONS 18 A. Reinstate Lateral Connection, Each. Measurement for reinstating lateral service 19 connections shall be for each active connection 20 B. Ream Protruding Lateral Tap, Each. Measurement for reaming lateral service 21 break in connection shall be for each protruding lateral tap. 22 END OF SECTION Project#10876061 33 01 30.72-9 Lining Sewers ®2019 MSA Professional Services,Inc. SECTION 33 01 30.73 MANHOLE JOINT SEALING- SPECIAL ENGINEER AMENDMENTS TO SPECIFICATION 33 01 30.7 1.03 A. Work under this section shall cover all materials, equipment, labor and supervision necessary to seal existing sanitary manhole joints that are otherwise... 1.03 B. Seal all visible flowing leaks greater than 10 feet below grade and areas with evil enee •- - •- in the listed manholes under this contract. 3.03 A. Manhole joint sealing includes the following: 1. The sealing of manhole base, wall joints,corbel/cone and chimney of brick 2. The sealing of precast manhole barrel joints,greater than 10 feet below grade and with observed inflow, when general structure sealing is not required. 3.04. A. Manhole structure joint sealing includes the sealing or plugging of the manhole base, wall, corbel/cone and chimney using chemical grout sealants to eliminate leakage. This 3.05 A. At all visible flowing leaks . •: : -. - - . . within the manhole structure 3.05 D For the unit price bid for Sealing Sanitary Manholes Joints,the Contractor shall furnish... 4.01 A Manhole Joint Sealing shall be paid at the bid price in accordance... 4.02 A Manhole Joint Sealing,ye tieal-feott each. Measurement for sanitary sewer manhole joint sealing shall be per venal-feet each joint of specific diameter. Payment shall be made at the contract unit price bid per verge-al-feet each joint of the respective diameter sealed. SECTION 33 01 30.73 MANHOLE SEALING (CHEMICAL GROUTING) PART 1 GENERAL 1.01 APPLICABLE PROVISIONS A. Applicable provisions of Division 01 shall govern work of this section. 1.02 APPLICABLE PUBLICATIONS 8 A. The following publications of the issues listed below, but referred to thereafter by basic designation only, form a part of this Specification to the extent indicated by I 0 the reference thereto. I I 1. American Society for Testing and Materials (ASTM), Annual Book of 12 ASTM Standards: 13 a. ASTM D333 - Standard Test Method for Clear and Pigmented 14 Lacquers, Current Edition. 15 b. ASTM D543 - Test Method for Resistance of Plastics to Chemical 16 Reagents, Current Edition. 17 c. ASTM D638 - Test Method for Tensile Properties of Plastics, 18 Current Edition. 19 d. ASTM D790 - Test Method for Tensile Properties of Unreinforced 20 and Reinforced Plastics and Electrical Insulating Materials, 21 Current Edition. 22 e. ASTM D1693 - Test Method for Environmental Stress-Cracking of 2 Ethylene Plastics, Current Edition. 24 f. ASTM D3362 - Test Method for Purity of Acrylate Esters by Gas 25 Chromatography, Current Edition. 26 g. ASTM D3548 - Standard Specification for Ethyl Acrylate. 27 h. ASTM D3792 - Standard Test Method for Water Content of 28 Coatings by Direct Injection Into a Gas Chromatograph, Current 29 Edition. 30 i. ASTM D5155 - Standard Test Method for Polyurethane Raw 31 Materials Determination of the Isocyanate Content of Aromatic 32 Isocyanates, Current Edition. 33 j. ASTM D6437 - Standard Test Method for Polyurethane Raw 34 Materials: alkalinity in Low-Alkalinity Polyols (Determination of 35 CPR values of Polyols), Current Edition. Project# 10876061Manhole Sealing 3 2007 MSA Professional Services.Inc. 33 01 30.73-1 1.03 DESCRIPTION OF WORK A. Work under this section shall cover all materials, equipment, labor and supervision necessary to seal existing sanitary sewer manholes that are otherwise structurally sound, using various products and methods either singularly or in combination to eliminate infiltration, as indicated on the contract drawings and as specified herein. B. Seal all visible leaks and areas with evidence of leaks (deposits or staining) in the listed manholes under this contract. 1.04 RELATED WORK ELSEWHERE A. Procurement and Contracting Requirements - Division 00 (All Sections) B. Work Restrictions and Provisions - Division 01 12 C. Submittals - Division 01 13 D. Sanitary Sewer Testing and Sealing— Division 33 14 1.05 SUBMITTALS 15 A. Submit such product literature and catalog cuts of materials to be supplied to 16 relate these materials to these specifications. Information shall be in conformance 17 with requirements of Submittals—Division 01 of these specifications. 18 1. Submit manufacturer's material data and application and installation 19 instructions for all products used. 20 2. Provide documentation that the proposed manhole rehabilitation process 21 has a minimum 5 year history for sealing of sanitary sewer manholes on 22 projects of similar size and scope. 23 1.06 OPERATION/MAINTENANCE MANUALS AND INSTRUCTIONS (NONE) 24 1.07 QUALITY ASSURANCE 25 A. Corrosion: 26 1. Chemical sealing materials, when cured, will be chemically resistant to 27 withstand internal exposure to domestic sewage. 28 B. Manhole Connections: 29 1. All manhole connections shall be watertight. Project# 10876061 33 01 30.73-2 Manhole Sealing 2007 MSA Professional Services.Inc. PART 2 PRODUCTS AND MATERIALS 2.01 CHEMICAL SEALING MATERIALS A. The chemical sealing material shall be of a type which has a documented record of satisfactory performance in sewer usage. B. All grouting material shall be delivered to the job site in the original, labeled and 6 unopened containers. C. Contractor shall submit with his bid, the brand name manufacturer of the chemical grout(s) intended for use. The chemical grout(s) selected by the 9 Contractor is subject to the approval of the Engineer. The chemical grout(s) shall be one of the following types: 11 1. Acrylic base gel chemical sealing material — Avanti AV-1 18, or equal. t2 2. Urethane base gel chemical sealing material —Avanti AV-310, or equal. 13 2.02 EQUIPMENT 14 A. Basic equipment shall consist of a closed circuit television system, necessary 15 chemical sealant containers, injection packers, pumps regulators, valves, hoses, 16 etc., and joint sealing packers for the various sizes of sewer pipes. 17 1. The chemical injection pumps shall be equipped with pressure meters that 18 will provide for monitoring pressure during the injection of chemical 19 sealants. 20 2. The equipment shall be capable of performing the specified operations, 21 and when necessary, liquid bypass lines equipped with pressure-regulating 22 bypass valves will be incorporated into the pumping station. 23 B. Provide all other equipment required to facilitate the work. 24 PART 3 CONSTRUCTION METHODS 25 3.01 EXAMINATION 26 A. Examine condition of manhole interior before starting work. 27 3.02 INSTALLATION PREPARATION 28 A. Cleaning: The Contractor shall remove all internal debris from the manhole 29 which would interfere with the sealing. 30 1. The Contractor shall televise the sewer lines after cleaning. If the 31 television inspections show the cleaning to be unsatisfactory, the 32 Contractor shall re-clean and re-televise the sewer line until it is 33 acceptable to the Engineer. The cost for this work shall be included in the 34 bid price per lineal foot of sewer testing and sealing. Project# 10876061 33 C11 30.73-3 Manhole Sealing 2 2007 MSA Professional Services.Inc. B. Inspection of the Manhole: 1. Inspection of manholes shall be performed by experienced personnel trained in identifying leaks and areas with evidence of leaks (deposits or staining). The interior of the manhole shall be carefully inspected to determine the location of any conditions which may prevent proper rehabilitation of the manhole, and it shall be noted so that these conditions can be corrected. A videotape or suitable photographic log shall be kept for later reference by the Engineer. 2. Alternately, inspection of the manholes may be performed by the Owner prior to the bidding of the project. In this case, copies of the reports and photographic records may be used by the Contractor in planning and 12 execution of the work. The Contractor may, at his own expense, perform 13 additional inspection of the existing manholes. 14 C. Maintaining Sanitary Sewer Service: 15 1. The Contractor shall provide adequate equipment and facilities to provide 16 bypass pumping for all elements of work requiring interruption to flow in 17 the sanitary sewer. Provide backup or standby capabilities satisfactory to 18 the Owner. The Contractor shall be responsible for damages to private or 19 public property due to sewer backup while controlling sewage flow. 20 Under no circumstances, will bypassing of untreated wastewater to any 21 storm drainage facility or surface water course be allowed. The 22 Contractor shall notify the Owner seven (7) days in advance of sewer 23 sections which will not be useable in order to allow time for the Owner to 24 notify residents. Interruptions of service shall be limited to eight (8) 25 hours. Interruptions shall then be verified at least 24 hours in advance. 26 2. All costs for flow control, temporary pumping, etc., shall be considered 27 inclusive to associated work performed under the contract. 28 D. The Contractor shall contact the owner/residents within the project limits to 29 inform them of temporary sewer service disconnections and any instructions or 30 information deemed necessary for the successful performance of the work. 31 3.03 GENERAL 32 A. Manhole sealing includes the followings: 33 1. The sealing of the manhole base, walls, corbel/cone and chimney of brick, 34 block, or precast manholes. 35 2. The sealing of precast manhole barrel joints, when general structure 36 sealing is not required. 37 B. The inspection of the various types of work to insure compliance. Project# 10876061 Manhole Sealing ©2007 MSA Professional Services.Inc. 33 01 30.73-4 3.04 MANHOLE STRUCTURE SEALING A. Manhole structure sealing includes the sealing or plugging of the manhole base, walls, corbel/cone and chimney using chemical grout sealants to eliminate leakage. This type of sealing shall be done during high groundwater conditions, unless the points of leakage have been previously identified. 3.05 SEALING PROCEDURE A. At all visible leaks and areas with evidence of leaks within the manhole structure, a hole shall be carefully drilled from within the manhole and shall extend through the entire manhole wall. In cases where there are multiple leaks around the i+ circumference of the manhole, fewer holes may be drilled, providing all leakage is stopped from these holes. B. Grout ports or sealant injection devices shall be placed in these previously drilled i 3 holes in such a way as to provide a watertight seal between the holes and the 1Y injection device. A hose, or hoses, shall be attached to the injection device from 15 an injection pump. Chemical sealing materials, as specified, shall then be 16 pumped through the hose until material refusal is recorded on the pressure gage 17 mounted on the pumping unit or a predetermined quantity of sealant has been 18 injected. Care shall be taken during the pumping operation to insure that 19 excessive pressures do not develop and cause damage to the manhole structure. 20 C. Upon completion of the injection, the ports shall be removed and the remaining 21 holes filled with quick-setting hydraulic mortar and troweled flush with the 22 surface of the manhole walls or other surfaces. The mortar used shall be a non- 23 shrink patching mortar approved by the Engineer. 24 D. For the unit price bid for Sealing Sanitary Manholes, the Contractor shall furnish 25 all materials, labor, and equipment to complete all work as specified. The 26 diameter of the manholes to be sealed are as listed in the Proposal. The 27 Contractor shall be paid for all joints successfully sealed and retested that initially 28 failed the pressure testing. 29 E. It is realized that this sealing method may only be used on manholes in sound 30 physical condition. When large cracks or chips or other defects are evident, 31 sealing may be undertaken where the defect is small enough to allow proper 32 sealing using the equipment and materials employed and satisfactory results 33 which will meet or exceed intended results and performance. Project# 10876061 33 01 30.73-5 Manhole Sealing c 2007 MSA Professional Services,Inc. 3.06 RESIDUAL SEALING MATERIAL A. Residual sealing materials that extend into the manhole, reduce the manhole diameter, or otherwise result in an obtrusion shall be removed. The sealed manhole shall be left reasonably "flush" with the existing adjacent surface. If excessive residual sealing materials accumulate on the bench, and/or if directed by the Owner or the Owner's Authorized Representative, the manhole section shall be cleaned to remove the residual materials. Y 3.07 FLOW CONTROL A. To effectively conduct sealing operations, it may be necessary to provide for flow control or pumping of sewage flows. The Contractor shall be responsible for providing the means and equipment for such flow control or pumping. The Contractor shall be responsible for damages to property due to sewer backup 1; while controlling sewage flow. All costs for flow control, temporary pumping, 1 1 etc., shall be included in the unit prices bid for associated work scheduled. 15 B. When sewer line flows are such that manhole surcharging is taking place which 16 precludes proper conditions for inspection of the complete periphery of the 7 manhole and effectively conduct the sealing operations, one or more of the 18 following methods of flow control shall be used at no extra cost to the Owner. 19 1. Plugging or Blocking: A sewer line plug shall be inserted into the line at a 20 manhole upstream from the manhole to be sealed. The plug shall be so 2 I designed that all or any portion of the sewage flows can be released. 22 2. Pumping and Bypassing: Where pumping is required, in the opinion of 23 the Engineer, to assure completion of the sealing work, the Contractor will 24 be required to furnish pumping equipment, conduits, etc. Under no 25 circumstances will bypassing of untreated wastewater to any storm 26 drainage facility or surface water course be allowed. 27 3.08 RECORDS 28 A. Complete records shall be kept of each manhole. The records shall identify the 29 section in which the sealing was done, the location of each joint sealed, and the 30 joint sealing verification results. Two neatly bound set of these records shall be 31 delivered to the Owner at project completion. 32 3.09 RE-TESTING AND ACCEPTANCE 33 A. After the specified sealing work has been completed, the manholes shall be 34 visually inspected by the Contractor (as required) in the presence of the Owner's 35 Authorized Representative or the Engineer for acceptance. Project# 10876061 33 01 30.73-6 Manhole Sealing it 2007 MSA Professional Services,Inc. B. A verification inspection shall be done no sooner than 11 months but within the -' one-year guarantee (within one-year after the originally sealing work was completed). 1. All sealed manholes shall also be reinspected for leaks at the 11 months stage in the presence of the Owner's Authorized Representative or the Engineer. This shall constitute quality assurance/quality control for the work. 2. All leaks shall be resealed, as necessary, at no cost to the Owner. 3.10 GUARANTEE A. All manhole sealing work performed shall be guaranteed against faulty ; 1 workmanship and/or materials for a period of one year after the completion of the work. 13 3.11 MANHOLE CONNECTIONS 14 A. At the connection to the manhole, provide a watertight seal between the pipe and 15 manhole. 16 3.12 PHOTOGRAPHIC EXAMINATION 17 A. Televise or photograph interior of manhole after completion of Work and provide 18 evidence to OWNER. 19 3.13 CLEANING AND RESTORATION 20 A. At completion of work, remove rubbish, debris, dirt, equipment and excess 21 material from site. Clean and restore adjacent surfaces soiled by and during 22 course of work. 23 PART 4 MEASUREMENT AND PAYMENT 24 4.01 GENERAL 25 A. Manhole sealing shall be paid for at the bid price in accordance with one of the 26 following methods, unless indicated otherwise in the Bid Schedule or Special 27 Procedures - Division 01. 28 B. All work specified herein shall be considered in each of the measurement and 29 payment method(s) stipulated, unless indicated otherwise in the Bid Schedule or 30 Special Procedures - Division 01. Project# 10876061 Manhole Sealing �2007 MSA Professional Services.Inc. 33 01 30.73-7 4.02 MANHOLE SEALING A. Manhole Sealing. Vertical Foot. Measurement for sanitary sewer manhole sealing shall be per vertical foot of specific diameter. Payment shall be made at the contract unit price bid per vertical foot of the respective diameter sealed. 4.03 MANHOLE CONNECTIONS A. Manhole Connections, Inclusive. When no quantity is provided, manhole connections sealing shall be considered inclusive to sanitary sewer manhole sealing, unless otherwise indicated in the Bid Schedule for Special Procedures - 9 Division 01. END OF SECTION Project# 10876061 Manhole Sealing 2007 MSA Professional Services.inc. 33 01 30.73 -8 3 b Specification for External Manhole Chimney Seal Part 1 — General 1.01 Scope This section includes the materials and procedures required to provide the external pipe sealing of riser donuts and manhole frames in precast concrete manholes. The sealing shall be accomplished via the installation of an external wrap sealing system. 1.02 Work Required A. Precast Manholes —An external chimney sealing system, meeting the requirements of this specification shall be used to seal the chimney section of manholes. 1.03 Definitions A. Joints — the interface between doughnut risers, the conical manhole section, and the frame. B. Chimney Joint Sealing —The means of sealing a leaking or a defective interface in the manhole chimney by the installation of an external mechanical sealing system which bridges the joint to prevent infiltration. C. Approved Equal —A product that matches or exceeds the specified material, performance, and design life and is approved by ENGINEER. 1.04 System Description A. The internal joint sealing system selected shall be designed to have a minimum 50-year design life. B. The external chimney seal shall prevent infiltration into the manhole at the many interfaces in the manhole chimney. An external chimney seal is required regardless of evidence or lack of evidence of previous leaks at the interfaces. 1.05 Submittals A. The Contractor shall submit manufacturer's information that demonstrates the proposed product meets the requirement of Section 1.04 A and B and Section 2.01 A. 1.06 Acceptance Testing A. Manhole chimney sealing shall be visually inspected after installation for proper complete adhesion and proper positioning of the wrap to seal all interfaces, beginning at the manhole conical section /first doughnut riser interface to the frame / doughnut riser interface. There shall be no areas where adhesion is not complete or lose. Any observed void or incomplete adhesion of the wrap shall be considered having to fail acceptance testing and the chimney seal shall be reworked and inspected at no additional expense to the OWNER. Because these manholes that are to be sealed are existing and active, additional testing that includes vacuum testing or exfiltration testing is not feasible. Each and every manhole chimney that is sealed shall be visually inspected. Part 2 — Products 2.01 External Chimney Seal System A. An external chimney joint seal system shall consist of wrapping the manhole chimney with an external rubber sleeve. The sleeve shall be made of stretchable, self-shrinking, intra-curing halogenated based rubber with a minimum thickness of 30 mils. The backside of each unit shall be coated with a cross-linked reinforced butyl adhesive. The butyl adhesive shall be a non- hardening sealant, with a minimum thickness of 30 mils. The seal shall be designed to stretch around the chimney and overlap the previous placed seal in a shingle type installation. The application shall form a continuous rubber seal that applies inward pressure on the protected chimney for the life of the application. The first application of the seal shall effectively seal the interface between the manhole conical section and the first doughnut riser. The last application of the seal shall effectively seal the interface between the top doughnut section and the manhole frame. The last application of the seal shall be trimmed in such a manner as to fit and overlap the manhole flange, including the manhole flange reinforcement tabs. The seal wrap width may be 9 or 12 inches. 2.02 Preparation A. The Contractor shall use pressure washing, scrubbing, wire brushing, and/or compressed air to clean the exterior of the existing manhole chimney. The surface of the exterior manhole chimney shall be free of loose dirt, deteriorated mortar, and old mastic or sealant. Prior to applying the rubber seal, the exterior of the manhole chimney shall be dry. 2.03 Repair Mortar A. If the manhole chimney material has flaws in the concrete that will prevent effective sealing, the flaws shall repaired with mortar, or the doughnut rings shall be replaced. Repair mortar shall be a single component, ready to use with water, high strength, non-shrink polymer modified cementitious patching mortar designed for horizontal, vertical, and overhead use. Repair mortar shall not contain calcium chloride, added gypsum, metallic particle, lime, or high alumina cements. Compressive strength shall conform to ASTM C-109 7 day strength of at least 4000 psi. Flexural Strength shall conform to ASTM C-348 7-day strength of at least 700 psi Part 3 — Execution 3.01 General A. Maintain manhole service throughout the duration of the project. B Provide 48 hours advance notice to ENGINEER prior to start of work. 3.02 Qualifications A. The Contractor shall demonstrate during the bidding process that they have a successful history of sanitary manhole installations. 3.03 Installation A All work to be performed shall be in strict conformance to these specifications and manufacturer's requirements. a. The Contractor is responsible for verifying tne height and outer diameter of each manhole chimney to be sealed. C. The Contractor shall inspect each manhole chimney to be sealed. If concrete repairs are required prior to sealing. those repairs shall be made as necessary. If repairs are not feasible, the chimney doughnut risers shall be replaced. Uneven interfaces may be leveled and smoothed with repair mortar. D. The Contractor shall inspect the concrete surface of the exterior of the manhole chimney for scale, mineral deposits, debris, dirt, asphalt, or concrete imperfections that would interfere with the successful installation of the seal. The Contractor shall be responsible to ensure all surfaces under the sealing area behind the sealing bands are clean, reasonably smooth, and free of any defects that would prevent the rubber sleeve from achieving a watertight seal. Repair mortar meeting the requirements of Section 2.03 shall be used to repair any defects and provide an adequate surface for the sleeve to compress against. Part 4 — Measurement and Payment 4.01 The External Chimney Seal shall be paid at the contract unit price bid per manhole chimney. The unit cost shall include the cost of furnishing and installing an external rubber wrap, all necessary surface preparation work, the removal of the existing frame and lid, and the installation of the new manhole fame and lid. Specification for Internal Manhole Joint Seal Part 1 — General 1.01 Scope This section includes the materials and procedures required to provide the internal sealing of joints in precast concrete manholes. The sealing shall be accomplished via the installation of a mechanical joint sealing system. 1.02 Work Required A. Precast Manholes —An internal joint sealing system, meeting the requirements of this specification shall be used to seal the joint area between two or more barrel sections of the manhole if there is evidence (i.e. staining, observed flowing of clear water, or joint wetness) of infiltration occurring of having occurred in the past. 1.03 Definitions A. Joints — Means of connecting precast manhole wall sections to reach a specific elevation or grade. B. Manhole Joint Sealing —The means of sealing leaking or defecting manhole wall joints(s) by the installation of a mechanical sealing system which bridges the joint to prevent infiltration. C. Approved Equal —A product that matches or exceeds the specified material, performance, and design life and is approved by ENGINEER. 1.04 System Description A. The internal joint sealing system selected shall be designed to have a minimum 50-year design life. B. The internal joint seals shall prevent infiltration into a manhole at pressures up to 22 feet of head. Internal joint seals shall be required if the manhole barrel joint has current infiltration or exhibits evidence of past infiltration. Evidence of past infiltration includes staining that is indicative of seeping water or current wetness limited to joint. At depths greater than 14 feet below grade, if flowing infiltration is observed the Contractor shall seal the joint utilizing specification XXXX. 1.05 Submittals A. The Contractor shall submit manufacturer's information that demonstrates the proposed product meets the requirement of Section 1.04 A and B and Section 2.01 A, B, and C. 1.06 Acceptance Testing A. Manhole barrel joints that are sealed shall be visually inspected after installation for proper positioning and tightness against the manhole wall. There shall be no voids or visible leakage points. The bands must be tightened and locked into place. Any seal or seals failing this test shall be reworked and inspected at no additional expense to the OWNER. Because these manholes that are to be sealed are existing and active, additional testing that includes vacuum testing or exfiltration testing is not feasible. Each and every manhole barrel joint that is sealed shall be visually inspected. Part 2 — Products 2.01 Internal Joint Seal A. internal joint seals snail consist of extruded flexible high grade rubber compound splice using a high strength vulcanized splice conforming to ASTM C923. The rubber sleeve shall have a minimum width of 7.5 inches and a maximum expanded width of 13 inches. B. The expansion bands used to compress the sleeve against the manhole wall shall be formed from a minimum 16 gauge stainless steel (non-magnetic) conforming to the applicable requirements of ASTM C-923. The mechanism used to expand the bands shall have the capacity to develop pressure necessary to provide a water tight seal once the bands have been locked into place. All fasteners used to lock the bands shall be manufactured from stainless steel conforming to ASTM F-593, Type 304. C. Any restraining hoop used to prevent ballooning of the center section of the seal shall be a minimum of 5/16 inch stainless steel rod conforming to ASTM A-479, Type 304. The sleeve coupler tubes used to join the restraining hoop shall be a minimum of 5 inches in length and shall be made of stainless steel conforming to ASTM A-479, Type 304. 2.02 Equipment A. The Contractor shall use the manufacturer's recommended tools to prepare the sealing surface and to install the joint seal. 2.03 Repair Mortar A. Repair mortar shall be a single component, ready to use with water, high strength, non-shrink polymer modified cementitious patching mortar designed for horizontal, vertical, and overhead use. Repair mortar shall not contain calcium chloride, added gypsum, metallic particle, lime, or high alumina cements. Compressive strength shall conform to ASTM C-109 7 day strength of at least 4000 psi. Flexural Strength shall conform to ASTM C-348 7-day strength of at least 700 psi Part 3— Execution 3.01 General A. Maintain manhole service throughout the duration of the project. B Provide 48 hours advance notice to ENGINEER prior to start of work. C. Contractor to provide photographic log of all manhole barrel joints that are to be sealed. Before and after photographic documentation shall be provided. 3.02 Qualifications A. The Contractor shall demonstrate during the bidding process that they have a successful history of installing internal seals, or, at no cost to the OWNER, will participate in a manufacturer's approved training in lieu of experience. If the Contractor elects to have the training, a portion of this training must be witnessed by the ENGINEER. 3.03 Installation A All work to be performed shall be in strict conformance to these specifications and manufacturer's requirements. B. The Contractor is responsible for verifying the exact diameter of each manhole barrel joint that is to be sealed. C. The Contractor shall inspect each joint to be sealed. If the joint depth below grade is greater than 14 feet and flowing infiltration is observed, the Contractor shall utilize specification XXXX to seal the joint. D. The Contractor shall inspect the concrete surface 4 inches either side of the manhole barrel joint to be sealed for rust, scale, mineral deposits, debris, or concrete imperfections that would interfere with the successful installation of the seal. The Contractor shall be responsible to ensure all surfaces under the sealing area behind the expansion bands are clean, reasonably smooth, circular, and free of any defects that would prevent the rubber sleeve from achieving a watertight seal. Repair mortar meeting the requirements of Section 2.03 shall be used to repair any defects and provide an adequate surface for the sleeve to compress against. Part 4 — Measurement and Payment 4.01 The Internal Joint Seal shall be paid at the contract unit price bid per joint for the nominal diameter indicated and shall include the cost of furnishing and installing an Internal Joint Seal, including all necessary surface preparation work.