33 01 99.pdf

Section 219, Homestead Run Sewer Lining Project, Munhall, PA

SECTION TABLE OF CONTENTS

DIVISION 33 - UTILITIES

SECTION 33 01 99

CURED-IN-PLACE PIPE LINE REHABILITATION

PART 1 GENERAL

1.1 REFERENCES

1.2 SYSTEM DESCRIPTION

1.2.1 Design Requirements

1.2.2 Performance Requirements

1.3 SUBMITTALS

1.4 QUALITY ASSURANCE

1.4.1 Qualifications of Contractor

1.4.2 Pre-Construction Conference and Performance Work Submittal (PWS)

1.5 DELIVERY, STORAGE, AND HANDLING

1.6 SEQUENCING AND SCHEDULING

PART 2 PRODUCTS

2.1 MATERIALS

2.1.1 CIPP System Materials

PART 3 EXECUTION

3.1 PREPARATION

3.1.1 Safety

3.1.2 Quality Control Plan (QCP)

3.1.3 General CCTV Requirements

3.1.4 Pre-Construction Sewer Line Cleaning and Preparation

3.1.5 Pre-Installation Notification

3.1.6 Testing

3.1.7 Access to Sewer System

3.1.8 Access to Water

3.1.9 Bypass Pumping

3.2 INSTALLATION

3.2.1 Lining Procedure

3.2.2 Curing Procedure

3.2.3 Cool Down Procedure

3.2.4 Manhole Work

3.2.5 Reinstatement of Service Connections

3.2.6 Sealing of Service Connections

3.3 WARRANTY

3.4 CIPP Repair / Replacement

3.5 Record Drawings

3.6 Post-Installation Inspection

3.7 Final Acceptance

-- End of Section Table of Contents --

SECTION 33 01 99 Page 1 W911WN-10-B-0008 Revised by Amendment 0002

SECTION 33 01 99

CURED-IN-PLACE PIPE LINE REHABILITATION

PART 1 GENERAL

1.1 REFERENCES

The publications listed below form a part of this specification to the extent referenced. The publications are referred to within the text by the basic designation only.

AMERICAN WATER WORKS ASSOCIATION (AWWA)

AWWA M45 (2005; Addendum 2006; Errata 2008) Fiberglass Pipe Design

ASTM INTERNATIONAL (ASTM)

ASTM D 2990 (2001) Tensile, Compressive, and Flexural Creep and Creep-Rupture of Plastics

ASTM D 790 (2007e1) Flexural Properties of Unreinforced and Reinforced Plastics and Electrical Insulating Materials

ASTM F 1216 () Standard Practice for Rehabilitation of Existing Pipelines and Conduits by the Inversion and Curing of a Resin-Impregnated Tube

1.2 SYSTEM DESCRIPTION

This section consists of the requirements and work needed to rehabilitate existing pipes by furnishing and installing pipe liners by the method of slip lining. Use pipes and pipe liners of the sizes, types, design, and dimensions shown on the plans, and include all connections, joints, and other appurtenances as required to complete the work.

It is the intent of this section of the specification to provide for rehabilitating sanitary sewers without excavation by means of the installation of a resin-impregnated flexible tube which, when cured, shall be continuous and tight-fitting throughout the entire length of the original pipe. The CIPP shall extend the full length of the original pipe and provide a structurally sound, jointless and water-tight new pipe within a pipe. The CIPP shall fit sufficiently tight within the existing pipe so as to not leak at the manholes, at the service connections or through the wall of the installed pipe. If leakage occurs through the wall of the pipe, the liner shall be repaired or removed as recommended by the CIPP manufacturer. Final approval of the liner installation will be based on a leak tight pipe that meets all requirements of these Specifications.

The Contractor shall be responsible for furnishing all labor, supervision, materials, equipment, transportation and services necessary for traffic control, bypass pumping and/or diversion of sewage flows, cleaning and television inspection of sewers to be lined, removal of obstructions, liner

SECTION 33 01 99 Page 2 installation, reconnection of service connections, all quality controls, providing samples for performance of required material tests, final television inspection, testing of lined pipe system and warranty work in accordance with these Specifications to furnish and install the CIPP system.

The product furnished shall be a complete CIPP system including all materials, applicable equipment and installation procedures. All other CIPP systems or multi-component products will be required to meet the submittal requirements as contained herein.

The CIPP shall be continuous and jointless from manhole to manhole or access point to access point and shall be free of all defects that will affect the long term life and operation of the pipe.

Neither the CIPP system, nor its installation, shall cause adverse effects to any of the Municipal Authority's processes or facilities. The use of the product shall not result in the formation or production of any detrimental compounds or by-products at the wastewater treatment plant.

The Contractor shall notify the Contracting Officer and Munhall Sanitary Sewer Municipal Authority and identify any by-products produced as a result of the installation operations, test and monitor the levels, and comply with any and all local waste discharge requirements. The Contractor shall clean up, restore existing surface conditions and structures, and repair any of the CIPP system determined to be defective. The Contractor shall conduct installation operations and schedule cleanup in a manner to cause the least possible obstruction and inconvenience to traffic, pedestrians, businesses, and property owners or tenants in the project area.

All sections of this Specification are mutually complimentary and the overall intent is that each Contractor shall provide for everything in his or her portion of the work required to make a complete and operable job in every respect unless specifically noted otherwise.

It is the intent of this Specification to ensure that the work, as completed, shall meet all applicable codes, ordinances, rules and regulations of every authority having jurisdiction in the area where the construction is located. Failure of the Contractor to point out items that do not meet such requirements does not relieve any Contractor or his or her Subcontractors of the responsibility of meeting them.

1.2.1 Design Requirements

This section covers the minimum requirements for the rehabilitation of sanitary sewer pipelines by the installation of Cured-In-Place Pipe (CIPP), including type of repair, method of repair, materials, and documentation and testing requirements for each line scheduled for rehabilitation as indicated in the schedule of work and/or on the location maps.

The scope of work in this Contract includes, but is not limited to:

a. Development and submission of all required plans, material, and process submittals.

b. Cleaning of and removal of obstructions in designated pipe sections.

c. Post-Cleaning CCTV inspection and video taping of the designated pipe sections.

SECTION 33 01 99 Page 3

d. Insertion of a CIPP liner into designated pipe sections, and curing and cooling of the liner.

e. Materials testing by Government via independent laboratory.

f. Internal reestablishment of lateral connections, grout sealing of lateral connections.

g. Post-Construction CCTV inspection of completed sewer line sections.

h. Repair or replacement of identified defects.

i. Site restoration.

1.2.2 Performance Requirements

Notify the Contracting Officer 24 hours in advance of tests, and perform tests at the work site if practicable. Conform to local, state, and federal requirements.

1.3 SUBMITTALS

Government approval is required for submittals with a "G" designation;

submittals not having a "G" designation are for information only. When used, a designation following the "G" designation identifies the office that will review the submittal for the Government. Submit the following in accordance with Section 01 33 00 SUBMITTAL PROCEDURES:

SD-01 Preconstruction Submittals

Relining Procedures; G, RE

Submit a written report outlining the step-by-step procedures for the execution of the relining operations (i.e. length, line, obstructions, excavation, etc.) prior to the commencement of work. Any deviation from the pre-specified plan for the relining operation must be presented prior to execution.

Curing Times; G, RE

Provide a written schedule for curing times for each sewer line section for approval. Provide the schedule for each delivery order no less than 15 days prior to beginning work.

Curing Temperature Monitoring; G, RE

Submit a written method for monitoring line curing temperatures for approval no less than 15 days prior to beginning work.

SD-03 Product Data

MSDS; G, RE

The Contractor shall submit all MSDS sheets, Manufacturer Literature and Data, including physical characteristics, application and installation instructions, shipping, storage and handling instructions and recommendations for all materials to be furnished for the project.

SECTION 33 01 99 Page 4

Fabric Tube; G, RE

The Contractor shall submit fabric tube data including the Manufacturer and description of product components.

Flexible membrane (coating) material; G, RE

The Contractor shall submit data including recommended repair (patching) procedure if applicable.

Raw Resin Data; G, RE

The Contractor shall submit data including the Manufacturer and description of product components.

Tube Wet-Out and Cure Method; G, RE

The Contractor shall submit data tube wet-out & cure method including:

A complete description of the proposed wet-out procedure for the proposed technology.

The Manufacturer's recommended cure method - for each diameter and thickness of CIPP liner to be installed. The PWS shall contain a detailed curing procedure detailing the curing medium and the method of application.

SD-05 Design Data

Design Calculations; G, RE

The Contractor shall submit design calculations demonstrating that the minimum properties and strength requirements are met or exceeded.

SD-07 Certificates

Certificates of Compliance

The Contractor shall submit, prior to installation of the lining materials, certification of compliance with these Specifications.

Certified material test results shall be included that confirm that all materials conform to these Specifications. Materials not complying with these requirements will be rejected.

SD-10 Operation and Maintenance Data

The Contractor shall provide detailed instructions for making future connections to the reconstructed pipeline.

1.4 QUALITY ASSURANCE

1.4.1 Qualifications of Contractor

Installation of the sewer lining system shall be performed by an experienced Contractor fully licensed by the Process Manufacturer. The Contractor shall provide evidence of lining experience. The Contractor shall have a minimum of three years of continuous experience installing

SECTION 33 01 99 Page 5

CIPP liners in pipe of a similar size, length and configuration as contained in this contract. A minimum of 150,000 linear feet of shop wet-out liner installation is required and minimum of 6 onsite wet-out installations are required as applicable to this contract. The lead personnel including the superintendent, the foreman and the lead crew personnel for the CCTV inspection, resin wet-out, the CIPP liner installation, liner curing and the robotic service reconnections must have a minimum of three years of total experience with the CIPP technology proposed for this contract and must have demonstrated competency and experience to perform the scope of work contained in this contract. The name and experience of each lead individual performing work on this contract shall be submitted with the Performance Work Statement (PWS).

1.4.2 Pre-Construction Conference and Performance Work Submittal (PWS)

The Contractor shall submit, to the Contracting Officer, a Performance Work Statement (PWS) at the pre-construction meeting, which clearly defines the CIPP product delivery in conformance with the requirements of these contract documents. Unless otherwise directed by the Contracting Officer, the PWS shall at a minimum contain the following:

a. Clearly indicate that the CIPP will conform to the project requirements as indicated in these Specifications.

b. All applicable installation data as it relates to the method of installation and number of years experience of their installation crew.

c. The project installation list of all past projects installed in the respective state.

d. Third party technical test results covering all aspects of the product to include, but not be limited to, structural integrity and product life cycle.

Where the scope of work is specifically delineated in the contract documents, a detailed installation plan shall be developed and included in the Performance Work Statement (PWS) describing all preparation work, cleaning operations, pre-CCTV inspections, by-pass pumping, traffic control, installation procedure, method of curing, service reconnection, quality control, testing to be performed, final CCTV inspection, warrantees furnished and all else necessary and appropriate for a complete CIPP liner installation. The detailed installation schedule conforms to in all respects to the requirements of this contract.

Performance Work Statement (PWS) shall include the Contractor's description of the proposed CIPP lining technology, including a detailed plan for identifying all active service connections maintaining service, during mainline installation, to each home connected to the section of pipe being lined, including temporary service if required by the contract.

a. Certified material results shall be included that all materials conform to these Specifications and/or the pre-approved system.

Materials not complying with these requirements will be rejected.

b. Included in the submittals shall be a certified original copy with supporting literature from the resin supplier/manufacturer of the Infrared (IR) Spectrograph of the catalyzed resin mixture. The certification copy of the reference IR Spectrograph shall be the reference IR spectrograph used to assess compliance with these

SECTION 33 01 99 Page 6

Specifications.

The CIPP shall be designed per ASTM standards as a liner to rehabilitate the existing pipe or as a fully structural stand alone pipe-within-a-pipe.

The installed CIPP shall meet or exceed all contract specified physical properties and fit tightly within the existing pipe all within the tolerances specified. The installed CIPP shall withstand all applicable surcharge loads (soil overburden, live loads, etc.) and external hydrostatic (groundwater) pressure, if present, for each specific installation location. The CIPP design shall assume no bonding to the original pipe wall. The contractor shall provide Engineering design calculations, in accordance with the Appendix of ASTM F 1216, for each length of liner to be installed including the required structural wall thickness of each proposed CIPP section. It will be acceptable for the Contractor to submit a design for the most severe line condition and apply that design to all of the line sections. These calculations shall be performed and certified by a Professional Engineer with current registration in the State of Pennsylvania. All calculations shall include data that conforms to the requirements of these Specifications. The following design parameters are to be applied for this project:

a. Design Safety Factor = 2.0 for pipes less than 36" in diameter.

b. 50 Year Extrapolated Creep Retention Factor = 33% of the initial design flux modulus as determined by the ASTM D 790 test method. This value should be used unless the Contractor submits long-term test data ( ASTM D 2990) to substantiate a higher retention factor.

c. Minimum Design Quality = 2% or actual as measured by field inspection. Joviality as defined by ASTM F 1216.

d. Constrained Soil Modulus Per AASHTO LRFD Section 12 and AWWA M45.

No value less then 1,000 PSI shall be used.

e. Groundwater Depth = 100% of manhole depth plus an additional 2 feet in all cases.

f. Soil Depth Above the Crown of the Pipe = As specified or indicated on the Plans. Manhole depths are provided in the Appendix.

g. AASHTO H20 live loadings shall be used for all lined sections under roadways.

h. Soil Load (assumed) = 120 lb/cu. Ft.

i. Minimum Service Life = 50 years

Technology data of proposed Manufacturer(s) shall be submitted for all CIPP products and all associated technologies to be furnished.

Submittals shall include information on the cured-in-place pipe intended for installation and all tools and equipment required for a complete installation. The PWS shall identify which tools and equipment will be redundant on the job site in the event of equipment breakdown. All equipment, to be furnished for the project, including proposed back-up equipment, shall be clearly described. The Contractor shall outline the mitigation procedure to be implemented in the event of key equipment failure during the installation process.

SECTION 33 01 99 Page 7

The Performance Work Statement (PWS) shall include a detailed description of the Contractor's proposed procedures for removal of any existing blockages in the pipeline that may be encountered during the cleaning process.

A detailed public notification plan shall be prepared and submitted including detailed staged notification to residences affected by the CIPP installation.

Compensation for all work required for the submittal of the PWS shall be included in and considered incidental to the various pipelining items contained in the bid prices.

1.5 DELIVERY, STORAGE, AND HANDLING

All materials, shipped to the project site, shall be accompanied by test reports certifying that the material conforms to the ASTM standards listed herein. Materials shall be shipped, stored, and handled in a manner consistent with written recommendations of the CIPP system Manufacturer to avoid damage.

Damage includes, but is not limited to, gouging, abrasion, flattening, cutting, puncturing, tearing, or ultra-violet (UV) degradation. etc.

All damaged materials shall be promptly removed from the project site and disposed of in accordance with all current applicable agency regulations at the Contractor's expense.

The impregnated liner shall be transported to the site prior to insertion in a suitable lightproof container with the temperature maintained at the Manufacturer's recommended storage temperature.

Any liner that shows evidence of thermosetting prior to installation shall be promptly removed from the project site and disposed of in accordance with all current applicable agency regulations at the Contractor's expense.

All on site storage locations shall be approved by the Contracting Officer.

1.6 SEQUENCING AND SCHEDULING

Submit plan for final approval of construction sequence and schedule prior to commencing construction.

PART 2 PRODUCTS

2.1 MATERIALS

2.1.1 CIPP System Materials

General: The liner shall be fabricated from materials which, when cured, will be chemically resistant to withstand internal exposure to sewage gases containing normal levels for domestic sewage of hydrogen sulfide, carbon monoxide, carbon dioxide, methane, traces of mercaptains, kerosene, saturation with moisture, dilute sulfuric acid, external exposure to soil bacteria and any chemical attack which may be due to materials in the surrounding ground.

The installed CIPP shall have a long term (50 year) corrosion resistance to the typical chemicals found in domestic sewage.

SECTION 33 01 99 Page 8

Liner Material Content: The liner content shall be determined by the Contractor to ensure a cured thickness of liner, as determined by the Contractor and approved by the Contracting Officer for each line section.

Thickness of cured liner to be as specified (+10 percent; -5 percent) and shall not include the thickness of any polyurethane inner liner.

Resin Content: The resin content of the liner shall be 85 percent by volume of the final vacuum impregnated tube.

All materials used in the lining and in the insertion process shall provide the minimum mechanical properties listed below after the curing process.

All materials shall be approved by the Contracting Officer prior to the insertion into the existing piping.

Rejected material shall be replaced with approved materials at the Contractor's expense.

Resin: The resin shall be a corrosion resistant polyester or vinyl ester resin and catalyst system that when properly cured within the tube composite meets the requirements of ASTM F 1216, ASTM F 1743 or ASTM F 2019, the physical properties herein, and those, which are to be utilized in the design of the CIPP for this project. The resin shall produce CIPP which will comply with or exceed the structural and chemical resistance requirements of this specification.

The resin shall be a resin for general chemical applications approved by the Contracting Officer. Polyester resin shall be designed for general chemical applications and approved by the Contracting Officer. The use of epoxy or vinylester resins in any tube may be specified by the Contractor where specific strength, corrosive resistance, or high temperature requirements are deemed to warrant their use. The use of these materials will require approval by the Contracting Officer.

Fillers and Pigments: Any polyester resins used shall not contain fillers, except those required for viscosity control. Up to 5 percent by mass, thixotropic agent that will not interfere with visual inspection may be added for viscosity control. Resins may contain pigments, dyes, or colorants that will not interfere with viscosity control.

Epoxy Resin: The use of epoxy resins compatible with the system to impregnate the liner may be permitted in some circumstances. The use of up to 40 percent by mass of suitable fillers may be permitted. A written request for permission to use epoxy resin in any liner may be submitted to the Contracting Officer by the Contractor if conditions warrant its use.

Fabric Tube: The fabric tube shall consist of one or more layers of absorbent non-woven felt fabric, felt/fiberglass or fiberglass and meet the requirements of ASTM F 1216, ASTM F 1743, ASTM D 5813 & ASTM F 2019. The fabric tube shall be capable of absorbing and carrying resins, constructed to withstand installation pressures and curing temperatures and have sufficient strength to bridge missing pipe segments, and stretch to fit irregular pipe sections. The contractor shall submit certified information from the felt Manufacturer on the nominal void volume in the felt fabric that will be filled with resin.

The wet-out fabric tube shall have a uniform thickness and excess resin distribution that when compressed at installation pressures will meet or

SECTION 33 01 99 Page 9 exceed the design thickness after cure.

The fabric tube shall be manufactured to a size and length that when installed will tightly fit the internal circumference, meeting applicable ASTM standards or better, of the original pipe. Allowance shall be made for circumferential stretching during installation. The tube shall be properly sized to the diameter of the existing pipe and the length to be rehabilitated and be able to stretch to fit irregular pipe sections and negotiate bends. The Contractor shall determine the minimum tube length necessary to effectively span the designated run between manholes. The Contractor shall verify the lengths in the field prior to ordering and prior to impregnation of the tube with resin, to ensure that the tube will have sufficient length to extend the entire length of the run. The Contractor shall also measure the inside diameter of the existing pipelines in the field prior to ordering liner so that the liner can be installed in a tight-fitted condition.

The outside and/or inside layer of the fabric tube (before inversion/pull-in, as applicable) shall be coated with an impermeable, flexible membrane that will contain the resin and facilitate, if applicable, vacuum impregnation and monitoring of the resin saturation during the resin impregnation (wetout) procedure.

No material shall be included in the fabric tube that may cause de-lamination in the cured CIPP. No dry or unsaturated layers shall be acceptable upon visual inspection as evident by color contrast between the felt fabric and the activated resin containing a colorant.

The wall color of the interior pipe surface of CIPP after installation shall be a light reflective color so that a clear detailed examination with closed circuit television inspection equipment may be made. The hue of the color shall be dark enough to distinguish a contrast between the fully resin saturated felt fabric and dry or resin lean areas.

Seams in the fabric tube, if applicable, shall meet the requirements of

ASTM D 5813.

The outside of the fabric tube shall be marked every 5 feet with the name of the Manufacturer or CIPP system, manufacturing lot and production footage.

The minimum length of the fabric tube shall be that deemed necessary by the installer to effectively span the distance from the starting manhole to the terminating manhole or access point plus the amount required to run-in and run-out for the installation process and prove for testing samples.

The nominal fabric tube wall thickness shall be constructed, as a minimum, to the nearest 0.5 mm increment, rounded up from the design thickness for that section of installed CIPP. Wall thickness transitions, in 0.5 mm increments or greater as appropriate, may be fabricated into the fabric tube between installation entrance and exit access points. The quantity of resin used in the impregnation shall be sufficient to fill all of the felt voids for the nominal felt thickness.

The reinforcing material of the liner shall be of a needle interlocked terylene felt or other material approved by the Contracting Officer formed into sheets of required thickness. Liners may be made of single or multiple layer construction where any layer must not be less than 1.5 mm thick. A suitable mechanical strengthener membrane or strips may be

SECTION 33 01 99 Page 10 sandwiched in between layers where required to control longitudinal stretching. The minimum thickness of a bonded polyurethane membrane and inner liner, if used, shall be 0.25 mm plus 5 percent and shall not affect the structural dimension requirements of the cured in place piping.

PART 3 EXECUTION

3.1 PREPARATION

Complete the following preparations, unless approved otherwise by the Contracting Officer. The Contracting Officer makes no guarantee regarding the information, data, and physical condition of underground facilities or existing pipe lines. Before commencing with any work, or ordering any materials, physically measure and perform CCTV inspection of the existing pipe line to verify that the rehabilitation specified herein is appropriate.

3.1.1 Safety

The Contractor shall carry out his or her operations in strict accordance with all OSHA, Manufacturer, and other pertinent regulatory agency safety requirements.

Any work within manholes shall be classified as "Confined Space" and will require complete compliance with OSHA Standards. The Government will not be liable for any citations or fines received by the contractor from OSHA.

The Contractor shall be fully responsible for adhering to all confined space entry requirements.

The Contractor shall secure the site for the working conditions in compliance with all OSHA, Manufacturer, and other pertinent regulatory agency requirements. The Contractor shall erect such signs and other devices as are necessary for the safety of the work site.

The Contractor shall submit a proposed Safety Plan to the Contracting Officer, prior to beginning any work, identifying all competent persons.

The plan shall include a description of a daily safety program for the job site and all emergency procedures to be implemented in the event of a safety incident. All work shall be conducted in accordance with the Contractor's submitted Safety Plan.

Compensation for all work required for the submittal of the Safety Plan shall be included and considered incidental to the various pipelining items contained in the bid prices.

3.1.2 Quality Control Plan (QCP)

A detailed quality control plan (QCP) shall be submitted to the Contracting Officer that fully represents and conforms to the requirements of these Specifications. At a minimum the QCP shall include the following:

A detailed report of the proposed quality controls to be performed by the Contractor.

Defined responsibilities, of the Contractor's personnel, for assuring that all quality requirements, for this contract, are met. These shall be assigned, by the Contractor, to specific personnel. Said personnel shall be identified within the QCP.

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Proposed procedures for quality control, product sampling and testing shall be defined and submitted as part of the plan.

Proposed methods for product performance controls, including method of and frequency of product sampling and testing both in raw material form and cured product form.

A scheduled performance and product test results review between the Contractor and the Contracting Officer at a regularly scheduled job meeting.

Inspection forms and guidelines for quality control inspections shall be prepared in accordance with the standards specified in this contract and submitted with the QCP.

Resin wet-out operator must certify in writing that the amount of resin in the manufactured liner meets the requirements of the proposed design.

Compensation for all work required for the submittal of the QCP shall be included in the various pipelining items contained in the Proposal.

3.1.3 General CCTV Requirements

CCTV inspection of pipeline shall be performed by experienced personnel trained in locating breaks, obstacles, and service connections by closed circuit television. Only PACP certified personnel trained in locating breaks, obstacles and service connections by closed circuit television shall perform the inspection.

The CCTV equipment used shall consist of complete closed circuit color television system including a camera, lighting, electronic footage counter, television monitor, mobile television studio, video/DVD recorder/player with appropriate recording media for recording televising operations.

The television camera used for the inspection shall be pan and tilt type color camera, which is specifically designed and constructed for such inspection and shall have above ground control for forward and backward movement in the sewer. Lighting for the camera shall be waterproof and suitable to allow a clear picture of the entire periphery of the pipe. The camera shall be operative under 100 percent humidity conditions. The camera, television monitor and other components of the video system shall be capable of producing picture quality to the satisfaction of the Contracting Officer; and, if unsatisfactory, equipment shall be removed and no payment will be made for any unsatisfactory inspection. An electronic footage counter shall be set up to accurately measure the exact distance of the camera from the centerline of the starting manhole. This measurement shall be displayed on the monitor and recorded at all times. The importance of accurate distance measurements is emphasized.

While recording, the camera shall be moved through the line at a moderate rate, stopping when necessary to permit the proper documentation of the sewer's condition. In no case will the television camera be moved at a speed greater than 30 feet per minute.

The purpose of video recordings shall be to supply a visual and audio record of all line segments that are televised. Video recording playback shall be at the same speed that it was recorded. The Contractor shall have all recordings and necessary playback equipment readily accessible for review by the Contracting Officer during the project.

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All recorded inspection video shall be provided in DVD and/or MPEG format.

VHS video tapes are not acceptable. All inspection logs shall utilize a database system such as WinCan or Approved Equal.

3.1.4 Pre-Construction Sewer Line Cleaning and Preparation

Prior to installation of the CIPP liner the Contractor shall prepare the interior of the existing host pipe by thoroughly cleaning all debris and removing all obstructions that will effect the installation and the final CIPP product delivery to the Government.

Cleaning shall include the trapping, removal and disposal of all foreign material including but not limited to, dirt, gravel, rocks, sand, roots, grease, sediments, residual wastes or other debris form the host pipe.

The Contractor shall utilize adequate, high velocity hydrocleaning equipment specifically designed for the cleaning of sewers. Should hydrocleaning not prove adequate, other approved mechanical cleaning equipment shall be utilized.

The Contractor shall clean debris out of the sewer line in accordance with the latest edition of the National Association of Sewer Service Companies (NASSCO) Specifications. Definitions of light, medium, and heavy pipe cleaning follow:

a. Light Cleaning: Where it has been determined through a visual inspection that only small deposits of loose debris exist within the pipeline.

b. b. Heavy Cleaning: Where it has been determined through a visual inspection that heavy deposits of loose debris or root growth exist within the pipeline. Heavy cleaning is identified as more than two manhole to manhole passes with jetter equipment and/or the required use of bucket or rodding equipment.

The Contractor is responsible for clearing the lines of obstructions such as solids, dropped joints, protruding service connections, or collapsed pipe that will prevent the insertion of the liner. It shall be the responsibility of the Contractor to clear the line of obstructions or collapsed pipe that will prevent the insertion of the liner. If inspection reveals an obstruction, misalignment, broken or collapsed section or sag that cannot be removed without excavation then the Contractor shall notify the Contracting Officer and the Munhall Sanitary Sewer Municipal Authority in writing. The Munhall Sanitary Sewer Municipal Authority will be responsible for the repair. The Contractor shall move to the next lining segment and continue work and shall return after the Munhall Sanitary Sewer Municipal Authority has made the repairs.

The Contractor is responsible for clearing the host pipe of conditions and/or obstruction that will prevent the installation of the CIPP liner.

If pre-construction CCTV inspections reveal any obstructions, sections (not at joint) with greater than 10% quality, protruding services, service connections with conditions that will prevent the grouting of the service connection, misalignments, severe offset joints, severely deteriorated or collapsed pipe, and/or sags, that will prevent the installation of the CIPP liner and routing of the service connection, the Contractor shall notify the Contracting Officer and the Munhall Sanitary Sewer Municipal Authority in writing. The Munhall Sanitary Sewer Municipal Authority will be

SECTION 33 01 99 Page 13 responsible for the repair. The Contractor shall move to the next lining segment and continue work and shall return after the Munhall Sanitary Sewer Municipal Authority has made the repairs.

The Contractor is responsible for the sealing of areas of significant infiltration as directed by the Contracting Officer at the time of Post-Cleaning CCTV Inspection.

Suitable weirs or dams shall be constructed in the downstream manhole in such a manner that the solids are trapped. Moving material from manhole section to manhole section shall not be allowed.

Under no circumstances shall sewage or solids removed be dumped onto streets, catch basins, or storm drains. Cost for such removal shall be included in the bid price for this Contract. All solid debris shall be removed from the system and disposed of properly by the Contractor. Any solids removed during sewer cleaning shall be sent to a commercial landfill by the Contractor. Disposal of solid debris is specified in Section

02 42 00 DISPOSAL OF MATERIALS.

As applicable the contractor shall either plug or install a flow bypass pumping system to properly clean the pipe lines.

Precautions shall be taken by the Contractor during hydraulic cleaning to ensure that water does not flood property or buildings served by the manhole section being cleaned. Any damage caused during the cleaning process shall be repaired at the expense of the Contractor.

Precautions must also be taken to ensure that the sewer lines are not damaged by improper use of the cleaning equipment. Any damage caused during the cleaning process shall be repaired at the expense of the Contractor.

The Contractor shall dispose off all debris at no charge.

3.1.5 Pre-Installation Notification

The Contractor must contact all residents and/or business establishments residing in the affected area of sewers to be relined at least a minimum of seven days before installation by letter. This Service Disruption Notice will give a brief summary of the sewer relining process and approximate time that sewers are anticipated to be out of service, and steps on how to ease this inconvenience. The notice will also request that residents and/or business establishments limit their use of water while the system is out of service.

The Contractor shall be required to notify residents or occupants of the of the Service Disruption 24 hours before installation and to answer any questions that residents or occupants may have.

In the event that the Contractor is unable to install the liner on the date stated in the Service Disruption Notice, the Contractor must immediately provide written notification of the change of date including the new date for the liner installation.

At the request of the Contracting Officer, the Contractor will supply a clean, properly functioning portable chemical toilet for each resident for the entire time that such resident's service connection is blocked at the sewer. Such toilets shall be delivered prior to any service connections

SECTION 33 01 99 Page 14 being blocked in the sewer and shall be promptly retrieved by the Contractor upon service connection reinstatement. If the sewer lines are blocked for an extended amount of time, the Contractor shall maintain the portable toilets for the duration required.

3.1.6 Testing

All materials furnished, as part of this contract shall be marked with detailed product information, stored in a manner specified by the Manufacturer and tested to the requirement of this contract.

Tests for compliance with this specification shall be made as specified herein and according to the applicable ASTM specification. A certificate of compliance with this specification shall be furnished by the Manufacturer for all material furnished under this specification.

The physical properties of the installed CIPP shall be verified through field sampling and laboratory testing. All materials for testing shall be furnished by the Contractor to the Government for testing. All materials testing shall be performed at the Contractor's expense, by an independent third party laboratory selected by the Contracting Officer as recommended by the CIPP Manufacturer. All tests shall be in accordance with applicable ASTM test methods to confirm compliance with the requirements specified in these contract documents.

The Contractor shall provide samples for testing to the Contracting Officer from the actual installed CIPP liner. Samples shall be provided, at a minimum from one location per 1,000 linear feet of CIPP installed. The sample shall be cut from a section of cured CIPP that has been inverted or pulled through a like diameter pipe which has been held in place by a suitable heat sink, such as sandbags. All curing, cutting and identification of samples will be witnessed by the Contracting Officer's Authorized Representative and transmitted by the Government to the testing laboratory. The Contracting Officer shall take possession of the samples for testing and shall maintain the chain of custody, deliver the samples to an approved laboratory and pay for all material and product testing performed under this contract.

On pipelines greater in diameter than is practical to produce restrained samples, the Contracting Officer may at his or her discretion, require plate samples cured with the CIPP or designate a location in the newly installed CIPP where the Contractor shall take a sample. The Opening produced from the sample shall be repaired in accordance with Manufacturers recommended procedures.

The laboratory results shall identify the test sample location as referenced to the nearest manhole and station. Final payment for the project shall be withheld pending receipt and approval of the test results. If properties tested do not meet minimum requirements or any defects are found, the CIPP shall be repaired or replaced by the Contractor, at no additional cost to the Government.

The physical properties and characteristics of the finished liner will vary considerably, depending on the types and mixing proportions of the materials used, and the degree of cure executed. It shall be the responsibility of the Contractor to control these variables and to provide a CIPP system which meets or exceeds the following minimum strength requirements.

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a. Flexural Modulus of Elasticity (Long-Term) 250,000 PSI

b. Tensile Strength @ Yield 20°C 3,000 PSI

c. Flexural Strength (Short Term) 4,500 PSI

d. Impact Strength 1.5 ft-lb/in.

e. Shear Strength 7,000 PSI

f. Flexural Modules 250,000 PSI

g. Hardness (Barcol) 33

h. Heat Distortion Temperature 70°C

Chemical resistance - The CIPP system installed shall meet the chemical resistance requirements of ASTM standards. CIPP samples tested shall be of fabric tube and the specific resin proposed for actual construction. It is required that CIPP samples without plastic coating meet these chemical testing requirements.

Hydraulic Capacity - Overall, the hydraulic capacity shall be maintained as large as possible. The installed CIPP shall at a minimum be equal to the full flow capacity of the original pipe before rehabilitation. In those cases where full capacity cannot be achieved after liner installation, the Contractor shall submit a request to waive this requirement, together with the reasons for the waiver request. Calculated capacities may be derived using a commonly accepted roughness coefficient for the existing pipe material taking into consideration its age and condition.

The installed CIPP thickness shall be measured for each line section installed. If the CIPP thickness does not meet that specified in the contract and submitted as the approved design by the Contractor then the liner shall be repaired or removed. The liner thickness shall have a tolerance of plus 10% and minus 5%.

All costs associated with providing cured CIPP samples for testing shall be incidental to the installation of the CIPP liner and be the responsibility of the Contractor.

Payment for all laboratory testing by the responsibility of the Contractor.

3.1.7 Access to Sewer System

The Contractor may, under the direction of the Contracting Officer, utilize any of the existing manholes in the project area as installation access points. If a street must be closed or restricted to traffic because of the location of the sewer, the Contractor shall furnish a detailed traffic control plan and all labor and equipment necessary or implementation of the plan. The plan shall be in conformance with the requirements of the local agency having jurisdiction over traffic control.

All work performed under this Contract shall be limited to the CWL depicted on the drawings. Any additional work areas utilized by the Contractor shall be the Contractor's responsibility to obtain from the landowner and will not be part of the Contractor's bid.

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3.1.8 Access to Water

The Contractor shall be responsible for securing access to his or her own water supply.

The use of stream water, storm water or sewage water is prohibited.

3.1.9 Bypass Pumping

If required, provide for continuous bypass flow around the section or sections of pipe designated for the liner process. Provide pump and bypass lines of adequate size and capacity to handle the necessary flow.

For the sewer lines that are to receive CIPP installation, as illustrated on the Project Drawings, the following dry and wet weather information is provided:

From Manhole 935 to Manhole A608, the average dry weather flow is approximately 2.0 MGD. The wet weather peak hourly flow is approximately 12 MGD. From Manhole 1020 to 397, the average dry weather flow is approximately 0.7 MGD. The wet weather peak hourly flow is approximately 3 MGD.

Manhole Dry Weather Average Daily Flow (MGD

Wet Weather Peak Hourly Flow (MGD)

MH 935 to MH A608 2.0 12

MH 1020 to MH 397 0.7 3

The Contractor shall provide for the flow of existing mainline and service connection effluent around the section or sections of pipe designated for CIPP installation. The bypass shall be made by plugging existing upstream manholes, as necessary, and pumping the sewage into a downstream manhole of capacity and size to handle the flow. Service connection effluent may be plugged only after proper notification to the affected residence and may not remain plugged for a period longer than 24 consecutive hours.

Installation of the liner shall not begin until the Contractor has installed a sewage by-pass system and all pumping facilities have been installed and tested under full operating conditions including the bypass of mainline and side sewer flows. Once the lining process has begun, existing sewage flows shall be maintained, until the resin/felt tube composite is fully cured, cooled down, fully televised and the CIPP ends finished. The Contractor shall coordinate sewer bypass and flow interruptions with the Contracting Officer at least 14 days in advance and with the property owners and businesses at least 3 business days in advance. The pump and bypass lines shall be of adequate capacity and size to handle peak flows. The bypass system must be a leakproof system. Under no circumstances will the dumping or spilling of raw sewage on private property or in streets or waterways be permitted. The Contractor shall submit a detail of the bypass plan and design to the Contracting Officer before proceeding with any CIPP installation. Bypass pumping and all associated costs shall be incidental to the installation of the CIPP liner.

3.2 INSTALLATION

3.2.1 Lining Procedure

The CIPP Liner shall be installed and cured in the host pipe per the

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Manufacturer's Specifications as described and submitted in the PWS.

Prior to installation and as recommended by the Manufacturer remote temperature gauges or sensors shall be placed inside the host pipe to monitor the temperatures during the cure cycle. Liner and/or host pipe interface temperature shall be monitored and logged during curing of the liner.

The wet-out tube shall be positioned in the pipeline using the method specified by the Manufacturer. Care should be exercised not to damage the tube as a result of installation. The tube should be pulled-in or inverted through an existing manhole or approved access point and fully extend to the next designated manhole or termination point.

The tubes shall be designed to withstand negotiation of offsets, gaps, angles (not more than 45°) and grades without damage to the tube during the insertion process. Individual insertion runs can be made over one or more manhole-to-manhole sections, as determined in the field by the Contractor and approved by the Contracting Officer.

3.2.2 Curing Procedure

Curing shall be accomplished by utilizing the appropriate medium in accordance with the Manufacturer's recommended cure schedule. The curing source or in and output temperatures shall be monitored and logged during the cure cycles. The Manufacturer's recommended cure schedule shall be used for each line segment installed, and the liner wall thickness and the existing ground conditions with regard to temperature, moisture level, and thermal conductivity of soil, per ASTM as applicable, shall be taken into account by the Contractor..

The Contractor shall supply suitable heat sources and recirculation equipment capable of delivering hot water or steam to the far end of the liner to quickly and uniformly raise the temperature in the entire liner, once inserted in the conduit, above the temperature required to commence the exothermic reaction of the resin, as determined by the catalyst system employed.

The CIPP installation equipment and host pipe shall be outfitted with the following gauges and sensors prior to installation CIPP. Temperatures and curing time should be kept within the ranges recommended by the manufacturer.

The heat source shall be fitted with suitable monitors to gage the temperature of the incoming and outgoing supply.

Remote temperature sensors (with corresponding gauges) shall be installed inside the host pipe to gauge temperature throughout the length of the liner.

The Contractor shall keep and provide to the Contracting Officer written records/logs of, heat source incoming and outgoing temperatures, and temperatures at remote sensor locations.

The initial cure shall be deemed to be completed when a uniform temperature, as determined by the temperature monitors on the heat sources, is achieved throughout the length of the liner and visual inspection of the exposed portions of the liner appear to be hard and sound.

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3.2.3 Cool Down Procedure

The Contractor shall cool the CIPP in accordance with the approved CIPP Manufacturer's instructions.

Temperatures and curing data shall be monitored and recorded, by the Contractor, throughout the installation process to ensure that each phase of the process is achieved as approved in accordance with the CIPP System Manufacturer's specification.

The post cure period shall commence with the heat source shut down but continued recirculation to maintain the elevated pressure and temperature in the liner to Manufacturer's specification.

The duration of the cure period shall be to Manufacturer specification.

3.2.4 Manhole Work

After the cool down process has been completed, seals consisting of a resin mixture or hydrophilic seal compatible with the installed CIPP shall be applied at manhole walls in accordance with the CIPP System Manufacturer's recommendations.

3.2.5 Reinstatement of Service Connections

After the liner has been fully cured and cooled it shall be the…