492023 Addendum No. 1-20260514.pdf

05.26 ADDENDUM

492.023.004 00 91 13-1

SECTION 00 91 13

ADDENDUM

Village of Ilion

Water System Improvements Project Contract No. 6 – Transmission Main Improvements

Addendum No. 1 Date Issued: May 14, 2026

The attention of bidders is called to the following changes to the Bid Documents, shall be taken into account in the preparation of Bids, and shall be a part of the Bid Documents

Bidders must acknowledge receipt of this Addendum on page 1 of the Bid Form.

CLARIFICATION OF CONTRACT DOCUMENTS

Subsequent to the publishing of the Advertisement for Bids for this project, questions have been received by the Engineer in reference to the Contract. In response to these questions, the Engineer offers the following clarifications:

1. Reference: Will the Village consider adopting the industry standard of a CIPP liner sample for every 1000 feet?

Clarification: Each liner installed shall be tested in accordance to the reference standards listed for the physical properties specified in Specification 33 01 10.72, Section 1.03.E.

2. Reference: Please confirm the required test pressure for the lined water mains.

Clarification: The required test pressure for each lined section of pipe is 150 PSI. Refer to Specification 33 01 10.72 Section 3.08.B.

3. Reference: Can the Village take both mains out of service simultaneously?

Clarification: No. At least one transmission main must remain in service throughout the entire project so that the Village has access to potable water.

4. Reference: Can the manufacturer’s reconnection to a lined water main procedure be adhered to?

Clarification: Reconnection of a lined water main shall comply with Specification 33 01 10.72, Section 3.10.

5. Reference: Will all required permits and approvals be secured and in place for the awarded contractor prior to the start of work?

Clarification: The Contractor must list themselves as a co-permitee on the NYSDOT Highway Work Permit. All environmental permits required for the project have been obtained.

ADDENDUM 05.26

00 91 13-2 492.023.004

6. Reference: Project schedule and constraints.

Clarification: Steele Creek must be crossed to access the lower portion of the transmission mains. Steele Creek is a DEC regulated trout stream, and in-water access can only occur between June 1st – September 30th.

PROJECT MANUAL

Section Description

33 01 10.72 CLOSE-FIT CURED-IN-PLACE LINING FOR POTABLE WATER MAINS

a. The following revisions have been made:

1. ADD the following to Section 2.01.B.

i. AquaPipe.

ii. United Blue.

2. ADD the following as Section 3.07.M.

i. The materials and properties testing shall be performed in an ISO 17025 accredited testing facility.

3. REMOVE section 3.11.C. in its entirety, and REPLACE with the following:

i. Upon acceptance of the installation, the Contractor will restore the project area affected by the operations.

DRAWINGS

Sheet No. Description

+ +END OF ADDENDUM+ +

Barton & Loguidice, D.P.C.

Chris Lawton, P.E.

Senior Vice President

Attachments

05.26 CLOSE-FIT CURED-IN-PLACE LINING FOR POTABLE WATER MAINS

492.023.004 33 01 10.72-1

SECTION 33 01 10.72

CLOSE-FIT CURED-IN-PLACE LINING FOR POTABLE WATER MAINS

PART 1 - GENERAL

1.01 SUMMARY

A. It is the intent of this specification to provide for the reconstruction of the designated pressure pipe by installation of a new cured in place pipe (CIPP) within the existing (host) pipe.

B. The CIPP shall be designed as a fully structural Class IV pipe, not relying on the remaining strength or water tightness of the host pipe to withstand long-term external loading.

C. The products incorporated into the Work shall be certified to NSF/ANSI Standard 61.

D. In case of conflicting requirements between this specification and the AWWA standards, this specification shall govern.

1.02 REFERENCE STANDARDS

A. ASTM International (ASTM):

1. D578, Standard Specification Glass Fiber Strands.

2. D638, Standard Test Method for Tensile Properties of Plastics.

3. D790, Standard Test Method for Flexural Properties of Unreinforced and

Reinforced Plastics and Electrical Insulating Materials.

4. D2122, Standard Test Method for Determining Dimensions of

Thermoplastic Pipe and Fittings.

5. D3567, Standard Practice for Determining Dimensions of “Fiberglass”

(Glass-Fiber-Reinforced Thermosetting Resin) Pipe and Fittings.

6. D5813, Standard Specification for Cured-in-Place Thermosetting Resin

Sewer Piping Systems.

7. F1216, Standard Practice for Rehabilitation of Existing Pipelines and

Conduits by the Inversion and Curing of a Resin-Impregnated Tube.

8. F1743, Standard Practice for Rehabilitation of Existing Pipelines and

Conduits by Pulled-in-Place Installation of Cured-in-Place Thermosetting Resin Pipe (CIPP).

9. F2019, Standard Practice for Rehabilitation of Existing Pipelines and Conduits by the Pulled in Place Installation of Glass Reinforced Plastic Cured-in-Place (GRP-CIPP) Using the UV-Light Curing Method

B. American Water Works Association:

1. C623, Cured-in-Place Pipe (CIPP) Rehabilitation of Pressurized Potable

Water Pipelines, 4 In. and Larger.

CLOSE-FIT CURED-IN-PLACE LINING FOR POTABLE WATER MAINS 05.26

33 01 10.72-2 492.023.004

2. M28, Rehabilitation of Water Mains.

3. Committee Report, Structural Classifications of Pressure Pipe Linings.

C. Code of Federal Regulations (CFR):

1. 29 CFR 1910.146, Permit Required Confined Spaces.

2. 29 CFR 1926.650, Excavations: Scope, Application and Definitions

Applicable to this Subpart.

3. 29 CFR 1926.651, Specific Excavation Requirements.

4. 29 CFR 1926.652, Requirements for Protective Systems.

D. NSF International (NSF):

1. 61, Drinking Water System Components, Health Effects.

1.03 SYSTEM DESCRIPTION

A. General:

1. The liner shall be characterized and proven as detailed in AWWA Manual

M28, with appropriate reference to AWWA Committee Report, Structural Classification of Pressure Pipe Liners.

2. It shall be designated and designed to provide a Class IV Fully Structural Liner as identified by the Owner’s Design Intent and requirements.

B. Liner details:

1. The CIPP tube shall consist of one or more layers of absorbent woven and/or non-woven synthetic fiber, with glass or woven fiber reinforcement.

2. The CIPP tube is then impregnated with a thermoset resin system that is compatible with the installation process being used.

3. For potable water applications, the completed liner shall meet NSF/ANSI 61 certification requirements.

4. The tube shall be fabricated to dimensions such that when installed will fit tightly to the internal circumference of the host pipe being lined, making allowance for stretching during installation.

5. In the installed state, the inside layer of the tube shall be coated with a translucent, flexible plastic material that acts to separate the curing heat medium from the thermoset resin system undergoing cure.

6. The tube shall provide a finished thickness that complies with CIPP industry standards that when compressed at installation pressures will meet or exceed the minimum required thickness specified in the design submittals.

C. Performance requirements:

1. The CIPP shall be designed as per ASTM F1216, Appendix X1.3.2 for the

Fully Deteriorated Pressure Pipe condition and shall be provided as a submittal.

492.023.004 33 01 10.72-3

2. These detailed calculations shall provide the input data as well as the actual calculation for Equations X1.1, X1.3, X1.4 and X1.7 of Appendix X1. of ASTM F1216.

3. The design submittal shall also clearly identify the physical properties used for design.

4. Design shall also verify axial strength to meet specifications.

5. The liner design shall not require or infer full length adhesion or bond to the host pipe, providing a liner totally independent of the host pipe.

6. Other than what is allowed in ASTM F1216, the CIPP design shall assume no contribution from the original host pipe.

D. The design of the CIPP shall be based on the following parameters:

1. Diameter: 12 inch

2. Internal design pressure: 80 PSI

3. Ovality: 0%

4. Soil depth above invert: 5-14 feet

5. Ground water depth above invert: 0 feet

E. At a minimum, the CIPP shall have the following physical properties (at 75 degrees F):

1. Initial flexural modulus of elasticity: 400,000 psi per ASTM D790.

2. Initial flexural strength: 7,000 psi per ASTM D790.

3. Initial tensile strength:

a. 6,500 psi per ASTM D638.

b. For materials that do not allow sufficiently accurate hoop/weft testing per ASTM D638, initial tensile strength may also be substantiated by short-term burst testing results or ASTM D2290 hoop test results.

1.04 SUBMITTALS

A. Comply with Section 01 33 00, Submittal Procedures.

B. Action Submittals:

1. Product information:

a. Provide safety data sheets and manufacturer’s product information for all materials to be incorporated into the Work.

b. Staged work plan indicating segments of rehabilitation.

c. Site utilization and staging plan.

d. Work zone traffic control.

C. Informational Submittals:

1. Design calculations:

a. Detailed design calculations for both the internal and external loading parameters specified herein shall be submitted for review and approval.

33 01 10.72-4 492.023.004

b. The CIPP shall be designed as per ASTM F1216, Appendix X1.3.2 for the Fully Deteriorated Pressure Pipe condition and shall follow the requirements specified herein.

c. All design documents shall be signed and sealed by a Professional Engineer licensed in the State of New York.

1.05 QUALITY ASSURANCE

A. To ensure that the finished product meets the quality control standards set forth by the Owner, all CIPP liners shall be impregnated by a facility that is approved by the product’s Manufacturer (both dry liner and resin).

B. Installer qualifications:

1. Installers shall satisfy all insurance, financial, and bonding requirements of the Owner, and must have at least 10 (ten) years active experience and a minimum of 500,000 linear feet of commercial installation of pressure rated CIPP products in pressure pipe applications.

2. Acceptable documentation supporting the above must be submitted to the Owner.

C. Manufacturer qualifications:

1. The CIPP tube manufacturer, resin impregnation facility, and lining installer all shall operate under a quality management system which is third-party certified to ISO 9001 or other internationally recognized organization standards.

2. Additionally, if the lining installer is not the CIPP tube manufacturer, the lining installer must be formally licensed by the CIPP tube manufacturer to install the product.

3. Proof of ISO certification and licensing status, as applicable, shall be required for approval.

4. The liner impregnation must occur at a permanent wetout facility that is legally permitted with all local, state and federal agencies.

5. A permanent facility is one that is:

a. An existing, free-standing structure with a permanent power supply.

b. A legally permitted facility that is zoned and has a certificate of occupancy for its intended use.

c. Has written approval from a fire marshal for its intended use.

d. Has local or state environmental protection agency approval to operate.

1.06 DELIVERY, STORAGE, AND HANDLING

A. Comply with Section 01 61 00, Common Product Requirements.

B. Store all materials in accordance with the Manufacturer’s recommendations and Local, State, and Federal regulations.

492.023.004 33 01 10.72-5

PART 2 - PRODUCTS

2.01 MATERIALS

A. Type: fully structural, Class IV CIPP liner system utilized for reconstruction of the designated pressure pipe.

B. Manufacturer:

1. Insituform Technologies, LLC

2. AquaPipe

3. UnitedBlue

4. Or approved equal.

C. Fabricate tube from materials which, when cured, will be chemically resistant to internal exposure to drinking water treated with common chemical additives.

D. The tube shall contain no intermediate or encapsulated elastomeric layers.

E. The tube shall contain reinforcement (glass, woven fiber, or equal) to withstand the internal pressure design requirements, in a configuration determined by the manufacturer.

F. The wall color of the interior pipe surface of the CIPP after installation shall be a light reflective color so that a clear detail examination may be made of the final product.

G. Materials that are defective, damaged, or otherwise deemed unacceptable for use prior to installation shall be rejected and replaced at Contractor’s expense.

H. Liner materials damaged during installation shall be repaired or replaced as recommended by the Contractor and approved by the Owner.

PART 3 - EXECUTION

3.01 PREPARATION

A. Notification: The Contractor shall provide at least two weeks written notice to the Owner prior to mobilization.

B. The Owner will isolate the main and the Contractor shall depressurize and dewater the main and manage all drainage from the main.

C. The Owner will notify customers and local fire department following receipt of the Contractor’s notice.

D. The Contractor shall erect all work zone traffic control necessary prior to initiating the Work.

33 01 10.72-6 492.023.004

E. Construction water:

1. The Owner will make available potable water available to the Contractor for liner installation at no cost.

2. Contractor shall practice reasonable water conservation measures.

3. The Owner will provide and the Contractor shall use a reduced pressure zone (RPZ) backflow prevention device on all hydrants used for construction water.

4. The Contractor shall provide necessary piping or flexible hoses, fittings, and approved reduced pressure zone backflow prevention device for connection between fire hydrant and end of pipe section where water is required.

5. Contractor shall manage and lawfully dispose of all construction water at no additional cost to the Owner.

3.02 EXCAVATION

A. Comply with Section 31 23 16, Excavation and Section 31 23 16.13, Trenching.

B. Competent Person:

1. The Contractor shall identify the Competent Person(s) responsible for all excavations and shoring.

2. The Competent Person(s) shall have the authority and the responsibility to immediately cease construction site activities should unsanitary, hazardous or dangerous conditions be observed, and to take prompt corrective measures to eliminate them.

C. Access:

1. The Contractor shall identify the number and location of access points required.

2. The Owner shall provide rights of access to the pipeline.

3. The Contractor shall provide the excavation, pipe work, reconnection and restoration for access points.

D. Opening the host pipe and preparation:

1. Immediately upon opening the host main at the access points and prior to installation of liner, the ends of the adjacent existing water main that are not to be lined at the insertion/extraction points shall be covered/plugged by the Contractor so that no debris shall enter into them during reconstruction work.

2. The Contractor shall remove all internal debris out of the pipeline that will interfere with the installation.

3. Pipes shall be cleaned by the Contractor, as needed, with high-velocity jet cleaners, mechanically powered equipment, cable-attached devices or fluid-propelled devices.

4. Contractor shall lawfully dispose of all debris off-site at no additional cost.

5. The Contractor shall flush the host pipe with clean water to remove loose debris from the pipe surface.

492.023.004 33 01 10.72-7

6. Wherever practical, remove standing water from the inside surfaces of the cleaned pipeline by passing oversized foam swabs through the main or use a progressive expansion method to remove standing water.

7. The specified lining system is independent of the host pipe, and full-length bond is not required; therefore, surface moisture to the manufacturer’s recommendations may be tolerated.

E. Verification of readiness:

1. Verification of readiness to install liner shall be performed by experienced personnel trained in locating services, breaks, obstacles, etc.

2. This may include pipe mandrels or other devices up to and including closed-circuit television or man entry.

3. The interior of the pipeline shall be carefully inspected to determine the location of any conditions that may prevent proper installation of the impregnated tube.

4. A video tape or suitable log shall be kept for reference.

F. Contractor shall control external water leaking back into the pipelines to Manufacturer’s requirements so as not to interfere with the proper installation and cure of the CIPP liner

G. Field measurements:

1. The Contractor shall field verify the length of water main sections to be lined.

2. Contractor shall take accurate inside diameter measures from at least four positions of the host pipe prior to ordering/fabricating the tube.

H. Isolating appurtenances: The Contractor shall isolate or remove air release valves, other valves or other appurtenances that require replacement or that could impede the lining operation from the pressure pipe section prior to liner installation.

I. Television inspection:

1. When required the Contractor shall perform closed circuit television inspection of existing water mains at two intervals:

a. After pipe preparation/prior to water main lining.

b. On completion of the lining process.

2. The Contractor shall provide the Owner with a complete set of all CCTV inspections in a format acceptable to the Owner.

3. The picture quality and definition shall be acceptable for viewing and the files shall be compatible with standard DVD or storage device equipment compatible with Owner specified viewing software.

4. Information in the files shall identify the water main section, direction of taping, and the date of inspection.

5. Where applicable, the CCTV files shall include voice description of the location of any identified defects.

33 01 10.72-8 492.023.004

3.03 RESIN IMPREGNATION

A. The quantity of resin used for tube impregnation as well as the required gap setting under which the liner is to be impregnated shall be specified by the dry liner manufacturer.

B. During saturation, a vacuum impregnation process (or approved equal) shall be used to ensure thorough resin saturation throughout the length of the felt tube.

C. During resin injection, resin samples shall be collected and tested for exotherm time in a “gel test bath”.

D. These tests will serve as a quality control measure for the proper catalyst-resin ratio.

E. Samples shall be collected at the beginning and end of the resin pump based on the resin manufacturer’s recommendations, as well as a minimum of (2) gel tests per tube and a minimum of (1) gel test every 2,000 pounds pumped.

F. Evidence of proper saturation and catalyzation shall be provided with every liner installed on the job.

G. This will be in the form of “gel test” logs as well as wetout report documenting including the following:

1. Dry liner and resin manufacturer LOT numbers

2. Diameter, thickness, length information

3. Actual pounds of resin per liner

4. Recommended gap setting

5. Liner manufacturer’s maximum/minimum/ideal heads/pressures

6. Resin manufacturer’s recommended cure times at minimum interface temperatures.

7. Proper DOT Compliance for shipping of wet-out tubes, and proper truck placarding

H. The leading edge of the resin slug shall be as near to perpendicular as possible.

I. A roller system shall be used to uniformly distribute the resin throughout the tube.

J. If the Installer uses an alternate method of resin impregnation, the method must produce the same results.

K. Any alternate resin impregnation method must be proven and accepted by the liner manufacturer.

L. Owner reserves the right to inspect any and all saturations being performed for the project.

492.023.004 33 01 10.72-9

M. The cost of an initial inspection of the facility and witnessing of a liner impregnation shall be borne by the Contractor and shall take place during normal business hours or a mutually agreed upon time.

N. During the inspection of the facility, the Owner’s representative reserves the right to meet with the local fire marshal onsite. Such a meeting shall be coordinated by the facility.

O. Evidence of a legally permitted facility as specified in Section 1.03-A.3 shall be provided by the contractor during the onsite visit.

3.04 INSTALLATION

A. The wet out tube shall be inserted through an approved access point by means of a pull-in place method or a direct inversion process, or a combination of the two.

B. The installation pressure or head used to extend the liner tube though the entire length of pipe being rehabilitated shall be sufficient to fully extend and expand the tube both circumferentially and longitudinally.

C. The installation head may be provided by water or air pressure.

D. The Manufacturer shall provide installation head envelope for each installation.

E. Before the installation begins, the Contractor shall determine the minimum pressure required to hold the tube tight against the existing pipeline, and the maximum allowable pressure to prevent tube damage.

F. In order to ensure a proper fit of the CIPP tube to the host pipe, the pressure shall be maintained between the minimum and maximum pressures until the installation has been completed.

G. The Manufacturer shall provide installation pressure envelope for each liner.

H. The use of a lubricant during the installation process may be needed to reduce friction.

I. The lubricant used shall be nontoxic and certified for use by the tube manufacturer.

3.05 CURING

A. After tube installation into the host pipe is completed, the curing process shall be initiated.

B. Appropriate curing procedures are to be followed depending on the curing method selected.

C. For photoinitiated curing, a UV-light system is to be utilized.

33 01 10.72-10 492.023.004

D. For heat cured liners, equipment to deliver hot water or steam is to be utilized.

E. The curing process as developed by the Manufacturer shall be followed.

F. The process equipment that is utilized must be certified by the Manufacturer for curing their liner product.

G. Where NSF/ANSI Standard 61 potable water requirements are specified, the curing process must follow the steps laid out as part of the Manufacturer’s certification.

H. For lines where no service connections are included, a Distributed Temperature Sensing (DTS) system that captures a continuous temperature profile along the length of the pipe shall be utilized to monitor curing.

I. The temperature sensing device shall be placed prior to installing the lining system between the impregnated tube and the invert of the existing pipe.

3.06 COOL-DOWN

A. Manufacturer’s directions for cool-down, and in the case of NSF/ANSI Standard 61 certified CIPP the cool-down procedures laid out in the certification, shall be followed.

B. Care shall be taken in the release of the internal head so that a vacuum will not be developed which could damage the newly installed CIPP.

3.07 INSPECTION AND TESTING

A. All testing shall meet the requirements of ASTM F1216, and shall include consideration of AWWA guidelines referenced herein.

B. After the cured lining system has been cooled down, a preliminary television inspection of the newly installed liner may be performed to determine that the liner is properly installed.

C. If the CIPP is to be pressure tested, the post video will be delayed until after the successful testing.

D. Confirm fit and finish meets the visual classification standards of ASTM D5813 and that the liner is free of excess wrinkling or other feature that reasonably may compromise its functional or structural performance design objective.

E. The finished lining shall be continuous over the entire length and be free from visual defects such as foreign inclusions, pinholes and delaminations.

F. Other defects, such as lifts, folds, fins or wrinkles will only be acceptable if it can be proven that the reinforcing fabric is not present in this defect.

492.023.004 33 01 10.72-11

G. The lining shall be impervious and free of any leakage from the pipe to the surrounding ground or from the ground to the inside of the lined pipe.

H. Secure representative samples for testing.

I. Confined samples for testing to confirm the CIPP flexural strength, flexural modulus and thickness in accordance with the requirements of ASTM D5813, D790, and ASTM D3567 for each liner installed.

J. Confined samples may not permit required testing in the hoop direction, which is the critical orientation to confirm strength in pressure pipe liners.

K. In these cases, a flat plate sample shall be prepared to industry standards to accommodate appropriate testing.

L. The tested samples shall meet or exceed the structural properties as per ASTM F1216, or meet or exceed the structural properties specified in the design, whichever are greater

M. The materials and properties testing shall be performed in an ISO 17025 accredited testing facility.

3.08 PRESSURE TESTING & DISINFECTION

A. Hydrostatic pressure testing for water-tightness shall be undertaken on all CIPP sections identified by the Owner in the contract documents or purchase order and shall be completed after the installation but before the inspection and any reinstatement of the pipe’s connections.

B. Perform a minimum one-hour duration hydrostatic pressure test on the lined pressure pipe (per AWWA C623 Section 5.4) at a test pressure of 150 PSI, following the methods of the trenchless industry’s standard defined within ASTM F1216.

C. The hydrostatic test will not be undertaken until the Installer confirms that the liner has been properly cooled.

D. As noted in ASTM F1216, the allowable make-up water during the pressure test shall be 20 U.S. gallons per inch of internal pipe diameter per mile of pipe per day (GIDMD), providing that air has been evacuated from the line prior to testing and the structural pipe lining system has cooled down to ambient temperature.

E. After the one-hour test, the quantified make up water shall be extrapolated to the 24-hour rate for comparison purposes.

F. Visible leakage at termination points shall be eliminated.

33 01 10.72-12 492.023.004

G. If the loss at test pressure exceeds the allowable, the Contractor shall identify the source of the loss and minimize it in a manner acceptable to the Owner.

H. The pressure test for water tightness will be deemed acceptable if that actually measured during the one-hour test is equal to or less than the volume defined in the allowable make up water rate defined in ASTM F1216, Section 8.3.

I. Disinfection:

1. Collect bacteriological samples for total coliform and heterotrophic plate count (HPC).

2. Analyze samples in accordance with latest edition of Standard Methods.

3. Obtain and analyze a minimum of two sets of samples collected 24 hours apart every 1,200 linear feet of pipeline by standard procedures outlined by State and local regulatory agencies.

4. Sampling points shall be representative and accepted by the Engineer.

5. Disinfection and return to service shall follow AWWA C623 section 4.9 and specification 33 13 00 – Disinfection.

6. If minimum samples required above are bacterially positive, disinfecting procedures and bacteriological test shall be repeated until bacterial limits are met.

3.09 WATER MAIN SERVICE CONNECTION REINSTATEMENT

A. Prior to installation of the liner that requires the CIPP to be adhesively bonded at the service connections, appurtenances or the host pipe barrel section, the Contractor shall clean and prepare the pipeline surface to a condition that provides suitable surface finish for bonding in the vicinity of the service connection.

B. Plugging:

1. Prior to installation of the liner, the Contractor shall locate all existing service connections up to 2” in diameter and internally plug by video camera directed internal robotics these corporation valve connections as recommended by the manufacturer.

2. All plugs shall be sized for the respective water taps and shall be designed to prevent resin migration into the service.

3. The service plugs used in this process shall be able to withstand the temperatures and pressures expected during the installation and cure of the

CIPP.

C. After both the lining is complete and the pressure testing is performed, reconnect existing services up through 2” in diameter from the interior of the water main using video camera directed robotics that remove a small, circular section of the liner to expose the corporation valve opening.

D. Reconnections shall be free of burrs, frayed edges, and other restrictions preventing free water flow, and shall be opened to the size of their original

492.023.004 33 01 10.72-13 diameter and to a depth required to completely open the water service connection to the residence served.

E. If required, back flush the reinstated service line from the house or meter.

F. Services that cannot be reinstated internally by robotics because of technical limitations, shall be reinstated externally thru local excavations and shall be done at the Contractor’s expense.

G. These shall be reconnected by use of agency approved mechanical fittings.

H. This may include saddled style services which may be specified for external reconnection.

3.10 CIPP END TERMINATION FITTINGS

A. Terminating CIPP linings can be performed in one of the following manners:

1. If the end of the host pipe is determined to be structurally sound and its inside surface is not deteriorated, the CIPP can be terminated near the end of the host pipe and made watertight using a WEKO® Internal End Seal;

or equal.

2. An elastomeric internal seal is mechanically secured onto the inside surface of the cut back CIPP end and at the end of the host pipe inner surface.

3. The CIPP can be terminated within a short Fiber Reinforced Polymer (FRP), or other material approved by the Owner, pipe spool section having the same inside diameter as the rehabilitated host pipe and a conventional outside diameter matching the closure pipe used to reconnect the piping system.

4. The selected spool section, with appropriate surface preparation, offers a repeatable, high quality adhesive bond to a clean, dry and prepared material inner surface creating a watertight seal and a secure CIPP connection to accommodate all the stresses that may be created by the CIPP installation.

5. If the Contractor, at his discretion, may also elect to install a WEKO® Internal End Seal at the end of the termination spool section to ensure water tightness.

B. Adhesive sealing which attempts to provide a seal between the CIPP and the rehabilitated host pipe wall at the termination will not be accepted.

C. The mechanical end fittings shall be rated by the Manufacturer for the operating pressure specified and be independently tested in conjunction with the proposed liner to ensure a long-term watertight connection, independent of the host pipe.

33 01 10.72-14 492.023.004

3.11 PIPELINE RECONNECTION AND CLEAN-UP

A. After project completion, the Contractor shall return the piping system to service by closure of all access pits with appropriate pipe spools, valves, and other relevant pipe fittings.

B. Backfilling of all access pits shall be performed with care to ensure material is properly placed and not dropped onto closure pipes and fittings until a suitable depth of material is above the closure pipes/fittings.

C. Upon acceptance of the installation, the Contractor will restore the project area affected by the operations.

END OF SECTION