B01_Attachment_J02_Specifications.pdf

SPECIFICATIONS

FOR

MISSION COMMUNITY WASTEWATER

COLLECTION SYSTEM IMPROVEMENTS

Umatilla County, Oregon

A COOPERATIVE PROJECT BETWEEN THE

CONFEDERATED TRIBES OF THE UMATILLA INDIAN RESERVATION

AND

INDIAN HEALTH SERVICE

IHS PROJECT

PO-11-L34

Umatilla Wastewater Collection System Repairs: Phase II

PO-11-L34 Table of Contents Page 1 of 1

TABLE OF CONTENTS

Confederated Tribes of the Umatilla Indian Reservation

Technical Specifications

Technical Specifications

Division 1 – General Requirements 01100 Summary of Work 01270 Price and Payment 01310 Project Management and Coordination 01500 Temporary Facilities and Controls 01770 Closeout Procedures 01780 Closeout Submittals

Division 2 – Site Construction 02533 Sewer Flow Control 02534 Sewer Cleaning 02535 Sewer Television Inspection 02536 Sewer Pipe in Situ Repairs 02537 Sewer Pipe Rehabilitation by Cured in Place Pipe

END

PO-11-L34 01100 – Summary Page 1 of 2

SECTION 01100

SUMMARY OF WORK

PART 1 - GENERAL

1.01 SUMMARY

A. This section provides background on the proposed work, briefly summarizes the work to be completed under this Contract, and explains the roles fulfilled by project stakeholders.

B. The work to be performed under this contract shall consist of furnishing all labor, tools, equipment, materials, supplies, and manufactured articles required for the fulfillment of the contract in accordance with the specifications and drawings.

1.02 SUMMARY OF WORK

A. The Confederated Tribes of the Umatilla Indian Reservation (CTUIR) Mission Community sewer system flows into and is eventually treated by the City of Pendleton Wastewater System. This project outcome is to decrease the inflow and infiltration (I&I) of groundwater into the sewer system.

B. The purpose of this contract is to repair and rehabilitate collection system defects which have been identified as contributing to system I&I. The contract describes repairs to sewer mains and sewer service laterals to include:

a. In situ grouting repairs of leaking sewer main joints, service lateral connections, and other defects.

b. Rehabilitation of Asbestos Cement sewer pipe sections with structural defects by Cured in Place Pipe (CIPP) installation.

C. The contract includes Option Bid items for television inspection of sewer service laterals identified as contributing to I&I.

1.03 CONTRACT ROLES

This solicitation will result in a contract between the Federal Government of the United States of America and the Construction Contractor to implement improvements to the Confederated Tribes of the Umatilla Indian Reservation community wastewater collection system. All primary communication shall take place between the Contractor and the Contracting Officer (CO) and the Contracting Officer’s Representative (COR). Communication with the CTUIR is important for site coordination and access, yet only the CO and COR have authority to act on behalf of the Government. The contract roles include the following:

PO-11-L34 01100 – Summary Page 2 of 2

A. Federal Government – All construction improvements are owned by the

Government during the contract performance period. The Federal Government is referred to both Government and Owner throughout these contract documents.

B. Contract Officer (CO) – The CO is the person with authority to act on behalf of the Government and is anticipated to be:

a. TBD, Contract Specialist Division of Engineering Services Indian Health Service 701 5th Avenue, Suite 1600, MS-24 Seattle, WA 98104

(206) 374-7302

C. Contracting Officer’s Representative (COR) – The COR is the primary point of contact for normal work activities. The COR is responsible for maintaining communication between the Contractor and the CO, as well as the CTUIR Public Works Department. The COR evaluates work performance in accordance with the project specifications. The project’s COR is anticipated to be:

a. Derek Hancey, Environmental Engineer Western Oregon Field Office Indian Health Service 1414 NW Northrup St. Suite 800 Portland, OR 97209

(503) 414-7784 Derek.Hancey@ihs.gov

END OF SECTION

mailto:Derek.Hancey@ihs.gov

PO-11-L34 01270 – Price and Payment Page 1 of 3

SECTION 01270

PRICE AND PAYMENT

A. Work covered by this section includes method of measurement and basis of payment for all sections included.

B. All measurements and payments will be based on completed and inspected work items performed in accordance with the drawings and specifications.

C. Payment under each line item shall be full compensation for the following:

1. Labor

2. Materials

3. Equipment

4. Tools

5. Testing

6. Site Restoration

7. Subcontracts and services

1.02 BID ITEMS

A. Wastewater Collection System Repairs

1. Mobilization & Bond Premiums

a. Measurement: Lump sum.

Basis for Payment: Progress Payments for mobilization lump sum will be paid as follows:

I. When five percent of the original contract amount is earned from other bid items, fifty percent of the mobilization item, or five percent of the original contract amount, whichever is less, will be paid.

II. When ten percent of the original contract amount is earned from other bid items, one-hundred percent of the mobilization item, or ten percent of the original contract amount, whichever is less, will be paid.

III. Any portion of the mobilization line item in excess of the ten percent of the original contract amount will be paid after final acceptance.

IV. Bond premiums will be reimbursed according to FAR Clause 52.232-5 Payments Under Fixed-Priced Construction

PO-11-L34 01270 – Price and Payment Page 2 of 3

Contracts after receipt of evidence of payment and be deducted from the mobilization item.

2. Pre CCTV & Cleaning of Sewer Main

a. Measurement: Lineal Foot

b. Payment: Payment shall be full compensation for equipment, labor, and materials to successfully clean and CCTV inspect 8-inch and 10-inch sewer pipe in preparation for CIPP installation.

c. Work related to this payment is addressed in Sections 02534 and 02535.

3. Cutting Protruding Service Taps, Gaskets, and Tree Roots

a. Measurement: Per unit basis (EA)

b. Payment: Payment shall be full compensation for equipment, labor, and materials to successfully cut protruding service tap, gasket, or tree root flush to 8-inch or 10-inch sewer main.

c. Work related to this payment is addressed in Section 02534.

4. Sewer Main In Situ Grouting Repair

a. Measurement: Per unit basis (EA)

b. Basis for Payment: Payment shall be full compensation for equipment, labor, and materials to successfully seal sewer pipe joints, service lateral connections, small holes, small cracks, root penetrations and other defects with chemical grout. The payment shall cover traffic control, sewer bypass pumping, warranty, removal of residual material, provision of records, and pressure testing to verify effectiveness of grout repair.

c. Work related to this payment is addressed in Sections: 02536

5. CIPP Installation for AC Sewer Main

a. Measurement: Per lineal foot basis installed.

b. Payment: Payment shall be full compensation for equipment, labor, and materials for a complete and successful CIPP installation of each diameter of AC sewer main. Payment shall cover provision of temporary toilet facilities to impacted residents, traffic control, sewer bypass pumping, warranty, removal of residual materials, and provision of records.

c. Work related to this payment is addressed in Section 02537

6. 3rd Party CIPP Testing:

a. Measurement: Per unit basis (EA)

b. Payment: Payment shall be full compensation of representative CIPP sample collection, handling, transport, and testing completed by an

PO-11-L34 01270 – Price and Payment Page 3 of 3 independent laboratory.

c. Work related to this payment is addressed in Section 02537

7. Service Reconnections

a. Measurement: Per unit basis (EA)

b. Payment shall be full compensation for labor and materials to successfully reconnect existing live sewer service connections to the installed CIPP.

c. Work related to this payment is addressed in Section 02537

8. Service Connection Sealing

a. Measurement: Per unit basis (EA)

b. Payment: Payment shall be full compensation for labor and materials to successfully seal the interface between the installed CIPP and the host pipe at the location of the service connection.

c. Work related to this payment is addressed in Section 02537

9. Manhole/Wall Interface Sealing

a. Measurement: Per unit basis (EA)

b. Payment: Payment shall be full compensation for labor, equipment, and materials for successful sealing of the interface between the installed CIPP and the manhole wall.

c. Work related to this payment is addressed in Section 02537

10. Post Construction CCTV Inspection

a. Measurement: Per lineal foot

b. Payment: Payment shall be full compensation for equipment, labor, and materials to CCTV inspect 8-inch and 10-inch CIPP installations.

c. Work related to this payment is addressed in Section 02535.

OPTION BID ITEMS:

11. Service Lateral CCTV Inspection

a. Measurement: Per unit basis (EA)

b. Payment: Payment shall be full compensation for equipment and labor to CCTV inspect 4-inch sewer pipe. Payment covers any cleaning of the sewer lateral necessary to conduct the investigation.

c. Work related to this payment is addressed in Section 02535.

PO-11-L34 01310 – Project Management and Coordination Page 1 of 2

SECTION 01310

PROJECT MANAGEMENT AND COORDINATION

A. Section includes the preconstruction conference, construction scheduling, days of work and coordination requirements.

B. Costs associated with project management and coordination are incidental to the contract work and are included in the contract unit and lump sum costs.

1.02 RELATED WORK

A. Section 02537 – Sewer Pipe Rehabilitation by Cured in Place Pipe

1.03 PRE-CONSTRUCTION CONFERENCE AND PROGRESS MEETINGS

A. Prior to beginning construction, but following contract award, the Contractor, Subcontractors and other interested parties must participate in a Preconstruction Conference.

1. The Contractor shall furnish the Performance Work Statement (PWS), as described in Section 02537, at the Preconstruction Conference (Precon).

B. Periodically throughout the contract performance period, the Contractor and Subcontractors shall avail themselves to project progress meetings. These meetings shall be held as often as the parties determine is necessary.

C. Representatives from the following (as applicable) shall attend each meeting:

1. Prime Contractor

2. Subcontractors

3. Contracting Officer’s Representative (COR)

4. Contracting Officer

D. The Contractor is responsible for notifying Subcontractors of meeting time and date.

E. Meeting Minutes:

1. Meeting Minutes will be recorded, typed up in a memorandum and distributed to all attendees by the Contracting Officer or Contracting Officer’s Representative.

PO-11-L34 01310 – Project Management and Coordination Page 2 of 2

2. Any attendee may question or challenge the content of the meeting minutes, in writing to the Contracting Officer, prior to the next project meeting. If the meeting minutes are unchallenged, they will be accepted as an accurate representation of the meeting discussions and decisions.

3. Challenges will be resolved as “old business” at the subsequent project progress meeting.

1.04 DAYS OF WORK

A. Work is not permitted on Saturday, Sunday or Federal Holidays unless written approval from the Contracting Officer is obtained in advance.

B. Request approval a minimum of 24 hours in advance of Saturday and 96 hours in advance of Sunday or Federal Holiday.

1.05 HOURS OF WORK

A. Work will be performed between the hours of 7:00 AM and 5:00 PM local time.

1.06 WEEKLY ACTIVITY SCHEDULE

A. Notify the COR of planned visits by manufacturer’s representatives, testing firms, or other site visitors that may be of significance.

PO-11-L34 01500 – Temporary Facilities and Controls Page 1 of 4

SECTION 01500

TEMPORARY FACILITIES AND CONTROLS

A. The work covered by this section includes all temporary facilities and controls needed to complete work under the Contract in a manner that protects public safety and worker safety, that preserves both public and private property and that appropriately involves local governments, emergency and law enforcement.

A. Section 02533 – Sewer Flow Control B. Section 02535 – Sewer Television Inspection C. Section 02536 – Sewer Pipe In Situ Repair D. Section 02537 – Sewer Pipe Rehabilitation by Cured in Place Pipe

1.03 REFERENCES

A. Federal Highway Administration, Manual on Uniform Traffic Control Devices, Millennium Edition

B. OSHA Standards for the Construction Industry, 29 CFR Part 1926

PART 2 – PRODUCTS (NOT APPLICABLE)

PART 3 - EXECUTION

3.01 GENERAL

A. Provide temporary facilities and controls that are necessary to carry out the requirements of the Contract in a manner:

1. That protects public safety and worker safety in accordance with 29 CFR §

1926, OSHA Standards for the Construction Industry

2. That preserves both private and public property

3. That communicates and cooperates with local authorities and governments.

B. The Owner reserves the right to remedy any neglect on the part of the Contractor as regards the protection of the work and public as follows:

PO-11-L34 01500 – Temporary Facilities and Controls Page 2 of 4

1. The Owner may issue a written notice outlining the Contractor’s public safety neglect.

2. The Contractor must respond to and remedy the situation within 24 hours, otherwise the Owner will remedy the situation and deduct any costs from money due the Contractor.

3. If the Owner determines an emergency situation to exist, the Owner may elect to immediately remedy the situation and deduct any costs from money due the Contractor.

3.02 TEMPORARY SANITARY FACILITIES

A. Provide a minimum of one toilet and one urinal per 40 jobsite workers.

B. Provide a minimum of one toilet and one urinal per household when the work requires that the home be without sewer service for 2 or more hours. Portable toilet facilities must be ADA compliant.

C. Place temporary facilities in an inconspicuous place and maintain in a sanitary and clean condition.

D. Remove temporary sanitary facilities within 48 hours after sewer service is restored to the residence.

3.03 FENCING

A. Protect existing fencing where possible.

B. Provide adequate fencing for safety purposes.

3.04 SIGNS, SIGNALS AND BARRICADES

A. Provide traffic barriers that result in compliance with Occupational Health and Safety Administration 29 CFR Part 1926 and the Federal Highway Administration Manual on Uniform Traffic Control Devices, Millennium Edition.

B. Provide barriers to prevent unauthorized entry to construction areas.

C. Provide barriers to protect adjacent properties from damage.

3.05 TRAFFIC CONTROL

A. Conduct all traffic control operations in accordance with OSHA CFR 29 Part 1926 and the FHWA Millennium Edition of the Manual on Uniform Traffic Control Devices (MUTCD).

B. Submit traffic control plan.

PO-11-L34 01500 – Temporary Facilities and Controls Page 3 of 4

C. Within State or County Rights-of-Way, adhere to the conditions of their permit or franchise.

D. Haul Routes:

1. Consult with authority having jurisdiction in establishing public thoroughfares to be used for haul routes and site access.

2. Confine construction traffic to designated haul routes.

3. Provide traffic control at critical areas of haul routes to regulate traffic, to minimize interference with public traffic.

3.06 ACCESS ROADS

A. Provide detours necessary for unimpeded traffic flow.

B. Provide and maintain access to fire hydrants, free of obstructions.

3.07 PARKING

A. If the site is large enough, the Contractor may park their own and employees' vehicles on the site without charge after obtaining permission from the Owner.

B. If the site is not large enough, the Contractor shall make parking arrangements.

C. Prevent interference with the flow of local traffic.

D. Prevent interference with emergency vehicle functions at all times.

3.08 ROAD SURFACE MAINTENANCE

A. Maintain publicly traveled gravel roads in a condition equal to that at the outset of construction.

1. Fill potholes resulting from construction traffic, as soon as possible.

2. Prevent and mitigate wash boarding due to construction traffic.

B. Maintain publicly traveled asphalt roads in a condition equal to that at the beginning of construction.

3.09 WATER CONTROL

A. Maintain excavations free of water.

B. Provide, operate and maintain pumping equipment as necessary to meet these requirements.

PO-11-L34 01500 – Temporary Facilities and Controls Page 4 of 4

C. Provide water barriers as required to protect site from soil erosion.

3.10 PROTECTION OF INSTALLED WORK

A. Protect installed work and provide temporary and removable protection for installed products.

B. Protect finished surfaces from traffic, dirt, wear, or damage.

C. Prohibit traffic from landscaped areas.

3.11 PROGRESS CLEANING

A. Maintain areas free of waste materials, debris and rubbish.

B. Remove waste materials, debris, and rubbish from site weekly and dispose off-site in a solid waste disposal facility that is licensed to receive the level of waste generated.

3.12 REMOVAL OF TEMPORARY UTILITIES, FACILITIES & CONTROLS

A. Remove temporary above grade or buried utilities, equipment, facilities, and materials.

B. Clean and repair damage caused by installation or use of temporary work.

C. Restore existing facilities and site to original condition if affected by construction.

3.13 MEDICAL SERVICES AND FIRST AID

A. Follow OSHA 29 CFR Part 1926, Subpart D requirements for posting of medical emergency information.

B. Follow OSHA 29 CFR Part 1926, Subpart D requirements for first aid.

1. Ensure that first aid materials are readily available to workers.

2. First Aid Kit Minimum Requirements: Meet ANSI Z308.1-1978.

PO-11-L34 01770 – Closeout Procedures Page 1 of 1

SECTION 01770

CLOSEOUT PROCEDURES

A. Section includes information on closeout procedures and final cleaning.

A. Section 01270 – Price and Payment B. Section 01780 – Closeout Submittals

1.03 CLOSEOUT PROCEDURES

A. Final Inspection:

1. Submit written certification that work is complete in accordance with drawings and specifications and ready for final inspection at least five (5) calendar days prior to final inspection.

2. Perform and coordinate the final inspection with the COR, construction supervisor, and interested parties from the Indian Health Service and Tribe.

3. Final Punch List: Remaining deficiencies will be listed, in a written letter, from the COR.

4. Provide warranties and record documents COR within ten (10) days of final inspection.

B. Final Completion:

1. Final completion will be established once the final punch list deficiencies are remedied and all applicable requirements set forth in the drawings and specifications are met, thereby allowing final payment.

PO-11-L34 01780 – Closeout Submittals Page 1 of 1

SECTION 01780

CLOSEOUT SUBMITTALS

A. This section describes the requirements for closeout submittals including, record drawings, warranty information and general operation and maintenance information.

A. Section 01770 – Closeout Procedures B. Section 02536 – In Situ Sewer Pipe Repair C. Section 02537 – Rehabilitation with Cured in Place Pipe

1.03 DELIVERY

A. Provide all closeout submittals meeting these requirements and any specific requirements of each section.

B. All closeout submittals shall be received by the Government before final payment will be made.

PART 2 – PRODUCTS (NOT APPLICABLE)

PART 3 - EXECUTION

3.01 FINAL REPORT

A. At the conclusion of the work, the Contractor shall submit a final report which includes:

1. A description of work completed.

2. System plan showing location of repairs made and repairs needed.

3. All test result documentation.

3.02 WARRANTIES

A. Submit one copy of warranty from Contractor for all work performed.

B. Submit one copy of warranty information for all materials installed.

PO-11-L34 02533 Sewer Flow Control Page 1 of 3

SECTION 02533

FLOW CONTROL/BYPASS PUMPING

A. Section includes control of sanitary sewer flow as required during internal CCTV inspection, sewer cleaning operations, in situ grouting repairs, excavation point repairs, and cured in place pipe (CIPP) installation.

A. Section 02535 – Sewer Television Inspection B. Section 02536 – Sewer Pipe in Situ Repair C. Section 02537 – Sewer Pipe Rehabilitation by Cured in Place Pipe

PART 2 – PRODUCTS

2.01 MATERIALS AND EQUIPMENT

A. Provide temporary pumps, conduits, temporary toilet facilities, and other equipment to bypass sewer flow.

1. Equip engines with mufflers and/or enclosures to keep noise levels less than 50 decibels, or 10 decibels above ambient noise levels, when measured at the building closest to the noise source.

2. Provide pumps and bypass lines of adequate capacity for flows being bypassed.

B. Maintain sufficient equipment and materials on site to ensure continuous and successful operation of bypass and dewatering systems.

PART 3 – EXECUITION

3.01 SEWER FLOW CONTROL

A. Protection

1. In areas where flows are bypassed, discharge bypass flow to sanitary sewer location approved by the Owner. In the event of accidental sewage spill or unintended discharge, notify the Owner and take necessary action to clean up and disinfect spillage to satisfaction of the Owner.

PO-11-L34 02533 Sewer Flow Control Page 2 of 3

B. Application

1. When sewer line depth of flow at the upstream manhole of the section being worked is above the maximum allowable for television inspection, joint testing and/or sealing, cured in place pipe, the flow shall be reduced to the level shown below by operation of pump stations, plugging or blocking of the flow, pumping and bypassing of the flow, or storage, transportation, and disposal of sewage at a waste facility meeting local, state, and federal regulations for the type of material being disposed. Depth of flow shall not exceed that shown below for the respective pipe sizes as measured in the manholes when performing television inspections, joint testing and /or sealing, and CIPP installation.

(a) Maximum Depth of Flow.........................Television Inspection 4" - 10" pipe .......................................25% of pipe diameter

(b) Maximum Depth of Flow..........................Joint Testing/Sealing 4" - 10" pipe .......................................25% of pipe diameter

(b) Maximum Depth of Flow...........................Cured in Place Pipe 4" - 10" pipe ........................................0% of pipe diameter

B. Plugging or Blocking

1. A sewer line plug shall be inserted into the line upstream of the section being worked. The plug shall be so designed that all or any portion of the sewage can be released.

C. Pumping, Bypassing, Storage, Transportation and Disposal of Sewage.

1. When pumping and bypassing are required the Contractor shall supply the pumps, conduits, and other equipment to divert the flow of sewage around the manhole section in which work is to be performed.

The bypass system shall be of sufficient capacity to handle existing flow plus additional flow that may occur during a rainstorm. The Contractor will be responsible for furnishing the necessary labor and supervision to set up and operate the pumping and bypassing system. If pumping is required on a 24-hour basis, engines, shall be equipped in a manner to keep noise to a minimum. If the Contractor cannot bypass pump to an appropriate downstream manhole, the Contractor shall store and transport sewage to an appropriate disposal point.

D. Flow control precautions.

1. When flow in a sewer line is plugged, blocked, or bypassed, sufficient precautions must be taken to protect the sewer lines from damage that

PO-11-L34 02533 Sewer Flow Control Page 3 of 3 might result from sewer surcharging. Further, precautions must be taken to ensure that sewer control operations do not cause flooding or damage to public or private property being served by the sewers involved.

PO-11-L34 02534 – Sewer Cleaning Page 1 of 3

SECTION 02534

SEWER CLEANING

A. Section includes sewer line cleaning, manhole cleaning, and internal obstruction removal.

B. Related Sections: Refer to the following sections for related work:

1. Section 02535 – Sewer Television Inspection

2. Section 02536 – Sewer Pipe In-Situ Repair

3. Section 02537 – Sewer Pipe Rehabilitation by Cured in Place Pipe

1.02 SYSTEM DESCRIPTION

A. Cleaning shall remove sediment, rocks, debris, roots, grease accumulations, protruding service taps, and obstructions from length of sewer and manholes.

B. Cleaning of sewer and manhole walls shall remove grease, scale, encrustation and loose mortar.

C. Sewer cleaning methods shall be washing with high pressure water or other as approved by the Owner.

D. Sewer cleaning is in preparation for television inspection, in situ grouting repairs, and cured in place pipe (CIPP) installation.

1.03 PROJECT CONDITIONS

A. Access to manholes will be provided by the Owner.

B. The Contractor shall obtain a CTUIR water permit for use of water. Access to hydrants will be provided by the Owner pending Contractor’s compliance with terms of the permit.

PART 2 - PRODUCTS

2.01 MATERIALS

Do not use chemicals without written approval of Owner. Do not use chemicals which may be considered hazardous or detrimental to organisms or equipment of wastewater treatment plant.

2.02 EQUIPMENT

High-Velocity Jet (Hydro-cleaning) Equipment: All high-velocity sewer cleaning equipment shall be constructed for ease and safety of operation. The equipment shall have a selection of two or more high-velocity nozzles. The nozzles shall be

PO-11-L34 02534 – Sewer Cleaning Page 2 of 3 capable of producing flows from a fine spray to a solid stream. The equipment shall also include a high-velocity gun for washing and scouring manhole walls and floor. The equipment shall carry its own water tank, auxiliary engines, pumps, and hydraulically driven hose reel.

2.03 WATER

A. When water from fire hydrants is necessary, apply to the Owner for permission to use potable water source.

B. Provide temporary piping, valves, certified reduced pressure backflow preventers, equipment, and other items for handling potable water and wastewater.

C. Do not utilize water source until it has been approved for use by the Owner.

PART 3 - EXECUTION

3.01 EXAMINATION

Contractor shall be aware of flow conditions, and be able to identify potential access problems to sewer access points.

3.02 APPLICATION

A. Line Cleaning: Clean designated sewer lines using approved methods and equipment.

1. Remove internal obstructions such as roots, gaskets, or protruding service taps by trenchless techniques when obstruction encountered prevents further pipe cleaning, or as specified in the project drawings.

a. Procedures to remove internal obstructions may include use of equipment such as rodding machines, root saws, bucket machines and winches using root cutters, porcupines, and jet machines equipped with hydraulically driven cutters.

2. If cleaning of entire section cannot be successfully performed from one manhole, set up equipment at other manhole and attempt cleaning again.

a. If successful cleaning cannot be performed or equipment fails to traverse entire sewer line section, it will be assumed that major blockage exists.

b. Temporarily suspend cleaning effort and immediately notify the Owner.

c. Upon removal of obstruction, complete cleaning operation.

3. Employ satisfactory precautions to protect sewer line from damage that might be inflicted by improper use of cleaning equipment.

PO-11-L34 02534 – Sewer Cleaning Page 3 of 3

a. Immediately notify the Owner if fresh soil, pieces of pipe, or other visible signs of potential problems occur during cleaning operation.

b. Ensure that water pressure created does not cause damage due to flooding of property being served by sewer section(s) involved.

B. Manhole Cleaning: Where necessary, Include entire manhole interior.

Incorporate into line cleaning operation by scouring walls with high velocity nozzle after pipe segment cleaning operation is complete. Remove all roots.

C. Removal of Debris: All debris resulting from the cleaning operation shall be removed at the downstream manhole of the section being cleaned. Passing material from manhole section to manhole section shall not be permitted.

D. Disposal of Materials: Do not discharge sewage or solids removed from downstream manholes, onto streets, or into ditches, catch basins or storm drains. All solids resulting from the cleaning operations shall be removed from the site and disposed at a waste facility meeting local, state, and federal regulations for the type of material being disposed.

PO-11-L34 02535 – Sewer Television Inspection Page 1 of 3

SECTION 02535

SEWER TELEVISION INSPECTION

PART 1 - GENERAL

1.01 SUMMARY

A. Section includes internal television (TV) inspection of sewer mains.

1. After cleaning, Inspect sewer interior using color closed-circuit television (CCTV) camera, and document inspection on video with audio location and date information, and video title information. Provide hard copy of inspection logs.

B. Related Sections: Refer to the following sections for related work:

1. Section 02533 – Sewer Flow Control

2. Section 02534 – Sewer Cleaning

3. Section 02536 – Sewer Pipe In-Situ Repair

4. Section 02537 – Sewer Pipe Rehabilitation by CIPP

1.02 SUBMITTALS

A. Video: Upon project completion, submit video and logs that include the following as a minimum:

1. Project title

2. Name of Sewer System

3. Time of day

4. Manhole to manhole pipe section

5. Pipe segment length

6. Pipe material

7. Line size

8. Direction of camera’s travel

9. Pipe depth

PART 2 - PRODUCTS

2.01 MATERIALS AND EQUIPMENT

A. Video: DVD format.

1. Audio portion of composite video shall be sufficiently free from electrical interference and background noise to provide complete intelligibility of oral report.

B. Television Inspection Camera(s): Equipped with rotating head, capable of 90-degree rotation from horizontal and 360-degree rotation about its centerline.

1. Minimum Camera Resolution: 400 vertical lines and 460 horizontal lines.

PO-11-L34 02535 – Sewer Television Inspection Page 2 of 3

2. Camera Lens: Not less than 140 degree viewing angle, with automatic or remote focus and iris controls.

3. Focal Distance: Adjustable through range of 6 inches (152 mm) to infinity.

4. Camera(s) shall be intrinsically safe and operative in 100 percent humidity conditions.

5. Lighting Intensity: Remote-controlled and adjusted to minimize reflective glare.

6. Lighting and Camera Quality: Provide clear, in-focus picture of entire inside periphery of sewer.

C. Footage Counter: Measures distance traveled by camera in sewer, accurate to plus or minus 2 feet (0.6 m) in 1,000 feet (305 m).

D. Video Titling: Video equipment shall include genlocking capabilities to extent that computer generated data (such as footage, date, and size) as determined by SDR, can be overlaid onto video, and be indicated on television monitor and permanently recorded on inspection video.

PART 3 - EXECUTION

3.01 SEWER FLOW REQUIREMENTS

A. Do not exceed depth of flow shown in Table 1 for respective pipe sizes as measured in manhole when performing TV inspection.

B. When depth of flow at upstream manhole of sewer line section being worked is above maximum allowable for TV inspection, reduce flow to level shown in Table 1, by plugging or blocking of flow, or by pumping and bypassing of flow as specified.

Comply with requirements of Section 02533, “Sewer Flow Control” to reduce flow.

TABLE 1

Maximum Depth of Flow for TV Inspection

Nominal Pipe Diameter Maximum Depth of Flow 4” - 10” 25 percent of pipe diameter

3.02 SEQUENCE OF WORK

Perform Work in the following sequence:

A. Clean sewer lines and manholes in accordance with requirements of Section 02534, “Sewer Cleaning”.

PO-11-L34 02535 – Sewer Television Inspection Page 3 of 3

B. Perform TV inspection to comply with requirements of this specification.

3.03 INSPECTION REQUIREMENTS

A. Access: The Owner and the Owner’s Representative shall have access to observe monitor and other operations at all times.

B. Video Commentary: Record the following information on audio track of video inspection: narrative of location, direction of view, manhole numbers, pipe diameter and material, date, time of inspection, and location of laterals and other key features

1. Video shall visually display this information at beginning and end of each manhole-to-manhole pipe segment.

2. Video between manholes shall visually display length in feet from starting point of given segment.

C. Sewer Identification: Video and inspection documentation shall include sewer line and manhole identifiers shown on Drawings. After installation of liner, use upstream manhole as identifier in conjunction with distance meter.

D. Image Perspective: Camera image shall be down center axis of pipe when camera is in motion.

1. Provide 360-degree sweep of pipe interior at points of interest, to more fully document existing condition of sewer.

2. Points of interest may include, but are not limited to the following:

defects, encrustations, mineral deposits, debris, sediment, and any location determined not to be clean or part of proper liner installation, and defects in liner that include, but are not limited to bumps, folds, tears, and dimples.

3. Cabling system employed to transport camera and transmit its signal shall not obstruct camera’s view.

E. Sewer Reach Length: Physically measure and record length of each sewer reach from centerline of its terminal manholes.

F. Inspection Rate: Camera shall be pulled through sewer in either direction, but both inspections are to be in same direction. Maximum rate of travel shall be 30 feet (9 m) per minute when recording.

3.04 FIELD QUALITY CONTROL

B. If sewer line is not adequately clean, it shall be recleaned and CCTV-inspected by Contractor at no additional cost.

PO-11-L34 02536 – Sewer Pipe In Situ Repair page 1 of 8

SECTION 02536

SEWER PIPE IN SITU REPAIR

A. This section includes information on in situ sewer pipe repair and sealing of indicated spot repair locations.

B. Packer injection grouting is used to reduce infiltration within the pipeline, seal annular space between liners and host pipes at lateral connections, seal pipe joints, and provide external pipe support.

C. Packer injection grouting shall be accomplished by pressure injection of chemical grout into the soils encompassing the exterior of pipe joint. Chemical grouts shall be designed to be injected into the soil surrounding the pipe and applied in adequate volumes to form an effective seal.

A. Section 02533 – Sewer Flow Control B. Section 02534 – Sewer Cleaning C. Section 02535– Sewer Television Inspection D. Section 02537 – Sewer Pipe Rehabilitation by Cured in Place Pipe

A. NASSCO Suggested Standard Specification for Pressure Testing and Grouting of Sewer Joints, Laterals, and Lateral Connections Using the Packer Method with Solution Grouts

B. F2304-03 Standard Practice for Rehabilitation of Sewers Using Chemical Grouting.

1.04 SUBMITTALS

A. Chemical Grout Information

1. Include manufacturer’s technical data and recommended procedures for storing, mixing, testing, and handling.

2. Description of proposed additives to be used.

B. Identify the manufacturers and models of the packers to be utilized on the project.

http://www.astm.org/cgi-bin/SoftCart.exe/DATABASE.CART/REDLINE_PAGES/F2304.htm?L+mystore+pqfz3159+1195091242 http://www.astm.org/cgi-bin/SoftCart.exe/DATABASE.CART/REDLINE_PAGES/F2304.htm?L+mystore+pqfz3159+1195091242

PO-11-L34 02536 – Sewer Pipe In Situ Repair page 2 of 8

C. Upon completion of each pipe repair, submit to Owner a report showing the following data for each joint, defect, and lateral connection tested, grouted, or attempted to be grouted:

1. Identification of the sewer pipe section including size and type.

2. Location of repair

3. Test pressure used and duration of test.

4. Volume of grout used for each repair

5. Gel set time used

6. Grout mix record including amount and type of additives used

D. Warranty for work performed

2.01 GENERAL

A. Testing Equipment and Grouting Equipment

1. The basic equipment used for mainline pipe joints and for laterals connected to the mainline shall consist of a remotely operated color television camera capable of pan and tilt, joint testing device (referred to hereafter as a packer), and test monitoring equipment. The equipment shall be constructed in such a way as to provide means for introducing air under pressure into the void area created by the expanded ends of the packer against the host pipe and a means for continuously measuring, viewing and recording the actual static pressure of the test medium and grout within the void area only.

2. The device for testing lateral connections shall consist of inflatable mainline end elements and a lateral grouting plug that creates a void area extending a minimum of 24-inches beyond the main connection.

3. Grouting equipment shall consist of the packer, appropriate pumping and hosing systems capable of supplying an uninterrupted flow of sealing materials to completely fill the voids. Grout pumping system shall be sized to deliver a mixed volume of grout at a minimum of 3 gpm and 30 gallons of uninterrupted flow within 10 minutes.

4. Volume of mixed grout pumped must be capable of being measured and recorded for each grouted joint/connection. Generally, the equipment shall be capable of performing the specified operations in sewers where flows do not exceed 25 percent of pipe diameter unless permitted by COR.

5. Connection and lateral service sealing shall be accomplished using the lateral grouting plugs and push packers specified above. Provide back-up bladders for each packer on-site at all times during grouting procedures.

PO-11-L34 02536 – Sewer Pipe In Situ Repair page 3 of 8

B. Chemical Grouts – Required Properties

1. While being injected, the chemical sealant must be able to react/perform in the presence of water (groundwater).

2. The ability to increase grout mix viscosity, density, and gel strength by increased concentration of constituents or the use of approved additives.

3. The cured grout must withstand submergence in water without degradation.

4. The resultant sealant (grout) formation must be homogeneous and prevent the passage of water (infiltration) through the repair.

5. In place, the sealant formation should be able to withstand freeze/thaw and wet/dry cycles without adversely affecting the seal.

6. The grout must not be biodegradable.

7. The cured sealant should be chemically stable and resistant to the mild concentrations of acids, alkalis, and organics found in normal sewage.

8. Packaging of component materials must be compatible with field storage and handling requirements. Packaging must provide for worker safety and minimize spillage during handling.

2.02 PRODUCTS

A. Water based chemical grouts shall have the following characteristics:

1. A minimum of 10% acrylamide base material by weight in the total grout mix. A higher concentration of acrylamide base material is recommended to increase strength or offset dilution during injection.

2. The ability to tolerate some dilution and react in moving water during injection.

3. A viscosity of approximately 2 centipoise, which can be increased with approved additives.

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.

PO-11-L34 02536 – Sewer Pipe In Situ Repair page 4 of 8

6. The ability to increase mix viscosity, density and gel strength by increased concentrations of the mix constituents or by the use of approved additives.

7. Product Manufacturer: Avanti AV-100, Avanti AV-118; or equal.

B. Acrylate base grout shall have the following characteristics:

1. A minimum of 10% acrylate base material by weight in the total grout mix.

2. The ability to tolerate some dilution and react in moving water during injection.

3. A viscosity of approximately 1-3 centipoise, which can be increased with approved additives.

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.

6. The ability to increase mix viscosity, density and gel strength by the use of approved additives.

7. Product Manufacturer: DeNeef AC-400, DeNeef Gelacryl SR, Avanti AV- 160; or equal.

C. Additives

1. At the Contractor's discretion and according to field conditions, additives may be selected and used within the manufacturers recommended quantities.

2. Strengthening Agents

a. For joint grouting, a latex or “diatomaceous earth” additive may be added to increase compressive and tensile strength. The quantity of strengthening agent additive shall be as recommended by the manufacturer and approved by COR. Product Manufacturer: Avanti AV-257 Icoset, DeNeef Reinforcing Agent; or equal.

3. Root Inhibitor

a. When roots are present, for joint and lateral connection joint grouting, a root deterrent chemical shall be added to control root re-growth.

The quantity of inhibitor shall be as recommended by the manufacturer and approved by COR.

PO-11-L34 02536 – Sewer Pipe In Situ Repair page 5 of 8

b. Product Manufacturer: Avanti AC-50W; or equal.

4. Dye - A manufacturer approved water soluble dye without trace metals may be added to the grout tank(s) for visual confirmation.

5. Gel Time Modifier - A gel time extending agent may be used in accordance with the manufacturer’s recommendations to extend gel time as necessary.

6. Freeze/Thaw - In those lines where the grouting material may be exposed to a freeze- thaw cycle, ethylene glycol or other COR approved additive shall be used to prevent chemical grout cracking once set.

7. When using non soluble additives the grout tanks must have mechanical mixing devices to keep the additives in suspension and maintain a uniform solution of grout and additive.

PART 3 – EXECUTION

3.01 CONTROL TESTS

A. Packer Tests – Demonstrate the acceptable performance of air test.

B. Pump Tests – Prior to application of grout, perform a pump test to determine if proper ratios are being pumped from the grout component tanks at the proper rates, and to measure pump rates.

C. Grout Tests – Perform and record a grout gel test in the presence of the COR by recording the gel time of the sample whenever the following conditions occur:

1. At the beginning of each day

2. When new batches of grout are mixed

3. Whenever the temperature in the tanks or ambient temperature have changed by more than 10 degrees Fahrenheit from the previous gel test.

3.02 GROUT PREPARATION

A. Follow the manufacturer’s recommendations for the mixing and safety procedures.

B. Adjust gel time as necessary to compensate for changes in temperature in grout component tanks or hoses. The addition of dilution water to extend gel times is not acceptable unless resulting base grout tank only material exceeds 20% by weight for solution grouts.

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C. During the grouting process, the Grouting Technician shall monitor the grout component tanks to make sure that proper ratios are being pumped. If unequal levels are noted in the tanks, repeat the pump test as described above and correct any defective equipment.

D. Gel times shall be calculated using the following formula unless Contractor experience and/or field conditions dictate otherwise. Any alterations of the gel time formula shall be approved by the COR.

E. Packer/Pipe void shall be defined as the volume between the inflated packer and the inside pipe wall when the packer is inflated per manufacturer recommendations.

3.03 TESTING AND GROUTING DEFECTS

A. Any structurally undamaged joint that structurally fails (breaks) during testing and grouting that are documented on video to have been done under normal pressure conditions shall be the Owner’s responsibility and cost to repair.

B. Grout all circumferential cracks and fractures or other defects as specified or as directed by COR. Any structurally failed pipe or joint that is grouted at the COR’s direction that further fails/breaks during testing and grouting that are documented on video to have been done under normal pressure conditions shall be the Owner’s responsibility and cost to repair. Promptly repair any other sewer damage resulting from the Contractor’s operations at no additional compensation.

C. Procedure for Mainline Sewer Joints, Lateral Joints, and Lateral Connections:

1. Joint testing pressure shall be equal to 0.5 psi per vertical foot of pipe depth plus 2 psi; however, test pressure shall not exceed 10 psi without the approval of the COR.

2. Lateral connection joint testing pressure shall be equal to 0.5 psi per vertical foot of pipe depth plus 2 psi; however, test pressure shall not exceed 10 psi without approval of the COR.

3. The test procedure will consist of applying a controlled air pressure into each isolated void area. Air shall then be slowly introduced into the void area until a pressure equal to or greater than the required test pressure, but in no cases greater than 2 psi above the required test pressure, is observed on the pressure monitoring equipment. Once the designated

PO-11-L34 02536 – Sewer Pipe In Situ Repair page 7 of 8 pressure in the isolated void is displayed on the meter of the control panel, the application of air pressure will be stopped and a 15 second waiting period will commence. The void pressure will be observed during this period. If the void pressure drop is greater than 2.0 psi within 15 seconds, the repair shall be considered to have failed the air test and shall be grouted and retested.

D. Grouting General

1. Grout all joint and lateral connections indicated by the injection method.

This shall be accomplished by forcing grout through a system of pumps and hoses into and through the joints of the sewer from the packer within the sewer pipe. Remove and properly dispose of excess grout from sewer pipe and laterals.

E. Packer Injection Grouting Procedure

1. The packer shall be positioned over the faulty joint by means of a measuring device and the closed-circuit television camera in the line. The packer end elements shall be expanded using controlled pressure to isolate the joint, defect, or connection from the rest of the sewer line.

2. Pump grout materials, in stages if needed, into this isolated area to refusal until the void or surrounding soil has been filled with the goal of applying

0.25 to 0.5 gallons of grout per inch diameter of pipe. Refusal is when the packer void pressure during grout pumping rises by more than 4 psi above void pressure experienced during grout pumping. Refusal may also be revealed when pumping void pressure exceeds the holding pressure of the packer end elements as evidenced by “blow-by.”

3. Upon completion of the injection, deflate the packer to break away from the ring of gel formed by the packer void. The packer shall then be re-inflated and the repair tested at a pressure equal to the initial test. If the joint fails this air test, repeat the grouting procedure at no additional cost to the Owner. Repeat this sequence of air testing and grouting until either the repair is sealed or it is determined that the grout consumption is too high.

4. If a joint, defect, or connection requires more than 0.5 gallons of grout per inch diameter pipe, modify the grouting procedure to perform stage grouting by pumping additional grout in up to 4 gallon increments, waiting 1 gel set cycle time or 1 full minute, whichever is greater. The maximum number of stages shall not exceed two.

F. Lateral Connection Sealing from the Mainline by Packer Injection Grouting

1. When pumping grout, operate the pumps until the mixed grout has flowed through any joint failure, annular space, and into the surrounding soil until a minimum of 8 psi back pressure is achieved while pumping. If the grout

PO-11-L34 02536 – Sewer Pipe In Situ Repair page 8 of 8 pumped exceeds 1 gallon per foot of lateral bladder plus 3 gallons, it will be suspected that there are significant voids outside of the pipe or that the packer is not properly sealed. Re-check that the packer is sealed properly.

If so, modify to stage grouting procedure by pumping additional grout equivalent to 1 gallon plus 0.25 gallon per foot of lateral bladder, waiting 1 minute, and retesting. The maximum number of stages shall not exceed 2.

2. Upon completion of the lateral connection sealing procedure, deflate the lateral bladder, re-inflate and air test the lateral connection to confirm sealing in accordance with the air testing procedure. If the lateral connection fails this air test, repeat the grouting procedure at no additional cost to the Owner. Air tests after grouting laterals containing roots is not required.

3. Confirm lateral flow after sealing of each lateral connection. If a grout blockage exists, the Contractor shall immediately clear the lateral at no additional cost to the Owner. Blockages that are not the result of grouting operations shall not be the responsibility of the Contractor.

PO-11-L34 02537 – Sewer Pipe Rehabilitation By CIPP page 1 of 10

SECTION 02537

REHABILITATION BY CURED IN PLACE PIPE (CIPP)

A. This section specifies sewer pipe rehabilitation using cured-in-place pipe (CIPP) and connection liner/sealing including all labor, materials, and equipment necessary to complete the Work as specified herein.

B. The rehabilitation of pipelines shall be done by 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, joint-less and water-tight new pipe within a pipe. The Contractor is responsible for proper, accurate and complete installation of the CIPP using the system selected by the Contractor.

C. 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 at the manholes or the service connections the Contractor shall seal these areas to stop all leakage using a material compatible with the CIPP as directed by the Owner at the price bid therefore in the Proposal. If leakage occurs through the wall of the pipe the liner shall be repaired or removed as recommended by the CIPP manufacturer.