Sewer System Maintenance Services Bid #25-0604.pdf

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CITY OF BAY CITY

SEALED BID REQUEST

SEWER SYSTEM MAINTENANCE SERVICES BID #25-0604

Bids must be received in the Purchasing Department prior to 2:00 p.m. on the bid due date. All bids received after 2:00 p.m. on the bid due date will be returned to the bidder unopened.

Bids Due: Wednesday, June 4, 2025

Mark Sealed Bid Envelope: Sewer System Maintenance Services Bid #25-0604

The City of Bay City is soliciting sealed proposals for: Sewer System Maintenance Services Bid #25-0604

**NOTE: Per Section 2-284 of the City's Code of Ordinances, all contractors must be deemed a Responsible Contractor by the City of Bay City, prior to submitting a bid on this project. Any Contractor who has not already been deemed a Responsible Contractor and wishes to bid on this project, must submit a Pre-Qualification Questionnaire at least three (3) weeks prior to bid opening. Pre-Qualification Questionnaires are available on the City’s Purchasing webpage and must be submitted with all attachments via mail or email. The determination of Contractor Responsibility will be evaluated by the Pre-Qualification Review Committee. The Purchasing Department will send a Notice of Determination to the contractor by certified mail, stating whether the contractor has been determined to be Responsible or Non-Responsible**.

To obtain an official copy of the bidding documents, please visit www.BidNetDirect.com.

Before the bid due date, it is the vendor’s responsibility to check the BidNet Direct bid system for any Addendums that may have been issued.

Sealed proposals will be received by the City of Bay City at the Purchasing Department, City Hall, 301 Washington Avenue, Room 304, Bay City, MI, until 2:00 p.m. on Wednesday, June 4, 2025

All bids will be publicly opened and read aloud at 2:00 p.m. on Wednesday, June 4, 2025, for the Sewer System Maintenance Services Bid #25-0604 all in accordance with the Bidding Documents, and as otherwise set forth herein.

Local Preference Policy

The City of Bay City utilizes a Local Preference Policy in order to encourage local vendors to provide goods and/or services to Bay City Government. Copies of this policy and the required qualifying affidavit are available on the City of Bay City web site (www.baycitymi.org). Vendors seeking to qualify as local vendors may submit an executed affidavit on an annual basis or return the executed affidavit along with their bid submission. The City of Bay City may, in its sole discretion, accept and consider an affidavit from a vendor seeking to qualify as a local vendor at any time.

The City of Bay City has absolutely reserved the right and prerogative to reject any or all bids as well as to waive any irregularities and informalities. The award of the contract, if it is awarded, will be to a responsible and responsive Bidder whom the City Commission, in its sole discretion and judgment, determines will be in the best interest of the City of Bay City, and which will not exceed the funds available for the project.

NOTE: The City of Bay City does not accept sealed bids via fax or e-mail.

CHECK LIST BEFORE SUBMITTING BID

YES

• Has your company/firm been deemed a Responsible Contractor by the City of Bay City?

• Before the bid due date, it is the vendor’s responsibility to check the BidNet Direct bid system for any Addendums that may have been issued www.bidnetdirect.com.

The full addendum document and any other items noted as such must be returned and included with your sealed bid

• Is the Quotation Request signed by an authorized representative of your company?

• Did you submit your proposal using the Proposal Form that is part of the bidding documents?

• Did you sign the Non-Collusion and Non-Iran Linked Business Affidavits and include them with your sealed bid?

• Did you fill out and submit the debarment certification?

• If applicable, did you read the sample contract/agreement and understand that if you are awarded the contract that the contract will be finalized to include description of work, term and economic specifics of this bid. Do you also understand that the standard terms contained in the sample contract/agreement are in final form (i.e. liability, indemnity, insurance) and not subject to further negotiation.

• Are you submitting your original bid plus ONE (1) COPY as required?

• If your bid is over $50,000.00, do you have a bid security deposit WAIVED in the form of an ORIGINAL bid bond, certified check, bank draft, bank money order, or cashier’s check (If applicable) Multiple year bids must be added together to get your total bid amount If submitting an alternate bid along with your original bid, only one (1) of the above-mentioned items is required.

NOTE: An original bid bond, certified check, bank draft, bank money order or cashier’s check in the amount of five percent (5%) of the total amount of bid must be submitted with any bid in excess $50,000.00.

Facsimiles or copies of a bid bond will not be accepted and the bid will be deemed non-responsive.

• Is the outside of your envelope/package labeled properly including the bid number?

Pursuant to the Charter of the City of Bay City, written contracts involving the expenditure of $50,000.00 or more shall require the approval of City Commission.

The mayor shall have the power to veto any ordinance, resolution, motion, order or other action of the commission within five business days after its passage (Article 4, Section 4.3). The contract must be signed by the mayor and clerk. No employee has the authority to bind the City to any contract.

http://www.bidnet/

CITY OF BAY CITY

Purchasing Department QUOTATION REQUEST 301 Washington Avenue Bay City, MI 48708

Date: April 25, 2025

Sealed bids must be received at the address below NOT later than 2:00 PM Michigan Local Time, Wednesday, June 4, 2025

BIDS not complying with above will be REJECTED and returned to bidder unopened.

BIDDER:

________________________________ Prices for sealed bid must be stated on the Proposal ________________________________ Form of this bid package. If not interested or unable ________________________________ to bid, please RETURN the Statement of No Bid.

Susan Carmien, CPPB, Purchasing Manager Susan Carmien, CPPB, Purchasing Manager

PLEASE NOTE:

• THE CITY OF BAY CITY WILL ONLY ACCEPT COMPLETE BID PACKETS FROM RESPONSIBLE

CONTRACTORS.

• ALL ITEMS LISTED AS “REQUIRED WITH SUBMISSION” AND “REQUIRED WITH SUBMISSION

REGARDLESS OF ANY PREVIOUS SUBMISSIONS” MUST BE IN BID PACKET AND IF ANY ARE MISSING

THE BIDDER’S BID PACKET WILL BE DEEMED NON-RESPONSIVE WITH NO EXCEPTIONS.

ITEM AND DESCRIPTION

The City of Bay City is accepting sealed bids for Sewer System Maintenance Services Bid #25-0604

The term of this contract will be for three (3) years with a one (1) year renewal option upon mutual agreement of both parties.

All sealed bids are to be received at the City of Bay City, Purchasing Department, 301 Washington Avenue, Room 304, Bay City, MI 48708 no later than 2:00 p.m. Michigan Local Time on:

ALL ITEMS LISTED AS REQUIRED WITH SUBMISSION MUST BE INCLUDED WITH BID PACKET

All respondents must conform to the following:

Quotation Request…………………………………………………..…………………..Required with submission

Proposal Form………………………………………………………………………….Required with submission

Specifications

Addendum(s) (if issued)………………………………………………………… ……..Required with submission

Non-Collusion Affidavit…………………………………………………….…………..Required before final award regardless of any previous submissions

Non-Iran Linked Business Affidavit………………………………………….……….. Required before final award regardless of any previous submissions

Instructions to Bidders

Debarment Certification.………………………………………………………….……..Required with submission

General Conditions

Bonds

• Bid (ORIGINAL Bid Bond if bid is $50,000.00 or more (See Instructions to Bidders) WAIVED

• Performance (Prior to issuance of Notice to Proceed)

• Labor & Material (Prior to issuance of Notice to Proceed)

• Maintenance Guarantee (Prior to issuance of Notice to Proceed)

Sample Contract NON-NEGOTIABLE (bid will be deemed non-responsive if vendor cannot agree to terms and conditions)

Statement of No Bid (only if applicable)

QUOTATION REQUEST (CON’T)

The City must consider, at a minimum, each of the evaluation criteria listed in this section in determining best bid, per City Ordinance 2021-14. The City may require contractors or subcontractors to provide additional information by inclusion in bid documents.

Bid documents must require any contractor bidding on the project to submit written responses and other information and documentation regarding the listed criteria and any other criteria specified by the City through the bid documents. The City may request additional information or explanation from any contractor regarding any particular criteria. The bid documents must provide that the City retains the right in its discretion to reject any and all bids.

For each separate bid package, the City in its discretion will weigh the information provided by the contractor regarding the evaluation criteria, as a whole, to determine the best bid. The Purchasing Department must weigh each of the criteria based on a distribution of percentage points on a 100 point scale (see the Responsible Contracting Ordinance Rules and Regulations on the City’s Purchasing webpage).

ALL ITEMS LISTED AS REQUIRED FOR SCORING WILL RESULT IN A SCORE OF ZERO, FOR THE CATEGORY, IF NOT INCLUDED WITH BID PACKET

PRICE

Proposal Form and/or Unit Price Proposal Form Required for scoring

CORPORATE ACCOUNTABILITY

Qualifications of management/supervisory personnel assigned to project Required for scoring Documentation of whether bidders have quality assurance program, if bidder has program Required for scoring

Certification all work will proceed economically, efficiently, continuous without interruption ____________ (initial)

WORKPLACE SAFETY

Ratio of masters or journeypersons to apprentices, if apprentices are to be used on the project Required for scoring Certification workers will have completed relevant hazardous materials awareness training prior to entering the job site ____________ (initial) Experience Modification Rating (EMR) Required for scoring Certification all workers have completed at least OSHA 30-hour training course for safety ____________ (initial)

WORKFORCE DEVELOPMENT

Documentation of pay rates and benefits (health insurance, pension, retirement, etc.) Required for scoring Documentation of Class A apprenticeship program or assessment of skills/qualifications Required for scoring

SOCIAL EQUITY

Statement as to an estimate of percentage of workforce drawn from area residents Required for scoring

Evidence of Equal Employment Opportunity programs Required for scoring Certification bidder is an Equal Opportunity Employer ____________

(initial) One original and one copy of bid……………………………………………………..Required with Submission

**Before the bid due date, it is the bidder’s responsibility to check the BidNet Direct bid system for any Addenda that may have been issued.**

Any questions regarding this bid must be submitted in writing to the Purchasing Department via e-mail no later than 3:00 p.m. one

(1) week prior to bid opening.

Susan Carmien, CPPB Purchasing Manager scarmien@baycitymi.gov (989)894-8115 mailto:scarmien@baycitymi.gov

If awarded the bid, and a contract is fully executed, we herby agree to furnish and invoice above listed materials or services delivered or performed in accordance with the City of Bay City’s specifications, requirements and terms as specified herein at prices specified.

BIDDER’S BUSINESS NAME

SIGNATURE TITLE

PRINT NAME

ADDRESS

PHONE E-MAIL ADDRESS

DATE

PROPOSAL FORM

ITEM DESCRIPTION UNIT UNIT PRICE

Section 1 SANITARY SEWER CLEANING

1 Sanitary sewer cleaning, light, 8” to 72” diameter LF

2 Sanitary sewer cleaning, heavy, 8” to 72” diameter LF

3 Sanitary Sewer reaming/cutting 8” to 72” diameter LF

4 Removal of protruding lateral EA

Section 2 SANITARY SEWER VIDEO INSPECTION

5 Sanitary sewer video inspection, 8” to 72” inch diameter LF

Section 3 SANITARY SEWER SPOT LINER REPAIR

6 Structural spot liner, 8” diameter - 3 feet to 10 feet length EA

7 Structural spot liner, 8” diameter - 10 feet to 20 feet length EA

8 Structural spot liner, 10” diameter - 3 feet to 10 feet length EA

9 Structural spot liner, 10” diameter - 10 feet to 20 feet length EA

10 Structural spot liner, 12” diameter - 3 feet to 10 feet length EA

11 Structural spot liner, 12” diameter - 10 feet to 20 feet length EA

12 Structural spot liner, 15” diameter - 3 feet to 10 feet length EA

13 Structural spot liner, 15” diameter - 10 feet to 20 feet length EA

14 Structural spot liner, 18” diameter - 3 feet to 10 feet length EA

15 Structural spot liner, 18” diameter - 10 feet to 20 feet length EA

16 Structural spot liner, 21” diameter - 3 feet to 10 feet length EA

17 Structural spot liner, 21” diameter - 10 feet to 20 feet length EA

18 Structural spot liner, 24” diameter - 3 feet to 10 feet length EA

19 Structural spot liner, 24” diameter - 10 feet to 20 feet length EA

Section 4 SANITARY SEWER LATERAL CLEANING AND REPAIR

20 Lateral sewer video inspection EA

21 CIPP lateral liner, 6” diameter, up to 60 feet in length LF

Section 5 SANITARY SEWER JOINT TESTING AND SEALING

22 Sanitary sewer pipe joint testing and sealing, 8” to 24” diameter Joint

Section 6 CIPP SEWER PIPE LINING

23 CIPP Sewer Lining, 8” diameter LF

24 CIPP Sewer Lining, 10” diameter LF

25 CIPP Sewer Lining, 12” diameter LF

26 CIPP Sewer Lining, 15” diameter LF

27 CIPP Sewer Lining, 18” diameter LF

28 CIPP Sewer Lining, 21” diameter LF

29 CIPP Sewer Lining, 24” diameter LF

30 CIPP Sewer Lining, 30” diameter LF

31 CIPP Sewer Lining, 36” diameter LF

32 CIPP Sewer Lining, 42” diameter LF

33 CIPP Sewer Lining, 48” diameter LF

34 CIPP Sewer Lining, 54” diameter LF

35 Reinstatement of Lateral Service Connections EA

Section 7 MANHOLE REHABILITATION

36 Calcium aluminate lining VF

37 Epoxy VF

38 CIP Lining VF

39 Seal spot leak in structure EA

40 Seal adjustment rings EA

41 Replace corbel EA

42 Apply Polyurea lining VF

43 Benching Rehabilitation EA

The term of this contract will be for three (3) years with a one (1) year renewal option upon mutual agreement of both parties.

BIDDER MUST STATE:

Name of Company: _______________________________

Signature: _______________________________

Date: _______________________________

Phone: _______________________________

E-Mail: _______________________________

Executive Summary

The City of Bay City, is soliciting proposals from qualified contractors with expertise in the repair and maintenance of sanitary sewer collections systems by means of trenchless technology. The selected contractor will be required to perform maintenance and rehabilitation services on an as needed basis.

The services will be performed throughout the City on a variety of lengths and diameters of the existing storm sewers and sanitary sewer systems. The contract will not be for a specific volume of work or dollar amount. Rather, the contract will be for work on an “as needed basis” as directed by the City of Bay City Wastewater Treatment Plant Director or Sewer Manager

The Contractor will be required to maintain a 24-hour telephone contact line for emergency repair and maintenance work.

Contract Term

The term of this contract will be for three (3) years with a one (1) year renewal option upon mutual agreement of both parties.

Work Items Requested

Sewer Cleaning, including debris and grease removal, obstruction and root cutting, protrusion reaming in both main and lateral pipelines.

Internal video inspection via CCTV video recording to digital files. The Contractor must be able to provide this service for the recording of mainline and lateral sewers including recommendations of specific corrective measures. All inspections shall be completed using

NASSCO Pipeline Assessment and Certification Program (PACP) for identifying observations.

Deliverables shall include a detailed report of the pipes surveyed per the specifications provided later in this document, as well as digital copies or other media acceptable to the City, which is clearly labeled and contains digital files named in accordance with the City’s filing convention.

Section lining of sewer with the use of a resin impregnated fabric inversion liner (CIPP)

Relining sewer sections from manhole to manhole with a resin impregnated fabric inversion liner

(CIPP).

Relining service laterals from the mainline toward the premises with a resin impregnated fabric inversion liner (CIPP) including the installation of a cleanout at the right of way as needed.

Pipe joint testing and sealing utilizing chemical grout.

Relining existing structures for the purposes of inflow/infiltration control and/or structural purposes.

Definitions Used Herein

Proposer/Contractor – entity that is submitting a bid in response to this request. The Proposer must meet the minimum requirements set forth in the balance of this request. May also be referred to as Contractor.

Owner – shall be considered the City of Bay City. May also be referred to as Wastewater

Treatment Plant or Sewer Department.

Contract

A sample contract is enclosed. The successful Proposer will be required to enter into a similar contract with the City of Bay City which will form the understanding and particulars of the agreement for as-needed services outlined in this bid.

Background

The City of Bay City is embarking on a proactive program to maintain and extend the life of their sewer collection system. The proposed projects outlined in this scope of work may be performed in conjunction with other City of Bay City projects such as street paving or other capital improvements. The selected contractor may be required to coordinate their activities with other contractors.

As the system conditions are changing, a set project scope at a specific location would not provide the City with the ability to adjust to these changing conditions.

Therefore, it is the City’s intent to form a long-term relationship with a qualified contractor or contractors to aid in, assist and supplement the City staff in performing the necessary services which are consistent with the goals and objectives of the City’s program of maintenance, repair and management.

Purpose

It is the intent of this request to provide a format, criteria and evaluative process to result in a partnership with a qualified contractor(s) with the ability to perform the requested services in the best interest of the City of Bay City.

Disclaimer

This request or any contract deriving from the evaluation of the documents does not reference, promise, provide or agree to set a quantity of work or a specific value of contract and a specific timeframe. Contractors should not assume any set of anticipated scheduling.

Initiation of Work

The following processes are included for the Proposer’s references as to how work may be determined and the services requested of the selected qualified Contractor.

The City or their agents may in their daily maintenance discover a situation that warrants further investigation that the Proposer will be contacted to perform.

Annual budgeting permits the City to investigate larger areas as a whole and the City staff may need the assistance of the Proposer.

Other investigations such as flow metering programs or the City’s own inspection program determine areas to further investigate, or necessary rehabilitation as warranted.

Quotes/Prices

The City, upon requiring the assistance of the Contractor, will request necessary services based on unit prices as submitted on the proposal form.

Observation of Site

The Contractor shall personally inspect each site of the requested work to clearly understand the conditions. The Contractor shall be responsible to restore the project location to a condition that is equal to or better than the original condition. This shall be considered incidental and included in the unit prices listed.

Payment

Contractor payments will be in accordance with the unit prices listed in the contract. Once the work is approved by the City, final payment including retainage will be processed.

Sub-Contracting

Using a sub-contractor (who must be clearly identified in the submittal) is only acceptable for up to 10% of the total scope of the services. This includes a joint submission by two Proposer’s having no formal corporate connections or linkage. However, in this case one of these

Proposers must be prepared to take over all responsibility for successful performance of the contract and this should be clearly defined in the proposal.

Sub-Contracting to any firm or individual who’s current or past corporate or other interests may, in the City’s opinion; give rise to a conflict of interest in connection with this project will not be permitted.

Where applicable, the names of approved sub-contractors listed in the Document will be included in the contract. No additional sub-contractors will be added, or other changes made to list in the contract without the written consent of the City.

Proposer’s Expenses

Proposers are solely responsible for their own expenses in preparing a response and for subsequent negotiations with the City, if any. If the City elects to reject any or all Proposals, the

City will not be liable to any Proposer for any claims, whether for costs or damages incurred by the Proposer in preparing the Response, loss of anticipated profit in connection with any final

Contract, or any other matter whatsoever.

Liability of Error

While the City has used considerable efforts to ensure an accurate representation of information in this Request, the information contained in this request is supplied solely as a guideline for proposers. The information is not guaranteed or warranted to be accurate by the City, nor is it necessarily comprehensive or exhaustive. Nothing in this request is intended to relieve proposers from forming their own opinions and conclusions with respect to the matters addressed in this request.

Limitation of Damages

Further to the preceding paragraph, the proposer, by submitting a response, agrees that it will not claim damages, for whatever reason, relating to the Contract or in respect to the process, and waives any claim for loss of profit if no agreement is made with the proposer.

Services Requested

• Sewer Cleaning

• Internal video inspection, including evaluation and repair recommendations

• Sectional or spot lining

• Manhole to manhole lining

• Lateral lining including cleanout installation

• Joint testing and sealing with chemical grout

• Manhole Rehabilitation

Additional Information

At any time during the evaluation process, the City may request additional information to properly review and evaluate bid responses. This information should be supplied expeditiously and, in a format similar to the proponent’s initial response. Further, if necessary, the City may request an interview with each, all or a selected few bidders or ask for an oral presentation to the evaluation committee. The City will not be obligated to receive further information, whether written or oral, from any company unless specifically asked for.

SPECIFICATIONS

UTILITIES SEWER FLOW MAINTENANCE

SECTION 33-01-31

33 00 00 SITE UTILITIES

33 01 31 Sewer Flow Maintenance 33 01 32.1 Sewer Pipe Joint Testing 33 01 33 TV Inspection Sewer 33 01 34 Sewer Pipe Joint Sealing 33 01 34.1 Chemical Sealing Materials 33 01 35 Manhole Grout Sealing 33 01 37 Cleaning Manholes 33 01 37.1 Sewer Line Cleaning 33 01 38 Sewer Relining 33 01 38.1 Sectional/Spot Relining 33 05 10 Sanitary Manholes 33 05 14 Rebuild Manhole Structures Section 13 Manhole Rehabilitation

1.1 SUMMARY

A. Furnishing, installing and operating a temporary pumping system to maintain sewer flow as shown on the drawings. System shall bypass the sewer flow as noted herein.

1.2 SUBMITTALS

A. Equipment and piping arrangement;

1. pumps and pipe fittings;

2. alarm system, phone and personnel response plan

PART 2 – PRODUCTS

2.1 EQUIPMENT

Provide complete standby equipment, available for operation as may be required to maintain the bypass system in the event that all, or a part of, the dewatering system becomes inadequate or fails. The by-pass system shall be used to maintain sewage flow that will prevent the raising of sewage levels in the upstream sewers to the extent to not cause basement flooding or other damage.

A. Equipment selection shall be the Contractor’s choice.

B. The noise levels of all equipment operating during nocturnal hours shall meet stage II noise requirements:

1. Engine direct drive units shall be baffled/enclosed to maintain a sound level of less than 69 db @ 23 ft.

2. Engine electric generators shall be baffled/enclosed to maintain a sound level of 65 db @ 23 ft.

C. Also furnish on-site:

1. a second power generation unit

2. a second pumping unit

2.2 REMOTE ALARM

Pumps shall be alarmed for ‘high level, pump failure, and pump on’. The alarm system shall be ‘cell phone-based’ and connected to the Contractor staff.

PART 3 - EXECUTION

3.1 PROCEDURES

A. Adequate pumping and bypass facilities shall be provided and all sewage flow entering the work during any stage of construction shall be pumped. All pumping shall be done without damage to property or structures and without interference with the rights of the public, owners of private property, pedestrians, vehicular traffic, or the work of other Contractors.

B. The Contractor shall take all necessary precautions to assure that no raw sewage is by-passed to a receiving stream as a result of his operations.

3.2 INSTALLATION

A. Contractor shall provide, operate and maintain temporary pumps, piping and appurtenances to maintain raw sewage flow around the existing repair area.

1. Bypass piping shall be placed from the existing upstream manhole to the downstream manhole as shown on the drawings.

2. Bypass pumping shall be placed from the existing pump station wetwell to the existing forcemain.

B. Bypass pumping arrangement shall maintain existing operation level.

3. During work on the existing sewer, bypass pumping shall be maintained and operated 24 hours/day/7 days per week.

C. By-Pass Pumping Capacity

1. Pumping capacity shall have sufficient flow and TDH to bypass each respective sewer segment without backing up.

3.3 CLOSEOUT

A. At completion of the bypass pumping activity, all equipment piping, and appurtenances shall be removed.

B. All ground areas of fuel, oil and sewage spillage shall be excavated and removed off-site.

1. Areas of spillage/drippage shall be restored with topsoil and seed.

END OF SECTION

PART 1 GENERAL SEWER PIPE JOINT TESTING

SECTION 33-01-32.1 – PAGE 1

1.1 DESCRIPTION

A. Related Work Specified Elsewhere:

1. Submittals:

1.2 SUBMITTALS

A. Joint Test Records: During the joint testing work, records shall be kept which include:

1. Calibration test results including PSI & time duration.

2. Identification of the manhole section tested;

3. The test pressure used and duration of test;

4. Location (footage) of each joint tested and location of any joints not tested and reason for not testing;

5. An indication of pass/fail on all joints.

6. Test pressure achieved and maintained for each joint passing the air test;

7. Depth of pipe to surface;

The amount of grout per joint used. (Can be based on levels measured for tan or stroke count.)

PART 2 PRODUCTS

2.01 EQUIPMENT

A. The basic equipment used shall consist of a television camera, joint testing device (known as a packer), and test monitoring equipment. The equipment shall be constructed in such a way as to provide means for introducing a controlled test medium, under pressure, into the VOID area created by the expanded ends of the joint-testing device. The packer will simultaneously permit the flow of sewage. The equipment will also provide a means for continuously measuring the actual static pressure of the test medium within the VOID area created by the inflation of the packer. All pressure measurements shall be made at the void area.

PART 3 EXECUTION

3.1 GENERAL

A. Application: Sewer pipe joint testing is used to test the integrity of individual pipe joints. Testing should not be performed and will not be required on longitudinally cracked or broken pipe. Testing of structurally sound sections of pipe barrel between joints is, however, used as a control test to simulate a good joint.

B. After entering each manhole section with the test equipment, but prior to the commencement of joint air testing, the test equipment shall be positioned on a section of sound sewer pipe between pipe joints, and a demonstration performed as described in Section 3.02. This procedure will demonstrate the accuracy and dependability of the Packer Bladders and Void Sensing Devices, as no joint will test in excess of the pipe capability. If such a test is not positive, leakage from the testing device may be indicated, and may make joint testing invalid. Re-cleaning may be required. In concrete pipe, leakage may also be caused by erosion/roughness at the crown or porosity of the pipe itself. Should it be found that the barrel of the sewer pipe will meet the joint test requirements, then the requirements will be modified to within the pipe integrity limits. In some cases, joint testing (and sealing) cannot be performed.

1. VOID pressure data shall be transmitted electronically from the VOID to the monitoring equipment or video picture of a pressure gauge mounted on the packer and connected to the void area. Example: via an electrical pressure transducer located at the VOID.

2. All test monitoring shall be above ground and, in a location, to allow for simultaneous and continuous observation of the television monitor and test monitoring equipment by the Owner’s Representative.

C. Test Pressure: Joint test pressure shall be 3 psi greater than the groundwater pressure outside the pipe or a minimum of 5 PSI, whichever is greater.

D. Groundwater pressure may be determined by positioning the testing device on a visibly infiltrating joint and measuring the resulting VOID pressure with the VOID pressure monitoring equipment.

3.2 CONTROL TEST PROCEDURE

A. Before any testing commences, an equipment verification test of Packer Bladders and Void Sensing Devices should take place. See Figure 1 for a graphical representation of the testing equipment. This procedure will demonstrate that the equipment is functioning properly, the packer is capable of developing a proper seal against the pipe walls, and the packer is capable of isolating a joint.

B. To ensure the accuracy, integrity, and performance capabilities of the testing equipment, a demonstration test will be performed in an above-ground test cylinder constructed in such a manner that a minimum of two known leak sizes can be simulated (see Figure 1). This technique will apply to pipe sizes of 12-inches and smaller to establish the test equipment performance capability in relationship to the test criteria and ensure that there is no leakage of the test medium from the system or other equipment defects that could affect the joint testing results. For pipe greater than 72” inside testing should be performed in a representation pipe section. If this test cannot be performed successfully, the Contractor shall be instructed to repair or otherwise modify this equipment and perform the test again until the results are satisfactory to the Owner’s Representative. This test may be required at any other time during the joint testing work if requested by the Owner’s Representative to verify the testing equipment is not functioning properly.

C. After entering each manhole section with the test equipment, but prior to commencement of joint testing, the test equipment shall be positioned on a section of sound sewer pipe between pipe joints, and a pipe barrel test shall be performed as specified, above. Should it be found that the barrel of the sewer pipe will not meet the joint test requirements, the requirements will be modified to within the pipe integrity limits.

Figure 1: PIPE JOINT TESTING EQUIPMENT & CONTROL TEST SETUP

1. Joint Testing Device

2. Test Cylinder (PVC pipe of appropriate diameter) from void test liquid supply

3. Void between expanded ends of testing device

4. 1/4 –Turn Stopcock

5. Simulated Leak (.062, .094, .125-inch diameter holes)

6. Air/Water/Sealant hoses & electrical transmission lines

7. Electrical transmission of void pressure from the void

8. Transmission of void pressure

9. Test liquid regulation valve

10. Test liquid flow meter (1/4 GPM to 1 GPM)

11. Air supply

12. Air shut-off valve

***Note: Void Pressure Reading on Test Cylinder Gage must be the same as that observed on the void pressure monitoring equipment at all times during control test.

3.3 AIR TEST PROCEDURE

A. The testing device shall be positioned within the line in such a manner as to straddle the pipe joint to be tested. It should be noted that a specific cable or chain length is designed for each packer size. This specific cable length between the packer and TV camera is what allows each size packer to be positioned with the TV camera onto a joint.

B. The testing device end elements (bladders) shall be expanded so as to isolate the joint from the remainder of the line and create a VOID area between the testing device and the pipe joint. The ends of the testing device shall be expanded against the pipe with sufficient inflation pressure to contain the air within the VOID without leakage past the expanded ends.

C. Air shall then be introduced into the VOID area until a pressure equal to or greater than the required test pressure (3 PSI greater than the groundwater pressure outside the pipe or 5 PSI, whichever is greater) is observed with the VOID pressure monitoring equipment. If the required test pressure cannot be developed (due to joint leakage), the joint will have failed the test and shall be sealed as specified (see Sewer Pipe Joint Sealing).

D. After the VOID pressure is observed to be equal to or greater than the required test pressure, the airflow shall be stopped and the air test line & device vented. If the VOID pressure begins to drop within 30 seconds (due to joint leakage), the joint will have failed the test and shall be sealed as specified (see Sewer Pipe Joint Sealing).

E. Upon completing the testing of each individual joint, the packer shall be deflated with the void pressure meter drop to within +- ½ PSI of initial zero pressure. Should the void pressure meter fail to drop to zero (+- ½ PSI), the Contractor shall be instructed to clean his equipment of residual grout material or make the necessary equipment repairs to provide for an accurate Void Pressure reading. All joints that fail to meet the specified test criteria shall be re-tested and/or sealed until the test criteria can be met in order to receive payment.

F. Any joint failing the air test prior to grouting shall be sealed as specified herein and retested by the same void pressure method and procedures following sealing to verify the effectiveness of the sealing. This procedure will be repeated until the joint passes the test.

Additional sealing and retesting after the initial sealing and retesting shall be at no cost to the Owner.

3.4 LIQUID (WATER) TEST PROCEDURE

A. The testing device shall be positioned within the line in such a manner as to straddle the pipe joint to be tested.

B. The testing device and elements (sleeves) shall be expanded so as to isolate the joint from the remainder of the line and create a VOID area between the testing device and the pipe joint. The ends of the testing device shall be expanded against the pipe with sufficient inflation pressure to contain the test liquid within the VOID without leaking past the expanded ends.

C. Water or an equivalent liquid shall then be introduced into the VOID area until a pressure equal to or greater than the required test pressure is observed with the VOID pressure monitoring equipment. If the required test pressure cannot be developed (due to joint leakage), the joint will have failed the test and shall be sealed as specified (see Sewer Pipe Joint Sealing).

D. The flow rate of the test liquid shall then be regulated to a rate at which the VOID pressure is observed to be the required test pressure. A reading of the test liquid flow meter shall then be taken if the flow rate exceeds ¼- gallon per minute (due to joint leakage), the joint will have failed the test and shall be sealed as specified (see Sewer Pipe Joint Sealing).

PART 1 – GENERAL TV INSPECTION SEWER

SECTION 33-01-33

1.1 SUMMARY

A. This section provides for the closed-circuit television inspection and video taping of existing sewers for the purpose of locating and observing the condition and possible extraneous connections.

B. Related Requirement:

1. 33-01-37.1 Sewer Cleaning.

2. 33-01-38 Sewer Relining.

1.2 REFERENCES

A. Abbreviation:

1. NASSCO – National Association of Sewer Service Companies.

2. PACP – Pipeline Assessment and Certification Program.

B. Definitions:

1. House lead/lateral: Four/or six-inch diameter pipeline [building drain] from the residential/commercial sewer user to the sewer.

2. CCTV: Closed Circuit Television

C. Reference Standard

1. PACP, LACP & MACP

1.3 ADMINISTRATIVE REQUIREMENT

A. Coordination:

1. Contractor shall review his proposed activities with the Sewer/Pump Station operators, street/road staff and/or railroad operations.

B. Schedule:

1. Contractor shall submit to the Owner prior to beginning television inspection a schedule for sequence of sewer lines designated to be televised.

2. Changes from the original schedule, if one, shall be resubmitted monthly.

1.4 CLOSE OUT SUBMITTAL

A. CCTV Inspection Report: Printed inspection reports with (PACP) condition assessment codes shall be prepared by the Contractor to go along with the video inspection and will clearly show the location in relation to the downstream manhole of each point of significance observed during inspection. Points of significance will include wyes, roots, storm sewer connections, broken or collapsed pipes, scale, corrosion, and any other unusual conditions or discernible features. Each will be recorded in a written report and a copy of such report will be supplied to the Owner. The importance of accurate distance measurements is emphasized to enable location of the defects for rehabilitation work. Television Inspection reports shall also include:

1. PACP Condition Assessment Codes.

2. Protruding services with extent of protrusion.

3. Amount of deflections and bellies with station from beginning to end of deflection or belly.

4. Location of broken and/or collapsed pipes with beginning and ending stations, extent of damage, etc.

5. Percent of Ovality in deformed pipes.

6. Depth of sewer.

7. Percent of restriction for sewers with root intrusion, mineral deposits, etc.

B. Video Inspection Recording – CIPP lining:

The purpose of video inspection recordings shall be to supply a visual and audio record of problem areas of the lines that may be replayed. Video recording shall be in DVD format.

Upon completion of the work, Contractor shall deliver one copy of a written condition report and one copy of the video inspection recording to the Owner.

1. DVD Disk: Audio/video route survey submission shall be on DVD media meeting the following specifications:

Media: Portable hard drive

Format: Digital copy

Video Encoding: Highest available bit rate (6-9 Megabit), 60 fields per second interlaced video Audio Encoding: Uncompressed stereo wave or stereo Dolby Digital (256 Kilobit or better) Aspect Ratio: 4x3 (720x480) pixels) *Minimum* No Macrovision or other copy protection encoding: No region code or region code 1.

All video recordings must, by electronic means, display continuously and simultaneously generated transparent digital information to include the date and time of recording, as well as the corresponding upstream and downstream manhole numbers as shown on the Plans. The date information will contain the month, day, and year. For example, mm/dd/yy, and be placed directly below the time information. The time information shall consist of hours, minutes, and seconds, separated by colons. For example, hh:mm:ss. This transparent information will appear on the extreme upper left hand third of the screen. The video shall also include footage from starting manhole, footage numbers must be continuous and accurate. This transparent information must appear in the lower half of the viewing screen.

All recording shall be done during times of good visibility. No recording shall be done during periods of visible for or steam, or when the viewing area is obscured or under water (as outlined below) unless otherwise authorized by the Owner.

Any portion of the Video inspection recording that is of insufficient quality as determined by the Engineer shall be redone by the Contractor at no additional cost to the Owner.

C. Report Indexing/subfiles/

1. Index/subfile: District/lateral

2. Submittal copies.

1.5 SITE CONDITIONS

A. Sewer Flow Control: When sewer line depth of flow at the upstream manhole of the sewer section being worked is above the maximum allowable for television inspection, the flow shall be reduced to the levels shown below by operation of pump stations, plugging or blocking of the flow, or by pumping and bypassing of the flow as specified.

Depth of flow shall not exceed that shown below for the respective pipe sizes as measured in the manhole when performing television inspection.

Maximum Depth of Flow for Television Inspection of sewer 6” – 10” Pipe - 20% of pipe diameter

12” – 24” Pipe 25% of pipe diameter 27” & up Pipe - 30% of pipe diameter

1. Plugging or Blocking: 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. During television inspection flow shall be reduced to within the limits specified above. After the work has been completed, flow shall be restored to normal.

2. Pumping and Bypassing: When pumping and bypassing is 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.

B. Flood Prevention: When flow in a sewer line is plugged, blocked, bypassed, or in any other way restricted, sufficient precautions must be taken to protect the sewer lines from damage that might result from sewer surcharging. Further, precautions must be taken to ensure that sewer flow control operations do not cause flooding or damage to public or private property being served by the sewers involved.

2.01 EQUIPMENT CONTRACTOR

A. Television Camera: The television camera used for the inspection shall be one specifically designed and constructed for such inspection. Camera shall be “Pan and Tilt”, color. Lighting for the camera shall be suitable to allow a clear picture of the entire periphery of the pipe. The camera shall be operative in 100% 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 Owner’s Representative; and if unsatisfactory, equipment shall be removed, and no payment will be made for an unsatisfactory inspection.

B. Equipment: Manual winches, power winches, television cable, and powered rewinds or other devices that do not obstruct the camera view or interfere with proper documentation of the sewer conditions shall be used to move the camera through the sewer line. When manually operated winches are used to pull the television camera through the line, telephones or other suitable means of communication shall be set up between the two manholes of the section being inspected to ensure good communications between members of the crew.

The importance of accurate distance measurements is emphasized. Measurement for location of defects shall be above ground by means of a meter device. Marking on the cable, or the like, which would require interpolation for depth of manhole, will not be allowed.

C. Recording and Playback equipment: The Contractor shall furnish, for the duration of the project, equipment for Owner/Engineer review of “Audio/Video” recordings.

3.1 EXAMINATION

A. Structure Access: Verify that arrangements for pedestrian and equipment access to structures within rear yard easements have been made. Consideration shall be given to the rights of adjacent property owners.

B. Locating the Work: The Contractor shall locate all structures and note sewer diameter and direction of flow. Notify the Owner of detrimental access, structure, and/or sewer conditions which may adversely affect the progress of the Work.

3.2 PREPARATION

A. A Field Measurement: The camera metering (location/distance) device shall be operational prior to commencement of the CCTV Inspection.

1. Accuracy of the distance meter shall be checked by use of a walking meter, roll-a-tape, or other suitable device, and the accuracy shall be satisfactory to the Owner’s Representative.

3.3 ACTIVITY

A. CCTV Operation:

1. After cleaning, the manhole sections shall be visually inspected by means of closed-circuit television. The inspection will be done one manhole section at a time and the flow in the section being inspected will be suitably controlled as specified.

2. The camera shall be moved through the line in the direction of the flow at a moderate rate, stopping at every joint and when necessary to permit proper documentation of the sewer’s condition. In no case will the television camera be advanced at a speed greater than 30 feet per minute.

3. The camera shall stop at each house lead for 5-10 seconds.

4. The camera shall be positioned in the line in such a manner so as it is always as near to the center of the line as possible.

5. Camera shall pan and tilt to view any defects such as protruding services, broken, cracked or collapsed pipes, misaligned joints, structural problems, roots, and miscellaneous abnormal sewer conditions.

B. Contractor Technician:

1. CCTV Inspection Technician shall be a PACP, LACP & MACP certified inspector.

C. CCTV direction changes:

1. If during the inspection operation, the television camera will not pass through the entire manhole section, the Contractor shall set up his equipment so that the inspection can be performed from the opposite manhole.

2. If, again, the camera fails to pass through the entire manhole section, the inspection shall be considered complete, and no additional inspection work will be required.

SEWER PIPE JOINT SEALING

(PACKER METHOD)

SECTION 33-01-34 – PAGE 1

1.1 DESCRIPTION

A. Referenced Sections:

1. Sewer Pipe Joint Testing Main Sewers: 33-01-32.1

2. Chemical Sealing (Grouting) Materials: 33-01-34.1

A. Joint Sealing Records: Included in the records for joint sealing shall be:

1. The test pressure before and after sealing and the duration of the test.

2. Location/Footage of each joint sealed.

3. The volume of grout material used to seal each joint.

4. The volume of grout placed per section.

5. The gel time verified every two hours and noted.

6. The calibration test results in PSI and time duration.

1.3 QUALITY ASSURANCE

A. Prior to commencement of work, the Engineer will be given the opportunity to inspect the equipment to be used. Specifically, the Engineer may measure the internal dimensions of tanks from which sealing materials will be pumped and witness the technique for measuring the volume of sealing materials pumped.

B. Prior to Contract startup, Contractor shall perform test demonstration to verify accuracy of calibrations of pump pressures and liquid amounts injected per pump revolution or per pump stroke prior to commencing sealing operations. If this test demonstration fails to show that readings are consistent & accurate, the Contractor shall be required to make the required repair or adjustments to the equipment and gauges, and retest until the results are satisfactory to the Engineer. This test demonstration may be required at any time during the sealing operation.

1. See equipment test criteria and pressure reactions after seal (see Sewer Pipe Joint Testing Main Sewers).

2.1 MATERIALS

A. Grouting materials shall be as specified in Section Chemical Sealing (Grouting) Materials.

2.2 EQUIPMENT

A. Equipment: The following basic equipment is necessary for completion of the work described in this section:

1. A closed-circuit television system

2. Necessary chemical sealant container

3. Pumps

4. Regulators

5. Valves, hoses, etc.

6. Joint sealing packers for the various sizes of sewer pipes

7. Packer Pipes: The packer shall be cylindrical, have a diameter less than the pipe size, and have cables attached at each end to pull it through the line in conjunction with a closed-circuit camera.

3.1 JOINT SEALING

A. Joint Sealing Procedures: Joints showing visible leakage or joints that have failed the joint test specified (see Sewer Pipe Joint Testing Main Sewers), shall be sealed as specified.

When bell cracks or chips are evident from pipe section joint offsets, sealing may be undertaken where the offset is small enough to allow proper seating of the sealing packer on both sides of the joint to be sealed. Joint sealing shall be accomplished by forcing chemical sealing materials into or through faulty joints by a system of pumps, hoses, and sealing packers. The grout must be injected beyond the joint interface into the soil surrounding the pipe joint. The Core shall be taken when grouting from surface to pipe so that damage or undermining of pipelines does not occur.

The packer shall be positioned over the failed joint by means of a measuring device and the closed-circuit television camera in the line. It is important that the procedure used by the Contractor for positioning the packer be accurate to avoid overpulling the packer and thus not effectively isolating the intended joint. The packer ends (end element sleeves) shall be expanded (as per packer manufacturer recommendations) using controlled pressure.

Expansion shall be regulated by precise pressure…