8-RFP 26-115 Scope of Work-Submittal Info.pdf

March 2025

CITY OF ALPHARETTA REQUEST FOR PROPOSALS (RFP)

RFP Number: 26-115 RFP Title: On-Call Pipe Lining Services

RFP SCOPE OF WORK & PROPOSAL SUBMISSION

1. RFP Period of No Communication The “No Communication” period starts on the issue date of this Request for Proposals (RFP) April 30, 2026 and lasts until the City Council meeting for contract award recommendation (or until contract award if this isn’t required to go before council for approval).

No person or company, their employees, representatives, agents, attorneys, etc. will contact the City’s elected officials or any City staff concerning this RFP.

Contacting anyone other than the Procurement Agent named below for this RFP during this time will be reason to remove a proposal from consideration and review.

2. Procurement Agent, Single Point of Contact Debora Westbrook is the designated Procurement Agent and the sole point of contact for this RFP on behalf of the City. Offerors must direct all questions and comments exclusively through the Opportunity Q&A tab prior to the posted Question Due Date on the Bonfire project webpage.

Link to Bonfire: https://cityofalpharetta.bonfirehub.com/ All official communication will be provided through the Bonfire project webpage and Consultants are responsible for monitoring the Bonfire webpage for any status updates, addenda, or the final bid award notice. Direct communication with any other City staff regarding this RFP is not permitted and may result in disqualification.

Debora can be reached at 678-297-6052 or purchasing@alpharetta.ga.us.

City of Alpharetta 2 Park Plaza Alpharetta, GA 30009 Attn: Debora Westbrook, Procurement Agent

3. Please Note: To all current and previous City of Alpharetta vendors, contractors, and consultants.

Regardless of any previous relationship with our City, you must build out your proposal as requested in this RFP.

Do not neglect to provide requested information or details requested simply because you expect that we already know your work.

Your response to this procurement will be reviewed and evaluated solely on the information provided in your response.

https://cityofalpharetta.bonfirehub.com/ mailto:purchasing@alpharetta.ga.us

City of Alpharetta RFP 26-115, On-Call Pipe Lining Services Scope of Work and Proposal Submission

4. RFP Schedule of Events

A. Proposal Close Date, Deadline for Submissions: May 28, 2026, 10:00 AM We may change this date during the RFP process. We will post any change in an addendum.

Review web page for addenda.

B. Link to Bonfire Project Web Page: https://cityofalpharetta.bonfirehub.com/

C. This project web page has the important dates and all project documents for this RFP.

D. No Pre-Proposal Meeting will be held.

E. Enter all questions, comments, requests for information before the Questions Due Date using Message – Opportunity Q&A at the Bonfire project web page.

F. In each question, clearly note the RFP document and section that is in question.

G. We will share any changes or added information from the City by a written addendum publicly posted online with the project procurement documents. Anything assumed as a change that was only communicated in email or verbally does not qualify as a change to the project or procurement information.

H. It is your responsibility to check the project web page for any addenda, other information, status updates, or other messages before finally uploading a proposal. You must respond using any updated information.

I. No public openings are held for an RFP. Review the Bonfire project site after proposal submission deadline for the Record of Receipt to be posted with other project files. It will post after the City’s administrative review has been completed.

5. Our Review of Proposals and Review Criteria:

A. The City will make investigations as we feel necessary to make sure of the Offeror’s ability to provide the supplies or perform the work or services detailed in this RFP.

B. We will first review all proposals to be sure that each proposal includes the basic requirements and information.

C. Some scoring may simply be Pass/Fail. Any proposal that Fails any part or section that is required will be removed from further review and scoring.

D. The Review Team will only receive correct proposals for further evaluation and scoring.

E. Proposals will be scored based on the evaluation criteria noted herein. We may consider accepted industry standards. We may compare all proposals to each other for price, quality, quantity, contract terms, etc. We will use this review and scoring to decide the top-scoring proposal[s] and the best value for our City.

F. The Review Team may decide to create a shortlist of the top-scoring proposals. If so, the shortlisted firms may be invited for a presentation or interview with us, may be asked to set-up a site visit, or may be asked to supply more information for review. We may ask for discussion, negotiation, or a “best and final offer” to finally decide the highest-scoring proposal.

Evaluation Criteria Maximum Points

Firm and Team Experience 25

Example Projects and References 25

Method of Providing Services 27

Local Vendor Preference 3

Cost Proposal and Rate Sheets 20

Total Maximum point score 100

WHAT WE WANT TO DO

1. General Description The City of Alpharetta is accepting proposals from contractors for Trenchless Stormwater Systems Rehabilitation.

It is anticipated that the City will enter into an on-call contract with up to two (2) contractors (one each for CIPP and spincast) for a period of up to one (1) year with four (4) optional one-year renewals for this pipe lining work. One contractor will be selected for cured-in-place pipe lining (CIPP). One contractor will be selected for spincast pipe lining. Offerors should only submit one proposal. Inside the proposal the Offeror must indicate if they are proposing to provide CIPP, spincast, or both.

Work required under this contract shall include furnishing materials, qualified labor, equipment, etc. for trenchless rehabilitation of 12-inch through 120-inch diameter storm water drainage pipes. Work shall further include, but not be limited to, lining storm pipes using the CIPP or spincast, traffic control, TV inspection and cleaning of pipe, structure rehabilitation and/or replacement, rip-rap placement, erosion control measures, landscaping and permanent grassing, road and driveway restoration, and all materials necessary to install the above.

Work will be assigned to the awarded on-call contractor(s) in the form of task orders. It is the city’s intent to identify groups of pipe linings of similar type, size, or location and issue a task order for that grouping to a contractor. These task orders will typically be 5-20 pipes. The contractor(s) shall commence the work with adequate force and equipment within ten (10) calendar days from receipt of a Notice to Proceed and shall continuously pursue the work without interruption to completion. Each task order will have a deadline consistent with the quantity and/or complexity of the work.

The city currently has identified over 500 pipes that need repair. Each year, additional pipes are added to this list based on the result of inspections and investigations. No minimum guarantee of work is inferred with these contracts. The city identifies its capital budget each year and prioritizes work plans based on the needs and demands of the entire city.

2. Scope of Work Lining Types: Each Offeror must clearly indicate in their proposal and in the required Questionnaire the lining type(s) included in their submission. A cost proposal sheet is available for each type.

� Cured-in-Place Pipe (CIPP)– This process involves the installation of a resin-impregnated flexible tube that is either inverted or pulled into the original pipeline/conduit and expanded to fit tightly against said pipeline by the use of water or air pressure. The resin system shall then be cured by elevating the temperature of the fluid (water/air) used for the inflation to a sufficient enough level for the initiators in the resin to affect a thermosetting reaction.

See Appendix A of this document for CIPP Pipe Lining Specifications.

� Spincasting – This process involves a centrifugally spray applied cementitious mortar that is wet cured.

See Appendix B of this document for Spincasting Pipe Lining Specifications

3. Payment and Performance Bonds For all task orders issued to the awarded on‑call contractor(s) where the total estimated work is $100,000 or more, the contractor must furnish both Payment and Performance Bonds in an amount equal to 100% of the total value of the task order and the associated purchase order, in compliance with Georgia Code. O.C.G.A. § 13‑10‑1

FOLLOW THIS OUTLINE

How We Want You to Construct Your Proposal

1. Using Bonfire to Submit Proposal

1.1. This is the link to Bonfire Project Web Page to get our documents and to upload your proposal: https://cityofalpharetta.bonfirehub.com/

1.2. We are accepting all proposals by online response only. You must upload completed proposals online before the closing date and time found in Project Details of the project web page for this RFP.

1.3. Don’t send proposals by mail, fax, or email. We will not accept paper copy proposals.

We will not accept any proposals after the closing time deadline has passed.

1.4. You have not completed your response simply by uploading proposal documents and information. You must successfully upload all the required documents, including filling out any questionnaires, price sheets, or data requests, and then you must click the submit button before the closing time.

1.5. You will receive an email confirmation receipt with a unique confirmation number shortly after you complete your proposal upload. This confirms that you have successfully turned in your proposal with all required information.

1.6. You can update your proposal at any time until the closing time.

1.7. All uploaded items and responses are Sealed and will only be visible by the City after the closing time has passed.

1.8. If the file is ‘mandatory’ or ‘required’, you won’t be able to complete your proposal until you have met all requirements.

1.9. Uploading large documents may take more time, depending on the size of the file(s) and your Internet connection speed.

1.10. Pay attention to the type and number of files we have asked you to upload.

1.11. The largest upload file size is 1000 MB.

1.12. Don’t embed any documents within your uploaded files. They won’t be accessible or evaluated.

1.13. Minimum system requirements: Internet Explorer 11, Microsoft Edge, Google Chrome, or Mozilla Firefox. Java Script must be enabled.

2. Required Proposal Document Formats Each proposal must follow these document formats.

• Failure to follow these formats will reduce our review team’s ability to evaluate and may result in a lower proposal score or in complete removal of a proposal from scoring.

• Format your document text using the following outline. Excluded from noted formatting are cover pages, section separators, company logos, photos, charts, and headers.

o formatted to single space lines, o 10 to 12-point font size, o black font color, and o upload proposal documents in PDF format unless otherwise requested.

o OK, but not necessary, to bookmark PDF files by sections included.

3. Proposal Submittal Instructions

What We Want You To Provide To Us In Your Proposal

• We have outlined information to be submitted in this technical portion of your response.

• The following are required sections for each proposal submitted in response to our request.

• For each section there are certain topics listed to be included.

• Evaluation criteria maximum review points are provided with sections that will be scored.

• Each section must begin on a new page.

• Each proposal must be responsive to all requested information.

• Note and follow any direction concerning page number limits.

Cover Letter Required but not scored.

Limited to two (2) page maximum.

A. Provide a brief company introduction and business profile.

B. Include the following information:

i. Brief business profile.

ii. Office Location.

iii. Number of years in business.

iv. Single point of contact for your proposal

• Name, including business title,

• mailing address,

• telephone number, cell phone number, and

• e-mail address.

Firm and Team Experience 25 Review Points

Limited to six (6) page maximum.

Firm Experience:

Provide a history of your firm, including background of your firm’s executive management and number of years your firm has been in business doing work similar to the scope of work specified in the RFP.

Project Team:

A. Provide information for the project team that would be assigned to the project that would include, but not limited to, the following team members (1 page):

i. Project Manager

ii. Field Construction Manager

iii. Field Staff

B. Provide one-page resumes for the Project Manager and Field Construction Manager, identified above. Each resume should indicate:

i. Individual’s location.

ii. Length of employment with this firm.

iii. Years of experience.

iv. License or accreditation.

v. Examples of specific and relevant experience

Example Projects and References 25 Review Points

Limited to three (3) page maximum for each lining type.

A. Detail three (3) example projects (1 page maximum for each example) for each lining type that best illustrate the offeror’s ability to provide the requested services. Explain how these projects are similar to this request and what the anticipated differences might be.

B. For each example, identify the specific roles played by the project team members.

C. Discuss the scope of the work, the work products provided and the outcome of the project.

D. Provide client reference name, telephone number, and email address.

Method of Providing Services 27 Review Points

Limited to five (5) page maximum.

Offerors should provide a description of their work plan and the methods to be used that will convincingly demonstrate to the City what the Offeror intends to do, the timeframes necessary to accomplish the work, and how the work will be accomplished. Some of the information to include is number of crews, expected equipment, expected lead times for ordering supplies and scheduling the work as well as other information deemed necessary.

4. Cost Proposal and Rate Sheets 20 Review Points

Do not include Cost proposal with other Proposal documents.

Offerors must provide the City with a rate sheet for each lining type included in their proposal. Each rate sheet must list the unit cost for every item. The rate sheets represent the possible types of work that may be required during the contract. All unit prices must include all mobilization, labor, equipment, and materials needed to perform the work.

Unit prices for pipe lining must also include typical point repairs, pre‑ and post‑CCTV inspection, and cleaning (both less than 25 percent full and greater than 25 percent full).

Rates should cover all items needed to complete pipe lining and typical storm structure repair and maintenance. Projects issued under this contract will be priced by selecting items from the rate sheet that, together, represent the full project scope.

In addition to unit pricing, some lump‑sum items will be determined on a project‑by‑project basis. These may include, but are not limited to, erosion control, landscaping, traffic control, special internal or external point repairs, pumping operations, ground‑penetrating radar, and pressure grouting. These items will be included in the proposals issued before each purchase order for lining projects.

We have provided schedules of items for typical sample projects that will be populated using rate sheets provided. The total cost for sample projects will be the basis of scoring for Cost Proposal and Rate Sheets.

5. Optional Form Local Vendor Preference application is not a required document. 3 review points

Only submit if your firm is registered with and holds a current Business License issued by City of Alpharetta.

Only if your company meets the requirements for a City of Alpharetta Local Vendor, provide:

A. the completed application

B. all requested information, documents, and

C. a copy of your current City of Alpharetta business license.

6. Required Forms:

• We have provided the required three forms. You must complete these forms and return them to us with every proposal.

• Below are the required forms for all proposals:

a) IRS Form W-9

b) Bidder’s Disclosures and Certifications

c) E-Verify (Affidavit Verifying Contractor Participation in Federal Work Authorization Program)

All the following must be on the E-verify affidavit.

Federal Work Authorization User Identification Number – this is only five to eight numbers.

No A, B, C’s.

It’s different from your Tax ID, Employer Identification, or Social

Security Number.

It won’t have a combination of letters and numbers.

Date of Authorization – this is when you first signed up and got the E-verify number.

Name of Contractor – your company.

Name of Project – Same as RFP title.

Date, City, and State – when and where this form was signed.

Signature of Authorized Officer or Agent – to be signed.

Printed Name and Title of Authorized Officer or Agent – the person that signed the form.

Notarized with seal.

7. Questionnaire We use a questionnaire to gather important information needed for legal requirements, your acknowledgements, our proposal review, or information needed for writing a contract.

E-Verify side note: Companies return this form to us incorrectly more often than anything else we request in our RFPs.

State of Georgia law requires that we have this completed form before we can review a bid or bid.

A form with errors doesn’t fulfill this requirement.

Top mistakes include:

Wrong number or missing information.

Not notarized.

Not signed.

Wrong form returned.

You will fill out the questionnaire provided.

Questionnaire response types are as follows:

• Authorized signer.

o For Corporations (President or Vice President) or o For LLCs (Member of the LLC) for contract execution in DocuSign: Name, corporate title (‘Member’ for LLC), email address.

o Response Type: text entry.

• For Corporations only, Secretary or Assistant Secretary to attest to signing for contract execution in DocuSign:

o Name, business title, email address, (if not a corporation, enter N/A).

o Response Type: text entry.

• Contact for legal notices-needed for contracting:

o Business name and mailing address, contact name.

o Response Type: text entry.

• Unique Entity ID / identifier used at SAM.gov, o Response Type: alphanumeric entry.

• Note the Employee-Number Category for your company (all locations).

o Select either 500 or more employees, 100 or more employees, or less than 100 employees.

• Lining Type included in Proposal o Select One:

Cured-in-Place Pipe (CIPP) Only

Spincasting Only

Both Cured-in-Place Pipe (CIPP) and Spincasting

• Acknowledge Addenda, o enter the number of addenda received: 0, 1, 2, etc.

• Acknowledge Insurance Requirement, o Response Type: Yes, No entry.

• Acknowledge Payment & Performance Bonds o Response Type: Yes, No entry.

APPENDIX A: CIPP PIPE LINING SPECIFICATIONS

CURED-IN-PLACE (CIPP) LINING SPECIFICATIONS

PART 1 - GENERAL

It is the intent of this section of these Specifications to provide for the reconstruction of pipelines and conduits by the installation of a resin-impregnated flexible tube that is either inverted or pulled into the original pipeline/conduit and expanded to fit tightly against said pipeline by the use of water or air pressure. The resin system shall then be cured by elevating the temperature of the fluid (water/air) used for the inflation to a sufficient enough level for the initiators in the resin to affect a thermosetting reaction.

PART 2 – REFERENCED DOCUMENTS

This Specification references ASTM D5813 (Standard Specification for Cured-in-Place Thermosetting Resin Sewer Pipe) ASTM F1216 (Standard Practice for Rehabilitation of Existing Pipelines and Conduits by the Inversion and Curing of a Resin-Impregnated Tube), and ASTM F1743 (Standard Practice for Rehabilitation of Existing Pipelines and Conduits by Pulled-In-Place Installation of Cured-In-Place Thermosetting Resin Pipe).

PART 3 – QUALIFICATION REQUIREMENTS

The system proposed (materials, methods, workmanship) must be proven through previous successful installations to an extent and nature satisfactory to the Owner and the Engineer that is commensurate with the size of the project being proposed. Since CIPP is intended to have a 50-year design life, only products deemed to have this performance will be accepted.

All products and installers must be pre-approved prior to the formal opening of proposals.

Products and Installers seeking approval must meet all of the following criteria to be deemed commercially acceptable:

For a Product to be considered Commercially Proven, a minimum of 250,000 linear feet and/or 1000 line sections must have been successfully installed. The Manufacturer (Licensor) shall have completed sufficient enough testing to document that the materials and the method(s) of installation proposed will produce the desired long-term performance.

For an Installer to be considered Commercially Proven, the Installer must satisfy all insurance, financial, and bonding requirements of the Owner, and must have at least three years active experience in the commercial installation of the product bid. The Installer’s key personnel shall have at least 100,000 linear feet and/or 300 line sections of successful experience (included in this experience shall be a sufficient quantity of installations in the sizes proposed for this project). The Installer shall be “ISO” certified or demonstrate that he/she has a similar quality assurance system in place.

Documentation for products and installers seeking pre-approved status must be submitted no less than two weeks prior to the proposal due date to allow time for adequate consideration. The Owner will advise of acceptance (or rejection) a minimum of three days prior to the due date. All required submittals must be satisfactory to the Owner.

PART 4 – SUBMITTALS

The Contractor shall submit the following information:

1. Manufacturer’s certification that the materials to be used meet the referenced standards and these specifications.

2. License or certificate verifying Manufacturer’s/Licensor’s approval of the installer.

3. Proposed equipment and procedures for accomplishing the work.

4. Lining Manufacturer’s product data and instructions for resin and catalyst system.

5. Design Calculations for wall thickness designs. To be completed by an engineer proficient in the design of pipeline systems.

PART 5 – MATERIALS

5.1 The Tube. The tube shall consist of one or more layers of a flexible needled felt or an equivalent nonwoven or woven material, or a combination of nonwoven and woven materials, capable of carrying resin and withstanding the installation pressures and curing temperatures. The tube should be compatible with the resin system to be used on this project. The material should be able to stretch to fit irregular pipe sections and negotiate bends.

5.1.1. The tube should be fabricated to a size that, when installed, will tightly fit the internal circumference and the length of the original conduit. Allowances should be made for the longitudinal and circumferential stretching that occurs during placement of the tube.

5.1.2. The tube shall be uniform in thickness and when subjected to the installation pressures will meet or exceed the designed finish wall thickness.

5.1.3. Any plastic film applied to the tube on what will become the interior wall of the finished CIPP shall be compatible with the resin system used, translucent enough that the resin is clearly visible, and shall be firmly bonded to the felt material.

5.1.4 The tube shall be marked for distance at regular intervals along its entire length, not to exceed 5 feet. Such markings shall also include the lining manufacturer’s name or identifying symbol.

5.2. The Resin System. The resin system shall be a corrosion resistant polyester, vinyl ester, or epoxy and catalyst system that when properly cured meets the minimum requirements given herein or those that are to be utilized in the design of the CIPP for this project.

PART 6 – STRUCTURAL REQUIREMENTS

The design thickness of the liner shall be arrived at using standard engineering methodology. ASTM F1216, Appendix X1, has such an acceptable methodology that may be used where applicable. The long-term flexural modulus to be used in the design shall be verified through testing. The long-term modulus shall not exceed 50% of the short-term value for the resin system unless the tube contains reinforcements. In the event that a reinforced tube is utilized, the long-term flexural modulus shall be the percentage of the short-term modulus as determined by the above referenced testing.

The layers of the finished CIPP shall be uniformly bonded. It shall not be possible to separate any two layers with a probe or point of a knife blade so that the layers separate cleanly or such that the knife blade moves freely between the layers. If separation of the layers occurs during testing of the field samples, new samples will be cut from the work.

Any reoccurrence may be cause for rejection of the work.

The finished CIPP shall fit tightly to the host pipeline at all observable points and shall meet or exceed the minimum thickness established by the design process. The materials properties of the finished CIPP shall meet or exceed the following structural standards:

MINIMUM PHYSICAL PROPERTIES

Property

ASTM

TEST METHOD

POLYESTER

SYSTEM

FILLED POLYESTER

SYSTEM

VINYL ESTER

SYSTEM

Flexural Strength D790 4,500psi 4,500psi 5,000psi

Flexural Modulus (Initial) D790 250,000psi 400,000psi 300,000psi

Flexural Modulus (50 Yr) D790 125,000psi 200,000psi 150,000psi

Tensile Strength D638 3,000psi 3,000psi 4,000psi

PART 7 – INSTALLATION

The CIPP shall be installed in accordance with the practices given in ASTM F1216 (for direct inversion installations) or ASTM F1743 (for pulled-in-place installations). The quantity of resin used for the tube’s impregnation shall be sufficient to fill the volume of air voids in the tube with additional allowances being made for polymerization shrinkage and the anticipated loss of any resin through cracks and irregularities in the original pipe wall. A vacuum impregnation process shall be used in conjunction with a roller system to achieve a uniform distribution of the resin throughout the tube.

Temperature gauges shall be placed at the upstream and downstream ends of the reach being lined to monitor the pressurized fluid’s (air or water) temperature. In addition to monitoring the temperature inside the tube, temperature gauges shall be placed between the host pipe and the liner at as many points as is practical to record the heating that takes place on the outside of the liner.

Curing of the resin system shall be as per the Manufacturer (Licensor) of the CIPP product.

The temperatures achieved and the duration of holding the pressurized fluid at those temperatures shall be per the Manufacturer’s (Licensor’s) established procedures.

PART 8 – INSTALLATION RESPONSIBILITIES FOR INCIDENTAL ITEMS

It shall be the responsibility of the Owner to locate and designate all manhole access points open and accessible for the work, and to provide rights of access to these points. If a street must be closed to traffic because of the orientation of the pipeline, the Owner shall institute the actions necessary to do this for the mutually agreed time period. The Owner shall also provide free access to water hydrants for cleaning, installation of the tube, and other work items requiring water.

The Contractor, when required, shall remove all internal debris out of the pipeline that will interfere with the installation of the CIPP. The Contractor shall provide a dumpsite for all debris removed during the cleaning operations. Any hazardous waste encountered during this project will be considered as a changed condition.

The Contractor, when required, shall provide for the flow of water around the section, or sections, of pipe designated for rehabilitation. The bypass shall be made by plugging the line at the existing upstream manhole and pumping the flow into a downstream manhole or adjacent system. The pump and bypass lines shall be of adequate capacity and size to handle the anticipated flow. The Owner may require a detail of the bypass plan to be submitted.

Experienced personnel trained in locating breaks, obstacles, and service connections by close circuit television shall perform inspection of the pipelines. The interior of the pipeline shall be carefully inspected to determine the location of any conditions that may prevent proper installation of the CIPP into the pipelines, and it shall be noted so that these conditions may be corrected. A videotape and suitable log shall be kept for later reference by the Owner.

It shall be the responsibility of the Contractor to clear the line of obstructions such as solids and roots that will prevent the insertion of CIPP. If pre-installation inspection reveals an obstruction such as a protruding service connection, dropped joint, or a collapse that will prevent the installation process, and it cannot be removed by conventional sewer cleaning equipment, then the Contractor shall make a point repair excavation to uncover and remove or repair the obstruction. Such excavation shall be approved in writing by the Owner's representative prior to the commencement of the work and shall be considered as a separate pay item.

A public notification program shall be implemented, and shall as a minimum, require the Contractor to be responsible for contacting each home or business adjacent to the storm sewer and informing them of the work to be conducted. The Contractor shall also provide the following:

A. Written notice to be delivered to each home or business describing the work, schedule, how it affects them, and a local telephone number of the Contractor they can call to discuss the project or any problems that could arise.

B. Personal contact and attempted written notice the day prior to the beginning of work being conducted on the section relative to the residents affected.

PART 9 – QUALITY ASSURANCE PROCEDURES

The Contractor shall prepare a sample for each installation of CIPP. The samples shall be restrained samples for diameters of CIPP less than 18”; and flat plate samples for diameters of CIPP 18” and larger. The flat plate samples shall be taken directly from the wet out tube, clamped between flat plates, and cured in the downtube. The restrained samples shall be tested for thickness and initial physical properties; flat plate samples shall be tested for initial physical properties only.

In addition to physically sampling the finished CIPP, the Contractor shall post-TV the completed work. The television inspection should be used to confirm tightness of the fit of the CIPP to the host pipe and to identify any imperfections. The finished liner shall be continuous over its entire length and be free from visual defects such as foreign inclusions, dry spots, pinholes, and delamination.

PART 10 – PAYMENT

Payment for the work included in this section will be in accordance with the unit prices set forth in the proposal for the quantity of work performed. Progress payments will be made on the work performed during that period.

APPENDIX B: SPIN-CASTING PIPE LINING SPECIFICATIONS

CENTRIFUGALLY SPRAY APPLIED CEMENTITIOUS MORTAR

(SPINCASTING) SPECIFICATIONS

PART 1 - GENERAL

1.1 SUMMARY

This specification document contains the minimum material requirements and installation techniques required for pipe lining rehabilitation/repair to storm drainage and related pipe as may be directed by the appropriate engineer, owner, or utility agency.

1.2 REFERENCES

• ACI 306R-88, Cold Weather Concreting

• ACI 305 R-10, Hot Weather Concreting

• ASTM C157 Length Change

• ASTM C 1202 Chloride Ion Permeability

• ASTM C 109 Compressive Strength

• ASTM C666A Freeze/Thaw Resistance

• ASTM C 309

1.3 SUBMITTALS

A. Contractor shall submit Product Data, SDS and wall thickness design analysis report verifying material thickness based on site assessed condition.

B. Contractor shall submit Quality Assurance documentation referenced in Section 1.4

1.4 QUALITY ASSURANCE

A. The material manufacturer shall have been in the business of manufacturing high performance cement-based repair mortars for over 20 years, maintain a quality assurance program in accordance with ISO 9001:2008, offer technical services and provide a representative at the project site for product training, prior to product installation. Manufacturer shall provide Certificate of Compliance for the proposed cementitious repair system:

1. Meet or exceed specified performance criteria when tested in accordance with specified ASTM test methods.

2. The pipe rehabilitation material shall be a centrifugally spray-applied, basalt fiber reinforced, pre-packaged cement-based mortar requiring only the addition of potable water.

B. The Contractor shall submit to the owner proof that they have been properly trained for the installation of the product for the application/project.

C. The contractor shall submit to the engineer or owner, at least five (5) job references where the contractor has successfully completed similar applications.

D. The contractor shall submit documentation demonstrating that they will execute the work safely and in compliance with applicable OSHA and worker safety standards.

E. Manufacturer shall provide a wall thickness design analysis report based on registered engineer’s input of site conditions. Site conditions must be verified by the engineer, and necessary input provided, in order to properly assess whether or not the pipe is a candidate for in-situ repair and develop design calculations.

1.5 DELIVERY STORAGE & HANDLING

A. All materials shall be delivered to the jobsite in their original, unopened packages, clearly labeled with the manufacturer’s identification, printed instructions and batch code for shelf life and traceability.

B. Store and condition the specified product as per the appropriate product data sheet.

C. For handling instruction, refer to the Safety Data Sheet.

1.6 ENVIRONMENTAL CONDITIONS

Condition and maintain all materials and surfaces that contact pipe rehabilitation material to between 50ºF and 90ºF (10ºC and 32ºC), but optimally between 60ºf and 75ºF (15ºC and 24ºC).

PART 2 - PRODUCTS

2.1 MATERIALS

The pipe rehabilitation material shall be a centrifugally spray-applied, basalt fiber reinforced, pre-packaged cement-based mortar requiring only the addition of potable water. The material shall not contain any chlorides or lime other than amounts contained within the hydraulic cement composition. The manufacturer shall be ISO 9001:2008 certified and have at least 20 years experience in the manufacture of cementitious repair materials. The manufacturer shall offer technical services and provide a representative at the project site for product training prior to product installation upon advance notice.

2.2 MATERIAL PROPERTIES

The pipe lining/rehabilitation material shall meet all the following typical performance criteria when cured at 70ºF (21ºC):

A. Compressive Strength, ASTM C 109

1 Day 3,000 psi (20.7 MPa)

7 Days 6,000 psi (41.4 MPa)

28 Days 8,000 psi (55.2 MPa)

B. Bond Strength, ASTM C 882

7 Days 2,000 psi (14.8 MPa)

C. Length Change, ASTM C 157

28 Days Wet +0.05%

28 Days Dry -0.15%

D. Chloride Ion Permeability, ASTM C 1202

28 Days Very Low

E. Freeze/Thaw Resistance, ASTM C 666A 90% RDM @ 300 cycles

F. Working Time 30 minutes

PART 3 - EXECUTION

3.1 EXAMINATION

Actual site conditions must be verified in order to properly assess whether or not the pipe is a candidate for in-situ repair. Registered engineer/contractor to verify surrounding soil conditions, existing pipe conditions and existing/future loading conditions are suitable for the repair to take place.

3.2 PIPE CONDITIONS

A. Completely remove or mitigate all obstructions that may hinder proper installation of product prior to commencing work.

B. Ensure all active water flow is diverted or stopped prior to commencing work.

C. Remove all loose, delaminated and weak materials including dirt and debris from work area. Prepare pipe surfaces using high pressure water blasting to thoroughly remove all contaminants and bond-inhibiting materials. Severely corroded pipe sections may need replacement.

D. The sections to be repaired should be free of standing water; concrete pipe should be presoaked for 6-8 hours prior to installation.

E. All cracks in pipes identified shall be brought to the attention of the engineer and a determination made of whether the cracks shall be repaired or mitigated as directed prior to installation of the pipe rehabilitation material.

F. All surfaces must be blown clean from surface preparation debris and residue prior to commencing work.

G. Due to the potential corrosion reactivity between cementitious materials and aluminum, all aluminum pipe should be coated with a coal tar type coating (or similar material) prior to application of Cementitious Repair Material.

3.3 APPLICATION

A. All necessary tools, equipment and materials shall be in good condition and as close as possible to the area being repaired.

B. Appropriate clothing and safety equipment shall be worn to avoid breathing dust and prevent eye and skin contact with both dry and mixed repair materials, according to the Safety Data Sheets.

C. An ample source of potable water shall be available for preconditioning, mixing, cleaning and curing.

D. Mix according to manufacturer instructions, using a mortar mixer (stationary barrel with moving paddles).

E. Position spray cast equipment within pipe and begin pumping material to nozzle.

Commence application of material within pipe. As material is cast within the pipe, move applicator head accordingly so as to provide the necessary thickness and uniformity specified with the submitted wall thickness design analysis report.

Continue placement of material to minimize or prevent cold joints except over existing joints. Placement thickness and achievement of specified wall thickness are the responsibility of the contractor.

3.4 CURING

A. Wet cure per manufacturers recommendations or for a minimum of 24 hours after placement or apply curing compound meeting the requirements of ASTM C 309 immediately after placement.

B. Repair material shall be protected from freezing, hydrostatic pressure and vibration as recommended by the manufacturer, until fully cured.

3.5 FIELD QUALITY CONTROL

A. Compressive Strength Test:

1. Test in accordance with ASTM C 109/C109M by making samples of the mortar.

Obtain production samples of mixed mortar from the nozzle or the mixer during the application for compliance with specification for testing at 7 days and 28 days.

2. Provide a minimum of three test specimens for each 200-lf of spun pipe and a minimum of 3 samples in total, whichever is greater, for testing.

3. Provide manufacturer’s original Quality Control results for batch used on site.