RP034_24 Inv.pdf

August 14, 2024

REQUEST FOR PROPOSAL

RP034-24

The Gwinnett County Board of Commissioners is soliciting competitive sealed proposals from qualified Contractors for the Provision of Sanitary Sewer Flow Monitoring and Maintenance Services on a Multi-Year Contract for the Department of Water Resources.

Proposals must be returned in a sealed container marked on the outside with the Request for Proposal number and Company Name. Proposals will be received until 2:50 P.M. local time on September 05, 2024 at the Gwinnett County Financial Services - Purchasing Division – 2nd Floor, 75 Langley Drive, Lawrenceville, Georgia 30046. Any proposal received after this date and time will not be accepted.

Proposals will be publicly opened and only names of submitting firms will be read at 3:00 P.M. A list of firms submitting proposals will be available the following business day on our website www.gwinnettcounty.com.

A Webex pre-proposal meeting is scheduled for 10:00 A.M. local time on August 22, 2024. To access, dial 1-408-418-9388, enter Access Code 2336 161 9427. All Contractors are urged to participate.

Questions regarding proposals should be directed to Brittany Bryant, CPPB, Purchasing Associate III at Brittany.Bryant@GwinnettCounty.com or by calling 770-822-7759, no later August 29, 2024 by 3:00P.M. Proposals are legal and binding upon the bidder when submitted. One (1) unbound original (designated as the original) and five (5) bound copies of your proposal should be submitted. In addition to the copies listed above one (1) original Proposal Fee Schedule should be submitted in a separately sealed envelope and should NOT be included in the original proposal or proposal copies submitted.

Successful Contractor will be required to meet insurance requirements. The Insurance Company should be authorized to do business in Georgia by the Georgia Insurance Department and must have an A.M. Best rating of A-5 or higher.

Gwinnett County does not discriminate on the basis of disability in the admission or access to its programs or activities. Any requests for reasonable accommodations required by individuals to fully participate in any open meeting, program or activity of Gwinnett County Government should be directed to the ADA Coordinator at the Gwinnett County Justice and Administration Center, 770-822- 8165.

The written proposal documents supersede any verbal or written prior communications between the parties.

Selection criteria are outlined in the request for proposal documents. Gwinnett County reserves the right to reject any or all proposals to waive technicalities, and to make an award deemed in its best interest.

Award notification will be posted after award on the County website, www.gwinnettcounty.com and companies submitting a proposal will be notified via email.

We look forward to your proposal and appreciate your interest in Gwinnett County.

Brittany Bryant, CPPB Purchasing Associate III http://www.gwinnettcounty.com/ mailto:Brittany.Bryant@GwinnettCounty.com http://www.gwinnettcounty.com/

RP034-24 Page 2

I. Invitation to Submit Proposals

A. The Gwinnett County Department of Water Resources (GCDWR) hereby requests Proposals for Sanitary Sewer Flow Monitoring and Maintenance Services for a four- year contract term.

B. Proposers will be permitted to include subcontractors as part of their proposal, with limitations (see

Section IV of this RFP, Preparation of Proposals, Tab A). If used, sub- contractors must be clearly identified and the reasons and benefits to GCDWR for this arrangement presented.

C. GCDWR will not pay any proposer or sub-contractor for work done in preparation of this proposal submittal.

D. One (1) unbound original (designated as the original) and five (5) bound copies of your proposal should be submitted. All copies of the proposal must be identical. The original proposal must be signed in ink by a company official who has authorization to commit company resources using the forms provided in Appendix F.

Proposals shall be submitted in a sealed envelope/package. Envelope/package shall be addressed to Gwinnett County Purchasing Division, Gwinnett Justice and Administration Center, Second Floor, 75 Langley Drive, Lawrenceville, Georgia 30046 and shall be identified with the proposal number and company name on the outside.

E. The Proposer is to submit, in a separately sealed envelope, one (1) original Proposal Fee

Schedule. The envelope should be labeled with the “FEE SCHEDULE”, Proposers name and RFP number.

F. Sole responsibility rests with the Proposer to ensure that their proposal(s) are received on time at the above stated location.

G. Proposals submitted by alternate means other than those specified in this solicitation will be rejected and disposed of accordingly. This includes proposals sent by facsimile, email, or any other electronic or telegraphic means. If the County receives a proposal through such alternate means, the County does not assume any burden or liability to notify the Proposer that the proposal has been rejected.

Proposers are to follow the instructions outlined in this solicitation and failure of the Proposer to do so may result in the County deeming the Proposer’s submittal as non- responsive. Firms are expected to allow adequate time for delivery of their proposals either by hand delivery, postal service, or other means. Late proposals will not be accepted and will be returned to the Proposer at the Proposers expense.

H. All questions concerning this RFP should be directed IN WRITING by August 29, 2024 by email to

Brittany.Bryant@GwinnettCounty.com. Where appropriate, responses to formal questions will be in writing and will be distributed to all firms on record as having received a copy of this RFP.

Please note that it is the Proposer’s responsibility to confirm with the Purchasing Associate that the

Proposer is on record as having received a copy of this RFP. In each case of formal questions, GCDWR will determine whether a response is appropriate or necessary.

mailto:Brittany.Bryant@GwinnettCounty.com.

RP034-24 Page 3

I. Between the date of the issuance of the solicitation and the date of the final contract award by the

Board of Commissioners, individuals, firms, and businesses seeking an award of a Gwinnett County contract may not initiate or continue any verbal or written communications regarding this solicitation with any County officer, elected official, employee, or other County representative without permission of the Purchasing Associate named in the solicitation. Violations will be reviewed by the Purchasing Director. If determined that such communication has compromised the competitive process, the offer submitted by the individual, firm or business may be disqualified from consideration for award. This process is to ensure that all prospective respondents have been provided with the same level of knowledge relative to the RFP, as well as ensuring any additional data is made available to all proposers.

J. Submitted proposals and all documentation regarding the proposals will not be made available to the public until such time that an official action has been taken by the Gwinnett County Board of

Commissioners to award or reject this solicitation. All proposals and supporting materials, as well as correspondence relating to this RFP, become property of Gwinnett County when received and will be subject to the Georgia Open Records Act.

K. All applicable State of Georgia and Federal laws, City and County ordinances, licenses and regulations of all agencies having jurisdiction shall apply to the proposers and services throughout and incorporated herein by reference. The Agreement with the selected firm, and all questions concerning the execution, validity or invalidity, capacity of the parties, and the performance of the

Contract, shall be interpreted in all respects in accordance with the Charter and Code of Gwinnett

County and the laws of the State of Georgia.

II. Instructions to Proposers

A. Proposer Qualifications:

No proposal shall be accepted from, and no contract will be awarded to any person, firm, or corporation that is in arrears to Gwinnett County, upon debt or contract that is a defaulter, as surety or otherwise, upon any obligation to Gwinnett County or that is deemed irresponsible or unreliable by Gwinnett County. Proposer shall be required to submit evidence satisfactory to the County that they have a practical knowledge of the particular service proposed upon and that they have the necessary financial resources to provide the proposed service category called for as described in Section III of this RFP “Description of Services”.

B. It is strongly suggested that the Proposer visit the Flow Monitoring and Rain Gauge sites during the proposal period to develop a complete and thorough understanding of the scope of work of this flow monitoring contract. The Proposer shall not receive additional compensation for installation, operation, and maintenance expenses that were not anticipated during the preparation of cost proposals. Map files have been created for the sewer network that show the locations of the long-term flow monitoring sites.

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These files have been posted to the County’s Department of Water Resources ftp site for download and review by potential responders. The ftp site can be accessed using the credentials below:

These sections of the System Specifications can be accessed through the following download for ftp site: WinSCP :: Official Site :: Free SFTP and FTP client for Windows. This is a free download.

Once WinSCP is installed, open the Wizard enter the following information in the fields required:

Host Name: ftp.gwinnettcounty.com Port Number: 22 Username –DWR_FieldOp Password - W@t3rFLd Directory - \FlowMonitoring\GC Collection System Shapefile.zip

C. Contract

The successful Proposer will be expected to sign a Contract developed by Gwinnett County (Sample Contract included in Appendix G). The proposal should contain a statement that the Proposer has carefully reviewed the agreement, can meet all insurance and other requirements, and if selected, will sign the agreement. No modifications to the agreement will be permitted. This information shall be included in the cover letter referenced in Section IV of this RFP “Preparation of Proposals”.

Selected Proposer(s) are required within ten (10) days of the Notice of Award to provide the following:

Certificate of Insurance specified in proposal Two (2) sets of properly executed contract documents.

III. Description of Services

The intent of this Contract is to attain consistent, high quality sanitary sewer flow monitoring and rain gauge data, with which to make operational and capital decisions. There are currently 162 permanent monitors in the County’s gravity sewer system, 29 rain gauge stations and 27 micro-monitoring meters that are moved throughout the year. A schematic of the system and existing flow monitors is provided as Appendix B. Appendix C is a listing of all existing flow monitors and Appendix D is a listing of the existing rain gauge stations. Appendix E is a map with these locations shown. The Proposer provided services under this contract will include the following core components:

1. Provision, installation, and maintenance of sanitary sewer flow monitors and rain gauges, to be owned by Proposer.

2. On-going quality control/quality assurance services on flow monitoring and rain gauge data.

3. Provision of data hosting and delivery services; and

4. Optional provision of an analytical software tool that would quantify inflow and infiltration based on the flow monitoring data.

Technical specifications for these components are included in Appendix A.

ftp://ftp.gwinnettcounty.com/

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IV. Preparation of Proposals

Each Proposer shall read all sections of this RFP including the instructions, and all attachments hereto. Failure to do so will be at the Proposer’s risk. The Lead Proposer must sign the proposal with their usual signature by an authorized representative and shall give their full business address.

Proposals should be letter size, single-sided written pages using an Arial font size no smaller than 12 point. Figures, charts, and exhibits should be included under the appropriate tabs as described below.

The following information should be submitted in the proposal in the format as specified herein.

• Cover Letter A proposal cover letter should be provided presenting an Executive Summary of the proposer’s proposal. The cover letter should contain a statement that the Proposer has carefully reviewed the sample Contract, can meet all insurance and other requirements, and if selected, will sign the agreement. Please limit this cover letter to 2 pages or less.

• Tab A – Lead Proposer Identification

The Lead Proposer is defined as the company that will perform work valued at greater than 50% of the total contract dollar value. The Lead Proposer must perform the services related to installation, provision and maintenance of the flow monitors and rain gauges. Data delivery, hosting and analysis services may be subcontracted.

Include the following information for the Lead Proposer:

1. Full legal name.

2. Corporate ownership and history.

3. Affiliates and subsidiaries.

4. Operating philosophy.

5. Principal business office, local office locations, and locations responsible for coordinating services for this contract.

6. Provide services to be performed by the Proposer, as well as capabilities and strengths of the Lead Proposer.

Please limit this information to 2 pages or less.

• Tab B – Sub-Contractor Identification

No deduction in scoring will be incurred if a firm does not submit a Sub-Contractor. No benefit will be provided to a firm that does submit a Sub-Contractor.

Include the following information for the sub-contractor:

1. Full legal name.

2. Corporate ownership and history.

3. Affiliates and subsidiaries.

4. Operating philosophy.

5. Principal business office and local office locations will wholly or partially support the delivery of any and all services specified by this RFP.

6. Provide services to be performed by the Sub-contractor, as well as capabilities and strengths of the Sub-contractor.

7. Describe the working history and relationship of the Sub-contractor(s) with the Lead

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Proposer. Indicate if the Lead Proposer has ever worked with the Sub-contractor(s) previously including when, where and the services provided by the Sub-contractor(s).

8. Identify roles and specific areas of responsibility of the Lead Proposer and Sub-contractor(s) for this contract and include reasons and benefits of this arrangement to GCDWR.

Please limit this information to 2 pages or less.

• Tab C - Experience of Lead Proposer and Sub-Contractor on Similar Contracts

Briefly describe the relevant past experience of the Lead Proposer and Sub-contractor (if applicable) in performing sanitary sewer flow monitoring and maintenance projects of similar size and scope including experience in performing site selection, installation and maintenance services for wastewater utilities. The Proposer and Sub-contractor Team shall provide a minimum of three (3) relevant Contract Experience & Reference forms (see Appendix F, Form C-1).

For each reference project, the Lead Proposer and/or Sub-Contractor should provide the following required information to include, but not be limited to:

• Contract Name, Location and Owner

• Description of services and dates of service

• Owner contact information (email and phone)

• Number and type of flow monitors and rain gauges used and duration of monitoring period, frequency of calibrations, typical issues encountered

• Dollar value of contract

• Data analysis and hosting tool used

• Indicate the people that worked on the project that will be assigned to this project

GCDWR will attempt to contact the listed individuals no more than three times. Failure of the Contact to respond or refusal to confirm the information provided in the proposal will be considered as an invalid reference project.

All contract experience sheets provided must be either currently active contracts or have been completed within the past six years. Include a Contract Experience & Reference form (see Appendix F) for each contract in this tab. Please limit this information to 10 pages or less.

• Tab D - Key Staff Qualifications, Experiences, Location and Availability Provide an overall organization chart for the proposed services. The proposer should identify the roles/positions/responsibilities of each proposed team member (including staff from Sub-contractor). The proposed organization chart should include the Client Services Manager, Project Manager, Field Crew Chief, Program Analysts, and other relevant staff. Provide a table to show all key members of the project team, their degree, professional registrations, years of experience, levels of responsibility, office location, and availability. This table should also include two representative projects for each key member, their roles and responsibilities, and their home office locations. Resumes of key personnel should be provided in this section.

Please limit this information to 15 pages or less.

• Tab E – Services Understanding and Technical Approach

Describe the Proposer’s understanding of the project and the proposed approach to successfully providing the services in this contract, including the proposed equipment, staff, software/data platform, schedule, reporting mechanisms, quality control, safety, plan for flow monitor location access, etc.

Provide information relating to the financial resources of the Proposer in relation to their execution

RP034-24 Page 7 of the project scope. If the Proposer assumes that certain actions will be taken by GCDWR, state these explicitly. Deviations from the project specifications must be clearly noted and referenced to that specification.

Include the following information in the technical approach description:

• Typical response time and approach for addressing owner requests

• Typical response time for addressing data loss

• Approach for maintaining greater than 95% uptime and for ensuring data quality, including calibration checks and acceptable drift, to meet the specifications herein

• Format and information included in monthly reports

• Copies of typical charts, scatter graphs, hydrographs, tabulations and reports from projects of similar scope and complexity shall be included with the Proposer’s submittal

• Describe the Proposer’s approach to facilitating transfer of services to a new provider near the end of the contract

In addition, clearly state whether the proposal includes the optional item of the provision of a software tool that would quantify inflow and infiltration based on the flow monitoring data. If this optional item is included in the proposal, please describe this tool. Proposers will be short-listed based solely on the base items. This will be used for informational purposes only and not be scored. However, Gwinnett County reserves the right to award this line item if offered by the highest scoring firm.

Appendix F, Table E-1 includes a Data Delivery Service form which allows the Proposer to indicate what features the data hosting platform and optional I&I tool include, Proposer shall complete this form and include in this tab.

The technical approach should clearly show the value that the Proposer brings to GCDWR.

Please limit this information to 20 pages or less.

• Tab F – Forms Appendix F includes several forms required to be included in the proposal. This Tab F should include all additional forms outlined below that are not submitted within another Tab in the proposal:

1. Contractor Affidavit and Agreement

2. Code of Ethics Affidavit

3. Contract Experience & Reference Form (included in Tab C)

4. Data Delivery Service Form (included in Tab E)

Separate Sealed Envelope – Proposal Fee Schedule

Complete Attachment 1 – Proposal Fee Schedule and enclose it in a separate and distinct sealed envelope. One (1) unbound original and Five (5) exact copies should be submitted. A description of each item in the fee schedule is included in Attachment 1.

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V. Proposal Evaluation Criteria

The proposals will be reviewed by a selection team composed of GCDWR personnel. During the first phase of the evaluation, the Selection Team will have access to all proposal materials except the separately sealed envelope with the Proposal Fee Schedule. Following Phase I and II evaluation and scoring, the Selection Team may elect to invite Proposers to an interview. As a part of the interview, GCDWR may request a demonstration of the data hosting platform using historical data provided by GCDWR, a review of the optional I&I analysis tool (if provided), and any additional features that the Proposer feels are beneficial to GCDWR.

Table 1 is a list of the criteria that will be used in the evaluation of the proposals and their relative weights shown as point values. The selection team will use these criteria to evaluate Proposals.

Table 1 – Proposal Evaluation Scoring

Part I – Initially, proposals will be evaluated based on their relative responsiveness to criteria A-E above and with those point values weighted as shown above.

Part II – Firms will be short-listed for further consideration. The fee schedules of the short-listed firms from Part I will be opened, reviewed and scored. At the discretion of the County, or as deemed in its best interest, firms may be short-listed a second time for an interview/presentation.

Part III – If interviews are necessary for selection, evaluation will be performed and will be worth an additional 20 points in the selection process. The number of firms short listed and interviewed will be at the discretion of the selection committee. The vendor will be responsible for any cost associated with the request for an interview.

If, for any reason, the recommended firm(s) cannot execute the contract, the County may select the firm with the second highest score, and so on until a satisfactory agreement has been reached.

Criteria Tabs Points

Phase I

1. Proposer’s Identification and Qualification (A, B) A-B 10

2. Proposer’s Relevant Experience on Similar Types of Projects (C) C 10

3. Availability, Experience, Location and Qualification of Key Staff (D) D 25

4. Demonstration Of Project Understanding and Technical Approach (E) E 35

Sub-Total 80

Phase II

6. Proposal Fee Schedule (Separate Sealed Envelope) 20

7. Optional Interview/Presentation 20

Overall Total 120

RP034-24 Page 9

INSURANCE REQUIREMENTS

1. Statutory Workers' Compensation Insurance

(a) Employers Liability:

✓ Bodily Injury by Accident - $100,000 each accident

✓ Bodily Injury by Disease - $500,000 policy limit

✓ Bodily Injury by Disease - $100,000 each employee

2. Commercial General Liability Insurance

(a) $1,000,000 limit per occurrence and $2,000,000 aggregate for bodily injury and property damage

(b) The following additional coverage must apply:

✓ 1986 (or later) ISO Commercial General Liability Form

✓ Dedicated Limits per Project Site or Location (CG 25 03 or CG 25 04)

✓ Additional Insured Endorsement (Form B CG 20 10 with a modification for completed operations or a separate endorsement covering Completed Operations)

✓ Blanket Contractual Liability

✓ Broad Form Property Damage

✓ Severability of Interest

✓ Underground, explosion, and collapse coverage

✓ Personal Injury (deleting both contractual and employee exclusions)

✓ Incidental Medical Malpractice

✓ Hostile Fire Pollution Wording

3. Auto Liability Insurance

(a) $500,000 limit of liability per occurrence for bodily injury and property damage

(b) Comprehensive form covering all owned, non-owned, leased, hired, and borrowed vehicles

(c) Additional Insured Endorsement

(d) Contractual Liability

4. Umbrella Liability Insurance - $1,000,000 limit of liability

(a) The following additional coverage must apply

✓ Additional Insured Endorsement

✓ Concurrency of Effective Dates with Primary

✓ Blanket Contractual Liability

✓ Drop Down Feature

✓ Care, Custody, and Control - Follow Form Primary

✓ Aggregates: Apply Where Applicable in Primary

✓ Umbrella Policy must be as broad as the primary policy

5. Cyber Liability Insurance

(a) disclose cyber liability

6. Gwinnett County Board of Commissioners should be shown as an additional insured on General Liability, Auto Liability and Umbrella Liability policies.

7. The cancellation should provide 10 days notice for nonpayment and 30 days notice of cancellation.

8. Certificate Holder should read:

Gwinnett County Board of Commissioners 75 Langley Drive Lawrenceville, GA 30046-6935

9. Insurance Company, except Worker' Compensation carrier, must have an A.M. Best Rating of A-5 or higher.

Certain Workers' Comp funds may be acceptable by the approval of the Insurance Unit. European markets including those based in London and domestic surplus lines markets that operate on a non-admitted basis are exempt from this requirement provided that the contractor’s broker/agent can provide financial data to

RP034-24 Page 10 establish that a market is equal to or exceeds the financial strengths associated with the A.M. Best’s rating of A-5 or better.

9. Insurance Company should be licensed to do business by the Georgia Department of Insurance.

10. Certificates of Insurance, and any subsequent renewals, must reference specific bid/contract by project name and project/bid number.

11. The Contractor shall agree to provide complete certified copies of current insurance policy (ies) or a certified letter from the insurance company (ies) if requested by the County to verify the compliance with these insurance requirements.

12 All insurance coverages required to be provided by the Contractor will be primary over any insurance program carried by the County.

13. Contractor shall incorporate a copy of the insurance requirements as herein provided in each and every subcontract with each and every Subcontractor in any tier, and shall require each and every Subcontractor of any tier to comply with all such requirements. Contractor agrees that if for any reason Subcontractor fails to procure and maintain insurance as required, all such required Insurance shall be procured and maintained by Contractor at Contractor's expense.

14. No Contractor or Subcontractor shall commence any work of any kind under this Contract until all insurance requirements contained in this Contract have been complied with and until evidence of such compliance satisfactory to Gwinnett County as to form and content has been filed with Gwinnett County. The Acord Certificate of Insurance or a preapproved substitute is the required form in all cases where reference is made to a Certificate of Insurance or an approved substitute.

15. The Contractor shall agree to waive all rights of subrogation against the County, the Board of

Commissioners, its officers, officials, employees, and volunteers from losses arising from work performed by the contractor for the County.

16. Special Form Contractors’ Equipment and Contents Insurance covering owned, used, and leased equipment, tools, supplies, and contents required to perform the services called for in the Contract. The coverage must be on a replacement cost basis. The County will be included as a Loss Payee in this coverage for County owned equipment, tools, supplies, and contents.

17. The Contractor shall make available to the County, through its records or records of their insurer, information regarding a specific claim related to any County project. Any loss run information available from the contractor or their insurer relating to a County project will be made available to the County upon their request.

18. Compliance by the Contractor and all subcontractors with the foregoing requirements as to carrying insurance shall not relieve the Contractor and all Subcontractors of their liability provisions of the Contract.

19. The Contractor and all Subcontractors are to comply with the Occupational Safety and Health Act of 1970, Public Law 91-956, and any other laws that may apply to this Contract.

20. The Contractor shall at a minimum apply risk management practices accepted by the contractors’ industry.

RP034-24 Page 11 FAILURE TO RETURN THIS PAGE AS PART OF YOUR PROPOSAL MAY RESULT IN PROPOSAL BEING DEEMED NON- RESPONSIVE.

COMPANY NAME _________________________________________________________________________________________________________________________

Attachment 1 – Proposal Fee Schedule

Item

Description Est.

Quantity Unit

Price

Extended Price (Est. Qty x Unit Price)

Billable Months

Annual Total (Extended Price x Billable Months)

SECTION 1 (Monthly for the term of the Contract)

Monthly Monitoring and Maintenance of Parshall Flume Flow Monitoring Station 2 EA $ $ 60 $

2 Monthly Monitoring and Maintenance of In-Pipe Flow Monitoring Station 200 EA $ $ 60 $

3 Monthly Reporting of Existing “Billing Meter” Flow Monitoring Data 3 EA $ $ 60 $

4 Monthly Monitoring and Maintenance of Rain Gauge Stations 29 EA $ $ 60 $

5 Monthly Provision of Data Hosting and Delivery by Proposer 1 EA $ $ 60 $

Section 1 Total $

SECTION 2 (To Be Used on an As-Needed Basis)

6 Relocation of Existing Flow Monitoring Equipment 150 EA $ $ 1 $

7 Relocation of Existing Rain Gauge Stations 8 EA $ $ 1 $

8 Setup USGS Monitoring Stations in web hosting platform 30 EA $ $ 1 $

9 Hourly Labor Rates for Additional Services

Project Manager 25 HRS $ $ $

Field Crew Leader 50 HRS $ $ $

Data Analyst 50 HRS $ $ $

Field Service Technician 100 HRS $ $ $

Mark-up for Materials and Equipment Outside of Bid Items 1 through 9 (not to exceed 10%) Calculate Extended Price by adding $5,000.00 + mark -up % $5,000.00 ________% $ $

SECTION 2 TOTAL $

BASE FEE CONTRACT TOTAL (SECTION 1 & 2) $

RP034-24 Page 12 FAILURE TO RETURN THIS PAGE AS PART OF YOUR PROPOSAL MAY RESULT IN PROPOSAL BEING DEEMED NON- RESPONSIVE.

COMPANY NAME _________________________________________________________________________________________________________________________

SECTION 3 – Optional Items, excluded from Base Fee

Item Description Estimated Quantity

Unit Price Extended Price (Est. Qty x Unit

Price)

Billable Months

Annual Total (Extended Price x Billable Months)

Provision of Tool to Quantify Inflow and Infiltration for each meter shed

1 $ $ 60 $

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Fee Schedule Item Descriptions

1.0 General Requirements

1.1 The following subsections describe measurement and payment for Work to be done under the items listed in the Proposal Fee Schedule included in Attachment 1 – Proposal

Fee Schedule. Each unit or lump sum price stated in the Proposal Fee Schedule shall constitute full compensation for each item of Work. The Proposer shall provide all labor, materials, tools, equipment, and services required to complete the Work.

1.1.1 Payment for the various items in the Fee Schedule, as further specified herein, shall include all compensation to be received by the Proposer for furnishing all tools, equipment, supplies, and manufactured articles, and for all labor, operations, taxes, materials, commissions, transportation and handling, bonds, permit fees, insurance, overhead and profit, and incidentals appurtenant to the items of Work being described, as necessary to complete the various items of the Work all in accordance with the requirements of the Proposal Documents, including all appurtenances thereto, and including all costs of compliance with the regulations of public agencies having jurisdiction, including Safety and Health Requirements of the Occupational Safety and Health Administration of the U.S. Department of

Labor (OSHA). Such compensation shall also include payment for any loss or damages arising directly or indirectly from the Work.

1.2 Payment Items

1.2.1 The sum of all scheduled items in Sections 1 and 2 shall equal the total base value of the Contract.

1.2.2 Note that the cost for travel, mileage, and lodging will not be paid separately by

GCDWR. All such costs shall be included in the proposal items in the Proposal

Fee Schedule. No request for additional fees considering holiday, weekend, or after-hours work shall be entertained by GCDWR.

1.2.3 Items of the Proposal Fee Schedule:

A. Item 1 shall include all costs related to the provision, installation, monitoring, and maintenance of Parshall Flume installed flow monitoring stations owned by the Proposer. The unit cost bid shall include repair or replacement of any flume-installed flow monitoring station or part thereof that does not meet uptime and data quality specified in Section 1.6 of the Technical

Specifications included in Appendix A. For monitoring stations that operate less than the required data uptime percentage during a given month, a 10% reduction to the unit cost per monitoring station will result for every 5% of data uptime lost, not to exceed a maximum of 25% of data lost. Refer to

Table 1 for payment breakdown.

B. Item 2 shall include all costs related to the provision, installation, monitoring, and maintenance of in-pipe flow monitoring stations owned by the Proposer.

The unit cost bid shall include sewer cleaning only as needed for proper installation and continued operation of the flow monitoring

RP034-24 Page 14 equipment. The unit cost bid shall include repair or replacement of any in- pipe flow monitoring station or part thereof that does not meet uptime and data quality specified in Section 1.6 of the Technical Specifications included in

Appendix A. For monitoring stations that operate less than the required data uptime percentage during a given month, a 10% reduction to the unit cost per monitoring station will result for every 5% of data uptime lost, not to exceed a maximum of 25% of data lost. Refer to Table 1 for payment breakdown.

C. Item 3 shall include all costs required to provide GCDWR with billing reports detailing the flow at the existing billing meters during the previous month.

Only billings reports requested by the GCDWR Contract Manager will be paid for under this item.

D. Item 4 shall include all costs related to the provision, installation, monitoring, and maintenance of rain gauge stations owned by the Proposer. The unit cost bid shall include repair or replacement of any rain gauge station or part thereof that does not meet uptime and data quality specified in Section 1.6 of the Technical Specifications included in Appendix A. For monitoring stations that operate less than the required data uptime percentage during a given month, a 10% reduction to the unit cost per monitoring station will result for every 5% of data uptime lost, not to exceed a maximum of 25% of data lost. Refer to Table 1 for payment breakdown.

E. Item 5 shall include all costs required to host and display all data as specified in Section 1.4 of the Technical Specifications included in

Appendix A.

F. Item 6 shall include all costs related to the relocation (including removal, cleaning, and reinstallation at the new location) of in-pipe flow monitoring stations, and confirmation of monitor communication and data transmission to the data hosting website. Following proper installation under Item 6, monitoring and maintenance will be paid under Item 2 or 3 as appropriate.

G. Item 7 shall include all costs related to the relocation (including removal, cleaning, and reinstallation at the new location) of rain gauge stations, and confirmation of monitor communication and data transmission to the data hosting website. Following proper installation under Item 7, monitoring and maintenance will be paid under Item 4 as appropriate.

H. Item 8 shall include all costs associated with work needed to set up and connect the USGS Monitoring Stations in the web hosting platform. This will be a one-time charge for the setup; hosting the data is incidental to the contract.

I. Item 9 shall include the Hourly Labor Rates for Additional Services beyond services covered in any other unit bid item. The labor rates bid shall include all costs for direct hourly labor, overhead, and profit. Payment for work under this item will only be made when services are requested in writing by the GCDWR Contract Manager.

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J. Item 10 shall include the Proposer’s mark-up on materials and equipment which are outside of the materials or equipment defined in any other unit bid item. Mark-up shall not exceed 10%. Receipts for any materials and equipment must be provided with the request for payment. Payment for work under this item will only be made when materials or equipment are requested in writing by the GCDWR Contract Manager.

K. Item 11 shall include all costs related to providing a web-based analytical software tool to quantify Inflow and Infiltration on a meter shed basis with data collected during this contract, historical data uploaded onto the data hosting platform provided by GCDWR, and limited flow data from the GCDWR

Pump Station SCADA historian. This will be used for informational purposes only and not be scored. However, Gwinnett County reserves the right to award this line item if offered by the highest scoring firm.

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Sanitary Sewer Flow Monitoring and Maintenance Services

RP034-24

Appendices

Appendix A – Technical Specifications

Appendix B – System Schematic of Sanitary Sewer Flow Monitors

Appendix C – Flow Monitor Site Listing

Appendix D – Rain Gauge Site Listing

Appendix E – Sanitary Sewer Flow Monitoring Locations 2024

Appendix F – Forms

Appendix G – Sample Contract

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Appendix A – Technical Specifications

1.0 SCOPE OF SERVICES

1.1 General Requirements

The Contractor shall conform to requirements for installation, operations, maintenance, and data delivery services as specified. A table of current flow monitoring sites, rain gauge stations, and site descriptions are provided in Appendices B through D.

1.1.1 All new or upgraded flow monitors and rain gauges shall be installed according to the manufacturer’s specifications.

1.1.2 The flow monitors and all necessary appurtenances for this project must be manufactured for sanitary sewer flow applications. The equipment used shall be manufactured by ADS, ISCO or approved equal. The flow monitors shall employ ultrasonic depth sensors as a primary measurement device for accuracy, and a pressure sensor as a backup depth measurement to measure surcharge depth should it occur, and a velocity sensor. In addition, the flow monitors shall provide a sensor to measure temperature of the flow in the pipe. All appurtenances and ancillary equipment or supplies used in the flow monitors, including batteries and antennas shall be standard equipment for the proposed devices. Any non-standard or substitutes must be specifically identified by the Proposer and approved prior to use by both the manufacturer and the Owner.

1.1.3 Work at certain sites may require traffic control plans to protect the public and the Contractor’s work force. The Contractor shall be responsible for contacting any and all agencies for stipulations regarding traffic control measures and shall be responsible for the development and submission to the proper authorities

(including GCDWR) of any required traffic control plans. The Contractor shall be responsible for furnishing all required barricades, advance warning signs, detour signs, lights, etc. that may be required as a condition of Federal, State, or local requirements. Certain sites will require work performed in easements, GCDWR will only clear easements that are currently on the rotation unless the easement is impassable by overgrowth that can’t be cleared by hand tools. Fallen trees will be removed at the discretion of the GCDWR project manager, i.e. the tree is covering the manhole or multiple trees impeding access to the entire easement.

Easements do not always have access with a conventional vehicle if manhole entry equipment is needed the contractor shall be responsible for accessing and getting that equipment to the site by means of alternative vehicles or carrying by hand. If access is needed to private property not contained in a GCDWR easement the contractor shall be responsible for contacting the owner of the property for access initially. If the owner refuses access to property, then the contractor shall use necessary means to access from easements.

1.1.4 The Contractor shall provide written notification to the GCDWR Contract

Manager one week in advance of whenever work involves bypassing, blocking, or diverting flows. The work shall follow the requirements set forth in this

Specification and shall not begin before notification of and approval by the

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GCDWR Contract Manager.

1.1.5 The Contractor shall meet the minimum experience requirements defined in

Section 2.0.

1.2 Flow Monitoring Installations

The Contractor may request a change in location if an alternate site is more hydraulically suitable for flow monitoring a certain sub-basin; however, “billing meter” locations shall not be changed. The Contractor shall submit any request to change location in writing to the GCDWR Contract Manager for review. Approval of such requests shall be at the sole discretion of GCDWR.

1.2.1 Site Inspection – Prior to installations, each site shall be inspected to determine hydraulic suitability. Pipe size should be field verified and recorded. This shall require descending into the manhole to ensure adequate inspection and determination of channel geometry for use in flow calculations. The Contractor shall not rely on as-built drawings for the determination of pipe geometry or slopes. Any discrepancies in diameter between GCDWR GIS and field measurements shall be discussed with GCDWR Project Manager.

1.2.2 Submittals –For each site, a site installation report will be submitted to the

GCDWR Contract Manager for review and approval of the proposed installation site as described in section 1.2.1. The GCDWR Contract Manager shall have seven (7) calendar days in which to review and respond to the Contractor.

Existing sites do not need to be pre-approved by the GCDWR Contract Manager.

1.2.3 Utilities –If AC power is required for operation of a proposed new site, the

Contractor shall be responsible for arranging installation of power. Immediately upon system acceptance as specified in Section 1.2.12, all power accounts shall be transferred over to Gwinnett County Department of Water Resources, who shall be responsible for payment. GCDWR shall be responsible for obtaining all easements necessary for connection of new power utilities. GCDWR shall be responsible for any costs associated with the installation of AC power if it is required.

1.2.4 Calibration – Proof of initial calibration of each monitor after each installation shall be submitted to the GCDWR Contract Manager within 7 days of installation.

The Contractor shall perform a minimum of two (2) manual depth and velocity measurements at every site after installation to confirm that the sensors are measuring accurate depths and velocities. The two manual confirmations shall occur on different days within 7 days of the installation. Accuracy shall be within the range specified in Section 3. Monitors that do not conform to these specifications shall be repaired or replaced as necessary to meet the specifications at the expense of the Contractor. The GCDWR Contract Manager shall reserve the right to recommend to Contractor that any individual monitor be removed and re-calibrated if the flow monitor is recording inaccurate or invalid data per Section 1.6. The Contractor shall perform calibration at least once a month for billing meters and at least once every six months for the remaining

RP034-24 Page 19 monitoring sites during the life of the contract.

1.2.5 Activation – The Contractor shall activate all the flow monitors and telemetry systems at each location and shall transfer all site-specific data and communication files for each site to the GCDWR Contract Manager upon activation.

1.2.6 Manual confirmations of depth and velocity shall be performed when sensors or monitors are replaced, or an unexplainable hydraulic shift is observed in the data. All confirmations points will be plotted on the hydrographs and scatter graphs submitted for each site. If the confirmation data does not fall within the accuracy specified in Section 3, then the monitor shall be re-calibrated.

1.2.7 The flow monitors and rain gauges shall be programmed to acquire and store data at a minimum of 15-minute intervals for flow monitors and 5-minute intervals for rain gauges. Faster rates of 2-minute intervals may be requested for some sites and special investigations.

1.2.8 Safety – The Contractor shall be solely responsible for taking all necessary safety precautions in the performance of its services, even if GCDWR is on-site.

Due to the requirement to enter active sewer lines to fulfill this contract, the

Contractor is advised that the sewer and manhole environment may be oxygen deficient and may contain toxic and/or explosive gas vapors and liquids, as well as the health hazards associated with contact with raw wastewater. The

Contractor is further advised that night activities may be necessary where minimum flow levels are involved. The Contractor shall follow all applicable

Federal, State, local and OSHA Regulations for manhole work and confined space entry.

1.2.9 Maintenance of Continuous Operation - Installation of the system shall be conducted in such a manner that there shall be minimum interference with the continuous operation of the existing sewer system. Contractor shall be responsible for any damages to public or private property or fines incurred as a result of negligence or other Contractor error. Data review by a trained data analyst is required to ensure that flow monitoring equipment is not interfering with the continuous operation of the sewer system.

1.2.10 Bypass Pumping and/or Line Plugging - Where required for the installation of system components, the Contractor shall be wholly responsible for bypass pumping of wastewater and/or temporary plugging of sewer lines. Contractor shall be responsible for supplying all pumps, conduits, and other equipment and manpower needed to divert the flow from one point in the sewer system to another point in the sewer system. The bypass system shall be of sufficient capacity to handle maximum anticipated flow at the particular site. No disruption of service will be allowed without prior approval of the GCDWR

Contract Manager. Prior to installation requiring bypass pumping, Contractor shall submit to the GCDWR Contract Manager for approval the bypass pumping plan including pump size and configuration, contingency plans for pump failure or unexpected rainfall, duration of bypass pumping event, and other relevant

RP034-24 Page 20 information. At the GCDWR Contract Manager’s direction, bypass pumping may be delayed until a later- specified time if significant rainfall events have recently occurred or are predicted to occur in the immediate future. Contractor’s bypass pumping plan shall anticipate rainfall events and shall include a contingency/backup plan to address them. If bypass pumping is required on a

24-hour basis, pumping units shall be provided with complete backup units and shall be equipped with noise attenuators that limit the noise level to a maximum of 70 dBA at 30 feet. Bypass pumping equipment shall be manned 24-hours per day during operation. Precautions must be taken to ensure that sewer flow control operations do not cause flooding or damage to public or private property.

Contractor shall be responsible for any damages to public or private property or fines incurred as a result of negligence or other Contractor error.

1.2.11 As part of the installation process the Contractor is required to maintain a complete record of each installation on a Site Report that will list all pertinent installation information including pipe diameter, manhole depth, location, pipe configuration drawings or schematics, the serial number of the device(s), the associated IP address or phone number, the date of installation, the location of the installation (including the Facility ID of the manhole and the pipe in the case of flow monitors and the address or other identifying feature for the rain gauges), the date(s) for any service or calibration of the equipment, and pictures of the sensors and monitor installation. The Site Report shall be submitted for approval to the GCDWR Contract Manager with the signature of the GCDWR Contract

Manager indicating acceptance. The Site Report shall include as a minimum:

1) A sketch or photo of the manhole with all pipes entering and leaving the manhole annotated with the Facility ID, size, and the direction of flow for all pipes entering/leaving the manhole.

2) All field-verified dimensions of the manhole and all pipes

3) A description of the hydraulic flow conditions

4) The type of meter to be installed and the expected precision of measurement over the range of expected flows

5) Photo of installed sensors and meter (logger) and above ground perspective photos

1.2.12 Site Restoration – At completion of any installation, the Contractor shall remove all rubbish, construction debris, and excess materials resulting from the work from each individual site and shall leave the above ground and street-side working areas in a neat condition satisfactory to the GCDWR Contract Manager.

The Contractor shall dispose of said material in an approved and legal manner.

Installation sites shall be restored to original condition as quickly as possible after installation is completed and before final site acceptance. Contractor is responsible for replacing in kind and matching original condition of any landscaping that has been destroyed or removed due to the installation of the meter or utilities. Contractor shall provide temporary grassing if required.

Established turf areas shall be replaced in kind with sod.

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1.2.13 System Acceptance - Acceptance by the GCDWR Contract Manager is required for each site before payment is requested. For acceptance to be awarded, each location must be operational, be manually calibrated, be transmitting data to the data hosting web platform in accordance with Section 1.4 and be restored to original topside conditions. All sites shall be inspected by the GCDWR

Contract…