DECOMMISSIONING of MONITORING WELLS and GAS PROBES at ENGLISH PIT LANDFILL

Location:	Washington
Posted:	Mar 27, 2026
Due:	Apr 8, 2026
Agency:	County of Clark
Type of Government:	State & Local
Category:	66 - Instruments and Laboratory Equipment R - Professional, Administrative and Management Support Services
Solicitation No:	RFP Number: 950
Publication URL:	To access bid details, please log in.

RFP Number: 950

It is the responsibility of the proposer to monitor this site prior to proposal submission, in case additional information, which may be pertinent to the proposal is provided.

General Information:

The Public Works Department is seeking proposals from the consultant community to provide professional environmental engineering and project management services to support the decommissioning of groundwater monitoring and landfill gas probes at the English Pit Landfill.

Addendum 1 - Issued Friday, March 27, 2026

Release Date: Wednesday, March 4, 2026
Closing Date: Wednesday, April 8, 2026

Pre-Bid Conference:

A non-mandatory pre-submittal meeting will be held on Wednesday, March 11, 2026 at 1:00pm via Microsoft Teams. Proposers shall email the Project Manager, Mike Davis no later than March 6, 2026, at Solidwaste@clark.wa.gov to request a meeting invite.

A non-mandatory site visit is scheduled for Wednesday, March 18, 2026 from 10:00 – 11:00am. Proposers shall email Mike Davis at Solidwaste@clark.wa.gov no later than March 11, 2026 if they plan to attend.

Attachments:

Attachment Preview

REQUEST for PROPOSAL # 950

ARCHITECTURAL and ENGINEERING SERVICES

Clark County Washington

RELEASE DATE: WEDNESDAY, MARCH 4, 2026

DUE DATE: WEDNESDAY, APRIL 1, 2026 by 11:00 am

Request for Proposal for:

DECOMMISSIONING of MONITORING WELLS and GAS PROBES

ENGLISH PIT LANDFILL

SUBMIT:

One (1) USB flash drive with all required proposal documents

No paper copies are required to be included.

of the Proposal to:

UPS / FedEx or Hand Delivery

Clark County

ATTN: Office of Purchasing

1300 Franklin Street, 6th Floor, Suite 650

Vancouver WA 98660

564-397-2323

United States Postal Service (ONLY)

Clark County

ATTN: Office of Purchasing

PO Box 5000

Vancouver WA 98666-5000

564-397-2323

Office Hours: 8:00 am – 3:00 pm, Monday – Friday, except Legal Holidays.

No electronic submissions.

**Proposals must be delivered to the Purchasing office – No Exceptions

**Proposals must be date and time stamped by Purchasing staff by 11:00 am on due date – No Exceptions

**Proposal shall be sealed and clearly marked on the package cover with RFP #, Title & Company Name

Refer Questions to Project Manager:

Clark County, WA local government agency is not affiliated with any group, business or other type of enterprise

that is not listed on our webpage at www.clark.wa.gov and emails must end in @clark.wa.gov.

Mike Davis

Environmental Operations Specialist Sr.

Public Works | Solid Waste and Recycling Division

solidwaste@clark.wa.gov

564.397.7343

General Terms and Conditions

ADMINISTRATIVE REQUIREMENTS - Contractors shall comply with all management and

administrative requirements established by Washington Administrative Code (WAC), the

Revised Code of the State of Washington (RCW), and any subsequent amendments or

modifications, as applicable to providers licensed in the State of Washington.

ALL proposals submitted become the property of Clark County. It is understood and agreed

that the prospective Proposer claims no proprietary rights to the ideas and written materials

contained in or attached to the proposal submitted. Clark County has the right to reject or

accept proprietary information.

AUTHORSHIP - Applicants must identify any assistance provided by agencies or indivi-

duals outside the proposers own organization in preparing the proposal. No contingent

fees for such assistance will be allowed to be paid under any contract resulting from this

RFP.

CANCELLATION OF AWARD - Clark County reserves the right to immediately cancel an

award if the contractual agreement has not been entered into by both parties or if new state

regulations or policy make it necessary to change the program purpose or content,

discontinue such programs, or impose funding reductions. In those cases where

negotiation of contract activities are necessary, Clark County reserves the right to limit the

period of negotiation to sixty (60) days after which time funds may be unencumbered.

CONFIDENTIALLY - Proposer shall comply with all applicable state and federal laws

governing the confidentiality of information.

CONFLICT OF INTEREST - All proposals submitted must contain a statement disclosing

or denying any interest, financial or otherwise, that any employee or official of Clark County

or the appropriate Advisory Board may have in the proposing agency or proposed project.

CONSORTIUM OF AGENCIES - Any consortium of companies or agencies submitting a

proposal must certify that each company or agency of the consortium can meet the

requirements set forth in the RFP.

COST OF PROPOSAL & AWARD - The contract award will not be final until Clark County

and the prospective contractor have executed a contractual agreement. The contractual

agreement consists of the following parts: (a) the basic provisions and general terms and

conditions, (b) the special terms and conditions, (c) the project description and goals

(Statement of Work), and (d) the budget and payment terms. Clark County is not

responsible for any costs incurred prior to the effective date of the contract. Clark County

reserves the right to make an award without further negotiation of the proposal submitted.

Therefore, the proposal should be submitted in final form from a budgetary, technical, and

programmatic standpoint.

DISPUTES - Clark County encourages the use of informal resolution to address complaints

or disputes arising over any actions in implementing the provisions of this RFP. Written

complaints should be addressed to Clark County – Purchasing, P.O. Box 5000, Vancouver,

Washington 98666-5000.

DIVERSITY IN EMPLOYMENT AND CONTRACTING REQUIREMENTS - It is the

policy of Clark County to require equal opportunity in employment and services subject

to eligibility standards that may be required for a specific program. Clark County is an

equal opportunity employer and is committed to providing equal opportunity in

employment and in access to the provision of all county services. Clark County's Equal

Employment

Opportunity

Plan

available

http://www.clark.wa.gov/hr/documents.html. This commitment applies regardless of

race, color, religion, creed, sex, marital status, national origin, disability, age, veteran

status, on-the-job injury, or sexual orientation. Employment decisions are made without

consideration of these or any other factors that are prohibited by law. In compliance with

department of Labor Regulations implementing Section 504 of the rehabilitation Act of

1973, as amended, no qualified handicapped individual shall be discriminated against

in admission or access to any program or activity. The prospective contractor must agree

to provide equal opportunity in the administration of the contract, and its subcontracts or

other agreements.

MUNICIPAL RESEARCH and SERVICE CENTER - Clark County (WA) contracts with

the Municipal Research and Service Center (MRSC) to maintain our Consultant, Small

Works and Vendor rosters. To be eligible to participate in this Clark County public

solicitation and the resulting contract, your business must be registered with the MRSC

Rosters. Failure to register may result in your proposal being marked nonresponsive.

Be sure to select Clark County in your application. If you have questions about the

registration process, contact the MRSC Rosters at 206-436-3798 or

https://mrscrosters.org/businesses/business-membership/

independently, without consultation, communication, or agreement for the purpose of

restricting competition. This does not preclude or impede the formation of a consortium

of companies and/or agencies for purposes of engaging in jointly sponsored proposals.

INTERLOCAL AGREEMENT - Clark County has made this RFP subject to Washington

State statute RCW 39.34. Therefore, the proposer may, at the proposers option, extend

identical prices and services to other public agencies wishing to participate in this RFP.

Each public agency wishing to utilize this RFP will issue a purchase order (or contract)

binding only their agency. Each contract is between the proposer and the individual agency

with no liability to Clark County.

LIMITATION - This RFP does not commit Clark County to award a contract, to pay any

costs incurred in the preparation of a response to this RFP, or to procure or contract for

services or supplies.

LATE PROPOSALS - A proposal received after the date and time indicated above will not

be accepted. No exceptions will be made.

ORAL PRESENTATIONS - An oral presentation may be required of those prospective

contractors whose proposals are under consideration. Prospective contractors may be

informed that an oral presentation is desired and will be notified of the date, time and

location the oral presentation is to be conducted.

OTHER AUDIT/MONITORING REQUIREMENTS - In addition, auditing or monitoring for

the following purposes will be conducted at the discretion of Clark County: Fund

accountability; Contract compliance; and Program performance.

PRICE WARRANT - The proposer shall warrant that the costs quoted for services in

response to the RFP are not in excess of those which would be charged any other individual

or entity for the same services performed by the prospective contractor, in a similar

socioeconomic, geographical region.

REQUEST for PROPOSALS – This solicitation is an invitation by Clark County for

Proposers to submit an offer, which may be subject to subsequent discussions and

negotiations by the County and the Proposer. It is not a request for a competitive bid.

A Proposal means any document, submittal, interview presentation, negotiation, and

everything and anything provided in response to this RFP regardless of whether the

submission is an oral or written submission.

Clark County reserves the right to accept or reject any or all proposals received as a result

of this RFP, to negotiate with any or all prospective contractors on modifications to

proposals, to waive formalities, to postpone award, or to cancel in part or in its entirety this

RFP if it is in the best interest of Clark County to do so.

PROTESTS - Must be submitted to the Purchasing Department within 3 business days of

receipt of Letter of Notice.

PUBLIC SAFETY - May require limiting access to public work sites, public facilities, and

public offices, sometimes without advance notice. The successful Proposer’s employees

and agents shall carry sufficient identification to show by whom they are employed and

display it upon request to security personnel. County project managers have discretion

to require the successful Proposer’s employees and agents to be escorted to and from

any public office, facility or work site if national or local security appears to require it.

SALES TAX - Out of State Businesses – WA State Reporting Thresholds & Nexus

https://dor.wa.gov/education/industry-guides/out-state-businesses-reporting-thresholds-

and-nexus Businesses operating outside WA State must register to report B&O tax and

collect/submit applicable sales tax, if the business meets any of the following thresholds in

the current or prior year:

• Has physical presence nexus in Washington.

• Has more than $100,000 in combined gross receipts sourced or attributed to

Washington.

• Is organized or commercially domiciled in Washington.

SUBCONTRACTING - No activities or services included as a part of this proposal may

be subcontracted to another organization, firm, or individual without the approval of

Clark County. Such intent to subcontract shall be clearly identified in the proposal. It is

understood that the contractor is held responsible for the satisfactory accomplishment

of the service or activities included in a subcontract.

VERBAL PROPOSALS - Verbal proposals will not be considered in making the award of

any contract as a result of this RFP.

WORKERS COMPENSATION INSURANCE – The contractor shall comply with R.C.W.

Title 51- with minimum coverage limits of $500,000 for each accident, or provide

evidence that State law does not require such coverage.

INDEPENDENT PRICE DETERMINATION - The prospective contractor guarantees that,

in connection with this proposal, the prices and/or cost data have been arrived at

FOR ALTERNATIVE FORMATS

Clark County ADA Office: V: 564-397-2322

ADA@clark.wa.gov

PART I

PART II

Request for Proposals

Table of Contents

PROPOSAL REQUIREMENTS

Section IA: General Information

1. Introduction

2. Background

3. Scope of Project

4. Project Funding

5. Title VI Statement

6. Timeline for Selection

7. Employment Verification

Section IB: Work Requirements

1. Required Services

2. County Performed Work

3. Deliverables and Schedule

4. Place of Performance

5. Period of Performance

6. Debarred / Suspended

7. Americans with Disabilities Act (ADA) Information

8. Public Disclosure

9. Insurance/Bond

10. Plan Holders List

PROPOSAL PREPARATION AND SUBMITTAL

Section IIA: Pre-Submittal Meeting/Clarification

1. Pre-Submittal Meeting

2. Proposal Clarification

PART III

Section IIB: Proposal Submission

1. Proposals Due

2. Proposal

Section IIC: Proposal Content

1. Cover Sheet

2. Project Team

3. Management Approach

4. Respondent’s Capabilities

5. Project Approach and Understanding

6. Proposed Cost

PROPOSAL EVALUATION & CONTRACT AWARD

Section IIIA: Proposal Review and Selection

1. Evaluation and Selection

2. Evaluation Criteria Scoring

Section IIIB: Contract Award

1. Consultant Selection

2. Contract Development

3. Award Review

4. Orientation/Kick-off Meeting

ATTACHMENTS

A: Proposal Cover Sheet

B: Letter of Interest

C: Certification Regarding Debarment, Suspension and Other Responsibility Matters Form

EXHIBITS

A. SCS Maintenance and Monitoring Plan

B. FETROW report

C. Professional Services Sample Contract

Request for Proposal # 950

Decommissioning of Monitoring Wells and Gas Probes at English Pit Landfill

Part I

Proposal Requirements

Section IA

1. Introduction

General Information

The purpose of this Request for Proposals (RFP) is to permit qualified architects and/or

environmental engineering firms to submit proposals based upon their qualifications to provide

professional services for the development of bid specifications and project management support

associated with the decommissioning of four (4) groundwater monitoring wells and four (4) landfill

gas probes at the closed English Pit Landfill. The selected firm will assist Clark County in preparing

procurement documents and coordinating regulatory, permitting, and implementation activities

necessary to complete this work in compliance with applicable state and local requirements.

This is a qualifications-based selection process, do not submit costs with proposal.

Clark County, (WA) contracts with the Municipal Research and Service Center (MRSC) to maintain

our Consultant Rosters. To be eligible to participate in this public solicitation and the resulting

contract your business must be registered with the MRSC Rosters.

Failure to register may result in your proposal being marked non-responsive. Be sure to select Clark

County in your application. If you have questions about the registration process, contact the MRSC

Rosters at 206-436-3798 or https://mrscrosters.org/businesses/business-membership/

If your company contact details are not on the Plan Holder List at https://clark.wa.gov/internal-

services/request-proposal-1

Attachment B, Letter of Interest must be submitted to participate in this RFP.

Proposers shall respond to all sections to be considered.

2. Background

The English Pit Landfill is a closed landfill facility owned by Clark County and located at approximately

912 NE 192nd Avenue, Vancouver, Washington 98684.

Site History

Clark County purchased the property in 1941. Prior to landfilling activities, the site was used as a gravel

source utilizing open surface mining techniques. Waste disposal operations began in 1954 and were

conducted under contract by various vendors until 1970. Clark County assumed operation of the landfill

in 1971. The landfill ceased operations and was closed in January 1979 with a non-engineered soil

cap. In 1986, the original closure cap was replaced with an engineered low-permeability final closure

cap.

The landfill encompasses approximately 5.5 acres and is rectangular in shape. The engineered cap

forms a flat-topped, gently graded dome rising approximately 40 feet above the original ground surface,

which averages approximately 290 feet above mean sea level (AMSL). Landfill cells extend

approximately 30 to 40 feet below the original ground surface (approximately 250–260 feet AMSL).

Waste was placed in unlined cells below ground elevation between 1954 and 1971, with additional

waste placement above ground continuing through 1979 to an elevation of approximately 330 feet

AMSL.

Regulatory History and Monitoring

In 1980, the site was listed on the U.S. Environmental Protection Agency (EPA) Comprehensive

Environmental Response, Compensation, and Liability Information System (CERCLIS) due to its

inclusion in the Eckhardt Report. Early inspections conducted by the Washington State Department of

Ecology (Ecology), the EPA, and the Southwest Washington Health District concluded that no evidence

of systematic hazardous waste disposal existed at the site. However, in 1985, Ecology recommended

periodic monitoring of groundwater and surface water for potential leachate seepage.

Request for Proposal # 950

Decommissioning of Monitoring Wells and Gas Probes at English Pit Landfill

In 1988, EPA Region 10 notified Ecology of information alleging that cyanide waste may have been

disposed of at the site between 1964 and 1975. Subsequent investigations alleged that between 400

and 900 drums of hardened cyanide-laden solid waste may have been disposed of during that period.

A Phase II Site Inspection was conducted in August 1988, including sampling of seven nearby wells.

No cyanide or other constituents exceeding drinking water standards were detected. Ecology’s Phase

I and II Site Inspection Report, issued in December 1988, recommended additional site sampling.

Four (4) groundwater monitoring wells were installed in November 1990—one (1) in an upgradient

location and three (3) in downgradient locations. The wells terminate at the interface of the upper

alluvial aquifer and the Troutdale Formation at an approximate elevation of 210 feet MSL. Groundwater

sampling conducted in December 1990 did not identify contaminants exceeding primary drinking water

standards. Manganese was detected above secondary (non-health-based) drinking water standards.

No volatile organic compounds or cyanide were detected.

In 2001, Clark County Solid Waste, Clark County Public Health, and Ecology received renewed citizen

concerns regarding historic cyanide disposal. Clark County subsequently retained SCS Engineers to

resume groundwater monitoring and install landfill gas probes. A Maintenance and Monitoring Plan

was developed and approved in July 2002, after which four (4) gas probes were installed and

monitoring activities resumed (Exhibit A).

Groundwater and landfill gas monitoring continued through 2008, with no contamination or landfill gas

detected. Clark County Public Health and Ecology recommended that monitoring be discontinued.

Current Conditions

Hewlett-Packard (HP) is currently developing the parcel immediately west of the landfill (Tax Lot No.

176374000). A survey conducted in 2023 determined that three (3) of the monitoring wells are located

on HP property. An easement granted to Clark County in 1990 requires the County to decommission

the wells if monitoring is discontinued for two (2) years or more. HP has formally requested that the

County proceed with decommissioning the wells.

Access to the wells located on the HP property is constrained by trees and vegetation. Tree removal

may be required to allow access for well drilling equipment. The City of Vancouver requires permits for

tree removal within city limits.

In 2025, Ecology reviewed the historical monitoring data collected between 2002 and 2008 and

confirmed that continued monitoring is not required and that the wells may be decommissioned in

accordance with standard well decommissioning regulations.

Additional historical documentation is available in the following reports:

• Phase I and II Site Inspection Report, Clark County English Pit, Ecology, December 1988

• Ground Water Evaluation Plan for English Pit Landfill, Russ Fetrow Engineering, Inc., May

1990

• Final Project Report: Installation of Ground Water Monitoring Wells and Results of First Round

Ground Water Quality Sampling at the English Pit Landfill, Russ Fetrow Engineering, Inc.,

February 1991

• English Pit Maintenance and Monitoring Plan, SCS Engineers, July 2002 (Exhibit A)

This is the opportunity summary page. It provides an overview of this opportunity and a preview of the attached documentation.

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DECOMMISSIONING of MONITORING WELLS and GAS PROBES at ENGLISH PIT LANDFILL

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See also