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Septic System Installation – Gravity Trench Chamber Drainfield

Active

Federal

Response Deadline08/21/2026, 07:00:00 PM UTC

Contract Overview

Solicitation details, issuing organization, response deadlines, documents, and interested companies for this government contract opportunity.

AI Contract Overview

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A new on-site septic system is to be installed using a 1,050-gallon two-compartment concrete septic tank equipped with an effluent filter, a distribution box, speed levelers, and 4-inch sewer pipe, all designed to operate with a gravity trench chamber drainfield that meets Washington State regulatory standards. The system is intended for deployment in Castle Rock and must comply with all local and state requirements for waste water treatment and environmental protection. This subcontract is designated as a Small Business Set Aside under the NAICS code 238990, limiting eligibility to qualified small businesses. The opportunity was posted on August 7, 2026, with responses due by August 21, 2026, and is managed under the Department of Health and Human Services through its Division of Engineering Services in Seattle.

General Info

Install 1,050-gallon septic system in Castle Rock per Washington State standards, small business set aside.

Agency

Department Of Health And Human Services → Division Of Engineering Svcs - SeattleView Agency

NAICS

238990 - All Other Specialty Trade ContractorsView NAICS

Place of Performance

Castle Rock, WA, USA

Set-Aside

SBA

Documents

(0)

No documents available

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Timeline

PostedAug 7

subcontract

Response DeadlineAug 21

Submission deadline

Response Deadline

08/21/2026, 07:00:00 PM UTCin 13 days

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Organization & Contact Information

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AgencyDepartment Of Health And Human Services → Division Of Engineering Svcs - Seattle

ContactsNo contacts available

OfficeN/A

Organization / Agency

Department Of Health And Human Services → Division Of Engineering Svcs - Seattle

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Office AddressN/A

ContactsNo contact information available

Full Description

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Install a new on-site septic system with a 1,050-gallon two-compartment concrete septic tank, effluent filter, distribution box, speed levelers, and 4-inch sewer pipe using a gravity trench chamber drainfield compliant with Washington State standards.

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