Development

Yakima County Updates Ecosystem Project, Culvert Replacements

Saturday, August 1, 2026

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Yakima County issued two new SEPA filings on July 30, 2026, for infrastructure projects affecting local residents. The Yakima River Gap to Gap Ecosystem Restoration Project includes a minor design update to a culvert enlargement at Sportsman State Park. Yakima County's Department of Natural Resources issued the addendum to document final design changes from the 2022 Mitigated Determination of Non-significance. The project aims to improve river ecosystem health. A separate filing for Guimaraes Culvert Replacement seeks to replace a culvert within a Type 3 stream. The applicant, Robert Guimaraes, must submit comments by August 13, 2026. The county is reviewing the proposal for environmental impact.

📄 Source: WA Ecology SEPA — Yakima County — https://data.wa.gov/resource/mmcb-z6jf.json?countyname=YAKIMA

Source receipts8 of 12 claims supported · 67%

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Yakima County issued two new SEPA filings on July 30, 2026No usable supporting receipt — unverified.
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The filings are for infrastructure projects affecting local residentsNo usable supporting receipt — unverified.
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The Yakima River Gap to Gap Ecosystem Restoration Project includes a minor design update to a culvert enlargement“The initial 2022 Mitigated Determination of Non-significance (MONS) (SEP2022-00007) for the Sportsman State Park culvert enlargement, issued as part of the Yakima River Gap to Gap Ecosystem Restoration Project, was based on the 65% design plans. This addendum is necessary to document minor modifications incorporated into the final 100% design.”
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The minor design update is at Sportsman State Park“The initial 2022 Mitigated Determination of Non-significance (MONS) (SEP2022-00007) for the Sportsman State Park culvert enlargement, issued as part of the Yakima River Gap to Gap Ecosystem Restoration Project, was based on the 65% design plans. This addendum is necessary to document minor modifications incorporated into the final 100% design.”
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Yakima County's Department of Natural Resources issued the addendumNo usable supporting receipt — unverified.
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The addendum documents final design changes from the 2022 Mitigated Determination of Non-significance“The initial 2022 Mitigated Determination of Non-significance (MONS) (SEP2022-00007) for the Sportsman State Park culvert enlargement, issued as part of the Yakima River Gap to Gap Ecosystem Restoration Project, was based on the 65% design plans. This addendum is necessary to document minor modifications incorporated into the final 100% design.”
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The project aims to improve river ecosystem healthNo usable supporting receipt — unverified.
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A separate filing is for Guimaraes Culvert Replacement“--- SEPA #202603209 --- Project: Guimaraes Culvert Replacement Lead agency: Yakima County Type: ODNS/NOA Applicant: Robert Guimaraes Description: The proposal is to replace an existing culvert with a 100' long culvert within a Type 3 stream.”
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The Guimaraes Culvert Replacement seeks to replace a culvert within a Type 3 stream“The proposal is to replace an existing culvert with a 100' long culvert within a Type 3 stream.”
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The applicant for the Guimaraes Culvert Replacement is Robert Guimaraes“Applicant: Robert Guimaraes”
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Robert Guimaraes must submit comments by August 13, 2026“Comments due: 2026-08-13”
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The county is reviewing the Guimaraes Culvert Replacement proposal for environmental impact“--- SEPA #202603209 --- Project: Guimaraes Culvert Replacement Lead agency: Yakima County Type: ODNS/NOA Applicant: Robert Guimaraes Description: The proposal is to replace an existing culvert with a 100' long culvert within a Type 3 stream. Issued: 2026-07-30 Comments due: 2026-08-13 Record: https://apps.ecology.wa.gov/separ/Main/SEPA/Record.aspx?SEPANumber=202603209”