About Us

Environmental Compliance provides extremely broad support to all of the district’s civil works federal actions and programs in three functional areas: environmental sciences as well as compliance with federal biological compliance laws (Biological Resources Team) and general environmental compliance (Environmental Resources Team) laws. Our two functional teams conduct roughly 400 environmental effect analysis determinations and appropriate documentation annually under the National Environmental Policy Act and the Endangered Species Act, amongst numerous other environmental laws and Executive Orders.

We consult with the state, federal and tribal environmental regulatory and natural resources management agencies on federal actions where there are interests external to the Corps and ensure the Corps meets requirements for consultation.

Columbia Park Land Conveyance

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The U.S. Army Corps of Engineers, Walla Walla District, will be releasing the draft Finding of No Significant Impact (FONSI) and Columbia Park Land Conveyance Environmental Assessment (EA) for the Proposed Transfer of 72-acres of Federal Lands to the City of Kennewick for public review on January 16, 2024. This EA and draft FONSI contain the USACE’s consideration of possible environmental impacts associated with the proposed land transfer.

Any questions can be directed to Mr. John Hook at 509-527-7239 or at john.d.hook@usace.army.mil.

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Genesee Wastewater Improvements Project

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Interested parties are hereby notified that Commander KingSlack of the U.S. Army Corps of Engineers, Walla Walla District (USACE), signed the Final Finding of No Significant Impact (FONSI) for the City of Genesee (City) Wastewater Improvements Project located in Genesee, Idaho.  USACE has authority to financially assist the City under Section 595 of the Water Resources Development Act of 1999 (Public Law [PL] 106-53), as amended and may provide design and construction assistance to non-federal interests for water-related environmental infrastructure and resources protection and development projects. USACE is proposing to share costs with the City of Genesee for construction of one component of the City’s overall wastewater system improvements— a new tertiary treatment for ammonia removal referred to as the Submerged Aerated Rock Filter (SARF) system, and associated USACE review and coordination.

USACE prepared a draft FONSI for the proposed action which was sent out for a 15-day public review period which began on October 18, 2023. No significant impacts to environmental resources were identified during the environmental analysis or public comment period, therefore an Environmental Impact Statement is not required. Two comments were received and addressed.

Questions regarding the wastewater system improvements project can be directed to Michele Palmer at (509) 975-9659.

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Malad Section 595

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Notice of Availability of the Final Finding of No Significant Impact (FONSI) and applicant prepared Environmental Assessment for the Malad City Wastewater Treatment System Improvements Project November 2023

The U.S. Army Corps of Engineers, Walla Walla District (USACE) has conducted an environmental analysis of the City of Malad, Idaho, Environmental Assessment (EA), dated May 2018. USACE will provide financial assistance under Section 595 of the Water Resources Development Act of 1999 to Malad City (City) to help with portions of their proposed action to make improvements to the wastewater treatment system. USACE contributions include: the removal of existing fences around the old treatment facility and the installation of a new chain link fencing and gates around the newly constructed treatment lagoons, construction assistance for the Precast (Operations) Building, funding for engineering technical assistance during construction, and for Davis-Bacon wage interviews and grant administration. No significant impacts to environmental resources were identified during the environmental analysis or public comment period, therefore an Environmental Impact Statement is not required. The FONSI was signed by the Walla Walla District Commander (Commander Kingslack) on October 27, 2023.

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Fort Hall Wastewater System Improvements Project, October 2023

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Notice of Availability of the Final Finding of No Significant Impact (FONSI) and Environmental Assessment for the Fort Hall Wastewater System Improvements Project October 2023​

The U.S. Army Corps of Engineers, Walla Walla District (USACE) has conducted an environmental analysis of the Fort Hall Wastewater System Improvements Project dated October 2023.  USACE will provide Section 595 assistance to the Shoshone-Bannock Tribes for upgrades to the Fort Hall wastewater system for two project elements (increments of work), out of fifteen improvements identified in a 2017 Wastewater Facilities Planning Study, specifically: (1) Old Housing Sewer Main Replacement and (2) Fort Hall Interceptor Main Replacement. Cost share assistance will be provided when funds are made available for that purpose. No significant impacts to environmental resources were identified during the environmental analysis or public comment period, therefore an Environmental Impact Statement is not required.  The FONSI was signed by the USACE Walla Walla District Commander (Commander KingSlack) on October 5, 2023.

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Lucky Peak Master Plan

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The Lucky Peak Master Plan has its own webpage.

Yakima River Delta Ecosystem Restoration

Sweetwater Creek Ecosystem Restoration

Garden City Flood Risk Management General Investigation (GI) Study

Lower Snake River Navigation Channel Maintenance Dredging

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The Finding of No Significant Impact (FONSI), the environmental compliance decision document for the lower Snake River Navigation Channel Maintenance Environmental Assessment, was signed by the Walla District Commander (Commander KingSlack) on September 27, 2022.  Signing of the FONSI confirms that the Corps did not find any significant impacts to the environment associated with implementation of the dredging and disposal action.  The Corps’ contractor completed dredging on February 25, 2023.  Please see the links below to access the signed FONSI and attached Comment Response Document, the Environmental Assessment, and all supporting appendices.

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Federal Participation in Watercraft Inspection Stations, Updated Integrated Letter Report and Programmatic Environmental Assessment

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The Finding of No Significant Impact (FONSI) was signed by the Director of Civil Works on June 27, 2022 for the Federal Participation in Watercraft Inspection Stations, Updated Integrated Letter Report and Programmatic Environmental Assessment, Columbia River Basin (LR/PEA). In compliance with the National Environmental Policy Act, the Corps produced the Updated LR/PEA to evaluate the potential economic and environmental effects of including the states of Nevada and Wyoming in the current and successful federal cost-share program of establishing and maintaining watercraft inspection stations in the Columbia River Basin to help prevent the spread of aquatic invasive species, specifically zebra and quagga mussels. The current program is operated in Idaho, Montana, Oregon, and Washington. Expansion of the program to Nevada and Wyoming will help to prevent the spread of aquatic invasive species to reservoirs in the Columbia River Basin, operated by the U.S. Army Corps of Engineers.

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Columbia Park Land Conveyance

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The Walla Walla District of the U.S. Army Corps of Engineers (Corps) is considering a request from the City of Kennewick, Washington, to dispose of approximately 72 acres of land in Columbia Park. The requested land disposal includes soccer fields, the Playground of Dreams, and Columbia Park Pond. The land disposal in Columbia Park is being considered under the Water Resources Development Act of 1996, Section 501(i). 

Public input/comments were gathered from July 8 through August 8, 2019 and the comment period has since closed.

For more information please contact the Corps’ environmental coordinator at 509-527-7256.

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Contact Us

Environmental Compliance
201 N. 3rd Ave.
Walla Walla, WA 99362

NEPANWW@usace.army.mil