Publications Home || Browse by topic || Browse by program || Ecology website

Publication Summary

Our Ecology website has changed, which can cause broken links.
To report these, please contact us with the publication and broken link.


Errata: Pend Oreille River Temperature Total Maximum Daily Load: Water Quality Improvement Report

Publication number Date Published
10-10-065errata1October 2011
VIEW NOW Errata: Pend Oreille River Temperature Total Maximum Daily Load: Water Quality Improvement Report (Number of pages: 6) (Publication Size: 135KB)

Trouble viewing? Try these free options.
Author(s) Moore, David
Description On April 6, 2011, the Washington State Department of Ecology sent the Pend Oreille River temperature Total Maximum Daily Load (TMDL) to the Environmental Protection Agency (EPA) for approval. During EPA’s review and prior to its final approval, affected parties Seattle City Light (SCL) and the Pend Oreille Public Utility District No. 1 (PUD) initiated Ecology’s dispute resolution process. The dispute resolution process is a mechanism by which a local entity or citizen can request reconsideration of final TMDLs developed by Ecology, and/or bring a dispute of a procedural step in the TMDL development process. Among the outcomes of the dispute resolution process Ted Sturdevant, the Director of Ecology, decided to amend the TMDL with the following minor changes:

  • The TMDL needs to clarify that the compliance path for the Pend Oreille Public Utility District (PUD) is the compliance schedule outlined in the Water Quality Standards [WAC 173-201A-510(5)]. This is the same path as that used for all dams going through Federal Energy Regulatory Commission (FERC) re-licensing.

  • The temperature reduction target in the Boundary Dam forebay needs to reflect the temperature signal from the PUD’s Box Canyon Dam. The required temperature reduction in the Boundary forebay should be 0.76oC, not the 0.88oC listed in the TMDL. However, SCL’s allocation remains unchanged at natural conditions + 0.12oC. The distinction is that the PUD’s efforts to implement the TMDL will result in reduced temperatures flowing into Boundary Dam’s forebay. Therefore, the cumulative temperature reduction from both the PUD and SCL is a temperature reduction of 0.76oC in the Boundary Dam forebay.

  • Ecology intends to make these and possibly other minor changes in the online version of the TMDL (Ecology publication number 10-10-065) following review and comment by affected parties.

    The mission of the Department of Ecology is to protect, preserve, and enhance Washington’s environment. To help us meet that goal, please consider the environment before you print or request a copy.

    ADA Accessibility
    The Department of Ecology is committed to providing people with disabilities access to information and services by meeting or exceeding the requirements of the Americans with Disabilities Act (ADA), Section 504 and 508 of the Rehabilitation Act, and Washington State Policy #188.
    Visit Ecology’s website for more information.
    Contact Karin Baldwin at 509-329-3601 or
    Keywords water quality improvement report, water quality improvement, temperature, Total Maximum Daily Load
    WEB PAGE Water Quality Improvement Projects: Pend Oreille River Area
    WATERSHED Water Resource Inventory Area 62 Pend Oreille
    DATA Environmental Information Management (EIM) #PPIC0006


    Pend Oreille River Temperature Total Maximum Daily Load: Water Quality Improvement Report