Pacific Southwest, Region 9
Serving: Arizona, California, Hawaii, Nevada, Pacific Islands, Tribal Nations
Monitoring, Assessment and TMDLs
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Nevada Water Quality
Nevada Division of Environmental Protection is responsible for conducting monitoring, assessment, reporting under CWA Sections 303(d) and 305(b), and TMDL development for the State of Nevada. More information about Nevada's programs can be found at Nevada's Division of Environmental Protection's Bureau of Water Quality Planning page or through EPA and Nevada staff.
Nevada's Integrated Report
NOTICE OF AVAILABILITY FOR PUBLIC REVIEW
EPA’s Action to Add Topaz Lake (for Mercury in Fish Tissue) to Nevada’s
2012 List of Waters Requiring a Total Maximum Daily Load
August 4, 2014
The United States Environmental Protection Agency (EPA) is soliciting public comments on EPA’s action to add Topaz Lake (for Mercury in Fish Tissue) to Nevada’s 2012 list of waters requiring a total maximum daily load (TMDL), Nevada’s 303(d) list. On April 14, 2014, Nevada submitted its list of waters requiring a TMDL under Clean Water Act Section 303(d)(2). Section 303(d)(2) requires that states submit and EPA approve or disapprove lists of waters not meeting water quality standards, where existing technology-based pollution controls are not stringent enough to attain, or maintain, state water quality standards, and for which a TMDL must be prepared.
Nevada identified, in its 2012 Water Quality Integrated Report, various waterbody-pollutant combinations as requiring TMDLs. See, 2012 Water Quality Integrated Report, Attachment 4, Category 5 Waters, available at the Nevada Division of Environmental Protection web page.
On August 4, 2014, EPA determined that Nevada's list of waters requiring a TMDL partially met the requirements of Clean Water Act Section 303(d), and approved each of the State's listings included in its 2012 Integrated Report, Attachment 4, Category 5 Waters list. During its review, EPA also identified Topaz Lake (for Mercury in Fish Tissue) that met federal listing requirements but was not included in Nevada’s list. Accordingly, EPA has identified one additional waterbody-pollutant combination as requiring a TMDL. EPA’s determination and the waterbody-pollutant listing that EPA has added are available below.
This notice announces EPA’s action to add the waterbody-pollutant listing to Nevada’s 2012 Section 303(d) list. After considering received public comments, U.S. EPA will make any necessary adjustments to its decision and transmit the final list to the state.
Contact Information and Comment Deadline
All interested persons wishing to comment on EPA’s action to add Topaz Lake (for Mercury in Fish Tissue) to Nevada’s 2012 303(d) list of waters requiring a TMDL may submit written comments to David Guiliano at the email address or postal address below.
David Guiliano (email@example.com)
U.S. Environmental Protection Agency
75 Hawthorne St, WTR-2-1
San Francisco, CA 94105
To ensure that it is considered, comments must be submitted in writing on or before September 12, 2014. EPA will prepare a document summarizing how public comments were considered in the final EPA decisions. The summary of comments and responses will be available at EPA’s website when the 2012 303(d) list for Nevada is finalized.
- EPA’s August 2014 Partial Approval / Partial Disapproval Letter (PDF) (2 pp, 252K) and Enclosure (PDF) (10 pp, 77K), with the added waters
- EPA’s Public Notice for public comment period (PDF) (1 pp, 37K) , Comments are due by September 12, 2014
State DocumentsNevada’s 2012 Section 303(d) list of waters requiring a TMDL is available in Attachment 4 of Nevada’s 2012 Water Quality Integrated Report, available at the Nevada Division of Environmental Protection web page.
TMDLs in Nevada
Information on the status of TMDLs being developed or previously developed by Nevada Division of Environmental Protection can be found at NDEP's Total Maximum Daily Loads page.
Lake Tahoe TMDL
- Lake Tahoe TMDL Submittal Letter (PDF) (2 pp, 792K)
- Final Lake Tahoe TMDL (PDF) (338 pp, 5.1MB)
- NDEP Revisions to Lake Tahoe TMDL (PDF) (2 pp, 214KB)
- Watershed Priorities in the Tahoe Basin
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