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Monitoring, Assessment and TMDLs
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Impaired and Threatened Waters (Section 303(d)) Lists
Arizona's Section 303(d) List
On Nov.16, 2004, EPA partially approved and partially disapproved Arizona's 303(d) listing submission. EPA identified additional waters and pollutants which need to be included on Arizona's final 303(d) list. The documents describing EPA's review of the State's submittal and EPA's invitation for public comments for added waters are provided below.
EPA Documents
- Nov. 16, 2004: Staff report and letter (PDF) (25 pp., 207K) regarding EPA's initial decision on Arizona's 2004 Section 303(d) list submittal, and EPA's list of waters proposed for addition to Arizona's list.
- March 17, 2005:
- Letter (PDF) (5 pp, 104K) regarding EPA's final decision on the 2004 Arizona Section 303(d) list
- Responsiveness summary (PDF) (13 pp, 78K) regarding EPA's final decision on the 2004 Arizona Section 303(d) list.
State Documents
Arizona's 2004 Integrated Report (305(b) Water Quality Assessment and 303(d) list) is available from the Arizona Department of Environmental Quality (ADEQ) 
. It contains ADEQ's 2004 submittal to EPA. The final 2004 Arizona list is a combination of ADEQ's 303(d) list submittal and EPA's final decision (see March 17 letter above)
Questions concerning Arizona's list should be directed to:
Steve Pawlowski (pawlowski.steve@azdeq.gov)
ADEQ
(602) 771-4219
California's Section 303(d) List
Link to Los Cerritos Channel TMDLs
On May 29, 2008, EPA revised its previous decision to add microcystin toxins as an additional cause of impairment to one Klamath River segment (Middle Hydrologic Area: Oregon to Iron Gate) previously listed by California in its 2006 Clean Water Act Section 303(d) List. EPA solicited public comment on its action, and has now completed its review of the comments received. Based on comments from the North Coast Regional Board, EPA agreed to revise the description of the segment which EPA is listing as impaired due to “microcystin toxins.” EPA identified this impaired portion as “the reach of the Klamath River including the Copco and Iron Gate Reservoirs.” Accordingly, this segment does not include Klamath River upstream of Copco I Reservoir to Oregon.
- EPA’s May 2008 revised decision for microcystin toxins in Klamath River (PDF) (8 pp, 548K)
- EPA’s responsiveness summary (1 pg, 51K)
On March 13, 2008, EPA reconsidered its prior approval of the omission of microcystin toxins listings for three Klamath River segments, and determined to add a listing for microcystin toxin for one of these three segments, “Klamath River HU, Middle HA, Oregon to Iron Gate”. California’s 2006 Section 303(d) List already identifies each segment of the Klamath River within California as impaired due to Nutrients, Organic Enrichment/Low Dissolved Oxygen, and Temperature. EPA’s reconsideration of its decisions related to microcystin toxins and the Klamath River, and its determination to add a listing for microcystin toxins for one of the river’s segments, do not affect EPA’s determinations regarding any other portion of California’s Section 303(d) List. Neither EPA’s approval of the State’s listings for the Klamath River listings, nor EPA’s determination to add the listing for microcystin toxins, extends to any water bodies located within Indian country, as defined in 18 U.S.C. 1151.
- EPA’s March 2008 decision document for microcystin toxins in Klamath River (PDF) (14 pp, 117K)
On Nov. 30, 2006, EPA partially approved California's 2004-2006 303(d) list submission. In summary, this action approved the State's list of impaired waters. On March 8, 2007, EPA partially disapproved California's 2004-2006 303(d) List; that is, we disapproved the State's omission of impaired waters that met federal listing regulations or guidance. EPA identified 36 additional waters bodies and associated pollutants for 34 waters to be added to the State's 303(d) list. EPA provided public notice and the opportunity for public comment on our proposed additions which ended April 16, 2007.
On June 28, 2007, EPA issued its final decision regarding the waters we added to the State’s List. See final transmittal letter with enclosures and responsiveness summary below.
- EPA's partial approval letter and enclosure for California's 2004-2006 list (PDF). (9 pp, 58K)
- EPA's partial disapproval letter and enclosures (PDF) for California's 2004-2006 303(d) List. (23 pp, 82K)
- EPA's final decision regarding waters added (PDF) to California’s 2004-2006 303(d) List. (22 pp, 326K)
EPA Contact
Peter Kozelka (kozelka.peter@epa.gov)
U.S. Environmental Protection Agency
Mail code: WTR-2
75 Hawthorne St.
San Francisco, CA 94105
(415) 972-3448
Questions concerning State's 303(d) list should be directed to:
Shakoora Azimi-Gaylon (sagaylon@waterboards.ca.gov)
(916) 341-5508
Hawaii's Section 303(d) List
On February 7, 2008, EPA approved Hawaii's 2006 Section 303(d) list. The approved letter and approved list is available from the State of Hawaii's Department of Health, Environmental Planning Office.
Questions concerning Hawaii's list should be directed to:
David Penn (david.penn@doh.hawaii.gov)
Hawaii Department of Health
(808) 586-4337
Nevada's Section 303(d) List
On September 1, 2005, EPA partially approved and partially disapproved Nevada's 303(d) listing submission. EPA proposed additional waters and pollutants to be included on Nevada's final 303(d) list. On February 4, 2005, EPA issued final decision regarding partial approval and partial disapproval of Nevada's 303(d) list.
EPA Documents
- September 1, 2005 letter (PDF) regarding EPA's initial decision on Nevada's 2004 Section 303(d) list submittal (20 pp, 62K, About PDF)
- EPA's list of waters proposed for addition to Nevada's list (PDF) (3 pp, 233K, About PDF)
State Documents
Nevada's 2004 Section 303(d) list) is available from the Nevada Division of Environmental Protection or by contacting:
John Heggeness (jheggene@ndep.nv.gov)
Nevada Division of Environmental Protection
333 W. Nye Lane, Suite 105
Carson City, NV 89706
(775) 687-9449
Pacific Islands' Section 303(d) Lists
American Samoa
On, November 18, 2008, EPA approved American Samoa’s 2008 Section 303(d) list. The approval letter and approved list are provided below.
EPA Documents
- Review of American Samoa 2008 Section 303(d) Water Body List (PDF) (5 pp, 30K)
- Amercian Samoa 2008 303(d) Approval Letter (PDF) (2 pp, 377K)
State Documents
- Territory of American Samoa Integrated Water Quality Monitoring and Assessment Report 2008 (PDF) (57 pp, 1.4M)
Questions concerning American Samoa’s list should be directed to:
Carl Goldstein (goldstein.carl@epa.gov)
U.S. EPA Region 9
(415) 972-3767
Commonwealth of Northern Mariana Islands
On, September 26, 2006, EPA approved Commonwealth of Northern Mariana Islands' 2006 Section 303(d) list. The approved list is available from the Commonwealth's Division of Enviromental Quality Web site as part of the 305(b) Report.
Questions concerning CNMI’s list should be directed to:
Michael Mann (mann.michael@epa.gov)
U.S. EPA Region 9
(415) 972-3505.
Guam
On November 29, 2007, EPA approved Guam's Section 303(d) list. The approved list is available from Guam's Environmental Protection Agency website.
Questions concerning Guam’s list should be directed to:
Michael Wolfram (wolfram.michael@epa.gov)
U.S. EPA Region 9
(415) 972-3027
Tribes
For information concerning listing and TMDL activities for tribal lands, please contact:
Peter Kozelka (kozelka.peter@epa.gov)
U.S. EPA region 9
(415) 972-3448
or
Wendell Smith (smith.wendell@epa.gov)
U.S. EPA Region 9
(415) 972-3421