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Under Section 303(d) of the Clean Water Act, states, territories, and
authorized tribes are required to develop a list of water quality limited segments.
The waters on the list do not meet water quality standards, even after point sources of
pollution have installed the minimum required levels of pollution control technology.
The law requires for waters on the list that priority rankings be established for the
development of action plans, called Total Maximum Daily Loads (TMDLs), to improve the
water quality.
- New ! Opportunity For Public Comment
The public is invited to comment on the Proposed 2006 Federal Clean Water Act
Section 303(d) List of Water Quality Limited Segments For California. The State
Water Resources Control Board will consider the draft final list at its October 25,
2006 meeting.
- Public Notice - Deadline to receive comments is October 20, 2006 (5 pm)
- Proposed 2006 Clean Water Act Section 303(d) List of Water
Quality Limited Segments
The following documents contain the draft list of waters and pollutants that
still need TMDLs. This portion of the list is required by section 2.1 of the
Listing Policy.
- Statewide - Entire List (724 KB, 236 pages)
- Region 1 - North Coast (133 KB, 34 pages)
- Region 2 - San Francisco Bay (141 KB, 35 pages)
- Region 3 - Central Coast (86 KB, 27 pages)
- Region 4 - Los Angeles (143 KB, 47 pages)
- Region 5 - Central Valley (104 KB, 32 pages)
- Region 6 - Lahontan (88 KB, 27 pages)
- Region 7 - Colorado River Basin (23 KB, 6 pages)
- Region 8 - Santa Ana (32 KB, 9 pages)
- Region 9 - San Diego (91 KB, 29 pages)
- List of Water Quality Limited Segments Being Addressed By USEPA Approved TMDLs
(158 KB, 52 pages)
This portion of the section 303(d)list contains those waters and pollutants where a TMDL has been approved and an implementation is available but water quality standards are not yet met. This portion of the list is required by section 2.2(1) of the Listing Policy.
- List of Water Quality Limited Segments Being Addressed By Action Other Than TMDLs
(14 KB, 3 pages)
This portion of the section 303(d) list contains those waters and pollutants where the water quality problem is being addressed by an action other than a TMDL and water quality standards are not yet met. This portion of the list is required by section 2.2(2) of the Listing Policy.
- The Recommended Changes
The changes recommended for the section 303(d)list are presented in a Staff Report, presented below. The Staff Report has four volumes. You can select to download an entire report or portions of a report.
- Volume I - Revision of the Clean Water Act Section 303(d) List of Water Quality Limited Segments
This document contains the listing methodology used, summaries of the proposed additions, deletions and area changes; the 2002 section 303(d) list; and references to all data and information in the administrative record. (Note: These documents can be navigated using the bookmarks embedded in the document.)
- Volume II - Water Body Fact Sheets Supporting the Listing and Delisting Recommendations
This documents contains the fact sheets supporting recommendations for listing, delisting, and area changes for the North Coast, San Francisco Bay, Central Coast, and Los Angeles regions
(Note: These fact sheets can be navigated using the bookmarks embedded in the document.)
- Entire Report (3.62 MB, 1,086 pages)
- Region 1 - North Coast Region (416 KB, 90 pages)
- Region 2 - San Francisco Bay Region (624 KB, 172 pages)
- Region 3 - Central Coast Region (726 KB, 214 pages)
- Region 4 - Los Angeles Region (1.91 MB, 604 pages)
- Volume III: Water Body Fact Sheets Supporting
the Listing and Delisting Recommendations
This document contains the fact sheets supporting
recommendations for listing, delisting, and area changes for the Central
Valley, Lahontan, Colorado River Basin, Santa and San Diego regions.
(Note: These fact sheets can be navigated using the bookmarks embedded in the document.)
- Entire Report (2.67 MB, 760 pages)
- Region 5 - Central Valley Region (756 KB, 196 pages)
- Region 6 - Lahontan Region (286 KB, 70 pages)
- Region 7 - Colorado River Basin Region (352 KB, 78 pages)
- Region 8 - Santa Ana Region (431 KB, 122 pages)
- Region 9 - San Diego Region (907 KB, 288 pages)
- Volume IV: Responses to Comments (1.03 MB, 186 pages)
This document contains a summary of responses to comments received
- Additional Staff Recommendations
Two additional staff reports have been assembled
that document State Water Board staff review of data and information that
resulted in (1) recommendations to not place waters or pollutants on the
section 303(d) list and (2) recommendations to remove waters or pollutants from
the section 303(d) list.
- Staff Report -
Evaluation of Data and Information Related to the
Clean Water Act Section 303(d) List of Water Quality Limited Segments:
Water Body Fact Sheet Supporting “Do Not List” Recommendations.
- Entire Report (6.46 MB, 1,978 pages) (Note: This document can be navigated using the bookmarks embedded in the document.)
- Region 1 - North Coast Region (336 KB, 74pages)
- Region 2 - San Francisco Bay Region (420 KB, 96 pages)
- Region 3 - Central Coast Region (524 KB, 122 pages)
- Region 4 - Los Angeles Region (759 KB, 230 pages)
- Region 5 - Central Valley Region (728 KB, 190pages)
- Region 6 - Lahontan Region (150 KB, 14 pages)
- Region 7 - Colorado River Basin Region (358 KB, 86 pages)
- Region 8 - Santa Ana Region (463 KB, 110 pages)
- Region 9 - San Diego Region (3.12 MB, 1,022 pages)
- Staff Report - Evaluation of Data and Information Related to the Clean Water Act Section 303(d) List of Water Quality Limited Segments: Water Body Fact Sheets Supporting “Do Not Delist” Recommendations. (Note: These fact sheets can be navigated using the bookmarks embedded in the document.)
- Entire Report (2,213 KB, 538 pages)
- Region 1 - North Coast Region (323 KB, 46 pages)
- Region 2 - San Francisco Bay Region (542 KB, 116 pages)
- Region 3 - Central Coast Region (344 KB, 72 pages)
- Region 4 - Los Angeles Region (704 KB, 196 pages)
- Region 5 - Central Valley Region (279 KB, 196 pages)
- Region 6 - Lahontan Region (183 KB, 6 pages)
- Region 7 - Colorado River Basin Region (196 KB, 10 pages)
- Region 8 - Santa Ana Region (205 KB, 12 pages)
- Region 9 - San Diego Region (282 KB, 40 pages)
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