Water Quality Certification Public Notices

Water Quality Certification Actions - Applicants for federal permits that involve dredge or fill activities in surface waters (including wetlands) are required to obtain certification from the state verifying that the activity will comply with state water quality standards. Most of these federal permits are referred to as 404 permits (in reference to Section 404 of the federal Clean Water Act). Applicants for some other types of federal license or permits (ex. FERC licenses) that authorize activities that may result in discharges to waters of the United States are also required to obtain state certification. This state certification is called 401 Certification (in reference to Section 401 of the Clean Water Act). In California, 401 certification actions are the responsibility of the State and Regional Water Quality Control Boards. It is the policy of this Regional Board to provide public notice of pending 401 Certification actions in order to gather comments from concerned agencies and the public. The following list contains notification of pending 401 Certification actions.

 Project Name WDID County  Location Description Comment period Contact Info
California Department of Transportation MEN 128, PM 37.44 to 49.08, Culvert Replacement Project (01-0L740) 1B22146WNME MENDOCINO PM 37.44
39.915°N, 123.280°W
PM 38.12
39.914°N, 123.269°W
PM 47.14
38.887°N, 123.123°W
PM 47.27
38.886°N, 123.121°W
PM 47.30
38.885°N, 123.121°W
PM 49.08
38.871°N, 123.096°W
The Project will replace culverts along approximately 12 miles of State Route 128 in Mendocino County, from post mile (PM) 37.44 to PM 49.08. Six (6) of the 8 culverts to be replaced are within waters of the US and State and are subject to this permit. Construction includes replacement of culverts, rock-slope-protection, headwalls and downdrains as needed. Permanent impacts to streams of approximately 20 LF will be offset by 9 LF of shortened culvert, and 171 LF of culvert upsized to 24-inch diameter. The culvert replacement work will amount to approximately 522 LF (0.0336 acres) of temporary impacts to streams. Construction is planned over approximately 45-working days from June 15 2023 to October 15, 2024.  January 24, 2023 through Febuary 13, 2023 Susan Stewart
Susan.Stewart@waterboards.ca.gov
707-576-2657
California Department of Transportation
CDOT Highway 96 PM 26.05 - 99.62 Oakbar Culverts Project (02-1J010)
1B22096WNSI SISKIYOU PM 27.81 
41.6546°N / 123.4597°W
PM 52.79 
41.8667°N / 123.3064°W
PM 81.04
41.8413°N / 122.9167°W
PM 84.56 
41.8365°N / 122.8556°W
PM 84.59 
41.8364°N / 122.8550°W
PM 99.62 
41.8299°N / 122.6493°W
The Project will replace culverts along approximately 74 miles of State Route 96 adjacent to the Klamath River in Siskiyou County, from post mile (PM) 26.05 to PM 99.62. Six (6) of the 13 culverts to be replaced are within waters of the US and State and are subject to this permit. Construction includes culvert replacement by cut-and-cover method, addition of drainage inlets, down drains, one flared end section, and installation of RSP interplanted with willow at two locations. Permanent impacts to streams of approximately 81.8 LF will be offset by 26.5 LF of shortened culvert, 144.5 LF of culvert upsized to 24-inch diameter, and interplanting of 22 LF of willow. Culvert replacement amounts to approximately 355.2 LF of temporary impacts to streams, and 0.0103 acres of riparian vegetation will be trimmed for constucton access. Construction is planned over 64-working days from May 15 to October 15, 2023. January 20, 2023 through February 9, 2023 Susan Stewart
Susan.Stewart@waterboards.ca.gov
707-576-2657
Smith River Water Diversion Project 1A22047WNDN Del Norte 41.91340, -124.17101 The proposed Project would install a new pump intake/self-cleaning screening system intended to prevent incidental take of Southern Oregon/Northern California Coast (SONCC) Evolutionary Significant Unit (ESU) Coho Salmon (Oncorhynchus kisutch). The pumps, air compressor unit with tank, and the electrical panel would be housed on an existing raised wooden platform outside the riparian zone upslope of the intake/screen. The Project would also include the construction of a new underground mainline piping system that would replace the existing agriculture water conveyance ditch. The new line would be approximately 1,500 feet long and would tie into an existing irrigation mainline. The trench is predominantly outside the riparian area on pastureland. No trees will be removed during excavation activities. Overall, the Project would result in 384 square feet (147 linear feet) of temporary impacts to riparian areas and 8 square feet (4 linear feet) of temporary impacts to the stream channel. There are no permanent impacts. Installation of the intake/screen would result in a temporary turbidity pulse, but this will dissipate quickly. Proposed habitat enhancement actions include the planting of approximately 1,100 square feet of levee area immediately west of the diversion project. The area would be planted with a mix of redwood, Sitka spruce, red alder and big leaf maple. 1/17/2023 - 2/6/2023 Ryan Bey: ryan.bey@waterboards.ca.gov
(707) 576-2679