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
Supply Creek Salyer 1A20223WNTR Trinity 40.904109, -123.581749 The Project involves the installation of a single crossing on an intermittent, perennial stream. This includes the installation of a metal culvert, associated fill and armoring, and road rock. The Project would reduce erosion and sediment input into the watercourse and ensure the road is suitable for vehicular traffic. Temporary impacts would occur during culvert installation and are limited to possible sediment delivery and water diversion intended to keep the crossing dry during installation. Permanent impacts include the placement of fill material and rock armoring at the crossing and on the road approaches leading to and from the crossing. Small vegetation and trees might be removed during construction, but regeneration and revegetation would occur naturally and rapidly. 1/14/2021 - 2/4/2021 Brandon Stevens, Brandon.Stevens@waterboards.ca.gov (707) 576-2377

Hayfork Grade Culverts Project (EA: 02-3H560) CDOT Highway 3 PM 22.43 & 30.38



40.618232° N, 122.998116° W
40.647209° N, 122.946960° W

The project will replace two deficient culverts on State Route 3 with new culverts and downdrains installed at a higher elevation. Constructed fill and streambed material matching the existing material will be placed at the inlets to raise the flow line to the new elevation. Rock slope protection (RSP) will repair a scoured area at one outlet. Construction will occur over 77 days in the dry season from April to October 2021. The project includes 405.10 linear feet (LF) of temporary impacts and 31.6 LF of permanent impacts to streambed and 0.012 acres of riparian impacts for tree removal. A total of 14 trees will be planted to address permanent impacts. Areas of temporary impact will be restored to pre-project conditions

December 30, 2020 to January 19,2021

Susan Stewart

Inside Park Culverts (EA: 01-48802) CDOT Highway 199 PM 1.11 - 2.56 1A20191WNDN Del Norte 41.810° N, 124.113° W The Project corrects deficient drainage facilities that compromise the structural integrity of the roadway and prevent upstream fish migration by replacing or rehabilitating four deteriorating culverts on US 199 in Del Norte County from post miles (PMs) 1.11 to 1.72 and improving fish passage through the Clarks Creek culvert at PM 2.56. Rehabilitation includes drainage system replacement using the cut and cover method or trenchless methods (i.e. jack and bore) and correcting deficient inlet and/or outlet conditions. Temporary impacts include 0.12 acres or 778.5 linear feet to stream bed. Permanent impacts include 56 linear feet or 0.01 acres of stream bed due to end treatments and fishway construction. Three of the culverts will have larger diameters by 18 inches and shorter lengths by 48.5 linear feet overall. These improvements will offset all the permanent impacts and no mitigation is required. To address temporary impacts, vegetation reestablishment and stabilization of areas disturbed by construction will be employed, consistent with State Park’s genetic integrity guidelines. Revegetation will be accomplished through reinstallation of plants salvaged prior to construction and via natural recruitment of volunteer native species. The Project would occur within approximately 217 working days over two construction seasons from May 2021 to November 2022. Instream work would be scheduled from June 15 to October 15. December 28, 2020 to January 17, 2021 Susan Stewart