5900 36TH AVE W SEPA 015 - 034 - SOUNDVIEW BUSINESS CAMPUS - VERITAS Land Use Decision Documents 2025-04-22

F. For projects requiring individual 401 certification, applicants must provide the EPA with the same documentation provided to the Corps, (as described in Corps' National General Condition 31, Pre - Construction Notification), including, when applicable: (a) A description of the project, including site plans, project purpose, direct and indirect adverse environmental effects the project would cause, any other U.S. Department of the Army permits used or intended to use to authorize any part of the proposed project or any related activity. (b) Delineation of special aquatic sites and other waters of the United States. Wetland delineations must be prepared in accordance with the current method required by the Corps. (c) A statement describing how the mitigation requirement will be satisfied. A conceptual or detailed mitigation or restoration plan may be submitted. (d) Other applicable requirements of Corps National General Condition 31, Corps Regional Conditions, or notification conditions of the applicable NWP. A request for individual 401 certification- review is not complete until the EPA receives the applicable documents noted above and the EPA has received a copy of the final authorization letter from the Corps providing coverage for a proposed project or activity under the NWP Program. G. No activity, including structures and work in navigable waters of the United States or discharges of dredged or fill material, may consist of unsuitable material (e.g., trash, debris, car bodies, asphalt, etc.) and material used for construction or discharged must be free from toxic pollutants in toxic amounts (see Section 307 of the Clean Water Act). H. An individual 401 certification is based on adequate compensatory mitigation being provided for aquatic resource and other water quality -related impacts of projects or activities authorized under the NWP Program. A 401 certification is contingent upon written approval from the EPA of the compensatory mitigation plan for projects and activities resulting in any of the following: • impacts to any aquatic resources requiring special protection (as defined in EPA General Condition A or Corps General Regional Condition 1) • any impacts to tidal waters or non -tidal waters adjacent to tidal waters (applies to NWP 14) • Or, any impacts to aquatic resources greater than 1/ acre. Compensatory mitigation plans submitted to the EPA shall be based on the Joint Agency guidance provided in WetlandMitigation in Washington State, Parts I and 2 (Ecology Publication #06-06-011 a and #06-06-011b) and shall, at a minimum, include the following: (1) A description of the measures taken to avoid and minimize impacts to wetlands and other waters of the U.S. (2) The nature of the proposed impacts (i.e., acreage of wetlands and functions lost or degraded) (3) The rationale for the mitigation site that was selected (4) The goals and objectives of the compensatory mitigation project (5) How the mitigation project will be accomplished, including proposed performance standards for measuring success (including meeting planting success standard of 80 percent survival 19