Admin Order 58-09-07-F - Laserfiche WebLink

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(d) Uses or activities proposed to be established or to remain outside the lot's Water Quality Management Area; (e) All mitigation measures proposed, if any (See Section 2.2.3., below); (f) The dimensions of any areas that will be excluded from the lot's Water Quality Management Area pursuant to EC 9.4778; (g) Trees, shrubs, and other low-level plantings (e.g. forbs, grasses, rushes and ferns) proposed to be established, or to remain, within the lot's Water Quality Management Area, including extent of cover, species composition, and number or quantity of plants. 2.2.3. Mitigation measures. In conjunction with a proposed use, activity or adjustment, mitigation measures shall be taken to offset negative water quality impacts of the proposed use, activity or adjustment. Except as provided in (c) below, such mitigation measures must be located within the impacted lot's Water Quality Management Area. The following are suggested, not required, mitigation measures for increasing a post -proposal Water Quality Function Rating: (a) Plant vegetation to accomplish greater areas of, and diversity in, vegetative cover; (b) Remove structures or impervious areas that are excluded from the Water Quality Management Area pursuant to EC 9.4778 and replace with vegetation cover. (c) Submit a recorded use restriction that creates a permanent area of open space adjacent to the Water Quality Management Area that is equal to, or greater than the area to be disturbed by the proposed use or activity. (d) Plant with native species. (Native plant species thrive without chemical fertilizers and pesticides, typically require less water for irrigation than non-native species, and are low maintenance once established. Deeply rooted native plants increase the soil's capacity to store water and reduce water runoff.) (e) As permitted under EC 9.4780(3)(a), use bio -engineered Best Management Practices for repairing streambank instability and streambed downcutting. 2.3. Water Quality Function Rating. As part of a Water Quality Function Rating System certification, report or determination, the preparer shall submit a completed Water Quality Function Rating Table. The Table shall use the following methodology as a scoring and rating system for quantifying water quality function condition at the parcel -scale and within the lot's Water Quality Management Area, or any additional area as provided in 2.2.3.(d), above. The Table shall address the following conditions: (1) pre-proposal/existing conditions; (2) post -proposal Administrative Order - Page 8 of 12