A. Grading, erosion control practices, sediment control practices and waterway crossings shall meet the design criteria set forth in the most recent version of the MCFCD Drainage Policies and Standards, and shall be adequate to prevent transportation of sediment from the site to the satisfaction of the public works director or his or her designee.
B. Clearing and grading of natural resources shall not be permitted, except when in compliance with all other chapters of this code. Clearing techniques that retain natural vegetation and drainage patterns, as described in the MCFCD Drainage Policies and Standards, shall be used to the satisfaction of the public works director or his or her designee.
C. Phasing shall be required on all sites disturbing greater than thirty acres, with the size of each phase to be established at plan review, and as approved by the public works director or his or her designee.
D. Erosion control requirements shall include the following:
1. Soil stabilization shall be completed within five days of clearing or inactivity in construction;
2. If seeding or another vegetative erosion control method is used, it shall become established within two weeks, or the public works director, or his or her designee, may require the site to be reseeded, or a nonvegetative option employed;
3. Special techniques that meet the design criteria outlined in the MCFCD Drainage Policies and Standards on steep slopes or in drainage ways shall be used to ensure stabilization;
4. Soil stockpiles must be stabilized or covered at the end of each workday;
5. The entire site must be stabilized, using a heavy mulch layer or another method that does not require germination to control erosion, at the close of the construction season;
6. Techniques shall be employed to prevent the blowing of dust or sediment from the site;
7. Techniques that divert upland runoff past disturbed slopes shall be employed.
E. Sediment controls requirements shall include:
1. Settling basins, sediment traps, or tanks and perimeter controls;
2. Settling basins that are designed in a manner that allows adaptation to provide long-term stormwater management, if required by the public works director or his or her designee;
3. Protection for adjacent properties by the use of a vegetated buffer strip in combination with perimeter controls.
F. Construction site access requirements shall include:
1. A temporary access road provided at all sites; and
2. Other measures required by the public works director, or his or her designee, in order to ensure that sediment is not tracked onto public streets by construction vehicles or washed into storm drains. (Ord. 1397.18, § 1 (part), 2019)