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Notification #1600-2018-0342-R3 Streambed Alteration Agreement October 28, 2019 Page 15 of 24 removed vegetation and debris shall be disposed of according to State and local laws and ordinances. 2.17 Spoils. Permittee shall not place spoil where it could enter State waters or other sensitive habitat, such as riparian, or place over vegetation except as specifically noticed to and accepted by CDFW, in writing. Spoil shall be hauled offsite or stockpiled in an upland location where it shall be covered with plastic sheeting or visquine whenever it is evident that rainy conditions threaten to erode loose soils into sensitive habitats. 2.18 Vegetation Disturbance. No disturbance or removal of vegetation, other than that included in the Project Description and non-native, invasive plant species, such as, but not limited to, Scotch or French broom shall occur as a result of project activities. No modification to riparian trees may occur until after Permittee has achieved compliance with Measures 3.1 and 3.2. Vegetation outside the construction corridor shall not be removed or damaged without prior consultation and approval of CDFW. Vegetation may be disturbed only as specified in this measure. 2.19 Coffer Dams. The Permittee shall construct a sheetpile coffer dam around the gate construction area. Permittee shall coordinate coffer dam construction and dewatering with a Qualified Biologist to perform fish relocation activities. Unless otherwise approved by CDFW in writing, block nets must be placed at the upper and lower extent of the areas where fish and amphibians will be removed. Block net mesh shall be sized to ensure fish and amphibians upstream or downstream do not enter the areas proposed for dewatering between passes with the electrofisher or seine. 2.20 Daily Coffer Dam Checks for Stranded Aquatic Life. A Biological Monitor shall check daily for stranded aquatic life in the dewatered areas. If a smelt, salmonid or sturgeon is found within the dewatering area the Biological Monitor shall immediately stop work and contact CDFW for guidance. Capture methods may include fish landing nets, dip nets, buckets and by hand. Captured aquatic life shall be released immediately in the closest body of water adjacent to the work site. This measure does not authorize the take or disturbance of any State -listed species. 2.21 Coffer Dams and Work Area Seepage. The work area shall be periodically pumped dry of seepage under direct supervision of a Qualified Biologist of Biological Monitor. Pumps will be located on barges adjacent to the areas being dewatered. Any turbid water pumped from dewatered areas will be discharged into an area protected by a turbidity curtain to prevent suspended sediment from being transported upstream or downstream. Dewatering pumps shall not be operated without this supervision. Alternatively, Permittee may place pumps in upland flat areas, away from the stream channel. Pumps placed in uplands shall be secured by tying off to a tree or staked in place to prevent movement by vibration. Pump intakes shall be fitted with fish screens meeting CDFW criteria to prevent entrainment or impingement of small fish and amphibians. CDFW fish screen criteria can be found online at: