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Executive Summary <br /> Level of <br /> Potential Impacts Significance Mitigation Measures <br /> 00 To protect special-status amphibians, ground-disturbing activities shall occur <br /> during the dry season from April 1 to October 31, if feasible and in <br /> accordance with other mitigation measures.Work outside of the dry season <br /> may occur with prior approval from CDFW and USFWS. No ground <br /> disturbance shall occur during wet weather. Wet weather is defined as 0.25 <br /> inch or more of rain in a 24-hour period.Activities may resume 24 hours after <br /> wet weather has ended and is no longer forecasted (60 percent chance or <br /> less)within 24 hours. <br /> Trenches will be backfilled as soon as possible. Excavated, steep-walled <br /> holes or open trenches shall be searched each day by on-site workers prior <br /> to construction to ensure no special-status species are trapped. Earthen <br /> escape ramps will be installed at intervals prescribed by a qualified biologist. <br /> Before such holes or trenches are filled,they shall be thoroughly inspected <br /> by on-site workers for trapped animals. If trapped animals are observed, <br /> escape ramps shall be installed immediately to allow escape. If a special- <br /> status species is trapped,the USFWS and/or CDFW shall be contacted <br /> immediately. No handling or moving of special-status species shall occur <br /> without prior authorization from the USFWS and/or CDFW. <br /> 00 All pipes, culverts, or similar materials shall be stored so as to prevent <br /> special-status wildlife species from using these as temporary refuges, and <br /> shall be thoroughly inspected for animals each morning before the pipe is <br /> moved or used in any way. If an animal is discovered inside a pipe,that <br /> section of pipe shall not be moved until a qualified biologist has been <br /> consulted to determine the appropriate action. No handling of special-status <br /> species shall occur without consultation with the USFWS and/or CDFW. <br /> cc Vehicles and equipment parked on the site during construction shall have the <br /> ground beneath the vehicle or equipment inspected for the presence of <br /> wildlife prior to moving. <br /> 00 Vehicular traffic shall use existing routes of travel. Off-road vehicle travel <br /> shall be minimized, and equipment use outside of the construction area shall <br /> be prohibited. <br /> cc A speed limit of 20 miles per hour or less shall be enforced within all <br /> construction areas. <br /> cc All trash and food items shall be contained in closed containers and removed <br /> regularly during construction, operations, and decommissioning to reduce the <br /> Griffith Energy Storage Project ES-19 Tetra Tech/SCH2O22120675 <br /> Draft Environmental Impact Report August 2023 <br />