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Biological Resources, MONK &ASSOCIATES Impacts and Mitigations Tracy Facility Expansion Site Notice of Termination must be submitted. A General Storm Water Permit is required after that for the ongoing operation unless the stormwater is fully captured on the site. 12.2.3 APPLICABILITY TO THE PRO= Pursuant to Section 401 of the Clean Water Act,it will be necessary for Granite to apply fora certification or waiver of water quality from the RWQCB prior to installing culverts in Corral Hollow Creek. Pursuant to Section 402 of the Clean Water Act, since mining activities will require disturbing greater than 5 acres of land, Granite's engineer will have to submit an NOT and SWPPP prior to initiation of mining. in addition, a General Storm Water Permit would be required for the ongoing mining operation. 12.3 California Department of Fish and Game Under Sections 1601-1603 of the California Fish and Game Code, CDFG regulates activities that divert,obstruct, or alter stream flow,or substantially modify the bed, channel, or bank of a stream or its riparian vegetation. Any proposed activity that would result in any of these modifications to a natural stream channel would require entering into a Streambed Alteration Agreement(SBAA) with CDFG prior to commencing with work in the stream. However,prior to authorizing such permits, CDFG typically reviews an analysis of the expected biological impacts, any proposed mitigation plans that would be implemented to offset biological impacts,and engineering and erosion control plans. When reviewing proposed development plans, CDFG examines stream set- back proposals, and typically requires set-backs of 25 feet to a 100 feet from the"top-of-bank." When proposed projects would not result in significant adverse biological impacts,or if such impacts would be adequately mitigated to a level considered less than significant,CDFG will enter into a SBAA with project applicants. The SBAA presents conditions that the applicant must follow to remain in compliance with Fish and Game Code. I 12.3.1 APPLICABILITY To THE PROJECT Corral Hollow Creek and a buffer area around this creek would not be mined at any time during the life of the mining project. The creek corridor is set-aside from the mining plan in a protected area that is ranges from approximately 500 feet wide on the western one-third of the creek alignment,to 300 feet wide on the eastern portion of the creek alignment. The total protected area within Corral Hollow Creek includes the 4.40-acre streambed plus a 10.5$-acre set-aside within the steam channel. The total protected area would be 14.98 acres, minus the width of a temporary road crossing that would be installed and removed each year during a two-year period begriming the first year of excavation. Installation of culverts in Corral Hollow Creek for the road crossing will require entering into a Streambed Alteration Agreement with CDFG prior to initiating the installation activity. I 24