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Biological Resources, MONK &ASSOCIATES E Impacts and Mitigations Tracy Facility Expansion Site following mitigation should be implemented to offset impacts to this species. Granite would be responsible for funding and implementing the mitigation. The following mitigation is based on M&A's discussions with CDFG personnel(C. Bean, CDFG,pers. comm., 1998) and the BOC's 1993 survey and mitigation guidelines. • if it is determined that burrowing owls occur on the project site, a 1:1 acreage replacement required b CDFG to offset permanent impacts to burrowing owl habitat (i.e., ratio would be req y P P e acre of burrowing owl habitat impacted, one acre of mitigation property must be for every g ry purchased). • A burrowing owl habitat mitigation plan must be prepared and would be subject to the review and approval of CDFG. A Mitigation Agreement(MA)that will legally bind the applicant to the conditions of the plan should be executed between CDFG and the applicant. s • The mitigation plan should identify the mitigation site and any activities necessary to enhance the site,including the construction of artificial burrows. The plan should also include a description of monitoring and management methods proposed at the mitigation site. Contingency measures for any anticipated problems should be identified in the plan. r Land identified to off-setimpacts to burrowing owls must be protected in perpetuity either by _ a conservation easement or fee title acquisition. Burrowing owl mitigation lands should be identified in the general vicinity of the project site. • Monitoring and management of any lands identified for mitigation purposes should be the responsibility of the applicant for at least five years. An annual report should be prepared for submittal to CDFG by December 31 of each year. + If it is necessary to evict non-nestingowls from their burrows, eviction procedures should be implemented at least once per week prior to construction. Eviction activities would not be allowed by CDFG until the mitigation plan has been finalized and the MA has been executed. • If eviction is required, one artificial nest burrow or enhanced natural burrow, should be established at the mitigation site. The exact location of artificial burrow should be determined at the time of eviction based on current burrowing activity on the project site. • Artificial burrows, if required, should be patterned after Olenick(1987). Olenick(op. cit.) constructed artificial burrows consisting of a 12 in. x 12 in.x 8 in. wooden nesting chamber with a removable top and two, 6-foot corrugated and perforated 6-inch diameter plastic drain pipes for burrow tunnels. ;The nest chamber and tunnels are buried with approximately two feet of dirt to maintain the thermal integrity of the nest. No artificial burrow should be constructed in areas with high winter water tables. All artificial burrow locations would be cogrdinated with CDFG. Since Granite will be purchasing mitigation lands to offset impacts to the San Joaquin kit fox, these mitigation lands should be suitable for the burrowing owl, and no additional land t 33