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J If special-status plant populations cannot be avoided,consultations with DFG and/or USFWS may be required, depending on the listing status of the species present. These consultations shall determine appropriate mitigation measures for any populations that _ would be affected by the implementation of the proposed project. Appropriate measures may include the creation of off-site populations through seed collection or transplanting, preservation and enhancement of existing populations, or restoration or creation of suitable habitat in sufficient quantities to compensate for the impact. • California Red-Legged Frog • Before project activity, USFWS shall be consulted to determine whether widening of Grant Line Road has potential to adversely affect California red-legged frog. It may be necessary to conduct a formal habitat assessment and surveys to make such a determination. If it is determined that adverse — effects are unlikely to occur,no further mitigation shall be required. • If it is determined that adverse effects to California red-legged frog could occur,consultation with _ USFWS shall be conducted, and authorization for incidental take could be required. Specific mitigation measures would be developed during the consultation process. Measures designed to avoid and minimize take to the greatest extent feasible shall be developed and implemented. These may include limiting activities to certain seasons,minimizing vegetation removal and in-water construction activities,conducting pre-construction surveys, and conducting daily surveys and monitoring of construction areas. If necessary,appropriate compensation for loss of habitat and other adverse effects would also be developed. This could include measures such as enhancement of existing habitat and creation of additional habitat. • Swainson's Hawk • If project construction begins during the Swainson's Hawk nesting season, as defined by DFG(March 1 to September 15),pre-construction surveys shall be conducted in areas of suitable nesting habitat within 0.5 mile of project activity. Surveys shall be conducted by a qualified biologist within the 2 weeks before construction or tree removal begins. If no active nests are found,no further mitigation shall be required. • If active nests are found,impacts shall be avoided by establishment of appropriate buffers. No project activity shall commence within the buffer area until a qualified biologist confirms that the nest is no longer active. DFG guidelines recommend implementation of 0.25-or 0.5-mile buffers,but the size of the buffer may be adjusted if a qualified biologist and DFG determine it would not be likely to adversely affect the nest. Monitoring of the nest by a qualified biologist may be required if the activity has potential to adversely affect the nest. — • Burrowing Owl Before project activity, focused surveys for burrowing owls shall be conducted by a qualified biologist in areas of suitable habitat on and within 250 feet of the project site. Surveys shall be conducted in accordance with DFG protocols(DFG 1995). • If no occupied burrows are found in the survey area, a letter report documenting survey methods and findings shall be submitted to DFG,and no further mitigation is necessary. • If an occupied burrow with an active nest is found, impacts shall be minimized by establishing a 250-foot buffer area around the burrow. No project activity shall occur within the buffer area until a qualified biologist confirms that the nest is no longer active. The size of the buffer area may be adjusted if a qualified biologist and DFG determine it would not be likely to adversely affect the EDAW College Park at Mountain House Specific Plan III Draft EIR — Biological Resources 4.10-44 San Joaquin County