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:TATE OF CALIFORNIA—THE RESOURCES AGENCY PETE WILSON, Goe , DEPARTMENT OF FISH AND GAME REGION Z ay 1701 NIMBUS ROAD, SUITE A D � �(-D RANCHO CORDOVA, CALIFORNIA 93670 J a (916) 355-7020 November 4, 1993 NOV 8 1993 Mr. Richard Larrouy COMMUNITY DEVLLUF M[IV I DEPT.San Joaquin County PLANNING DIVISION Community Development Department 1810 East Hazelton Avenue Stockton, California 95205 Dear Mr. Larrouy: The Department of Fish and Game (DFG) has reviewed the proposed Site Approval Application for Crossroads Ventures (SA- 93-42 ) . The project consists of a plan to construct five waste water disposal percolation ponds. The project is located at the west end of Madruga Road, south of the City of Lathrop, in San Joaquin County and is bounded by the San Joaquin River on the west, Highway 120 on the north, and orchards on the east and south. Wildlife habitat conditions consist of a 62-acre agricultural field adjacent to the San Joaquin River. There is one mature valley oak (Quercus lobata) and one cottonwood (Populus fremontia) on the project site. California Natural Diversity Data Base files contain records for the State-listed threatened Swainson' s hawk (Buteo swainsoni ) and the State-listed endangered Delta button celery (Ernygium racemosum) near the project site. Riparian habitat adjacent to agricultural fields provide one the most valuable nesting and foraging habitats for the Swainson' s hawk in San Joaquin County and throughout the Central Valley . Due to the project site' s close proximity to the San Joaquin River and recorded Swainson' s hawk nest sites, we recommend that: 1 . The applicant be required to provide mitigation for any loss of Swainson' s hawk foraging habitat. Mitigation should be based on the DFG' s Draft Mitigation Guidelines for Swainson' s Hawks (Buteo swainsoni) in the Central Valley of California. 2. The applicant should conduct a survey for the presence of special status plants, particularly Eryngium racemosum. The DFG recommends that surveys be conducted at the time of year when threatened or endangered species are both evident and identifiable. Surveys should be scheduled to coincide with peak flowering periods and/or periods of phenological development that are necessary to identify a plant species of concern. If special status plants are