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• <br /> STATE OF CALIFORNIA--HEALTH AND WELFARE AGENCY GEORGE DEUKMEJIAN, Gowwrroor <br /> DEPARTMENT OF HEALTH SERVICES <br /> TOXIC SUBSTANCES CONTROL PROGRAM <br /> REGION 1 <br /> 10151 CROYDON WAY <br /> SACRAMENTO,CA 95827-2106 December 28, 1990 <br /> (916)855-7700 <br /> Mr. Jackson Chih <br /> 4 <br /> 11-5 d' ; <br /> 4145 Blackhawk Plaza circle, suite 101DEC 3 Ar <br /> I'r)r) <br /> Danville, CA 94506 K-kJ6 <br /> r <br /> Dear Mr. Chih: SIV,;C <br /> PRELIMINARY ENDANGERMENT ASSESSMENT FOR THE RENOWN ENTERPRISES <br /> PROPERTY; TRACY BOULEVARD AND BEECHNUT AVENUE, TRACY, CALIFORNIA <br /> The Department of Health Services, Toxic Substances Control <br /> Program (Department) has completed its review of the Preliminary <br /> Endangerment Assessment (PEA) Report for the subject property. <br /> In general, the Department concurs with the recommendations <br /> presented in the PEA. Most notably, the Department agrees the <br /> following actions should be taken to protect public health and <br /> the environment. <br /> 1. Implement measures to prevent fugitive dust emissions. <br /> 2 . Backfill the excavated areas in the Eastern Parcel using <br /> soil stockpiled onsite. This action is appropriate so long <br /> as a grading plan is developed to ensure that oily soils are <br /> not inappropriately moved offsite or to areas where oily <br /> soils were not previously encountered. <br /> 3 . Remove all oil stained soils from areas proposed for human <br /> habitation and cover the area with clean fill . This applies <br /> as well to oil-stained soil encountered during excavation, <br /> grading or construction. <br /> 4 . Manage soils removed from the site according to Regional <br /> Water Quality Control Board (RWQCB) requirements. <br /> 5 . Develop and implement a health and safety plan for workers <br /> who have a potential to come in contact with contaminated <br /> soils. <br /> 6 . Develop and implement a plan for informing neighboring <br /> residents and future residents of onsite conditions with <br /> reference to the result of the PEA. <br /> 7 . Evaluate the potential variability of ground water quality <br /> by monitoring the wells on a quarterly basis for a minimum <br /> of one year. <br />