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INTRODUCTION Mr. Ron Rieger is creating five parcels from an existing 60 acre (approximate)parcel which has been owned by the Rieger family since 1924. The attached Parcel Map produced by Owens Design Consultants illustrates the proposed Parcels indicated as Parcels 1, 2, 3 and 4 and the Remainder of 18.88 acres. According to the San Joaquin County Development Title, a Surface and Subsurface Contamination Report(SSCR)must be conducted at the time of Tentative Map submittal. The purpose of this report was to investigate the subject property for real or potential environmental contamination and report the findings to the Client and the San Joaquin County Environmental Health Department. This report complies with the San Joaquin County Ordinance, specifically 9-905.12(a) for a "Surface and Subsurface Contamination Report." In addition,the report addresses and evaluates non-point sources of hazardous materials, as well as potential point sources. Non-point sources of hazardous materials include agricultural chemical residues, high concentration of nitrate laden groundwater and other contaminants which may have originated from a wide area or volume. Point sources investigated include fuel storage tanks, septic systems and/or chemical storage areas. No chemical analysis was conducted for this investigation nor was there an inspection of the existing buildings for asbestos containing materials(ACMs). An analysis of the domestic well serving the house on proposed Parcel 1 must be tested for nitrates and the agrichemical dibromochloropropane (DBCP) in a Soil Suitability Study. This study will be required by the County Environmental Health Department if any of the proposed Parcels are developed. SITE DESCRIPTION As illustrated on the attached map,the subject property consists of a nearly square shaped, flat, 60 acre parcel. The site is bordered to the south by Grooms Road and pasture land,to the west by single family residences and farmland and to the north and east by additional farmland. It is currently zoned AG-40. The property, and the entire region,has been dry land and irrigated farmed for the last several decades. The subject property was last planted in rice. There was a small on-site dairy 45 years ago. Irrigation water is pumped from a private irrigation well, near the southeast center of the property. There is a single family residence, barn and other outbuildings in the south center of the property and four grain silos on the west side of the barn. An on-site domestic well and septic system serves the residence. Storm water drainage flows to the existing drainage ditch along the south property line. 1 ®F Quality e-trol Inspection