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Ank ! • Texaco Trading and Transportation Inc 5005 Business Park North suite 2C,. Bakersf!elo 1-4 = K 9 805 32? 7• September 18, 1996 Ms. Wendy Cohen California Regional Water Quality Control Board FEB - 3 1997 Central Valley Region 3443 Routier road, Suite A ENVIRONMENTAL HEALTH PERMIT/SERVICES Sacramento, CA 95827-3098 Subject: Renown Property, Beechnut Avenue and Tracy Boulevard Tracy, San Joaquin County Dear Ms. Cohen: As we discussed last week, Texaco Trading and Transportation Inc. would like to "activate" this site so that the Regional Board can open a cost recovery account and conduct a review. For your information, in 1994, Texaco and Southern Pacific purchased the eastern parcel of the Renown site, as shown in the enclosed "Site Location Map". For this account, you required data of the contamination levels. With regards to previous work done on the site, the most recent report summarizes the bulk of the sample analysis. This report is the Dames and Moore "Revised Draft, Preliminary Endangerment Assessment, Renown Enterprises Property" dated June 1, 1990. Enclosed are Tables 1 through 10 of that report which detail the analysis, along with a map indicating borehole and well locations. Tables 1 and 2 contain data from samples taken prior to Dames and Moore's involvement with the site in 1988. According to Dames and Moore in their August 3, 1988 "Work Plan, Soil and Ground Water Contamination Assessment", the property had been extensively graded necessitating reassessment. With regard to organic content, the analyses indicates soil samples contained Oil and Grease (O&G), Total Petroleum Hydrocarbons (TPH), Benzene and Polynuclear Aromatic Compounds (PNAs). The groundwater samples were found to contain TPH and some PNAs, however, no Volatile Organic Compounds (VOCs) including BTEX were detected. The O&G and TPH values vary since, as you know, O&G is a gravimetric method which is not specific to petroleum hydrocarbons. Tables 4A through 6 contain organic analysis of Dames and Moore soil samples. These samples 'Vere found to contain O&G, TPH and some PNAs. From a previous Dames and Moore report "Phase I - Soils Investigation, Soil and Ground Water contamination Assessment", no VOCs were detected in the soil (Table 3 of that report). Tables 8 and 9B contain groundwater analyses. O&G, TPH and PNAs were present, however, no VOCs were detected.