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GETTLER- January 12, 2010 Mr. Harold Speelman Speelman Excavation 1648 Fairway Oaks Court Ripon, CA 95336 9 RYAN INC. JAN 1 9 2010 ENVIRONMENT HEALTH PERMIT/SERVICES Subject: Underground Storage Tank Removal Sampling Report, Madsen's Sunrise Dairy, 239 S. Stockton Avenue, Ripon, California Mr. Speelman: This report presents the results of sampling activities performed by Gettler-Ryan Inc. (GR) at the request of Speelman Excavation (Speelman) during removal of one 12,000 -gallon underground storage tank (UST) at the above referenced site. This work was performed in accordance with San Joaquin County Environmental Health Department (SJCEHD) guidelines and a department representative, Mr. Muniappa Naidu, was present on the day samples were collected. The subject site is located at 237 S. Stockton Avenue, Ripon, California and pertinent site features related to this work are shown on Figure 1. Field Activities On November 12, 2009, GR observed the removal of one 12,000 -gallon UST by Speelman at the above referenced site. No observable holes were noted in the UST. Following UST removal, GR collected soil samples TW -13 and TE -13 at a depth of approximately 13 feet below ground surface (bgs) from the beneath each end of the former UST. GR also collected soil sample TM -13 from beneath the tank mid point at a depth of 13 feet bgs. Water was not encountered in the UST excavation. In addition, GR collected 4 -point composite samples SP1-A,B,C,D and SP2-A,B,C,D from approximately 100 cubic yards of excavated pea gravel stockpiled onsite. Soil samples from the UST excavation were collected manually from the backhoe bucket by filling a pre -cleaned, six-inch brass sleeve. All sample locations were selected by Mr. Muniappa Naidu. Field work was performed in accordance with GR Field Methods and Procedures which are attached. Soil sample locations are shown on Figure 1. Chemical Analvtical Procedures Soil samples TW -13, TM -13, and TE -13 were analyzed for Total Petroleum Hydrocarbons as diesel (TPHd) by EPA Method modified 8015, for Total Petroleum Hydrocarbons as gasoline (TPHg), benzene, toluene, ethylbenzene, and total xylenes (BTEX), Methyl tert-Butyl Ether (MtBE), Ethyl tert-Butyl Ether (ETBE), Di -Isopropyl Ether (DIPE), Tert-Amyl Methyl Ether (TAME), and Tert-Butanol (TBA), 1,2- Dichloroethane (1,2 -DCA), and Ethylene Dibromide (EDB) by EPA Method 826013. 6747 Sierra Court, Suite J • Dublin, CA 94568 • (925) 551-7555 • Fax (925) 551-7888 3140 Gold Camp Drive, Suite 170 • Rancho Cordova, CA 95670 • (916) 631-1300 • Fax (916) 631-1317 1364 N. McDowell Blvd., Suite B2 • Petaluma, CA 94954 • (707) 789-3255 • Fax (707) 789-3218