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Ms Lori Duncan • March 16,2001 <br /> San Joaquin County <br /> Page 2 <br /> other obstructions on adjacent properties All borings will extend to the safe limits of the <br /> limited access drill rig or ten feet into a competent clay or aquitard If the lateral and <br /> vertical extent of the soil and groundwater impact remains undefined with the use of <br /> limited access equipment, an addendum to the work plan describing the additional areas <br /> to be investigated and the methods proposed to gain access and conduct the investigation <br /> will be submitted <br /> Soil and water samples collected in the saturated zone below the water table will be <br /> collected water sample first followed by a driven soil sample for each five foot interval <br /> Water samples for laboratory analysis will be collected every five feet below the capillary <br /> fringe Soil samples will be collected in the saturated zone for laboratory analysis in the <br /> additional test boring proposed in the vicinity of boring BI All soil and water samples <br /> collected for laboratory analysis will be analyzed for petroleum hydrocarbons by EPA <br /> Method 8015m, volatile aromatic hydrocarbons (benzene, toluene, ethyl benzene, and <br /> xylenes) by EPA Method 8020 (8021B), and fuel additives and oxygenates including 1,2 <br /> dichlorethane, ethylene dibromide, ethanol, and methanol by EPA Method 8260 <br /> Please call me at (209) 577 - 8186 if you have any questions about this submission or the <br /> Ripona Market investigation <br /> Sincerely, <br /> "YZ----F <br /> Michael J Kloberdanz, REA, RENS <br /> M J. Kloberdanz & Associates <br /> Attachment <br /> wp3aaam <br />