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WGUNZ <br /> Southwest, l[nc., <br /> rinsate was shipped off-site as hazardous to Riverbank Oil Transfer under uniform hazardous waste <br /> manifest number 22970589. The approximate 900 gallons of purged groundwater from the well <br /> development and sampling event (300 gallons of which was from three other neighboring Port of <br /> Stockton wells that were sampled at the same time)was shipped off-site as hazardous to Riverbank Oil <br /> Transfer under uniform hazardous waste manifest number 22970533. <br /> 11.0 SUMMARY <br /> Groundwater was encountered in the soil at the depths of 13 and 15 feet bgs. Static groundwater <br /> during the groundwater monitoring and sampling was found to range from 11.87 and 13.98 feet bgs. <br /> The highest NI-3-N concentrations in the soil samples were found to occur in the 10-foot samples. The <br /> highest soil pH values occurred in the 20-foot samples. NH3-N concentrations in the groundwater <br /> were found to be slightly above the laboratory MDL with the maximum concentration of 0.393 mg/l. <br /> The groundwater pH values were found to be approximately neutral,ranging from 6.9 to 7.2. <br /> Respectfully submitted, <br /> WGR Southwest,Inc. <br /> Sandra Goodman Marda T. Herbert <br /> Project Geologist California R G. #5322 <br /> Registered Geologist <br /> ED GEGt <br /> �YREF Oc <br /> /if� <br /> � 6 <br /> No. 5322 y R <br /> N� <br /> P <br /> lC OF CAl\FG � <br /> 725.PRI.00 Page 8 December 4, 2003 <br />