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' First Quarter 2014(Semi-Annual)Groundwater Monitoring Report <br /> Pilkington North America,Inc. <br /> Lathrop,California <br /> Page 3 of 6 <br /> Table 2.Laboratory Analytical Results ebruary 25,2014 <br /> Constituent: TPH-D TPH-K TPH-MO <br /> ' Detection Limit: 0.05 mg/L 0.25 mg/L 0.50 mg/L <br /> Sample W <br /> MW-1 <0.05 <0.25 <0.50 <br /> MW-2 <0.05 <0.25 0.518 <br /> MW-3 <0.05 <0.25 < 0.50 <br /> SW-Sump <0.05 <0.25 1.32 <br /> ' SE-Sump < 0.05 <0.25 <0.50 <br /> Analvtical� Units: <br /> TPH-D=total petroleum hydrocarbons quantified as diesel mg/L=milligrams per liter,parts per million(ppm) <br /> ' TPH-K=total petroleum hydrocarbons quantified as kerosene All concentrations are reported in mg/L. <br /> TPH-MO=total petroleum hydrocarbons quantified as motor oil <br /> DIESEL SKIMMING OPERATIONS <br /> tDepth to groundwater, product thickness measurements, and product recovery data for the diesel <br /> skimming operations conducted during the current reporting period are summarized in Table 3, below. <br /> Approximately 1.19 gallons of product were recovered during the skimming and system O/M events. <br /> Product recovery from the Site's recovery wells has produced a cumulative total of approximately 241.64 <br /> gallons of diesel (Figure 4,Attachment A). Historic product thickness measurements and product removal <br /> data are presented in Table B, Attachment C. <br /> ' Table 3. Diesel Thickness Measurements and Product Recover <br /> Depth to Depth to Diesel Cumulative <br /> ' <br /> Date Recovery Operations and Maintenance <br /> Diesel Groundwater Thickness Diesel Removed <br /> Well ID feet feet feet allons Notes <br /> RW-1 11.72 0.14 <br /> ' <br /> RW-2 12.49 12.82 0.33 49.50 Initial drum volume was <br /> RW-3 12.16 12.32 0.16 68.59 approximately 2.1 gallons of <br /> 10/4/13 product.Ending drum volume <br /> RW 4 11.73 11.79 0.06 118.11 was approximately 2.2 gallons <br /> ' RW-5 11,75 of product. <br /> RW-6 12.26 4.27 <br /> RW-1 11.81 0.14 <br /> ' RW-2 12.41 12.98 0.57 49.55 Initial drum volume was <br /> RW-3 12.30 12.45 0.15 68.61 approximately 2.2 gallons of <br /> 10/14/13 product.Ending drum volume <br /> ' RW-4 11,87 11.96 0.09 118.11 was approximately 2.3 gallons <br /> RW-5 11,84 of product. <br /> RW-6 12.38 4.27 <br /> ' A <br /> i/1 CONDOR <br />