ARCHIVED REPORTS FIRST QUARTER GROUNDWATER MONITORING REPORT FEBRUARY 2014

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' Condor Earth Technologies, Inc. ' 21663 Brian Lane,Sonora CA 95370 (209)532-0361 188 Frank West Circle Suite I,Stockton CA 95206(209)234-0518 tApril 17,2014 . Condor Project No. 1838F ' FIRST QUARTER(SEMI-ANNUAL) GROUNDWATER MONITORING REPORT FEBRUARY 2014 ' Site Address: Pilkington North America, Inc. (Site) 500 East Louise Avenue Lathrop,California ' Client: Xiaosong Wang Pilkington North America, Inc. ' 500 East Louise Avenue Lathrop, California ' Primary Agency: Gerald Djuth, California Regional Water Quality Control Board (CRWQCB) Ann Palmer, CRWQCB Copy to: Adrienne Ellsaesser, San Joaquin County Environmental Health Department (SJCEHD) During the first quarter of 2014, Condor Earth Technologies, Inc. (Condor) conducted a semi-annual ' groundwater monitoring event and remediation activities consisting of diesel skimming operations at the above-referenced Site (Figure 1, Attachment A). This report contains a summary of the diesel product removal data and results of the first quarter 2014 groundwater monitoring event conducted in February ' 2014. Report attachments include figures indicating the Site location and groundwater gradient, diesel isopach maps, and cumulative gallons of diesel removed from the Site recovery wells (Attachment A); Site background information (Attachment B); historic monitoring and diesel product removal data ' (Attachment C); field forms(Attachment D); and current laboratory analytical results (Attachment E). First Ouarter Groundwater Monitoring Event Summary(February 24 and 25,2014) ' On February 24 and 25, 2014, a Condor representative measured the depth to groundwater, recorded field observations, and collected groundwater samples from the three monitoring wells(MW-I through MW-3) and collected groundwater samples from two of the four facility sumps (SE-sump and SW-sump) (Figure 2, Attachment A). The average groundwater elevation in the three Site monitoring wells on February 24, 2014, was 2.31 feet, a decrease of 0.98 feet since previously measured on August 12, 2013. The calculated groundwater gradient was approximately 0.002 feet per foot(ft/ft)to the east-northeast. 1 Total petroleum hydrocarbons quantified as diesel (TPH-D) and kerosene (TPH-K) were not detected at or above the laboratory reported detection limits in the three monitoring wells or two facility sumps. ' Laboratory analytical results indicate that total petroleum hydrocarbons quantified as motor oil (TPH-MO)was detected in monitoring well MW-2 and the SW-sump. ' is CONDOR