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MW-1 R and MW-2R were dry for this monitoring event. All samples were extracted using the tube with check valve pump system. MW-1, MW-2, MW-5, MW-6, MW-7S, MW-8S, MW-8D, and MW-9 were purged at+1- .5 g.p.m. MW-3 was purged at .3 gpm. MW-3R did not get a full purge and was a grab sample. EW-1 was purged at 1 GPM. The physical properties of the groundwater can be found in the Del-Tech Field Report, which is attached and part of this report. MW-1R and MW-2R were dry for this monitoring event. The remaining monitoring wells were sampled for analysis. The original monitoring wells(MW-1,MW-2,MW-3)were used to establish the groundwater elevation and hydraulic gradient. All samples were transported under chain of custody to Sherwood Labs of Hilmar, California for analysis by EPA method SW8020F. Samples were transported under chain of custody from Sherwood to Castle Analytical Labs for analysis by EPA Method 8260FA for oxygenates including 1,2-DCA and EDB. All water sample analysis and groundwater elevations are summarized in the attached tabular recap sheet. Copies of the original laboratory data sheets from this sampling event are also attached and are a part of this report. Findings The groundwater elevation at time of monitoring was about 2' lower than the last monitoring event. MW-2 now has the highest concentration of the monitoring wells with gasoline contamination of TPHg at 128,000 ppb, which is higher by 36,500 ppb from the last sampling event. EW-1 had a concentration of TPHg of 168,000, which is 6,000 ppb lower from the last sampling event. The groundwater hydraulic gradient was calculated at S=0.0055 with the down slope in the South/Easterly direction, which appears to be typical for drought conditions. The gradient is determined by the first ground water elevation data of MW-1, MW-2, and MW-3 (see a site map attached). Analysis for oxygenates during this event indicates the presence of MTBE, 1,2 DCA, and EDB in moderate amounts in MW-1,MW-2,MW-3,MW-3R,MW-5,MW-7S,MW-8S,MW-81)and EW- 1. EW-1 had the highest concentration of MTBE (1,500ppb), 1,2 DCA (690ppb), and EDB (380ppb). (see attached recap sheets). Conclusions The long term monitoring history indicates that natural attenuation is reducing the concentrations by about 10% per year. The quarterly fluctuations in concentration are driven by the eye of the plume oscillating with changes in the groundwater levels. 4