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Tj KMNFELDER <br />(MW -1). Groundwater flow was found to be to the southwest with a gradient of 0.010 ft/ft. For <br />a summary of elevation data see Table 1. A groundwater flow direction and contour map is <br />depicted on Plates 4 and 5. <br />4.5 COLLECTION OF GROUNDWATER SAMPLES <br />A total of four groundwater samples were collected on October 29, 2003. The groundwater <br />samples were collected from monitoring wells MW -1 through MW -4. The wells were purged <br />and sampled using disposable bailers as generally described in Appendix B, A transparent <br />disposable bailer was partially submerged into the groundwater prior to purging each monitoring <br />well to assess the groundwater for a potential sheen and/or floating product. No sheen or floating <br />product was observed in the water from the four monitoring wells, nor were any unusual odors <br />noted. Copies of the monitoring well sampling logs are included in Appendix C. <br />Purge water from the monitoring wells was stored on site in labeled 55 -gallon drums pending <br />chemical analysis and disposal by the client. <br />The four groundwater samples were submitted for the following analyses: <br />• Total Purgeable Petroleum Hydrocarbons as referenced to Gasoline [TPH-G] by <br />EPA Method 8015M; <br />• Five Oxygenates (ETBE, DIPE, MTBE, TAME and TBA), by EPA 8260; <br />• Total Extractable Petroleum Hydrocarbons as referenced to Diesel and Motor Oil <br />[TPH-D/MO] by EPA Method 8015M/3015. <br />The groundwater samples collected from perimeter monitoring wells MW -1, MW -3 and MW -4 <br />were also submitted for the following analyses: <br />• Volatile Organics by EPA Method 5260; <br />4.6 HAND AUGER SAMPLING <br />Shallow soil sampling was conducted using a hand auger and hand sampling device in multiple <br />areas including a wash down area, chemical storage area, retention basin (pond) areas and from <br />an approximately 75 yard soil stockpile. <br />Each of the soil borings were advanced in these areas using a stainless steel hand auger. Soil <br />samples were obtained by slide hammering a 2 -inch diameter by 6 -inch long stainless steel tube <br />into the soil at the desired sampling depths. The stainless steel tube was then removed from the <br />boring and sealed with Teflon° sheeting and tight -fitting plastic end caps. The samples were <br />immediately stored in an iced cooler. The samples were transported under chain - of custody <br />36274 / ST03RI919 Page 8 of 19 <br />2004 Kleinfelder, Inc. January 5, 2004 <br />