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• Following the placement of the sand pack, Mitchell Drilling developed the well by the surge and Purge method The well was surged for approximately 5 minutes using aware-line surge block � system Between surging cycles, approximately 5 gallons of groundwater were bailed from the ' well Following well development, three feet of hydrated bentonite chips were placed within the annular space between the borehole and the well casing A surface seal of neat cement grout was placed over the hydrated bentonite, under PHSIEHD observation The top of the well was secured with a water-tight locking cap and an 8-inch diameter, traffic-rated utility box ' During December 2001, Morrow Surveying (California Licensed Land Surveyor#5161) surveyed the newly-installed well into the existing monitoring well network Morrow Surveying located the well and measured the elevation of the top of the well casing to the nearest 0 01 foot, referenced 1 to the city of Stockton benchmark#113 (Elevation 19 51 feet) The surveyor's report is included as Appendix B ' 2 2 2 Soil Sampling and Analysis ' During drilling, soil samples were collected at five-foot intervals using a modified California split- spoon sampler lined with 2-inch diameter by 6-inch long stainless steel sleeves A Ramage Environmental field geologist logged each of the soil samples for geologic and hydrogeologic characteristics and screened each sample for organic vapors using a photoionization detector (PID) The monitoring well log is included as Appendix C To further evaluate the extent of impacted soil, the soil samples collected at 40, 45, and 55 feet ' bgs were submitted for laboratory analysis These soil samples were sealed with Teflon®film and plastic end caps, labeled, and transported in an iced cooler with chain-of-custody documentation ' to Kiff Analytical, LLC (Kiff), a state of California certified hazardous waste testing laboratory (Certification #2236) Kiff analyzed each of the soil samples for TPH-as-gasoline, BTEX, oxygenates (MTBE, DIPE, ETBE, TAME, TBA), and 1,2-dichloroethane (1,2-DCA) by EPA ' Method 82608 2 2 3 Groundwater Monitoring, Sampling and Analysis On December 6, 2001, Ramage Environmental monitored and sampled groundwater from the ' new well and the two existing wells Upon arrival at the site, each of the wellheads was inspected, unlocked and opened Depth-to-groundwater was measured in each of the wells using a water ' level indicator capable of measuring groundwater to within 0 01 foot A 0 33-foot thick layer of separate-phase hydrocarbons (i e , free product) was observed in MWA 8