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Duplicates of the soil samples were placed in plastic bags. The duplicate soil samples were screened for the presence of benzene t utilizing a photoionization meter (TIP; PhotoVac TIP 1) and a portable organic vapor meter (OVM; United Technologies Bacharach Sniffer 503) . Ten soil samples from each boring with the highest benzene readings were selected for analysis. ' All sampling equipment was washed in a solution of tri-sodium- phosphate and rinsed between borings and before each sampling run. The hollow stem augers were steamed-cleaned between borings. The three ninety foot deep borings were converted into two-inch diameter monitoring wells the same day that they were drilled. The ' monitoring wells were constructed with the upper seventy feet consisting of blank SCH 40 PVC and the remainder of the wells consisted of machine perforated ( . 02011) SCH 40 PVC screen to total depth (Boring Logs) . Prior to placing the bentonite chip seal the wells were developed ' by passing a surge block through the screened interval for thirty minutes. The filter pack was then measured and additional sand was added to replace sand that settled during development. The top of the monitoring well casings were leveled relative to an existing monitoring well, MW1. On 25 May 1993, HKM Inc. purged and sampled the three existing and the three additional monitoring wells. HKM, Inc. obtained the water samples by bailer after three to four well bore volumes of water had been removed from the well and the ground water temperature, t conductivity and pH had stabilized (HKM - Field Notes) . The water samples were placed in teflon capped VOA vials preserved with HCL. The samples were then placed in a chilled container for transport ' to the laboratory. The samples were transported to Applied Consultants Santa Ana office, VIA Greyhound Bus Lines, for next day delivery to the laboratory. ITen soil samples from each boring were analyzed for total petroleum hydrocarbons (TPH) in accordance with the DHS method 8015-m. The soil sample with the highest TPH concentration from each boring was analyzed for purgeable aromatic hydrocarbons (BTE&X) in accordance with EPA Method 8020. The remaining soil samples were archived at the laboratory. Seven water samples, including a trip blank, were analyzed for total petroleum hydrocarbons (TPH) and purgeable aromatic hydrocarbons (BTE&X) in accordance with the DHS Method 8015-m and EPA Method 602 , respectively. U-HAUL 12701 N WILSON WAY M113-93-III/U-HAUL QM4 (SD5020 2) 14 JUNE 1993 4