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site on September 13 , 1996 The location for this monitoring ' well, identified as MW-9 on PLATE IV, had been previously marked by personel from Wm J Hunter & Associates, and the immediate area cleared to allow access for the drilling equipment ' Drilling began at 0930 hours, surface sediments consisted of pieces of asphalt, brown to dark brown clay, & gravels, probably made land At a depth of 51 , a clean core barrel containing 3 , ' 21" x 6" metal tubes was lowered into the auger flights and driven from 5 " to 6 ' 6" using a drive hammer The core was retreived, laid on a clean surface, and carefully opened by the geologist ' One of the tubes was promptly sealed by covering the ends with teflon tape & plastic caps, and thoroughly sealing with duct tape The tube was clearly labeled and placed on ice in a sealed ' chest The remainder of the core was examined and the lithology and other features were entered on a field log There was a odor similar to "old" gasoline or sewage ' Additional cores were taken at 101 , 15 ' , and 20 " in the same manner The cores had a definite petroleum odor, and vi.sable discoloration The core barrel was thoroughly decontaminated with Alconox & clean water between each use After retrieving the last core from 201 -211611 , the augers were advanced to 35 " bgl preparatory to running casing. Refer to PLATE VIIID for details of blow counts, lithology and other pertinent data 21' OD, schedule 40 flush screw threaded casing was run 35 feet The bottom was fitted with a threaded solid cap, p, macc hine ' cut slotted screen ( 02011 ) extended from bottom to 15 feet, the top 10 feet was blank The annular space between the auger flights and the casing was filled with #2/12 SRI washed & screened sand, a weighted tape was used to check for sand height Auger flights were slowly withdrawn as needed while placing the sand When sand had reached 13 feet, (2 " above the top of the screen, ) 1/2 bag of bentonite chips was placed on top and wetted to insure a competent seal After withdrawing the remainder of the augers, the casing was cut off and a metal surface vault was installed The annular space from the bentonite seal to the surface was filled with a cement slurry which had been thoroughly mixed in a hopper and displaced with a flexible hose The top of the casing was fitted with a locking cap, and the vault sealed with a metal traffic cover PLATE IXD is a schematic of the well completion Drill solids and unused core material wer placed in metal drums and stored at 1145 W. Charter Way for temporary storage Preserved soil samples were transported under chain of custody to Sherwood Labs with instructions to analyze for BTEX (EPA 8020, ) 7