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i same manner as detailed for monitoring well #2 Used core material and drill cuttings were placed in steel barrels for later disposition. Details of cored intervals, blow counts, lithology & other pertinent data is given on PLATE XI The same field procedures used for MW-2 were followed; a portion of each core was placed in a sealed plastic bag & set aside for 10-15 minutes to allow any light components to volati.ze . The first petroleum odors and PID readings were noted from the cored interval 241 - 2516" ; all cores below that depth had a petroleum odor and gave positive PID readings A portion of each core was sealed and preserved as described above The core barrels & metal tubes were thoroughly washed with Alconox & rinsed with clean water prior to each use to prevent the possibility of cross-contamination. Water was located at 53 ' below grade by use of a weighted tape The last core was taken from 541 -5516" , it consisted of reddish- brown silty clay, slightly moist, with a petroleum odor The PID meter gave a reading of 843 ppm. The augers were advanced to 63 , below grade, and blank & slotted • 2" Sch 40 PVC casing was placed in the augers & landed at 63 ' The annular space from bottom to 401 , (3 feet above the top of the screen, ) was packed with 7 1/2 sacks of #2 1/2 & #3 washed sand as described for MW-2 One bucket of bentonite pellets was poured on top of the sand & wetted with water After verifying the top of the bentonite seal at 38 , bgl, the remaining flights were removed from the hole The annular space between the casing and hole was filled with a cement slurry mixed at the surface and displaced by use of a tremie pipe . PLATE XIV is a schematic of the well completion Monitoring well #2 was grouted from the bentonite seal to the surface in the same manner Precast Christie-type vaults were thoroughly cemented in place with sack readymix cement, and the 211 casing was cut off about 6" above the bottom of the vault Traffic covers were installed on each well & labeled. A representative from the San Joaquin County EHD was present during most of the operation, and witnessed the grouting of the wells During this time, the geologist, Charles Fry, transported the preserved soil samples under chain of custody to FGL Labora- tory in Stockton with instructions to test for BTEX, (EPA 8020, ) & TPH as gasoline, (EPA 8015M ) After delivering the samples, Mr. Fry returned to the site to witness the completion of the grouting operation After ensuring that the well boxes and . traffic covers were properly installed, the drums containing 7