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water has since risen to static levels between 36 and 37 feet below the ground surface. The soil borings were terminated in a competent clay layer. The borings were completed as monitoring wells by installing nominal 4 inch PVC casing. Screened casing with 0.020 inch slots were placed to depths that provide for adequate representation of the aquifer and provide more than 10 feet of screen above the present static water level. The screened intervals were sand packed with Lonestar#2/12 sand from one foot below the casing to a depth more than 2 feet above the top of the screen to provide an effective filter pack and prevent the bentonite and grout seal from occluding the screen. A neat cement grout seal was pumped into the remaining annular space above a bentonite seal with the drill rig's mud pump and a 25 foot long hose. The well tops were completed with water-tight traffic boxes set in concrete; the traffic boxes require a special wrench to be opened. The wells are further secured with locking well caps and padlocks. Soils were sampled at five foot intervals with a modified California split spoon sampler lined with 2 inch brass liners. The sampler and brass liners were scrubbed with detergent and rinsed with tap and deionized water before use at each sampling interval. One of three soil-filled brass liners was immediately protected with aluminum foil and capped with plastic end caps; the plastic end caps were sealed to the brass liners with plastic tape. The sealed sample was labelled and placed on ice for storage and transportation to the analytical lab. The remaining soil-filled brass liners were emptied of their contents and scanned with an Organic Vapor Meter(OVM), a photo-ionization detector. After being scanned with the OVM, the soil was described on drill logs according to the Unified Classification System by the supervising geologist. All the collected soil samples were submitted under chain-of- custody to Pace Laboratories in Novato, California. Pace is certified by the Department of Health Services Hazardous Materials to perform hazardous and toxic waste analysis for metals and inorganic and organic parameters under certificate number 148. Selected soil samples were analyzed for total petroleum hydrocarbons with benzene, toluene, ethylbenzene, and xylenes (BTE&X)according to EPA method 8015. The results of these analyses are summarized in Table 1. The wells were developed on 15 November 1988 by purging with a clean PVC bailer. After development, the wells were sampled with a clean teflon bailer. Samples of ground water from each well were poured into two 40 ml VOA vials that were capped with teflon seals. The samples were placed on ice for storage and transportation. The samples were shipped to Pace Laboratories for analysis by EPA method 8015 for total petroleum hydrocarbons and BTE&X. The results of these analyses are included as Table 2. 2