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t � 3 _ is IT C0RP0RATION 3.0 GROUND WATER MONITORING On May 30, 1985 all the wells reaching ground water on the site were surveyed and monitored. Additional monitoring was conducted on June 6, June 5 and June 20, 1985. Monitoring consisted of measuring depth to ground water and product thickness if product was present. A descrip- tion of the procedure is given in Attachment 2. Monitoring results are shown in Table 3.1. On May 30, 1985, 0.02 feet of free product, was measured in Well MW-8 which is substantially Tess than the amounts measured on June 6 and June 20, 1985. This would indicate that the subsurface conditions had not yet stabilized from the time the well was installed two days. earl ter. On June 5, 1985 free produc,, along with a rag-layer (emulsified layer of j product, dirt, and water) was observed in the water sample collected at the water table in Well MW-8. In an attempt to loca_e the Product/water interface, the rag layer was disturbed, preventing determination of the s interface. On June 6, 1985 a teflon bailer three feat long was used instead of the ane-foot-long bailer normally used for monitoring. With the longer bailer, 1.7 feet of free product was measured in Well MW-8. Monitoring conducted on June 20, 1985 encountered product in .Well MW-8 at a depth of 49.06 feet. The product extended to the bottom of the well at 53 feet. Therefore, a minimum of 3.94 feet of free product was present in the well. The technique used to "test the product/water interface was to apply a water reactive paste (McCabe water level indi- cator) to a measuring tape, then lower it into the well. When the tape is pulled back to the surface, a distinct color caange is shown on;the tape where the paste reacted with the water, indicating the product/ _-- water-interface --using th:s,-technique-, -there-was-no-indication-of water- in ater in the well. A bailer was then Towered to the bottom of the well and retrieved. Only product and no water was observed in the bailer. In Well M-9, a sheen accomp%.nied by a petroleum odor was recorded on this date during monitoring.