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FS _ °. itq <br /> An <br />/ '�'V 7 !'r.� S ter'''.°-%4y;¢ ," . tr q�y�: ....�" JI �r ,I,. �- ;�-. t�.r• dr...:M � w. <br /> T' <br /> r <br /> REGAL 603 8/16/91 <br /> Before water "purging" or sampling commenced, a ground water <br /> interface probe (resistivity meter) was lowered into eas <br /> chwell any <br /> depth to water measurements were recorded. Next, <br /> P <br /> wered into the water to determine <br /> if <br /> designed bailer was loproduct was <br /> gasoline product was floating on the water' if <br /> measured and ground waterthe weight of <br /> -liserved, product thickness was <br /> elevations were recalculated to compensate for <br /> gasoline. Monitor wells that contained gasoline <br /> roductrowast were observedI. <br /> "purged" until depletion of the floating P this method <br /> Approximately a quart of gasoline was recovered by <br /> from Mw1 on 11/27/90. The recovered product is presently being <br /> stored with the ground water produced from "purging" the monitor <br /> wells for sampling, on site in a 55 gallon hazardous material <br /> drum. <br /> In order to "purge" each well, a dedicated disposable PVC 1 1/2" x <br /> 3' bailer was repeatedly lasered down the well and was measured forothe everywthird <br /> Temperature, pH, and conductivity <br /> bailer volume removed. Bailing proceeded for each wellntil e , <br /> B. tel and temperature parameters stabilized ediyoximax x The <br /> 5 gallons) and then the sample was taken, see Appendix <br /> "Conned" ", onrsite, withintthebtencedttreatment compound. gallon <br /> ConVault , <br /> A representative water sample was obtained from the monitor wells <br /> usir_g the dedicated disposable PVC bailer used during purging of <br /> water samples collected were stored in four-40 <br /> the well. The <br /> milliliter cVOAoolervwith iceTande heswinetheaclientsmples ebehaifCed"chain of <br /> insulated <br /> custody hand delivered" to Chemtech Analytical Laboratories (AH <br /> certified #359) for chemical analyses. <br /> 3.0 RESULTS <br /> 3.1 PRODUCT AND RECOVERY <br /> t and during subsequent site <br /> During the initial site assessmen <br /> visits, floating product was observed in monitor wells MW-1 and <br /> 1.261 <br /> YtW--3. Product thickness in MW-1 has ranged fromasolinetis amber <br /> and from 0.6' to 1.661 in MW-3. The .recovered g degradation) . <br /> yellow and appears to be fresh (no app <br /> Involved regulatoraquifer cies suggested be that <br /> amedproduct recovery <br /> commence b <br /> Temporary submersible pneumatic pumps were installed into98m�onittor <br /> wells MW-1 and MW-3 for product recovery on October 10, 19sar for <br /> "plumbing" {pump lines, electrical lines, etc. , ) Y <br /> are contained in underground schedule 40 PVC <br /> operating the pumps <br /> PAGE 5 <br />