SITE INFORMATION AND CORRESPONDENCE FILE 1

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During the first three months of operation, the telemetry unit called the onsite maintenance personnel for problems relating to low seal water and base power outage (telemetry Unit operating on back up battery). This coupled with the training has insured continuous operation. Performance The system became operational on October 4, 1995 and was turned over to the user on October I 1, 1995. A process monitoring program (PMP) was initiated to monitor the system performance. A PMP form was kept at the treatment center and utilized to track system run times, flowrates and concentrations. Initial vapor concentrations were much higher than anticipated during the design phase. System vapor measurements indicated a LEL of over 350%. A LEL of 100% for JP-4 is equivalent to 13,000 ppm (Baker, 1984). Therefore the initial concentration going into the system was over 45,500 ppm. Our 400 Ibs of carbon was saturated in about 2 hrs. Calculations base on this level of concentration indicated that a different method of off-gas treatment would have to be utilize. After 1454 hours of operation, the authors went back out to the site and measured the LEL at 225% (29,250 ppm). During the investigation and well installation phase of the project, much lower levels of LNAPL were discovered than anticipated in the original design. Due to power considerations and the very high vapor concentrations, the authors balanced the system to operate primarily in biovent mode. As of 1116196 only 1,465 gallons of wastewater and 5 gallons of product was recovered and processed by the system. Table 3. summarizes cleanup to date. Table 3. Remediation to Date Date Run Vapor Vapor Phase Water Est. Dissolved Free Total Time Phase JP-4 Equiv. Flow JP4 removed Product JP4 (hrs) (lbs) (gal) (gal) to date (gal) (gal) 1014195 598 10593.5 1694.96 1060 .21 .05 1695.22 to 11/6/95 1117195 1216 20401 3264.16 405 .08 5 3269.24 to 1116196 IF-Cum � 1814 130994.5 I 4959.12 1465 .29 I 5.05 4964.46 388