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After treatment,the.water will be pumped to a 5,000_gallon-storage tank for storage prior to disposal. Two such tanks are currently on site,and both will be filled and disposed of during each treatment:cycle,yielding 1.0,000 gallons of treatment capacity. If the treatment system proves successful,a third 5,000-.gallon tank may be mobilized at a latter date to increase capacity. 4.0 SYSTEM OPERATION During the 2009 pilot test,the pumping rate varied from 1 to 1.25 gallons per:minute (gpm). This low rate was.necessary to keep the pump from overheating or the well from going dry. It is anticipated;that a higher rate,perhaps 3 to 8 gm,pcan be.used during full remediation because of the.larger diameter well. At this higher rate,the.tanks will fill in less than 3 days. Automatic shutoff sensors on the tanks will turn off the pumps when.the tanks are full and ready for sampling. The.Municipal Utilities.Department(Mt.)D)denied the use of continuous discharge of the treated effluent to the city sewer because of the presence of the chlorinated hydrocarbons trichloroethane and perchloroethane(TCE and.PCE)in.the influent stream_ Instead,only batch discharge will be allowed, and an analytical sample from each batch will be required to demonstrate that the effluent does not contain these compounds. Therefore, an effluent sample will be collected.from the holding tanks each time they fill. As required by the Municipal Utilities Department,the sample will be analyzed for TPHg, i BTEX,MTBE,TCE&PCE by EPA method 8260A and Oil&Grease by EPA method 1664A. The laboratory results will be available approximately one week.after sampling. During that time,the system will remain shut down. If the results indicate that-the treated water is within Municipal Utilities_Department standards,the batch of treated water will be discharged to the sewer system at an approved rate of less than 1.0 GPM,as stipulated by the MUD. However,if TCE or PCE are.detected by the'laboratoryin the treated water; it i will be necessary to recycle the treated water back through the carbon vessels and re- sample it before it can be disposed of. This occurred several times during the 2009 pumping test,which.caused the delays that forced the test to be extended for several months. t 5.0 REPORTING The Municipal.Utilities Department requires monthly reporting of discharge totals and laboratory results(it does not require that the-results from each treatment batch be reported before discharge). The department also requires semi-annual reporting of Total Lead using EPA method 601 OB and Total Toxic Volatile Organics-40 CFR 43.3 using EPA method 624 or 625. These results will also be included and discussed in quarterly monitoring reports,unless S;CEHD requests semi-annual monitoring.