SITE INFORMATION AND CORRESPONDENCE FILE 1

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SENT BY - EMCON ASSOCIATES 9- 7-94 17 ; 02 EMCON SACRAKNTOH 12094640138 ; # 31 5 COMMONS FOR N-3218- 1-0 page; 2 7 . At the time of initial inspection, measurements shall be taken to determine the flow ratesa influent and effluent 8. Compliance with VOC control efficiency shall be demonstrated by results of laboratory samples prior to commencing system operations. 9, The influent & effluent VOC cone, of the control device sli ill be measured at least one per month for the catalytic oxidation system & at least once per week for the carbon system, using an F13 ,PID or other District approved VOC detection device. M A log of the weekly running time and the measured influent and effluent VOC concentrations shall be maintained_ 11 . The logs shall be maintained for at least two years and made available for District inspection upon request. 12. Operation of the soil remediation system shall not exceed three years without prior District approval. 13 . The catalytic oxidizer combustion chamber temperature shall be maintained at, or above 600 degrees F. 14. Total VOC emissions from the catalytic oxidizer shall not exceed 40. 1 pounds in any one day. 19. No auxiliary fuel shall be used for the burning of gasoline vapors in the catalytic oxidizer, 16. The catalytic oxidizer shall be equipped with an operational temp, gauge to indicate the temperature of die combustion chamber_ A continuously recording device shall be utilized to indicate the combustion chamber hemp, during operation_ IT The soil remediation system shall not be operated unless the catalytic oxidizer is operating at or above the proper operating temp. An automatic shut off system shall ire utilized when the operating temp. drops below the proper operating temperature. 18. The Air Pollution Control Inspector shalt be notified in writing when the catalytic oxidizer will be modified to operate in the carbon system mode prior to the modification, 19. The carbon canister control system shall include a minimum of two carbon canisters connected in series. W. The carbon canisters removed from the system shall be sealed vapor tight. ! 1 , The effluent VOC Concentration shall not exceed 20 ppmv when utilizing the activated carbon system as the control device. 12. Neither thesoil ventilation rate nor (lie control device eluent flow shall exceed 400 cfm at any time when utilizing the activated carbon system as the control device. 13 . lAboratory samples shall be taken at locations both upstream and dowmstreant of the carbon control system and between the carbon canisters at the time of the initial use of the carbon system.