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San Joaquin Valley Air Pollution Control District PERMIT UNIT: N-8773-1-0 EXPIRATION DATE: 08/31/2018 EQUIPMENT DESCRIPTION: SOIL AND GROUND WATER REMEDIATION OPERATION SERVED BY A 0.5 MMBTU/HR MAKO INDUSTRIES MODEL 350 TCAT NATURAL GAS-FIRED THERMAL/CATALYTIC OXIDIZER PERMIT UNIT REQUIREMENTS 1. No air contaminant shall be released into the atmosphere which causes a public nuisance. [District Rule 4102] 2. Particulate matter emissions shall not exceed 0.1 grains/dscf in concentration. [District Rule 4201] 3. No air contaminant shall be discharged into the atmosphere for a period or periods aggregating more than three minutes in any one hour which is as dark as,or darker than, Ringelmann 1 or 20% opacity. [District Rule 4101] 4. The soil and ground water remediation system shall be maintained in proper operating condition at all times. [District Rule 2201] 5. Only natural gas shall be used as auxiliary fuel for the combustion of VOC. [District Rule 2201] 6. Either the VOC control efficiency shall not be less than 95%,or the total VOC emission rate shall not exceed 2.0 pounds in any one day. [District Rule 2201] 7. The total VOC emissions from the soil and ground water remediation system served by the thermal oxidizer or by the catalytic oxidizer shall not exceed 36.2 pounds in any one day. [District Rule 2201] 8. The emissions from the soil and ground water remediation system shall not exceed any of the following limits: 0.1 lb- NOx/NIMBtu, 0.084 lb-CO/MMBtu, 0.0076 lb-PM10/MMBtu, 0.0055 lb-VOC/MMBtu and 0.00285 Ib-SOx/MMBtu. [District Rule 22011 9. The minimum operating temperature for the combustion chamber of the thermal oxidizer shall be maintained at or above 1400 degrees F. [District Rule 2201] 10. The minimum operating temperature for the combustion chamber of the catalytic oxidizer shall be maintained at or above 600 degrees F. [District Rule 2201] 11. The thermal/catalytic oxidizer shall be equipped with an operational temperature gauge to indicate the temperature of the combustion chamber. A continuously recording device shall be utilized to indicate the combustion chamber temperature during operation. [District Rule 2201] 12. The soil remediation system shall not be operated unless the combustion chamber is at or above minimum operating temperature. The system shall automatically terminate operation if the temperature drops below the minimum operating temperature. [District Rule 2201] 13. Sampling ports adequate for extraction of grab samples,measurement of gas flow rate, and use of an FID, PID, or other District-approved VOC detection device shall be provided for both the influent and the effluent gas streams. [District Rule 1081] 14. Sampling to demonstrate ongoing compliance shall be performed at least once per month. [District Rule 1081] 15. Records of the cumulative running time and the measured influent and effluent VOC concentrations shall be maintained. [District Rule 2201] PERMIT UNIT REQUIREMENTS CONTINUE ON NEXT PAGE These terms and conditions are part of the Facility-wide Permit to Operate. Facility Name: ADVANCED GEOENVIRONMENTAL INC Location: 248 E PARK ST,STOCKTON,CA 95205 N4773-1-0 SeP 1320132.13PM—CH K