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� r <br />STATE OF CALIFORNIA GEORGE DEUKMEJIAN, Governor <br />CALIFORNIA REGIONAL WATER QUALITY CONTROL BOARD - <br />CENTRAL VALLEY REGION '•-� <br />3201 S STREET <br />SACRAMENTO, CALIFORNIA 95816-7090 <br />PHONE: (916) 445-0270 <br />30 April 1986 <br />Mr. Dan DeAngelis <br />Stockton Metropolitan Airport <br />5000 S. Airport Way, Room 202 <br />Stockton, CA 95306 <br />REVIEW OF LABORATORY REPORTS <br />ll� <br />MAY 2 <br />ENVIROMENTAL HEALTH <br />F ERMIT/SERVICES <br />I have reviewed the analytical results for the Stockton Airport wash water <br />evaporation pond samples that were collected and analyzed by California Water <br />Laboratories, Inc. The reports state that samples were collected from the <br />bottom of the polyethylene lined pond and analyzed by EPA Methods 625, 8320, and <br />8140 for organochlorine, carbamate, and, organophosphate compounds respective- <br />ly. Volatile organics were not analyzed for because no degreasers or solvents <br />were reported to be used on-site. No pesticides were found above detection <br />limits. Based on these results, the evaporation pond does not contain hazardous <br />or designated waste levels of pesticides. <br />You have indicated a desire to continue to utilize the pond for evaporation of <br />wash water from non -applicator aircraft. I have discussed your desire with Dan <br />Ward of our office, and he indicates that such usage will not require a permit <br />from the Regional Water Quality Control Board. Nor, per Jim Miller, will it <br />require a permit from the County. You must, however, manage the facility to <br />ensure that no hazardous materials are discharged into the pond. If any <br />solvents, degreasers, caustics, or other potentially hazardous materials are to <br />be discharged to the pond you will need to file a Report of Waste Discharge with <br />this office. <br />Please contact me if you have further questions on water quality regulations <br />that apply to surface impoundments. <br />JOHN L. MENKE <br />Land & Water Use Analyst <br />JLM:I jl <br />Ve : Mr. Jim Miller, San Joaquin County Local Health District, Stockton <br />