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CITY OF STOCKTON 5 OF-PARTMIENT OF MUNICIPAL UTILITIES 2500 NAVY❑RIVE STCCKT0Nj, CA 9E20G-1 I S1 (209)937-E750 FAX(205)d37-?709 December 15, 1997 Mr. Ron Clark, Transportation Manager GATX Logistics, Inc. 4547 Frontier Way Stockton, CA 95215 FIRE SUPPRESSI N WASTEWATER CONTAESING BATTERY ACID ROFF This letter provides you with confirmation of the City of Stockton, Municipal Utilities Department's (MUD)inspection of the cleanup operation at the above addressed facility as a result of the truck fire containing approximately 150 truck/forklift batteries, which occurred on Wednesday, December 10, 1997. I am in receipt of the laboratory analytical results documenting sampling that was conducted within the storm drains in the south and north locations on your property, as well as sampling locations in the City's storm drainage system on Gold River Lane (see attached map). The subsequent cleanup operation entailed neutralizing approximately 300 gallons of fire suppression water containing acid runoff from the spent batteries. The neutralization process was accomplished within the storm drainage system, the neutralized liquid was then removed via a vacuum truck, and temporarily stored in a storage container on your property. It is my understanding that all of this was conducted and supervised by Tom Bartlett of Erickson, Inc. You have requested discharging approximately 300 gallons of the neutralized waste into the City's sanitary system. The attached laboratory results indicate low levels of CAM 17 metals which will not pose a threat to our sanitary treatment plant. Additionally, I observed pH testing of the stored wastewater, and both City storm drain locations on Gold River Lane following their cleanup. Therefore, you may proceed with the one-time discharge to the sanitary system providing: 1. The fire suppression wastewater be flushed with an additional 300 gallons of water to insure its passage through the sanitary system. 2. This is a one-time only discharge based upon the nature and the source of the liquid. Any additional volumes of wastewater generated during normal operating activities must be addressed independently of this request. "STOCKTON.-CALIFOCaNWS SUNRISE SEAPORT"