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' "rate Office • Tel: (714)667-2300 Fax: (714)667-2310 KY'''�r�'` /r�(``^�'°'i E One City Boulevard West,Suite 1800 , l`CE I V`1 -,� ' Orange,California 92868 LLL«< E NVI R O N MENTAL www.eecenvironmental.com AUG 2 6 2015 ENVIRONMENTAL. August 19, 2015 to C61Tu nCOg RTr- Inn1T Mr.Tom Dikos Aramark Career& Uniform Apparel ' 9005 West 192nd Street Mokena, Illinois 60448 ' Subject: Wastewater Discharge Event at 7679 Longe Street,Stockton,California 95206 Dear Mr. Dikos: ' EEC Environmental (EEC) has prepared this report to document the accidental wastewater discharge event on May 3, 2015, and subsequent response measures at the Aramark Career & Uniform Apparel ' (Aramark) property located at 7679 Longe Street,Stockton,California. BACKGROUND ' The Aramark facility located at 7679 Longe Street,Stockton, California (site;Attachment 1,Site Location Map), discharges wastewater to the City of Stockton sewer collection system.According to Aramark personnel, on May 3, 2015, approximately 4,800 gallons discharged from the wastewater equalization tank and entered the storm water drain located in the center of the northern parking lot of the facility and collected in the storm water vault located approximately 100 feet east of the drain. We assume all water went to the storm drain.Subsequently,Aramark engaged a vacuum truck service company which pumped out approximately 20,000 gallons of the water collected in the storm water vault and transferred it to a frac tank(Attachment 2,Site Photos).Aramark personnel provided notification to the following parties: 1. California Office of Emergency Services(OES) 2. San Joaquin Valley Storm Water/Public Works Department. Based on the notification provided by Aramark to OES, on Monday May 4th representatives from the San Joaquin County Health Dept. and Municipal Utility District contacted Aramark to follow-up on the spill incident. Since the San Joaquin County Health Department had jurisdiction over the storm water system, Mr. Garett Backus recommended additional due diligence be performed to confirm if the resulting spill impacted the remaining storm water system and subsequently remove the remaining water from the system. Based on this request,Aramark retained EEC to oversee the cleanup efforts. ' On May 8th, 2015 EEC conducted a site visit to sample the water in the vault, collect information about the storm water system, and remove more water from the storm water vault to the frac tanks. The quantity of remaining water in the storm water system was estimated to be approximately 40,000 gallons. Environmental Health indicated that the entire storm water system should be pumped out because of the likelihood of the accidental discharged water mixing with water previously collected in the system. The Stockton Municipal Utility District informed Aramark that, depending on the lab results ' and after obtaining a special permit, it would allow the discharge of the water into the sanitary sewer provided the water is first treated through Aramark's onsite wastewater treatment system. EEC, under ' Mid-Atlantic Office:Tel:(410)263-2234 1 Fax:(410)266-86601200 Harry S.Truman Parkway,Suite 330 1 Annapolis,MD 21401 Northern California Office—Tel:(510)398-09711 Fax:(510)867-2053 1 21 00 Embarcadero,Suite 104 1 Oakland,CA 94606