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1 • • HLULIVEL <br /> AUG 2 6 2015 <br /> 1 ENVIRONMENTA[. <br /> Aramark's direction, pumped an additional 20,000 gallons from the vault and into a second frac tanku�COpgT"nGNT <br /> 1 leaving approximately 20,000 gallons of water left inside the vault. <br /> On May 13th, in anticipation of the possibility for more storm water based on a forecasted rain event, <br /> EEC returned to the site and pumped the remaining 20,000 gallons of water into a third frac tank. <br /> 1 Environmental Health staff visited the site and concurred the storm water basin and conduits were <br /> adequately addressed and empty. <br /> 1 FIELD METHODS <br /> On May 8, 2015, EEC collected a total of four water grab samples, for water quality analyses, from the <br /> 1 following locations: Rydberg Creek, the storm water vault, the storage tank used to hold the pumped <br /> vault water (frac tank), and the on-site equalization tank (Attachment 3, Site Layout Map). All samples <br /> were analyzed in accordance with the U.S. Environmental Protection Agency (USEPA) analytical <br /> 1 methods;Method 82608 for volatile organic compounds(VOCs),Method 200.7 for total metals,Method <br /> 245.1 for mercury,and Method 1664 for oil and grease and non-polar material(SGT-HEM). <br /> 1 RESULTS <br /> A summary of the constituents detected during the sampling event is provided as Attachment 4, <br /> Summary of Water Sampling Data, and the laboratory data are provided as Attachment S, Laboratory <br /> 1 Analytical Reports and Chain-of-Custody Records. <br /> The analytical results from the samples collected on May 8, 2015 revealed the water was not hazardous <br /> 1 and the concentrations of the constituents of concern were well below the California Maximum <br /> Concentration Levels for drinking water. On June 8, 2015, based on the analytical results, the Stockton <br /> Municipal Utility District approved Aramark's request to discharge the water into the sanitary sewer via <br /> 1 Aramark's wastewater treatment system. EEC returned to the Site on June 23, 2015 to transfer the <br /> water into Aramark's 106,000 gallon equalization tank. The water was treated through the wastewater <br /> treatment system in accordance with Aramark's industrial wastewater permit and was discharged into <br /> 1 the Stockton Municipal Utility District. <br /> If you have any questions about this report, please contact me at (714) 667-2300 or <br /> 1 kwaenerCdeecenvironmental.com. <br /> Sincerely, <br /> 1 EEC Environmental <br /> �LVK <br /> ' Kyle Wagner <br /> Project Manager <br /> 1 Attachments: 1. Site Location Map <br /> 2. Site Photos <br /> 3. Site Layout Map <br /> 4. Summary of Water Sampling Data <br /> 5. Laboratory Analytical Reports and Chain-of-Custody Records <br /> 1 <br /> 1 <br />