FIELD DOCUMENTS_PART 3 FILE 2 - Laserfiche WebLink

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OXY Glenn SANS Holdings, Inc. `w'l A subsidiary of Occidental Petroleum • Nitrate, sulfate and chloride using EPA Method 300.0 • Organochlorine pesticides (OCPs) using EPA Method 8081 • Organophosphorous pesticides (OPPs) using EPA Method 8141 • Herbicides using EPA Method 8151 Analytical results were reviewed by ARCADIS and summarized below. Copies of the analytical laboratory reports are included in Attachment 1. The following concentrations were detected in the liquid characterization samples collected from the UST: • 28 milligrams per liter(mg/L)TPH-extractable diesel range organics • 34 mg/L TPH-extractable oil range organics • 11,000 micrograms per liter(µg/L) sulfolane • Greater than 600C Flashpoint (non-ignitable) • Greater than 750 mg/L LC50 (non-toxic) • Non-detect reactive Cyanide or reactive Sulfide (non-reactive) • 6.54 pH (non-corrosive) • 125 mg/L chloride (less than the Secondary Maximum Contaminant Level [MCL] of 250 mg/L) • 1.3 mg/L nitrate (less than the Primary MCL of 10 mg/L) • 34.4 mg/L sulfate (less than the Secondary MCL of 250 mg/L) TPH-purgeable gasoline range organics, VOCs, DBCP, EDB, OCPs, OPPs and herbicides were not detected above their analytical laboratory reporting limits in the liquid characterization samples. The UST was located within the ongoing source area excavation; therefore on October 11 and 12, 2011 the liquid was removed from the UST and the UST was moved from the excavation area and stored on plastic sheeting. This allowed for the continuing of the sulfolane excavation pending receipt of the liquid characterization sample analytical results. These activities were completed under the observation of San Joaquin County Environmental Health Department (SJCEHD) personnel. The liquid was containerized in four 55-gallon steel drums and stored on- site prior to disposal or treatment using the onsite treatment system. Sulfolane Information Sulfolane (tetrahydrothiophene) has been used on site as a cleaning solvent for the pesticide process equipment. It is readily soluble in water and has a health-based criterion of 57 µg/L in groundwater approved by the RWQCB. Closing Based on the analytical results from the liquid characterization sample collected from the UST, the liquid does not appear to be hazardous. Therefore, ARCADIS requests a permit exemption by the SJCEHD pertaining to removal and disposal of the UST and associated UST contents. 5005 LBJ Freeway, Suite 1350 2 Dallas,TX 75244-6119