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' • Site Investigation Work Plan Raymond Investment Corporation ' Former Helena Chemical Facility Page 2 mg/kg; and ammonia up to2,500 mg/kg. Groundwater samples collected from the former ASTs locations ' contained TKN up to 0.441 milligrams per liter(mg/L); ammonia up to 0.34 mg/L; and nitrate up to 968 mg/L. ' Condor reviewed the reports available on the CVRWQCB's Geo tracker website and noted the following: The underground storage tanks (USTs) were operated by Northwestern Equipment & Supply; The USTs were located north of the northwest comer of the product warehouse; the tanks were 1,000 and 2,000 ' gallons in capacity and used to store gasoline and diesel fuel; were removed in 1986 under SJCEHD oversight; SJCEHD indicated that there were that no signs of unauthorized release observed; and laboratory analytical results from Canonic Engineers and addressed to J. H. Kleinfelder indicated that soil hydrocarbon concentrations were below the detection limits (Table C, Appendix B); and SJCEHD indicated that the case was closed in a letter written prior to Feb. 9, 1994. (Pages 188-201 of second half Phase I PDF) On September 15, 2001, Geomatrix sampled the contents of three five gallon containers noted in a August 17, 2001 inspection report. The contents were tested for organochlorine and organophosphate pesticides, heavy metals, TPHs, nitrates, and TKN. A lawyer's letter, dated October 29, 2001, to the SJCEHD ' indicated that "No pesticides, organic chemicals or petroleum hydrocarbons were detected in any of the samples, and that heavy metals were at background levels." The analytical results were included. (Page 168-181 second half Phase I PDF) ' On September 17, 2001, Geomatrix Consultants, Inc. collected five surface samples at the former bulk tank farm area. Three samples were analyzed. Organochlorine and organophosphate pesticides were ' analyzed. The laboratory reported that concentrations were below the reported detection limits (Pages 113-123 second half Phase I PDF). The metals Arsenic, Barium, Cadmium, Chromium, Lead, Selenium, Silver,and Mercury were analyzed. Organophosphate and organochlorine pesticides and heavy metals were interpreted to be within published background ranges (Pagel21 second half Phase I PDF). ' TKN and Ammonia as N were detected at elevated concentrations. Geomatrix submitted a Soil Assessment Workplan dated November 20, 2001 to evaluate the lateral and vertical migration of TKN and ammonia in the vicinity of the three formerly located bulk tank farm structures (Pages 113-123 ' second half Phase I PDF). On April 3, 2002 Kleinfelder conducted a Geoprobe Soil Assessment at the site for Helena Chemical ' Company, B-1 through B-18. Samples were collected at depths of 0 (surface), 1, 3, and 5 feet below ground surface (bgs). The Kleinfelder report, dated July 30, 2002 included the analytical results and a map showing the boring locations. TKN, ammonia, and nitrate were detected in all of the borings ' including the boring intended to serve as background concentrations sample location (BG). The Kleinfelder report refers to inferred zero lines on an iso-concentration contours plot, but that figure was not available on Geotracker. (Pages 103-110 second half Phase I PDF) ' Highland Wholesale Foods leased the Site during 2006. On July 5, 2006 a failed barrel of sulfur, a broken bag of time, and seven containers of unknown waste were cited. Photos taken by SJEHD personnel show that the containers were located north of the off-site warehouse. A letters dated July 12 and July 14, 2006 ' indicated that the drums of sulfur and 10 pounds of lime had been removed and that some impacted soil had also been removed'. No confirmation sampling results were associated with these actions. (Pages 50- 64 and 98 second half Phase I PDF) ' Waste stream documentation indicated that waste contained Endosulfan, an organochlorine pesticide (ODP) (Page 156 of second half of Phase I PDF). ' f.4) CONDOR