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Site Investigation Work Plan-Second Revision Raymond Investment Cotpomdon Former Helena Chemical Facility Page 3 On September 15, 2001, Geomatrix sampled the contents of three five gallon containers noted in an August 17, 2001 SJCEHD inspection report. The contents were tested for organochlorine and organophosphate pesticides (OCPs and OPPs), heavy metals, Total Petroleum Hydrocarbons (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 with the lawyers letter (Page 16 8-18 1 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. OCPs and OPPs 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. OCPs and OPPs 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, soil borings 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 lime,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. 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). Condor contacted Brian Martasin of Andersen Environmental, the Firm that prepared the 2013 Phase I and Phase II ESAs. He provided a map of the August 2013 sampling locations. Condor contacted the agent, Mason Ross, of Pacific Coast Capital Partners, the owner of the adjacent property to the north. He indicated that they would not permit site access for the purposes of an environmental investigation. 2.3 GEOLOGICAL INFORMATION Surface soils are identified as Yellowlark gravelly loam on the United States Department of Agriculture Web Soil Survey. The underlying soils are identified as Quaternary Alluvium on the California Geologic Survey(CGS)2010 State Geologic Map.Previous CGS maps have identified the soils as belonging to the Modesto or Modesto/Riverbank Formations which are formed from arkosic alluvium. ' Waste stream documentation indicated that waste contained Endosulfan,an organochlorine pesticide (Page 156 of second half of Phase I PDF). n t., CONDOR