COMPLIANCE INFO - Laserfiche WebLink

Home Browse Search

E. SUMMARY OF PREVIOUS INVESTIGATIONS ♦ September 2010 — Limited Phase II, conducted by PTS on behalf of a potential purchaser of the property. PTS drilled 5 shallow borings and collected one soil sample from each. The soil samples were analyzed for halogenated volatile organic compounds (HVOCs), TRPH, and total petroleum hydrocarbons as diesel (TPHd). PTS reported impacts to the soil that are below regulatory levels. PTS concluded the following(excerpted directly): CONCLUSIONS Site activities appear not to have resulted in significant contanunation of soil or groundwater at the Site. It is our opinion that other known or possible conlaminalml sites in the vicinity are unlikely to have affected the Site properly. This judgnicut is based on our review of historical data,our undemanding of the status of known or potentially contaminated sites,the distances from potential silts of contamination to the project Site, and tlx:nature of the subsurface soils in the area. No violations or records of contautinatiou likely to have affected the subsurface at the site were found in our file review. No furllier work to assess possible contamination is recommended. ♦ July 2010-Phase I ESA, prepared by PEI. PEI concluded that there were the following issues; o The subject property was occupied by Valley Nitrogen Producers, a fertilizer manufacturer and distributor, from at least 1975 to 1981. It is unknown specifically what operations were conducted at the subject property. However, Valley Nitrogen Producers is listed at another location in Stockton as under investigation for potential "fertilizer, pesticides/herbicides" impact. This information raises the concern that Valley Nitrogen Producers'historical on-site activities could have impacted the subject property. Based upon the concerns regarding the historical usage of the subject property by Valley Nitrogen Producers,the recommended Phase II investigation for the subject property should also include analysis for pesticide and possibly fertilizer parameters. o Information from the EDR database indicates the western adjoining property,(former Wilbur- Ellis Co.) at 212 Industrial Drive, is identified as a SLIC site. SLIC database information indicates the potential contaminants of concern are "pesticides/herbicides", potentially affecting the soil; and the site status is "Open-Inactive" as of 1995. PEI's review of on-line Geotracker information did not find any further specifics; therefore, it does not appear that significant further investigation has been performed since 1995 by regulatory agencies. PEI's city directory review indicates that Wilbur-Ellis Co. may have been a farm chemical supplier in the 1970s and 1980s. PEI's review of the LUST case 2006 vapor intrusion report for the adjoining 212 Industrial Drive property found that the soil fumigant ethylene dibromide (EDB) was analyzed for three times(in 1999 and twice in 2005) in groundwater at that site, and was not detected at those times. However, that analysis involved only one pesticide compound. Given the proximity of this adjoining site and the lack of information available on the potential "pesticides/herbicides" concerns at this site, the adjoining site poses a potential REC to the subject property. Additionally, based upon the concerns regarding the historical usage of the subject property by Valley Nitrogen Producers (a fertilizer and possible pesticide distributor), the recommended Phase H investigation for the subject property should also include pesticide and possibly fertilizer parameters. Limited Phase II Environmental Site Assessment Report Pinnacle Environmental,Inc. 248 Industrial Avenue,Stockton,CA 95206 Page 9