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1 KLE/NFELDER <br /> u�smnoW.uymsowix. <br /> U <br /> This observed staining is considered de minimis. tjpJurther assessment is recommended for <br /> the observed staining. <br /> Other Environmental Concerns <br /> • The Site was historically used for agricultural purposes through the mid-1990s. It is <br /> common for residual concentrations of pesticides, associated with application for pest <br /> control, to be present in the shallow soils on former agricultural sites. The pesticide <br /> concentrations in these situations are typically less than regulatory action levels, and the <br /> potential for further action to be required to address the pesticides is low. In addition, the <br /> ,Site- a redeveloped for existing truck repair and hauling related activities. Thus, <br /> /no ass ment is recommended associated with the former agricultural use of the Site. <br /> —. Impacted soil associated with the diesel release in the vicinity of the northern dispenser <br /> at the former fueling area on Parcel 3 was reported to be excavated and disposed <br /> offsite. Based on the non-detect or low concentration (58 mg/kg) of TPH-d detected in <br /> the composite samples collected from the excavation, and because contaminated soil <br /> was removed, this release is not considered a. likely to have impacted soil, soil <br /> vapor or groundwater beneath the i No further essment is recommended based <br /> on the information reviewed regarding-this-release. However, it should be noted that <br /> residual concentrations may remain in shallow soil in this area. <br /> 8.5 DATA GAPS <br /> Although Kleinfelder attempted to obtain reasonably ascertainable information regarding the <br /> Site, some information was either not received or not readily available at the time of this report. <br /> Therefore, consistent with ASTM Standard Practice E 1527-13, the following data failure (data <br /> gap) has been identified: <br /> • A response from the SJCEHD has not yet been received as of the date of this report. <br /> • Limited information was available regarding documenting a diesel fuel spill clean up on <br /> Parcel 3 conducted in 2005. <br /> • Limited information was available regarding closed loop-status of the oil/water separator <br /> on Parcel 3. <br /> 20172543.001A/STO16R49461 Page 52 of 54 November 2, 2016 <br /> 0 2016 Kleinfelder www.kleinfelder.com <br />