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KEI-P88-1013 .QR3 January 29 , 1993 Page 3 recommended the installation of an additional monitoring well as a replacement for farmer well MW9 . This well, identified as MW14, is shown on the attached Figure 5 . In addition, in order to comply with a request by the SJCPHS to bring well MW6 into active status, KEI recommended that MW6 be destroyed and a replacement well installed. This well, identified as MW15, is also shown on the attached Figure 5. KEI understands that Unocal is currently in the process of obtaining off-site access permission for this additional work. Once off-site access agreements and all necessary permits have been obtained, KEI will proceed with the proposed well destruction and installation work. As previously reported by KEI, additional monitoring wells in the reported downgradient direction of the former Unocal site are not recommended at this time. A Montgomery Wards ' auto repair facility occupies the parcel (across Robinhood Drive) in the apparent downgradient direction of the site. As noted in KEI Is report (KEI- P88-1013 .R2) dated July 15 , 1992 , a previous inspection of the Montgomery Wards ' site revealed areas of concrete and asphalt disturbances that appeared to be the locations of former pump -islands and underground storage tanks. Per a previous phone conversation with Mr. Michael Infurna of the SJCPHS, the County is requiring that Montgomery Wards perform an environmental investiga- tion on their site. This investigation is apparently being required because of contaminants that have been detected in the vicinity of the former pump islands and underground tanks that have been confirmed to previously exist at the site. KEI will review the technical report for the Montgomery Wards ' site when it becomes available, and will make additional recommendations pertaining to the Unocal subsurface investigation as warranted. DISTRIBUTION A copy of this report should be sent to SJCPHS, and to the Regional Water Quality Control Board, Central Valley Region. LIMITATIONS Environmental changes, either naturally-occurring or artificially- induced, may cause changes in ground water levels and flow paths, thereby changing the extent and concentration of any contaminants. Our studies assume that the field and laboratory data are reason- ably representative of the site as a whole, and assume that subsur- face conditions are reasonably conducive to interpolation and extrapolation.