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Kt tINFELDER 4 SENSITIVE RECEPTOR SURVEY Kleinfelder conducted a sensitive receptor survey which included review of records from the Department of Water Resources (DWR) and PHS/EHD permit records for indications of ' potential sensitive receptors within a 2,000 foot search distance of the former underground storage tank (UST) at the subject site Local water purveyors were also contacted for potential receptors in this same search distance A physical search for sensitive receptors within a 500-foot search radius was part of the survey 4.1 DWR SEARCH AND DISCUSSION ' DWR well los were obtained in October 1998 and forwarded to Kleinfelder b Wilbur-Ellis g y Company (Appendix F) The well logs were requested for a 2,000-foot search distance from the former UST Wilbur-Ellis's 1998 DWR request for well logs included a search area including Township 1 North, Range 6 East, Section 25, the southwest quarter of Section 24 and the eastern ' half of Section 26 A total of nine well logs were identified Additional well logs were obtained by Krazan and Associates (Krazan) from DWR for Wilbur- Ellis Company for a 1,000-foot search distance Four additional well logs were located by DWR from Krazan's request ' A total of 13 DWR well logs were reviewed Six wells were found within or potentially within the requested 2,000-foot radius Three of these well logs were monitoring wells located at the subject site and therefore will not be discussed The remaining three wells and associated data are summarized in Table 3 and are referenced as arbitrary well number 1, 2 and 6 The approximate well locations are illustrated on Plate 6 WELL NUMBER 1 AND 2 Both wells 1 and 2 are located near the perimeter of the 2,000-foot radius at Valley Tomato Products Company located east of the subject site It is unknown if these wells actually lie within the search distance Wells No 1 and 2 were noted as irrigation and municipal wells, respectively WELL NUMBER 6 ' Well number 6 had a given address of 3267 McKinley Avenue However, the northern most address noted on McKinley was 4303 (Addresses increased on McKinley towards the south) Other businesses north of this location had addresses on El Dorado Street, and the well with this address was not observed The specific location of this well is not known but has been illustrated on Plate 2 as a possible former location The estimated location of well 6 is cross gradient and approximately 1200 feet northwest of the former UST 20-4439-01 E0112000R726 Page 5 of 17 Copynght 2000 Kkinfelder,Inc October 16,2000