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Jerry Moore <br /> 549.1 F Street <br /> Page 2 of') <br /> teral <br /> It is noted inHO, but then <br /> the WPSSI that its purpose is to delineate the verticoanlandolaoses <br /> . extent of impacted ground water as mentoring we Is irected byarou d the periphery of the <br /> install five shallow ground Ovate of <br /> known fume. The proposed wells should help delineate theakfal2aDlateral sisntthe <br /> impacted ground water, but will not address thi nth <br /> of work is not adequate to address the EHD 1 NovemsubmOoa <br /> proposed scope in th WpgSl is not ap roved. Please <br /> d fan addendum so a o elements of the directive <br /> revised work plan or work p the is 7rZ <br /> are addressed by 01�eu <br /> 2004. re the eastornortheast to more tightly <br /> we er oward that the <br /> delineate the plume of impacted ground water. <br /> in esDtigatedso fenear recommends <br /> suspected <br /> vertical extent of impacted ground Ovate <br /> source area, in the down-gradient direction, and near MW-1 2 to be sure the <br /> plume is not 'diving' and to obtain design criteria for a wellnsuggestsel well rfour sand <br /> the Marty <br /> P for the Marty <br /> well. Please note that the drillers log that should be <br /> intervals of interest between �f rfa ce oPdate. You rade and Bmay efi find penetration <br /> sampled and then monitoredPP <br /> testing (CPT) a useful tool for acquiring this information. <br /> Questions <br /> or comments may be directed to Nuel Henderson at (209) 468-3436. <br /> Donna Heran, REHS, Director <br /> Environmental Health Division ` <br /> G Margare agon .E.H.S. <br /> Ro. <br /> Nuel C. Henderson, Jr., Supervisor, Unit IV <br /> Unit IV - Site Mitigation <br /> C; James L .L. Barton — CVRWQCB <br /> Rich Johnson —APEX Envirotech, Inc. <br /> V <br />