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All <br /> I�db 1. lie-Aflifir St <br /> W s SRt. A2 Box 177 <br /> , A 95695-9603 <br /> WESTERN GEO-ENGINEERS WoodlandFAXC916/662-0273 <br /> REGISTERED GEOLOGISTS 9 16 ) 6 6 2-4 5; 1 <br /> Ap r i 1 22 1988 <br /> 11f,AN Pfik SLTI? ASSESSMENT, OUTLINE <br /> DESERT PETROY,EUM SERVICE STATION #767 at 950 1 1 th Street Tracy <br /> California , in Sec 29 , T2S , R511 , MDB&M <br /> FOR: Peter Allen , WALTON VNGINErRING , 837 Riske Lane , West <br /> Sacramento , CA 9569i , (916 ) 372-1888 . <br /> Ref - Walton Project #88-2104 <br /> I. Preliminary Plan For Site Asesement <br /> A. Extract fluid from open pit left when 3 tanks were rem6ved ./ <br /> Pump into a holding tank (tanker truck ) - <br /> to clean up tank hole <br /> 2 , to check for recharge <br /> a . check for product in recharge fluid <br /> b. if product is found , extract into holding tank <br /> re cat ILELti_1. clean <br /> S. Remove all sand and pea gravfrom tank bole and remove <br /> native soil y. <br /> 1 . past odor or sniffer reading detection <br /> 2 . screen soil with fruit jar and sample sniffer <br /> 3 . when "clean" <br /> a , sample native soil at: each of the 3 tank sites <br /> b , Jihe above 3 samples J.o a certified. lab for BTEX <br /> C. feet into 1st water (estimate <br /> C install 3 monitor wells to <br /> 26 feet , ttoal depth ) . Twp down gradient and one <br /> background (up gradient) and for gradient measurement . <br /> 1 . NW corner of site (9th & 11th streets ) ; down gradient. <br /> 2 . NE of tank hole (near 11th street) ; down gradient, <br /> 3 . South of -SW corner of Station Building ; background <br /> 4 . Develop by pumpin-- fl ^ d into tanker truck <br /> D. When certified lab results are back showing bottom of tank <br /> hole is clean <br /> I - Install now tanks as previously planned . <br /> II <br /> 2 . open station for business . <br /> 11- Set up monitoring program to determine if any other remedial <br /> work is necessary . <br /> VIII . Prepare complete site characterization and assessment plan <br /> if other remedial action is needed . <br /> Respectfully sublyttted <br /> SLC 1 <br /> ?47 <br /> //-'Jack E. Napper .,," <br /> Registered Geologist 83037 <br /> J EN/I in <br />