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Kayo Status Report 4 Page 7 <br /> May 8, 1987 <br /> it <br /> The underground tanks were removed c� October 300 1986 . <br /> Contaminated Soil in the tank backfi 1 abeneath the tanks was <br /> removed. Dames and Moore installe th monitoring wells on <br /> December 12, 1986 . Subsequent wa er i pling showed minor <br /> contamination ranging from 200 to 4 0 U .. benzene . The report <br /> for Phase I investigation was submit ed 71ebruary 3, 1987 . <br /> Groundwater Technology, U nc. has and d Phase II of the <br /> subsurface investigation: This work 5isted of installing <br /> five monitoring wells near the bo nda:. of the property and <br /> offsite near the northeast corner of t property. The final <br /> report with recommendations for rem diz n is due by May 15, <br /> 1987 . <br /> Econo Station <br /> 7601 Greenback Lane <br /> Citrus Heights, CA i <br /> Env. Assessment Consultants : Phase I - L , <br /> Phase II - G1; dwater Technology <br /> Remediation Consultant: Groundwater Tech gy <br /> This station is closed and will not be pened by Kayo. Kayo <br /> proposes to sell this station. The und,� lound tanks have been <br /> removed and the tank pit backfilled With an pea-gravel . <br /> A groundwater recovery well and grou dJ, treatment system has <br /> been installed . The system has bee oi! ting since April 20, <br /> 1987 . The pumping rate, is set v zy , r (approximately 300 <br /> gallons per day) in orderfto meet t e a� missions limit. The <br /> aquifer is very low yielding, however, ai R higher pumping rate <br /> would probably not be appropriate . Ail: tripper influent and <br /> effluent monitoring is being coed ctei wise each month as <br /> required by the Sacramento County Pollution Control. <br /> District . Reporting is on a quarterly bi . 5 . <br /> � Y I <br /> Groundwater Technology, Inc. has been I --racted to conduct a <br /> pump test and assess the effective essl the recovery system <br /> and air stripper . The pump test wa cc; Icted on April 20 and <br /> 22 . They will make recommendations or rem improvement after t <br /> they complete their testing . <br /> i <br /> .J <br /> I] ' <br /> i <br />