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UNION ICE COMPANY <br /> 42S Noah Union Street, Stockton, CA <br /> Quarterly Sampling Report-December, 1992 <br /> Site Code 241434 <br /> Narrative <br /> On December 23, 1992, W <br /> Environmental Consultants, Inc., in conjunction with <br /> �II�II'Is Inc•, conducted the field measurement, wellum th <br /> monitoring well located at this site. P P g and sampling on the <br /> The ground water elevation was taken from the well prior to um <br /> by means of a steam cleaned, s pumping. It was evacuated <br /> volumes were um stainless steel bladder-type pump. At least three <br /> -� Pumped from the well. During the three 3 v01�, (-�) well <br /> well, samples were collected ( � me Pump down of the <br /> m rature. to measure the field pH, electrical conductivity_and <br /> Pe once stability was achieved and a minimum of <br /> removed, the sample was collected. It was then labeled and three (3) vo lujiles.:were <br /> blue and crushed ice. Plate in an ice chest with <br /> The sample <br /> t p e was logged on a Chain of Custody form and trap <br /> sported by GeoMonitor, Inc., Laboratories, a State certified laboratory located in Greyhound <br /> t, <br /> California. The anal <br /> yses Pwrgeable aromatic hydrocarbons guested for the water sample was EPA methods 502 for <br /> Xleve (Benzene, Toluene, Ethyl <br /> Y ), GCFID 3510/8015 for kerosene/die.Sel and 418.1 or Benzene acid :Total <br /> deection limits used were 0.5 µg/l for Benzene, Toluene, Ethyl I3enzeneI total 1 Tl-�e <br /> 0.05 mg/1 for kerosene/diesel and 2.0 mg/l for oiUgrease. <br /> y ene, <br /> Summary of Analytical findings <br />� The monitoring well, at this site <br /> (AM-1), tested ND (none detected) for benzene, <br /> toluene, ethyl benzene, xylenes, kerosene, diesel and oil/grease. <br /> Estimate of Residual Contamination--Tank#3 <br /> Upon request by PHS/El-]OD, an estimate was made of residual contamination associated <br /> with the former tank 0, which was a 500 gallon tank that had contained both gasoline and <br /> either fuel OR or diesel fuel_ This estimate was based on the six samples that were <br /> collected from the walls and bottom of the re-excavation which was carried out between <br />