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Mti � <br /> k <br /> BlZm-west, int. <br /> e_ �,nou;'" ;ray acs Urr.,a _ <br /> - ,2 �•vI=5 tax,»t 5,5�o'�=A <br /> my 15.1991 <br /> els. Mary lrleays <br /> Public Health Services<Environmental Health <br /> San Joaquin County <br /> 1601 East Hazelton Avenue <br /> Stockton, California 95201 <br /> Subject: Quarterly Ground Water Monitoring Report <br /> 1515 West 'Veber Avenue. Stockton.CA <br /> Site Code: 1284 <br /> Dear `Mary: <br /> ERM-West, Inc.has completed additional work at <br /> 1515 West <br /> twotnewWeber Avenue. <br /> The work consisted of the construction and samplingonitoring wells. This <br /> monitoring wells and resampling of three existing <br /> letter contains a report of our findings. <br /> W <br /> The two monitoringwells were constructed on April 12, 1991 at the <br /> locations depicted in Figure 1. The wells, labeled Mti'V•4 and N'W-5' were <br /> d within <br /> located hydraulically downg;' the <br /> adient of the tank site anhe soil orings at <br /> boundaries of the former tank location, sampled at 5 foot intervals. A <br /> each location were drilled to 30 feet and same <br /> portion of the sample at each depth interval was preserved for subsequent <br /> laboratory analyses. The remainder of the sampled soils were used for <br /> ciassificauon according to the United Soil Classification <br /> ing by ha d space <br /> enclosed boring logs and for preliminary <br /> analysis. feted <br /> After the borings were advanced to a depth of 30 feet,they were comp <br /> as monitoring wells. Well completion information sp�theed mit is v also ch of <br /> the boring logs. A copy of the San Joaquin County <br /> wellincluded. <br /> --The two constructed o£2-inch diameter, flush-threaded, <br /> --- _...._ _......__ _...__._. ronmately <br /> .Schedule 40 PVC. Well screen was set ata dept intery <br /> ai Resources Management Greua win orlices wongw,ge <br /> 4n att:hate ct The Enwrgnmen i <br />