Laserfiche WebLink
�10 <br /> �����-�i,� <br /> x� <br /> •: 1 <br /> Mr. Kvle Christie r" ' <br /> January 22, 1990 <br /> Page h <br /> The size of the benzene plume and the m= of contaminants apps: to br, swalle r than that YY <br /> of the summer quarter 1939. Figure 3 illustrates the benzene plume in the summer quarter <br /> 1989 for comparison. <br /> The pmsprce. of xylene in sample PR-1 is probably the result of laboratory error. Xylene is <br /> present at concentrations very close to labcra9'-y &-tection limits, and no other BETX <br /> constizucnts appear in the sample from well PR-1. Therefore, xylene probably does not exist r <br /> in groundwaecr from well FR-1. <br /> 7 <br /> Recommendgtions <br /> a <br /> Continued quarterly monitoring c-f the site is recommended. Samples from.well PR-I should <br /> be monitored for :ite presence of xylene. All wells should be sampled for TPH on a yearly �'X <br /> basis begirming during the winter quarter of 1990. This measure is being required by the ;,n <br /> Joaquin County Environmental Health Department. <br /> Very truly yours, M. .. <br /> BROWN AND CALD`4VELL <br /> A j <br /> CIaudia Stone <br /> Prioject Manager i <br /> CS:PYD:mkw <br /> Enclosure <br /> cc%nc: Ms. Laurie Cota!la,,San Joaquin (xurity Health Department <br /> Mr. John Randall, flevron <br /> Mr. Chris Wtnso*;ARCO Products Company s <br /> . _ f <br /> BROWN AND CALDWELL <br /> 723 S STIIEET SACRAMENIO.CALIFORNtA959147a92.19161444.Ot2J '"� <br />