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<br /> i
<br /> As requested the following work plan addresses the items of
<br /> concern as outlined in the April 18, 1991 letter from SJC-EHD,
<br /> a items 1 through 4.
<br /> t
<br /> VARIFICATION SAMPLING OF TANK MELD
<br /> foot depth at
<br /> Wege,.,proposes.:to:hand:-auger..-four borings to the 2T \
<br /> each,;ss3e wall"of ;the'tanlsefield,
<br /> from 11round
<br /> .71 to 12.9 .atmonitor Depth to g well
<br /> water for this site rangs
<br /> MW1.
<br /> At, :ruse ::]1=,--Eoat:.depth of_ .eack� ;boring, samples will 'be''bbtaii,ed' to
<br /> top ,of+:,gmound iwa'ter, and field screened for total volatile organic
<br /> vapors using a HNu photoionizing detector with a 10.2 electon volt
<br /> ' bulb. The:;=,sample : exhibiting. the-_highest response-,'f rom-,the'-'`IiNu,
<br /> wk11- be^contained" in' a "brass" sleeve, Capped with 'alumfuhum
<br /> fo�7 tr`nt
<br /> and-,-,,plastjc. lend capsy that',�wil1 be"-sea�'�d iFith-.duck :.tapes
<br /> 1$IyeZecl+' 'ith' saanple: -xD#, time ;sampled, '•dnte 'safapled' arid' analyai.s
<br /> to ,be; run The -Pample'wiZZ then' be°planed in: a Zip-I,ac3C "kiAggie
<br /> s+enlecll � and placed on ,ic z` " a'cooler:,and!::transported"that day':to
<br /> phemtecht(Analyti:calw Laboratories: (DHS# 359) for analysis 5030) and of Total
<br /> using GC FID
<br /> Petroleum Hydrocarbons Gas (TPH G) g a e 17 of Tri-Regional
<br /> using method 8020 as shown on Table #2, p g
<br /> Board staff Recommendation August 10, 1990-
<br /> Vp,RIFICATION SAMPLINGFOR LEAD AT WASTE OIL EXCAVATED AREA
<br /> yEC�E t.sailX, -handy auger;a-:sample boring 'at..the-south
<br /> forriies^'srastie o�]; tai±3c-;;ba�kfzZZ':t'a°-ttie eight fast "depth grid obtiai'h
<br /> smplp� foss tetai andolubla lead AIS as�ple btaz..�dg cW741�
<br /> 5e:: husgd a gerec�,at the sauth,7est corner 'of the., r. eict to the''° i8
<br /> epth1,to o9atdin baclfgroiin sample"for"'analysis of ;tote -an
<br /> �a]tab3��+fi„lead,,-lasing method 7421.
<br /> VARIFICATION OF CONTAMINANT FREE GROUND WATER CONTALMINANT FREE
<br /> DOWN GRADIENT OF TANK FIELD.
<br /> A ,•,temporar.yy: monitor -Fel-1 4W4]° will be' placed riorthBTEX .,oAt the,
<br /> hart)::fi aid, c�'ai7eo 'r3`1"aridYthen"saic►gTed=-Eos,,TPl3:t# sand==:BTEX, At the
<br /> MW2 and MW3 will be
<br /> ti=ne the sample is obtained monitor a3ellsong with the newly installed
<br /> gauged for depth to ground water,
<br /> �
<br /> MW4. If- -laboratory-"analysis_ iaLdicates.::that.,the::J.gro.und.k ywater,:.,
<br /> ��P_lecl�4x_facc►m.�-6 ,d,r;i sr:,cant�amir�ant.i:°f raa,��=.'a rrQquest--toder�trc5
<br /> WELL CONSTRUCTION
<br /> rin
<br /> The well will be drilled under Western GeanEdngaugerineers with C-57dak17i.511
<br /> contractors license (513857) using a
<br /> i
<br /> page2
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