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<br /> 09.April 1997-
<br /> -: AGE NC'ProJect No 96 0272 4� x � µ rlk
<br /> Page 2 of`4
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<br /> -total depth of 45feetbelow surface grade,(bsg) The location of the probe boring is shoe ion.Figure.-` ,�
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<br /> Soil samples were collected at 5=faot_inter'vals, beginning at 5 feet bsg for the-total epth:of the; {
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<br /> probe boring. All.samples were Collected using the Geoprobe soil sampling•assembly_loaded,with,.
<br /> four brass sleeves..After collection,the ends ofthe second brass sleeve were covered with aluminurn
<br /> r sheets, capped and sealed with tape The sleeves were labeled, placein a chilled container and
<br /> -r trams 6r-R. ,under chain of custod to_Castle Anal Kcal Laborato : Castle in Wznton;�,-California:
<br /> p .� { by } Yt _ ' ( ) -
<br /> 3 All probe.rods,-satnpling:tools and sample liners^used.for sample collection were thoroughly rinsed'
<br /> with.cleanhater after washin with a solution of Alconox-between each.sam iii ;run:The
<br /> g _ p tis probe!
<br /> s •_ Bole was subsequently.- throughout its entire depth with Portland Cement � -
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<br /> 3.2. ti LOGGING
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<br /> ti Soil was;extruded from the reindining brass sleeves and screened for-the.pmsence of organic vapor..
<br /> ...
<br /> using'a="photo-ionization detector (PID ;:Thermo Environmental"580A; .1 eV, ca'libr-ated to'�,. '
<br /> isobutylene' ,and 'the readings uTere ecorded on the boring:logs The encountered soil was described ,_ 4 1
<br /> i in accordance with the.Unified;Soil-Classification System (see Boring.Log, Appendax A)
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<br /> .. 3.3. SAMPLE ANALYSIS F # ' p,
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<br /> Y- Three soil=samples were'analyzedfor total petroleum Hydrocarbons quantified as gasoline.(TPH g), Y .,
<br /> x _ ,
<br /> and volatile aromatic `compounds .(benzene;-toluene .:ethylbenzene arid'xylenes
<br /> methyl tertiary-butyl ether.{IvlTBE)in accordance wiods'8015m and 8020;respectively-='
<br /> S7.URVEY'.3.4. WELL SURVEY
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<br /> City oStockton and Califointa Water Service;(CaIVJater) maps were consulted to deterrrzine then r g ��
<br /> t x, location ofinuriicipal wells near'the sub ect 'roe A seatcli;rad us_of 2,`000 feet fro the°,sub ect
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