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T- <br /> I <br /> ppE-:TANK ASSESSMENT <br /> µ ...� RESULTS REp011T ea Kan) <br /> t Y jWS S.E1 VOT610,Stockton.ea <br /> page a laboratory <br /> `� for.. analysis. Copies <br /> of the analytical <br /> California endix �. <br /> ya reports. are included in App <br /> the near surface soils <br /> 3.1 8O l as borings+ These materials <br /> in the soil silty CLAYS• rade and <br /> ` As encounte r dgeneral, of sandy+ thre= (3) feet ighl grade r. <br /> consisted, depth of approximately SILTS with hi9 feet below <br /> to a dep sandy ten (10) ally <br /> existed in general, by principally <br /> depth of approx�mateiy was p silty <br /> w were underlain+ these SILTS SILTS and <br /> Clay contents to a below <br /> " The soil horizon horizons of sandy poorly graded, <br /> grade. interlayered h clean+ P graded <br /> Of relatively eyed I".orizo s with <br /> r.. characterized a5ional layers interl-fi a to medium to 49 <br /> SANDS with o DS. The th of 485 <br /> fine SANDS- or siltyr a dep data <br /> medium and, .towards the encountered at glow count <br /> increasingl's SANDS the borings+ and <br /> depth. A saturated horizon fine to medium a of indicated <br /> Y ow rade in sr-, due to the ang rates A <br /> feet bel g However, drilling conditions'is not representative+ corrected from <br /> not recorded. consolidated $oi da logs} is <br /> w, therefore was and partially . below 9 <br /> Profile (with depthson the boring tions are <br /> r� i medium dense <br /> e ed sail p soil degcrip <br /> reconstru n depths recoraetailed <br /> the 'tas-encountered and 4. More as Appendix A• <br /> included on Figures 3 logs inc]uded <br /> "' presented on the boring <br /> va or sc sen ors utilizing an SOPu <br /> 3 , 3.2 Results Of organic vapors is <br /> according to Aegis' <br /> were screened for PID) recorded on }he hora �g <br /> _ soil, samples detector' ( s were ed in <br /> hotoionization reading snit vapors rang <br /> ,. portable P the highest vaporobserved organic <br /> readings were <br /> s Appandix C• endix A• <br /> in App The hig gest below grade <br /> logs included my to 620 PFmv• arized on <br /> s, from 26 to 35 vertical is summ <br /> coaatodepths ranging snit vapor screening <br /> F ' Observe( Soil orf <br /> in both 'borin and B-8' , Figures 3 an <br /> Sections .A A" <br /> auger using brass <br /> 4 6' 3.3 o five feet 0, . selected soil <br /> collected everiit-spoon sampler tical Services of <br /> Soil samples were Petroleum <br /> Califorz1ia-modified <br /> split-spoon <br /> lai P ethyl <br /> liners in a e submitted to Coast-to-Coast An Y lanes+ <br /> �. zed for total purge-dichlaraethane <br /> F samples were were analy toluene' <br /> California and gasoline, benzeED9} and l+ <br /> .Laapa+ TPPH) lead by EPA method <br /> t 4"f hydrocarbons ( ethylene dibromide ( and <br /> Cotal are <br /> benzene, (BTX&E) Hethads :8240/5930r and chain-Of-custody <br /> (EDC) by GC/MS EPA reports <br /> --The-certified <br /> laboratory <br /> � t 7420 - Append g; -- — <br /> w: included" as; <br /> x <br /> J. <br /> 'r yy <br /> f <br />