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intervals for soil classificat' Bnyett Petmjeum(4 19 S. site History
<br /> of I6-!6.S feet, 20- Main&,,Manteca)
<br /> twelve 21.5 fee�on and three soil samples were page 2 Of 12
<br /> soil samples , and 26-265 feet for laboratorycollected &orrr each b
<br /> reported detection Ii indicated petroleurrl h analyses. boring at d
<br /> mits in an hydrocarbons Y Laboratory anal nth intervals
<br /> Y of s nples, were not detected at ar Ytical results Of the
<br /> on February 2, above the laboratory
<br /> two 2001, W�
<br /> CPT borin , in conjunction with VBI In-Situ Testing
<br /> respectively. gs at the sire. CPT-1 and CPT-2 g of Sacramento
<br /> Y Barb borings were to were completed to de , Cali ornia a
<br /> depths of 20 to 24,1 feet ad due to , advanced
<br /> 23.8 to 26,4 feet, 4g and 50.2 to 57.6 feet b s Irehsal, Beds of cla per of 76 and 76.4 feet
<br /> the 7 to 55.4 8 CPT-2, Y were encountered in CPT-�at
<br /> CPT borings in a letter dated
<br /> and 62,7 to 66.9 feet b 2' beds of clay were encountered at depths of
<br /> 0"eo April 25, 2002 WHF in co � 7,200I, to Mr.�Jeffrey onbmitted a report of their fndin s
<br /> } a d njunctiorl with Frontier D g Of the SJCEHD g of
<br /> 50.5 f nth of 50.5 fee,'
<br /> eet bgs, The
<br /> eet bgs. Gra screened interval rifling, completed a dee
<br /> collected from the borehole addepth was far the well was installed a monitoring
<br /> measured ata g Well, Mir_
<br /> of concern {BTEX ePths of 43.5 feet and pfeet for aboraro approximately 40 5 to
<br /> TPII-G, proximately feet bgs. Two soil sa
<br /> MW-9,
<br /> Laboratory and MTBE) were detected in the soil abort laboratory analyses
<br /> mples were
<br /> Of the ry analytical results of a Y None of the
<br /> analytes of conceal {BTEX groundwater s samples collected analytes
<br /> With the exception of , TPH-G ample collected from MW_ rom the borehole of
<br /> F"indin s— MTBF, Which , and selected gasoline o 9 indicated that none
<br /> g Lateral Ment o was detected at a co xYgerlatesladdztives
<br /> source of the petroleum h Graundyvrrter Cantami nCentation of l4 ) Were detect
<br /> quarterly groundwater hydrocarbon nation dated June Of kms• In the Final Re '
<br /> the fuel island, and that no rem dial action amination had , 2002 port of
<br /> g continue not been identified arld CQnCluded that the
<br /> be taken atltlo al monstorin
<br /> g well and recommended that
<br /> an September 26 site be installed directly 2(}02, a representative of until the source was identified. yeast of
<br /> groundwater samples at monitoring as onsite to
<br /> monitorin Condor w
<br /> g event. Morlitor7n g wells MW_2 throe measure water levels
<br /> were dry,Mr. Jeffre g wells MW-4, IVIV through MW_} for the third d collect
<br /> Y Wong Of SJ 5, and MVV 6 were quarter 2002
<br /> CERL was onsite to Observe a hots Y silted,and M °undwater
<br /> At the request of the SJCE� Portion of the field activitieand s, MW-5
<br /> MW-5, and MW_6 , a Condor representative
<br /> consisted of °n September 27was onsite to redevelop flushing the wells , 2002 The redevelop
<br /> sediment removed with Potable 'nent procedure a p morrit° W wells MW_45
<br /> sand. The redevelo from the wells consisted of Med' and then bailie PPlld r° MW-4
<br /> casin s pment activities failed to si um to coarse-grained,
<br /> the water from the
<br /> and ltcf W_5
<br /> casing,;; cansequent2y, redevelo l7nificant2 2Pained, well_rounded Fells. The
<br /> observations, it appeared Pment afMW. Y reduce the , and well-sorted
<br /> infiltrate inside the casings,the casings
<br /> amount of sediment inside
<br /> gs Of these wellsd MW_5 was not successful. the well
<br /> sediment from inside gs. MW-6 was success are damaged an Based on Condor'
<br /> MW-6 the well c fi121y redeve2o d allowing the annular sand s field
<br /> on September 30 casing g groundwater ped by rernovinPack to
<br /> hydrocarbons were observed Q02, sample Was y c011ected for laboratorysignificant aunt of the
<br /> No floating product, sheen
<br /> groundwater monitorin oily of the wells s or odors associated1talYses from
<br /> amount of suspended sedirrlent. All of the pled durin
<br /> site on S Laboratorygroundwater rnonitarin g the third quarter 2002 petroleum
<br /> selected asoli er 26 and 30, 2002, indicated that noranalytical resolts for the
<br /> Wells sa a siquarterly
<br /> gasoline ox meted captained
<br /> in the Ygenates/additives groundwater samples Collected
<br /> at the
<br /> groundwater sa j were detected at Oabove he bo ato at the
<br /> graurtdyyater water
<br /> mPfes collected from concern (BTEX, TPH-G
<br /> groundwater sartZplec collected rot MW-3' MW laboratory reported detection limits
<br /> MW-I, A4W-2, MW 7 and MW-S. MTBE
<br /> September 26, 2002 , and 11�W_9 was detected in the
<br /> generally indicated!a-1 and AM-7. Static water level TAME was detected in the
<br /> groundwater flow direction to the s uthfs uth encs collected on
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