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X <br /> - <br /> Site:AMsessment.Work•Plan <br /> CHEROKEE TRUCK STOP ' <br /> F 3535 East Cherokee Road,.Stockton,.California.�r r <br /> ... ._ -_ <br /> 1.0. <br /> INTRODUCTION..-. ....- . /. <br /> 7. <br /> At the request of Mr. Ellis Cecchini of Cecchiru,`Cecchini and Glovannoni, and in accordance with .` <br /> lir requirements of the San Joaquin County`Public Hea'lth'Services :Environmental Health Div'isian. - <br /> (PHS-EHI?),Advanced GeoEnvironmental,Iric:'(AGE)_lias:prepared this Site Assessment Workfor the advancement of sdil:borings and- of_soil and ground water at 3x35 East Cherokee - _ <br /> Road, Stockton; California 'The'site settiri 'is'illustrated in Fi ure 1 _- h of the srtezis`illustrated . { <br /> g _ g . p <br /> on Figure 2 <br /> This Work°Plan is prepared in accordance. with PHS..=EHD"and'-Central Valley--Regional;Water:r ' <br /> Quality Control Board (CVRWQCB) guidelines for the investigation of underground storage-jank - <br /> .(UST) sites. x- <br /> .'The purpose of this assessir ent is'to define the'lateral and':vertical.extent of.petroleu,M.hydro6:wbon.: <br /> impact to soil'and ground=water at thf~site This Work Plan provides a description of the scope•bf'-'- <br /> work and field procedures-for the,soil'and:ground water assessment•activities.. <br /> 71 <br /> 2.0. BACKGROUND 41,: F <br /> Thirteen soil borings and five ground water monitoring.wells were installed at the'site between 1990` ' <br /> and 1996-Ground water samples were collected.on 25,'occasions.between September 1090-and. <br /> September 1998.°Impacted-ground.water appears to be,centered-near mionitoririg well, UST-..1: In 3 <br /> September`1997, six USTs-,were removed from`the•sit-e Soil sam les`were <br /> collected beneath'the_ <br /> P <br /> ,• 'USTs, product piping and dispenser locations. Site_hisfory is included ih.the:QuarlerlyReport <br /> . March 1998 prepared by AGE. - <br /> Historic San`Joaquin County-Flood Control:and_W ater.Conservafion Distiict (SJCFC&WCD) <br /> round water data map" were reviewed to determine.historic de th to. "round water at the site. Mas f <br /> g P P g - P <br /> r a : dated 1971, 1.975, 1980, 1,985,1990, 1993-6nd 1996 were:reviewe&Ground water was reported at; . .. <br /> am depth of approximately 88 feet-lielow surface:grade(bsg)-during-1990. Monitoring well <br /> UST-1 was installed at the site.in Septernber.1990.'Ground 'waterwasmeasured at a,depth,of 83.6 <br /> r` -°-feet bsg during the September"1990 sampling event.-'- `-' <br /> Ground water-was measuredat a'maximum'depth of approximately 95xfeet bsg during the August <br /> 1992 sampling.event, the minimum-depth to ground-'.water. of approximately'47 .feet bsg:was <br /> measured•in monitoring wells at the site the Jun-1'998 monitoring event:Groundwater.is ' . .. <br /> ' currently approximately_9 to 28 feet above the screened interval of.wells`UST-1.tlirou h.UST-4 and, <br /> . g <br /> • is near the top of the screened'interval of UST.'5 <br /> __ :Adtanced CeoEn.•ironmenlal,Inc: <br />