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TGEO-FNGlNEERS , rax( eeA-cr3i� <br /> = �� . ,s (916)) 6 668-5300 <br /> CALffs TR <br /> CONACTOR 11513857 A COR-MiAliO1Y" <br /> REGMTOtM oir0[.0G= =�=_� -: All 11 03 <br /> WOA27LAN FOR DEFINrNG TAE VERTIC:4L LIMITS <br /> 0FS0IL,42YD GROUNDWATER CONTAAOV 77ONATSANCHEZPROPL'RTY, <br /> 1876 COUNTRY CL UB BLVD,STOCTTON,C4 <br /> FEBRU,4RY3,1998 <br /> PIMPOSE AND SORE <br /> WEGE (Western Geo.Engincets) was co uw=d by W. and Mrs Manuel Sanchez to <br /> prepare a workplan for defining she vertical hmrts of soil and p=i4 woes contamination i <br /> at she former gasoline underground stnmage reale(UST)site located at 1876 Country Club <br /> Blvd.,Stockton,CA. The Sea Joagsun County Ew.==eatal Health Division requested <br /> the prrparsuon of tho workplan in a lc=to Mn and Mrs S=hcz dated October 21. <br /> 1997 <br /> 3 <br /> pREVIOUS <br /> I <br /> WORK AT JIM SUE <br /> The cerufied analytical laboratory results from soil samples calkcted from seven strain <br /> Probe test holes and five monster wells have paraally estabhshed the lateral and verCcal <br /> extent of soil contan=umon at the ace. The deepest sort sample from the site that was <br /> analyzed by a certified iaborawry was collected from 26 feet below ground surface(bgs) <br /> at SP.g, located between the two product dispenser IslarEds This sample did not contain <br /> TPH-G or BTEX aonsttruents above the laboratory dcw=on limits Soil samples <br /> collected iron 16 feet bgs and 21 feet bgs at the Same test We showed TPH-G <br /> conc===ons of 14,000 and 2,000 mg/kg tsspeaavely These samples contained the <br /> highest TPH-G cwncaananons in soil observed at the site. <br /> The five monuor wells at the site are scrscad to a maximum depth of 34 fact bgs at <br /> MWZ. <br /> no San Joaquin Conary MM noted m their[error dated October 21, 1997 that historical : <br /> drought groundwater elevations may have camdd to 40&a bgs tit the site viciarty and <br /> raised the possihUty that signtfiowdy high levels of soil coammraation may remain <br /> Wow the c=ent tap of gcoundwarer at those depths. In order to v=fy if those <br /> conditions existed at the sate they tequucd that soil and groundwater samples be collected <br /> at these historical drought groimdwater elevations. <br /> - SAPS JOAQUIN COUNTY <br /> ENVIRONMENTAL HEALTH DIVISION <br /> 304 E.Weber Ave.CA it Floor 88 <br /> P.O.Box 388, Stockton, <br /> 1 Phone: (249)458.3424 <br /> oved <br /> Approved with changes: See Remarks <br /> Disapprove See Remarks ,� J <br /> Y� <br /> Date Bi Jim <br /> Approval of these plans exten s only to that <br /> W <br /> is shown and described hereon but <br /> does not authorize or approve any omission <br /> . or deviation of requirements of State laws or <br /> Local Ordinances. <br /> Z d W08A wdEF- a 86s t-60—z <br />