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Geolog ka(Technics Inc. <br /> 2741 Qui r Road <br /> hWderto (a&fomra 95351 <br /> (209)538 642VTa c#538-5852 <br /> r+ <br /> Report <br /> ' Soil Boring & Monitoring Well Installation <br /> J.M. Equipment Company <br /> 1245 West Charter Way <br /> Stockton, California <br /> Pioject No 507 2 <br /> July 5, 2001 <br /> 1.0 INTRODUCTION <br /> J M Equipment Company received a letter on November 1, 1996 from Mi Joel Weiss of <br /> the California Regional Water Quality Control Board - Central Valley Region The letter <br /> refeienced a report prepared by William J Hunter & Associates for Independent trucking <br /> Facility located east of J M Equipment at 1145 West Charter Way, Stockton, CA This <br /> report dated October 21, 1996, titled Interun Report Covering Soil and Groundwater <br /> Investigation, included information from MW-9, a groundwater monitoring well placed on <br /> J M Equipment property for the purposes of defining the gi oundwater plume in an <br /> ' upgradient direction — see Figures i & 2 <br /> Historical research was performed to determine possible sources of the gasoline range <br /> petroleum hydrocarbons found in MW-9 It was discovered that years ago this facility <br /> contained two underground storage tanks (UST's) and two aboveground fuel storage tanks <br /> (AST's) These tanks contained both gasoline and diesel The preliminary data from MW-9 <br /> suggests that only the gasoline tanks released fuel <br /> Facility photographs document that these tanks were located near the southeast corner of the <br /> Hesston Shop County assessor records show that this shop was constructed in 1988 and to <br /> the best of facility employees' recollection, the UST's were removed in the early 1980's <br /> For a period of seveia] years J M Equipment used just AST's The UST's were in the size <br /> range of 500 to 1,000 gallons and the AST's appeal to be less then 500 gallons each <br /> Prior to the early 1970's Crandle operated a John Deere facility on this property In the <br /> early 1970's Quimby purchased the property from Crandle and operated J M Equipment <br /> which is an equipment sales and service business In 1991 the property was transferred <br />' from Quimby to Geo Corp Appatently the tanks were installed during the time Quimby <br /> operated a John Deer facility and J M Equipment continued to operate them until they were <br /> removed <br /> 10 In Api tl, 1999, responsibility for the adjacent independent trucking facility monitoring wells <br /> MW-1, MW-2, MW-3, MW-8 and MW-9 were transferred to J M Equipment GTI also <br /> completed site investigation work which included the installation of three additional <br />