Laserfiche WebLink
TABLE 1 <br /> SITE CHRONOLOGY <br /> STOCKTON GRAIN ELEVATOR <br /> ' CONTIGROUP <br /> Date Activity Consultant <br /> Jan-88 UST Removal <br /> Oct-97 SB-1 thru SB-6 advanced and soil and groundwater samples <br /> collected ATC <br /> Nov-97 Subsurface investigation Report Submitted ATC <br /> IAug-98 Additional soil borings,installation of MW-1 thru MW-3, <br /> samples collected ATC <br /> Aug-98 thru <br /> June-02 Quarterly sampling&monitoring reports ATC <br /> Oct-98 Update of Subsurface Investigation ATC <br /> MW-4 thru MW-6 installed, SB-8 thru SB-12 advanced, <br /> ' Apr/Jun-00 samples collected ATC <br /> June-02 CAP submitted ATC <br /> 10 May thru Site Investigation Report, Installation of MW-7 and <br /> June-04 additional soil borings, sampling H&A <br /> Aug-04 Work Plan for CAP submitted and quarterly sampling <br /> continued Geomatrix <br /> Oct-04 CAP submitted Gcomatnx <br /> Tlus Addendum specifically addresses only the.area at and immediately adjacent to the excavation for <br /> the former 10,000-gallon UST The term "site" used subsequently throughout the remainder of this <br /> document therefore refers only to the area ofthe former 10,0.00-gallon UST <br /> 3. SITE CONDITIONS <br /> The discussion of the occurrence and distribution of petroleum hydrocarbon detections reported for soil <br /> Th p Y � <br /> and groundwater samples at the site, as summarized in this CAP addendum, are based on the results of <br /> the previous investigations Reported detections are based on analyses of total petroleum hydrocarbon <br /> (TPH) in either the diesel (TPHd) or gasoline (TPHg) range and for related constituents (e g, BTEX) <br /> An evaluation of the potential risks to drmlang water, surface water, and human health from related <br /> conditions at the site was discussed in the October 2004 CAP Tlus discussion has been revised to <br /> describe the source area compared to the limits of the TPH plume <br /> 4 <br /> R%CONTGRAN\Stockton\CAP\CAP ADDENDUM <br />