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ENVIRONMENTAL HEALTH DIVISION <br /> 304 E. Weber Ave. Third Floor <br /> R O. Box 388, Stockton CA 95201-0388 <br /> Approved [}/ <br /> Denied <br /> 1�/Conditions 5�E �IF.LOt� <br /> Date C)911 by <br /> ( . M 01TV1 <br /> Ce4rgAl- Cpl T �t/pts {�G�t L]�f� Geological Inc. <br /> 2,41 T9-f <br /> xudero,CW 9s>5! <br /> (I.+vQUt2�M L�ilti"1Z � D 5Yo12Jfglk598SB52 <br /> HULA Ial IOM')-f U-Vi5c"D AV4J�r Work Plan <br /> Sol (AAS t pt2&5alzl& 0z <br /> Soil and Groundwater Investigation <br /> Fiore Development <br /> p ��. 2001 N.Main <br /> �( Manteca,CA <br /> Project No.562.2 <br /> 4fhmP 1� j pltu' "t5E A Y January 5,1998 <br /> 1.0 INTRODUCTION <br /> In 1992 one 10.000 gallon unleaded gasoline underground storage tank was removed from <br /> TA7,ne the site. Some residual contamination is suspected in the soil and possibly the groundwater. <br /> rJ ( r I f On May 7, 1997 Fiore Development was directed by San Joaquin County Environmental <br /> fD� Health Department to submit a work plan to determine if residual soil or groundwater <br /> D , p contamination exists beneath the former tank. <br /> L�lm 71-j S t1 -t/ 'N Geological Technics Inc.was contracted by Mr.Fiore on December 1,1 997 to perform the <br /> W A-TC(1, x01 L soil and groundwater investigation described in this work plan. <br /> Mac- f <br /> 2.0 PROPOSED INVESTIGATION <br /> ma ' (4)IL to H)/ <br /> 1 P To fiuther investigate the possibility of soil and groundwater impacted with gasoline range f <br /> petroleum hydrocarbons, Geological Technics Inc. proposes to install one GeoProbe 4 <br /> 1�1Y1G borehole, collect soil and groundwater samples and test these samples for petroleum <br /> f n j� hydrocarbons. <br /> IAF+ d /r� t V u5'^J 2.1 GeoProbe/Hydropunch Survey <br /> Soil Core Sampling <br /> One GeoProbe borehole will be drilled through the former tank excavation. Soil samples will <br /> be collected at five foot intervals down to the capillary fringe. The expected depth to <br /> groundwater is 20 to 25 feet below ground surface(bgs). Upon reaching the capillary fringe <br /> a hydropunch type sampling tool will be advanced into the groundwater and a groundwater <br /> A Q P sample will be collected. 4 <br /> L Ctw l�� The borehole will be drilled with a GeoProbe rig owned and operated by V&W Drilling of <br /> 6i6 Tb Rio Vista, CA (C57# 720904). The GeoProbe advances a coring tool with a pneumatic ! <br /> hammer to a selected depth. Upon reaching that depth the coring tool is opened and <br /> advanced further to till the core barrel. The soil sample enters an acetate cylinder contained <br /> 3 COIVCI�� /�?fi� Ta 5*u. G1,2�UrI/h tVX�I5^p. t <br /> v/014Gtt€D <br /> 'J b'11KtYW57 hl; 011T5stti PtK�FF� Nt�" � Qola ( o <br /> S�� mi>✓�c,�c,� s�F. I�l�g•032 <br /> I <br /> 4 M QGC F0,0M 6Yw %/v j t L(" <br /> UTND(AGtLc UMTS <br /> j <br /> i <br />