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Table 4 <br /> Second Semester 2006 Vadose Zone Soil Gas <br /> Foothill Sanitary Landfill <br /> Highest <br /> Concentration <br /> Methane Number of Found VOC of Highest <br /> Soil Gas Well Content (%) Compounds PPB (v/v) Concentration <br /> SG-1 0.0 22 110 Ethanol <br /> _ ......._-_........._._.._..._._._ ---.-- <br /> SG-2 0.0 26 340 Ethanol <br /> _ SG-3 -- 0 - 29 --410 Freon 12 ---'-��- <br /> ___..........-..............-...... <br /> _._......--- -- - - --- - - ----- <br /> SG-4 0 26 160 Ethanol <br /> SG-50 21 140 Ethanol <br /> SG-6 0 29 530 Freon 12 <br /> SG-7 0 23 120 Ethanol <br /> --__....._........... _ --._-_._ -_...._...._.._._........___ <br /> SG-8 - -_ 0 26 270 Freon 12 <br /> __-...._................___._...__._ ........----...... <br /> .- -- <br /> SG-9 0 25 98 Ethanol <br /> - ._..._......._ <br /> ..................._...-..__..__.._...__._._.._....._...- ------- ___..........._.._............_....- ---- ----- <br /> ____._.._..._._....----.---..._._...._............._... ....._.._............ --.. -__ .__.._.._____...._- _._..`..._...._................................ <br /> SG-10 0 28 420 Freon 12 <br /> _......---...__._.._._....._..._._........-- ..-................._ �_ -_ _.................. <br /> _._....._....- - <br /> SG-11 2.6 .._...........___ 30 840 Freon 12 <br /> ----._...---- _......_. .----....__._...............-. ._..__._._..._ ... - __ --- _._............-..._... <br /> SG-T 23.1--- 343,900 --- Freon 12 <br /> - -- ....--- <br /> ..................._.....-------._.............................-- ..._............._........._........................._.... ...............--._._.._..--.............._._................._...I---- <br /> ND= Not Detected <br /> Sampling Date: 11-29-06 and 11-30-06 <br /> Foothill Sanitary Landfill 13 Department of Public Works/Solid Waste <br /> 2nd Semester Groundwater Monitoring County of San Joaquin—January 31,2007 <br />