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Gillies Trucking • -4- • May 21, 2008 <br /> Claim No. 1129 <br /> C. Groundwater Trends: <br /> • TPH-D trends are shown below <br /> Claim 1129 <br /> Source Area Well <br /> 40000 - - - <br /> 35000 <br /> 30000 <br /> 25000 <br /> p 20000 <br /> = 15000 <br /> � 10000 <br /> 5000 <br /> 0 PSI <br /> O 0 0 0 O O O O O o o O r <br /> 0 0 <br /> `o <br /> Time <br /> Claim 1129 <br /> Downgradient Wells <br /> 2000 - <br /> 1500 - — - <br /> - <br /> p 1000 <br /> x }}�� <br /> H 500 --- --- —L _ GT-6 <br /> 0 —� — / <br /> N N M M ar 7 u] N (O CO r <br /> O O O O O O O O O O O O O <br /> N C N N N N l0 <br /> Time <br /> VII. SENSITIVE RECEPTOR SURVEY: 13 wells identified within Yz mile of the site, <br /> onsite well has contained up to 3,300 ug/I of TPH-D. <br /> VIII. COMMENTS AND JUSTIFICATION FOR RECOMMENDED ACTION <br /> A. Site Description: trucking facility <br /> B. Site History: the extent of groundwater contamination is largely defined <br /> C. Groundwater Monitoring Summary: poor to moderate monitoring history <br /> D. Remediation Summary: excavation only <br /> California En vironmental Protection Agency <br /> Z,*Recyded Paper <br />