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ntbrhinafion. <br /> :until future remediation or t3f asl after <br /> It is proposed that sampling using a, ackhoe or excavator ' h an achievable depth of <br /> 20 FT proceed as soon as possible. is s two day activity will be <br /> accomplished during clear weather in the accessible ( surface treated) yard area. <br /> Samples will be collected in 100-250 ml glass jars with Teflon seals, labeled and <br /> transferred to Sequoia Analytical Laboratory for TPHdiese, analysis. Soil classification <br /> and lithology determination to the excavation depth limit will be performed under <br /> the direct supervision of a California registered Civil Engineer or Geologist as <br /> �(p necessary. Excavated soil will be either returned to the excavation pit, or <br /> V f stockpiled nearby, and covered <br /> a�5 pending laboratory analysis. Upon profiling <br /> excavated soil it may be either retained for remediation or disposed off site at a <br /> `,suitable landfill. The test hole will be back filled with clean soil with field <br /> � V,q"p �ticompaction to approximately 80% to within 2 FT of the surface. Remaining fill to <br /> - 1L�7t9tc�rai3 -wi a mpac e o o ro-P mor reTa�ive ensity. <br /> h <br /> Photo Ionization Device (PID) will be used during the process to examine <br /> d eadspace in a "baggie" to make a rough determination of degree of contamination <br /> ok and possible hazardous levels of hydrocarbons in the soil . <br /> I will notify you at time of sampling and appreciate your oversight. I understand that <br /> for the shallow excavation pits no drilling permit is required, nor field observation of <br /> backfilling as in the case of test wells. <br /> Please contact me at (530) 823-2156 if you have any questions or recommendations <br /> to the proposed work plan contained in this addendum. <br /> Sincerely, <br /> K. <br /> - ; <br /> iel K. Ba r P.E. <br /> Barber P.E. &As <br /> D.K. dates <br /> Cc: 1 copy via FedEx to CVRWQCB <br /> Cc: Client WOS <br /> 3 <br />