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s . <br /> Page 2 of 2 <br /> Soil Gas Probes Permit Application(SV1—SV3) <br /> January 13,2011 (Revised January 21,2011) <br /> or fitted with a vapor inlet filter. Once the tubing is in place, clean sand will be poured around the perforated <br /> section of the tubing. The annulus will be filled with 1 foot of dry bentonite chips and then filled to ground surface <br /> with hydrated bentonite chips to create a seal. Soil gas probe construction is shown in Figure 4. <br /> Sotq Gas Sample Handling Procedures <br /> mmediately at a mobile laboratory. The glass syringes will be kept in a <br /> Soil gas samples collected will be analyzed i <br /> cool dark place at all times. The samples will be wrapped in foil and kept in an insulated container till the samples <br /> are analyzed. The samples will not be subjected to extreme hot or cold temperatures. If condensation is observed, <br /> then the sample will be discarded and new sample collected. <br /> .x�i Duplicate Sampling <br /> The results of the field work utilizing a mobile laboratory will be independently confirmed through the collection <br /> of one duplicate soil gas sample in a 250 ml SutmnaTM canister. This duplicate sample will be analyzed using EPA <br /> Method 8260 in an off-site State-certified Environmental laboratory. The duplicate sample will be collected in an <br /> area where soil gas is suspected to be impacted with VOCs. <br /> Accordingly,Please find enclosed the following items for the above-referenced project: <br /> A copy of the completed permit application for APN#21220008(subject site) " <br /> Acopy of the Well Construction diagram Human HealthltiskAssessment Workplan. <br /> • Acopy of AA&A s Soil Gas Sampling and <br /> • <br /> A copy of the corresponding SJCDEH Approval Letter. <br /> • A check in the amount of$488.00(made out to the San Joaquin County EHD)to cover the permit fees. <br /> Please don't hesitate to contact the undersigned should you have any questions or require anything further. <br /> Sincerely, <br /> Larry Witwer <br /> Sr.Project Manager <br /> Ami Adini&Associates,Inc. <br /> Phone:323-913-4073 <br /> Fax:323-667-2336 <br /> Email:laM fa)amlachm com <br /> Enclosures <br /> Amo Adtn{ <br /> �L&A oGitFc. <br />