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r <br /> Amw <br /> case . The lateral extent of the release has not yet been defined <br /> as it should be and a Problem Assessment Report (PAR) has not <br /> been submitted to PHS-EHD as required by the Soil and Groundwater <br /> Investigation Phase of the Corrective Action Regulations and Tri- <br /> Regional Guidelines . <br /> PHS-EHD will accept interim corrective action work plans as an <br /> emergency action that will provide for a reduction of off-site <br /> contaminate migration, but feels that this is not the intention <br /> of this workplan. Your proposal to install as many as thirty <br /> (30) on site wells cannot be considered an emergency or interim <br /> remedial action and PHS-EHD would rather you direct your efforts <br /> to defining the lateral extent of your soil and groundwater <br /> plume . <br /> If you desire to conduct soil vapor tests, air sparging <br /> possibilities, or over-excavate on site soil contamination, PHS- <br /> EHD will review those work-plans as they are submitted. <br /> In order to have Terra Vac work on your site in the future, <br /> please have them submit a Statement of Qualifications and return <br /> the California Licensed Contractor information form to PHS-EHD. <br /> Please direct your questions, concerns, and submittals to Michael <br /> Infurna at (209) 468-3454 . <br /> Donna Heran, REHS, Director <br /> Environmental Health Division <br /> Michael Infurna, nior REHS Diane*Hinson,Hinson, REHS <br /> Site Mitigation Unit Supervisor <br /> MI/ <br /> enclosure <br /> c: Terra Vac - Tim Warner <br /> c : CVRWQCB - E. Thayer <br /> c : SWRCB Cleanup Fund - L. Bracco <br />