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U TOEROEK <br /> ASSOCIATES,INC. <br /> SOP Revision History <br /> The Toeroek Quality Manager is responsible for maintaining previous versions of the <br /> document. <br /> History Effective Date <br /> Current Version: <br /> SOP No. 026, Indoor Air and Sub-Slab Soil Gas Sampling <br /> Methods February 14, 2018 <br /> Revision 0, 25 pages <br /> NOTES: <br /> QA Reviewed - minor changes February 12, 2018 <br /> Reviewed-(technical edits; logo and pagination update December 12, 2023 <br /> Rev 1 <br /> Previous Version: <br /> Not applicable <br />