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US TOEROEK <br /> ASSOCIATES,INC. <br /> SOP Revision History <br /> The Toeroek Quality Manager is responsible for maintaining previous versions of the document. <br /> History Effective Date <br /> Current Version: <br /> SOP No. 004, Soil Sampling June 28, 2022 <br /> Revision 2, 16 pages <br /> NOTES:Addition of QA/QC procedures in Rev. I <br /> Reviewed—no changes May 1, 2016 <br /> Reviewed—updated logo and pagination(Rev 2) June 28, 2022 <br /> Previous Version: <br /> Previous Versions are electronic des that are archived <br /> SOP No. 004, Soil Sampling November 28, 2012 <br /> Revision 0, 15 pages <br /> SOP No. 004, Soil Sampling May 14, 2014 <br /> Revision 1, 16 pages <br />