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amec- , <br /> Mr. Dean Hubbard <br /> Regional Water Quality Control Board <br /> February 15, 2011 <br /> Page 4 <br /> REPORT <br /> After analytical results have been received and evaluated, an addendum to the Investigation <br /> Report will be prepared to transmit the results. <br /> SCHEDULE <br /> It is anticipated that investigation activities can commence within 3 weeks of receipt of approval <br /> of this work plan addendum from the Water Board, depending on contractor availability. <br /> Analytical results will be received within 1 week of completion of investigation activities. A report <br /> will be submitted to the Water Board within 6 weeks of receiving analytical results. <br /> Please call either of the undersigned if you have any questions or require any additional <br /> information. <br /> Sincerely yours, <br /> AMEC Geomatrix, Inc. <br /> Jennifer L. Patterson, PE #59161 Gary R. Foote, PG #5044 <br /> Senior Engineer Principal Geologist <br /> jlp/grf/gmb/bfw <br /> X:\14000s\14143.000\4000Wddt'IWP 021511\1 text\Text.docx <br /> Attachments: Figure 1 —Site Location Map <br /> Figure 2 —Site Plan <br /> Figure 3 —Soil Sample Analytical Data —Vicinity of TRY-1 (OU-2) <br /> Figure 4 — Proposed Groundwater Sample Locations — East Area (OU-2) <br /> Figure 5 — Proposed Groundwater Sample Locations —West Area (OU-5) <br /> cc: Tami Trearse, Department of Toxic and Substance Control <br /> James Diel, Union Pacific Rail Road <br /> Scott Davis, ARCADIS <br /> Lee Higgins, Chevrom Environmental Management Company <br />