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Logan Wash Mine TR No. 7 <br />1.0 Introduction <br />This technical revision (TR) has been prepared to present proposed changes to the original Logan <br />Wash Mine Permit M77-424 (Exhibit E and F, Reclamation Plan and Map or "Plan"), <br />specifically with regard to harrowing of soil from previously affected areas to be used for <br />revegetation at selected areas at Logan Wash Mine. The original Plan was prepared in 1978 and <br />updated in 1981. Technical Revision No. 4, submitted in February 2004, addressed multiple <br />revisions to the Plan. TR No. 4 specified that revegetation work on mine benches and roads <br />would be conducted by scarifying, seeding, and mulching directly on the these surfaces without <br />the application of soil amendments. The results of revegetation test plots conducted since <br />submittal of TR No. 4 indicate that revegetation attempts innon-amended material has limited <br />success and that successful revegetation leading to relinquishment of the permit in a reasonable <br />time period would require soil amendments on the road and bench areas. The purpose of this TR <br />is to describe the plan to barrow topsoil and subsoils and the amendment and reclamation of <br />selected affected areas with the harrowed soils at the Logan Wash Mine. <br />This TR presents background information in Section 2.0, barrow location and methods in Section <br />3.0, and reclamation activities in Section 4.0. <br />2.0 Background Information <br />On June 15`h, 2005 WWL submitted a request to DMG to approve proposed areas for soil <br />harrowing within or in the vicinity of the Logan Wash Mine permit area for the purposes of <br />providing soi] amendments to selected affected surfaces at the mine. DMG responded on July <br />12th, 2005, stating that Area No. 1, NE1/4 NE1/4 Section 25, T7S, R97W, was acceptable for soil <br />harrowing and could be administered by submitting a technical revision to the permit. <br />As shown in the mine permit, the NEI/4 NEI/4 Section 25 was defined as an affected area, <br />however,A all of the NE1/4 NE1/4 Section 25 was not disturbed or developed during mining <br />operations. <br />3.0 Barrow Area <br />The area to be disturbed includes approximately 2 acres in the northern portion of NEl/4 NEI/4 <br />Section 25 T7S, R97W immediately north of the main Logan Wash Road. The anticipated azea <br />to be disturbed is shown in Attachment A. The barrow area will not extend into Section 19. <br />This terrain forms the head of a small broad drainage. Soil is expected to be harrowed from an <br />elongate area subpazallel to Logan Wash Road within the axis and on the east and west flanks of <br />the shallow, vegetated drainage. It is anticipated that 3,000 to 6,000 cubic yards of soil will be <br />harrowed from this azea. The soil will be used to amend the affected azeas of the Upper Bench, <br />Upper Bench Road, and the upper portion of the Lower Access Road (that portion that received <br />debris flow material from the lower dump). If sufficient soil is available, portions of the Lower <br />Bench and the upper slope of the Research Mine Bench will also be amended. <br />Western Water 8 Land, Int. <br />