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REP46990
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REP46990
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Entry Properties
Last modified
8/25/2016 12:50:25 AM
Creation date
11/27/2007 11:38:10 AM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
C1981008
IBM Index Class Name
Report
Doc Date
2/24/2000
Doc Name
1999 Annual Reclamation Report
Permit Index Doc Type
ANNUAL RECLAMATION REPORT
Media Type
D
Archive
No
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The spoil sampling and analysis progratn approved for New Horizon Mine is described itt <br />• Section 2.06.4(2)(d)-4 Reeraded Spoil Monitoring Program of Permit C-81-008. Backfill spoil <br />samples for 1999 were collected from four sites in the New Horizon 2 area. Samples were <br />collected tiom the sidewalls of four foot deep pit that was excavated with a rubber tired backhoe <br />or ti•om n 4 foot deep soil auger hole. All spoil samples were shipped to Servi-Tech Laboratories <br />in Hastings, NE for analysis. <br />The location of each spoil pit is shown on Exhibit 99.7, Backfill Sampling Location Map. <br />Laboratory results for the four spoil samples are presented in Attaclunent 99.A. The analytical <br />results indicate all spoil is suitable. No additional grading, special handling, or amendment <br />application was needed prior to soil replacement. <br />Soil Redistribution <br />The topsoil that was used for redistribution was live handled from ahead of the active mining <br />area to the awaiting backfill area. Phase X and XI topsoil campaigns was done during Spring <br />1999 and late Fall 1999, respectively . A total of 127,748 loose cubic yards were moved. <br />Soil Thickness <br />The thickness of soil replaced during 1999 was verified by sampling. Sample sites for [he New <br />Horizon 2 mining area were selected systematically utilizing a 467 toot by 467 foot grid pattern. <br />Sites at New Horizon 2 were determined from CAD drawings using distances and azimuths from <br />established survey points and located in the field by a Chainman II distance meter and a Brunton <br />• compass. <br />A 2-3/4 inch bucket auger was used at each site to excavate a pilot hole through the entire soil <br />strata. An abrupt boundary, defined by color and rock fragment content, typically occurred at the <br />soil/spoil interface. The replaced soil thickness was measured through the pilot hole <br />immediately after encountering the spoil. <br />Soil thickness was determined at the eight sites at NH2 shown on Exhibit 99.6. Soil thiclutess <br />information for each sample site is located on the map. <br />New Horizon 2 has many different soil thickness requirements as shown on Exhibit 99.8, which <br />is in section 2.05.4-4 of the current permit. <br />Soil Salvaae and Storaee <br />All suitable soil has been salvaged ahead of mining at New Horizon 2. Approximately 77,368 <br />(LIFT ?), 18,391 (LIFT 1), and 52,487 (MIXED) cubic yards of soil are stored in stockpiles at <br />the end of 1999 as shown on Exhibit 99.10 (1999 Topsoil Balance Map). The soils were <br />separately stockpiled by soil types as specified by our permit. <br />Cover Croo <br />All topsoil stockpiles have been planted with the approved cover crop seed mixture. <br />• (d: \data \wpda to\rec-repo\99recrepo.docl <br />
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