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2008-02-27_REPORT - C1981008
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2008-02-27_REPORT - C1981008
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Last modified
8/24/2016 3:23:35 PM
Creation date
2/28/2008 2:05:39 PM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
C1981008
IBM Index Class Name
REPORT
Doc Date
2/27/2008
Doc Name
2007 Annual Reclamation Report
From
Western Fuels-Colorado
To
DRMS
Permit Index Doc Type
Annual Reclamation Report
Media Type
D
Archive
No
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2007 ANNUAL RECLAMATION REPORT <br />• NH1 <br />Farming by adjacent landowners continued as in past years on the 6.4 ac field in the NW <br />portion of the NH1 Permit Area. The landowner was contacted and stated that a 50/50 mix <br />of fertilizers 18-46-0 and 34-0-0 (UREA) were applied at a rate of 200 Ibs/acre. One cutting <br />was harvested for approximately 10 tons (3,1251bs/acre) of grass hay. Western Fuels did <br />not applied fertilizer to a 45.65 acres parcel due to interseeding in the fall of 2006. Exhibit <br />2007-1 shows fertilizer application rates and locations as well as production. Exhibit 2007-1 <br />denotes pasturf; yields where applicable. For reference, Exhibit 2007-2 shows the pre- <br />1993 disturbanc:e at NH1. Please note that the NH1 boundary changed in 2001 as a result <br />of MR-52. <br />NH2 <br />Existing Disturbance <br />During 2007, 58.6 acres of new disturbance were associated with the mining program at <br />the New Horizon 2 Mine. 62.2 acres of topsoiled land were seeded with approved seed <br />mixes. The 2007 Disturbance and Seeding Maps, Exhibit 2007-3 and 2007-4, respectively <br />show the areas either disturbed, seeded, or reseeded, during 2007. A total of 22.4 acres <br />were topsoiled and 17.3 acres were retopsoiled, this is detailed in Exhibit 2007-6. <br />• Backfilling and Grading <br />During 2007, 1!x.6 acres (see Exhibit 2007-7) were graded at New Horizon 2. Backfill <br />grading was accomplished by backfilling the empty pit with atruck-shovel fleet and then <br />final grading with D-9 dozers and 14G grader. <br />Soil and Spoil ~~carification <br />The following soil and spoil scarification techniques were used while grading the <br />reclamation arE:a. Prior to growth media soil replacement, the final graded spoil was <br />scarified to a depth of 6 to 18 inches using ripper shanks attached behind a motor grader <br />or a dozer. This scarifying operation effectively reduced compaction, runoff, improved <br />infiltration, and improving rooting depths. <br />Soil and Spoil Monitoring Data <br />New Horizon Mine is required by Permit C-81-008 to monitor replaced soil and final graded <br />spoil and submit the information to the Division. Monitoring programs include verifying soil <br />replacement thickness and determining final graded spoil quality. Exhibit 2007-6 depicts <br />topsoil thickness and sample locations. Exhibit 2007-7 depicts backfill spoil sample <br />locations and shows backfill placement limits. <br />Spoil Quality <br />The spoil samplling and analysis program approved for New Horizon Mine is described in <br />Section 2.05.4(2)(d)-6 Regraded Spoil Monitoring Program of Permit C-81-008. Five (5) <br />. topsoil samples and two (2) backfill spoil samples for 2007 were collected from within the <br />New Horizon 2 area. The soil samples were collected by a hand auger. Each backfill <br />sample site consists of two subsurface samples; one is a 0 to -2 ft interval, the other a -2ft <br />to -4 ft intervals. Sample identifiers are given the suffix A and B, respectively. <br />F:\Eng\DATA\Word\.~nn Reclaim Report\2007\2007RECRPT.doc 1 <br />
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