APPCOR13250

• Permit No: C1983059
• IBM Index Class Name: Application Correspondence
• Doc Name: Proposed Decision Letter & Findings Document
• Media Type: D
• Archive: No

-18-
X. C1lmatological Information and Air Resources - Rules 2.04.8,
2.05.4(2)(h), 2.05.6(1) and 4.17
The required climatological information is presented on page 2.04-12 and
1n Exhibit 6 of the application. The air pollution control plan is
provided on pages 2.05-16 through 2.05-17 of the application. Dust
suppression on roads will be accomp115hed by surfacing with gravel,
periodic watering and regular matntainence. The coal handling facilities
and conveyor will be equipped with a water spray system. The applicant
has obtained an air emissions permit from ,t he Colorado.Department of
Health, Air Quality Control Division.
The operation is in compliance with the requirements of this section.
XI. Topsoil - Rules 2.04.9, 2.05.3(5), 2.05.4(2)(d) and 4.06
Soils resource information is provided on Map 3, page 2.04-13, and in
Exhibit 7 of the application. Information on topsoil salvage and
redistribution 1s found on pages 2.05-4 and 2.05-9, respectively.
The soil type affected by construction of the B acre cut and fill bench
upon which the coal piles and facilities will be located was mapped as
Progresso loam. Samples taken by the applicant prior to disturbance
indicated a clay loam surface horizon approximately 13" thick. The soils
are underlain by coarse rock and gravels of colluvtal origin.
The applicant failed to salvage all available topsoil prior to
construction. Approximately 5,700 yd3, or a 5" depth from the 8 acres
was salvaged. Subsequently an additional 5,300 yd3 has been salvaged
from the 5 acre disturbance associated with the haul/access road
construction. The haul road will provide permanent access to residences
adSacent to the permit area and will not be reclaimed. Thus, a
sufficient volume of soil is available to redistribute a 10" depth of
soil over the regraded slopes upon final reclamation.
In adequacy letters of Apr11 12, and dune 22, 1983, the Division
expressed a concern that the 10" replacement depth might not be
sufficient to restore the agricultural productivity potential that
existed before disturbance, given the fact that the underlying material
would be primarily gravel or rock. This situation is further discussed
in Section IX of this document. The applicant has subsequently submitted
additional information regarding the pre-mine soil conditions (depth,
rock content, water holding capacity and bulk density) and a plan for
restoration of a soil profile capable of supporting pre-disturbance
agricultural productivity levels. This information indicates that there
should be little problem with restoring post-mining productivity to
pre-mining levels.
The operation is in compliance with the requirements of this section.