_GENERAL DOCUMENTS - C1981017 ‎(253)‎

• Permit No: C1981017
• IBM Index Class Name: GENERAL DOCUMENTS
• Doc Name: Bid Documents ‎(IMP)‎ 1994 Correspondence
• Permit Index Doc Type: General Correspondence
• Media Type: D
• Archive: No

SENT BY: 12-11-94 ; 8:36PM 0 S Nf- 505 76b2UU6-;� 1/ 2
MIpCONTINENT_�INE
LOWER DUTCH CREEK STREAM CHANNEL RECON8TRUCTI�
WESTERK SUPPORT CENTER DESIGN EFFORT REOUIRzMENTS AND
ESTIMATED ON-THE-GROUND COSTS
At the Midcontinent mine near Redstone, CO, two segments of lower
Dutch Creek near the facilities area require substantial
reclamation in order to function acceptably for the long term and
to meet OSM,s minimum Title V requirements. This short outline
explains in simplest terms: 1) the effort that OSM must undertake
in order to design the reclamation specifications and provide the
state of Colorado a "bid package. " ; and 2) the estimated cost to
complete the on-the-ground stream channel reclamation.
Regarding item 1) above, OSM personnel would need to:
A) make one or two one-week site visits between late April and
early June, 1995 (hydrologist, ecologist, soil scientist) to:
1) . Survey the lower facilities area, including lower Dutch
creek and Coal creek. GPS surveying equipment will likely
be required;
2) . Target and measure specific local rock sources to line
the reconstructed stream channel;
3) . Evaluate local vegetation, soil and stream channels in
order to make the reclamation plan "site-compatible" ;
B) input survey data into earthVision software (TIPS reclamation
specialist) ;
C) create surface models of the exsisting and proposed land
surface near the facilities area, and refine volumetric estimates
(TIPS reclamation specialist) ; and
D) generate design specifications (TIPS reclamation specialist
and individual discipline experts) :
1) existing and proposed topography, soils and vegetation
maps;
2) cross-sections of existing and proposed topography;
3) channel hydraulic/geomorphic design specifications.
Regarding item 2) from the opening paragraph, an estimated cost
for the on-the-ground reclamation work is attached. Please
understand that the proposed costs are the best estimates from
our currently available information and could be subject to a
dramatic change, depending on the field investigations. It is
considered more likely that the reclamation costs will be ess
than the attached costs rather than more.