PERMFILE67019

• Permit No: C1981038
• IBM Index Class Name: Permit File
• Doc Date: 12/11/2001
• Section_Exhibit Name: Volume 4 Alluvial Valley Floor Appendix & Alluvial Valley Phase I Report
• Media Type: D
• Archive: No

'
In Phase 1, appropriate geomorphic, hydrologic and land use
studies would be performed. The studies should provide MLR
with data sufficient for determining if areas actually qualify
as AVFs. In phase 2, the essential hydrologic functions of
the probable AVF areas would be identified, the impact of
mining on the hydrologic functions would be evaluated, and re-
commendations would be made on how the hydrologic functions
could be restored.
1.3 METHOD OF THE STUDY
i •
I~
Following the approval by CWI of our proposal on Phase 1
of the AVF studies, the geomorphic, hydrologic and land use
studies have been performed. They included a review of all avail-
able material pertinent to the potential AVFs that is in pos-
session of CWI; a study of the aerial photographs of the area;
a review of geologic work performed by others in the area, in
particular the surficial geology mapping performed by W.R. Junge
of Colorado Geological Survey in 1978. Following the office part
of the study, afield mapping program was performed to delineate
and define the alluvium and potential AVFs in the study area.
As a part of the field study, test pits were excavated within
the alluvial areas to investigate the character of the alluvial
deposits.
Data pertinent to land use and farming for both areas of
interest were obtained in interviews with the landowner (Stevens
Gulch) and the manager of CWI's North Fork orchard. Additional
information was obtained in discussion with Mr. L. D. Short,
District Conservationist of the U.S. Soil Conversation Service
in Delta, Colorado.
- 2 -
c,~oHVOao ca+w~n~+c. iNC.