REP40301

• Permit No: C1981023
• IBM Index Class Name: Report
• Doc Date: 12/11/2001
• Doc Name: HYDROLOGIC MONITORING ANNUAL REPORT 1987
• Permit Index Doc Type: HYDROLOGY REPORT
• Media Type: D
• Archive: No

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INTRODUCTION
' In October 1980, Chimney Rock Coal began a hydrologic
sampling program. The program involves sampling the various
chemical and physical constituents at numerous surface and ground
water stations. The mine site is located approximately 20 miles
southwest of Pagosa Springs, Colorado on Highway 151. The mine
facilities are situated adjacent to Stollsteimer Creek which is a
perennial stream draining the area. Stollsteimer Creek flows to
' the southwest into the Piedra River which is a tributary of the
San Juan and Colorado Rivers, respectively.
' The objectives of this program are designed to gather
information on both surface and ground water regimes and to assess
the impacts of mining activities on the existing hydrologic
balance. To this end, monthly samplings have been conducted to
' assess surface water flow and ground water movement. Water
chemistry has also been analyzed on a quarterly basis at both
surface and ground water stations.
' Sampling locations which have been utilized during the
program are presented on Map 6R1, Regional Hydrology.
' Descriptions of each station are presented below.
5-1 Surface water station located on Stollsteimer Creek 1/4
' mile above the mine facilities. The station was
selected to assess baseline conditions of stream quality
and flow above mining facilities.
I S-2 Surface water station located on Stollsteimer Creek
below the surface facilities and mining activities
I conducted on the Barren Ridge Area and above the inlet
of the sedimentation ponds which control site runoff
from the Revision Area No.l. The station was selected
I to assess effects of surface operations on stream
quality and flow.
S-3 Surface water station located on Stollsteimer Creek one
mile below all mining activities. The station was
selected to assess the overall effects of mining on
stream quality and flow.
DC-1 Deep Creek surface water station located on Deep Creek
at Highway 151. The station was selected to assess
overall effects of mining in Revision Area No. 2 located
in the Deep Creek drainage.