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' INTRODUCTION The 1991 Hydrologic Monitoring Annual Report for the Bear Number ' 3 Mine is hereby submitted by Bear Coal Company, Inc. in accordance with the Rules and Regulations of the Colorado Mined Land Reclamation Board (MLR) and pursuant to the Colorado Surface ' Coal Mining Reclamation Act. Bear Number 3 Mine, operated by Bear Coal Company, Inc., is ' located along the North Fork of the Gunnison River approximately 1/4-mile east of Somerset, Colorado, along State Highway 133. Methods of analysis were consistent with EPA standard testing procedures, the parameters of which are presented in Table 1. Field test data was collected quarterly and laboratory test data was collected annually. ~. Drawing 1 shows the locations of the groundwater monitoring points AA-1 and AA-3 and is included as Appendix 3. GROUNDWATER MONITORING ' Water samples were collected at monitoring stations AA-1 and AA-3 using a hand bailer. A YSI (Yellow Springs Instrument) Model #33 was used to measure water quality, temperature, conductivity, and ' salinity in the field. The pH levels were taken using a Cole Palmer Model #5941-00 pH meter. All other parameters were determined by collecting samples in precharged bottles and ' submitting them to ACZ Laboratories, Inc. of Steamboat Springs, Colorado, for analysis. The results of groundwater data collected during 1991 are presented in Appendix 1. Graphs of the pertinent water quality parameters are also shown in that ' appendix. ' SURFACE WATER MONITORING There are no surface monitoring control points within the permit area. ' Quarterly inspection reports of the two sediment control ponds located in the permit area are included as Appendix 2. NPDES forms previously filed with the Colorado Department of Health can also be found in Appendix 2. There was no discharge from either of the sediment control ponds during the 1991 reporting period. 1