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Bowie Resources Limited • <br />Bowie No. 1 Mine <br />1997 Annual Hydrology Report <br />measurable flows only in May and November. <br />Tenor Creek <br />Eight springs found within the Terror Creek drainage (refer to Table 1 and Map No. 4-1) were <br />monitored during 1997. Spring and Pond 17 and Spring 1-5, are outside the anticipated extent <br />of mining activity. Spring and Pond 20, Spring and Pond 7-1 were undermined during the East <br />Pod development, panels EP-3 and EP-4. All four of these springs have extensive data collected <br />to characterize the typical hydrology at these sites. However, these locations were identified <br />and targeted by the Division as adjudicated water rights within the permit azea. No adverse <br />mine related impacts or other irregularities were noted at any of these Terror Creek Springs. <br />Monitoring of Springs 7-10, 8-5, and 21 and Spring and Pond 22 began in anticipation of future <br />East Pod mining activities <br />Surface Water Monitoring Stations: STREAMS AND DITCHES <br />Monitoring of surface water stations during 1997 was concentrated m the Steven's Gulch and <br />East Roatcap Creek areas because that drainage has seen recent mining activity and is projected <br />for further activity during the current permit term. Overall, adverse impacts attn'butable to <br />mining were not evident at any of the monitored surface water stations (refer to Table 1 and <br />Map No. 4-1). Stations SW-5 (Stevens Gulch), SW-6 (East Roatcap Creek), and SW-10 <br />(Terror Creek), exhibited normal flows and water quality parameters consistent whh previous . <br />yeazs data. No evidence of subsidence impacts in these drainages was appazent. Mining <br />occurred in the Stevens Gulch drainage upstream of site S W-5 during 1993 in Panel C. Panel C <br />mining was designed and conducted to prevent the development of subsidence in order to <br />protect the waterway and certain structures hm the vicinity. Data collected during 1997 shows <br />these protective measures were successful. <br />Monitoring ofSW-1 and SW-2 began in anticipation offirture East Pod mining activities. <br />Surface Water Monitoring Stations: SMALL AREA EXEMPTIONS <br />The east mine fan level was defined as a small azea exemption as drainage from this area (refer <br />to Map 8-1) is not conveyed to a sediment pond. Three sample points were defined at this <br />location and sampled for conformance with the NPDES dischazge ahernative limitations <br />requirements associated with discharges occurring because of precipitation events of less than <br />tfie 10-year and 24-hour magnitude. In these instances, settleable solids and pH limitations must <br />be met. No samples were collected during 1997 from these SAE points. <br />Page 6 of 7 <br />• <br />