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~II ~I~~I~~I~~~~~ ~I~ sss NOV 9, p~8g MLRD 423 Centennial Bldg. 1313 Sherman St. Denver, CO 80203 November 1, 1989 RE: Annual Hydrologic Report for survey for GRASSY GAP MINE, Routt C-81-039 with Technical Revisions. RECLARAgT rJ~ ~ D)Stdv 1989 and results of spring/seep County, Colorado. File NO. The mine is presently shut down and not in production, water monitoring is under Temporary Cessation status. On April 24, 1989 the mine was visited and the roads, ditches, culverts and ponds were checked. All appeared in order and no ponds were discharging. Snow melt was almost over. Possible springs and seeps were noted on a map for checking in June for the annual spring\seep survey. Pit 2 well and Pit 5 well casings were cut off at ground level and capped. Because the pit wells are generally dry in October they were sampled at this time. Field data is as follows and lab data is attached. Date Time Depth to water Temp pH Cond Pit 2 well 4-24-89 1357 11.65'from Ground 9C 6.1 2250 Pit 5 well 4-24-89 1430 dry On June 29,1989 the mine site was visited for the June spring\seep survey and the semi-annual data collection of field parameters at the specified sites. No new springs\seeps were noted and the field parameters at sample sites were as follows: Site Date Time Flo or depth Meas Temp pH Cond 02 MW-3 6-29-89 1330 5.01' 14C 7.2 1388 SW-4 6-29-89 1307 0.50 cfs 16C 7.8 1020 8.9 SW-3 6-29-89 1420 No Flo - - - - Pit 2 W 6-29-89 1200 Dry - - - - Pit 5 W 6-29-89 1230 Dry - - - - On October 11, 1989 the mine site was visited for the purpose of collecting samples and field parameters for the fall semi-annual episode.Field data is as follows and lab data is attached. Site Date Time Flo or depth Meas Temp pH Cond 02 MW-3 10-11-89 1220 7.58' 14C 7.2 1390 SW-4 10-11-89 1230 0.02 cfs lOC 8.2 1122 9.1 SW-3 10-11-89 1200 no Flo - - - - Pit 2 W 10-11-89 1030 Dry - - - - Pit 5 W 10-11-89 1130 Dry - - - - Si~n~cner/~ely, l.X-K.~ CN~ti ~. f '' ~~ti Allan E. Miller, Consulting Geologist Box 249, Steamboat Springs, CO 80477 879-0437 (For Ryan Inc., Grassy Gap Mine)