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SEEPAGE CONTROL <br />During a site inspection on April 28, 1988 seeps were noted in <br />the vicinity of the No. 1 mine portals. The seeps, which were <br />obviously high in iron content, were surfacing along the rip rap <br />bank of North Thompson Creek and running into the creek. On <br />April 30th excavation work was started to investigate the source <br />of and to contain the seeps. By May 6, 1988 all of the seepage <br />coming from the No. 1 Mine portal area was contained in a french <br />drain system and was being piped to on site ponds. <br />Access to the portal area was first established by installing a <br />• 42 -inch culvert in North Thompson Creek. A backhoe was used to <br />excavate the face of the portals and a front end loader was used <br />to haul the excavated material from the portal area to an ad- <br />jacent stockpile area. The eastern portal, rock slope, was un- <br />covered first. The seal was exposed for inspection and water was <br />noted leaking around its upper right corner at the rate of about <br />eight gallons per minute. Controlling the water from this portal <br />had no effect on the seeps which were surfacing along the rip rap <br />bank upstream of this area. <br />Excavation continued upstream, to the west, towards the area <br />where the seeps were first noted. The next feature excavated was <br />4-66c (New 6-20-88) <br />