Laserfiche WebLink
disc3~arges ooaurirg as a result of precipitation events of less than the 10-year <br />• 24-hour magnitude. In these i.nstarx,~s, settleable solids and pH limitations must <br />be met. During 1993, several samples were collecked from these SAE points and <br />all were fourd to be in oonformanoe with the applicable settleable solids (0.5 <br />ml/1/hr) aryl pH (6.5 - 9.0) limitations. OOVOC will continue to obtain sas~les <br />from these locations and provide the results to the Division to demonstrate that <br />water quality standai~r.Ls are being met in discha17ges fran this site. <br />Hydrology monitoring was extended into the northern portion of the Fast Roatcap <br />Creek drainage during 1993 to a~adate newly acquired lease areas and revised <br />mine plans. Mining during 1993 was confined to the central aryl western thick <br />opal pods with development mining prevalent. A small localized area (Panel AA) <br />• in the westerrmas-t portion of the lease area was retreat mined dosing 1993 but <br />was not located it the vicinity of any monitored hydrology features. Minirg <br />during 1993 in the central pod was confined to Panel C where partial extraction <br />methodologies were utilized to prevent subsidence develogmP~ts from occurring in <br />this area. Hydrology monitoring conducted during 1993 did not indicate mine <br />related i~acts were occurring. 'ihe majority of monitored locations exhibited <br />characteristics and patterns similar to previously observed data. Water quality <br />remains good overall and no physical impacts have been noted at any of the <br />monitored locations which would suggest adverse effects associated with mining <br />operations at the Cyprus Orchard Valley Mine. <br />• <br />17 <br />