Five sites were more intensively sampled during March, May, and July 2007 to determine how flow and acidity changed over differing time periods. Flows were found to vary significantly between months. However, flow differences were not significant within the same month. Acidity followed a similar trend.The site locations were identified by using a Magellan Sportrak handheld GPS unit. The time since closure of each mine was determined using dates listed in the 1968 water sampling report (Demchak et al., 2004). All sites discharge water anbsp;...
|Title||:||Water Quality Changes Over Time in Upper Freeport and Pittsburgh Coal Mines in West Virginia|
|Author||:||Ben M. Mack|
|Publisher||:||ProQuest - 2008|