§ 87.116. Hydrologic balance: groundwater monitoring.
(a) Groundwater levels, infiltration rates, subsurface flow and storage characteristics and the quality of groundwater shall be monitored in a manner approved by the Department to determine the effects of surface mining activities on the recharge capacity of reclaimed lands and on the quantity and quality of groundwater in the permit and adjacent areas.
(b) When surface mining activities may affect the groundwater systems which serve as aquifers which significantly ensure the hydrologic balance of water use on or off the permit area, groundwater levels and groundwater quality shall be monitored. Monitoring shall include measurements from a sufficient number of wells and chemical analyses of water from aquifers which adequately reflect changes in groundwater quantity and quality resulting from those activities. Monitoring shall be adequate to plan for modification of surface mining activities, if necessary, to minimize disturbance of the prevailing hydrologic balance. At a minimum, total dissolved solids or specific conductance corrected to 25°C, pH, acidity, alkalinity, total iron, total manganese, sulfates and water levels shall be monitored and reported to the Department at least every 3 months for each monitoring location.
(c) The person who conducts surface mining activities shall conduct additional hydrologic tests as specified and approved by the Department, including but not limited to, drilling, infiltration tests, aquifer tests, chemical and mineralogical analyses of overburden and spoil and shall submit the results to the Department to demonstrate compliance with this section and § 87.115 (relating to hydrologic balance: protection of groundwater recharge capacity).
(d) The Department may require the operator to conduct monitoring and reporting more frequently than every 3 months, and to monitor additional parameters beyond the minimum specified in this section.
Authority The provisions of this § 87.116 amended under the Surface Mining Conservation and Reclamation Act (52 P.S. § § 1396.1—1396.19a); The Clean Streams Law (35 P.S. § § 691.1—691.1001); and section 1920-A of The Administrative Code of 1929 (71 P.S. § 510-20).
Source The provisions of this § 87.116 adopted December 19, 1980, 10 Pa.B. 4789, effective July 31, 1982, 12 Pa.B. 2382; amended July 30, 1982, 12 Pa.B. 2473, effective July 31, 1982, 12 Pa.B. 2382; amended December 15, 1995, effective December 16, 1995, 25 Pa.B. 5821. Immediately preceding text appears at serial pages (198975).
Cross References This section cited in 25 Pa. Code § 87.69 (relating to protection of hydrologic balance).
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