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May Day and Idaho Mine Complex 112 (d) Permit Application <br />(V) recommendations submitted by the facility owner or Operator, including <br />technical and economic feasibility. <br />(ii) For new facility or new activity which may cause an adverse impact on groundwater <br />quality, the point of compliance will be set as follows: <br />(A) unless modified by the Office as specified in Paragraph (B) below, the point of <br />compliance will be set at the hydrologically down-gradient limit of the area be- <br />low the facility or activity potentially impacting groundwater quality. <br />(B) The point of compliance determined in Paragraph (A) above may be modified by <br />the Office on a case-by-case basis with consideration of the following factors: <br />(I) the classified use, established by the Water Quality Control Commission, for <br />groundwater or surface water which could be impacted by contamination <br />from the facility; <br />(II) the geologic and hydrologic characteristics of the site, such as depth to <br />groundwater, groundwater flow direction and velocity, soil types, surface <br />water impacts, and climate; <br />(III) the toxicity, mobility, and persistence in the environment of contaminants <br />used or stored at the facility which could reasonably be expected to be dis- <br />charged from the facility; <br />(IV) the potential of the site as an aquifer recharge area; and <br />(V) recommendations submitted by the facility owner or Operators including <br />technical and economic feasibility. <br />(7) Groundwater Monitoring: <br />(a) For existing operations through permit modifications, and for new permit applications, a <br />groundwater monitoring program (Exhibit T) will be implemented to detect potential ad- <br />verse impacts on groundwater quality where impacts may be reasonably be expected. <br />(b) Groundwater monitoring including the adopted sampling and analysis plan has included <br />the following information as part of a permit application. <br />(i) a map that accurately locates all proposed groundwater sample points and locations <br />that are proposed as a point of compliance; <br />(ii) the method of monitoring well completion where monitoring wells are required; <br />(iii) method of sampling, frequency of sampling and reporting to the Office; <br />(iv) parameters analyzed, water quality analysis methods, and quality control and quality <br />assurance methods; <br />May Day Idaho Mine Complex 112(d) Permit Application <br />September 21, 2010 (REVISED Oct. 22, 2010) <br />11