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17 MIDSIZED SUBSURFACE SEWAGE TREATMENT SYSTEMS 7081.0230 gained in subpart 2 indicates that a proposed system is a potential contaminant threat to a regional water table, an aquifer, or water supply well(s). The threats of concern include, but are not limited to, fecal organism contamination, nitrate contamination, or phosphorus impacts to surface waters. Subp. 4. Monitoring. The designer must consult with the local unit of government to determine if the local unit of government will require effluent or groundwater monitoring and, if so, the extent of the monitoring. Monitoring must be conducted if information gained in subpart 2 or 3 indicates that a proposed system is a potential contaminant threat to a regional water table, an aquifer, or a water supply well or impacts surface waters. The potential groundwater mound height must be monitored under all MSTS during operation. Subp. 5. Hydrological interpretations. The information gathered in this part must be used to estimate or measure if the system adequately protects the groundwater and surface water as prescribed in part 7081.0080, subpart 4. The interpretation must include an evaluation of whether contaminant plumes will intersect water supply well capture zones. Subp. 6. Groundwater report. All information required in this part must be submitted for review and approval of the local unit of government prior to final design, including all applicable information delineated on a map. Statutory Authority: MS s 115.03; 115.55 History: 32 SR 1400 Published Electronically: March 11, 2011 7081.0230 DESIGN STANDARDS. A. The design standards for new construction or replacement MSTS in parts 7081.0240 to 7081.0270 are provided to meet many of the public health and environmental outcomes in part 7081.0080. In some cases, specific engineered methods must be employed in addition to the standards provided in parts 7081.0240 to 7081.0270. B. MSTS must not receive storm water or other sources of clean water. C. All structural components of the system and sealants must be designed to operate throughout the system's design life. D. A flow measure device must be employed on all MSTS. E. The system must be designed with sufficient access and ports to monitor the system as applicable. F. MSTS must employ components registered under parts 7083.4000 to 7083.4110 or have sufficient regulatory oversight in the operating permit. Statutory Authority: MS s 115.03; 115.55 History: 32 SR 1400 Published Electronically: March 11, 2011 Copyright ©2014 by the Rev so of Statutes, State of Minnesota. All Rights Reserved.