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15. Water Surface Use. This item need only be addressed if the AUAR area would include or adjoin recreational water bodies. 16. Erosion and sedimentation. The number of acres to be graded and number of cubic yards of soil to be moved need not be given; instead, a general discussion of the likely earthmoving needs for development of the area should be given, with an emphasis on unusual or problem areas. In discussing mitigation measures, both the standard requirements of the local ordinances and any special measures that would be added for AUAR purposes should be irlcl�ded. 17, Water Quality-Stomwater Runoff. For an AUAR the following additional guidance should be followed in addition to that in "EAW Guidelines": ■ It is expected that an AUAR will have a detailed analysis of stormwater issues; ° A map of the proposed stormwater management system and of the water bodies that will receive stormwater should be provided; ° The description of the stormwater systems would identify on-site and "regional" detention ponding and also indicate whether the various ponds will be new water bodies or converted existing ponds or wetlands. Where on-site ponds will be used but have not yet been designed, the discussion should indicate the design standards that will be followed. If present in or adj oining the AUAR area, the following types of water bodies must be given special analyses: ° Lakes: within the Twin Cities metro area a nutrient budget analysis must be prepared for any "priority lake" identified by the Metropolitan Council. Outside of the metro area, lakes needing a nutrient budget analysis must be determined by consultation with the MPCA and DNR staffs; ° Trout Streams: if stormwater discharges will enter or affect a trout stream an evaluation of the impacts on the chemical composition and temperature regime of the stream and the consequent impacts on the trout population (and other species of concern) must be included. 19. Water Quality-Wastewater. Observe the following points of guidance in an AUAR: ■ Only domestic wastewater should be considered in an AUAR—industrial wastewater would be coming from industrial uses that are excluded from review through an AUAR process. � Wastewater flows should be estimated by Iand use subareas of the AUAR area; the basis of flow estimates should be explained. ■ The major sewer system features should be shown on a map and the expected flows should be identified. ■ If not explained under item 6, the expected staging of the sewer system construction should be described. ■ The relationship of the sewer system extension to the RGU's comprehensive sewer plan and (for metro area AUARs) to Metropolitan Council regional systems plans, including MUSA expansions, should be discussed. For non-metro area AUARs, the AUAR must discuss the capacity of the RGU's wastewater treatment system compared to the flows from the AUAR area; any necessary improvements should be described. G�