#04 - RFP for Land - Laserfiche WebLink

Home Browse Search

Cyphers Logistic Park AUAR 32 March 2022 The Metro Wastewater Treatment Plant is the largest waste water treatment facility in Minnesota. The plant is an advanced secondary treatment plant with chlorination/dichlorination. Currently, the plant has a maximum capacity of 314 million gallons per day. During the month of September 2021, the plant had an ave rage flow of 160.8 million of gallons per day, which results in an excess capacity of approximately 153 million gallons per day. Table 6 illustrates the anticipated average daily flow rates and peak daily flow rates for each of the scenarios. Each of the potential scenarios is well within the existing capacity of the existing Metro Wastewater Treatment Plant. Table 6 : Anticipated Average Daily Flow Rates and Peak Daily Flow Rates AVERAGE DAY WASTEWATER USE PEAK DAY WASTEWATER USE Area north of 34th Street N (gpd) Area south of 34th Street N (gpd) Total AUAR s tudy area (gpd) Area north of 34th Street N (gpd) Area south of 34th Street N (gpd) Total AUAR s tudy area (gpd) Scenario 1 114,000 38,000 152,000 240 80 320 Scenario 2 104,000 38,000 142,000 220 80 300 Scenario 3 38,000 38,000 76,000 80 80 160 Scenario 4 0 38,000 38,000 0 80 80 2) If the wastewater discharge is to a subsurface sewage treatment system (SSTS), describe the system used, the design flow, and suitability of site conditions for such a system. The existing public works facility is served by an Individual Subsurface Sewage Treatment System that includes a private drainfield. The public works facility is located in the area north of 34th Street N and there is no immediate plan to hook up the system to the regional sanitary system. At the time of development in the area north of 34th Street N , the public works facility may be hooked up to the regional system, but it is unknown at this time. If Scenario 4 were to be developed, Individual Subsurface Sewage Treatment Systems (SSTS) would likely be installed to serve the rural residential development in the area north of 34th Street N . However, as previously stated, the City anticipates that development of the area north of 34 th Street N will be consistent with either Scenario 1, 2, or 3 and that the area will be served by the regional sewer extension and that no other subsurface sewage treatment systems (SSTS) would be developed in the AUAR s tudy a rea. 3) If the wastewater discharge is to surface water, identify the wastewater treatment methods, discharge points, and proposed effluent limitations to mitigation impacts. Discuss any effects to surface or groundwater from wastewater discharges. No wastewater discharge to surface waters is anticipated for any of the development scenarios .