09.04 - Draft Reissued State Disposal System Permit (SDS)

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Milnnesota Pollution Public Notice of Intent to Control Agency 520 Lafayette Road North Reissue St.Paul,MN 55 a 55-4194 Wastewater MN0021661 General information Public comment period begins. December 18, 2015 Public comment period ends, 4 30 p m on January 19,2016 Current permit issued (if applicable). November 17, 20,11 Current permit expiration date (if applicable) October 31, 2016 Name and address of Permittee Facility name and location MPCA contact person City of Pequot Lakes Pequot Lakes WWTF Robin Novotny 4638 County Road 11 4798 Derksen Road Municipal Division Pequot Lakes, MN 56472 Pequot Lakes, MN 56472 Minnesota Pollution Control Agency Sibley Township, Cass County 7678 College Road, Suite 105 Township 136 North, Range 29 West, Baxter, MN 56425 Section 14 and 23 Phone 218-316-3851 Email robin novotnv aastate mn us File manager phone 651-757-2728 or 844-828-0942 A draft permit and Statement of Basis is available for review on the Minnesota Pollution Control Agency(MPCA)Public Notices webpage at htto 11www oca.state.mn.us/publicnotices or at the MPCA office address listed under the MPCA contact person The MPCA will mail or email a copy of the draft permit upon request Comments, petitions, and other requests must be received at the MPCA in writing on or before the public comment period end date and time identified above Watershed. Crow Wing River Description of Pequot Lakes Wastewater Treatment Facility The Pequot Lakes Wastewater Treatment Facility(Facility) is located at SW'/4, Section 14, Township 136 North, Range 29 West, Pequot Lakes, Crow Wing County, Minnesota This is a Class D Facility The application and plans indicate that the existing treatment system consists of approximately 3,630 feet of 6-inch force main, a two-cell aerated pond system, and three spray irrigation sites totaling 100 acres that will be replaced with 56 6 acres of row irrigation during the permit term The Facility is designed to treat an average wet-weather flow of 121,795 gallons per day (gpd)with a five-day carbonaceous biochemical oxygen demand (CBOD5) strength of approximately 250 milligrams per liter(mg/L) The two aerated pond cells have a maximum high water level of 13 feet with 2 feet of biosolids storage The size of each pond at the mean operating depth of 7 5 feet is 4 32 acres with a total storage volume of about 30,983,000 gallons providing a combined detention time of 254 days at design flow The treated wastewater will be applied to the 56 6 acre row irrigation system has been completed The maximum allowed flow to the row irrigation site is 45 million gallons per year There are no designed bypass or overflow points known to exist in the disposal system There is no discharge point to surface waters from this facility There is no surface water discharge from this Facility The preliminary determination to Reissue this State Disposal System permit is tentative www pca state mn us . 651 296 6300 . 800 657 3864 . TTY 651 282 5332 or 800 657 3864 . Available in alternative formats t-admin20-01 • 1213115 Page 1 of 2