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HomeMy WebLinkAboutWQ0045749_Application (FTSE)_20240822State of North Carolina Department of Environmental Quality PWR Division of Water Resources %Dhblon of Water Resources Flow Tracking for Sewer Extension Applications (FTSE 10-23) Entity Requesting Allocation: NUR, Inc. Project Name for which flow is being requested: Preservation Point More than one FTSE may be required for a single project if the owner of the WWTP is not responsible for all pump stations along the route of the proposed wastewater flow. I. Complete this section only if you are the owner of the wastewater treatment plant. a. WWTP Facility Name: McAlpine Creek, Irwin Creek, Sugar Creek b. WWTP Facility Permit #: NC0024970, NC0024945, NCO024937 wF=NED All flows are in 1Vl D c. WWTP facility's permitted flow 99.00 r, ,� 2 2024 d. Estimated obligated flow not yet tributary to the WWTP 15.543 e. WWTP facility's actual avg. flow 70.142 WR/NPDES f. Total flow for this specific request 0.02394 g. Total actual and obligated flows to the facility 85.709 h. Percent of permitted flow used 86.6% Il. Complete this section for each pump station you are responsible for along the route of this proposed wastewater flow. List pump stations located between the project connection point and the WWTP: (A) (B) (C) (D)=(B+C) (E)=(A-D) Design Obligated, Pump Pump Average Approx. Not Yet Total Current Station Station Firm Daily Flow** Current Tributary Flow Plus (Name or Permit Capacity, * (Firm / pf), Avg. Daily Daily Flow, Obligated Available Number) No. MGD MGD Flow, MGD MGD Flow Capacity*** Mountain Isle 0.625 0.25 0.09 0 0.09 0.16 Long Creek 8.50 3.40 5.051 1.085 6.136 -2.736 Paw Creek 10.70 4.28 5.768 1.356 7.124 -2.844 * The Firm Capacity (design flow) of any pump station is defined as the maximum pumped flow that can be achieved with the largest pump taken out of service. ** Design Average Daily Flow is the firm capacity of the pump station divided by a peaking factor (pf) not less than 2.5, per Section 2.02(A)(4)(c) of the Minimum Design Criteria. *** A Planning Assessment Addendum shall be attached for each pump station located between the project connection point and the WWTP where the Available Capacity is < 0. Downstream Facility Name (Sewer): Unknown Downstream Permit Number: Unknown Page 1 of 6 FTSE 10-23 III. Certification Statement: I Ke ri Cantrell certify to the best of my knowledge that the addition of the volume of wastewater to be permitted in this project has been evaluated along the route to the receiving wastewater treatment facility and that the flow from this project is not anticipated to cause any capacity related sanitary sewer overflows or overburden any downstream pump station en route to the receiving treatment plant under normal circumstances, given the implementation of the planned improvements identified in the planning assessment where applicable. This analysis has been performed in accordance with local established policies and procedures using the best available data. This certification applies to those items listed above in Sections I and II plus all attached planning assessment addendums for which I am the responsible party. Signature of this form certifies that the receiving collection system or treatment works has adequate capacity to transport and treat the proposed new wastewater. Digitally signed by Keri Cantrell Date: 2024.07.16 13:26:22-04'00' 7/16/2024 Adobe Acrobat version: 2024.002.20759 Signing Official Signature Chief Engineer Title of Signing Official Date Page 2 of 6 FTSE 10-23 PLANNING ASSESSMENT ADDENDUM (PAA) Submit a planning assessment addendum for each pump station listed in Section II where Available Capacity is < 0. Pump Station (Name or Number): Given that: a. The proportion and amount of Obligated, Not Yet Tributary Daily Flow (C) accounts for 19 . % and 1.356 MGD of the Available Capacity (E) in Pump Station Long Creek and Paw Creek ; and that b. The rate of activation of this obligated, not yet tributary capacity is currently approximately 1.356 MGD per year; and that c. A funded Capital Project that will provide the required planned capacity, namely Stowe Regional Water Resource Recovery Facility is in design or under construction with planned completion in d. The following applies: 2026 and/or The existing Charlotte Water collection system flows from Long Creek Pump Station (LCPS) to Paw Creek Pump Station (PCPS) to McAlpine WWTP. A new Stowe Regional Water Resource Recovery Facility ("Stowe Regional") is under construction (permitted at 15 MGD initially) that will intercept sewer discharges normally going to the existing LCPS. While Stowe Regional will include a new influent pump station it will also incorporate the existing LCPS into the facility's operation to offer flexibility to direct flows when necessary to the PCPS. LCPS current and future capacities shown below: Long Creek Pump Station Firm Pump Capacity (mgd) Total Installed (peak) (mgd) EQStorage (MG) Current 8.5 12 11 1 st Qtr 2025 12 16 11 2nd Qrt 2025 12 16 29 Stowe Regional is anticipated to come online with its own influent pump station in addition to the LCPS abilities in early 2027. With Stowe coming online, PCPS flows will decrease by an equivalent amount received at LCPS. Currently, LCPS and PCPS operate as a combined system with the LCPS able to transfer flows to flow equalization tanks during peak flow events and then meter out the flow to PCPS as conditions allow. PCPS is currently at substantial completion on a project to increase the firm pumping capacity to 20 MGD. Full operation is anticipated by March 2025. The Paw Creek force main replacement portion of the project has already been completed. With installed capacity and existing EQ basin storage, LCPS and PCPS have been able to successfully manage all peak flow events. Therefore: Given reasonably expected conditions and planning information, there is sufficient justification to allow this flow to be permitted, without a significant likelihood of over -allocating capacity in the system infrastructure. I understand that this does not relieve the collection system owner from complying with G.S. 143- 215.67(a) which prohibits the introduction of any waste in excess of the capacity of the waste disposal system. Digitally signed by Keri Cantrell � Date: 2024.07.16 13:27:03-04'00' Adobe Acrobat version: 2024.002.20759 7/16/2024 Signing Official Signature Date Page 3 of 8 FTSE 10-23