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HomeMy WebLinkAboutWQ0042084_Application_20201130GWM State of North Carolina Department of Environmental Quality Division of Water Resources 15A NCAC 02T .0300 — FAST TRACK SEWER SYSTEM EXTENSION APPLICATION "Division of Water Resources FTA 04-16 & SUPPORTING DOCUMENTATION RF-CEIVEDINCDENRIDWR Application Number: b6 m(to be completed by DWR) Nov U 4 2020 All items must be completed or the application will be returned I. APPLICANT INFORMATION: 1. Applicant's name: City of Newton (company, municipality, HOA, utility, etc.) 2. Applicant type: ❑ Individual ❑ Corporation ❑ General Partnership ❑ Federal ❑ State/County ® Municipal 3. Signature authority's name: Todd Clark per 15A NCAC 02T .0106(b) Title: City Manager 4. Applicant's mailing address: P.O. Box 550 City: Newton State: NC Zip: 28658- 5. Applicant's contact information: Phone number: (828) 695-4259 Email Address: tclarkna,newtonnc.gov II. PROJECT INFORMATION: WOROS MOORESVILLE REGIONAL OFFICE ❑ Privately -Owned Public Utility ❑ Other 1. Project name: 2nd Street Sewer Replacement 2. Application/Project status: ® Proposed (New Permit) ❑ Existing Permit/Project If a modification, provide the existing permit number: WQ00 and issued date: If new construction but part of a master plan, provide the existing permit number: WQ00 3. County where project is located: Catawba 4. Approximate Coordinates (Decimal Degrees): Latitude: 35.663827' Longitude:-81.2184100 5. Parcel ID (if applicable): (or Parcel ID to closest downstream sewer) 111. CONSULTANT INFORMATION: l . Professional Engineer: A. Slade Harvin, PE License Number: NC 032587 Firm: The Wooten Company Mailing address: 1430-B Old Lenoir Road City: Newton State: NC Zip: 28601- Phone number: (828) 322-5533 Email Address: sharving_thewootencompany.com IV. WASTEWATER TREATMENT FACILITY (WWTF) INFORMATION: 1. Facility Name: Clark Creek W WTP Permit Number: NC 0036196 Owner Name: City of Newton V. RECEIVING DOWNSTREAM SEWER INFORMATION (if different than WWTF): 1. Permit Number(s): WQ Downstream (Receiving) Sewer Size: 18- inch System Wide Collection System Permit Number(s) (if applicable): WQCS000444 Owner Name(s): City of Newton FORM: FTA 04-16 Page 1 of 5 Vl. GENERAL REQUIREMENTS 1. If the Applicant is a Privately -Owned Public Utility, has a Certificate of Public Convenience and Necessity been attached? ❑ Yes [—]No ®N/A 2. If the Applicant is a Developer of lots to be sold, has a Developer's Operational Agreement (FORM: DEV) been attached? ❑ Yes [-]No ®N/A 3. If the Applicant is a Home/Property Owners' Association, has an Operational Agreement (FORM: HOA) been attached? ❑ Yes [:]No ®N/A 4. Origin of wastewater: (check all that apply): ® Residential Owned ❑ Retail (stores, centers, malls) ❑ Car Wash ❑ Residential Leased ❑ Retail with food preparation/service ❑ Hotel and/or Motels ❑ School / preschool / day care ❑ Medical / dental / veterinary facilities ❑ Swimming Pool /Clubhouse ❑ Food and drink facilities ❑ Church ❑ Swimming Pool/Filter Backwash ® Businesses / offices / factories ❑ Nursing Home ❑ Other (Explain in Attachment) 5. Nature of wastewater: 100 % Domestic/Commercial % Commercial % Industrial (See 15A NCAC 02T .0103(20)) 4 Is there a Pretreatment Program in effect? ❑ Yes ❑ No 6. Hasa flow reduction been approved under 15A NCAC 02T .0114(fl? ❑ Yes ®No ➢ If yes, provide a copy of flow reduction approval letter 7. Summarize wastewater generated by project: Establishment Type (see 02T.0114(f) Daily Design Flow a,b No. of Units Flow Replacement Project - NO NEW FLOW gal/ GPD gal/ GPD gal/ GPD gal/ GPD gal/ GPD gal/ GPD Total GPD a See 15A NCAC 02T .0114(b), (d), (e)(1) and (e)(2) for caveats to wastewater design flow rates (i.e., minimum flow per dwelling; proposed unknown non-residential development uses; public access facilities located near high public use areas; and residential property located south or east of the Atlantic Intracoastal Waterway to be used as vacation rentals as defined in G.S. 42A-4). b Per 15A NCAC 02T .0114(c), design flow rates for establishments not identified [in table 15A NCAC 02T.0114] shall be determined using available flow data, water using fixtures, occupancy or operation patterns, and other measured data. 8. Wastewater generated by project: 0 GPD (per 15A NCAC 02T .0114) ➢ Do not include future flows or previously permitted allocations If permitted flow is zero, indicate why: ❑ Pump Station or Gravity Sewer where flow will be permitted in subsequent permits that connect to this line ❑ Flow has already been allocated in Permit Number: ® Rehabilitation or replacement of existing sewer with no new flow expected ❑ Other (Explain): FORM: FTA 04-16 Page 2 of 5 VII. GRAVITY SEWER DESIGN CRITERIA (if Applicable) - 02T .0305 & YIDC (Gravity Sewers): 1. Summarize gravity sewer to be permitted: Size (inches) Length (feet) Material is 300 PVC 12 280 PVC 8 80 PVC ➢ Section II & III of the MDC for Permitting of Gravity Sewers contains information related to design criteria ➢ Section III contains information related to minimum slopes for gravity sewer(s) ➢ Oversizing lines to meet minimum slope requirement is not allowed and a violation of the MDC VIII. PUMP STATION DESIGN CRITERIA (If Applicable) — 02T .0305 & MDC (Pump Stations/Force Mains): COMPLETE FOR EACH PUMP STATION INCLUDED IN THIS PROJECT I . Pump station number or name: 211 Street Pump Station 2. Approximate Coordinates (Decimal Degrees): Latitude: 35.664775' Longitude:-81.218396' 3. Design flow of the pump station: 0.0769 (avg daily) millions gallons per day (firm capacity) 4. Operational point(s) of the pump(s): 375 gallons per minute at 51 feet total dynamic head (TDH) 5. Summarize the force main to be permitted (for this Pump Station): Size (inches) Length (feet) Material 6 1,740 DIP 6. Power reliability in accordance with 15A NCAC 02T .0305(h)(1): ® Standby power source or pump with automatic activation and telemetry - 15A NCAC 02T .0305(h)(1)(B): ➢ Required for all pump stations with an average daily flow greater than or equal to 15,000 gallons per day ➢ Must be permanent to facility Or if the pump station has an average daily flow less than 15,000 gallons per day: ❑ Portable power source with manual activation, quick -connection receptacle and telemetry - 15A NCAC 02T .0305(h)(1)(C) or ❑ Portable pumping unit with plugged emergency pump connection and telemetry - 15A NCAC 02T .0305(h)(1)(C): ➢ It shall be demonstrated to the Division that the portable source is owned or contracted by the applicant (draft agreement) and is compatible with the station. ➢ If the portable power source or pump is dedicated to multiple pump stations, an evaluation of all the pump stations' storage capacities and the rotation schedule of the portable power source or pump, including travel timeframes, shall be provided in the case of a multiple station power outage. FORM: FTA 04-16 Page 3 of 5 IX. SETBACKS & SEPARATIONS — (02B .0200 & 15A NCAC 02T .0305(f)): 1. Does the project comply with all separations found in 15A NCAC 02T .0305(f) & (g) 15A NCAC 02T.0305(f) contains minimum separations that shall be provided for sewer systems: ® Yes [:]No Setback Parameter* Separation Required Storm sewers and other utilities not listed below (vertical) 24 inches Water mains vertical -water over sewer including in benched trenches 18 inches Water mains horizontal 10 feet Reclaimed water lines vertical - reclaimed over sewer 18 inches Reclaimed water lines horizontal - reclaimed over sewer 2 feet **Any private or public water supply source, including any wells, WS-I waters of Class I or Class It impounded reservoirs used as a source of drinking water 100 feet **Waters classified WS (except WS-I or WS-V), B, SA, ORW, HQW, or SB from normal high water or tide elevation and wetlands see item IX.2 50 feet **Any other stream, lake, impoundment, or ground water lowering and surface drainage ditches 10 feet Any buildin foundation 5 feet Any basement 10 feet Top slope of embankment or cuts of 2 feet or more vertical height 10 feet Drainage systems and interceptor drains 5 feet Any swimming pools 10 feet Final earth grade vertical 36 inches ➢ 15A NCAC 02T.0305(e) contains alternatives where separations in 02T.0305(f) cannot be achieved. ➢ **Stream classifications can be identified using the Division's NC Surface Water Classifications webnaee ➢ If noncompliance with 02T.0305 or (g), see Section X of this application 2. Does the project comply with separation requirements for wetlands? (50 feet of separation) ❑ Yes [:]No ® N/A ➢ See the Division's draft separation requirements for situations where separation cannot be meet ➢ No variance is required if the alternative design criteria specified is utilized in design and construction ➢ As built documents should reference the location of areas effected 3. Does the project comply with setbacks found in the river basin rules per 15A NCAC 0213.0200? ❑ Yes ❑ No ® N/A ➢ This would include Trout Buffered Streams per 15A NCAC 213.0202 4. Does the project require coverage/authorization under a 404 Nationwide or ❑ Yes ® No individual permits or 401 Water Quality Certifications? ➢ Information can be obtained from the 401 & Buffer Permitting Branch 5. Does project comply with 15A NCAC 02T.0105(c)(6) (additional permits/certifications)? ® Yes ❑ No Per 15A NCAC 02T.0105(c)(6), directly related environmental permits or certification applications are being prepared, have been applied for, or have been obtained. Issuance of this permit is contingent on issuance of dependent permits (erosion and sedimentation control plans, stormwater management plans, etc.). 6. Does this project include any sewer collection lines that are deemed "high -priority?" Per 15A NCAC 02T.0402, "high -priority sewer" means "any aerial sewer, sewer contacting surface waters, siphon, or sewer positioned parallel to streambanks that is subject to erosion that undermines or deteriorates the sewer. ❑ Yes ® No ❑ N/A ➢ If yes, include an attachment with details for each line, including type (aerial line, size, material, and location). High priority lines shall be inspected by the permittee or its representative at least once every six -months and inspections documented per 15A NCAC 02T.0403(a)(5) or the permitee's individual System -Wide Collection permit. FORM: FTA 04-16 Page 4 of 5 X. CERTIFICATIONS: 1. Does the submitted system comply with 15A NCAC 02T, the Minimum Design Criteria for the Permittingof Stations and Force Mains (latest version), and the Gravity Sewer Minimum Design Criteria (latest version) as applicable? ® Yes ❑ No If No, complete and submit the Variance/Alternative Design Request application (VADC 10-14) and supporting documents for review. Approval of the request is required prior to submittal of the Fast Track Application and supporting documents. 2. Professional Engineer's Certification: [, W. SGrgz>L Agxyz*J attest that this application for (Professional Engineer's name from Application Item I11.1.) has been reviewed by me and is accurate, complete and consistent with the information supplied in the plans, specifications, engineering calculations, and all other supporting documentation to the best of my knowledge. I further attest that to the best of my knowledge the proposed design has been prepared in accordance with the applicable regulations, Gravity Sewer Minimum Design Criteria for Gravity Sewers (latest version), and the Minimum Design Criteria for the Fast -Track Permitting of Pump Stations and Force Mains (latest version). Although other professionals may have developed certain portions of this submittal package, inclusion of these materials under my signature and seal signifies that I have reviewed this material and have judged it to be consistent with the proposed design. NOTE — In accordance with General Statutes 143-215.6A and 143-215.613, any person who knowingly makes any false statement, representation, or certification in any application package shall be guilty of a Class 2 misdemeanor, which may include a fine not to exceed $10,000, as well as civil penalties up to $25,000 per violation. North Carolina Professional Engineer's seal, signature, and date: Applicant's Certification per 15A NCAC 02T .0106(b): attest that this application for (Signature AuthoAty's namekk title from Application Item I.3.) has been reviewed by me and is accurate and complete to the best of my knowledge. I understand that if all required parts of this application are not completed and that if all required supporting documentation and attachments are not included, this application package is subject to being returned as incomplete. I understand that any discharge of wastewater from this non - discharge system to surface waters or the land will result in an immediate enforcement action that may include civil penalties, injunctive relief, and/or criminal prosecution. I will make no claim against the Division of Water Resources should a condition of this permit be violated. I also understand that if all required parts of this application package are not completed and that if all required supporting information and attachments are not included, this application package will be returned to me as incomplete. NOTE — In accordance with General Statutes 143-215.6A and 143-215.6B, any person who knowingly makes any false statement, representation, or certification in any application package shall be guilty of a Class 2 misdemeanor, which may include a fine not to exceed $10,000 as well as civil penalties up to $25,000 per violation. Signature: Date: FORM: FTA 04-16 Page 5 of 5 T T October 29, 2020 THE Mr. Ori Tuvia WOOTEN N.C. Division of Water Quality � Mooresville Regional Office COMPANY 610 E. Center Avenue, Suite 301 Mooresville, NC 28115 RE: Application for Gravity Sewer, Pump Station, and Force Main for: 2nd Street Sewer Relocation Newton, NC TWC Project No.: 3095-AX Mr. Tuvia: This project is a CWSRF project that addresses a portion of failing sewer lines within the City of Newton. The project relocates the sewer around an existing warehouse utilizing a new duplex pump station and force main. The City's main water supply line, which is an older AC line also is located in the proximity of the project, which prevents the use of a gravity line for the rerouting of the line around the warehouse. The City has decided that it is best to reinstall this line and re-route a portion of the sewer line away from its current location beneath the warehouse and utilize a force main to limit the depth and disturbance in the road adjacent to the existing waterline. Therefore, on behalf of the City of Newton, we are sending you the following documents for your review and approval for the above -referenced project: • One (1) original and one (1) copy of the FTA 04-16 permit application w/ appendices; o A — Cover Letter o B —Application Form (FTA 04-16) o C —Application Fee o D — Project Narrative o E — Flow Tracking/Acceptance Form (FTSE 10-18) o F —Site Maps o G — Existing Permit — (N/A — Not Included) o H — Power Reliability Plan — (N/A — Not Included) 1430 B Old Lenoir Road NW o I — Certificate of Public Convenience/Necessity — (N/A — Not Included) Hickory, NC 28601 o J —Operational Agreements (N/A —Not Included) 828.322.5533 fax828.322.5242 . One (1) check for $480.00 made payable to NCDEQ; TV THE WOOTEN COMPANY 1430 B Old Lenoir Road NW Hickory, NC 28601 828.322.5533 fax 828.322.5242 211 Street Sewer Relocation City of Newton, NC Page 2 of 2 This project replaces existing, failing sewer lines. No new services are to be connected, thus there will be no immediate increase in wastewater flow as a result of this project. The pump station sizing was designed to account for peak flows and some future growth based upon information provided by the City. The City will be securing a qualified contractor to install the line. They will begin to advertise for construction on the replacement line upon approval from your office and upon approval from CWSRF. I trust the above information is sufficient for your review; however, if you should have any questions or require additional information, please do not hesitate to contact us. Best Regards, THE WOOTEN COMPANY A. Slade Harvin, P.E Enclosures: As noted above cc: Todd Clark, City Manager, City of Newton TWC File Tuvia, Ori A Ori, I hope you had a Happy Thanksgiving. Per our phone conversation last week, please find the below items that you requested regarding the above project: Average Flow = 63,641 GPD Peak Flow (calculated with 5.91 Peaking Factor) = 376,120 GPD Abandoned 18" Sanitary Sewer = 1,300 LF Abandoned 12" Sanitary Sewer = 900 LF Please let me know if there is anything else that you need. Thank you, Slade Slade Harvin, PE, LEED'AP Hickory Regional Office Manager The Wooten Company 1430 B Old Lenoir Rd NW Hickory, NC 28601 p.828.322.5533 014 f.828.322.5242 www.thewootencompany.com. 1 A. DESCRIPTION OF PROJECT Purpose/Location of Project The City of Newton is located in the central portion of Catawba County, in the Catawba River Basin (See Figure 1). The City owns and operates their sewer collection system that serves the City. Figure 1: Vicinity Map Overview The proposed project addresses the City's current and future wastewater collection needs within the vicinity of 2nd Street and N. Caldwell Avenue. The project addresses issues with the existing collection system, which runs beneath an existing industrial warehouse and provides an alternative that relocates the collection system out from below the warehouse. The proposed project is needed to continue to provide sewer service to the project area and the contributing upstream sewer basin that is collected by the existing lines within the project area. The lines to be replaced have at least one section of sewer line missing, which allows for sewer to enter into the groundwater and/or allow groundwater to enter the sewer collection system. The project will help remove wastewater from entering the groundwater and help protect public health and improve environmental quality. 2" d Street Sewer Relocation 1 Newton, NC October 2020 The proposed project involves the replacement/elimination of approximately 2,220 LF of existing gravity sewer lines, all of which are more than 40 years old. Two (2) of these lines are beneath an existing privately -owned industrial warehouse. These lines have been found to be severely deteriorated. The City wishes to permanently abandon these lines beneath the building. The project area is located within the City of Newton (See Figure 2). The project sewer basin is fully developed and according to City Staff, growth and/or redevelopment within the project area's sewer basin is not anticipated within the next 20 years and very little additional sewer flow is expected. Figure 2: Vicinity Map Close-up 2"d Street Sewer Relocation 2 Newton, NC October 2020 TYPE OF DEVELOPMENT Proposed Proiect (2"d Street Sewer Relocation) The proposed replacement sewer will consist of the following items: ■ —300 LF of 18-inch PVC gravity sewer; ■ —280 LF of 12-inch PVC gravity sewer; ■ —80 LF of 8-inch PVC gravity sewer; ■ —1,740 LF of 6-inch DIP force main; ■ New duplex submersible pump station (-375 gpm pumps) with back-up generator; ■ Abandoning the existing gravity line by capping the existing lines; ■ Installation of flumes to provide measuring of the sewer for billing of the existing warehouse; ■ Associated appurtenances and site work; This project is essentially a maintenance project, which will generate no new wastewater flow. Treatment Wastewater collected from this area is now and will continue to be treated at the City of Newton's Clark Creek WWTP. The project will not include any improvements or direct impacts to the City's wastewater treatment facility. 2"d Street Sewer Relocation 3 Newton, NC October 2020 r Entity Requesting Allocation: City of Newton State of North Carolina Department of Environmental Quality Division of Water Resources Flow Tracking for Sewer Extension Applications (FTSE 10-18) Project Name for which flow is being requested: 2" d Street Sewer Relocation 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: Clark Creek WWTP b. WWTP Facility Permit #: NC 0036196 All flows are in MGD c. WWTP facility's permitted flow 5.0 d. Estimated obligated flow not yet tributary to the WWTP 0 e. WWTP facility's actual avg. flow 3.4 f. Total flow for this specific request 0 g. Total actual and obligated flows to the facility 3.4 h. Percent of permitted flow used 68% 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) Design Pump Pump Average Approx. Station Station Firm Daily Flow** Current (Name or Permit Capacity, * (Firm / pf), Avg. Daily Number) No. MGD MGD Flow, MGD (C) (D)=(B+C) (E)=(A-D) Obligated, Not Yet Total Current Tributary Flow Plus Daily Flow, Obligated Available MGD Flow Capacity*** * 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): City of Newton Downstream Permit Number: WQCS 000444 Page 1 of 6 FTSE 10-18 III. Certification Statement: I IX)S I J,� w 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. Signing OfJoial Signature PO �1( Q;kk5 Title of Signing Official c-'u(' JQ� 046 Date Page 2 of 6 FTSE 10-18 State of North Carolina DWR Department of Environment and Natural Resources Division of Water Resources Division of Water Resources Watershed Classification Attachment (WSCAS 01-15) Along with this form, submit a color copy of a USGS Topographic Map to identify the project area and waterbodies. Each map or maps must show the location of the sewer system and include location identifiers where the system traverses over or near waterbodies. The map should have location ID's for each different waterbody and corresponding classifications should be recorded. Include the completed form and map portions with the permit application for submittal to the appropriate review agency. A list of the Division's regional offices, their county coverage, and contact information can be obtained from: http://portal.ncdenr.org/web/wq/home/ro Location ID Name of Waterbody' River Waterbody Waterbody Basin Index No. Classification 1 Town Creek Catawba 11-129-5-4 C 1 If unnamed, indicate "unnamed tributary to V, where X is the named waterbody to which the unnamed tributary joins. I certify that as a Registered Professional Engineer in the State of North Carolina that 1 have diligently followed the Division's instructions for classifying waterbodies and that the above classifications are inclusive of the stated project, complete and correct to the best of my knowledge and belief. PE Seal, Signature and Date ���1111111i1�� CA ,90 s Mon i E4TH ST Iv,STsr FZVD -ST s r� 2� ' rn o� m W EB-ST- Q - -- c' Q �m w co ,41 tw �p e 4fSt 0 200 400 C� �h Feet rt, Copyright'© 2013 National Geographic Society, i cubed , Legend City of Newton Street Stream 2nd St Sewer Relocation^��^°� a...i4vrw 4 ,a 9. w,akir, I+n rv';a:lxenc —� r Rail Project Area USGS Topographic Map THE ; October 2020 Proposed Gravity Sewer 0 Parcel WOOTEN Prnnn-pri Fnrr.P Main COMPANY Design Calculations ("Specifications Specifications may be provided upon Request) Design Summary — Flow Projections Design Summary — Flow Projections 2d Street Sewer Replacement Project Newton, NC TWC Project No.: 3095-AX Sewer Basin: WWTP Area: 7.953654 sq. miles Project Area: 0.212728 sq. miles Project Area Compared to WWTP Area: 2.675% Basin Description: The project sewer area basin is comprised of residential and commercial areas and the basin is mainly developed. The commercial area used to be comprised of mills and factories, but most of these facilities have closed. The primary use for many of the existing buildings are for warehouses to store materials. The previous uses of the existing buildings generated higher sewer flows, which resulted in the original existing sewer lines being 18-inch gravity lines. The City currently does not anticipate future sewer needs as high as previous uses. If a larger water customer did open within this sewer basin, the City believes that conservation practices would be used to limit the sewer flows generated from such a facility. City provided information that anticipates the 20-year future sewer flow to be: 76,884 gpd Since the existing sewer was sized/installed as an 18-inch sewer, proposed sewer lines for this project will be 18-inch lines also and new lines will not be reduced. Additionally, if the sewer basin does experience the re -opening of any closed facilities, the sewer collection system will capable of conveying the wastewater generated. Peaking Factor Determination: 5.91(Refer to PER and Associated Calculations) Analysis was performed to confirm the peaking factor utilized for the pump station sizing. The WWTP flows were evaluated to identify the peaking factor seen for flows entering the WWTP for the entire City's sewer collection system. Additionally, the sewer flow was estimated first based upon the percentage of the project basin area compared to the overall WWTP basin area. Sewer flow sensors were also installed just downstream of the project area to estimate the sewer flow for the project area basin. When compared, the two values differed by approximately 2,000 gpd. To be conservative, the higher of the daily average flows were utilized, which was the average daily flows based upon the percentage of the sewer basin. Average Daily Sewer Flow: Year 20 Projected Average Sewer Flow Year 20 Projected Peak Sewer Flow Pump Selection Discussion Year 20 Projected Peak Sewer Flow: 63,640 gpd 76,884 gpd 454,384 gpd 454,384 gpd Equates to 316 gpm 316 gpm is the minimum pumping rate needed within the pumping station. Need to also evaluate other pumping requirements associated with a pump station, including, but not limited to, runtime, cycle times, and turnover. Look at pumps with a capacity closer to the range of 350-375 gpm. System Conditions Force Main Diameter: 6-Inch Force Main Length: 1,745 Feet Wetwell Diameter: 10 Feet Highpoint Elevation: 940.83 Feet Tie -In Elevation: 901.22 Feet Pump Elevation: 911.00 Feet (Approx. — Actual elevation approximately 912.20 at MH) Elevation Difference: 29.83 Feet (940.83 — 911.00) Preliminary Pump Selection: 375 gpm @ 51 Feet TDH Newton's Standard Pump Manufacturer: Flygt, Inc. Ce4RQAS ''ri 4 SEAL e 6��Zb