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HomeMy WebLinkAboutWQ0041994_Application (FTSE)_20201001Central Files: APS _ SWP 9/25/2020 Permit Number WQ0041994 Program Category Non -discharge Permit Type Gravity Sewer Extension, Pump Stations, & Pressure Sewer Extensions Primary Reviewer dean.hunkele Coastal SWRule Permitted Flow Facility Facility Name 2018 CDBG Sewer Expansion Location Address Owner Permit Tracking Slip Status Project Type In review New Project Version Permit Classification A Individual Permit Contact Affiliation Major/Minor Region Minor Wilmington County Duplin Facility Contact Affiliation Owner Name Owner Type Town of Magnolia Government - Municipal Owner Affiliation Gwendolyn B. Vann PO Box 459 Dates/Events Magnolia Scheduled Orig Issue App Received Draft Initiated Issuance 9/18/2020 MCDAVID ASSOCIATES, INC. Engineers • Planners • Land Surveyors CORPORATE OFFICE (252) 753-2139 • Fax (252) 753-7220 E-mail: mai@mcdavid-incmm 3714 N. Main Street • P.O. Drawer 49 Farmville, NC 27828 NC Department of Environmental Quality Water Quality Permitting-PERCS Unit 512 N. Salisbury Street, Suite 925 Raleigh, NC 27-664 RECEIVED SEP 18 2020 NCDEQ/0)VIR/WDES Dear Sir or Madam: September 15, 2020 GOLDSBORO OFFICE (919) 736-7630 • Fax (919) 735-7351 E-mail: maigold@mcdavid-ine.com 109 E. Walnut Street • P.O. Box 1776 Goldsboro, NC 27533 RECEIVED SEP 2 4 2020 NCDEQ WILMINGTONRO Subject: Sewer Extension Permit Request Contract No. 1 - Magnolia MHP Sanitary Sewer Improvements 2018 CDBG Infrastructure Sanitary Sewer Project Town of Magnolia We are submitting the following sewer system extension application for the Town of Magnolia, 2018 CDBG Infrastructure Sanitary Sewer Project. The purpose of this project is to construct sewer facilities along Magnolia MHP Lane. This project consists of the following: Approximately 1,250 LF of gravity sewer of various sizes. 2. One (1) Sewage Pump Station (Magnolia MHP Pump Station). 3. Approximately 2,880 LF of six inch force main from the Pump Station into an existing Town of Magnolia manhole. We are submitting the following in this application: Town of Magnolia check # 26525, dated August 10, 2020 in the amount of $480.00, payable to NC Department of Environmental Quality for the application fee. 2. Two (2) copies of the completed Sewer System Extension (Form: SSEA 04-16) Application. 3. There are no wetlands or surface waters within 100 feet of the sewer system extension, therefore a Watershed Classification Attachment (Form: WSCAS01-15)isnot required. See map (Exhibit 8). 4. Flow Tracking/Acceptance Form (Form FTSE 04-16) from the Town of Magnolia. 5. Two (2) sets of plans "Town of Magnolia, 2018 CDBG Infrastructure Sanitary Sewer Project, Contract No. 1 - Magnolia MHP Sanitary Sewer Improvements", dated February 18, 2020, consisting of 26 pages, (MAI Plan File # M-1515 Gold). D805JWM20 I MAGNOLIA-I8-CDBG-I-MAG-MHP-SEWER-EXTENS ION-PERMIT-REQ-LTR-006.wpd 10:47 AM 200916 6. Two (2) sets of contract specifications for "Town of Magnolia, 2018 CDBG Infrastructure Sanitary Sewer Project, Contract No. 1 - Magnolia MHP Sanitary Sewer Improvements", dated February 18, 2020. One compact disc containing plans and specifications. 8. Engineering Calculations for Magnolia MHP Pump Station. The calculations consist of the following: a) Calculated peak flow utilizing the peaking factor formula to determine the peaking factor (Exhibit 1 and Exhibit 2). b) Pump Cycle times and pump run times (Exhibit 1 and Exhibit 2). c) Friction/Total Dynamic Head calculations for Magnolia MHP Sewage Pump Station and system curve analysis (with one pump running and 2 pumps running) (Exhibit 1). d) Force main velocities based on pipe type and flow (Exhibit 1 and Exhibit 3). e) Pump selection information for Magnolia MHP Sewage Pump Station including pump curves plotted with system curves, manufacturers information, and recommended installation guidelines (Exhibit 6). f) Minimum velocities in the sewer extension (Exhibit 1 and Exhibit 3). g) Flotation calculations for Magnolia MHP Sewage Pump Station wet well (Exhibit 4). 9. Downstream Sewer Evaluation (Exhibit 5). 10. Two (2) color copies of a USGS Topographic Map and street level map showing the project area (Exhibit 8 and Exhibit 9). 11. Our power reliability plan requires standby power generator system (Specification Section 16620) that requires a minimum 200 gallon fuel tank with a fuel capacity sufficient to operate the generator system continuously for a minimum of 24 hours at full rated load without having to refuel (Exhibit 7). 12. The environmental assessment and final environmental document (Exhibit 10). Please review the documents and issue permit at your earliest convenience. If you have any questions please contact me. Sincerely, McDavid Associates, Inc. os h . McKeme K-P� Farmville Office JWM/ssw Enclosures cc: Sudie Matthis (w/application) NC D805JWM20 2 MAGNOLIA-I8-CDBG-I-MAG-MHP-SEWER-EXTENSION-PERMIT-REQ-LTR-006.wpd 200916 State of North Carolina I. II. PROJECT INFORMATION: 1. 2. 3. 4. 5. 6. DWR Department of Environmental Quality Division of Water Resources 15A NCAC 02T .0300 — SEWER SYSTEM EXTENSION APPLICATION Dlvlslon of Water Resources SSEA 04-16 & SUPPORTING DOCUMENTATION Application Number: (to be completed by DWR) APPLICANT INFORMATION: 1. Applicant's name: Town of Magnolia 2. Applicant type: ❑ Individual ❑ Corporation ❑ General Partnership ❑ Federal ❑ State ® Municipal 3. Signature authority's name: Gwendolyn B. Vann per 15A NCAC 02T .0106(b) Title: Mayor 4. Applicant's mailing address: PO Box 459 City: Magnolia State: NC Zip: 28453- 5. Applicant's contact information: Phone number: NIM 289-3205 Email Address: 1mayor(a�centurylink.net 111CDEQ/DWR/NPDR,4.3 ❑ Privately -Owned Public Utility ❑ County RECEIVED SEP 18 2020 Project name: 2018 CDBG Infrastructure Sanitary Sewer Project Application/Project status: ® Proposed (New Permit) ❑ Existing Permit/Project If a modification, provide the existing permit number: W000 and issued date: If new construction but part of a master plan, provide the existing permit number: W000 County where project is located: Duplin Approximate Coordinates (Decimal Degrees): Latitude: 34.9052o Longitude:-78.05273o II1. CONSULTANT INFORMATION: 1. Professional Engineer: Joseph W. McKemey License Number: 028431 Firm: McDavid Associates, Inc. Mailing address: PO Drawer 49 City: Farmville State: NC Zip: 27828-0049 Phone number: (252) 753-2139 Email Address: iwm2Amcdavid-inc.com IV. WASTEWATER TREATMENT FACILITY (WWTF) INFORMATION: 1. Facility Name: Magnolia Waste Water Treatment Plant Permit Number: NCO020346 Owner Name: Town of Magnolia V. RECEIVING DOWNSTREAM SEWER INFORMATION: 1. Permit Number(s): Unknown System Wide Collection System Permit Number(s): Owner Name(s): FORM: SSEA 04-16 Page 1 of 6 VI. GENERAL REQUIREMENTS 1. If the Applicant is a Privately -Owned Public Utility, has a Certificate of Public Convenience and Necessity been submitted? ❑ 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 submitted? ❑ Yes ❑No ®N/A 3. If the Applicant is a Home/Property Owners' Association, has an Operational Agreement (FORM: HOA) been submitted? ❑ 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. Is/was an Environmental Assessment required under 15A NCAC 01 C? ® Yes ❑ No If yes, submit the appropriate final environmental document (FONSI, ROD, etc.) 6. Nature of wastewater: 100 % Domestic/Commercial % Other waste — specify: _ % Industrial (See 15A NCAC 02T .0103(20)) 7. Wastewater generated by project: 6180 GPD (per 15A NCAC 02T .0114) Hasa flow reduction been approved under 15A NCAC 02T .0114(f)? ❑ Yes ®No If yes, provide a copy of flow reduction approval letter 8. Summarize wastewater generated by project: Establishment Type Daily Design Flow a,b No. of Units Flow See Attached "Sewer Usage Daily Flow Calculation" Spreadsheet gal/ 6180 GPD gall GPD gal/ GPD gall GPD gall GPD gal/ GPD Total 6180 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 below shall be determined using available flow data, water using fixtures, occupancy or operation patterns, and other measured data. FORM: SSEA 04-16 Page 2 of 6 VII. GRAVITY SEWER DESIGN CRITERIA - 15A NCAC 02T .0305: 1. Summarize Gravity Sewer to be permitted: Size (inches) Length (feet) Material 8 786 PVC, SDR 35 8 410 DIP, Class 51 10 50 DIP, Class 51 VIII. PUMP STATION DESIGN CRITERIA — 02T .0305 & MDC (Pump Stations/Force Mains): COMPLETE FOR EACH PUMP STATION INCLUDED IN THIS PROJECT 1. Pump station number or name: Magnolia MHP Pump Station No. 5 2. Approximate Coordinates (Decimal Degrees): Latitude: 34.9052' Longitude:-78.05273' 3. What is the nearest I00-year flood elevation to the facility? 83.9 feet mean sea level. Source: North Carolina Floodplain Mapping Program (www.ncfloodmgps.com) Is any of the proposed project located within the 100-year flood plain? ❑ Yes ® No 4. If Yes, are the following items provided per 15A NCAC 02T .0305(e): Water -tight seals on all station hatches and manholes; and Control panels vents extend two feet above the 100-year flood plain elevation? ❑ Yes ❑ No ® N/A If No, what measures are being taken to protect them against flooding? 5. Finish grade elevation of the pump station: 127.0 6. Design flow of the pump station: 0.2880 millions gallons per day (firm capacity) 7. Operational point(s) of the pump(s): 200 gallons per minute at 37.7 feet total dynamic head (TDH) 8. Number of pumps provided: 2 9. Number of pump cycles at average daily flow: 2_0 cycles per hour 10. 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: SSEA 04-16 Page 3 of 6 Vill. PUMP STATION DESIGN CRITERIA (continued) 11. Summarize the pump station design elements: Design Element Plan Sheet Reference Specification Reference Power Reliability Source and Associated Elements 10 16620 Screened Wet Well Vent 9 02737.212 Check Valves, Gate Valves, etc. 9 15100.204- 205 Control Panel 10 & 11 13321 Restricted Access Elements (Fence, Wet Well Lock, etc) 8, 9, & 23 02737.209 & 02831 Audible and Visual Alarms 10 & 11 13321.218 Telemetry/SCADA 10 & 11 13321.221 Level Controls 9, 10, & 11 13321.212 Weatherproof Sign with Required Information 11 13321.219 Air Relief Valves 22 02734 12. Summarize the force main to be permitted: Size (inches) Length (feet) Material High Elevation (feet) Discharge Elevation (feet) Pump -Off I Elevation (feet) 6 122 DIP, Class 51 122.3 6 2713 PVC, SDR 21 135.35 6 DIP, Class 52 135.1 130.4 111.18 �y4�� �6 U 13. Air release valve station locations per 15A NCAC 02T .0305(i): Air Release Valve # Station Plan Sheet Reference 1 3+50 13 2 14+73 15 3 26+38 16 FORM: SSEA 04-16 Page 4 of 6 IX. SETBACKS & SEPARATIONS — (02B .0200 & 15A NCAC 02T .0305(t)): 1. Does the project comply with all separations found in 15A NCAC 02T .0305(f) & (g) ➢ 15A NCAC 02T.0305 contains minimum separations that shall be provided for sewers stems: 05�M0 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-1 waters of Class I or Class 11 impounded reservoirs used as a source of drinking water 100 feet "Waters classified WS (except WS-1 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 building 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 36inches ➢ 15A NCAC 02T.0305(g) contains alternatives where separations in 02T.0305(fl cannot be achieved. ➢ **Stream classifications can be identified using the Division's NC Surface Water Classifications webnaee ➢ If noncompliance with 02T.0305(f) 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 02B .0200? ®Yes ❑ No ❑ N/A ➢ This would include Trout Buffered Streams per 15A NCAC 2B.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 Permittine 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 ➢ 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: SSEA 04-16 Page 5 of 6 IX. CERTIFICATIONS: 1. Does the submitted system comply with 15A NCAC 02T, the Minimum Design Criteria for the Permittingof f Pump 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: I, Joseph W. McKemey. P.E. attest that this application for (Professional Engineer's name from Application Item III.1.) 2018 CDBG Infrastructure Sanitary Sewer Project (Facility name from Application Item II.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 this application package and its instructions, as well as all applicable regulations and statutes. 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 143-215.6B, any person who knowingly makes any false statement, representation, or certification in any application package shall be guilty of a Class 2 misdemeanor, yvhich 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: Off• LESS/p :a SEAL 9�'• 2 431 _ 3. Applicant's Certification per 15A NCAC 02T .0106(b): 1, Gwendolyn B. Vann, Mayor, Town of Magnolia attest that this application for (Signature Authority's name & title from Application Item I.3.) 2018 CDBG Infrastructure Sanitary Sewer Project (Facility name from Application Item II.1.) has been reviewed by me and is accurate and complete to the best of my knowledge. 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 fineAot to exceed $10,000 as well as civil penalties up to $25,000 per violation. Signature: Date:y FORM: SSEA 04-16 Page 6 of 6 Sewer Usage Daily Flow Calculation Magnolia 2018 CDBG Infrastructure Sanitary Sewer Project House Number Number of Occupants Number of Bedrooms GPD 114 1 2 240 139 3 2 240 125 5 3 360 126 4 3 360 112 7 3 420 129 2 2 240 130 1 6 3 360 122 2 2 240 127 3 2 240 124 3 2 240 105 3 2 . 240 143 3 2 240 117 2 2 240 115 5 3 360 109 3 2 240 111 1 2 240 113 4 3 360 118 2 2 240 120 1 2 240 121 5 3 360 123 2 1 2 240 141 1 2 1 2 1 240 Total 1 69 1 1 6180 All proposed connections are to residential dwelling units 120 GPD Per Bedroom 60 GPD Per Person, where unit exceeds 2 persons per bedroom Minimum 240 GPD Per Dwelling RECEIVED SEP 18 2020 NCDEQID"NPD `S W:\D10xx_gen\0101x_excel\D1012_gen_excel\JWM\Magn011a\2018 CDBG Infrastructure Project\General\170-Prel Plan Preparation\Cn-1\Plans\ Magnolia MHP Sewer Usage Daily Flow Calculation-002.x1sx 1 5:57 PM, 9/1512020 State of North Carolina Department of Environmental Quality Division of Water Resources Flow Tracking for Sewer Extension Applications (FTSE 10-18) Entity Requesting Allocation: Town of Magnolia Project Name for which flow is being requested: 2018 CDBG Infrastructure SS Project More than one FTSE maybe required for a single project if the owner of the WWTP is not responsible far 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: Town of Magnolia Waste Treatment b. WWTP Facility Permit c. WWTP facility's permitted flow d. Estimated obligated flow not yet tributary to the WWTP e. WWTP facility's actual avg. flow f. Total flow for this specific request g. Total actual and obligated flows to the facility It. Percent of permitted flow used All flows are in MGD 0.25 SEP 0.00618 18 2020 0.105 0.00618 ' 0.11118 44.47 II. 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 / pfl, Avg. Daily Daily Flow, Obligated Available Number) No. MGD MGD Flow, MGD 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): Downstream Permit Number: Page 1 of 6 FTSE 10-18 III. Certification Statement: I Sudie Matthis 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. Title of Signing Page 2 of 6 FTSE 10-18 Exhibit 9 Site Map m.Magnolia MHP Sanitary Sewer Improvements o: 4 Town of ag • . XV' s fa5l \•� S d t e C ♦ i `mo/ 9 :d Si / / N Rat�coad St ��\ g t 9� Pd^ - c c Fa \ GGm.St d771 i s ' .- Dogwood Dr t �v ,t ➢ � , __ram �. �# m _ ." 1 � " Fa,, on St '° t -.i�'o g 9 N N d �N MagnoMagnolia N Google Earth' - ,,, lia N i2020 Google \ ? ''�''t 1000 ft