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HomeMy WebLinkAboutWQ0044815_Application (FTSE)_20231013(, ✓� to ���� State of North Carolina Department of Environmental Quality DWR Division of Water Resources FAST TRACK SEWER SYSTEM EXTENSION APPLICATION Division of Water Resources FTA 06-21 & SUPPORTING DOCUMENTATION Application Number: Waoft q 1 5 (to be completed by DWR) All items must be completed or the application will be returned I. APPLICANT INFORMATION: 1. Applicant's name: City of Lexington (company, municipality, HOA, utility, etc.) 2. Applicant type: ❑ Individual ❑ Corporation ❑ General Partnership ❑ Privately -Owned Public Utility ❑ Federal ❑ State/County ® Municipal ❑ Other 3. Signature authority's name: Tom Johnson per 15A NCAC 02T .0106(b) Title: Water Resources Utility Director 4. Applicant's mailing address: 28 West Center Street City: Lexington State: NC Zip: 27292- 5. Applicant's contact information: Phone number: (336) 248-3930 Email Address: TDJohnson@lexin tog nNC.gov II. PROJECT INFORMATION: 1. Project name: Siemens Mobility Gemini Utility Relocations 2. Application/Project status: ® Proposed (New Permit) ❑ Existing Permit/Project If a modification, provide the existing permit number: WQ00 and issued date: For modifications, also attach a detailed narrative description as described in Item G of the checklist. If new construction, but part of a master plan, provide the existing permit number: WQ00 3. County where project is located: Davidson 4. Approximate Coordinates (Decimal Degrees): Latitude: 35.7878' Longitude:-80.2840' 5. Parcel ID (if applicable): 6714-04-63-5895 (or Parcel ID to closest downstream sewer) III. CONSULTANT INFORMATION: 1. Professional Engineer: Joe L. Langston, Jr. License Number: 024128 Firm: HDR Engineering, Inc. of the Carolinas Mailing address: 440 S. Church Street, Suite 1200 City: Charlotte State: NC Zip: 28202-2075 Phone number: (919) 376-5510 Email Address: joe.lanston e,hdrinc,com IV. WASTEWATER TREATMENT FACILITY (WWTF) INFORMATION: 1. Facility Name: Lexington Regional Wastewater Treatment Plant (LRWWTP) Permit Number: NCO055786 Owner Name: Ci of Lexington V. RECEIVING DOWNSTREAM SEWER INFORMATION: 1. Permit Number(s): WQ 2. Downstream (Receiving) Sewer Information: 24 inch ❑ Gravity ® Force Main 3. System Wide Collection System Permit Number(s) (if applicable): WQCS00042 Owner Name(s): City of Lexington FORM: FTA 06-21 Page 1 of 5 VI. 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 HOA/POA Operational Agreement (FORM: HOA) and supplementary documentation as required by 15A NCAC 02T.0115(c) been attached? ❑ Yes [—]No ® N/A 4. Origin of wastewater: (check all that apply): ® Residential (Individually 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 : % Domestic % Commercial % Industrial (See 15A NCAC 02T .0103(20)) If Industrial, 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 cony of flow reduction approval letter with this application 7. Summarize wastewater generated by project: Establishment Type (see 02T.0114(f)) Daily Design Flow of Units Flow gal/ GPD gal/ GPD gal/ GPD gal/ GPD gal/ GPD gal/ GPD Total No Change 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:_ GPD (per 15A NCAC 02T .0114) ➢ Do not include future flows or previously permitted allocations If permitted flow is zero, please indicate why: ❑ Pump Station/Force Main or Gravity Sewer where flow will be permitted in subsequent permits that connect to this line. Please provide supplementary information indicating the approximate timeframe for permitting upstream sewers with flow. ❑ Flow has already been allocated in Permit Number: Issuance Date: ❑ Rehabilitation or replacement of existing sewers with no new flow expected ® Other (Explain): Relocation of existing Force Main and Gravity Sanitary Sewer around Siemens' site FORM: FTA 06-21 Page 2 of 5 VII. GRAVITY SEWER DESIGN CRITERIA (If Applicable) - 02T .0305 & MDC (Gravity Sewers): 1. Summarize gravity sewer to be permitted: Size (inches) Length (feet) Material 8 775 PVC SDR-35 8 95 DI ➢ 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 requirements is not allowed and a violation of the MDC VIII. PUMP STATION DESIGN CRITERIA (If Applicable) — 02T .0305 & MDC (Pump Stations/Force Mains): PROVIDE A SEPARATE COPY OF THIS PAGE FOR EACH PUMP STATION INCLUDED IN THIS PROJECT 1. Pump station number or name: Swearing Creek Pump Station 2. Approximate Coordinates (Decimal Degrees): Latitude: 35.7869' Longitude:-80.2927' 3. Total number of pumps at the pump station: Three 3. Design flow of the pump station: 5.91 millions gallons per day (firm capacity) ➢ This should reflect the total GPM for the pump station with the largest pump out of service. 4. Operational point(s) per pump(s): 3013 gallons per minute (GPM) at 141 feet total dynamic head (TDH) 5. Summarize the force main to be permitted (for this Pump Station): Size (inches) Length (feet) Material 24 3,275 DI If any portion of the force main is less than 4-inches in diameter, please identify the method of solids reduction per MDCPSFM Section 2.01C.l.b. ❑ Grinder Pump ❑ Mechanical Bar Screen ❑ Other (please specify) 6. Power reliability in accordance with 15A NCAC 02T .0305(h)(1): ® Standby power source or ❑ Standby pump ➢ Must have 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 and may not be portable Or if the pump station has an average daily flow less than 15,000 gallons per day 15A NCACO2T.0305(h)(1)(C): ❑ Portable power source with manual activation, quick -connection receptacle and telemetry - or ❑ Portable pumping unit with plugged emergency pump connection and telemetry: ➢ Include documentation that the portable source is owned or contracted by the applicant 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 timefiames, shall be provided as part of this permit application in the case of a multiple station power outage. FORM: FTA 06-21 Page 3 of 5 IX. SETBACKS & SEPARATIONS — (02B .0200 & 15A NCAC 02T .0305(f)): 1. Does the project comply with all separations/alternatives found in 15A NCAC 02T .0305(f) & (a)? ® Yes ❑ No 15A NCAC 02T.0305(f) contains minimum separations that shall be provided for sewer systems: Setback Parameter* Separation Required Storm sewers and other utilities not listed below (vertical) 18 inches 'Water mains (vertical - water over sewer preferred, 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 II impounded reservoirs used as a source of drinking water, and associated wetlands. 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 associated with these waters (see item IX.2) 50 feet **Any other stream, lake, impoundment, or ground water lowering and surface drainage ditches, as well as wetlands associated with these waters or classified as WL. 10 feet Any building foundation (horizontal) 5 feet Any basement (horizontal) 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 ➢ If noncompliance with 02T.0305(ff or (a), see Section X.1 of this application *15A NCAC 02T.0305(g) contains alternatives where separations in 02T.0305(fl cannot be achieved. Please check "yes" above if these alternatives are used and provide narrative information to explain. **Stream classifications can be identified using the Division's NC Surface Water Classifications webpaae 2. Does this project comply with the minimum separation requirements for water mains? ®Yes ❑ No [—]N/A ➢ If no, please refer to 15A NCAC 18C.0906(f) for documentation requirements and submit a separate document, signed/sealed by an NC licensed PE, verifying the criteria outlined in that Rule. 3. Does the project comply with separation requirements for wetlands? ® Yes ❑ No ❑ N/A ➢ Please provide supplementary information identifying the areas of non-conformance. ➢ See the Division's draft separation requirements for situations where separation cannot be met. ➢ No variance is required if the alternative design criteria specified is utilized in design and construction. 4. Is the project located in a river basin subject to any State buffer rules? ❑ Yes Basin name: ® No If yes, does the project comply with setbacks found in the river basin rules per 15A NCAC 02B .0200? ❑ Yes ❑ No ➢ This includes Trout Buffered Streams per 15A NCAC 2B.0202 5. Does the project require coverage/authorization under a 404 Nationwide/individual permits ❑ Yes ® No or 401 Water Quality Certifications? ➢ Please provide the permit number/permitting status in the cover letter if coverage/authorization is required. 6. Does project comply with 15A NCAC 02T.0105(c)(6) (additional permits/certifications)? ® Yes ElNo Per 15A NCAC 02T.0105(c)(6), directly related environmental permits or certification applications must be 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.). 7. Does this project include any sewer collection lines that are deemed "high -priority?" ❑ Yes ® No Per 15A NCAC 02T.0402, "high -priority sewer" means any aerial sewer, sewer contacting surface waters, siphon, or sewers positioned parallel to streambanks that are subject to erosion that undermines or deteriorates the sewer. Siphons and sewers suspended through interference/conflict boxes require a variance approval. ➢ 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 permittee's individual System -Wide Collection permit. FORM: FTA 06-21 Page 4 of 5 X. CERTIFICATIONS: 1. Does the submitted system comply with 15A NCAC 02T, the Minimum Design Criteria for the Permitting of Pump Stations and Force Mains (latest version), and the Gravity Sewer Minimum Design Criteria (latest version) as applicable? ® Yes ❑ No If no, for projects requiring a single variance, complete and submit the Variance/Alternative Design Request application (VADC 10-14) and supporting documents for review to the Central Office. Approval of the request will be issued concurrently with the approval of the permit, and projects requiring a variance approval may be subject to longer review times. For projects requiring two or more variances or where the variance is determined by the Division to be a significant portion of the project, the full technical review is required. 2. Professional Engineer's Certification: I, Joe L. Langston, Jr. attest that this application for Siemens Mobility Gemini Utility Relocations (Professional Engineer's name from Application Item I11.1.) (Project 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 the applicable regulations, 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. Misrepresentation of the application information, including failure to disclose any design non-compliance with the applicable Rules and design criteria, may subject the North Carolina -licensed Professional Engineer to referral to the licensing board. (21 NCAC 56.0701) North Carolina Professional Engineer's seal, signature, and date: ��`� RCN CARD AL - 024128 ' •�U/�Z/Z 3Z3 O • �1�ii.1VGS1O 3. Applicant's Certification per 15A NCAC 02T .0106(b): I, _Tom Johnson , attest that this application for Siemens Mobility Gemini Utility Relocations (Signature Authority Name from Application Item I.3.) (Project Name from Application Item IL1) attest that this application 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. Thomas JohnsonDigitally signed by Thomas Johnson Date: 2023.10.09 16:46:19-04'00' Signature: Date: FORM: FTA 06-21 Page 5 of 5 FN October 12, 2023 N.C. Department of Environmental Quality Division of Water Resources Winston-Salem Regional Office 450 West Hanes Mill Road Suite 300 Winston-Salem, NC 27105 Re: City of Lexington Siemens Mobility Gemini Utility Relocations 15A NCAC 02T .0300 — Sewer Extension Application HDR Project Number 10364909 NC Departmer',. Environmental Quaff ,y Received OCT 13 2023 Winston-Salem Regional Office On behalf of the City of Lexington, enclosed please find the following permit application and supporting documents for the Siemens Mobility Gemini Utility Relocations Project for your review and approval: Two copies of the Fast Track Sewer System Extension Application 2. $600 Application Fee 3. Two (2) Copies of USGS Site Map 4. Two (2) Copies of Aerial Map 5. Two (2) Copies of Preliminary Engineering Report 6. Two (2) Copies of Preliminary Engineering Report Supporting Documentation The proposed project contains 870 LF of 8" gravity sewer and 3,275 LF of 24" force main. This project will not add any flow as these utilities are being relocated outside of planned site development. Should you have any questions or need additional information, please do not hesitate to contact me. Sincerely, HDR Engineering, Inc., of the Carolinas Langston, Jr., E Water/Wastewater Project Manager hdrinc.com 440 S Church Street, Suite 1200, Charlotte, NC 28202-2075 (704)338-6700 Preliminary Engineering Report for City of Lexington Swearing Creek Pump Station Force Main Relocation Project Purpose: The Swearing Creek Pump Station Force Main relocation project includes the relocation of approximately 3,300 Linear Feet (LF) of existing 24" force main due to the construction of a new Siemens Mobility Inc. plant in Lexington, NC. The corridor of the existing force main (from the Swearing Creek Pump Station northeasterly along 25' wide access easement for approximately 1,600 LF to Brown Street (SR 1254); southeasterly along Brown Street (SR 1254) approximately 1,100 LF to the intersection of Brown Street (SR 1254) and Henry Link Road (SR 1318); continue east -southeasterly along Brown Street (SR 1254) approximately 1,000 LF, fifteen feet past the Duke Energy right of way) will be impacted by extensive grading and construction of horizontal and vertical infrastructure for the new Siemens Mobility, Inc. plant and will need to be relocated. Current Operation: The City of Lexington operates and maintains a large wastewater collection system that includes the combined water and sewer operations for the City of Lexington and surrounding portions of Davidson County. The Swearing Creek Pump Station Force Main conveys flow for approximately 50% (4.5 MGD) of the of the City of Lexington service area. The existing force main is a little over 11,000 LF in length and is composed of 24" DIP and 24" PCCP. The force main conveys this flow to the City of Lexington Regional Wastewater Treatment Plant (WWTP). Project Description The relocation of the existing force main begins just outside the Swearing Creek Pump Station. The pump station only can be shut down for approximately 4 to 6 hours (maximum) so the new force main will have to be "wet -tapped" into the existing force main. The new force main will connect to the existing 24" DI force main by installing two 18" x 24" tapping sleeve and valves, bends, fittings, insertion valve, line stop and associated appurtenances and then connect to a new 24" DI force main (See Attachment A). The new 24" DIP force main will be relocated along the southern and eastern portion of the Siemens Mobility, Inc. parcel. The new 24" DIP force main will connect to the existing 24" PCCP force main on Brown Street (described previously). The connection to the PCCP force main will be more complex due to the material of the existing force main at this location. A 24" steel tee will be installed to connect to the new 24" DIP force main and to the existing 24" PCCP force main. While the 24" steel tee is being installed, a temporary bypass will need to be constructed. The bypass will consist of the installation of three (3) - 12" x 24" Tapping Sleeve and Valves on each side of the new 24" steel tee on the existing 24" PCCP force main. The tapping sleeve and valves will be connected to a common 24" header. Also, the installation of 24" insertion valves, and 24" line stop will be required (See Attachment B). The bypass will be operational and/or in -place prior to the 24" steel tee being installed and while the new force main is pressure tested and operational for at least 8 hours, or until the City of Lexington deems this portion of the Swearing Creek Pump Station Force Main operational. No changes are proposed to the operation of the Swearing Creek Pump Station pumps or controls; therefore, no significant change in pump or force main hydraulics is hdrinc.com 440 S Church Street, Suite 1200, Charlotte, NC 28202-2075 (704)338-6700 Page 1 of 2 anticipated. Additionally, the C-Factor roughness coefficient for the existing concrete pipe is approximately between 100 and 120 and the C-Factor Roughness Coefficient for the new DIP force main (with Protecto 401) is approximately between 120 and 130. For comparison and calculation purposes (worst case), a C Factor of 100 will be used for both new and existing force mains. The existing force main from the tie-in location at the Swearing Creek Pump Station to the point 15 feet east of the Duke Energy Right of Way (previously described) is approximately 3,700 feet in length, while the route of the new DIP force main (along the southern and eastern portion of the Siemens Mobility, Inc. parcel) is approximately 3,275 feet in length for 24" force main and approximately 100 feet for the new 18" force mains at the tie-in location. After converting bends and fittings along the new force main and along the existing force main to equivalent lengths, the overall existing force main increased to 3,880 feet and the new force main 24" and 18" force mains increased to 3,727 feet and 524 feet, respectively. Dia. Material Volume Velocity Length C- Ft. Head Total (Inches) (GPM) for (Ft/Sec) (Ft) Factor Loss Loss Head comparison per (Feet) Loss only) 1,000 (Feet) Feet 24" DI 3,125 2.22 1,660 100 1.16 1.92 24" PCCP 3,125 2.22 2,220 100 1.16 2.58 4.50 18" DIP 1,563 1.93 524* 100 1.31 .686 24" DIP 3,125 2.22 3,727 100 1 1.16 4.32 5.01 *524 LF is a combination of both 18" DIP force mains to the single connection point on the new 24" force main. As shown above, the additional length will not significantly change the total dynamic head of the pumps at the Swearing Creek Pump Station. During temporary bypassing operation (please see the attached spreadsheet), the bypassing has been calculated to add approximately (worst case) 10 feet of head. CAR Q 0241 L 28 _ `'40"0Q�NEE�•' �Q-•�e �IVGSTON' hdrinc.com 440 S Church Street, Suite 1200, Charlotte, NC 28202-2075 (704) 338-6700 Page 2 of 2 I R- X ;!1112001 00 V— L— X C\j "0 �Oft Rangan loop U. 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