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HomeMy WebLinkAboutNC0024970_Application (ATC)_20191014 APPLICATION FOR AUTHORIZATION TO CONSTRUCT PERMIT (FORM ATC-12-14) Application for Authorization to Construct Permit (FORM ATC-12-14) Page 1 State of North Carolina Department of Environmental Quality Division of Water Resources SECTION 1: INSTRUCTIONS AND INFORMATION A. The Division of Water Resources will accept this application package for review only if all of the items are provided and the application is complete. Failure to submit all of the required items will result in the application package being returned as incomplete per 15A NCAC 02T .0105(b). B. Plans and specifications must be prepared in accordance with 15 NCAC 02H. 0100, 15A NCAC 02T, North Carolina General Statute 133-3, North Carolina General Statute 143-215.1, and Division of Water Resources Minimum Design Criteria for NPDES Wastewater Treatment Facilities. C. The plans and specifications submitted must represent a completed final design that is ready to advertise for bid. D. Any content changes made to this Form ATC-12-14 shall result in the application package being returned. E. The Applicant shall submit ONE ORIGINAL and ONE DIGITAL COPY (CD) of the application, all supporting documentation and attachments. All information must be submitted bound or in a 3-ring binder, with a Section tab for each Section, except the Engineering Plans. F. Check the boxes below to indicate that the information is provided and the requirements are met. G. If attachments are necessary for clarity or due to space limitations, such attachments are considered part of the application package and must be numbered to correspond to the item referenced. H. For any project that requires review under the State Environmental Policy Act (SEPA), an Authorization to Construct cannot be issued prior to the completion of a State Clearinghouse advertisement period for a FONSI, EIS, etc. unless the project qualifies for a Determination of Minor Construction Activity. I. For more information, visit the Division of Water Resources web site at: https://deq.nc.gov/about/divisions/water-resources/water- resources-permits/wastewater-branch/npdes-wastewater/authorization-to-construct. J. In addition to this Authorization to Construct, the Applicant should be aware that other permits may be required from other Sections of the Division of Water Resources (for example: reclaimed water facilities permits; Class A or B biosolids residuals permit). SECTION 2: APPLICANT INFORMATION AND PROJECT DESCRIPTION A. APPLICANT Applicant’s name Charlotte Water Signature authority’s name per 15A NCAC 02T .0106(b) David Czerr Signature authority’s title Interim Director Complete mailing address 5100 Brookshire Blvd., Charlotte, NC 28216 Telephone number (704) 391-5159 Email address dwczerr@ci.charlotte.nc.us B. PROFESSIONAL ENGINEER Professional Engineer’s name Peter Schuler Professional Engineer’s title Vice President North Carolina Professional Engineer’s License No. 19323 Firm name Brown and Caldwell Firm License number F-0785 Complete mailing address 309 E. Morehead St. Suite 160, Charlotte, NC 28202 APPLICATION FOR AUTHORIZATION TO CONSTRUCT PERMIT (FORM ATC-12-14) Application for Authorization to Construct Permit (FORM ATC-12-14) Page 2 State of North Carolina Department of Environmental Quality Division of Water Resources Telephone number 704.373.7111 Email address pschuler@brwncald.com C. NPDES PERMIT NPDES Permit number NC0024970 Current Permitted flow (MGD) – include permit flow phases if applicable 64.0 MGD Monthly Average D. PROJECT DESCRIPTION Provide a brief description of the project: The Charlotte Water design-build McAlpine Creek Wastewater Management Facility (WWMF) Reliability and Process Improvements (RPI) Project includes improvements to the secondary treatment processes. The overall project includes secondary clarifier equipment replacement, aeration tank equipment replacement, upgrades to the process aeration blower facilities, miscellaneous hydraulic improvements, biological process modeling, hydraulic modeling, process aeration modeling and unit process condition assessments. Construction Package CP-4A includes modifications to Aeration Tanks (ATs) 15 through 19. The project includes replacement of the existing anerobic zone mixer with top-mounted hyperboloid mixer to improve the mixing efficiency. The existing AT aeration system will be upgraded to include new flexible membrane disc diffusers, new process control instrumentation, new overhead process aeration piping, and installation of new aeration control valves within each AT to enhance process control and increase aeration efficiency. Other AT improvements include replacement of the effluent weir and AT effluent channel ferric chloride feed point as well as structural repairs to the tank walls. The CP-4A project includes HVAC and electrical upgrades to Building 10 which provide the power and instrumentation controls to ATs 15 – 19. SECTION 3: APPLICATION ITEMS REQUIRED FOR SUBMITTAL FOR ALL PROJECTS A. Cover Letter The letter must include a request for the Authorization to Construct; the facility NPDES Number; a brief project description that indicates whether the project is a new facility, facility modification, treatment process modification, or facility expansion; the construction timeline; and a list of all items and attachments included in the application package. If any of the requirements of 15 NCAC 02H. 0100, 15A NCAC 02T, North Carolina General Statute 133-3, North Carolina General Statute 143-215.1, and Division of Water Resources Minimum Design Criteria for NPDES Wastewater Treatment Facilities are not met by the proposed design, the letter must include an itemized list of the requirements that are not met. B. NPDES Permit Submit Part I of the Final NPDES permit for this facility that includes Part A (Effluent Limitations and Monitoring Requirements) for the monthly average flow limit that corresponds to the work that is requested for this project. C. Special Order by Consent If the facility is subject to any Special Orders by Consent (SOC), submit the applicable SOC. Not Applicable. APPLICATION FOR AUTHORIZATION TO CONSTRUCT PERMIT (FORM ATC-12-14) Application for Authorization to Construct Permit (FORM ATC-12-14) Page 3 State of North Carolina Department of Environmental Quality Division of Water Resources D. Finding of No Significant Impact or Record of Decision Submit a copy of the Finding of No Significant Impact or Record of Decision for this project. Provide a brief description of any of the mitigating factors or activities included in the approved Environmental Document that impact any aspect of design of this project, if not specified in the Finding of No Significant Impact or Record of Decision. ___________________________________________________________________________________________ ___ Not Applicable. E. Engineering Plans Per 15A NCAC 02T .0504(c)(1), submit one set of detailed plans that have been signed, sealed and dated by a North Carolina Licensed Professional Engineer. Per 21 NCAC 56 .1103(a)(6), the name, address and License number of the Licensee’s firm shall be included on each sheet of the engineering drawings. Plans must be labeled as follows: FINAL DRAWING – FOR REVIEW PURPOSES ONLY – NOT RELEASED FOR CONSTRUCTION. 15A NCAC 02H .0124 requires multiple (dual at a minimum) components such as pumps, chemical feed systems, aeration equipment and disinfection equipment. Is this requirement met by the design? Yes or No. If no, provide an explanation: This requirement is satisfied by the WWMF 28 aeration tanks (ATs). The CP4A project includes modifications to 5 ATs and the remaining 23 ATs will be modified under later construction packages. Plans shall include: Plans for all applicable disciplines needed for bidding and construction of the proposed project (check as appropriate): Civil Not Applicable Process Mechanical Not Applicable Structural Not Applicable Electrical Not Applicable Instrumentation/Controls Not Applicable Architectural Not Applicable Building Mechanical Not Applicable Building Plumbing Not Applicable Plan and profile views and associated details of all modified treatment units including piping, valves, and equipment (pumps, blowers, mixers, diffusers, etc.) Are any modifications proposed that impact the hydraulic profile of the treatment facility? Yes or No. If yes, provide a hydraulic profile drawing on one sheet that includes all impacted upstream and downstream units. The profile shall include the top of wall elevations of each impacted treatment unit and the water surface elevations within each impacted treatment unit for two flow conditions: (1) the NPDES permitted flow with all trains in service and (2) the peak hourly flow with one treatment train removed from service. Are any modifications proposed that impact the process flow diagram or process flow schematic of the treatment facility? Yes or No. If yes, provide the process flow diagram or process flow schematic showing all modified flow paths including aeration, recycle/return, wasting, and chemical feed, with the location of all monitoring and control instruments noted. F. Engineering Specifications Per 15A NCAC 02T .0504(c)(2), submit one set of specifications that have been signed, sealed and dated by a North Carolina Licensed Professional Engineer. APPLICATION FOR AUTHORIZATION TO CONSTRUCT PERMIT (FORM ATC-12-14) Application for Authorization to Construct Permit (FORM ATC-12-14) Page 4 State of North Carolina Department of Environmental Quality Division of Water Resources Specifications must be labeled as follows: FINAL SPECIFICATIONS – FOR REVIEW PURPOSES ONLY – NOT RELEASED FOR CONSTRUCTION. Specifications shall include: Specifications for all applicable disciplines needed for bidding and construction of the proposed project (check as appropriate): Civil Not Applicable Process Mechanical Not Applicable Structural Not Applicable Electrical Not Applicable Instrumentation/Controls Not Applicable Architectural Not Applicable Building Mechanical Not Applicable Building Plumbing Not Applicable Detailed specifications for all treatment units and processes including piping, valves, equipment (pumps, blowers, mixers, diffusers, etc.), and instrumentation. Means of ensuring quality and integrity of the finished product including leakage testing requirements for structures and pipelines, and performance testing requirements for equipment. Bid Form for publicly bid projects.- Project is design-build. G. Construction Sequence Plan Construction Sequence Plan such that construction activities will not result in overflows or bypasses to waters of the State. The Plan must not imply that the Contractor is responsible for operation of treatment facilities. List the location of the Construction Sequence Plan as in the Engineering Plans or in the Engineering Specifications or in both: Engineering Specifications Section 01 12 16. H. Engineering Calculations Per 15A NCAC 02T .0504(c)(3), submit one set of engineering calculations that have been signed, sealed and dated by a North Carolina Licensed Professional Engineer; the seal, signature and date shall be placed on the cover sheet of the calculations. For new or expanding facilities and for treatment process modifications that are included in Section 4.C, the calculations shall include at a minimum: Demonstration of how peak hour design flow was determined with a justification of the selected peaking factor. Not Applicable because the WWMF design flows have not changed. Influent pollutant loading demonstrating how the design influent characteristics in Section 4.B.2 of this form were determined. Not Applicable because WWMF design loading are not changed with construction project and will not change the unit process performance or impact the effluent pollutant loading. Pollutant loading for each treatment unit demonstrating how the design effluent concentrations in Section 4.B.2 of this form were determined. Not Applicable because the upgrades do not modify the unit process design and will not change the effluent pollutant loading. Hydraulic loading for each treatment unit. Not Applicable because no hydraulic changes were made to any treatment units. Sizing criteria for each treatment unit and associated equipment (blowers, mixers, pumps, etc.) – See McAlpine Creek WWMF RPI Aeration Tank Upgrades Preliminary Design Report for sizing of aeration headers and diffuser counts. APPLICATION FOR AUTHORIZATION TO CONSTRUCT PERMIT (FORM ATC-12-14) Application for Authorization to Construct Permit (FORM ATC-12-14) Page 5 State of North Carolina Department of Environmental Quality Division of Water Resources Total dynamic head (TDH) calculations and system curve analysis for each pump specified that is included in Section 4.C.6. – Not applicable because no pumps were specified for this design. Buoyancy calculations for all below grade structures. Not Applicable because no below grade structures are included in design and tanks are existing. Supporting documentation that the specified auxiliary power source is capable of powering all essential treatment units. – Not Applicable because existing plant power will be used including any necessary auxiliary power. However, WWMF has several generators capable of powering all essential treatment units. I. Permits Provide the following information for each permit and/or certification required for this project: Permit/Certification Not Applicable Date Submitted Date Approved Permit/ Certification Number If Not Issued Provide Status and Expected Issuance Date Dam Safety N/A Soil Erosion and Sediment Control N/A USCOE / Section 404 Permit N/A Water Quality Certification (401) N/A USCOE / Section 10 N/A Stormwater Management Plan N/A CAMA N/A NCDOT Encroachment Agreement N/A Railroad Encroachment Agreement N/A Other: J. Residuals Management Plan For all new facilities, expanding facilities, or modifications that result in a change to sludge production and/or sludge processes, provide a Residuals Management Plan meeting the requirements of 15A NCAC 02T .0504(j) and 15A NCAC 02T .0508; the Plan must include: A detailed explanation as to how the generated residuals (including trash, sediment and grit) will be collected, handled, processed, stored, treated, and disposed. An evaluation of the treatment facility’s residuals storage requirements based upon the maximum anticipated residuals production rate and ability to remove residuals. A permit for residuals utilization or a written commitment to the Applicant from a Permittee of a Department approved residuals disposal/utilization program that has adequate permitted capacity to accept the residuals or has submitted a residuals/utilization program application. If oil, grease, grit or screenings removal and collection is a designated unit process, a detailed explanation as to how the oil/grease will be collected, handled, processed, stored and disposed. Not Applicable. APPLICATION FOR AUTHORIZATION TO CONSTRUCT PERMIT (FORM ATC-12-14) Application for Authorization to Construct Permit (FORM ATC-12-14) Page 6 State of North Carolina Department of Environmental Quality Division of Water Resources SECTION 4: PROJECT INFORMATION A. WASTEWATER TREATMENT PLANT FLOW INFORMATION – COMPLETE FOR NEW OR EXPANDING FACILITIES 1. Provide the following flow information: Plant Flows Existing Plant Design 64.0 MGD Current NPDES Permit Limit 64.0 MGD Current Annual Average (past 12 months) 47.9 MGD For Past 12 Months: Start Date: January/2018 End Date: December/2018 For Past 24 Months: Start Date: January/2017 End Date: December/2018 Maximum Month 61.9 MGD 61.9 MGD Maximum Day 104.9 MGD 104.9 MGD Peak Hour 110 MGD 110 MGD APPLICATION FOR AUTHORIZATION TO CONSTRUCT PERMIT (FORM ATC-12-14) Application for Authorization to Construct Permit (FORM ATC-12-14) Page 7 State of North Carolina Department of Environmental Quality Division of Water Resources B. WASTEWATER TREATMENT FACILITY DESIGN INFORMATION – COMPLETE FOR NEW OR EXPANDING FACILITIES AND FOR TREATMENT PROCESS MODIFICATIONS 1. Have all of the requirements of 15 NCAC 02H. 0100, 15A NCAC 02T, North Carolina General Statute 133-3, North Carolina General Statute 143-215.1, and Division of Water Resources Minimum Design Criteria for NPDES Wastewater Treatment Facilities been met by the proposed design and specifications? Yes or No. If no, provide justification as to why the requirements are not met, consistent with 15A NCAC 02T .0105(n): _ _______________ ___ _ ___ 2. Provide the design influent and effluent characteristics that are used as the basis for the project design, and the NPDES permit limits for the following parameters: Parameter Influent Concentration - Current Annual Average (past 12 months) if Available Project Basis of Design NPDES Permit Limits (monthly average) Design Influent Concentration (Must be supported by Engineering Calculations [Section 3.H]) Design Influent Load (Must be supported by Engineering Calculations [Section 3.H]) Design Effluent Concentration and/or Load Ammonia Nitrogen (NH3-N) 27.6 mg/L 23.0 mg/L 12,300 lb/day 1.0 mg/L Summer 1.0 mg/L Summer 1.9 mg/L Winter 1.9 mg/L Winter Biochemical Oxygen Demand (BOD5) 265 mg/L 345 mg/L 184,100 lb/day 4.0 mg/L Summer 4.0 mg/L Summer 8.0 mg/L Winter 8.0 mg/L Winter Fecal Coliform 200 per 100 mL 200 per 100 mL Nitrate + Nitrite Nitrogen (NO3-N + NO2-N) N/A mg/L N/A mg/L Total Kjeldahl Nitrogen 45.9 mg/L Total Nitrogen N/A mg/L N/A mg/L N/A lb/year N/A lb/year Total Phosphorus 5.7 mg/L 6.9 mg/L 3,700 lb/day 2.0 mg/L 2.0 mg/L 1,067 lb/year 1,067 lb/year Total Suspended Solids (TSS) 339 mg/L 440 mg/L 234,900 lb/day 15.0 mg/L 15.0 mg/L 3. Based on the “Project Basis of Design” parameters listed above, will the proposed design allow the treatment facility to meet the NPDES Permit Limits listed above? Yes or No. If no, describe how and why the Permit Limits will not be met: APPLICATION FOR AUTHORIZATION TO CONSTRUCT PERMIT (FORM ATC-12-14) Application for Authorization to Construct Permit (FORM ATC-12-14) Page 8 State of North Carolina Department of Environmental Quality Division of Water Resources 4. Per 15A NCAC 02T .0505(j), by-pass and overflow lines are prohibited. Is this condition met by the design? Yes or No If no, describe the treatment units bypassed, why this is necessary, and where the bypass discharges: 5. Per 15A NCAC 02T .0505(k), multiple pumps shall be provided wherever pumps are used. Is this condition met by the design? Yes or No. If no, provide an explanation: Pumps are not included in this design. 6. Per 15A NCAC 02T .0505(l), power reliability shall be provided consisting of automatically activated standby power supply onsite capable of powering all essential treatment units under design conditions, or dual power supply shall be provided per 15A NCAC 02H. 0124(2)(a). Is this condition met by the design? Yes or No. If no, provide (as an attachment to this Application) written approval from the Director that the facility: Existing plant power supply including standby power will be used.  Has a private water supply that automatically shuts off during power failures and does not contain elevated water storage tanks, and  Has sufficient storage capacity that no potential for overflow exists, and  Can tolerate septic wastewater due to prolonged detention. 7. Per 15A NCAC 02T .0505(o), a minimum of 30 days of residual storage shall be provided. Is this condition met by the design? Yes or No. If no, explain the alternative design criteria proposed for this project in accordance 15A NCAC 02T .105(n): The design does not impact the generation of residuals. 8. Per 15A NCAC 02T .0505(q), the public shall be prohibited from access to the wastewater treatment facilities. Explain how the design complies with this requirement: No modifications were made to existing perimeter controls that prevent access to the facility by the public. 9. Is the treatment facility located within the 100-year flood plain? Yes or No. If yes, describe how the facility is protected from the 100-year flood: Flood walls exist in areas that could be affected. C. WASTEWATER TREATMENT UNIT AND MECHANICAL EQUIPMENT INFORMATION – COMPLETE FOR NEW OR EXPANDING FACILITIES AND FOR MODIFIED TREATMENT UNITS 1. PRELIMINARY AND PRIMARY TREATMENT (i.e., physical removal operations and flow equalization): Treatment Unit No. of Units Type Size per Unit Plan Sheet Reference Specification Reference Calculations Provided? (Yes or No) Manual Bar Screen MGD at peak hourly flow Mechanical Bar Screen MGD at peak hourly flow Grit Removal MGD at peak hourly flow Flow Equalization -- gallons Primary Clarifier Circular ft diameter; ft side water depth Primary Clarifier Rectangular square feet; ft side water depth Other APPLICATION FOR AUTHORIZATION TO CONSTRUCT PERMIT (FORM ATC-12-14) Application for Authorization to Construct Permit (FORM ATC-12-14) Page 9 State of North Carolina Department of Environmental Quality Division of Water Resources 2. SECONDARY TREATMENT (BIOLOGICAL REACTORS AND CLARIFIERS) (i.e., biological and chemical processes to remove organics and nutrients) Treatment Unit No. of Units Type Size per Unit Plan Sheet Reference Specification Reference Calculations Provided? (Yes or No) Aerobic Zones/ Tanks 5 Zones / 5 ATs Activated Sludge 116,300 gallons per zone 46 51 33 Yes Anoxic Zones/ Tanks gallons Anaerobic Zones/Tanks 1 Zone / 5 ATs Activated Sludge 145,400 gallons per zone 46 41 23 No Sequencing Batch Reactor (SBR) -- gallons Membrane Bioreactor (MBR) -- gallons Secondary Clarifier Circular ft diameter; ft side water depth Secondary Clarifier Rectangular square feet; ft side water depth Other 3. TERTIARY TREATMENT Treatment Unit No. of Units Type Size per Unit Plan Sheet Reference Specification Reference Calculations Provided? (Yes or No) Tertiary Clarifier Circular ft diameter; ft side water depth Tertiary Clarifier Rectangular square feet; ft side water depth Tertiary Filter square feet Tertiary Membrane Filtration square feet Post-Treatment Flow Equalization -- gallons Post-Aeration gallons Other 4. DISINFECTION Treatment Unit No. of Units Type Size per Unit Plan Sheet Reference Specification Reference Calculations Provided? (Yes or No) Ultraviolet Light (Parallel; in series) gal/day per bank at peak hourly flow; number of banks; number of lamps/bank Chlorination (Gas; tablet; liquid) gallons of contact tank/unit APPLICATION FOR AUTHORIZATION TO CONSTRUCT PERMIT (FORM ATC-12-14) Application for Authorization to Construct Permit (FORM ATC-12-14) Page 10 State of North Carolina Department of Environmental Quality Division of Water Resources Dechlorination (Gas; tablet; liquid) gallons of contact tank/unit 5. RESIDUALS TREATMENT Treatment Unit No. of Units Type Size per Unit Plan Sheet Reference Specification Reference Calculations Provided? (Yes or No) Gravity Thickening Tank square feet; ft side water depth Mechanical Thickening/ Dewatering dry lb/hour Aerobic Digestion gallons Anaerobic Digestion gallons Composting dry lb/hour Drying dry lb/hour Other 6. PUMP SYSTEMS (include influent, intermediate, effluent, major recycles, waste sludge, thickened waste sludge and plant drain pumps) Location No. of Pumps Purpose Type Capacity of each pump Plan Sheet Reference Specification Reference GPM TDH 7. MIXERS Location No. of Mixers Purpose Type Power of each Mixer (HP) Plan Sheet Reference Specification Reference Aeration Tank 15 1 Anaerobic zone mixing to maintain solids in suspension Top-Mounted Hyperboloid Mixer 3 HP D-10-121 46 41 23 Aeration Tank 16 1 Anaerobic zone mixing to maintain solids in suspension Top-Mounted Hyperboloid Mixer 3 HP D-10-121 46 41 23 APPLICATION FOR AUTHORIZATION TO CONSTRUCT PERMIT (FORM ATC-12-14) Application for Authorization to Construct Permit (FORM ATC-12-14) Page 11 State of North Carolina Department of Environmental Quality Division of Water Resources Aeration Tank 17 1 Anaerobic zone mixing to maintain solids in suspension Top-Mounted Hyperboloid Mixer 3 HP D-10-125 46 41 23 Aeration Tank 18 1 Anaerobic zone mixing to maintain solids in suspension Top-Mounted Hyperboloid Mixer 3 HP D-10-125 46 41 23 Aeration Tank 19 1 Anaerobic zone mixing to maintain solids in suspension Top-Mounted Hyperboloid Mixer 3 HP D-10-125 46 41 23 8. BLOWERS Location No. of Blowers Purpose Type Capacity of each Blower (CFM) Plan Sheet Reference Specification Reference 9. ODOR CONTROL Location No. of Units Purpose Type Plan Sheet Reference Specification Reference D. SETBACKS – COMPLETE FOR NEW WASTEWATER TREATMENT STRUCTURES 1. The minimum distance for each setback parameter to the wastewater treatment/storage units per 15A NCAC 02T .0506(b) are as follows: Setback Parameter Minimum Distance Required from Nearest Treatment/Storage Unit Is Minimum Distance Requirement met by the Design? If “No”, identify Setback Waivers in Item D.2 Below Any habitable residence or place of assembly under separate ownership or not to be maintained as part of the project site 100 ft Yes No Any private or public water supply source 100 ft Yes No Surface waters (streams – intermittent and perennial, perennial waterbodies, and wetlands) 50 ft Yes No Any well with exception of monitoring wells 100 ft Yes No Any property line 50 ft Yes No APPLICATION FOR AUTHORIZATION TO CONSTRUCT PERMIT (FORM ATC-12-14) Application for Authorization to Construct Permit (FORM ATC-12-14) Page 12 State of North Carolina Department of Environmental Quality Division of Water Resources 2. Have any setback waivers been obtained per 15A NCAC 02T .0506(d)? Yes or No. If yes, have these waivers been written, notarized and signed by all parties involved and recorded with the County Register of Deeds? Yes or No. If no, provide an explanation: There are no new structures.