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Home My WebLink AboutNC0072729_Permit Issuance_20110103e�� NCDENR North Carolina Department of Environment and Division of Water Quality Beverly Eaves Perdue Coleen H. Sullins Governor Director Mr. Mike Molting USDI/National Park Service 199 Hemphill Knob Rd Asheville, N.C. 28803 Dear Mr. Molling: January 3, 2011 Natural Resources Dee Freeman Secretary Subject: Issuance of NPDES Permit NC0072729 Mt. Pisgah Lodge & Recreation Area WWTP Haywood County Division personnel have reviewed and approved your application for renewal of the subject permit. Accordingly, we are forwarding the attached NPDES discharge permit. This permit is issued pursuant to the requirements of North Carolina General Statute 143-215.1 and the Memorandum of Agreement between North Carolina and the U.S. Environmental Protection Agency dated October 15, 2007 (or as subsequently amended). This final permit includes the following changes from the draft permit sent to you on November 10, 2010: ➢ The typo you noted on the supplement to Permit Cover Page was corrected. ➢ The toxicity testing requirements were corrected to show the test months in chronological order. If any parts, measurement frequencies or sampling requirements contained in this permit are unacceptable to you, you have the right to an adjudicatory hearing upon written request within thirty (30) days following receipt of this letter. This request must be in the form of a written petition, conforming to Chapter 150B of the North Carolina General Statutes, and filed with the Office of Administrative Hearings (6714 Mail Service Center, Raleigh, North Carolina 27699-6714). Unless such demand is made, this decision shall be final and binding. Please note that this permit is not transferable except after notice to the Division. The Division may require modification or revocation and reissuance of the permit. This permit does not affect the legal requirements to obtain other permits which may be required by the Division of Water Quality or permits required by the Division of Land Resources, the Coastal Area Management Act or any other Federal or Local governmental permit that may be required. If you have any questions concerning this permit,`please contact Charles Weaver at telephone number (919) 807-6391. Sincerely, Coleen H. Sullins cc: Central Files �r Asheville Regional Office/Surface Water Protection NPDES Unit 1617 Mail Service Center, Raleigh, North Carolina 27699-1617 One. 512 North Salisbury Street, Raleigh, North Carolina 27604 N� Carolina Phone: 919 807.6300 / FAX 919 807-6495/http://portal.ncdonr.org/Web/wq .o r thiCar tin An Equal Opportunity/Affirmative Action Employer- 50%Recyclecill0% Post Consumer Paper i7/�r/a L : Permit NC0072729. STATE OF NORTH CAROLINA DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES DIVISION OF WATER QUALITY PERMIT TO DISCHARGE WASTEWATER UNDER THE NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM In compliance with the provision of North Carolina General Statute 143-215.1, other lawful standards and regulations promulgated and adopted by the North Carolina Environmental Management Commission, and the Federal Water Pollution Control Act, as amended, the USDI- National Park Service Blue Ridge Parkway . is hereby authorized to discharge wastewater from a facility located at the Mount Pisgah Lodge and Recreational Area WWTP Mt. Pisgah Developed Area Blue Ridge Parkway, Milepost 407.8 Haywood County to receiving waters designated as an unnamed tributary to Pisgah Creek in subbasin 04-03-05 of the French Broad River Basin in accordance with effluent limitations, monitoring requirements, and other conditions set forth in Parts I. II, III and IV hereof. This permit shall become effective February 1, 2011. This permit and authorization to discharge shall expire at midnight on January 31, 2016. .Signed this day January 3, 2011. -f/Coleen H. Sullins., Director ar Division of Water Quality By Authority of the Environmental Management Commission Permit NCO07.2729 SUPPLEMENT TO PERMIT COVER SHEET All previous NPDES Permits issued to this facility, whether for operation or discharge are hereby revoked. As of this permit issuance, any previously issued permit bearing this number is no longer effective. Therefore, the exclusive authority to operate and discharge from this facility arises under the permit conditions, requirements, terms, and provisions included herein. USDI=Natiorial Park Service / Blue Ridge Parkway -is hereby *auth6rized to: 1. Continue to operate an existing 0.032 MGD wastewater treatment facility that includes the following components: ➢ Manual bar screen 9 . ➢ Dual 8000-gallon flow equalization basins with three 50-gpm pumps each ➢ Dual 30-cfm blowers ➢ Dual train package WWTP, with each train containing: • 19, 000-gallon aeration basin • Clarifier • 8500-gallon aerated sludge holding tank ➢ Rotating cloth filter ➢ UV disinfection ➢ Effluent flow meter The facility is located at the Mt. Pisgah Lodge and Recreation Area WWTP in the Mt. Pisgah Developed Area on the Blue Ridge Parkway in Haywood County. 2. Discharge from said treatment works at the location specified on the attached map into an unnamed tributary to Pisgah Creek, currently classified WS-III Trout waters in hydrologic unit 06010106 of the French Broad River Basin. Latitude: 35`24'38" Facilit Longitude 83"45'30" NCO072729 y Quad. Cruuq N.C. Location .. Stream Class. \riff 111 Trout Mt. Pisgah Lodge & Subbasin: 04-03-05 Recreation Area - Receiving Stream: UIPisgah Creck Haywood County River Basin: Drench Broad Map not to scale I Ivdrolopjc Unit: 06010106 Permit NCO072729 A. (1) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS During the period beginning on ,the effective date of this permit and lasting until expiration, the Permittee is authorized to discharge from outfall 001. Such discharges shall be limited and monitored by the Permittee as specified below: PARAMETER LIMITS MONITORING REQUIREMENTS [PCS code] Monthly Average Daily Maximum Measurement Sample Sample Frequency Type Locatlonl Flow 0.032 MGD Continuous Recording Influent or [500501 Effluent BOD, 5 day (204C) 30.0 mg/L 45.0 mg/L Weekly Composite Effluent CO310 Total Suspended Solids 30.0 mg/L 45.0 mg/L Weekly Composite Effluent CO530 ' NH3 as N Weekly Composite Effluent C0610 Dissolved Oxygen Daily average > 2.0 mg/L Weekly Grab Effluent 00300 Dissolved Oxygen Weekly Grab U & D 40300 Fecal Coliform (geometric mean) 200/100 ml 400/100 ml Weekly Grab Effluent 31616 Total Residual Chlorine (TRC)2 28 jrg/L 2/Week Grab Effluent 50060 Temperature (4C) Daily Grab Effluent Q0010 Temperature (°C) Weekly Grab U & D 00010 Chronic Toxicity3 Quarterly Composite Effluent GP36 pH > 6.0 and < 9.0 standard units Weekly Grab Effluent 40400 Footnotes: 1. U: at least 100 feet upstream from the outfall. D: at least 300 feet downstream from the outfall. 2. Limits and monitoring apply only if chlorine is used for disinfection. The facility shall report all effluent TRC values reported by a NC certified laboratory including field certified. However, effluent values below 50 ug/L will be treated as zero for compliance purposes. 3. Chronic Toxicity (Ceriodaphnia) P/F at 25 %: August, November, February, and May (see A. (2)). There shall be no discharge of floating solids or visible foam in other than trace amounts. ...... _ ... Permit NCO072729 A. (2) CHRONIC TOXICITY PERMIT LIMIT (Quarterly) The effluent discharge shall at no time exhibit observable inhibition of reproduction or significant mortality to Ceriodaphnia dubia at an effluent concentration of 25 %. The permit holder shall perform at a minimum, quarterly monitoring using test procedures outlined in the "North Carolina Ceriodaphnia Chronic Effluent Bioassay Procedure," Revised February 1998, or subsequent versions or "North Carolina Phase II Chronic Whole Effluent Toxicity Test Procedure" (Revised -February 1998) or subsequent versions. The tests will be performed during the months of February, May, August and November. Effluent sampling for this testing shall be performed at the NPDES permitted final effluent discharge below all treatment,processes. If the test procedure performed as the first test of any single quarter results in a failure or ChV below the permit limit, then multiple -concentration testing shall be performed at a minimum, in each of the two following months as described in "North Carolina Phase H Chronic Whole Effluent Toxicity Test Procedure" (Revised -February 1998) or subsequent versions. The chronic value for multiple concentration tests will be determined using the geometric mean of the highest concentration having no detectable impairment of reproduction or survival and the lowest concentration that does have a detectable impairment of reproduction or survival. The definition of "detectable impairment," collection methods, exposure regimes, and further statistical methods are specified in the "North Carolina Phase II ' Chronic Whole Effluent Toxicity Test Procedure" (Revised - February 1998) or subsequent versions. All toxicity testing results required as part of this permit condition will be entered on the Effluent Discharge Monitoring Form (MR-1) for the months in which tests were performed, using the parameter code TGP3B for the pass/fail results and TBP3B for the Chronic Value. Additionally, DWQ Form AT-3 (original) is to be sent to the following address: Attention: NC DENR / DWQ -/ Environmental Sciences -Section 1621 Mail Service Center Raleigh, North Carolina 27699-1621 Completed Aquatic Toxicity Test Forms shall be filed with the Environmental Sciences Branch no later than 30 days after the end of the reporting period for which the report is made. Test data shall be complete, accurate, include all supporting chemical/physical measurements and all concentration/response data, and be certified by laboratory supervisor and ORC or approved designate signature. Total residual chlorine of the effluent toxicity sample must be measured and reported if chlorine is employed for disinfection of the waste stream. Should there be no discharge of flow from the facility during a month in which toxicity monitoring is required, the permittee will complete the information located at the top of the aquatic toxicity (AD test form indicating the facility name, permit number, pipe number, county, and the month/year of the report with the notation of "No Flow" in the comment area of the form. The report shall be submitted to the Environmental Sciences Branch at the address cited above. Should the permittee fail to monitor during a month in which toxicity monitoring is required, monitoring will be required during the following month. Should any test data from this monitoring requirement or tests performed by the North Carolina Division of Water Quality indicate potential impacts to the receiving stream, this permit may be re -opened and modified to include alternate monitoring requirements or limits. NOTE: Failure to achieve test conditions as specified in the cited document, such as minimum control organism survival, minimum control organism reproduction, and appropriate environmental controls, shall constitute an invalid test and will require immediate follow-up testing to be completed no ' later than the last day of the month following the month of the initial monitoring. r United States Department of the Interior NATIONAL PARK SERVICE Blue Ridge Parkway 199 Hemphill Knob Road Asheville, NC 28803-8686 November 30, 2010 NCDENR (NPDES Unit) Division of Water Quality 1617 Mail Service Center Raleigh, North Carolina 27699-1617 NATIOM PARK SEFiV!(� 0M •7111i0� Subject: Draft NPDES Permit NCO072729 Mt. Pisgah Lodge & Recreation Area WWTP Class WW-2 Haywood County Dear Mr. Weaver, I have reviewed the draft permit you sent to the Park on November 10, 2010. I have noted one item of concern that I would like to bring to your attention regarding the plant. 1. On the supplement to permit cover sheg the plant description refers to an 8000 gallon flow equalization basin with three 50-gpm pumps. Upon completion of this project, there will be two 8000 gallon flow equalization basins with three 50-gpm pumps. Sincerely, Michael Mollmg Chief of Maintenance Permit NCO020486 SUPPLEMENT TO PERMIT COVER SHEET All previous NPDES Permits issued to this facility, whether for operation or discharge are hereby revoked. As of this permit issuance, any previously issued permit bearing this number is no longer effective. Therefore, the exclusive authority to operate and discharge from this facility arises under the permit conditions, requirements, terms, and provisions included herein. The U.S. Department of Agriculture (U. S. Forest Service) is hereby authorized to: 1. Continue to operate an existing 0.012 MGD wastewater treatment system that includes the following components: ♦ Influent pump station ♦ Aeration basin ♦ Clarifier ♦ Tablet chlorine disinfection ♦ Chlorine contact basin ♦ Effluent flow monitoring The facility is located northwest of Mills River at the North Mills River Recreation Area WWTP off NCSR 1345 in Henderson County. 2. Discharge from said treatment works at the location specified on the attached map into the North Fork Mills River, currently classified WS-II Trout HQW waters in hydrologic unit 06010105 of the French Broad River Basin. Weaver, Charles From: Frazier, Wanda Sent: Wednesday, November 24, 2010 12:15 PM To: Weaver, Charles Cc: Edwards, Roger; Menzel, Jeff; Pugh, James L.; cindy.moore@ncdenr.gov Subject: NCO072729 Mt. Pisgah DRAFT permit renewal comments / staff rpt Attachments: NCO072729 Mt Pisgah DRAFT permit 2010.doc; NCO072729 Mt Pisgah box 2010.doc; NCO072729 Mt Pisgah expedited fact sheet 2010.doc; NCO072729 4-14-10.pdf; NCO072729 8-19-09.pdf; NCO072729 10-31-07.pdf; 72729 a cover page 2010.doc Hi Charles, Everything looks good. Attached are the three most recent inspection reports and facility info cover page. Here's what I would suggest. Supplement to permit cover page: (see attachment) (An Authorization to Construct was issued on 6-26-08 for a new:) 0.032 MGD WWTP extended aeration dual -train package plant consisting of: manual bar screen; 8000 gallon flow equalization basin with dual 30 cfm blowers and three 50 gpm pumps; dual - train plant with each train consisting of: a 19,000 gpd aeration basin with dual 75 cfm blowers, a clarifier with surface skimmer and sludge returns; 8,500 gallon aerated sludge holding tank, with three 30 cfm blowers for the aerated sludge holding tank; rotating polyester cloth filter rated at 32,000 gpd; UV disinfection system with 2 parallel banks, each rated at 80,000 gpd peak flow; effluent instrumented ultrasonic continuous flow meter; 4-inch effluent discharge pipe; and 80 KW diesel Cummins emergency generator. Map: A new map is probably needed with all of the info listed in the legend. No map was forwarded. There is a very old map in the current permit. Chronic Toxicity: Since this facility is only operated 6 months a year (May -October), would you want to amend the "Quarterly Toxicity monitoring" language to reflect this? I feel that everything else in the attached documents is accurate. Recommendation: ARO recommends renewal of this permit. Let me know if you have questions or comments. The new ARO facility contact will be Jeff Menzel as of 12-1-2010. t .r��Ai IF MOM r MMMI a Q • Q i • Q • • O r • ♦ •O O • / ' i —_—ice r / 39 (� M 0 WON i• 70 ;r 0 3958 J Church]_and ElementarySchool Davidson County Board :.of Education NPDES Permit No. NCO029947 / � 55 Discharges into an U.T. to South o a PBtts Creek, Class "C". 1 ` Located on Hwy 150 in Churchland, N.C. '5o Davidson County D-17-SW w - -�� NVEV �d 11 1, M� 'q S5? 25' 1 S53 2.1 All. TO U.S. ?9, 5?, 6 7o p O tNT[RIOR--GEOLOGICAL SURVEY, RESTON, VJRGINIA-1987 $0p2 - 3C 556000m.� Weaver, Charles From: Weaver, Charles Sent: Wednesday, November 03, 2010 10: To: Frazier, Wanda; Pugh, James L.; cindy.moore@ncdenr.gov Subject: DRAFT permit renewal for NC0072 Attachments: 72729box-2010.doc; 72729 draft.doc; 72729 Expedite Fact Sheet.doc Importance: High This is a class WW-2 permit in Haywood County. The old lagoon system at this facility is being replaced ith a new package plant that includes UV disinfection. This draft will got o Notice on 11/10/2010. Please sen me any comments by 11/29/2010. Thanks, CHW Messages sent to or from this address are subject to he North Carolina Public Records Law. f 4 V, t WIM-3 IN t i ImPall MKII MAI ,i�i I—v ,��i� oil, �ZIN t 311 . . . . . . . . . . . ASHE\1IL CITIZEN Ta ES VOICE OFTHE MOUNTAINS • CrI ZEN-TEMES.com AFFIDAVIT OF PUBLICATION BUNCOMBE COUNTY SS. NORTH CAROLINA Before the undersigned, a Notary Public of said County and State, duly commissioned, qualified and authorized by law to administer oaths, personally appeared Elyse Giannetti, who, being first duly sworn, deposes and says: that she is the Legal Billing Clerk of The Asheville Citizen -Times, engaged in publication of a newspaper known as The Asheville Citizen -Times, published, issued, and entered as first class mail in the City of Asheville, in said County and State; that she is authorized to make this affidavit and sworn statement; that the notice or other legal advertisement, a true copy of which is attached hereto, was published in The Asheville Citizen -Times on the following date: November 14`h , 2010. And that the said newspaper in which said notice, paper, document or legal advertisement was published was, at the time of each and every publication, a newspaper meeting all of the requirements and qualifications of Section 1-597 of the General Statues of North Carolina and was a qualified newspaper within the meaning of Section 1-597 of the General Statues of North Carolina. Signed this 15th day of November, 2010 making Sworn to and subscribed before me the 15th day of My C- 04mission expires the 5`n day of October, 2013. (828) 232-5830 1 (828) 253-5092 FAX - (VOTARY 14 O. HENRY AVE. ( P.O. BOX 2090 1 ASHEVILLE. NC 28802 ( (800) 8004204 fT C) GANNETr RUBLIC &*#R North Carolina Department of Environment and Natural Resources Dhftlon of Environmental Health Beverly Eaves Perdue Terry L Pierce Governor Director NOVEMBER 11, 2010 MEMORANDUM To: Charles Weaver — Through Janes McRight NPDES Unit From: Jim Adams, PE Regional Engineer NCDENR PW S, Asheville Regional Office Subject:. Review of Draft NPDES Permit NCO072729 N. P. S. — MT. PISGAH LODGE AND REC. AREA W WTP HAYWOOD County Response: Dee Freeman Secretary Concur with the issuance of this permit provided the facility is operated, and maintained properly, the stated effluent limits are met prior to discharge, and the discharge does not contravene the designated water quality standards. ❑ Concur with issuance of the above permit, provided the following conditions are met: ❑ Opposes the issuance of the above permit, based on reasons stated below, or attached: iWater Section —JeWca Umm, CIS Comm =0 U.S. KMwjw 70. Swatnam NoM CaroMa 2W8 Rhone: 82&296 M 1 FAX 828-WaG % Intemet ncxl&d&SwaWAdWXMM An 64UW OppotGu*tAB'rrn"Acfcn Er*W Date:rwcma r PERMIT NUMBER: NCO037508 PERIOD ENDING MONTH: 12 - 2006 DMR 12 Month Calculated FACILITY NAME: Moore County Public Utilities - Moore County WPCF CITY: Aberdeen COUNTY: Moore OUTFALL: 001 EFFLUENT REGION: Fayetteville PAGE 5 OF 6 00010 00095 00300 00310 00400 00530 00600 00610 deg c umhos/cm mg/l mg/l su mg/l mg/1 m9/1 Temperature, Specific DO, Oxygen, BOD, 5-Day (20 pH Solids, Total Nitrogen, Total Nitrogen, Water Deg. Conductance Dissolved Deg. C) Suspended (as NI A oma Total Centigrade (as N) 30 30 6.2 1 - 06 15.345161 493.05 10.135161 10.019048 6.9 - 7.55 17.809524 7.48 0 30 30 62 2-06 14.753571 512.85 10.6125 6.95 7.12 - 7.46 8.2 14.9 0 30 30 62 3-06 16.154839 532.956522 10-045161 8.163636 7.29 - 7.49 11.772727 23.1 0 22 30 2 1 4-06 18.486667 492.578947 9.966333 1 10.89 6.89 - 7.33 10.9 11.5 0 22 30 221 5 - 06 20.390323 466.181818 9.814516 11.977273 6.75 - 7.91 18.181818 25.8 0 22 30 2.1 6-06 22.84 427.227273 9.281667 9.390476 7.02 - 7.51 -- 9.857143 9.63 0.208095 22 30 2. 7-06 24.645161 449.5 8.408065 1 7.27619 7.1 - 8.14. 11.904762 19.5 0.02381 22 vn 2 8-06 25.422581 448.565217 8.497419 - 5.278261 7.07 - 7.74 8.26087 21.9 0.026087 ?o 9-06 24.613333 433.8 8.413667 3.647368 7.14 - 7.5 5.842105 20.7 0 10-06 21.487097 472.454545 9.02 1 4.882609 7.15 - 7.44 6.869565 19.8 0 to , 11 - 06 18.66 441.894737 9.431333 8.368421 6.93 - 7.77 10.526316 22.1 1 0 12-06 1) G2 16.532258 445.947368 10.080323 6.977778 6.95 - 7.31 13.166667 19.2 0 IN REPLY REFER TO June 30, 2010 United States Department of the Interior " ICE National Park Service Blue Ridge Parkway 199 Hemphill Knob Road Asheville, North Carolina 28803 Mrs. Dina Sprinkle NC DENR/DWQ/Point Source Branch 1617 Mail Service Center Raleigh, North Carolina 27699-1617 Dear Mrs. Sprinkle: Please find enclosed a renewal package for the Blue Ridge Parkway wastewater treatment facility at Mt. Pisgah Lodge and Recreation Area. As required, I have enclosed two copies of this cover letter, one signed original and two copies of the completed application form, and one signed original and two copies of the waste water treatment plan narrative. A new .032 MGD package plant has been constructed at the Mt. Pisgah site. Upon satisfactory operation of the plant, the current lagoon type system will be disbanded and the reservoir filled to return the site to near pre -lagoon conditions. Should you need any further information or assistance, please contact me at 828-271- 4779, ext. 215. Sincerely, Michael Moping Chief of Maintenance & Engineering Enclosures cc: Mike Ryan, Pisgah District Facility Manager TAKE PRIDEaO�.? 'NAM ERICA�� Project Description For Mt: Pisgah Waste Water Treatment Plant Blue Ridge Parkway Prepared June 2010 The Mt. Pisgah wastewater treatment facility is located 20 miles south of Asheville, North Carolina on the Blue Ridge Parkway. The Blue Ridge Parkway is a part of the National Park Service which is under the Department of Interior. This treatment plant is located at the headwaters of Flat Laurel Creek into which the final processed effluent discharges. The small treatment plant at Mt. Pisgah serves a major visitor use area, which includes a 55-unit hotel, a restaurant, a country store, a multi -unit employee housing area, a 140-site campground, and a 50-site picnic area. Current annual area visitation figures exceed 290,000. The plant discharges seasonally since all of the visitor facilities are closed through the winter. Sewage from area facilities is collected in a network of sewer lines and transported to the wastewater treatment plant for processing. The permitted capacity of the existing plant is 32,000 gallons per day. The average flow for the operating season is 16,500 gallons per day. The current plant configuration consists of a 3-stage lagoon, 5,000-gallon flocculation tank, filter building, chlorination/dechlorination unit, and a sludge dewatering system Solids are presently hauled annually by a licensed hauler to a permitted facility. A new packaged treatment plant system was designed with anticipated construction completion in fall of 2010. This plant will be an extended aeration plant with aeration, clarification, and UV disinfection processes. A sludge thickening basin collects sludge from the treatment process and further thickens and treats the solids before they are pumped out for disposal. Construction of an extended aeration package treatment system in place of the existing system was determined to be the best solution. The new process will produce acceptable effluent quality (low levels of BOD, Total Suspended Solids, and Ammonia). This process also provides greater flexibility for future modifications (if and when future discharge requirements become more stringent) and is relatively easier for the existing personnel to operate since they have prior experience with similar type systems in the area. General Wastewater Treatment Plant Design Requirements Part 1 A. Basis of Design is to meet existing Mt. Pisgah wastewater NPDES Permit and rules and regulations of North Carolina Department of Environment and Natural Resources, Water Quality Divisions (NCDENR, DWQ). 1. Project specified effluent limits are below the NCDENR permit requirement: Effluent BOD 10mg/1 < Effluent SS +/-10 mg/1 < Fecal Coliform 200/100 ML = Geometric mean 30 mg/l 30 mgll (with filtration) 200/100 ML 2. The facility is permitted for a maximum month flow of 32,000 GPD. Package Wastewater Treatment Plant Design Parameters Part 2 A. Background 1. It was the desire of Blue Ridge Parkway/National Park Service staff to eliminate the existing aerated lagoon and pressure filtration system. The NPS desired to proceed with installing a package wastewater treatment system to replace the existing system. 2. The package treatment system consists of the following components/processes: a. Separate flow equalization and pumping. b. Integrated aeration zone, secondary clarifier and waste solids holding tank. C. Air supply blower facility. d. The package treatment facility will include 2 parallel trains; each train to be able to operate independently. 1) The biological/clarification units shall each perform as a single sludge process to obtain BOD removal and nitrification of the wastewater. e. The package treatment facility includes 2 waste solids holding tanks with each tank being able to operate independently. The tankage shall be aerated to provide mixing and ton *nimize odors. B. Design Parameters: The manufacturer is to design the package wastewater system based on the following parameters: 1. Raw Wastewater Characteristics and Service Conditions: a. Design flow:.032 MGD. b. Peak flow:.08 MGD (2.5 peaking factor). C. Nighttime low flow approaches zero (i.e., 10:00 PM - 6:00 AM). d. BODs: 300 mg/l* e. SS: 190 mg/l* f. NH3: 43 mg/l* g. TKN: 60 mg/1* h. Average value from data supplied by NPS for sampling period during the 2005 operating season. i. Service Conditions: 1) Source area is 1 lodge (80 rooms with laundry), 1 restaurant (seating for 80), and a campground with an RV dump station within the Blue Ridge Parkway. 2) Operation is seasonal (April to November). 3) Potable water source: Groundwater. j. Site Environmental Conditions: 1) Temperature: a.) Ambient: i) Minimum: -10 to 16 DegF. ii) Maximum: 85-90 DegF. b.) Wastewater: i) Minimum: 33 DegF. ii) Maximum: 75-80 DegF. 2) Elevation: 4,600 Ft: a.) Prone to lightning strikes. 3) Electrical Power: 120/240 single phase. 2. Effluent Quality from the package wastewater treatment facility: a. BODs: 10 mg/l. b. Suspended solids: 15 mg/l. C. NH3: 12 mg/I. -15 mg/l 3. Flow Equalization and Pumping Process Parameters a. influent flow equalization volume shall be 8,000 gallons minimum effective storage volume between low water cut-off and call for 2 d pump to run. 1) 20 long x 12 wide x 4.5 (4682.5 - 4678) 1080 cubic feet x 7.48 gallons/ft3 = 8078.4 gallons. b. 3 influent pumps provided: 1 dedicated pump per treatment train (2 total); 1 standby valve to pump to either train. 4. Activated Sludge Process Parameters (2 units): a) Design hydraulic retention time: 28 hours. b) Design MLSS: 3,200 mg/1 minimum. c) Design solids retention time: 15 days minimum d) Return activated sludge return rate: 48,000 GPD maximum, each clarifier has an air lift pump rated at 0 to 24,000 GPD e) Aeration zone air supply: 1) Process loads: i. 1.5 lbs of oxygen per LB of BOD removed ii. 4.6 lbs of oxygen per LB ofNH3 removed. 2) Mixing: i. 25 CFM x 1,000 CF of tank volume. 3) Air supply will be based on whichever value of CFM calculated for "a" or "b" is greater. 5. Secondary Clarifier Process Parameters (2 units) a) Minimum depth: 10 Feet minimum. b) Detention time: 4 hours at a flow rate of 32,000 GPD. c) Surface loading rate: maximum of 220 GPD/SF at a flow rate of 32,000 GPD d) Weir overflow rate: maximum of 5,000 GPD/Ft at peak hour flow rate. 6. Air Supply System Parameters a) Site Service Conditions are as follows: Density of air:.0635 LBS/Cu. Ft. (4,600 Ft. C 68 DegF) Transfer efficiency of coarse bubble diffuser: 10%. Inlet temperatures: Nighttime: 10 DegF - 45 DegF. Daytime (summer): 85 DegF - 90 DegF. b) Pressure requirements will be- based on the following parameters: 1) Inlet side: i Atmospheric pressure (elevation 4,600): 12.45 psia. ii Adjust inlet pressure to reflect drop for filter/silencer furnished. 2) System Pressure supply side: i. Diffuser depth. ii. Air distribution loss. Size piping so that loss will not exceed .1 psi iii. Add pressure loss through discharge silencer based on unit furnished. 7. Aerated Solids Holding Tank Parameters (2 units) a) The wasting of solids from the aeration/clarifier system is a manual operation for package plants of this size. The operator will manually adjust valves on the return solids lines and divert all or a portion of the flow to the aerated solids holding tank. Minimum volume of each tank: 8.500 gallons. 10 long x 9.5 max water level x 12 wide. 1200 FT3 x 7.48 gallons/Ft3 = 8,527 gallons. b) Influent waste activated solids concentration from secondary clarifier: Predicated concentration .7-.8%. c) Waste activated solids thickening by decanting supernatant: Predicated concentration 2%. d) Minimum air supply to holding tank: 25 CFM/1,000 CF. e) Aerated solids holding tank volume confirmation: Daily Solids Production: 1200 lbs x Q (MGD) (from NC DENR check list criteria) 1200 lbs x .032 = 38.41bs/day From process modeling solids may be generated at 45 lbs/day higher number will be used. While the % solids transferred from the secondary clarifiers will be in the .75-.8% solids range, the ability to decant the aerated solids holding tank should allow the effective volume of wasted sludge to be in the 2% range (from NCDENR check list criteria) Therefore: 45 lbs/day solids = 2250 lbs/day sludge 02 Converting lbs/day sludge to GPD sludge: 2250 lbs day sludge = 269 gallons per day 8.34lbs day Effective storage volume of both solids holding tanks is: (12ftx 10 ft x 9 ft) 2 x 7.48 = 16,157gallons 16,157 gallons = 60 days +/- » 30 day 269 gallons/day required by NCDENR It is anticipated that the NPS staff will decant the solids holding tanks once a week. Package Ultraviolet Disinfection Design Parameters Part 3 A. Background 1. It was the desire of Blue Ridge Parkway, National Park Service staff, to eliminate the need to continue maintaining a chlorination/dechlorination system for disinfection of the wastewater. The storage and feeding of hypochlorite and sodium bisulfite was reported to be labor intensive. B. Design Parameters: The manufacturer is to design the package UV disinfection system based on the following parameters: 1. UV Influent Characteristics: a) Flow rate: 1) Average: 15,000 - 21,000 GPD. 2) Maximum month: 32,000 GPD. 3) Peak Flow: 80,000 GPD. b) Anticipated fecal coliform concentration: 1) Assume standard municipal secondary treated effluent with a range of 2 x 10^6 - 4 x 10"6 per 100 ml c) Anticipated UV transmittance measured at 253.7 nanometers, using de -ionized water, through a I CM path: 65 %. d) Anticipated total suspended solids concentration from upstream treatment processes: 1) 15-25 mg/1-aeration system without filters. 2) 5-10 mg/1 when filter system is in operation. 2. UV Effluent Limits: a) Maximum fecal coliform concentration: 1) Maximum 30-day average geometric mean of200/100 mg 3. UV system will be designed for outdoor installation, without shelter or supplemental cooling or heating required. 4. The UV equipment will be installed in a stainless steel channel furnished as part of this system. 5. The system generally will be arranged in the following manner: a) Number of lamps in each UV lamp module: 2. b) Number of UV lamp modules: 1 per blank. c) Number of UV banks: 2. d) Manufacturer to confirm and adjust if required, the number of modules and lamps required to meet the effluent limits. 6. The lamp array configuration will be evenly spaced in both horizontal and vertical rows with all lamps parallel to each other and to the effluent flow. 7. Low pressure high intensity bulbs are specified to obtain greater germicidal output at 254 nanometers and increased lamp life. Package Effluent Filtration Design Parameters Part 4 A. Background: 1. Due to site space constraints a package surface filtration unit is being specified. The filtration unit involves the removal of particulate material from the secondary clarifier. A mechanical sieving of the liquid occurs as the wastewater passes through a thin filter material. 2. The effluent filter unit is a 'back-up' solids removal process to insure a low suspended concentration is obtained before final treatment by LTV disinfection. B. Design Parameters: 1. Design flow:.032 MOD. 2. Peak Hydraulic Flow:.08. 3. Influent SS: 15-25 mg/1 4. Manufacturer is to design unit with integral tankage to immerse the surface filtration media and suitable for outdoor installation without shelter or supplemental cooling or heating required. 5. Specified filter material: a) Polyester or polyamide nylon. b) Pore size: 20 uM. 6. The effluent quality from the filter assembly shall meet 10 mg/l. 100 GPM 11.1 GPM - 56 GPM z NNW TIME PEAK i i EACH TRAIN LOW FLOW HOUR 44 GPM-76 GPM 5 CPU - 55 GPM RETURN TO EQUALIZATION AERATED SOLIDS AERATION ZONE CLARIFIER HOLDING TANK NO. 1 ND. 1 NO. 1 EFFLUENT WEIR (6,500 GALLONS) (22'x12'x9.6' SWO) (io DIATYP TO EXISTING LAGOON 2- DUTY RAS 50 GPM AERATED EQUALIZATION BASIN 2 1 2' EQE � L 6' SS 5' SS 8' EQI eBx. M STANDBY ------- MH2 (EFFECTIVE STORAGE 2 1 2 EQE 6,000 GALLON) RAS MH1 NP DUTY 6' PC BAR SCREEN 50 GPM FROM CAMPGROUND ASSEMBLY 2- PO LODGE AND RESTURANf (16' WIDE) (I- OPENING)) 6' PD STANK AERATION ZONE CLARIFIER HOLDING NO. 2 NO. 2 NO. 2 (6.500 GALLONS) (22'x12'x9.6' SWO) (10' CIA), (10' SWRS) SLOWER SCHEDULE UNIT IDENTIFICATION SERVICE 2 1/2- FBWR NO. 1 AERATED EQUALIZATION BASH (DUTY) NO. 2 AERATED EQUALIZATION BASIN (STANDBY) FILTER BYPASS LINE NO. 3 AERATION ZONE SUPPLY (DUTY) TRAIN 1 PROCESS SCHEMATIC NO. 4 AERATION ZONE SUPPLY (DUTY) TRAIN 2 NO. 5 AERATION ZONE SUPPLY (STANDBY UNIT) NO. 6 AERATED SOLIDS HOLDING (DUTY) TANK 1 NO. 7 AERATED SOLIDS HOLDING (DUTY) TANK 2 NO. 6 AERATED SOLI05 HOLDING (STANDBY UNIT) 4695 4690 4865 46M 4675 4870 4' FE EFFLUENT FILTER ASSEMBLY EXISTING UN -NAMED DRAINAGE WAY TO PISGAH CREEK 2 BANKS WITH 2 LAMPS EACH TYPICAL OF EACH TRAIN FLUMEEK-BO m DULY 4- SS STE D19CFU1RGE LOCATION STMIOBY METERING REMAINS THE SAME VAULT UV (3- PALMER-BROWN FLUME) DISINFECTION UNIT IC TOE EAST 11 TR INVERT ELEVATION IN AND OUT HYDRAULIC, PROFILE WILL VARY DEPENDING ON FILTER PISGAH CREEK O 4560t * UNIT SUPPLIED. 100% CONSTRUCTION DOCUMENTS NO SCALE 4689.72 PEAK HOUR FLOW 80.000 GPD An Im 000GNIA SUB salmi ► IX VM OF SUM ORAlYMO Iq 4689.62 MAX MONTH FLOW 32,O00 GPO as*-c" 8ORASON , PROCESS SCHEMATIC 4079 � M. Loom AND =LOT . coma a� G4 HYDRAUUC PROF1 1�i 12 07 BLUE RIDGE PARKWAY �m FACT SHEET FOR EXPEDITED PERMIT RENEWALS This form must be completed by Permit Writers for all expedited permits which do not require full Fact Sheets. Expedited permits are generally simple 100% domestics (e.g., schools, mobile home parks, etc) that can be administratively renewed with minor changes, but can include facilities with more complex issues (Special Conditions, 303(d) listed water, toxicity testing, instream monitoring, compliance concerns). Basic Information for Expedited Permit Renewals Permit Writer/Date Charles H. Weaver— 11/3/2010 Permit Number NCO072729 Facility Name Mt. Pisgah Lodge & Recreation Area WWTP Basin Name/Sub-basin number French Broad / 04-03-05 Receiving Stream Unnamed tributary to Pisgah Creek Stream Classification in Permit WS-III Trout Does permit need Daily Max NH3 limits? No Does permit need TRC limits/language? No — already resent Does permit have toxicity testing? Yes Does permit have Special Conditions? No Does permit have instream monitoring? No Is the stream impaired on 303(d) list)? No Any obvious compliance concerns? No Any permit mods since last permit? Old lagoon system replaced with new package plant. New expiration date 1/31/2016 Comments received on Draft Permit? Most Commonly Used Expedited Language: • 303(d) laneuaee for Draft/Final Cover Letters: "Please note that the receiving stream is listed as an impaired waterbody on the North Carolina 303(d) Impaired Waters List. Addressing impaired waters is a high priority with the Division, and instream data will continue to be evaluated. If there is noncompliance with permitted effluent limits and stream impairment can be attributed to your facility, then mitigative measures may be required". "The facility shall report all effluent TRC values reported by a NC certified laboratory including field certified. However, effluent values below 50 µg/1 will be treated as zero for compliance purposes."