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HomeMy WebLinkAboutNC0038041_Permit Modification_20090731i Beverly Eaves Perdue Governor IL NCDENR North Carolina Department of Environment and Natural Resources Division of Water Quality Coleen H. Sullins Director Ms. Renae Ward, President PSI Properties, Inc. P.O. Box 2614 Boone, North Carolina 28607 Dear Ms. Ward, July 31, 2009 Dee Freeman Secretary Subject: Issuance of NPDES Permit Modification Permit NCO038041 Laurel Season WWTP Watauga County Division personnel have reviewed and approved your application for modification 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 modification includes no major changes from the draft permit sent to you on June 2, 2009. This permit modification provides for an expansion from 0.0145 MGD to 0.02 MGD. 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. 1617 Mail Service Center, Raleigh, North Carolina 27699-1617 Location: 512 N. Salisbury St Raleigh, North Carolina 27604 One Phone: 919-807-6300 l FAX: 919-807-64921 Customer Service:1-877-623-6748 NofthCarohna Internet: www.ncwvaterquality.org An Equal opportunity 1 Affirmative Action Employer "Y 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 Sergei Chemikov at telephone number (919) 807-6393. Sincerely, Coleen H. Sullins cc: WSRO-Surface Water Protection NPDES File Central Files 1617 Mail Service Center, Raleigh, North Carolina 27699-1617 Location: 512 N. Salisbury St. Raleigh, North Carolina 27604 Phone: 91M07-63001 FAX: 919-807-64921 Customer Service: 1-877-623-6746 Internet: www.ncwa(erquality.org An Equal 0pportunily I Affirmalive Action Employer One NorthCarolina Naturally Permit NCO038041 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 PSI Properties, Inc. is hereby authorized to discharge wastewater from a facility located at the Laurel Seasons WWTP 4092 Highway 105 South Boone Watauga County to receiving waters designated as Laurel Fork in the Watauga 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 September 1, 2009. This permit and authorization to discharge shall expire at midnight on September 30, 2012. Signed this day July 31, 2009. oleen H. Sullins, Director Division of Water Quality By Authority of the Environmental Management Commission f Permit NC0038041 r 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. PSI Properties, Inc. is hereby authorized to: 1. Continue to operate an existing 0.0145 MGD wastewater treatment facility with the following components: • A 2,000 gallon grease tank • Influent bar screen • Aerated influent holding basins • Aeration basin • Clarifier • Jet-Chlor tablet chlorinator • 1-900 Gallon chlorine contact basin • A metabisulfate dechlorination unit o 35 Gallon chemical mixing tank o Pump and 1-900 gallon contact tank This facility is located at Laurel Season WWTP, 4092 Highway 105 South near Boone in Watauga County. 2. Discharge from said treatment works, through Outfall 001, into Laurel Fork classified Class C-Trout waters in the Watauga River Basin, at the location specified on the attached map. 3. After receiving an Authorization to Construct permit from the Division, construct wastewater treatment facilities not to exceed -0.02 MGD design flow. 4. After submitting an Engineer's Certification, discharge from an expanded treatment works at the location specified on the attached map into Laurel Fork, a class C-Trout waters in the Watauga River Basin. PSI Properties, Inc. Laurel Seasons WWTP Facility �rtn Location J Latitude: 36- 12- 20" N State Grid: BOONE Quad not to scale Longitude: 810 43' 15" W Permitted Flow: Receiving Stream: Laurel Fork Drninaee Basin: 0.0145 MGD Watauga River Basin NPDES Petnv[ No_ NC0038041 Stream Class: C-Trout Sub -Basin: 04-02-01 North Watauga County • Permit NCO038041 A. (1) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS [0.0145 MGD] During the period beginning on the effective date of this permit and lasting until expansion or 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 Monthly Average, Daily Maximum Measurement Sample Type Sample Location Frequen Flow 0.0145 MGD Weekly Instantaneous Influent or Effluent BOD, 5-day (20°C) 30.0 mg/L 45.0 mg/L Weekly Grab Effluent Total Suspended Solids 30.0 mg/L 45.0 mg/L Weekly Grab Effluent . Fecal Coliform (geometric mean 200/100 mL 400/100 mL Weekly Grab Effluent Total Residual Chlorine' 28.0 Ng/L 2/week Grab Effluent Temperature Monitor & Report Weekly Grab Effluent pH > 6.0 and < 9.0 standard units Weekly Grab Effluent Footnotes: -1. Facility. shall report all effluent TRC values reported by a NC certified laboratory including field certified. However, effluent values below 50 µg/L will be treated as zero for compliance purposes. There shall be no discharge of floating solids or visible foam in other than trace amounts. Permit NC0038041 , A. (2) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS [0.02 MGD] During the period beginning upon expansion to 0.02 MGD 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 Monthly Average ::: Daily Maximum Measurement . Frequency Sample Type Sample Location Flow 0.020 MGD Continuous Recording Effluent BOD, 5-day (20°C) 30.0 mg/L 45.0 mg/L Weekly Grab Effluent NH3-N, mg/L 19.6 mg/L 35.0 mg/L Weekly Grab Effluent -Total Suspended Solids 30.0 mg/L 45.0 mg/L Weekly Grab Effluent Fecal Coliform (geometric mean 200/100 mL 400/100 mL Weekly Grab Effluent Total Residual Chlorine' 28 pg/L 2/week Grab Effluent Temperature Monitor & Report Weekly Grab Effluent pH > 6.0 and < 9.0 standard units Weekly Grab Effluent Footnotes: 1. Facility shall report all effluent TRC values reported by a NC certified laboratory including field certified. However, effluent values below 50 µg/L will be treated as zero for compliance purposes. Limit applies only if chlorine or chlorine compounds are used for disinfection. There shall be no discharge of floating solids or visible foam in other than trace amounts. DENR/DWQ FACT SHEET FOR NPDES PERMIT DEVELOPMENT NPDES No. NCO038041 Facility Information Applicant/FacilityName: Renae Ward/ Laurel Season WWTP Applicant Address: P.O. Box 2614, Boone, North Carolina 28607 Facility Address: 4092 FE hwa 105 South, Boone, North Carolina Permitted Flow: 0.02 MGD Type of Waste: 100% Domestic. Other Permits : N/A Facility / Permit Status: Class II / Expansion County: Watauga County Miscellaneous Receiving Stream: Laurel Fork Regional Office: Winston-Salem Stream Classification: C-Tr USGS Topo Quad: C11NE 303(d) Listed? No Permit Writer: /Ser ei Chernikov Subbasin: 04-02-01 Date: May 19, 2009 Drainage Area mi : 3.7 Lat. 360 12' 20" N Long. 81 ° 43' 15" W Summer 7 10 cfs 0.74 Winter 7 10 cfs : 1.17 30 2 cfs : 1.85 Averse Flow cfs : IWC (%): 4.02 BACKGROUND: Laurel Season WWTP is a Class II, 100% domestic wastewater treatment system that treats waster from residential development. The FAA for an expansion of this facility has been approved on January 14, 2009. Effluent limits have been established based on the Level B model. The Division of Water Quality determined that the incremental impact of the increased discharge will not result in contravention of applicable water quality standards or loss of the river's designated uses. The Division concluded that expansion of the existing treatment plant and continued discharge to the Laurel Fork is the most feasible alternative. PROPOSED SCHEDULE FOR PERMIT ISSUANCE: Draft Permit to Public Notice: June 2, 2009 (est.) Permit Scheduled to Issue: July 27, 2009 (est.) NPDES CONTACT: If you have questions regarding any of the above information or on the attached permit, please contact Sergei Chemikov at (919) 807-6393. Fact Sheet NPDES NCO038041 Major Mod Page I Winston-Salem Journal Advertising Affidavit Winston-Salem Journal P.O Box 3159 Winston-Salem, NC 27102 NCDENR/DWO/POINT SOURCE BRANCH ATTN: DINA SPRINKLE 1617 MAIL SERVICE CENTER RALEIGH, NC 27699-1617 Account Number 3376309 Date June 05, 2009 Gate Category Description Ad Size Total Cost 06/05/2009 Legal Notices PUBLIC NOTICE North Carolina Environment 2 x 34 L 243.41 Media General Operations, Inc. PUBLIC NOTICE North Carolina Environmental Publisher of the Management CommIsshm/NPDEg Unit 1617 Mail Service Center NCInt2769to Winston-Salem Journal NoticIghj lssuea NPers Wastewater PermN Forsyth County The North Camlire Environmental Management Commission proposes to Issue a NPDFS wastewater discharge permit to the peasants) listed below. Before the undersigned, a Notary Public of Forsyth County, North Carolina, duly written comments r arding the proposed It will be accepted untll10 days afterthe pubns� date commissioned, qualified, and authorized by law to administer oaths, personally appeared of this mdce. The Director of the NC Division of Water Quality DWQ) may hold a public hearing D.H. Stanfield, who by being duly swom deposes and says: that he is Controller of the should there be a significant de gee of public Inter- est. Please mail comments an�/or information re- Winston-Salem Journal, engaged in the publishing of a newspaper known as Winston-Salem ppe� m y Qvlsit theabove WQ atd512 N.iSalisbury Journal, published, issued and entered as second class mail in the City of Winston-Salem, in Street. Ralph. NC to review Irdarmation on nle. Addiuorel irdorma6on on NPDES permits and mis said County and State: that he is authorized to make this affidavit and sworn statement: that noticemyorg, or bycaning(919)JIbsite:. mace may be found on our) 80-63 www.ncwaterquali the notice or other legal advertisement, a true co of which is attached hereto, was g PY The P51 Promrtles reqauested ma r modification to 0.02 MGO) NCm3aDa1 for published in the Winston-Salem Journal on the following dates: (expansion of perml� Laurel Seasons WWrP in WeCounty; this facility discharge Is treated domestic wastewater to laurel Fork, Watauga River Basin 06/05/2009 WSJ: June S, 2009 and that the said newspaper in which such notice, paper document, or legal advertisement was published was, at the time of each and every such publication, a newspaper meeting all the requirements and qualifications of Section 1-597 of the General Statutes of North Carolina and was a qualified newspaper within the meaning of Section 1-597 of the General Statutes of North Carolina. This 5th day of June, 2009 ` /1 (signature ofierkon at ki affidavit) Swom to and subscribed before me, this Sth day of June, My Commission expires Lv I o THIS IS NOT A BILL. PLEASE PAY FROM INVOICE. THANK YOU hernikov. Seraei From: Tedder, Steve Sent: ay 18, 2009 2:20 PM To: Chernikov, Sergei Cc: White, Sue Subject: RE: Laurel Seasons Expansion NC0038041 EOKthanks) E-mail correspondence to and from this address may be subject to the North Carolina Public Records Law and may be disclosed to third parties. Steve Tedder Steve.Tedder(@NCDENR.gov NC DENR Division of Water Quality 585 Waughtown Street Winston-Salem, NC 27107 (336)-771-4950 Fax (336) 771-4630 From: Chernikov, Sergei Sent: Friday, May 15, 2009 12:41 PM To: Tedder, Steve Cc: Belnick, Tom Subject: Laurel Seasons Expansion NC0038041 Steve, I just faxed you a letter (3 pages) from the consultant regarding the Laurel Seasons Expansion (NC0038041). Fax contains letter from the POTW and the DOT. I think that based on these letters (refusing connection and the right-of- way) we should proceed with the expansion. It is a very small expansion from 14,500 gpd to 20,000 gpd and they need to expand to accommodate new buildings. Please let me know if you have any questions. Thank you! Sergei Sergei Chernikov, Ph.D. Environmental Engineer II NPDES-West Phone: 919-807-6393, fax 919-807-6495 1617 Mail Service Center Raleigh, NC 27699-1617 Express mail: 512 North Salisbury St. Raleigh, NC 27606 E-mail correspondence to and from this address may be subject to the North Carolina Public Records Law and may be disclosed to third parties. 1 3 3 Ea— � -�1-- � ✓, 3J CIVIL / ENVIRONMENTAL / WATER / WASTEWATER JOHN T. COXEY .{ { . //c CONSULTING ENGINEERING,P.A. 1 May 12, 2009 Mr. Sergei Chernikov, PhD RECEIVE® NCDENR Division of Water Quality NPDES Unit 1617 Mail Service Center Raleigh, North Carolina 27699-1617 Re: Laurel Seasons WWTP Expansion NCO038041 Our file 08023 MAY 14 2009 DENR - WATER OUALITY POINT SOURCE BRANCH Dear Sergei: I have finally received letters from the Town of Boone and NCDOT regarding the comments in your email of March 17, 2009 to me. Copies of these letters are attached. Regarding your other comments, it is correct that wastewater flow is estimated based on water records from the well serving the apartments. We believe the estimates to be fairly accurate and probably less than the water records show, since not all the water enters the treatment system. As would be required by a plant expansion, we would install an effluent flow meter. Regarding a new laundry, I have spoken with the Owner and he is willing to install only two (2) washing machines for use by the apartment residents. This is down from the six (6) washing machines stated in my EAA. Additionally, and it was not mentioned in the EAA, but there are eight (8) existing apartments that already have washing machines in them. Please review this additional information and let me know of your comments. I apologize for the time it has taken to make this reply. Sincerely, John T. Coxey Cons Ming Engineering, P. A. ohm T. Coxey, P. E. JTC/pc Enclosure cc: Darrell Ward w/encl JOHN T. COXEY, P.E. PRESIDENT 53 FOX CHASE RD. WEST ASHEVILLE. N.C. 28804 PHONE (828) 645-4046 FAX (828) 658.1304 STATE OF NORTH CAROLINA DEPARTWNT OF TRANSPORTATION BEVERLY EAVES PERDUE GOVERNUR May 8, 2009 Mr. John T. Coxey, PE 53 Fox Chase Road West Asheville, NC 28804 EUGENE A. CONT4 JR. SECRETARY Re: Potential Encroachments Laurel Seasons Apartments (NC 105) & Green Valley Townhomes (NC 194) Located in Watauga County Dear Mr. Coxey: On April 1, 2009, our office received information concerning possible sewer line extensions for two existing developments. Said developments being identified as Laurel Seasons Apartment, located on NC 105 and Green Valley Townhomes, located on NC 194. In accordance with NCDOT's Policy and Pmcedures for Accommodating Utilities on Highway Rights of Way, the Department would not approve the longitudinal installation of a private sewer line within the right of way limits. Longitudinal sewer line installations would only be permitted in the name of a public utility. Please note that installation along NC 105 could be possible. Construction along NC 194 would be very difficult, due to narrow typical section along this route. If you have any further questions, please feel free to contact me at (828) 265-5380. Sincerely, �s Brandon S. Greer Transportation Technician IV P. O. Box 1460, BOONE, NC 28607 PHONE (828) 265-5380 FAx (828) 265-5414 Public Utilities Department Utilities and Engineering Division Mr. John T Coxey P.E. April 29, 2009 John T Coxey Consulting Engineering Asheville, NC 28804 Dear Mr. Coxey: This letter is to provide clarification to your request inquiring as to the possibility of our facilities accepting wastewater from the proposed Green Valley Townhomes located on NC Highway 194 and the Laurel Seasons Apartments located on NC Highway 105. At this time the Town of Boone has no sewer mains or apparatus located near these areas that could be utilized. As both properties are located several miles outside the Town Limits, the cost to extend the sewer main that distance is not feasible at this time. I hope this information is helpful. If you have any questions, or require any additional information, please feel free to contact me by telephone at 828-268-6250 or via email at rick.miller@townofboone.net. Sincerely, Ricky L. Miller Public Utilities Director xc: Mr. Greg Young, Town Manager 321 E. King Street Boone North Carolina 28607 Telephone (828) 266-1183 questions regarding two projects .s Subject: questions regarding two projects From: Sergei Chernikov <Sergei.Chernikov@ncmail.net> Date: Tue, 17 Mar 2009 11:52:07 -0400 To: jtcengineer@verizon.net John, I have received comments for the Winston-Salem Regional Office regarding two of you projects and I was wondering if you could respond to them. Laural Seasons WWTP expansion Request NCO038041 Couple of comments to add to the Staff Report on this expansion request. The stream in question is very high visibility stream off 105. Numerous complaints over the past several years from landowners adjacent to the stream. Appears the flow is estimated from water use records rather than effluent flow monitoring - Is it true? Current flow is 100% domestic. Due to past history of complaints the addition of laundry may be a concern. - How likely is the inclusion of laundry? The report indicated that DOT would not grant encroachment and that Boone would not accept the WW. Would appear that these_ documents_ should be sought from DOT and Boone_ by the applicant _and provided as support evidence that tying onto municipal is not an option. - Could you please provide these documents to us. The Ponds Expansion Request NCO050610 Some additional comments relating to the staff -report for this expansion request. The growth rate information was based off a 2001 report (Draper). I would think that information to be obsolete and growth numbers should be evaluated using more current information as it accounts for some 176,000 of the new flow requested. - Could you please provide any additional rationale. In addition the EAA list several facilities that will be connecting to the Ponds WWTP..I would think confirmation of this would be essential and the applicant should provide letters to that effect from the other facility owners of Smoketree, Country. House Village, Hawksnest, and Seven Devils as this is 55,000 gallons of the expansion request. - Please provide confirmation letters. There is also an issue between the owners of Echota and the Ponds in relation to ownership of the sewer and pump station form Echota to the Ponds WWTP. This disagreement could make assignment of responsibility of violations problematic by the regulatory agencies thus this issue should be resolved prior to any expansion. - Please provide clarification and documentation regarding this issue. Thank you! Sergei Sergei Chernikov, Ph.D. Environmental Engineer II NPDES-West Phone: 919-807-6393, fax 919-807-6495 1617 Mail Service Center Raleigh, NC 27699-1617 Express mail: 512 North Salisbury St. Raleigh, NC 27606 E-mail correspondence to and from this address may be subject to the North Carolina Public Records Law and may be disclosed to third parties. 1 of 1 3/30/2009 3:08 PM Laural Seasons WWTP expansion Request NCO038041 Subject: Laural Seasons WWTP expansion Request NCO038041 From: Steve Tedder <Steve.Tedder@ncmail.net> Date: Tue, 17 Mar 2009 10:31:40 -0400 To: Sergei Chernikov <Sergei.Chernikov@ncmail.net> CC: Sue White <sue.white@ncmail.net> Sergei, Couple of comments to add to the Staff Report on this expansion request. The stream in question is very high visibility stream off 105. Numerous complaints over the past several years from landowners adjacent to the stream. Appears the flow is estimated from water use records rather than effluent flow monitoring. The EAA did not include the data to support existing flows. Final permit should require effluent flow monitoring. Current flow is 100% domestic. Due to past history of complaints the addition of laundry may be a concern. Appropriate limits and monitoring should be included in permit to gauge discharge impact if this activity is included in the new flows. The report indicated that DOT would not grant encroachment and that Boone would not accept the WW. Would appear that these documents should be sought from DOT and Boone by the applicant and provided as support evidence that tying onto municipal is not an option. Tedder E-mail correspondence to and from this address may be subject to the North Carolina Public Records Law and may be disclosed to third parties. Steve Tedder Steve.Teddergncmail.net NC DENR Division of Water Quality 585 Waughtown Street Winston-Salem, NC 27107 (336)-771-4950 Fax (336) 771-4630 Steve Tedder <Steve.Tedder�u,NCmail.net> WSRO NC DENR 1 of 1 3/1 /2009 11:09 AM Laurel Seasons WWTP NCO038041 Laurel Fork C Trout 040201 Model results show that secondary limits (BOD5=30 mg/1) , both summer and winter, will protect for the expansion to 0.020 MGD. NH3 limits for the protection of oxygen consumption are not needed. The DO standard of 6 mg/1 for the trout classification will be protected in Laurel Fork. Stream flows were revised based on updated yield information from a 2008 USGS memo to the facility's engineer. Revised stream flows were lower than previously calculated in 1987. Jmn 3/16/2009 i SUMMER EXPANSION TO 0.020 MGD, NOTE 7Q10 FLOW SST. LOWER ---------- MODEL RESULTS ---------- Discharger : LAUREL SEASONS WWTP Receiving Stream : LAUREL FORK ---------------------------------------------------------------------- The End D.O. is 8.51 mg/l. The End CBOD is 2.38 mg/l. The End NBOD ---------------------------------------------------------------------- is 2.19 mg/l. WLA WLA WLA DO Min CBOD NBOD DO Waste Flow (mg/1) ------ Milepoint Reach # ---------------- (mg/1) ---- (mg/1) ---- (mg/1) -- ---------- (mgd) Segment 1 7.41 0.00 1 Reach 1 45.00 90.00 0.00 0.02000 Reach 2 0.00 0.00 0.00 0.00000 *** MODEL SUMMARY DATA *** Discharger : LAUREL SEASONS WWTP Subbasin 040201 Receiving Stream : LAUREL FORK Stream Class: C-TROU Summer 7Q10 : 0.74 Winter 7Q10 : 1.17 Design Temperature: 23.0 LENGTH SLOPE VELOCITY DEPTH Kd Kd Ka Ka KN mile ft/mij fps I ft design @200 design @200 design -------------------------------------------------------------------------------- Segment 1 0.84 205.00 0.241 0.47 0.58 0.51 53.37 50.00 0.63 Reach 1 -------------------------------------------------------------------------------- Segment 1 1 0.90 96.00 0.238 1 0.63 1 0.49 1 0.43 143.95 1 41.17 0.63 Reach 2 9 Flow CBOD MOD cf s mg/l mg/1 Segment 1 Reach 1 Waste 0.031 45.000 90.000 Headwaters 0.740 2.000 1.000 Tributary 0.000 2.000 1.000 * Runoff 0.100 2.000 1.000 Segment 1 Reach 2 Waste 0.000 Tributary 0.420 * Runoff 1 0.270 D.O. mg/l 0.000 7.720 7.720 7.720 0.000 0.000 0.000 2.000 1.000 1 7.720 1 2.000 1.000 7.720 * Runoff flow is in cfs/mile SUMMER EXPANSION TO 0.020 MGD, NOTE 7Q10 FLOW BST. LOWER Seg # ! Reach # Seg Mi D.O. CBOD NBOD Flow 1 1 0.00 7.41 3.73 4.58 0.77 1 1 0.04 7.86 3.70 4.53 0.78 1 1 0.08 8.12 3.67 4.48 0.78 1 1 0.12 8.27 3.64 4.44 0.78 1 1 0.16 8.36 3.61 4.39 0.79 1 1 0.20 8.41 3.58 4.35 0.79 1 1 0.24 8.44 3.55 4.30 0.80 1 1 0.28 8.46 3.52 4.26 0.80 1 1 0.32 8.47 3.49 4.22 0.80 1 1 0.36 8.48 3.47 4.17 0.81 1 1 0.40 8.48 3.44 4.13 0.81 1 1 0.44 8.49 3.41 4.09 0.82 1 1 0.48 8.49 3.38 4.05 0.82 1 1 0.52 8.49 3.36 4.01 0.82 1 1 0.56 8.49 3.33 3.97 0.83 1 1 0.60 8.49 3.31 3.93 0.83 1 1 0.64 8.49 3.28 3.89 0.84 1 1 0.68 8.49 3.25 3.85 0.84 1 1 0.72 8.49 3.23 3.81 0.84 1 1 0.76 8.49 3.20 3.78 0.85 1 1 0.80 8.50 3.18 3.74 0.85 1 1 0.84 8.50 3.16 3.70 0.86 1 2 0.84 8.24 2.78 2.81 1.28 1 2 0.93 8.41 2.73 2.74 1.30 1 2 1.02 8.47 2.69 2.67 1.32 1 2 1.11 8.49 2.64 2.60 1.35 1 2 1.20 8.50 2.60 2.53 1.37 1 2 1.29 8.51 2.56 2.47 1.40 1 2 1.38 8.51 2.52 2.41 1.42 1 2 1.47 8.51 2.49 2.35 1.45 1 2 1.56 8.51 2.45 2.30 1.47 1 2 1.65 8.51 2.42 2.24 1.49 1 2 1.74 8.51 2.38 2.19 1.52 Seg # Reach # Seg Mi D.O. CBOD NBOD Flow MODEL INPUTS FOR LEVEL B ANALYSIS GENERAL INFORMATION Facility Name: NPDES No.: Type of Waste: 011 , ` Facility Status: C)a Receiving Stream: l�-r"7 Stream Classification: Subbasin: County: (/qv Regional Office: js v Topo Quad: A C t L,1/tJ aw) ,VC FLOW INFORMATION USGSN Date of Flow Estimates: Drainage Area (mi2): Summer 7Q10 (cfs): Winter 7Q10 (cfs):Average Flow (cfs): Ri 30Q2 (cfs): 1WC at Point of Discharge (%): Cummulative IWC (%): MODEL INPUT INI; ORMATION LENGTH OF REACH (miles) 4. $ '"1 0, INCREMENTAL LENGTH (miles) 4 , 4 WASTE CHARACTERISTICS FLOW (MGD) 0 ow CBOD (mg/1) w— _ NBOD (mg/1) Y10 _ D.O. (mg/1) RUNOFF CHARACTERISTICS 7Q10 (cfs/mil) 2 a,l O d,L QA (cfs/mil) 1,67 3 CBOD (mg/1) 7— NBOD (mg/1) i% D.O. (mg/1) 772 7i 92 TRIBUTARY CHARACTERISTICS 7Q10 (cfs) QA (cfs) CBOD (mg/1) z NBOD (mg/1) D.O. (mg/1) 7 SLOPE (fpm) 205 Name of facility W ufti is l �s USGS x4c,, (i°l Zl/o8) 3.7 Erb . � � c, y741u 3,1 wl c - 3.� Z X 0,7 c4m c�m — "Ss osE _ 0, 2 x �� ` � E.st J7qZ1 Laurel Fork stream sites Drainage area (square miles) summer 7Q10 yield (cfsm) est. summer 7Q10 flow (cfs) 30Q2 yield (cfsm) est. 30Q2 flow (cfs) Discharge pt. End Reach 1 3.7 4.1 0.2 0.2 0.74 0.82 0.5 0.5 1.85 2.05 Start Reach 2 End Reach 2 6.2 7.4 0.2 0.2 1.24 1.48 0.5 0.5 3.1 3.7 summer 7Q10 runoff (cfs/mi) - 0.10 - 0.27 30Q2 runoff (cfs/mi) - 0.24 - 0.67 Upper Laurel Fork 2.1 0.2 0.42 0.5 1.05 a N67E /No4E� SAY oi✓o+�cd �F: �dDRi�4 0y0�2a 03cfg88./f - fW/. wwi l� w7Q,J 1,J gL zoc7.__------ saps roe § 5791,)a avc&l GAU.Z - lb 03 A78F•JSL�— l� OA�37, ynq Cr, S._-�- -- -... E Jf l M�/o: a.3 C4 £5/'w7?/�-A P6 C7� ,y w'V/d : 3. 3 ✓l k1. /�? i/b�c�J fyv 03.Y7s8•/9z �•'� 414, _ �•J = , 0/'/S,f(G� s�`/�E _= i6 S79/J 7/t Id = / = O, 33 C /$G�3-/Igc%S cfs _ _` 7 c_ &�.ni _ w 7Q/� Aia - S7p� eo 9cfr •Y%c�; 33Cis-2.8oi3 9c8 .SS� /'/ls � cYT_ . s7P/o /t/�: U.3/ c�, ... _ . W7.�/J _f3 »„ � OyC�%�M/ _ . .IN7l/7 /0..' . � d'SGTS _._._...._3 0 � _ I �V - %CIS/iNi 0, 6 z bz8 �{a-t is'_ ;/(wC441 1 R, c6 - 4 7c{s _ _` C - 0225 c�S NC0038041Laurel Season WWTP Expansion Permit Application Subject: NC0038041Laurel Season WWTP Expansion Permit Application From: Sue White <Sue.White@ncmail.net> Date: Fri, 23 Jan 2009 14:17:04 -0500 To: Sergei Chernikov <Sergei.Chernikov@ncmail.net>, Steve Tedder <steve.tedder@ncmail.net> Hi Sergei: I reviewed the permit application for NC0038041. First I will say that this expansion is badly needed, both for their existing flow issues and for the fact that this plant was permitted in 1977 and no major upgrades have been done since. It's actually two plants pieced together. Comments: 1. Is the new flow limit of 20,000 GPD going to be sufficient? If their projected flow is 16,800 GPD they're at 84% right off the bat. 2. What parts of the old plant specifically are they planning on using. This plant is not in great shape. Can we require them to do any structural testing of the basins that they're planning on keeping? 3. Can we require them to completely remove any old components that will not be utilized? The habit in the mountains is to put a new plant in and leave the old one sitting there. 4. An effluent flow meter should be required. A staff report was done on this plant in August of 2007, is this current enough? With the exception of the installation of a grease trap nothing has changed since. If not, I will prepare a new one and get it to you. Have a good weekend! Sue White NC DENR Winston-Salem Regional Office Division of Water Quality, Water Quality Section 585 Waughtown Street Winston-Salem, NC 27107 Voice: (336) 771-4966 FAX: (336) 771-4630 "Adventure in itself is Worthwhile" -Amelia Earhart- Sue White <Sue.White(&,,NCmail.net>:`I . WSRO NC DENR 1 of 1 1/23/2009 2:16 PM cc: Permits and Engineeri Technical Support Branch County Health Dept. Central Files W SRO SOC PRIORITY PROJECT: Yes No If Yes, SOC No. To: Permits and Engineering Unit Water Quality Section Date: March 11, 2009 hi a 133M11 W.11i;I1.7 DLK17uTiuTl �1`►117;11Y[1]�I County Watauga Permit No. NCO038041 PART I - GENERAL INFORMATION 1. Facility and Address: Laurel Seasons WWTP 206 PSI Drive Boone, NC 2. Date of Investigation: February 26, 2009 3. Report Prepared by: Sue White 4. Persons Contacted and Telephone Number: Jadd Brewer 828-260-2027 5. Directions to Site: Hwy 105 S from Boone to Laurel Seasons (across from Vulcan Quarry) 6. Discharge Points(s), List for all discharge points: One discharge point into Laurel Fork directly behind the W WTP Latitude: 36d 09' 20"_ Longitude: 81d 46' 19" U.S.G.S. Quad No. C11NE_ U.S.G.S. Quad Name _ Boone 7. Site size and expansion area consistent with application? Yes 8. Topography (relationship to flood plain included): Hilly and rocky 9. Location of nearest dwelling: 25 yards 10. Receiving stream or affected surface waters: Laurel Fork a. Classification C-Trout b. River Basin Watauga and Subbasin No.: 040201 C. Describe receiving stream features and pertinent downstream uses: General useage Part II - DESCRIPTION OF DISCHARGE AND TREATMENT WORKS 1. a. Volume of Wastewater to be permitted: MGD (Ultimate Design Capacity) 0.020 MGD b. What is the current permitted capacity of the Waste Water Treatment facility? 0.0145 MGD C. Actual treatment capacity of the current facility (current design capacity)? 0.0145 MGD d. Date(s) of construction activities allowed by previous A/C's issued in the previous two years. N/a e. Please provide a description of existing or substantially constructed wastewater treatment facilities; existing package plant Aeration Basin Bar Screen Clarifier C12 Chamber Dechlor f. Equalization basin, sludge holding tank, dual train aeration basins and clarifiers. Tertiary filtration system and ultra violet disinfection. g. Possible toxic impacts to surface waters: fecal h. Pretreatment Program (POTWs only): n/a in development approved should be required not needed NPDES Permit Staff Report Version 10/92 Page 2 2. Residuals handling and utilization/disposal scheme: Other disposal/utilization scheme (Specify): Solids pumped on as -needed basis and taken to municipal WWTP 3. Treatment plant classification (attach completed rating sheet). SIC Code(s): 4cj52 Primary C>5 Secondary Main Treatment Unit Code: K PART III - OTHER PERTINENT INFORMATION 1. Is this facility being constructed with Construction Grant Funds or are any public monies involved. (municipals only)? No 2. Special monitoring or limitations (including toxicity) requests: none at this time 3. Important SOC, JOC or Compliance Schedule dates: (Please indicate) n/a Date Submission of Plans and Specifications Begin Construction Complete Construction 4. Alternative Analysis Evaluation: Has the facility evaluated all of the non -discharge options available. Limited space on site. Not suitable for spray or drip. No other plant available to tie into. 5. Other Special Items: N/a PART IV - EVALUATION AND RECOMMENDATIONS -No comments at this time Signature of report preparer Water Quality Regional Supervisor /0 ee� NPDES Permit Staff Report Version 10/92 3 r0,(o15 Date Page 3 WATER POLLUTION CONTROL SYSTEM OPERATORS CERTIFICATION COMMISSION CLASSIFICATION RATING SHEET FOR WATER POLLUTION CONTROL SYSTEMS FACILITY INFORMATION: NAMEOF FACILTfY: LAvV!P-L_ S-:A39"s MAILING ADDRESS: ZCC,=. PS- COUNTY:�T'�UC�A` CONTACT PERSON: TELEPHONE: (8-5) 7-(02' 2,a271 PERMIT NO: NcCC�>3 SCAr Check One: NC ✓ WQ HEALTH DP ORC:�'TELEPHONE: RATING INFORMATION: (Before completing this section, please refer to pages 2-4) PERMITTED FLOW: C>.OI4-S "G MGD BNR? - YES NO ✓ CHECK CLASSIFICATION: WASTEWATER: 1 2 ✓ 3 4 COLLECTION: 1 2 3 4 SPRAY IRRIGATION SUBSURFACE LAND APPLICATION PHYSICALJCHEMICAL GRADE I GRADE H RATED BY: REGION: DATE: 3/1L log REGIONAL OFFICE TELEPHONE NUMBER: (3Bk,-) -1-1 t - 49 U (f EXT: Classification of Biological Water Pollution Control Treatment Systems: Grade I Biological WPCS - Septic tanWsand filter systems - Biological lagoon systems - Constructed wetlands and associated appurtenances Grade II Biological WPCS - Systems that utilize an activated sludge or fixed growth process with a permitted flow less than or equal to 0.5 million gallons per day (mgd) Grade III Biological WPCS - Systems that utilize an activated sludge or fixed growth process with a permitted flow of greater than 0.5 through 2.5 million gallons per day (mgd) - Grade II systems that are required to achieve biological nutrient reduction Grade IV Biological WPCS - Systems that utilizing an activated sludge or fixed growth process with a permitted now of greater than 2.5 million gallons per day (mgd) - Grade III systems that are required to achieve biological nutrient reduction * Biological Nutrient Reduction - The reduction of total nitrogen or total phosphorous by an activated sludge or fixed growth process as required by the facilities permit. Classification of Collection Water Pollution Control Systems: (whichever provides lowest grade) Same grade as biological water pollution control system. Grade of system: Based on population served: 1,500. or Less = Grade I 1,501 to 15,000 = Grade II 15,001 to 50,000 = Grade III 50,001 or more = Grade IV Classification of Spray Irrigation Water Pollution Control Systems: Systems which utilize spray irrigation for the reuse or disposal of wasterwater. These systems include: septic tanks, sand filter, oil/water separators, lagoons, storage basins, screening, sedimentation. Systems other than those listed above shall be subject to additional classification. Classification of Land Application of Residuals Systems: Systems permitted and dedicated for land application of residuals that are produced by a water pollution control system or contaminated soils. Classification of Physical/Chemical Water Pollution Control Treatment Systems: Grade I Physical/Chemical: Any water pollution control system that utilizes a primarily physical process to treat wastewater. This classification includes groundwater remediation systems. ** Grade II Physical/Chemical: Any water pollution control system that utilizes a primarily chemical process to treat wastewater. This classification includes reverse osmosis, electrodialysis, and ultrafiltration systems. ** ** Any water pollution control system that utilizes a phyicaUchemical process to enhance an activated sludge or fixed growth process, shall not be subject to additional classification. Classification of Subsurface Water Pollution Control Systems: Systems which utilize the soil for subsurface treatment and disposal of wastewater and/or are required to have a certified operator under 15A NCAC 18A.1961. *** ***Any subsurface system that has as part of its treatment process a water pollution control systems that may be classified under Rules .0302 through .0307 of this section shall be subject to addional classification. Definitions Activated Sludge - shall mean a biological wastewater treatment process in which predominantly biodegradable polluntants in wastewater are absorbed, or adsorbed by living aerobic organisms and bacteria. Chemical Process - shall mean a wastewater pollution control system process consisting exclusively of the addition of chemicals to treat wastewater. Collection System - shall mean a continuous connections of pipelines, conduits, pumping stations, and other related constructions used to conduct wastewater to the water pollution control system. Electrodialysis System - shallmean a system utlizing a selective separation of dissolved solids process that is based on electrical charge and diffusion through a semipermeable membrane. Physical Process - shall mean any water pollution control system process consisting of electrodialysis, adsorption, absorption, air stripping, gravimetric sedimentation, floation, and filtration as a means of treatment. Reverse Osmosis System - shall mean a system which utilizes solutions and semipermable membranes to separate and treat wastewater. Ultrafiltration System - shall mean a system which_ utilizes a membrane filter to remove pollutants from wastewater. Water Pollution Control System - shall mean any system for the collection, treatment, or disposal of wastewater and is classified under the provision of G.S. 90A-37. Note: Please refer to G.S. 90A-37 for additional information and definitions. CIVIL / ENVIRONMENTAL / WATER / WASTEWATER JOHN T. COXEY CONSULTING ENGINEERING, P.A. January 8, 2009 Ms. Susan Wilson NCDENR Division of Water Quality NPDES Unit 1617 Mail Service Center Raleigh, North Carolina 27699-1617 RECEIVED 'IN 1 2 2009 DENR - WATER OUAWY Re: Engineering Alternatives Analysis POINT SOURCE BRANCH Laurel Seasons Wastewater Treatment Plant Watauga County NC 0038041 Our file 080123 Dear Susan: Attached please find three (3) copies of the above referenced EAA, application check in the amount of $260.00, and Local Government Review Forms from Watauga County and the Town of Boone. The NPDES Application is enclosed in each copy of the EAA. Included in the EAA is a comprehensive soils report obtained from the Watauga Soil and Water Conservation District. This report rates all soils contiguous to the project for rapid irrigation, slow rate treatment, and irrigation. In all cases, soils are rated very poor for on -site disposal. It is hoped that this published information will preclude the necessity for use of a soil scientist for arriving at the same conclusions. The Winston-Salem Regional Office is very aware of these soils and could be contacted for verification. Please review this submittal and notify my office of your comments. Thank you very much. Sincerely, John T. C xey nsulting Engineering, P. A. John T. Coxey, rE JTC/pc Enclosure cc: Darrell Ward w/encl JOHN T. COXEY. P.E. PRESIDENT 53 FOX CHASE RD. WEST ASHEVILLE. N.C. 28804 PHONE (828) 645-4046 FAX (828) 658-1304 Attachment A. Local Government Review Form General Statute Overview. North Carolina General Statute 143-215.1 (c)(() allows input from local governments in the issuance of NPDES Permits for non -municipal domestic wastewater treatment facilities. Specifically, the Environmental Management Commission (EMC) may not act on an application for a new non -municipal domestic wastewater discharge facility until it has received a written statement from each city and county government having jurisdiction over any part of the lands on which the proposed facility and its appurtenances are to be located. The written statement shall document whether the city or county has a zoning or subdivision ordinance in effect and (if such an ordinance is in effect) whether the proposed facility is consistent with the ordinance. The EMC shall not approve a permit application for any facility which a city or county has determined to be inconsistent with zoning or subdivision ordinances unless the approval of such application is determined to have statewide significance and is in the best interest of the State. Instructions to the Applicant Prior to submitting an application for a NPDES Permit for a proposed facility, the applicant shall request that both the nearby city and county government complete this forma The applicant must: ■ Submit a copy of the permit application (with a written request for this form to be completed) to the clerk of the city and the county by certified mail, return receipt requested. ■ If either (or both) local government(s) fails) to marl the completed forma, as evidenced by the postmark on the certified mail card(s), within 15 days after receiving and signing for the certified mail, the applicant may submit the application to the NPDES Unit. ■ As evidence to the Commission that the local government(s) failed to respond within 15 days, the applicant shall submit a copy of the certified mail card along with a notarized letter stating that the local governments) failed to respond within the 15-day period Instructions to the Local Govemnment The nearby city and/or county government which may have or has jurisdiction over any part of the land on which the proposed facility or its appurtenances are to be located is required to complete and return this form to the applicant within 15 days of receipt. The form must be signed and notarized. Name of local Government (City/County) Does the eei1*county have jurisdiction over any part of the land on which the proposed facility and its appurtenances are to be located? Yes [X] No [ ] If no, please sign this forma, have it notarized, and return it to the applicant Does the vWcounty have in effect a zoning or subdivision ordinance? Yes W No [ ] If there is a zoning or subdivision ordinance in effect, is the plan for the proposed facility consistent with the ordinance? Yes (X] No [ ] Date 1 z l 31 / 0 66 Signature j1r'Y (City Manager/County Manager) State of�1111rIII --,County of o\+a o �in, On this S� day of C PIAA2e( personally appeared before me, the said to me known and known to me to be the person described in and who executed the foregoing document and he (or she) acknowledged that he (or she) executed the same and being duly sworn by me, made oath that the statements in the foregoing document are true. __­1 �� _ My Commission expires L�Q �aU 1 .(Signature of Notary ND o G G� • �� m ,o 10 9 C EAA Guidance Document Version: June 23, 2005 q tiG Page 8 of 8 Attachment A. Local Government Review Form General Statute Overview: North Carolina General Statute 143-215.1 (c)(6) allows input from local governments in the issuance of NPDES Permits for non -municipal domestic wastewater treatment facilities. Specifically, the Environmental Management Commission (EMC) may not act on an application for a new non -municipal domestic wastewater discharge facility until it has received a written statement from each city and county government having jurisdiction over any part of the lands on which the proposed facility and its appurtenances are to be located. The written statement shall document whether the city or county has a zoning or subdivision ordinance in effect and (if such an ordinance is in effect) whether the proposed facility is consistent with the ordinance. The EMC shall not approve a permit application for any facility which a city or county has determined to be inconsistent with zoning or subdivision ordinances unless the approval of such application is determined to have statewide significance and is in the best interest of the State. Instructions to the Applicant: Prior to submitting an application for a NPDES Permit for a proposed facility, the applicant shall request that both the nearby city and county government complete this form. The applicant must: ■ Submit a copy of the permit application (with a written request for this form to be completed) to the clerk of the city and the county by certified mail, return receipt requested. ■ If either (or both) local governments) fail(s) to mail the completed form, as evidenced by the postmark on the certified mail card(s), within 15 days after receiving and signing for the certified mail, the applicant may submit the application to the NPDES Unit. ■ As evidence to the Commission that the local government(s) failed to respond within 15 days, the applicant shall submit a copy of the certified mail card along with a notarized letter stating that the local government(s) faded to respond within the 15-day period. Instructions to the Local Government: The nearby city and/or county government which may have or has jurisdiction over any part of the land on which the proposed facility or its appurtenances are to be located is required to complete and return this form to the applicant within 15 days of receipt The form must be signed and notarized. Name of local government /�/l��!% ,�� /�a (City/County) Does the city/county have jnisdiction over any part of the land on which the proposed facility and its appurtenances are to be located? Yes [ ] No [ If no, please sign this form, have it notarized, and return it to the applicant Does I: a ci I county have in effect a zoning or subdivision ordinance? Yes [L- �No [ ] If there ' a zoning or subdivision ordinance in effect, is the plan for the proposed facility consistent with the ordinance? Yes [ ] No [ ] Date,' ,? D ' Signature (Ci /Co ty Manager) w State of �Jorl-h ean2(L��-�Countyof- On this '3 day of Uf - 09appeared before me, the said name b to me known and known to me to be the person described in and who executed fo ing docum t and he (or she) acknowledged that he (or she) executed the same and being duly sworn by me, made oath that the statements in the foregoing document are true. M Commission ices (Signature of No Public y e • I$pc (Official SeaD < owl �V� EAA Guidance Document version: June 23, 2oo5r.,,��G Page 8 of 8 i�� 9A V`_ `�� 0 - Engineering Alternatives Analysis For Expansion of Laurel Seasons Wastewater Treatment Plant Watauga County, North Carolina John T. Coxey Consulting Engineering, P. A. John T. Coxey, P. E. 53 Fox Chase Road Asheville, North Carolina 28804 Telephone: 828-645-4046 Fax: 828-658-1304 December, 2008 Project No: 08023 JAN 1 2 2009 DENR - WATER QUALITY POINT SOURCE BRANCH - M % I. General Information Project: Expansion of the existing Laurel Seasons Wastewater Treatment Plant (NC0038041) from 14,500GPD to 20,000 GPD. A. Facility Name: Laurel Seasons Wastewater Treatment Plant c/o Applicant named below AR Plant location is 4092 Highway 105 South Boone, North Carolina Applicant: PSI Properties, Inc. P. Q. Box 2614 Boone, North Carolina 28607 Applicant Telephone: 828-964-2685 Contact: Renae Ward EAA Preparer's on Name: John T. Coxey, P. E. 53 Fox Chase Road, West Asheville, North Carolina 28804 MR Telephone: 828-645-4046 Fax: 828-658-1304 B. Preliminary Investigation of Water Quality 1. Zero Flow Stream Restrictions The U. S. Geological Survey was contacted for low flow characteristics for the Watauga River in the area of consideration. A summary is shown in the Appendix, Exhibit A. 2. Receiving Stream Classification The area of Laurel Fork in the vicinity of the project is classified as C; TR as shown in the Appendix, Exhibit B. 3. Basin wide Water Quality Plan A copy of the information regarding the Laurel Fork in the area of M4 consideration is shown in the Appendix, Exhibit C. There appears to be no limiting factors for further wastewater discharge. PM No dw am % rM OR MR FM an RM 4. Impaired Waters A copy of the current 303(d) and 2008 draft 303(d) lists are shown in the Appendix, Exhibit D. There are no impaired waters on these, lists in the area of the proposed Laurel Seasons Wastewater Treatment Plant expansion. 5. Presence of Endangered Species The U. S. Fish and Wildlife Service was contacted for comment on the project. We received a letter on November 13, 2008 with general comments and a list of endangered and federal species of concern. No specifics were presented in the area of plant expansion or collection system construction. New plant construction will take place on the site of the existing Laurel Seasons plant. This site has been in a constant state of change since the plant was first built. Adjacent to the plant site is an apartment complex. The plant expansion will be constructed in an area of the parking lot for the apartments; therefore no impact to endangered species is expected. -2- PER X= e II. Flow Proiections am The facilities at Laurel Seasons consist primarily of apartments occupied by students at Appalachian State University. Meter readings currently no range from 7,000 to 12,000 gallons per day depending on whether school is in or out of session. Laurel Seasons is currently permitted for 14,500 gallons per day according to the NPDES Permit. When school is in session wastewater flow is approximately 80% of the permitted amount. There are plans by the property owners to add more apartments, possibly install a small laundry and add a commercial facility. An estimate of additional flow is shown below: 6 — 2 Bedroom apartments x 120 gpd/bedroom = 1,440 gpd 6 — washer laundry x 500 gallons/machine = 3,000 gpd 1 — 3000'square commercial facility x 120 gallon/ 1000'square = 360 gpd 4,800 gpd These new flow amounts combined with the existing 12,000 gpd meter readings equate to a total of 16,800 gpd. It is proposed to expand the existing Laurel Seasons plant from 14,500 gpd to 20,000 gpd to allow for existing facilities and new apartment and commercial construction. on I" FM W an M III. Discussion of Waste Treatment Alternatives A. Connection to an Existing Wastewater Treatment Plant WO The only treatment facility (public or private) in the vicinity of the Laurel Seasons plant large enough to accept flow from the project is the Town of AM Boone. The nearest connecting point to the Boone collection system is approximately one (1) mile away. Flow from Laurel Seasons would have to be pumped along the Highway 105 corridor to this location, which is am 320' higher in elevation than the existing Laurel Seasons plant. Two (2) pump stations would be required. �+ There are two (2) reasons why this alternative is not feasible. First, the North Carolina Department of Transportation (NCDOT) will not grant an encroachment permit in their right-of-way of Highway 105 to a private �+ individual or company. Secondly, the Town of Boone has been contacted in the past for acceptance of wastewater flow from private entities. The Town's response has been negative regarding this, as it is not feasible to add additional capacity to their treatment plant, not to construct additional collection systems for private individuals or companies. IM F" F" 0" P" M M -4- M B. Land Application The land contiguous to the Laurel Seasons project provides very poor quality soils for land based wastewater disposal. Both sides of Highway 105 are extremely rocky, steep, and heavily wooded. Existing septic systems are failing and the Watauga County Health Department is essentially denying any new applications for septic tank and drainfield systems. Several property owners are attempting to connect to the Ponds wastewater plant in the Foscoe area because of soil restrictions. �► An investigation into the soil types was made by obtaining soil classification maps from the Watauga Soil and Water Conservation District. A list of the soils contiguous to Laurel Seasons and corresponding maps are shown in the Appendix Exhibit E. Description of their soil characteristics and suitability for land -based FM disposal are shown and their rated values are shown using a scale of 0.01 to 'l .00, with 1.00 representing the greatest limitation. In almost all the ratings, the value shown is 1.00, the most limiting category. The report examines the soil suitability for three land based disposal methods: rapid infiltration, slow rate treatment, and irrigation. There is a brief description of each treatment method prior to the ratings for each. The soil ratings for each method begin on the following pages: Rapid Infiltration - Page 44 Slow Rate Treatment - Page 53 Irrigation — Page 62 The reviewer is requested to review the treatment description as well as the ratings. P" A map of the study area precedes each disposal discussion. The severity of the limiting factors shown above, strongly suggest that land -based disposal would not be feasible. In addition, it is pointed out that a large amount of suitable land would be necessary to dispose of, and provide repair area for approximately 20,000 gpd of wastewater. It is very doubtful that enough contiguous land could ever be found let alone be for sale by the local property owners. -5- M No OR t am C. Wastewater Reuse Reuse of treated wastewater effluent on this project can only be an option when used in conjunction with a biological treatment system approved under an NPDES permit. State requirements regarding reuse stipulate that effluent be tertiary quality. While it is expected that tertiary limits will be required for plant expansion on this project, the project site and areas around the project have very limited locations where reclaimed water could be land applied. There are scattered locations of a few golf courses, ball fields, very few crops, etc. but they are in varied locations in the county and the logistics �+ and transport factors involved in distributing small quantities of reclaimed water appear to preclude this alternative as an option. M FM P" MM rM IM M M P" In P" no IM D. Direct Discharge to Surface Waters 7Q 10 and 30Q2 stream flow data has been obtained from the USGS and are shown elsewhere in this report. It is expected that, at a minimum tertiary limits will be in effect for plant expansion. It is proposed to utilize the existing Laurel Seasons wastewater plant as �+ part of the overall expansion of facilities. The existing plant would be converted to an equalization basin or sludge holding tank, or a combination of both. Additional new construction would be required to �+ provide a treatment plant capable of treating 20,000 gpd. Dual train units for aeration and clarification would be part of the new construction. A tertiary filtration system integral to the aeration/clarification would be included. Disinfection would be accomplished with a UV light system. A permanent stand-by generator with automatic transfer switch would be installed for use in the event of a power outage. A schematic diagram of the proposed facilities is shown following this page along with a map and a project cost estimate for the plant expansion. fm P" Ift MR am �.��•���. 5•.�-¢sates wo ZT, pr . CE'Fi— Cb CII C i MCI ." . . . . . . . . . . . . . . 4 MNtTN N t11112 H0119 L-41 701 030 FEET I WO IOW METERS Map created with TOP010 02003 National Geographic(war�wzmfiormlgeogmphicmrrdfopo) pq OR Project Cost Estimate 20,000 GPD Wastewater Treatment Facilities Laurel Seasons Wastewater Treatment Plant Cost information was provided in part from Purestream, Inc., Florence, Kentucky, and Pro -Water Systems, Inc., Jacksonville, Florida. New Construction 1. Two (2) 10,000 gallon aeration chambers (24 hour retention) 2. Two (2) 1,850 gallon clarifier chambers (4.4 hours retention) 3. Dual aeration blowers, each aeration chamber 4. Return and waste sludge piping 5. Air lines and diffuser piping 6. Influent flow distribution box at aeration 7. Access ladders and floor grating 8. Control panel for electrical operation of equipment 9. Galvanized hand rails 10. Valving for air, skimmer, and sludge lines 11. Tertiary filtration system 12. Start-up personnel Total Items 1 through 12 $ 1752000.00 �••, 13. UV Disinfection system $ 20,000.00 14. Stand-by Generator $ 20,000.00 fin Existing Plant Modifications 1. Flow Equalization Pumps and Piping PM 2. Flow Equalization Blowers, air line, diffusers 3. Sludge Holding Blowers, air lines, diffusers 4. Sludge lines to new plant P+ 5. Bulkhead removal and additions 6. Partial sand blasting and painting 7. Electrical control panel Total Items 1 through 7 $ 35,000.00 $ 2507000.00 PM Contractor Installation 100,000.00 Engineering 30,000.00 Administration 5,000.00 '" Contingencies (10%) 25,000.00 Total Project Cost Estimate $ 410,000.00 am -8- no IV. Conclusions No present worth analysis is presented in this report because it is evident that the only alternative for providing additional waste treatment for this project is to construct a wastewater treatment expansion at the present Laurel Seasons treatment site. Soil maps and soil classifications clearly show the non -suitability of the area's soils for supporting land based wastewater disposals. The majority of the soils received the lowest rating possible for land -based disposal. The Town of Boone sewer system is approximately one (1) mile away and up hill. IM This alternative would require a series of pump stations and an expansion to the existing Boone wastewater plant. FMR W Wq FMq MR M" PM MR IM In M r � john coxey a+ From: John C Weaver gcweaver@usgs.gov] Sent: Monday, October 27, 2008 4:24 PM am To: John coxey Cc: John C Weaver rw Subject: Low -flow characteristics for Laurel Fork [trib?] near Boone Mr. Coxey, Page 1 of 2 GX*14W1T ,4 In response to your inquiry about the low -flow characteristics (7Q10, 30Q2) for a location on Laurel Fork near Boone in Watauga County, the following information is provided: A check of the low flow files here at the USGS North Carolina Water Science Center does not indicate any previous low -flow determinations for the specific lacetion you identified on Laurel Fork. However, the files do show some previous estimates for other locations on Laurel Fork tributary that plot on the same stream identified ow by the lat/long coordinates in your letter dated October 17, 2008: Sta. 03478881920 Laurel Fork tnb at SR 1107 near Poplar Grove (drainage area 1.21 sgmi), estimated 7Q10 = 0.4 cfs (or 0.31 cfs per sgmi), February 1986 Sta. 03478881950 Laurel Fork trib near Boone (drainage area 1.3 sgmi), estimated 7Q10 = 0.4 cfs (or 0.27 cfs per sgmi), March 1976 Sta. 03478881955 Laurel Fork bib at mouth near Boone (drainage area 1.38 sgmi), estirated 7010 = 0.4 cfs (or 0.31 cfs per sgmii), July 1985 Your point of interest is about 0.3 mile downstream from where 0347881950 plots on mapping software. Several pieces of information to consider., P" (1) The "most recent' low -flow information published for this area is in a statewide report completed in the early 1990's. It is USES Water -Supply Paper 2403, 'Low -flow characteristics of streams in North Carolina" (Giese and Mason, 1993). An online version of the report is available through httpl/pubs.er govfusgspubshvspANsp2403. The report provides the low -flow characteristics (based on data through 1988) via regional relations and at -site values for sites with drainage basins between 1 and 400 sgmi and not considered or known to be affected by regulation andfor diversions. If you access the report please note the online report files are provided in the ". DJWU" format and require a particular L¢ardtech plug-in, also avallable through a link displayed on Iffite page. Cr you can click an adjacent link that will allow you to view the report as a group of images without the need for a plug-in. (a) In Table 1 of this report, there are 3 nearby sites on Watauga River for which 7Q10 and 30Q2 discharge estimates are provided. Expressing these estimates as 7Q10 and 30Q2 low -flow yields (flow per square f mle of drainage area, or cfsm) provides some indication of the yield range that could potentially be applicable to your �► 1;�J<,n. The'Q1^ loV •pGw yEeSd range is from about 0.22 to about 0.28 osrn (average 0.24 cfsm). Similarly, the 30Q2 low -flow yield range is from about 0.48 to about 0.68 cfsm (average 0.55 cfsrn). 1W (b) Use of the regional 7Q10 equation provided in this report for this area (Hydrologic Area 10) produces 7Q10 flaw estimates with yields equal to about 0.31 cfsm. Similarly, use of the regional 30Q2 equation (using a glean annual runoff of 2.0 cfsm) produces 3002 flown estimates with yWds equal to about 0.69 can. Am (2) As you consider the active inform. abon, please be aware of the following note. The above data are based on N to r 6 re- r.. r red �. r i n g -e ! r p�,:cd� c:: �•.,•�. _ �..�.a�:,;3 ... �:� 1338 wager year, well in advai Of the drought conditions that have occurred MR 10/28/2008 rAn Pave 2 of 2 WN P since publication of the report In some North Carolina basins, the low -flow conditions observed during the 1998- 2002 and current (2007-08) droughts have resulted in lower tow -flow statistics. No formal statewide investigation has been completed to document the changes in low -flow statistics since the drought. However, where updated analyses have been completed for self stations, the changes in pre -draught versus updated 7010 discharges have shown varying percentage changes of decline. em For example, at a downstream, long-term gaging station on Watauga River near Sugar Grove (station id 03479000, drainage any 92-1 sgrrs), the most recent analysis for [aw-'tow characteristics indicates ft 7Q10 is 19.2 cfs (based on full period of record including the recent drought). This is approximately 7 percent lower than the 7010 based on the avabble period through the 1997 climatic year, just prior to the start of the 1998 2002 OR drought 0*V Note: The climatic year is the standard annual period used fbr low -flaw analyses at continuous -record gaging stations. It runs from April 1 through March 31 and is designated by the year in which the period begins. For example, the 2007 climatic year is from April 1, 2007, through March 31, 2008. Putting together the above pieces of information suggest the 7Q10 yield in the range of about 0.2 to 0.3 cfsm and the 3002 yield is in the range of about 0.5 to 0.7 cism. And in the absence of further data and/or analyses, use of these ranges may be the most appropriate and, in terms of the 7Q10, would be consistent with the yields associated with previous estimates on Laurel Fork. Once you determine the drainage area for your specific point of interest, you can apply the yield ranges to obtain 7010 and 3002 flaw estimates for this locaation. Hope this information is helpful. M" Thank you. Curtis Weaver rA ,►,,rr****ter** J. Curtis Weaver, Hydrologist, PE USGS North Carolina Water Science Center 3916 Sunset Ridge Road Raleigh, NC 27607 Telephone: (919) 571-4043 // Fax: (919) 571-4041 E-mail address — jcwreaver@usgs.gov Internet address — httpl/ncwater usgs.gov/ OR Mh 0" Am M" 10/28/2008