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HomeMy WebLinkAboutWQCSD0246_Regional Historical File WQCSD0479 1994 to 2012F Central Files: APS SWP 09/01 /09 Permit Number WQCSD0479 Permit Tracking Slip Program Category Status Project Type Non -discharge Active New Project Permit Type Version Permit Classification Deemed permitted collection system management and operation 1.00 Individual Primary Reviewer wanda.frazier Coastal SW Rule Permitted Flow Permit Contact Affiliation Facilily Facility Name Major/Minor Region Jackrabbit Mountain Recreation Area WWTP Minor Asheville Location Address US Hwy 64 S Of Hayesville Murphy NC 28906 1071R - County Clay Facility Contact Affiliation Owner Name Owner Type USDA US Forest Service Non -Government Owner Affiliation Monica Schwalbach Acting Forest Supervisor PO Box 2750 Asheville NC 28802 Dates/Events Scheduled Orig Issue App Received Draft Initiated Issuance Public Notice Issue Effective Expiration 08/28/09 08/28/09 08/28/09 08/28/09 Regulated Activities Lodging/campground/rest area Outfall NULL Waterbody Name Stream Index Number Current Class Subbasin 0 L PERMIT NO W00034763 Clay County Water & Sewer District, Jackrabbit Sewer Extension Clay County May 26 2010 ENGINEERING CERTIFICATION — POST CONSTRUCTION System Description: permission is hereby granted to the Clay County Water and Sewer District for the construction and operation of approximately; a 100-gallon per minute pump station with duplex pumps, on -site audible and visual high water alarms, and on -site generator with automatic transfer switch; as well as approximately 12,700 linear feet of 4-inch force main and a 2"d 100-gallon per minute station with duplex pumps, on -site audible and visual high water alarms, and on -site generator with automatic transfer switch; as well as approximately 14,500 linear feet of 4-inch force main to serve Jackrabbit Mountain Recreational Area, replacing the existing package WWTP as part of the Jackrabbit Sewer Extension project, and the discharge of 10,000 gallons per day of collected domestic wastewater into the Clay County Water & Sewer District's existing sewerage system Complete and submit this form to the Asheville regional office with the following: One copy of the project record drawings (plan & profile views of sewer lines) of the wastewater collection system extension supporting design calculations (selected pumps, system curve, operating point, available storage if portable generator(s) or storage greater than longest past three year outage reliability option selected) for any pump stations permitted as part of this project Changes to the project should be clearly identified on the record drawings or in written summary form. Permit modifications are required for any changes resulting in non-compliance with this permit regulations or minimum design criteria. This project shall not be considered complete nor allowed to operate until this Engineer's Certification and all required supporting documentation have been received by the Division. Therefore, it is highly recommended that this certification be sent in a manner that provides proof of receipt by the Division. ENGINEER'S CERTIFICATION ❑ Partial Final as a duly registered Professional Engineer in the State of North Carolina, having been authorized to observe ( periodically, ❑ weekly, ❑ full time) the construction of the above referenced project for the Permittee here y state that, to the best of my abilities, due care and diligence was used in the observation of the construction such that the construction was observed to be built within substantial compliance of this permit; 15A NCAC 2T; the Division of Water Quality's (Division) Gravity Sewer Minimum Design Criteria adopted February 12, 1996 as applicable; the Division'sl�llfhimu'#esignntenafor the Fast Trael Permitting of Pump Stations and Force Mains adopted June 1, 2000 ai*a' ii�able, u{�p � g aterial' . North Carolina Professional Engineer's seal, signature, and date: WITH REQUI k i� 11i JJN 2 d 2012 � EN THIS F`OkM + `1AU0POkfNG I ENTATION ADDRESS _...., ...... ,' R4x EDWARDS SURFACE WATER PROTECTION SUPERVISOR ASHEVILLE REGIONAL OFFICE 2090 US HIGHWAY 70 SWANNANOA, NC 28778 The Permittee is responsible for tracking all partial certifications up until a final certification is received. Any wastewater flow made tributary to the wastewater collection system extension prior to completion of this Engineer's Certification shall be considered a violation of the permit and shall subject the Permittee to appropriate enforcement actions. • Mc G_ - R. A S S O C I A T E S June 25, 2012 Mr. Chuck Cranford Division of Water Quality -Asheville Regional Office North Carolina Department of Environment And Natural Resources 2090 U.S. Highway 70 Swannanoa, North Carolina 28778 Re: Engineering Certification Permit Number WQ0034763 Jackrabbit Campground Sewer Extension Clay County Water & Sewer District Clay County, North Carolina Dear Mr. Cranford: Please find enclosed the required Engineering Certification form, one (1) copy of the supporting design calculations and one (1) set of the project record drawings for the above referenced project. The project has been constructed as outlined in the associated permit with no noteworthy changes. The improvements have been installed, tested and are ready for service activation. If you have any questions regarding the certification package, please feel free to contact me at any time. Sincerely, McGILL ASSOCIATES, P.A. MI DOWD, PE Project MD Jw Enclosures cc: Paul Leek, Manager, Clay County Layton Schuh, Director, Clay County Water & S P:/09.00388/letters/cc25jun 12. doc r...., ... .. �...,:... U JUN 27 2012 1nrn-r.PR .-=UA ITY SEOTIOM . Engineering e Planning 0 Fina,jice McGill Associates, P.A. • P.O. Box 2259, Asheville, NC 28802 • 55 Broad Street, Asheville, NC 28801 Office: 828-252-0575 • Fax: 828-252-2518 JACKRABBIT CAMPGROUND SEWER EXTENSION DESIGN CALCULATIONS CLAY COUNTY WATER AND SEWER DISTRICT CLAY COUNTY, NORTH CAROLINA PREPARED BY: J.C. WILLIAMS, PE REVIEWED BY: MICHAELT. DOWD, PE Ar • c A S S O C I A T E S Engineering • Planning • Finance Post Office Box 2259 Asheville, North Carolina 28802 June 2012 09.00388 \0%1111111/ CA)? / Aw 7 A r Q380pQ ;o•.° 2 ����Ati•c. •WIL�\` 1j11111\ Lo-� ,7 TABLE OF CONTENTS 1.0 OVERVIEW..........................................................................................................1 2.0 DESIGN FLOW....................................................................................................... 2 3.0 FORCE MAIN DESIGN............................................................................................ 3 4.0 WETWELL DESIGN.................................................................................................6 5.0 PUMP SIZING CALCULATION............................................................................... 10 6.0 DOWNSTREAM SEWER EVALUATION .................................................................. 14 APPENDIX A PUMP & SYSTEM CURVES U r tl I_ McGill Associates, P.A. i Clay County c Design Calculations Jackrabbit Campground Sewer Extension .�F _. �,, t. i °; {: r I i The Jackrabbit Campground is located in Clay County, North Carolina and is owned and operated by the United States Forest Service (USFS). The campground previously utilized a 13,000 gallon per day (gpd) wastewater treatment plant (WWTP) with a related NPDES permit to discharge treated wastewater from the campground to Chatuge Lake. This project generally consists of demolishing the existing WWTP and constructing two (2) pump stations in series to convey wastewater flows from the Jackrabbit Campground to the Clay County Water and Sewer District's (CCWSD) existing wastewater collection system. The project included construction of two (2) new sewer pump stations complete with backup electrical generators, valve vaults, odor control systems, and appurtenant equipment. The project also included the construction of approximately 27,500 linear feet of 4-inch sewer force main and related appurtenances. Approximately 360 linear feet of the proposed 4-inch force main has been attached to an existing NCDOT bridge. Additionally, this project included upgrading the existing Ridges Pump Station, which the proposed project discharges to, with an odor control system. McGill Associates, P.A. 1 Clay County Design Calculations Jackrabbit Campground Sewer Extension �ws, 2.0 DESIGN FLOW �w The Jackrabbit Campground wastewater collection system consists of two (2) wastewater pump stations and a gravity sewer collection system which route flows to the new Jackrabbit Campground pump station located at the former site of the now demolished WWTP. The design 'E flow for the new Jackrabbit pump station was calculated based on historic wastewater flow data from the Jackrabbit Campground WWTP; the campground had an average daily flow of 3,700 gpd LA with a maximum daily flow of approximately 10,OOO gpd during peak vacation periods. The Jackrabbit pump station has been sized to accommodate the combined peak instantaneous flow from the two (2) existing pump stations as well as the tributary gravity sewer system which accommodates a bath house and Recreational Vehicle wastewater dump station. It should be noted that the USFS does not plan to expand the campground or otherwise significantly increase wastewater flows. The new Scrougetown pump station has been sized to accommodate flows from the new Jackrabbit Campground pump station. The proposed pump station capacities are summarized in Table 2-1 below. Table 2-1: Pump Station Design Flows Firm Pumping Capacity F Purnp Station t t . (gpml Jackrabbit Campground 100 Scrougetown 100 McGill Associates, P.A. 2 Clay County Design Calculations Jackrabbit Campground Sewer Extension l 3.1 Force Main Sizing 4-inch sewer force main has been installed for each of the new pump stations. Given the pump 77 station capacities of 100 gpm (0.22 ft3/s) each, verify that a minimum velocity of 2 ft/s is maintained. Where: V = Q A V = o.aa ifs = 2.5 itt > 2.0 f t OKAY 7r•(0.167 ft)z s s 3.2 Force Main Material Selection The majority of the installed force mains utilized PVC (5DR 13.5) as the selected force main material. It should be noted that 4-inch ductile iron pipe (CL350) has been used for the bridge attachment, within the pump stations' structures and along portions of the force main alignment where the force main is located under North Carolina Highway 175. It should be further noted that 4-inch HDPE (DR13.5) has been used for portions of force main installed by horizontal directional drilling methods. 3.3 Hydraulic Profile Air Release Valves have been installed at high points and intermediate high points along each respective force main to prevent accumulation of air pockets within the systems. Additionally, flushing connections have been installed with isolation valves near intermediate low points and at other strategic locations to allow the Operator to isolate sections of force main and improve accessibility for systematic force main cleaning. McGill Associates, P.A. 3 Clay County Design Calculations Jackrabbit Campground Sewer Extension L 3.4 Water Hammer Evaluation Check the maximum water hammer pressure in each force main to ensure adequacy of pipe material and critical period with respect to the force main highpoint. Eauations Used: where: T = critical period (s) L = length of force main between point of flow change and point of reflection a = velocity (celerity) of pressure wave, (ft/s) = 4720 a 1+C(Kd /Ee) where: a = velocity (celerity) of pressure wave (ft/s) C = 1, for pipe with expansion joints throughout = 1- µz, for pipes anchored against axial movement (buried force mains) = 5/4 - µ, for pipes without expansion joints and anchored at the upstream end µ = Poisson's ratio K = bulk modulus of water (assumed 300,000 psi) d = diameter of pipe (in) E = bulk modulus of pipe material (psi) e = thickness of pipe wall (in) aV h,,,(.) g where: h = maximum head caused by waterhammer (ft) a = velocity of pressure wave (ft/s) V = velocity of fluid in pipeline (ft/s) g = accleration due to gravity (assumed 32.2 ft/sz) Typical Pipe Characteristics Material f Cast Iron 7.7M -15M 0.30 Ductile Iron 24,000,000 0.30 PVC 406,000 0.40 HDPE 130,000 0.38 McGill Associates, P.A. 4 Clay County Design Calculations Jackrabbit Campground Sewer Extension i _. _ _ __., �, .;,;,, �_, P W_ Jackrabbit Campground Pump Station Force Main Design Force Main Material PVC SDR 13.5 Pipe Pressure Class 315 psi Force Main Length to High Point 9,700 ft. Poisson's Ratio (u) 0.40 Pipe Inside Diameter (d) 3.84 in. Pipe Wall Thickness (e) 0.33 in. Bulk Modulus of Elasticity of Water (K) 300,000 psi F` Bulk Modulus of Elasticity of Pipe Material (E) 406,000 Velocity of the Water Pressure Wave (a) 1,646 ft/sec Water Flow Rate (Qpumptot) 100 gpm Water Velocity (V) 2.77 ft/sec Gravity (g) 32.2 ft/secZ Critical Time Period (T) 11.79 s Maximum Head by Water Hammer (Hwh) 141.62 ft Maximum Pressure by Water Hammer (Pwh) 61.3 psi Is total pressure rating of pipe greater than maximum waterhammer pressure? YES Scroueetown Pump Station Force Main Design Force Main Material PVC SDR 13.5 Pipe Pressure Class 315 psi Force Main Length to High Point 4,130 ft. Poisson's Ratio (u) 0.40 Pipe Inside Diameter (d) 3.84 in. Pipe Wall Thickness (e) 0.33 in. Bulk Modulus of Elasticity of Water (K) 300,000 psi Bulk Modulus of Elasticity of Pipe Material (E) 406,000 Velocity of the Water Pressure Wave (a) 1,653 ft/sec Water Flow Rate (Qpumptot) 100 gpm Water Velocity (V) 2.77 ft/sec Gravity (g) 32.2 ft/secZ Critical Time Period (T) 5.0 s Maximum Head by Water Hammer (Hwh) 142.18 ft Maximum Pressure by Water Hammer (Pwh) 1 61.5 psi Is total pressure rating of pipe greater than maximum waterhammer pressure? YES r McGill Associates, P.A. 5 Clay County Design Calculations Jackrabbit Campground Sewer Extension y 4.0 WETWELL DESIGN 4.1 Wetwell Sizing (Jackrabbit Campground PS & Scrougetown PSI «a Determine the wetwell sizing. Note that both constructed wetwells have been sized to operate fF under similar influent flow conditions. �r Pump Station Parameters: Qmin: 2.5 GPM Design ADF Qmax: 6.9 GPM Maximum ADF Qpump: 100 GPM Pump Capacity Wet Well Diameter: 8 feet f-t Design ADF Scenario U- Using the formula: Cycle Time = (Pump Run Time + Refill Time at Average Inflow) Volume Operating 3 Operating, Pump Run Total Cycle Well Dia. UolumeJft. Depth Depth Tirne fe#il�Time „- Time Cycles per f (ft.) (ft3� ''min8 50.27 0.083 31.21 0.32 12.48 12.80 4.69 8 50.27 0.166 62.42 0.64 24.97 25.61 2.34 8 50.27 0.249 93.63 0.96 37.45 38.41 1.56 8 50.27 0.332 124.84 1.28 49.94 51.22 1.17 8 50.27 0.415 156.05 1.60 62.42 64.02 0.94 8 50.27 0.498 187.27 1.92 74.91 76.83 0.78 8 50.27 0.581 218.48 2.24 87.39 89.63 0.67 *Cycles per Hour must be > 2/Hr. Maximum ADF Scenario Using the formula Cycle Time = (Pump Run Time + Refill Time at Average Inflow) volume@ Operating :`O`peratng Pump,Run Total Cycle WeII.Dia. volumeft� Depth. Depth Tim Refill TirrieTime . Cycles per (ft) _ (ft) ' (ft) (gal .) , ':. (mm.j (miri.j' .. (min.) Hour* 8 50.27 0.083 31.21 0.34 4.52 4.86 12.35 8 50.27 0.166 62.42 0.67 9.05 9.72 6.17 8 50.27 0.249 93.63 1.01 13.57 14.58 4.12 8 50.27 0.332 124.84 1.34 18.09 19.43 3.09 8 50.27 0.415 156.05 1.68 22.62 24.29 2.47 8 50.27 0.498 187.27 2.01 27.14 29.15 2.06 8 50.27 0.581 218.48 2.35 31.66 34.01 1.76 *Cycle Time must be > 2/Hr. McGill Associates, P.A. 6 Clay County I Design Calculations Jackrabbit Campground Sewer Extension 8-foot diameter wetwells have been installed at each pump station. Due to the distance from CCWSD's operations center to the new pump stations, 8-foot diameter wetwells were selected to provide additional storage capacity and allow CCWSD adequate travel time to each respective pump station site to assess pump station alarm sources and implement the appropriate corrective actions. 4.2 Wetwell Bouyancy (Jackrabbit Campground Pump Station) Assumes Wetwell is empty and ground water table elevation is equal to proposed ground elevation. Equipment and piping weight and restraint forces not included in calculations. Wetwell top slab weight not included in calculations. Wet Well Parameter Data Wet Well Diameter (ft.): 8 Wall Thickness (in.): 8 Bottom Slab Thickness (in.): 8 Bottom Slab Extends (in.): 8 Depth (ft.): 11.17 Wet Well Outer Dia. (ft) = Wet Well Diameter (8.00 ft) + (2 x Wall Thickness (8 in/12)) = 9.33 Bottom Slab Diameter (ft.) = Wet Well Outer Dia. (9.33 ft) + (2 x B.S. Extension (8 in/12)) = 10.67 Material Properties Density of Concrete (lb/cf): 150 ` Density of Sat. Soil (lb/cf): 120 Density of Water (lb/cf): 62.4 Volumes: Pump Station Displaced Volume Wet Well (cf) = Wet Well Outer Diameter (9.33 ft)^2 * pi / 4 * Depth (11.17ft) = 764.2 Bottom Slab (cf) = B.S. Diameter (10.67 ft)^2 * pi / 4 * B.S. Thickness (8in/12) = 59.5 Total Displaced Volume (cf) = 823.7 Volume of Soil Over Extended Concrete Slab: Soil (cf) _ ((B.S. Dia.(10.67 ft)^2 * pi/4) - Wet Well Outer Dia. (9.33 ft)^2 pi/4)] * Depth (11.17 ft) 233.9 McGill Associates, P.A. 7 Clay County Desi n Calculations Jackrabbit Campground pground Sewer Extension r Downward Forces: Note: Downward force assumes pump station empty of all pumps, piping, and appurtenances Weight of Pump Station: Bottom Slab (lbs.) = Bottom Slab Volume (59.5 cf) *Density of Conc.(150 lb/cf) = 8,925.0 [Wet Well Outer Dia. (9.3A2 * pi/4) - Wet Well Dia. (8.0^2 * pi/4)] Walls (lbs.) _ * Depth (11.17 ft) * Density of Conc.(150 lb/cf) = 30,412.7 Weight of Soil Above Concrete Slab Extension: Soil (lbs.) = soil volume (233.9 cf) * (soil density (120ibs/cf)) = 28,068.0 Downward Force (Ibs.) = Bottom Slab (8925.0 lbs.) + Walls (30412.7 lbs. + Soil (28068.0 lbs.) = 67,405.7 Upward Force: Displaced Volume Buoyancy Force: Buoyancy Force (lbs.) = Displaced Volume (823.7 cf) * density of water (62.4lbs/cf) = 51,398.9 Buoyancy Force of Saturated Soil Volume: Buoyancy Force (lbs.) = Saturated Soil Volume (233.9 cf) * density of water (62.4lbs/cf) = 14,595.4 Force Upward lbs. Displaced Volume Buoyancy Force (51398.9 lbs) +Saturated Soil p (lbs.) Buoyancy Force (14595.4 lbs) 65,994.2 Safety Factor = (Downward Force (67405.7lbs) / Upward Force (65994.2lbs) _ If greater than 1, then not Buoyant 4.3 Wetwell Bouvancy (Scrougetown Pump Station) Assumes Wetwell is empty and ground water table elevation is equal to proposed ground elevation. Equipment and piping weight and restraint forces not included in calculations. Wetwell top slab weight not included in calculations. Wet Well Parameter Data Wet Well Diameter (ft.): 8 Wall Thickness (in.): 8 Bottom Slab Thickness (in.): 8 Bottom Slab Extends (in.): 8 Depth (ft.): 13.17 Wet Well Outer Dia. (ft) = Wet Well Diameter (8.00 ft) + (2 x Wall Thickness (8 in/12)) = 9.33 Bottom Slab Diameter (ft.) = Wet Well Outer Dia. (9.33 ft) + (2 x B.S. Extension (8 in/12)) = 10.67 McGill Associates, P.A. 8 Clay County Design Calculations Jackrabbit Campground Sewer Extension 4 iI LL Material Properties Density of Concrete (lb/cf): 150 Density of Sat. Soil (lb/cf): 120 Density of Water (lb/cf): 62.4 Volumes: Pump Station Displaced Volume Wet Well (cf) = Wet Well Outer Diameter (9.33 ft)A2 * pi / 4 *Depth (13.17ft) = 901.0 Bottom Slab (cf) = B.S. Diameter (10.67 ft)^2 * pi / 4 *B.S. Thickness (8in/12) = 59.5 Total Displaced Volume (cf) - 960.5 4 Volume of Soil Over Extended Concrete Slab: Soil (cf) = [(B.S. Dia.(10.67 ft)^2 * pi/4) - Wet Well Outer Dia. (9.33 ft)^2 * _ 275.8 pi/4)] * Depth (13.17 ft) Downward Forces: Note: Downward force assumes pump station empty of all pumps, piping, and appurtenances r II L Weight of Pump Station: Bottom Slab (lbs.) = Bottom Slab Volume (59.5 cf) * Density of Conc.(150 lb/cf) = 8,925.0 !f [Wet Well Outer Dia. (9.3A2 * pi/4) - Wet Well Dia. (8.0^2 * pi/4)] Walls (lbs.) = * Depth (13.17 ft) * Density of Conc.(150 lb/cf) = 35,858.1 Weight of Soil Above Concrete Slab Extension: Soil (lbs.) = soil volume (275.8 cf) * (soil density (120lbs/cf)) = 33,096.0 Downward Force (lbs.) = Bottom Slab (8925.0 lbs.) + Walls (35858.1 lbs. + Soil (33096.0 lbs.) = 77,879.1 Upward Force: Displaced Volume Buoyancy Force: Buoyancy Force (lbs.) = Displaced Volume (960.5 cf) * density of water (62.4lbs/cf) = 59,935.2 Buoyancy Force of Saturated Soil Volume: Buoyancy Force (lbs.) = Saturated Soil Volume (275.8 cf) * density of water (62.4lbs/cf) = 17,209.9 - Upward Force (lbs.) = Displaced Volume Buoyancy Force (59935.2 lbs) + Saturated Soil = 77,145.1 Buoyancy Force (17209.9 lbs) Safety Factor = (Downward Force (77879.11bs) / Upward Force (77145.1lbs) _ If greater than 1, then not Buoyant uA McGill Associates, P.A. 9 Clay County Design Calculations Jackrabbit Campground Sewer Extension ",9 5.0 PUMP SIZING CALCULATION 5.1 Jackrabbit Campground Pump Station L, Force Main Length (ft) 12,825 High Point Elev. (ft) 1972.0 D, Force Main Diameter (in) 3.84 Pump Off Elev. (ft) 1925.5 C, Friction Coefficient 118 Q, Pump Capacity (gpm) 100 Minimum ADF(gpm) 1.8 PF, Peaking Factor 14.5 Design ADF, Average Daily Flow (gpm) 6.9 Note: Hazen Williams Friction Coefficient Maximum per NC Design Criteria, DIP (Initial Service 125, End of Service 100), PVC (Initial Service 140, End of Service 120), HDPE (Initial Service 140, End of Service 120). Since this Force Main utilized multiple pipe materials, a weighted average friction coefficient has been used. TDH = Head static + Head friction + Head minor The friction loss in the force main can be represented as: Head friction = 10.7 Q1.85 L / (C1.85 D4.s7) 10.7 * Q (100.00gpm)^1.85 * L (12825 ft) / ( C (118)^1.85 * D Total Friction Headloss (ft) (3.84 inches)^4.87) �i�I� (��9iw Static Head ft High Point Elev. 1972 ft - Pump Off Elev. 1925.5 ft ( ) g ( ) p ( ) The minor losses due to valves and fittings can be represented as: Head L = K V2/2g The following valves and fittings, and associated K values, are included in the flow path of the piping system with one pump running: Minor Losses Quantity Kvalue K *Quantity, 90 degree bends 2 0.8 1.6 45 degree bends 16 0.4 6.4 Plug valves 7 0.2 1.4 Check Valves 1 2.5 2.5 Tee (flow through run) 3 0.6 1.8 Exit 1 1 1 Tota41C „ , f 14.7 Velocity through Force Main Q (100.Ogpm) / Area of 3.84 inch Force Main &�(fps) s ,�i:7 SO, Minor Headloss: Fittings & Valves (ft) Total K (14.7) * V (2.77)^2 / 2 g 1.8 McGill Associates, P.A. 10 Clay County Design Calculations Jackrabbit Campground Sewer Extension 1 =7=7=77',- 1-4, Reducer Head Loss Where: K = [1-(d1/d2)z]z H L = K x VZ/2g 4 2 1 10.21 Minor Headloss: Reducers (ft) 0.563 1 0.91 0.91 Total Minor Headloss = Valves & Fittings (1.8) + Reducers (.91) µ;es, Due to the high head pumping conditions and inherent variability of campground wastewater, the f19 Jackrabbit Campground pump station has been fitted with submersible grinder pumps. The installed pump curve, complete with operating curves may be found in Appendix A of this report. r l McGill Associates, P.A. 11 Design Calculations Clay County Jackrabbit Campground Sewer Extension 5.2 Scrougetown Pump Station L, Force Main Length (ft) 14,760 High Point Elev. (ft) 2039.0 D, Force Main Diameter (in) 4.0 Pump Off Elev. (ft) 1923.0 C, Friction Coefficient 139 Pump On Elev. (ft) 1923.5 Minimum ADF(gpm) 1.8 PF, Peaking Factor 14.5 Design ADF, Average Daily Flow (gpm) 6.9 Q, Pump Capacity (gpm) 100 Note: Hazen Williams Friction Coefficient Maximum per NC Design Criteria, DIP (Initial Service 125, End of Service 100), PVC (Initial Service 140, End of Service 120), HDPE (Initial Service 140, End of Service 120). Since this Force Main utilized multiple pipe materials, a weighted average friction coefficient has been used. TDH = Head static + Head friction + Head minor The friction loss in the force main can be represented as: Head friction = 10.7 Q1.85 L / (C1.85 D4.s7) 10.7 * Q (100.00gpm)^1.85 * L (14760 ft) / ( C (139)^1.85 * D (4 Total Friction Headloss (ft) inches)^4.87) Static Head (ft) High Point Elev. (2039 ft) - Pump Off Elev. (1923 ft) m 116 The minor losses due to valves and fittings can be represented as: Head L = K V2/2g The following valves and fittings, and associated K values, are included in the flow path of the piping system with one pump running: Minor Losses Quaniity;Kualue K*Quantity 90 degree bends 2 0.8 1.6 45 degree bends 19 0.4 7.6 Gate valves 0 0.2 0 Plug valves 9 0.2 1.8 Check Valves 1 2.5 2.5 Tee (flow through run) 3 0.6 1.8 Tee (flow through branch) 0 1.8 0 Exit 1 1 Total K 1 16.3 Velocity through Force Main (fps) Q (100.Ogpm) / Area of 4 inch Force Main i�ii ���, O Minor Headloss: Fittings & Valves (ft) Total K (16.3) * V (2.55)^2 / 2 g 1.7 McGill Associates, P.A. 12 Clay County `, Design Calculations Jackrabbit Campground Sewer Extension Reducer Head Loss Where: K = [1-(d1/d2)z]z H L = K x VZ/2g Total Minor Headloss = Valves & Fittings (1.7) + Reducers (.91) '% Due to the high head pumping conditions and inherent variability of campground wastewater, the Scrougetown pump station has been fitted with submersible grinder pumps. The installed pump curve, complete with operating curves may be found in Appendix A of this report. 1 McGill Associates, P.A. 13 Clay County Design Calculations Jackrabbit Campground Sewer Extension _.� m e�.� � ,�.� � ���_.. �ti G,. --.. �.. � �.�„ . ��� __ _u. � � . �... � :�,.�,<��u.�n�. 6.0 DOWNSTREAM SEWER EVALUATION The Scrougetown Pump Station discharges into CCWSD's existing Ridges Pump Station wetwell which has a 425 gpm capacity. The Ridges Pump Station was designed to serve a large luxury development which has only been partially developed due to the economic downturn. The Ridges Pump Station has adequate storage and pumping capacity to accommodate the tributary Scrougetown Pump Station as well as a significant portion of the undeveloped luxury development. L rml McGill Associates, P.A. 14 Clay County Design Calculations Jackrabbit Campground Sewer Extension 1 APPENDIX A PUMP & SYSTEM CURVE 0 0 Pump performance curves curve number P I R P E2 60 HZ Reference curve PIR PE2 - Discharge Frequency Jackrabbit PS Design Conditions 100 GPM @ 195 feet TDH DN32 60 Hz m. Density Viscosity Testnorm Rated speed Date 62.43 Ib/ft3 0.0000169 ft2/s Hydraulic Institute 3515 rpm 2010-11-24 Flow Head Rated power Hydraulic efficiency NPSH 106 US ci.r m. 212 ft 16 hp 38.6 % �i■■■■■■■■■■■ram■■■■■ ■■■■■■■■■■■■■■■■■■ Impeller size N° of vanes Impeller Solid size Revision 7.91 inch 5 Macerator ABS reserves the right to change any data and dimensions without prior notice and can not be held responsible for the use of ABSEL PR information contained in this software. i 2010-09-14 1.7.2 / 2007-02-07 ��� . _ __,u _ � . � � � . Pump performance curves Curve number PI R P E2 60 HZ Reference curve PIR PE2 Discharge Frequency Scroungetown PS, Design Conditions 100 GPM @ 215 feet TDH DN32 60 Hz Density 62.43 Ib/ft3 Viscosity 0. 0000 169 ft2/s Testnorm Hydraulic Institute Rated speed 3515 rpm Date 2010-11-24 Flow Head Rated power Hydraulic efficiency NPSH 99.9 US.g.p.m. 215 ft 15.8 hp 39.9 % H [ft 1 290 280 AF OOF 270 2.F 26 OF 25 240 230 220 ° 21 9 200 44 190 180 170 160 150 14 . 120 11 100 90 80 7 60 50 40 30 2 10 P2 [hp 20 18 16 14 12 1 ft[5 40 35 30 25 20 1 10 5 0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 Q [US g.p.m.] Impeller size TN'of vanes Impeller Solid size Revision 2010-09-14 7.91 inch Macerator Atss reserves the ngnt to cnange any aata ana aimensions wanout prior nonce ana can not oe neia responsiuie to[ uIV ube oI information contained in this software. MDOCLITV I.—ILV I--vI Cantwell, Janet From: Sent: To: Cc: Subject: Attachments: Good afternoon to All, Charlie Gay <charliegay@fs.fed.us> Monday, October 20, 2008 4:27 PM Janet.Cantwell; Terry Dickey; Steve Lohr David Velez; Cliff Northrop; Lynn L Hicks SORP for Jackrabbit JackrabbitSSO.doc Last week Terry asked Engineering for a Sewer Overflow Response Plan (SORP) for Jackrabbit Treatment Plant. The need came up after inspection was performed by Ms. Cantwell of the NC Dept. of Environment and Natural Resources. After talking with Ms. Cantwell last week, I got some ideas of what she was looking for. By the way, thank -you Janet for your help. None the less, I finally put together a plan that is hopefully what the state is looking for. Additionally, I wanted a pretty comprehensive plan so that it can be adapted easily to the other locations throughout the state where we have treatment facilities. (See attached file: JackrabbitSSO.doc) Thanks, Charlie Gay Eng. Tech., NFsNC 160-A Zillicoa Street Asheville, NC 28801-1082 828-257-4231 (office) 828-273-2674 (cell) charliegay@fs.fed.us 1 SEWER OVERFLOW REONSE PLAN (SORP) National Forests in North Carolina Nantahala N.F. Tusquitee Ranger District Jackrabbit Mtn. Rec. Area WWTP Sewer Overflow Response Plan (SORP) Prepared By: Charles Gay / Eng. Tech. 1 a David Velez / Facility Engineer n160-A Zillicoa Street Asheville, NC 28801-1082 Voice: (828) 257-4231 Fax: (828) 257-4884 SEWER OVERFLOW RESPONSE PLAN (SORP) Approved On: October 16, 2008 Amended On: Sewer System Owner: USDA Forest Service 160-A Zillicoa Street Asheville, NC 28801-1082 Contact Persons: Tusquitee District Ranger Steve Lohr (828) 837-5116 Forestry Technician / Recreation Terry Dickey (828) 837-5120 U.S. Forest Service / Supervisors' Office Charles Gay (828) 257-4231 Regulatory Agency To Report Sewer Overflow: NC Dept. of Environment and Natural Resources Division of Water Quality' Asheville Regional Office 2090 US Hwy 70 Swannanoa, NC 28778 Contact Person: Janet A. Cantwell Phone: (828) 296-4500 e-mail: janet.cantwellgncmail.net Report spills Monday -Friday 8 am-5 pm to the appropriate NC DENR-DWO Regional Office. To report spills after hours or on weekends in North Carolina, call 800-858-0368. SORP Prepared By: Charles Gay / Wastewater Coordinator 160-A Zillicoa Street Asheville, NC 28801-1082 (828) 257-4231 SEWER OVERFLOW RESPONSE PLAN (SORP) TABLE OF CONTENTS SECTION PAGE NO. I. Authority........................................................................................................................... I II. General.............................................................................................................................1 A. Objectives B. Organizational Elements of SORP III. Overflow Response Procedure.......................................................................................2 A. Receipt of Information Regarding an SSO B. Dispatch of Sewer Maintenance Personnel to Site of Sewer Overflow C. Overflow Correction, Containment, and Clean Up D. Overflow Report E. Customer Satisfaction IV. Public Advisory Procedure............................................................................................10 A. Temporary Signage B. Other Public Notification V. Regulatory Agency Notification Plan.............................................................................10 A. Immediate Notification B. Secondary Notification VI. Maintenance of SORP...................................................................................................11 VII. Appendices...................................................................................................................12 SEWER OVERFLOW RESPONSE PLAN (SORP) L AUTHORITY This Sewer Overflow Response Plan (SORP) is prepared pursuant to NPDES # NC0021148, to facilitate proper incident reporting procedures outlined in State of North Carolina Department of Environment and Natural Resources, Division of Environmental Health, Wastewater Section, Operating in Accordance with a NCDES Permit, specifically section: Incident Reporting. II. GENERAL The Sewer Overflow Response Plan (SORP) is designed to ensure that every report of a sewage overflow incident is immediately dispatched to the appropriate U.S. Forest Service District personnel for confirmation. Quick response will minimize the effects of the overflow with respect to impacts on public health, beneficial uses and water quality of surface waters and on customer service. The SORP further includes provisions to ensure safety pursuant to the directions provided by the North Carolina Department of Environmental Resources (NCDENR) and that notification and reporting is made to the NCDES when applicable. For purposes of this SORP, "confirmed sewage spill" is also sometimes referred to as "sewer overflow," "overflow," or "SSO." The effective date of this plan is October 16, 2008. A. Objectives The primary objective of the SORP is to protect public health and the environment, satisfy regulatory agencies and waste discharge permit conditions which address procedures for managing sewer overflows, and minimize risk of enforcement actions against the U.S. Forest Service, sewer system owner. Additional objectives of the SORP are as follows: • Protect collection system personnel and wastewater treatment plant; • Protect the collection system, wastewater treatment facilities, and all appurtenances; and • Protect private and public property beyond the collection and treatment facilities. B. Organization of Plan The key elements of the SORP are addressed individually as follows: Section III - Overflow Response Procedure Section IV - Public Advisory Procedure Section V - Regulatory Agency Notification Procedure Section VI — Maintenance of SORP Section VII - Appendices 1 SEWER OVERFLOW REONSE PLAN (SORP) III. OVERFLOW RESPONSE PROCEDURE The Overflow Response Procedure presents a strategy for the Jackrabbit Wastewater Treatment Plant. It is the responsibility of the Tusquitte District Ranger to mobilize labor, materials, tools and equipment to correct or repair any condition, which may cause or contribute to an unpermitted discharge. The plan considers a wide range of potential system failures that could create an overflow to surface waters, land or buildings. A. Receipt of Information Regarding an SSO An overflow may be detected by U.S. Forest Service employees or by others. The U.S. Forest Service is responsible to act based on received phone calls or reports on possible sewage overflow from the wastewater disposal system, and to provide immediate response to investigate and/or correct reported sewer overflow. Generally, telephone calls from the public reporting possible sewer overflows are received at the District Office identified in Appendix D. 1. The telephone operator obtains all relevant information available regarding the overflow including: a. Time and date call was received; b. Specific location; c. Description of problem; d. Time possible overflow was noticed by the caller; e. Caller's name and phone number; f. Observations of the caller; and g. Other relevant information that will enable the U.S. Forest Service Tusquitee District personnel, to quickly locate, assess and stop the overflow. The telephone operator records initial information in the Sewage Overflow Report (Ref. Appendix A) and notifies responsible U.S. Forest Service District personnel and Engineering Department in Supervisors' Office. 2. The Tusquitee District Ranger dispatches U.S. Forest Service personnel to confirm the overflow. Until verified, the report of a possible spill will not be referred to as a "sewer overflow." "Spill is defined as: a. The spill (any amount) has reached surface waters, "Waters of the State or b. The spill exceeds one thousand gallons, (1,000 gals.) Every small spill must be logged on site including time, date, approximate volume, name of respondent. Spills that are fully contained and removed quickly and are less than one thousand gallons are not required to be reported to DWQ. However, a full spill report form will be filled out and kept on file. 2 SEWER OVERFLOW RESPONSE PLAN (SORP) The U.S. Forest Service District personnel complete the Sewage Overflow Report (Ref. Appendix A) within 24 hours of the sewer overflow confirmation and provide the information orally to the NCDENR. If the overflow will affect bathing areas during the bathing season, or public drinking water intakes, the U.S. Forest Service shall notify the NCDENR contact person orally, within two hours of becoming aware of the discharge. If the overflow results in a fish kill, notify the NCDENR contact person within two hours of becoming aware of the discharge. The U.S. Forest Service Supervisors' Office / Engineering Department is responsible for reviewing, updating and signing the final Sewage Overflow Report. Sewage overflow response tracking protocol is summarized in Appendix C. B. Dispatch of Sewer Maintenance Personnel to Site of Sewer Overflow Failure of any element within the wastewater disposal system that threatens to cause or causes a SSO must trigger an immediate response to isolate and correct the problem. Personnel and equipment must be available to respond to any SSO locations. Additional maintenance personnel shall be "on call" in the event extra manpower is needed. Summary of Sewer Overflow Action Plan is included in Appendix C. 1. Dispatching Maintenance Personnel • When the U.S. Forest Service / Tusquittee Ranger District receives notification of a potential sewer overflow outlined in Section A, the U.S. Forest Service / Tusquittee District Ranger dispatches U.S. Forest Service personnel with appropriate resources as required. 2. Maintenance Personnel Instructions • Dispatch maintenance personnel by telephone or radio. Assign and appropriate personnel, materials, supplies and equipment needed. The telephone operator must verify that the entire message has been received and acknowledged by the maintenance personnel who were dispatched. All personnel being dispatched to the site of an SSO proceed immediately to the site of the overflow. Report any delays or conflicts in assignments immediately for resolution. • In all cases response maintenance personnel report their findings, including possible damage to private and public property, to the U.S. Forest Service / Tusquitee District Ranger immediately upon making their investigation. 3 SEWER OVERFLOW RE ONSE PLAN (SORP) 3. Additional Resources The U.S. Forest Service Tusquitee District Ranger receives and conveys to appropriate parties requests for additional personnel, material, supplies, and equipment for maintenance personnel working at the site of a sewer overflow. 4. Preliminary Assessment of Damage to Private and Public Property The U.S. Forest Service District personnel shall use discretion in their actions as reasonably as they can. They must be aware that the U.S. Forest Service could face increased liability for any further damages inflicted to private property during such assistance. The U.S. Forest Service District personnel shall not enter private property for purposes of assessing damage unless authorized by the U.S. Forest Service Tusquitee District Ranger. The U.S. Forest Service District personnel shall take appropriate still photographs and/or video footage; if possible, of the sewer overflow impacted area in order to thoroughly document the nature and extent of impacts. Retain photographs for filing with the Overflow Report. 5. Field Supervision and Inspection • The U.S. Forest Service District Ranger visits the site of the sewer overflow to ensure that provisions of this Overflow Response Plan and other directives are met. • 'The U.S. Forest Service District Ranger is responsible for verbally notifying NCDENR within the specified time and submitting the Overflow Report to NCDENR. 6. Coordination with Hazardous Material Response Upon arrival at the scene of a sewer overflow, should a suspicious substance (e.g., oil sheen, foamy residue) be found on the ground surface, or should a suspicious odor (e.g., gasoline) not common to the sewer system be detected, the U.S. Forest Service crew shall immediately contact the NFsNC / Engineering Department for guidance, before taking further action. • Should the U.S. Forest Service Tusquitee District Ranger determine the need to alert the hazardous material response team, the maintenance personnel awaits the contracted hazardous waste team response. • Contact the NC Hazardous Waste Division at 1-919-508-8400. • Upon arrival of the hazardous material response team, the U.S. Forest Service personnel take direction from the person with the lead authority of that team. Only when that authority determines it is safe and appropriate for the U.S. Forest 11 SEWER OVERFLOW RESPONSE PLAN (SORP) Service personnel to proceed under the SORP with the containment, clean-up activities and correction. . C. Overflow Correction, Containment, and Clean -Up This section describes specific actions to be performed by the U.S. Forest Service personnel during a SSO. The objectives of these actions are: • To protect public health, environment and property from sewage overflows and restore surrounding area back to normal as soon as possible; • To establish perimeters and control zones with appropriate traffic cones and barricades, vehicles or use of natural topography (e.g., hills, berms); • To promptly notify the regulatory agency with preliminary overflow information and potential impacts; • To contain the sewer overflow to the maximum extent possible including preventing the discharge of sewage into surface waters; and • To minimize the U.S. Forest Services' exposure to any regulatory agency penalties and fines. Under most circumstances, the U.S. Forest Service can handle all response actions with its own maintenance forces. They have the skills and experience to respond rapidly and in the most appropriate manner. An important issue with respect to an emergency response is to ensure that the temporary actions necessary to divert flows and repair the problem do not produce a problem elsewhere in the system. Circumstances may arise when the U.S. Forest Service could benefit from the support of private -sector construction assistance. This may be true in the case of large diameter pipes buried to depths requiring sheet piling and dewatering should excavation be required. The U.S. Forest Service may also choose to use private contractors for open excavation operations that might exceed one day to complete. 1. Responsibilities of U.S. Forest Service Personnel upon Arrival It is the responsibility of the first personnel who arrive at the site of a sewer overflow to protect the health and safety of the public by mitigating the impact of the overflow to the maximum extent possible. Should the overflow not be the responsibility of The U.S. Forest Service but there is imminent danger to public health, public or private property, or to the quality of waters of the state, then the U.S. Forest Service District 5 OVERFLOW RESPONSE PLAN SORP SEWER OV ( ) Ranger takes prudent emergency action until the responsible party assumes responsibility and provides actions. Upon arrival at a SSO, the U.S. Forest Service personnel perform the following: • Determines the cause of the overflow, e.g. sewer line blockage, pump station mechanical or electrical failure, sewer line break, etc.; • Identifies and requests assistance or additional resources to correct the overflow or to assist in determination of its cause; • Takes immediate steps to stop the overflow, e.g. relieves pipeline blockage, manually operates pump station controls, repairs pipe, etc. Extraordinary steps may be considered where overflows from private property threaten public health and safety (e.g., an overflow running off of private property into the public right-of-way); and • Requests additional personnel, materials, supplies, or equipment that will expedite and minimize the impact of the overflow. 2. Initial Measures for Containment Initiate measures to contain the overflowing sewage and recover where possible sewage, which has already been discharged, minimizing impact to public health or the environment. • Determine the immediate destination of the overflow, e.g. storm drain, street curb gutter, body of water, stream bed, etc.; • Identify and request the necessary materials and equipment to contain or isolate the overflow, if not readily available; and • Take immediate steps to contain the overflow, e.g., block or bag storm drains, recover through vacuum truck, divert into downstream manhole, etc. 3. Recommended Action For Spills Occurring On: MAJOR INTERCEPTOR RIGHT OF WAY a. Put up warning tape "DO NOT ENTER "around SSO site to restrict access. b. In open areas lime, remove debris and lime site, rotor -till if needed. Re -seed and mulch with straw. C. In areas were there is undergrowth and small trees, flush area with potable water until no waste remains. Wait twelve to twenty four hours then lime the area. Be certain that lime does not flush to receiving stream. a SEWER OVERFLOW RESPONSE PLAN (SORP) NOTE: DO NOT LIME IF RAIN IS FORECAST. IN CITIZEN'S YARD a. Till entire area if possible. Apply lime and follow with seed and straw. b. If waste/debris not visible apply lime and 2 inches of top soil and mix thoroughly. Apply lime lightly, seed and mulch. ON ASPHALT OR CONCRETE a. Set up containment at or near the storm drainage system. Do not let the spill enter the storm drain system. b. Put up Black or Red "DO NOT ENTER" tape around the SSO area. c. Spread lime on spillage and sand or other material to a depth of one inch. Let this material absorb for one hour, then sweep up. Dispose of debris appropriately. (Call County Landfill). If spill is still evident repeat application. d. After removing the contaminated material, wash down area with high pressure water and bleach. e. Pump clean up materials and wash water into sanitary sewer. IN A CREEK OR STREAM a. Take conductivity readings of the creek upstream and downstream to determine where temporary dam should be placed. b. The dam should be constructed near a manhole which is accessible to the jet rodder and vacuum truck. c. Dam should be placed below the spill as indicated by low conductivity reading. d. Construct a dam sized to contain the flow of water plus any flush water added during clean up. e. Station the pumps at clean up site, one to use, one for back-up. f. Have a back hoe at the site for dam repairs as needed. g. Wash down all rip rap in stream bed until no residue is evident. h. Put up warning tape "DANGER: DO NOT ENTER" at spill site and 400 feet down stream. i. Pull stream samples for fecal coliform. Upstream and Downstream. j. Repeat sampling until normal, background counts 200 cts/100 ml. k. If settled sludge evident sweep bottom until clean. 1. If creek or stream ,is recreational water notify the affected community and local officials as soon as the problem is discovered. 7 SEWER OVERFLOW ONSE PLAN (SORP) 4. Additional Measures Under Potentially Prolonged Overflow Conditions In the event of a prolonged sewer line blockage or a sewer line collapse, set up a portable by-pass pumping operation around the obstruction. • Take appropriate measures to determine the proper size and number of pumps required to effectively handle the sewage flow. • Implement continuous or periodic monitoring of the by-pass pumping operation as required. • Address regulatory agency issues in conjunction with emergency repairs. 5. Cleanup Clean sewer overflow sites thoroughly after an overflow. No readily identified residue (e.g., sewage solids, papers, rags, plastics, and rubber products) is to remain. • Whenever possible digital photos should be taken of the area before and after cleanup. • Where practical, thoroughly flush the area and clean of any sewage or wash -down water. Solids and debris are to be flushed, swept, raked, picked -up, and transported for proper disposal. • Secure the overflow area to prevent contact by members of the public until the site has been thoroughly cleaned. • Where appropriate, disinfect and deodorize the overflow site. • Where sewage has resulted in ponding, pump the pond dry and dispose of the residue in accordance with applicable regulations and policies. • If a ponded area contains sewage, which cannot be pumped dry, it may be treated with bleach. If sewage has discharged into a body of water that may contain fish or other aquatic life, do not use bleach. Contact the NCDENR for specific instructions. D. Sewage Overflow Report The Sewer Overflow Report in Appendix A contains information which is required to be reported to NCDENR depending upon the nature of the spill. If the overflow will affect bathing areas during the bathing season, or public drinking water intakes, the U.S. Forest Service shall notify the NCDENR contact person orally, within two hours of becoming aware of the discharge. 8 SEWER OVERFLOW RESPONSE PLAN (SORP) If the overflow results in a fish kill, notify the NCDENR contact person within two hours of becoming aware of the discharge. The U.S. Forest Service Supervisor's Office / Engineering Department completes a Sewer Overflow Report (Ref. Appendix A). The U.S. Forest Service District Ranger promptly notifies the Supervisor's Office and NCDENR when the overflow is eliminated. Information regarding the sewer overflow includes the following: • Determination if the sewage overflow had reached surface waters, i.e., all overflows where sewage was observed running to surface waters, or there was obvious indication (e.g. sewage residue) that sewage flowed to surface waters; and • Determination that the sewage overflow had not reached surface waters by describing conditions at the sewage overflow, which support this determination. • Determination of the start time of the sewer overflow by one of the following methods: a. Date and time information received and/or reported to have begun and later substantiated by U.S. Forest Service personnel; b. Visual observation; • Determination of the stop time of the sewer overflow by one of the following methods: a. When the blockage is cleared or flow is controlled or contained; or b. The arrival time of the U.S. Forest Service personnel, if the overflow stopped between the time it was reported and the time of arrival. • Visual observations An estimation of the rate of sewer overflow in gallons per minute (GPM) by one of the following criteria: a. Direct observations of the overflow; or b. Measurement of actual overflow rate from the sewer main. • Determination of the volume of the sewer overflow • Photographs of the event, when possible. 9 SEWER OVERFLOW RES ONSE PLAN (SORP) • Assessment of any damage to the exterior areas of public/private property. U.S. Forest Service personnel shall not enter private property for purposes of estimating damage to structures, floor and wall coverings, and other personal property without authorization from the U.S. Forest Service Tusquitee District Ranger, IV. PUBLIC ADVISORY PROCEDURE This section describes the actions the U.S. Forest Service will take, in cooperation with the NCDENR, to limit public access to areas potentially impacted by unpermitted discharges of pollutants to surface water bodies from the wastewater collection system. A. Temporary Signage The U.S. Forest Service has primary responsibility for determining when to post notices of polluted surface water bodies or ground surfaces that result from uncontrolled wastewater discharges from its facilities. The postings do not necessarily prohibit use of recreational areas, unless posted otherwise, but provide a warning of potential public health risks due to sewage contamination. The U.S. Forest Service Tusquitee District Ranger will determine if posting of a confirmed overflow is necessary. B. Other Public Notification Should the posting of surface water bodies or ground surfaces subjected to a sewer overflow be deemed necessary, the U.S. Forest Service District Ranger determines the need for further public notification. V. REGULATORY AGENCY NOTIFICATION PLAN The Regulatory Agency Notification Plan establishes procedures, which the U.S. Forest Service follows to provide formal notice to the NCDENR as necessary in the event of a SSO. Agency notifications will be performed in parallel with other internal notifications. Internal notification and mobilization of U.S. Forest Service personnel are established in Section III - Overflow Response Procedure. Using data supplied during the verification process and updates from the U.S. Forest Service District personnel, the Tusquitee District Ranger prepares initial and final Overflow Reports. Initial report will be provided orally to the NCDENR within either two (2) hours or 24 hours from the time the U.S. Forest Service became aware of the SSO. If the overflow will affect bathing areas during the bathing season, or public drinking water intakes, the U.S. Forest Service shall notify the NCDENR contact person orally, within two hours of becoming aware of the discharge. If the overflow results in a fish kill, notify the NCDENR contact person within two hours of becoming aware of the discharge. 10 SEWER OVERFLOW RESPONSE PLAN (SORP) Prepare and provide final report to the regulatory agency within five (5) days after the U.S. Forest Service becomes aware of the overflow. Submit by mail. The U.S. Forest Service Tusquitee District Ranger is responsible for meeting the notification requirement. The U.S. Forest Service personnel prepares written notification to the appropriate regulatory agency of any confirmed overflows. The U.S. Forest Service Tusquitee District Ranger signs these notifications. The NCDENR contact person may waive the written report requirement on a case -by -case basis if the oral report was received within the required time frame. Regardless of other notifications, a Report of Noncompliance form is required to be submitted with the monthly Discharge Monitoring Report. A. Immediate Notification If the overflow will affect bathing areas during the bathing season, or public drinking water intakes, the U.S. Forest Service shall notify the NCDENR contact person orally, within two hours of becoming aware of the discharge. If the overflow results in a fish kill, notify the NCDENR contact person within two hours of becoming aware of the discharge. Fax the initial and any updated Sewer Overflow Report to: • NCDENR, Asheville Regional Office, Swannanoa, NC 28778-8211 Attn: Janet A. Cantwell Telephone: (828) 296-4500 Fax: (828) 299-7043 Report spills Monday -Friday 8 am-5 pm to the appropriate NC DENR-DWQ Regional Office. To report spills after hours or on weekends in North Carolina, call 800-858-0368. B. Secondary Notification U.S. Forest Service Tusquitee District Ranger may contact other agencies, as necessary, as well as other interested and possibly impacted parties. VI. MAINTENANCE OF SORP The SORP will be reviewed on an annual basis. Possible amendments can include: Change in procedures Change in contact personnel Changes due to regulatory requirements 11 Appendix A - Sanitary Sewer Overflow Report Form Appendix B - Sewer Overflow Notice Plan Flow Chart Appendix C - Sewer Overflow Response Tracking Protocol Appendix D - List of Public Offices to Report Overflow Appendix E - Suggested Criteria for Demonstrating How a Sewer Overflow was Unavoidable Appendix F - Measures to Avoid Sewer Overflow Appendix G - Overflow Descriptions and Required Notifications 12 SEWER OVERFLOW RESPONSE PLAN (SORP) Appendix A SANITARY SEWER OVERFLOW REPORT FORM 1. General Information a. NPDES # NC: 0021148 b. Name of collection system: Jackrabbit Mtn. Rec. Area WWTP c. Authorized representative filing this form: Name: Title: e-mail Address: d. Type of filing report: ❑ Initial ❑ Final e. Date of filing report: ❑ Initial ❑ Final 2. Oral Reporting of Overflow, Bypass or Upset All releases of untreated or partially treated sewage require 24-hour oral notification except those that require 2-hour oral notification. a. Overflow requiring 2-hour notification. ❑ Impact or closure of bathing area ❑ Impact or closure of public drinking water intake ❑ Results in fish kills ❑ Other: b. Overflow requiring 24-hour notification. ❑ Gravity sewer manhole ❑ Pump station ❑ Treatment plant bypass 13 SEWER OVERFLOW RL40NSE PLAN (SORP) ❑ Other c. Oral report to NPDES contact person. Name: Phone Number: e-mail Address: Date of phone notification: / 3. Overflow Location and Description a. Location: b. Discharge Location: ❑ Directly to receiving ground water ❑ Ground ❑ Receiving water via storm drain ❑ Building c. Type of overflow ❑ Gravity sewer manhole ❑ Pump station ❑ Bypass at treatment plan ❑ Other 4. Time of Overflow/Bypass Incident - When did the incident begin? Date: - Was the overflow/bypass event ongoing at the time of report: If yes, how long is the incident expected to continue? If no, when did event end? Date: / / Time: ❑ Yes []No SEWER OVERFLOW RESPONSE PLAN (SORP) 5. General Information about Overflow at this Location a. Estimated volume of overflow released at time of report: b. Method of estimating volume: c. Estimated total volume of overflow released at end of incident: d. Were digital photos taken: ❑ Yes ❑ No e. Corrective measures taken: ❑ No action ❑ Removed blockage ❑ Repair pump station ❑ Other: f. Cause of overflow/bypass (select all those that apply): ❑ Rain ❑ Snow melt ❑ High ground water ❑ Other excessive flow ❑ Sewer system blockage or collapse ❑ Pump /lift station failure ❑ Other: 15 ,) <o SEWER OVERFLOW RMPONSE PLAN (SORP) g. Additional comment: 16 SEWER OVERFLOW RESPONSE PLAN (SORP) FIVE DAY WRITTEN INCIDENT REPORT Complete the first five sections of this notification form and use the space below to include any additional information regarding the overflow. Include any steps taken or planned to prevent a recurrence. Submit this form to the regional NCDENR office within five days of becoming aware of the incident. 17 SEWER OVERFLOW R PONSE PLAN (SORP) Appendix B SEWER OVERFLOW NOTICE PLAN FLOW CHART — U.S. Forest Service / Tusquitee Ranger District / Jackrabbit Mtn. Rec. Area WWTP POSSIBLE SEWER OVERFLOW REPORTED U.S. Forest Service / Tusquitee Ranger District PERSONNEL MOBILIZED SEWER LOW ) I SEWERIRMED REPORT OVERFLOW COMPLETE INITIAL CONFIRMED CO FILE REPORT, NOTIFY PERFORM NOTIFY CALLER MAKING EVALUATION, N(&r Criteria REPORT DETERMINE CAUSE AND CORRECTIVE 24 Hour Criteria ACTION (See Appendix G) CORRECT CAUSE OF OVERFLOW I I CLEAN IMPACTED AREA I COMPLETE FINAL REPORT SEND REPORT TO NCDES Within 5 Days NOTIFY PERSONS IMPACTED BY THE OVERFLOW 18 SEWER OVERFLOW RESPONSE PLAN (SORP) Appendix C SEWER OVERFLOW (SSO) RESPONSE TRACKING PROTOCOL U.S. Forest Service / Jackrabbit Mtn. Rec. Area WWTP Step Event 1 Report of possible SSO received by a telephone operator / District personnel. 2 Telephone Operator enters received information into Sewer Overflow Report 3 Telephone Operator contacts Tusquitee District Ranger, which then deploys U.S. Forest Service District personnel to confirm reported SSO. 4 U.S. Forest Service District personnel reports back to the Tusquitee District Ranger reporting significance of the overflow. 5 Tusquitee District Ranger completes initial Overflow Report. If the overflow will affect bathing areas during the bathing season, or public drinking water intakes, the U.S. Forest Service shall notify the NCDES contact person orally, within two hours of becoming aware of the discharge. If the overflow results in a fish kill, notify the NCDENR contact person within two hours of becoming aware of the discharge. 6 Within 5 days the U.S. Forest Service District Ranger prepares final Overflow Report. Report is mailed to NCDENR. 7 Data from Overflow Report are entered into a permanent record on file at the U.S. Forest Service Supervisors' office in Asheville. 8 Attach Report of Noncompliance to Discharge Monitoring Report 19 SEWER OVERFLOW RENPONSE PLAN (SORP) Appendix D LIST OF PUBLIC OFFICES TO REPORT OVERFLOW — Jackrabbit Mtn. Rec. Area WWTP Contact Name Telephone Tusquitee District Office (828) 837-5152 Tusquitee District Office (828) 837-5120 Technician: Terry Dickey Tusquitee District Ranger (828) 83775116 Steve Lohr U.S. Forest Service Super. Office (828) 257-4208 Engineer: David Velez U.S. Forest Service Super. Office (828) 257-4231 Eng. Tech.: Charles Gay NCDENR (828) 296-4500 Janet A. Cantwell NCDENR (800) 858-0368 After Hours 20 SEWER OVERFLOW RESPONSE PLAN (SORP) Appendix E SUGGESTED CRITERIA FOR DEMONSTRATING HOW A SEWER OVERFLOW WAS UNAVOIDABLE —U.S. FOREST SERVICE / JACKRABBIT MTN. REC. AREA WWTP SSO's can be demonstrated as unavoidable by showing the discharge meets each of the criteria 1 through 5. 1. The discharge resulted from a temporary, exceptional incident that was either: A. Necessary to prevent loss of life, personal injury, or severe property damage B. Beyond the reasonable control of the operator. Incidents beyond the reasonable control of the operator would include: • Exceptional acts of nature; • Third party actions that could not be reasonably prevented, including vandalism that could not be avoided by reasonable measures; • Blockages that could not be avoided by reasonable measures; • Unforeseeable sudden structural, mechanical, or electrical failure that could not be avoided by reasonable measures. 2. The discharge had no feasible alternative 3. The discharge was not caused by any of the following; A. Operational error, B. Improperly designed or constructed collection system facilities, C. Inadequate collection system facilities or components, D. The lack of appropriate preventive maintenance, or E. Careless or improper oversight 4. Steps to stop the discharge, address the source of the problem, and mitigate potential impacts from the discharge were taken as soon as possible after becoming aware of the release. 21 Appendix F MEASURES TO AVOID SEWER OVERFLOW U.S. FOREST SERVICE / JACKRABBIT MTN. REC. AREA WWTP A. Proper Collection System Maintenance and Operations Program • Cleaning of pipes (grease, roots deposits) • Sealing or maintenance for deteriorating sewers • Remediation of poor/substandard construction (short term) • Sewer replacement or rehabilitation program (long term) • Proper maintenance and operations of pump stations • Inspection of private laterals B. New Wastewater Disposal System Construction • Use latest technology and standards in constructing new wastewater disposal system improvements • Perform proper construction inspection/quality assurance procedures 22 SEWER OVERFLOW RESPONSE PLAN (SORP) Appendix G OVERFLOW DESCRIPTIONS AND REQUIRED NOTIFICATION Overflows requiring 2-Hour Verbal Notification impact or closure of bathing area during bathing season (NCDENR) impact of closure of public drinking water intake (NCDENR) results in a fish kill (NCDENR) Overflows Reouirinu 24-Hour Notification gravity sewer manhole pump station sewer siphon treatment plant bypass NCDENR Asheville Regional Office Division of Water Quality Contact Person: Janet Cantwell 2090 US Hwy. 70 Swannanoa, NC 28778-8211 Tel: (828) 296-4500 Fax: (828) 299-7043 23 SORP for Jackrabbit Subject: SORP for Jackrabbit From: Charlie Gay <charliegay@fs. fed, us> Date: Mon, 20 Oct 2008 16:26:43 -0400 To: Janet.Cantwell@ncmail.net, Terry Dickey <tdickey@fs.fed.us>, Steve Lohr <slohr@fs.fed.us> CC: David Velez <dvelez@fs.fed.us>, Cliff Northrop <corthrop@fs.fed. us>, Lynn L Hicks <llhicks@fs.fed.us> Good afternoon to All, Last week Terry asked Engineering for a Sewer Overflow Response Plan (SORP) for Jackrabbit Treatment Plant. The need came up after inspection was performed by Ms. Cantwell of the NC Dept. of Environment and Natural Resources. After talking with Ms. Cantwell last week, I got some ideas of what she was looking for. By the way, thank -you Janet for your help. None the less, I finally put together a plan that is hopefully what the state is looking for. Additionally, I wanted a pretty comprehensive plan so that it can be adapted easily to the other locations throughout the state where we have treatment facilities. (See attached file: JackrabbitSSO.doc) Thanks, Charlie Gay Eng. Tech., NFsNC 160-A Zillicoa Street Asheville, NC 28801-1082 828-257-4231 (office) 828-273-2674 (cell) charliegay@fs.fed.us Content -Type: application/msword JackrabbitSSO.doc Content -Encoding: base64 1 of 1 12/8/2008 12:11 PM 0 .0 State ot`North Carolina Department of Environment, Health and Natural 1' ources Water Pollution Control System Operators Certification Commission James B. Hunt, Jr., Governor Jonathan B. Howes, Secretary Steve W. Tedder, Chairman March 7, 1994 MIKE SORRELLS USDA JACKRABBIT MNT REC AREA PO BOX 2750 ASHEVILLE NC 28802 Subject: Classification of Collection Systems NPDES Permit No. NCO021148 Clay County Dear Mr. Sorrells Because of the environmental and health risks that can be associated with improperly operated and maintained collection, systems, new regulations were recently enacted that require certain collection systems to be classified and for the classified system to designate an operator in responsible charge. The regulations, effective July 1, 1993, require that collection systems that are operated in conjunction with wastewater treatment facilities permitted to municipalities, regional facilities or water and sewer authorities, public utilities, Class III and Class IV state-owned facilities and Class II, Class III and Class IV federally owned facilities be subject to rating as a collection system. The collection system will be assigned the same classification as the wastewater treatment facility to which it is tributary or the collection system will be assigned a classification based on the population served by the collection system, whichever would provide the lower classification. Any collection system, regardless of ownership, may be classified if it is determined by the Commission or its designees that there is a failure to properly operate and maintain the system. Once a collection system is classified, the permittee must designate an operator of the appropriate grade to operate the collection system. The Commission will establish a date for the designation of the operator that will allow the permittee a sufficient time frame for training and certifying an operator. The initial classification of the collection systems will be a lengthy and arduous task. The first step in classifying the systems will be collecting the data that is essential in identifying the systems and other relevant information. The information requested on the enclosed form will provide the Commission with much of the material needed for the classification of the collection system. Please route the Collection System Information form to the appropriate person, have them complete it and return the completed form by April 15, 1994 to: Division of Environmental Management Training and Certification Unit Collection System Information P.O. Box 29535 Raleigh, N.C. 27626-0535 Thank you for your time in assisting us with this task. If you have any additional comments or questions, please call Dwight Lancaster at (919) 733-0026. Sincerely; It I Cindy Finan, Supervisor Training & Certification Unit P.O. Box 29535, Raleigh, North Carolina 27626-0535 Telephone 919-733-0026 FAX 919-733-1338 An Equal Opportunity Affirmative Action Employer 50/ recycled/ 10% post -consumer paper E