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
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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
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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
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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
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McGill Associates, P.A. i
Clay County
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Design Calculations
Jackrabbit Campground Sewer Extension
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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
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2.0 DESIGN FLOW
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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
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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
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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
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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
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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
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under similar influent flow conditions.
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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
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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
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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
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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
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McGill Associates, P.A.
9
Clay County
Design Calculations
Jackrabbit Campground Sewer
Extension
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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
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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.
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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
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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
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