HomeMy WebLinkAboutNC0088099_Permit Issuance_20051230Michael F. Easley, Governor
State of North Carolina
William G. Ross, Jr., Secretary
Department of Environment and Natural Resources
Alan W. Klimek, P.E., Director
Division of Water Quality
December 30, 2005
Mayor Rick Owen
208 Grassy Gap Creek Road
Beech Mountain, North Carolina 28604
Subject: Issuance of NPDES Permit
NCO088099
Buckeye Lake WTP
Watauga County
Dear Mayor Owen:
Division personnel have reviewed and approved your application for renewal of the subject
permit. Accordingly, we are forwarding the attached NPDES discharge permit. This permit is issued
pursuant to the requirements of North Carolina General Statute 143-215.1 and the Memorandum of
Agreement between North Carolina and the U.S. Environmental Protection Agency dated May 9,1994 (or
as subsequently amended).
This final permit contains no significant changes from the draft you were sent on November 9, 2005.
If any parts, measurement frequencies or sampling requirements contained in this permit are
unacceptable to you, you have the right to an adjudicatory hearing upon written request within thirty
(30) days following receipt of this letter. This request must be in the form of a written petition,
conforming to Chapter 150B of the North Carolina General Statutes, and filed with the Office of
Administrative Hearings (6714 Mail Service Center, Raleigh, North Carolina 27699-6714). Unless such
demand is made, this decision shall be final and binding.
Please note that this permft is not transferable except after notice to the Division. The Division
may require modification or revocation and reissuance of the permit. This permit does not affect the
legal requirements to obtain other permits which may be required by the Division of Water Quality or
permits required by the Division of Land Resources, the Coastal Area Management Act or any other
Federal or Local governmental permit that may be required.
If you have any questions concerning this permit, please contact Toya Fields at telephone
number (919) 733-5083, extension 551.
Sincerely
ova r;11�l'anW.(•Klimek, P.E.
cc: Central Files i
Asheville Regional Office/Surface Water Protection
WIPDES Unit
Richard A. DeMott Watauga River Conservation
784 Alpine Drive., Seven Devils
Banner Elk, NC 28604-7980
1617 Mail Service Center, Raleigh, North Carolina 27699-1617 Telephone (919) 733-7015 FAX (919) 733-0719 N,amp�`thCaroJina
512 N. Salisbury Street, Raleigh, North Carolina 27604 On the Internet at http://h2o.enr.state.nc.us/ ,/Vlltl[CR(/f/
An Equal Opportunity/Affirmative Action Employer
Permit NCO088099
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF WATER QUALITY
PERMIT
TO DISCHARGE WASTEWATER UNDER THE
NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM
In compliance with the provisions of North Carolina General Statute 143-215.1, other lawful
standards and regulations promulgated and adopted by the North Carolina Water Quality
Commission, and the Federal Water Pollution Control Act, as amended,
The Town of Beech Mountain
is hereby authorized to discharge wastewater from a facility located at
Buckeye Lake WTP
Grassy Gap Creek Road
Beech Mountain
Watauga County
to receiving waters designated as Buckeye Creek in the Watauga River Basin in accordance
with the discharge limitations, monitoring requirements, and other conditions set forth in
Parts I, II, III, and IV hereof.
This permit shall become effective February 1, 2006.
This permit and the authorization to discharge shall expire at midnight on September 30, 2007.
Signed this day December 30, 2005.
al
Wan W. Klimek, P.E., Director
'vision of Water Quality
By the Authority of the Environmental Management Commission
• � a
Permit NCO088099
SUPPLEMENT TO PERMIT COVER SHEET
All previous NPDES Permits issued to this facility, whether for operation or discharge are hereby revoked. As of
this permit issuance, any previously issued permit bearing this number is no longer effective. Therefore, the
exclusive authority to operate and discharge from this facility arises under the permit conditions, requirements,
terms, and provisions included herein.
The Town of Beech Mountain. is hereby authorized to:
1. Operate an existing water treatment plant consisting of the following components:
➢ Two 750 GPM raw water pumps
➢ Two sedimentation basins with tube settlers and 40 minute detention time
➢ Two high -rate multi -media filters
➢ 300,000 gallon finished water clearwell
➢ Two 750 GPM high service pumps
➢ Liquid chemical feed system
➢ Gas chlorination and ammonia feed systems
This facility is located at 208 Gassy Gap Creek Road, Beech Mountain, Watauga
County.
2. Upon receipt of an Authorization to Construct from the Construction Grants and
Loans Section, discharge wastewater from said treatment works at the location
specified on the attached map into Buckeye Creek which is classified C; Tr waters in
the Watauga River Basin.
Buckeye Lake WTP — NCO088099
USGS Quad Name: Elk Park Lat.: 36°13'15"
Receiving Stream: Buckeye Creek Long.: 81°54'27"
Stream Class: C; Tr
Subbasin: Cape Fear — 04 02 01
Permit NCO088099
AM. EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS
During the period beginning upon receipt of an Engineers Certification and lasting until permit
expiration, the Permittee is authorized to discharge filter backwash water from outfall serial number 001.
Such discharges shall be limited and monitored by the Permittee as specified below:
EFFLUENT
CHARACTERISTICS
MONITORING REQUIREMENTS
Monthly
Average
Daily
Maximum
Measurement
FrequencV
Sample
Type
Sample
Location*
Flow
Weekly
Estimate
E
Total Suspended Solids
30 mg/L
45 mg/L
Weekly
Grab
E
Settleable Solids
0.1 ml/L
0.2 ml/L
Weekly
Grab
E
Turbidity
10 NTU
Weekly
Grab
U, D
Iron
Weekly
Grab
E
Total Residual Chlorine
17.0 pg/L
Weekly
Grab
E
Aluminum
Weekly
Grab
E
Notes:
* Sample locations: E - Effluent, I - Influent, U - Upstream of the discharge point, D — Downstream 300
feet from the discharge point.
There shall be no discharge of floating solids or foam visible in other than trace amounts.
NCDENR/DWQ
FACT SHEET FOR NPDES PERMIT DEVELOPMENT
Town of Beech Mountain
NCO088099
Fitt^ ,:s &•,^".,-^,—
`T ''Z`i1S w"�.ixr " a.t
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---'-,+sf�- �a , , t i k � , a, w
•`�'•"""' t j � �0 3` yr,1 {E 4 Ci3 , 7...�....-_..7...,.. �St ,�k efFtile..... ..3....`�..1�'.�.x+.' .C#�'S. e icF �'F'E^o
(1.) Facility Name:
Bu_ckee Lake WTP
_
(2.) Permitted Flow (MGD):
None (6.) County:
Watauga
(3.) Facility Class:
I (7.) Regional Office:
Winston Salem
(4.) Pretreatment Program:
N/A
(8.) USGS To o Quad:
C11NW
(5.) Permit Status:
New (9.) USGS Quad Name:
Elk Park
6L.v..1•i�... f .-iiL: "J_ Z .�:..5,..T'.:'_`��
xt Iw «.JF .ir•- � ��i tt s,..s.
h•sv.�^"."' 77 �.. ,.i'-•,'i.�a
(1.) Receiving Stream:
Bucke a Creek
(7.) Draina a Area (mi2):
3.4
(2.) Sub -basin:
04 02 01
(8.) Summer 7Q10 (cfs):
1.9
(3.) Stream Index Number:
(9.) Winter 7Q10 (cfs):
1.1
(4.) Stream Classification:
(5.) 303(d) Status: _._._. W w
(6.) 305(b) Status:
C; Tr -
Not listed w
(10.) 30Q2 (cfs):
(11.)_AveraI Flow (cfs):
�(12.) IWC %:
2.5 Y
µ7.0µ~
N/A (no flow limit)
Summary
The Town of Beach Mountain's Buckeye Lake water treatment plant is located in Watauga
County along Grassy Gap Creek Road near Buckeye Creek, which is classified as Class C; Tr
waters in the Watauga River Basin. This is an existing, high -rate water filtration plant.
Previously the backwash water from the plant was decanted in two alum sludge storage basins
and then subsequently pumped back to the head of the plant and mixed with raw water for
treatment. However public water supply regulations prohibit 100% recycle systems in water
treatment plants. Tony Chen of the Public Water Supply section has spoken with both the town
and the NPDES unit about this requirement.
The WTP treats water from Buckeye Lake, a manmade impoundment with a storage volume of
approximately 50 million gallons. Process wastewater generated by the WTP includes the alum
sludge collected in the sedimentation basins. Filter backwash water also flows to the sludge
holding basins at a maximum rate of 1300 gpm. On average, each filter is backwashed once every
3 days. The total volume of wastewater from the sedimentation basins and filter backwash
averages approximately 20,000 GPD. Alum sludge is allowed to settle in the sludge holding
basins and the solids are periodically removed and disposed of offsite. Previously, decant from
the holding basins flowed to the decant pump station where it was currently pumped back to the
head of the treatment plant. Pumping back to the head of the plant occurred intermittently, as
needed, at a design rate of 100 gpm. Currently, the town intends to use existing on -site piping to
redirect the flow from the head of the plant to a discharge point alone buckeye Creek. The
existing pumps would be used.
This facility will receive new permit limits consistent with current requirements for conventional
water treatment plants.
Flow estimates were obtained from nearby USGS station #0347927165 approximately 500 feet
upstream. The estimate was performed 5/5/87.
4
784 Atp.ine DA., Seven Dev.ita
Banner Etk, NC 28604-7980
Novembers 25, 2005
NC D.iv.ib.ion ob Wateh. Zuat.ity
1617 Ma.it Service Centet
Rate.igh, NC 27699-1617
RE: NPDES Permit Numbers N00088099, The Town o5 Beech Mountain,
(208 GAaeby Gap CAeek Rokd; Beech Mountain)
Dean NPDES Sta46;
In ne&zAence to the appt.ica.t.noh :jo& aenewat ob the
PeAm.it Numbers NCO088099 above I are.awate there have, been pro -
ten* and Wotat.ionb oveA the yeaAb with th.ib and the other
wastewate�xr,treatment ptant on the Town. Therefore, g?.ven the
Aeeent huAA.icane ev.enth, I $eet .it prudent that the ghant.iny
og att Aenewat penm.itb be eonsidened very earebutty and the
current d.i.6chargeb and butune attoeat.iona have carejut
a crut.iny.
S.ineenety,
Richard A. DeMott
Chain
Watauga River Conhervat.ion
PaAtneAe ehapteA ob the
Weatenn NoAth Carot.ina Att.ianee
NOV 2 9 2005
J
AFFIDAVIT OF PUBLICATION
Acct. Name: NORTH CAROLINA-WATAUGA COUNTY
NCDENR/DWQ/NPDES
Before the undersigned, a Notary Public of said Count,
and State, duly commissioned, qualified and authorized by the
Acct. # 112162
law to administer oaths, personally appeared:
COST OF PUBLICATION
1
Z
Total $59.50
PUBIJC NOTICE
STATE OF NORTH CARAROUNA
Who being first duly sworn, deposes and says: that he (she) is
ENVIRONMENTAL MANAGEMENT
COMMISSION NPDES UNIT
1617 MAIL SERVICE CENTER
REPRESENTATIVE
RALEIGH, NC 27699-1617
TENT
NonPITO ON OF ISSUE A,
of a newspaper known as THE WATAUGA DEMOCRAT, publishe
NPDES WASTEWATER PERMIT
issued and entered as second class mail in City of Boone,
On the basis of thorough staff review
in said County and State; that he (she) is authorized to make
and 43.21, ub°"°f 92-500,al Statute
143.21, Public law 92-500 and other
other
this affidavit and sworn statement; that the notice of other legal
g
lawful standards and regulations, the
advertisement, a true copy of which is attached hereto, was
North Carolina Environmental Man-
agement Commission proposes to
published in THE WATAUGA DEMOCRAT the following dates:
Issue a National, Pollutant Discharge
Elimination System (NPDES) waste-
water discharge pemdttothe person(s)
PERMIT NC0088099*
listed below effective 45 days from the
publish date of this notice.
11 /11 /2005
Written comments regarding the pro-
posed permit will be accepted unfit 30
days after the. publish date of this
notice. All comments received prior to
that date are considered in he final
determinations regarding the pro-
posed permit The Director of the NC
Division of Water Quality may decide
to hold a public meeting for the pro-
posed permit should the Division re-
ceive a significant degree of public
interest.
Copies of the draft permit and other
supporting information on file used to
determine conditions present in the
draft permit areal of
and payment of the costsofP
lhe costs
and that the said newspaper in which such notice, paper,
P
reproduction. Mail comments and/or
document or legal advertisement was published was, at the time
requests for Information to the NC Dk
vision of water Quality at the above
of each and every such publication, a newspaper meeting all of
addressor call the Point Source
Branch at 919-733-5083, extension
the requirements and qualifications of Section 1-597 of the
520. Please Include the NPDES permit
General Statutes of North Carolina and was a qualified
number Interested persons also ca-
Don. Interested persons may also visit
may
newspaper within the meaning of Section 1-597 of the General
the Division of Water Quality at 512 N.
Statutes of North Carolina.
Salisbury Street, Raleigh, NC 27604
1148 between the hours of 8:00 a.m.
and 5:00 p.m. to review information on
file. -
W-r,,;-;
This 11th day of November, 2005
o
,
The Town of Beech Mountain (208
a
Grassy Gap Creek Road, Beech
Mountain, NC 28604) has applied for
C)
•--•�
C.)renewal
of NPDES permit NC0088099
for he Buckeye take WTP in Watao-
^ '
' - S%koI n to and subscribef1defore me, this
ga county. This permitted facility dls-
charges treated wastewater to Buck-
1,tli day Of November, 2005
""
eye Creek inWatauga Basin.
/1
no p
Currently no parameters are water
are
_
� ,��//'r/
quality limited, however this discharge
l/
may affect future allocations in this
portion of the Watauga River Basin.
Notary Public
My Commission Expires: , (J Z-�- mac/ ZQ c%
f
DAVIS-MARTIN-POWELL & ASSOCIATES, INC.
ENGINEERING • LAND PLANNING • SURVEYING
6415 Old Plank Road, High Point, NC 27265
IIIIIIIIIIIIIIIIP (336) 886-4821 • Fax (336) 886-4458 • www.dmp-ine.com
April 15, 2005
Re: Town of Beech Mountain
WTP NPDES Permit Application
DMP Proje6t-E-3695 ...... :_._....:
Ms. Letoya D. Fields
NPDES Western Unit
North Carolina Division of Water Quality
1617 Mail Service Center
Raleigh, NC 27699-1617
Dear Ms. Fields:
p [��1C
APR 2 512 005 �
DENR - WATER QUALITY
POINT SOURCE BRANCH
Davis -Martin -Powell & Associates is responding to your letter dated March,31; 2005 regarding the Town s
of Beech Mountain's Buckeye Lake WTP NPDES permit application. We have addressed the information
in the letter you provided as follows: "' " " ; " "— -
1. Please provide more detailed information on the difficulties associated with the current method
of backwash disposal Why is recirculation no longer a feasible option? Include any available
supporting documentation.
As mentioned in the EAA, the practice of circulating backwash water back to the head of
the plant is not longer looked favorably upon. The NCDENR Public Water Supply Section
has indicated that the Town of Beech Mountain needs to eliminate the current practice of
recirculating the decant water and find a new alternative for disposal.
2. Please provide a further analvsis of the non -discharge_ options specifically spray and dri
irrigation Alternative B of our EAA Guidance discusses items that should be specifically
considered when evaluating these options Please pay particular attention to items #1 and #2
under this sub -heading. Also, please provide rough cost estimates for these options as well as
for the surface water disposal option.
We have included calculations with regards to the amount of acreage potentially needed
for a non -discharge subsurface system assuming a loading rate based on discussions with
County Health Departments in that area. In addition, we have included potential costs for a
subsurface and spray irrigation system, based upon previous projects our office has
completed.
3. The analysis mentions that the Grassy Gap WWTP is nearby. What is the permitted flow for this
facility? What are their current average flows? Please provide a preliminary indication of flow
acceptance from the WWTP If the plant cannot accept the wastewater, include a letter
documenting such and consider this alternative technologically infeasible.
The Grassy Gap WWTP has a permitted flow of 0.08 MGD and with average flows of
approximately 0.05 MGD. As mentioned in the EAA, if the decant water was disposed at
the WWTP the Town would lose this amount of flow designated for growth and
development. We have included a letter from the Town in the EAA.
A Ms. LeToya Fields
NPDES Westem Unit April 15, 2005 Page 2
On behalf of the Town of Beech Mountain, Davis -Martin -Powell & Associates is re -submitting the NPDES
permit application for your approval. We trust the above changes to the EAA will satisfy the information
deficient in the original submittal and will allow you to make a thorough and timely review of this project.
Enclosed, you will find the following items for your review of the referenced project:
• One (1) original and four (4) copies of the NPDES Permit Application — Short Form C-WTP;
• One (1) original and four (4) copies of the Engineering Alternatives Analysis;
• One (1) check (check no. 024938) in the amount of $715.00 for the NPDES Permit fee.
If you have any questions or require additional information, please give me call. We appreciate your
assistance with this matter and look forward to hearing from you.
Sincerely,
DAVIS-MARTIN-POWELL & ASSOCIATES, INC.
Michael Goliber, PE
MPG/mpg
C: Mr. Seth Lawless (enc)
File (enc)
TOWN OF BEECH MOUNTAIN
BUCKEYE LAKE WATER TREATMENT PLANT
DECANT WATER DISPOSAL
ENGINEERING ALTERNATIVES ANALYSIS
DMP Project E-3695
Prepared by:
DAVIS-MARTIN-POWELL & ASSOCIATES, INC.
ENGINEERING • LAND PLANNING • SURVEYING
6415 Old Plank Road
High Point, North Carolina 27265
Phone (336) 886-4821 - Fax (336) 886-4458
April 2005
='1 = SEAL c
t 0249660�{
�� �+•,•�NGIINE II�Q�rff�v�
P;���`` ���
Town of Beech Mountain WTP - Engineering Alternatives Analysis
1. INTRODUCTION
The purpose of this Engineering Alternatives Analysis Report (EAA) is to evaluate
disposal options for the Town of Beech Mountain Buckeye Lake Water Treat Plant
decant backwash water, ultimately arriving at a recommended disposal alternative for
the Town of Beech Mountain. The EAA will include the following information:
• General application information
• Reasonable flow projections
• Evaluation of technologically feasible alternatives
• Evaluation of the economic feasibility of reasonable alternatives
This report summarizes site -specific options including connecting to an existing
municipal wastewater system, constructing an on -site surface or subsurface system,
developing a water reuse system, and having a direct discharge to surface waters.
2. GENERAL INFORMATION
• The proposed project will divert the existing water treatment plant alum sludge
lagoon decant pump station from recycling decant water to the head of the
water treatment plant to a new proposed surface water discharge along Buckeye
Creek.
• ADnlicant Information
o Town of Beech Mountain
0 403 Beech Mountain Parkway, Beech Mountain, NC 28604
o (828) 387-4236
o Mr. Seth Lawless
• Facility Information
o Buckeye Lake Water Treatment Plant
0 208 Grassy Gap Creek Road, Beech Mountain, NC 28604
o Watauga County
o (828) 387-9368
o Gary McKinney
• EAA Preparer's Name
o Davis -Martin -Powell & Associates
0 6415 Old Plank Road, High Point, NC 27265
o (336) 886-4821
o Mr. Ed Powell, PE
PAPR0JECT16eechMtn\E3695 - WTP NPDES\Beech WTP EAA REVISED 041505.doc 1
Town of Beech Mountain WTP - Engineering Alternatives Analysis
3. BACKGROUND INFORMATION
The Town of Beech Mountain's Buckeye Lake Water Treatment Plant is located in
Watauga County along Grassy Gap Creek Road near Buckeye Creek, which is
classified as Class C Trout waters in the Watauga River Basin. The existing water
treatment plant, which serves the residents of the Town of Beech Mountain and
surrounding area, is a high rate water filtration treatment plant. Currently the backwash
water from the plant is decanted in two alum sludge storage basins, which is
subsequently pumped back to the head of the plant and mixed with raw water for
treatment. With changes in regulations becoming increasingly more stringent, the
practice of circulating backwash water to the head of the plant is no longer looked
favorably upon as a viable option and the NCDENR Public Water Supply Section has
requested the Town pursue another option for disposal.
The Town of Beech Mountain's Buckeye Lake Water Treatment Plant does not currently
operate under an NPDES permit. However, since pumping the backwash water back to
the head of the plant is no longer a technically feasible option, an NPDES permit may
be necessary in order to discharge the filter backwash into Buckeye Creek.
4. EXISTING SYSTEM
The Buckeye Lake Water Treatment Plant is a 1.0 MGD high rate water filtration plant,
utilizing Neptune MicroFloc package treatment components and consisting of the
following treatment processes:
❑ Two 750 GPM Raw Water Pumps
❑ Two sedimentation basins with tube settlers and 40 minute detention time
❑ Two high rate multi -media filters
❑ 300,000 gallon finished water clearwell
❑ Two 750 GPM high service pumps
❑ Liquid chemical feed systems for alum, caustic, and corrosion inhibitor
❑ Gas chlorination and ammonia feed systems
The WTP treats water from Buckeye Lake, a manmade impoundment with a storage
volume of approximately 50 million gallons. Process wastewater generated by the WTP
includes the alum sludge collected in the sedimentation basin, which is periodically sent to
the sludge holding basins, by emptying the sedimentation basins. Filter backwash water
PAPROJECT\BeechMtn\E3695 - WTP NPDESIBeech WTP EAA REVISED 041505.doc 2
Town of Beech Mountain WTP - Engineering Alternatives Analysis
also flows to the sludge holding basins, at a maximum rate of 1300 gpm. On average,
each filter is backwashed once every three days. Total volume of wastewater from the
sedimentation basins and filter backwash averages approximately 20,000 GPD. Alum
sludge is allowed to settle in the sludge holding basins, and the solids are periodically
removed and disposed of offsite. Decant from the holding basins flows to the decant
pump station where it is currently pumped back to the head of the treatment plant.
Pumping back to the head of the plant occurs intermittently, as needed, at a design rate of
100 gpm.
As mentioned previously, the current method of pumping the decant water back to the
head of the plant is no longer a viable option. Therefore a new method of discharge and
disposal for the decant water needs to be established.
5. ALTERNATIVE IMPROVEMENT ANALYSIS
Non -Discharge Sub -surface System
Conventional or low-pressure sub -surface disposal would eliminate the circulating of
decant water to the head of the plant and provide a disposal option other than
discharging decant water to surface waters. However, several factors must be satisfied
to make these options feasible. Suitable soil must be available with a minimum depth of
30 inches and an acceptable texture and permeability. Based on the suitability of the
on -site soil, a hydraulic loading rate of between 0.2 and 1.2 gallons per day per square
foot would need to be determined by a soil scientist. Using the established soil loading
rate and the average daily flow, the size of the distribution field can be determined. A
reserve area equal to 100% of the design area is also required. Both areas must have
suitable topographic features. Slopes should be no greater than 10 percent and all
drainage must be diverted away from the disposal area. There are many restrictions
such as setback distances from property lines and structures that limit the location of
the disposal field as well. Extensive on -site soil surveys must be conducted with this
option to determine if suitable soils and land is available. Based on soil loading rates
and topographic features, a selection to use either a conventional septic tank
nitrification system or low-pressure pipe system would be made.
Land used for and reserved for low-pressure or conventional nitrification disposal
systems must be protected from heavy equipment and/or extensive activity that would
threaten the survival of established vegetation or compact the soils in any way. Sub-
P:\PR0JECT\13eechMtn\E3695 - WTP NPDES\Beech WTP EAA REVISED 041505.doc 3
Town of Beech Mountain WTP - Engineering Alternatives Analysis
surface systems of this size also have requirements for ongoing groundwater
monitoring. In addition operational and maintenance considerations must be made with
the septic tanks and distribution system pumps associated with an on -site disposal
system.
Assuming an LTAR of 0.40 gpd/sq ft and an average flow of 20,000 gpd calculations
show that a pressure manifold subsurface system would require over 7 acres of land for
the active drainfield area along with an additional 7 acres for repair area. Assuming this
amount of land was available, experience has shown that a system of this size could
potentially exceed $1,000,000. A brief calculation of acreage required has been
included with this EAA.
Due to the above factors as well as the costs associated with an on -site system, this
alternative is not a technically or economically feasible option and will not be
considered further.
Non -Discharge Spray Irrigation
Spray irrigation systems also would eliminate the circulating of decant water to the head
of the plant and provide a disposal option other than discharging decant water to
surface waters. As required by sub -surface disposal, spray irrigation systems are
dependent upon existing soil conditions. Soil conditions must be analyzed for texture
and permeability to a depth of seven feet. Based upon the slopes of the existing
ground (not to exceed 10%) and the suitability of the existing soils, a maximum weekly
and yearly application, rate can be determined. After determining the weekly and yearly
application rates, the area required for spray irrigation can be determined. A fence to
protect it from heavy traffic and to insure that adequate groundcover is maintained must
surround the entire application area. A spray irrigation system will also require a 5-day
storage volume, because effluent cannot be applied during wet weather. In addition,
there are many restrictions such as setback distances from property lines and
structures that limit the location of a spray disposal field. No activity is permitted in the
areas designated for application of wastewater and these areas are deemed off limits for
general use. In addition to an on -site soil survey to determine the suitability of the soil
for a spray irrigation disposal system, ground water monitoring wells may be required.
As with the subsurface option, assuming adequate land is available for a spray irrigation
system, experience has shown that a system this size could exceed $1,000,000. Due to
P:IPROJECT1BeechMtn1E3695 - WTP NPDESIBeech WTP EAA REVISED 041505.doc 4
Town of Beech Mountain WTP - Engineering Alternatives Analysis
the above restrictions and potential costs a spray irrigation disposal system is not
feasible for this site and will not be considered further.
Wastewater Reuse System
As with the spray irrigation system and the subsurface disposal system, the water reuse
system has several technological and economical disadvantages. Additional site piping
along with a reuse pump station and would need to be constructed for a water reuse
system. Also, sufficient storage would be required, to allow for times when effluent
cannot be applied during inclement weather. Related costs such as engineering, land
purchasing and contingencies would further increase the capital cost. Due to these
factors as well as the costs associated with an on -site system reuse system, this
alternative is not a technically or economically feasible option and will not be
considered further.
Transfer to Public Sewer System
Connecting to a municipal sewer system would provide the opportunity to eliminate
recycling the decant water to the head of the plant and would also eliminate the need for a
surface water discharge. While the proximity of the Buckeye Lake Water Treatment Plant
to the Grassy Gap Wastewater Treatment Plant provides an excellent opportunity to
discharge directly to the wastewater treatment facility, there are also several disadvantages
to this option. The biggest disadvantage to transferring the decant wastewater to the
Grassy Gap WWTP would be that the Town would lose this amount of flow from the
current flow allocation currently designated for future growth and development in the Town
of Beech Mountain. In addition, the chemical treatment process used at the Buckeye Lake
Water Treatment Plant may have an impact on the treatment capabilities at the Grassy Gap
WWTP. This could lead to changes in the treatment process at the Grassy Gap WIMP or
additional monitoring requirements for the Grassy Gap NPDES permit. Due to these
factors as well as the costs associated with transferring to the Grassy Gap WWTP, this
alternative is not a technically or economically feasible option and will not be considered
further. A letter from the Town of Beech Mountain, stating the above burden with respect
to flow allocation has been included with this EAA.
PAPROJECT113eechMtn1E3695 - WTP NPDESIBeech WTP EAA REVISED 041505.doc 5
Town of Beech Mountain WTP - Engineering Alternatives Analysis
Surface Water Discharge
A surface water discharge would provide the opportunity to eliminate recycling the decant
water to the head of the plant and would also provide the most technologically and
economically feasible option. The proximity of the Buckeye Lake Water Treatment Plant to
Buckeye Creek, classified Class C, Trout Water in the Watauga River Basin, allows for a
short distance from the existing decant pump station to the creek. In addition, this option
would allow the Town of Beech Mountain to utilize existing on -site piping to redirect the
flow from the head of the plant to a discharge point along Buckeye Creek. Also, due to the
topography at the location of the water treatment plant the existing pumps would be able
to be utilized with the new discharge option, eliminating the capital cost of purchasing new
pumps or building a new pump station. In addition, since the maintenance staff at the
Buckeye Lake WTP currently operates and maintains the existing decant pump station
there would also be no additional operational cost with this option.
With the exception of purchasing and implementing a de -chlorination system to the new
discharge there would be very minimal capital costs associated with this option.
Compared with the extreme costs associated with the subsurface option or spray irrigation
option, the surface water discharge option is by far the most economically feasible option.
6. RECOMMENDED ALTERNATIVE
Based on the information presented above, it is recommended that the Surface Water
Discharge option is implemented to provide an alternative to recycling the decant water
to the head of the water treatment plant. This option provides the most technologically
feasible option and with the exception of the de -chlorination system for the new
discharge there would be very minimal capital costs or operation and maintenance
costs associated with this option.
PAPROJEC IABeechNn1E3695 - WTP NPDES\Beech WTP EAA REVISED 041505.doc 6
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DAV I S-MARTI N -POWELL 8t ASSOCIATES, INC. TOWN OF BEECH MOUNTAIN, NORTH CAROLINA
ENGINEERING - LAND PLANNING - SURVEYING BUCKEYE LAKE WATER TREATMENT PLANT
61-15 01.0 PLANK ROAD PROPOSED NPDES DISCHARGE LOCATION
HIGH POIINT, NORTH CAROLINA 27265 SCALE: 1 " = 3000 FT
(336) 886-LB21 FAX (336) 836-L&53 USGS QUADS: ELK PARK & VALLE CRUCIS
Town of Beech Mountain
BUCKEYE LAKE WTP
WATAUGA COUNTY, NORTH CAROLINA
DECANT WATER DISPOSAL POTENTIAL NON -DISCHARGE WASTEWATER SYSTEM SIZING
SUBSURFACE CONVENTIONAL SYSTEM WITH PRESSURE MANIFOLD
Assume: Gallons/Day 20,000
Assume: LTAR gpd/ft ^ 2
Disposal Area, sq. feet
Trench width, feet
Trench length, feet
Assume: Avg Trench Spacing
Minimum Area Needed, sq ft
Minimum Drainfleld Area Needed, acres
Land Area Safety Factor
Potential Active Drainfield Area Needed, acres
Repair Area Needed (100% of Active Area), acres
Total Area Needed, acres
0.40
50,000 (required trench area)
3
16,667 (Would require approx. 85 laterals
@ 200 LF/each, or variation)
15 (minimum spacing is 9 ft)
250,000
5.74
1.25
7.17
7.17
14.35
DAVIS-MARTIN-POWELL ASSOCIATES Non -Discharge Estimate.As - SUBSURFACE WWTF E-3623 4/15/2005
AA
TOWN OF
BEECF7
MOUNTAIN
Seth Lawless, Manager
David R. Paletia, Attorney
April 15, 2005
Town o4:
Beecb Mountain
403 Beech Mountain Parkway
Beech Mountain, North Carolina 28604-8012
Phone: 828/387-4236
Fax: 828/387-4862
E-mail: beechmtntown®skybest.com
Re: Town of Beech Mountain Buckeye Lake WTP
NPDES Permit Application, DMP Project E-3695
Mr. Michael Goliber, PE
Project Engineer
Davis -Martin -Powell & Associates
6415 Old Plank Road
High Point, NC 27265
Dear Michael:
Mayor
Rick Owen
Vice Mayor
Gil Adorns
Council Members
Paul Piquet
Peter K. Chamberlin
Edward J. Wallgroskl
APR I R 2005
The Town of Beech Mountain understands that one alternative identified for a proposed
discharged option for the Town's Buckeye Lake Water Treatment Plant decant water is to
discharge to the Grassy Gap WWTP.
The Grassy Gap WWTP has a permitted capacity of 0.08 MGD and the average flow at this plant
is approximately 0.05 MGD, based on monthly discharge monitoring reports. Due to the size of
our WWTP and the current average flows, the Town feels that permitting discharge of the
Buckeye Lake WTP decant water at the Grassy Gap WWTP would put a hindrance on the Town
by taking away flow allocation designated for future growth and development in the Town of
Beech Mountain.
Due to the burden accepting this additional flow would cause the Town, we feel this is not a
feasible option for disposal of the Buckeye Lake WTP decant water. If you have any questions,
please give me a call.
Sincerely.
Seth Lawless
Town Manager
Eastern America's Highest Town
NPDES PERMIT APPLICATION - SHORT FORM C-WTP
For discharges associated with conventional water treatment plants JAN 10 2005
N. C. Department of Environment and Natural Resources
Division of Water Quality / NPDES Unit
1617 Mail Service Center, Raleigh, NC 27699-3,617
NPDES Permit Number NC00
Please print or type
1. Contact Information:
Facility Name
Owner Name
Street Address
City
State / Zip Code
Telephone Number
Fax Number
e-mail Address
Operator Name
Street Address
City
State / Zip Code
Telephone Number
Buckeye Lake WTP
Town of Beech Mountain
Beech Mountain
NC, 28604
( 828) 387-4236
( 828) 387-4862
beechmtntown@skybest.com
Gary :McKinney_
208 ...Grassy": Gap Ckeek:_.R6ad
RPQcI� Mount in
NC 28604
(828 ) 387-9368
2. Location of facility producing discharge:
Facility Name (If different from above)
Street Address or State Road
City / Zip Code
County
3.
4.
Standard Industrial Classification (SIC) Codes:.
Principal process(es):
4941
High Rate Water Filtration Water Treatment Plant
5, Ownership Status:
Federal 0 State F-1 Private 0 Public
6. Check here if discharge is continuous
If not continuous,
Frequency of discharge during the day:
Frequency of discharge during the month (week): Backwash volume ^ 20, 000 gpd
Discharged Intermittently at 100 gpm
1
7. Number of separate discharge points:
8. Description of source water(s) (i.e. groundwater or surface water)
Surface water, Buckeye Lake
Page 1 of 2 Version -08103
NPDES PERNaT APPLICATION - SHORT FORM C WTP
For discharges associated with conventional water treatment plants
9. Name of receiving stream(s) (Provide of map of exact location of each ou fall, including latitude and
lorigitudes Buckeye Creek N 36.20 W 81.90
10. List all permits, construction approvals and/or applications (check aIi that apply and provide
permit numbers or check none if not applicable):
!me
Permit Number
®
None
CI
UIC
0
NPDES
0
PSD
0 NESHAPS
2yp—e Permit Number
Non -Attainment
Ocean Dumping
=Dredge/Fill Permits
0 RCRA
Other
11. Is this facility located on Native American lands? (check one)
YES 0
NO RO
12. Please list all water treatment additives, including cleaning chemicals, that have the
potential to be discharged.
Chlorine gas Ammonia during summer months
Polymer
Soda ash for pH -
Polyphosphate for corrosion control
13. For NEW water treatment plants, please submit all analyses of source water collected.
N/A
I certify that I am familiar with the information contained in the application and that to the best
of my knowledge and belief such information is true, complete, and accurate.
Rt G K 0 W M A ya r-
Printed name of Person Signing Title
M1
Date
North Carolina General Statute 143-215.6 (b)(2) provides that: Any person who knowingly makes any false statement representation, or
certification in any application, record, report, plan, or other document files or required to be maintained under Article 21 or regulations of the
Environmental Management Commission implementing that Article, or who falsifies, tampers with, or knowingly renders inaccurate any
recording or monitoring device or method required to be operated or maintained under Article 21 or regulations of the Environmental
Management Commission implementing that Article, shall be guilty of a misdemeanor punishable by a fine not to exceed $10,000. or by
imprisonment not to exceed six months, or by both. (18 U.S.C. Section 1001 provides a punishment by a fine of not more than $10,000 or
imprisonment not more than 5 years, or both, for a similar offense.)
Page 2 of 2 Version -08103
Prepared by:
DAVIS-MARTIN-POWELL & ASSOCIATES, INC.
ENGINEERING s LAND PLANNING • SURVEYING
6415 Old Plank Road
High Point, North Carolina 27265
Phone (336) 886-4821 - Fax (336) 886-4458
Apr# 2005
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Town of Beech Mountain WTP — Engineering Alternatives Analysis
1. INTRODUCTION
The purpose of this Engineering Alternatives Analysis Report (EAA) is to evaluate
disposal options for the Town of Beech Mountain Buckeye Lake Water Treat Plant
decant backwash water, ultimately arriving at a recommended disposal alternative for
the Town of Beech Mountain. The EAA will include the following information:
• General application information
• Reasonable flow projections
• Evaluation of technologically feasible alternatives
• Evaluation of the economic feasibility of reasonable alternatives
This report summarizes site -specific options including connecting to an existing
municipal wastewater system, constructing an on -site surface or subsurface system,
developing a water reuse system, and having a direct discharge to surface waters.
2. GENERAL INFORMATION
• The proposed project will divert the existing water treatment plant alum sludge
lagoon decant pump station from recycling decant water to the head of the
water treatment plant to a new proposed surface water discharge along Buckeye
Creek.
• Aoolicant Information
o Town of Beech Mountain
0 403 Beech Mountain Parkway, Beech Mountain, NC 28604
o (828) 387-4236
o Mr. Seth Lawless
• Facility Information
o Buckeye Lake Water Treatment Plant
0 208 Grassy Gap Creek Road, Beech Mountain, NC 28604
o Watauga County
o (828) 387-9368
o Gary McKinney
• EAA Preparer's Name
o Davis -Martin -Powell & Associates
0 6415 Old Plank Road, High Point, NC 27265
o (336) 886-4821
o Mr. Ed Powell, PE
PAPR0JECT\BeechMtn1E3695 - WTP NPDES1Beech WTP EAA REVISED 041505.doc 1
Town of Beech Mountain WTP — Engineering Alternatives Analysis
3. BACKGROUND INFORMATION
The Town of Beech Mountain's Buckeye Lake Water Treatment Plant is located in
Watauga County along Grassy Gap Creek Road near Buckeye Creek, which is
classified as Class C Trout waters in the Watauga River Basin. The existing water
treatment plant, which serves the residents of the Town of Beech Mountain and
surrounding area, is a high rate water filtration treatment plant. Currently the backwash
water from the plant is decanted in two alum sludge storage basins, which is
subsequently pumped back to the head of the plant and mixed with raw water for
treatment. With changes in regulations becoming increasingly more stringent, the
practice of circulating backwash water to the head of the plant is no longer looked
favorably upon as a viable option and the NCDENR Public Water Supply Section has
requested the Town pursue another option for disposal.
The Town of Beech Mountain's Buckeye Lake Water Treatment Plant does not currently
operate under an NPDES permit. However, since pumping the backwash water back to
the head of the plant is no longer a technically feasible option, an NPDES permit may
be necessary in order to discharge the filter backwash into Buckeye Creek.
4. EXISTING SYSTEM
The Buckeye Lake Water Treatment Plant is a 1.0 MGD high rate water filtration plant,
utilizing Neptune MicroFloc package treatment components and consisting of the
following treatment processes:
❑ Two 750 GPM Raw Water Pumps
❑ Two sedimentation basins with tube settlers and 40 minute detention time
❑ Two high rate multi -media filters
❑ 300,000 gallon finished water clearwell
❑ Two 750 GPM high service pumps
❑ Liquid chemical feed systems for alum, caustic, and corrosion inhibitor
❑ Gas chlorination and ammonia feed systems
The WTP treats water from Buckeye Lake, a manmade impoundment with a storage
volume of approximately 50 million gallons. Process wastewater generated by the WTP
includes the alum sludge collected in the sedimentation basin, which is periodically sent to
the sludge holding basins, by emptying the sedimentation basins. Filter backwash water
PAPROJECT1BeechMtn\E3695 - WTP NPDES1Beech WTP EAA REVISED 041505.doc 2
Town of Beech Mountain WTP - Engineering Alternatives Analysis
also flows to the sludge holding basins, at a maximum rate of 1300 gpm. On average,
each filter is backwashed once every three days. Total volume of wastewater from the
sedimentation basins and filter backwash averages approximately 20,000 GPD. Alum
sludge is allowed to settle in the sludge holding basins, and the solids are periodically
removed and disposed of offsite. Decant from the holding basins flows to the decant
pump station where it is currently pumped back to the head of the treatment plant.
Pumping back to the head of the plant occurs intermittently, as needed, at a design rate of
100 gpm.
As mentioned previously, the current method of pumping the decant water back to the
head of the plant is no longer a viable option. Therefore a new method of discharge and
disposal for the decant water needs to be established.
5. ALTERNATIVE IMPROVEMENT ANALYSIS
Non -Discharge Sub -surface System
Conventional or low-pressure sub -surface disposal would eliminate the circulating of
decant water to the head of the plant and provide a disposal option other than
discharging decant water to surface waters. However, several factors must be satisfied
to make these options feasible. Suitable soil must be available with a minimum depth of
30 inches and an acceptable texture and permeability. Based on the suitability of the
on -site soil, a hydraulic loading rate of between 0.2 and 1.2 gallons per day per square
foot would need to be determined by a soil scientist. Using the established soil loading
rate and the average daily flow, the size of the distribution field can be determined. A
reserve area equal to 100% of the design area is also required. Both areas must have
suitable topographic features. Slopes should be no greater than 10 percent and all
drainage must be diverted away from the disposal area. There are many restrictions
such as setback distances from property lines and structures that limit the location of
the disposal field as well. Extensive on -site soil surveys must be conducted with this
option to determine if suitable soils and land is available. Based on soil loading rates
and topographic features, a selection to use either a conventional septic tank
nitrification system or low-pressure pipe system would be made.
Land used for and reserved for low-pressure or conventional nitrification disposal
systems must be protected from heavy equipment and/or extensive activity that would
threaten the survival of established vegetation or compact the soils in any way. Sub-
PAPR0JECT113eechMtn\E3695 - WTP NPDES\Beech WTP EAA REVISED 041505.doc 3
Town of Beech Mountain WTP - Engineering Alternatives Analysis
surface systems of this size also have requirements for ongoing groundwater
monitoring. In addition operational and maintenance considerations must be made with
the septic tanks and distribution system pumps associated with an on -site disposal
system.
Assuming an LTAR of 0.40 gpd/sq ft and an average flow of 20,000 gpd calculations
show that a pressure manifold subsurface system would require over 7 acres of land for
the active drainfield area along with an additional 7 acres for repair area. Assuming this
amount of land was available, experience has shown that a system of this size could
potentially exceed $1,000,000. A brief calculation of acreage required has been
included with this EAA.
Due to the above factors as well as the costs associated with an on -site system, this
alternative is not a technically or economically feasible option and will not be
considered further.
Non -Discharge Spray Irrigation
Spray irrigation systems also would eliminate the circulating of decant water to the head
of the plant and provide a disposal option other than discharging decant water to
surface waters. As required by sub -surface disposal, spray irrigation systems are
dependent upon existing soil conditions. Soil conditions must be analyzed for texture
and permeability to a depth of seven feet. Based upon the slopes of the existing
ground (not to exceed 10%) and the suitability of the existing soils, a maximum weekly
and yearly application, rate can be determined. After determining the weekly and yearly
application rates, the area required for spray irrigation can be determined. A fence to
protect it from heavy traffic and to insure that adequate groundcover is maintained must
surround the entire application area. A spray irrigation system will also require a 5-day
storage volume, because effluent cannot be applied during wet weather. In addition,
there are many restrictions such as setback distances from property lines and
structures that limit the location of a spray disposal field. No activity is permitted in the
areas designated for application of wastewater and these areas are deemed off limits for
general use. In addition to an on -site soil survey to determine the suitability of the soil
for a spray irrigation disposal system, ground water monitoring wells may be required.
As with the subsurface option, assuming adequate land is available for a spray irrigation
system, experience has shown that a system this size could exceed $1,000,000. Due to
P:\PROJECT\BeechMtn\E3685 - WTP NPDES1Beech WTP EAA REVISED 041505.doc 4
Town of Beech Mountain WTP - Engineering Alternatives Analysis
the above restrictions and potential costs a spray irrigation disposal system is not
feasible for this site and will not be considered further.
Wastewater Reuse System
As with the spray irrigation system and the subsurface disposal system, the water reuse
system has several technological and economical disadvantages. Additional site piping
along with a reuse pump station and would need to be constructed for a water reuse
system. Also, sufficient storage would be required, to allow for times when effluent
cannot be applied during inclement weather. Related costs such as engineering, land
purchasing and contingencies would further increase the capital cost. Due to these
factors as well as the costs associated with an on -site system reuse system, this
alternative is not a technically or economically feasible option and will not be
considered further.
Transfer to Public Sewer System
Connecting to a municipal sewer system would provide the opportunity to eliminate
recycling the decant water to the head of the plant and would also eliminate the need for a
surface water discharge. While the proximity of the Buckeye Lake Water Treatment Plant
to the Grassy Gap Wastewater Treatment Plant provides an excellent opportunity to
discharge directly to the wastewater treatment facility, there are also several disadvantages
to this option. The biggest disadvantage to transferring the decant wastewater to the
Grassy Gap WWTP would be that the Town would lose this amount of flow from the
current flow allocation currently designated for future growth and development in the Town
of Beech Mountain. In addition, the chemical treatment process used at the Buckeye Lake
Water Treatment Plant may have an impact on the treatment capabilities at the Grassy Gap
WWTP. This could lead to changes in the treatment process at the Grassy Gap WWTP or
additional monitoring requirements for the Grassy Gap NPDES permit. Due to these
factors as well as the costs associated with transferring to the Grassy Gap WWTP, this
alternative is not a technically or economically feasible option and will not be considered
further. A letter from the Town of Beech Mountain, stating the above burden with respect
to flow allocation has been included with this EAA.
PAPROJECT\BeechMtn\E3695 - WTP NPDESIBeech WTP EAA REVISED 041505.doc 5
Town of Beech Mountain WTP - Engineering Alternatives Analysis
Surface Water Discharge
A surface water discharge would provide the opportunity to eliminate recycling the decant
water to the head of the plant and would also provide the most technologically and
economically feasible option. The proximity of the Buckeye Lake Water Treatment Plant to
Buckeye Creek, classified Class C, Trout Water in the Watauga River Basin, allows for a
short distance from the existing decant pump station to the creek. In addition, this option
would allow the Town of Beech Mountain to utilize existing on -site piping to redirect the
flow from the head of the plant to a discharge point along Buckeye Creek. Also, due to the
topography at the location of the water treatment plant the existing pumps would be able
to be utilized with the new discharge option, eliminating the capital cost of purchasing new
pumps or building a new pump station. In addition, since the maintenance staff at the
Buckeye Lake WTP currently operates and maintains the existing decant pump station
there would also be no additional operational cost with this option.
With the exception of purchasing and implementing a de -chlorination system to the new
discharge there would be very minimal capital costs associated with this option.
Compared with the extreme costs associated with the subsurface option or spray irrigation
option, the surface water discharge option is by far the most economically feasible option.
6. RECOMMENDED ALTERNATIVE
Based on the information presented above, it is recommended that the Surface Water
Discharge option is implemented to provide an alternative to recycling the decant water
to the head of the water treatment plant. This option provides the most technologically
feasible option and with the exception of the de -chlorination system for the new
discharge there would be very minimal capital costs or operation and maintenance
costs associated with this option.
P:\PROJECT\BeechMtn1E3695 - WTP NPDES\Beech WTP EAA REVISED 041505.doc 6
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DAVIS—MARTIN—POWELL & ASSOCIATES, INC. TOWN OF BEECH MOUNTAIN, NORTH CAROLINA
ENGINEERING - L4ND PLANNING - SURVEYING BUCKEYE LAKE WATER TREATMENT PLANT '
61.15 COLD FILA14.1. ROAD PROPOSED NPDES DISCHARGE LOCATION
HIGH POINT. NORTH AROLINA 27263 SCALE: 1" = 3000 FT
+ (336) 836-L32I FAY. (336) B36-LI-53 USGS QUADS: ELK PARK & VALLE CRUCIS
Town of Beech Mountain
BUCKEYE LAKE WTP
WATAUGA COUNTY, NORTH CAROLINA
DECANT WATER DISPOSAL POTENTIAL NON -DISCHARGE WASTEWATER SYSTEM SIZING
SUBSURFACE CONVENTIONAL SYSTEM WITH PRESSURE MANIFOLD
Assume: Gallons/Day 20,000
Assume: LTAR gpd/ft ^ 2
Disposal Area, sq. feet
Trench width, feet
Trench length, feet
Assume: Avg Trench Spacing
Minimum Area Needed, sq ft
Minimum Drainfield Area Needed, acres
Land Area Safety Factor
Potential Active Drainfield Area Needed, acres
Repair Area Needed (100% of Active Area), acres
Total Area Needed, acres
0.40
50,000
(required trench area)
3
16,667
(Would require approx. 85 laterals
@ 200 LF/each, or variation)
15
(minimum spacing is 9 ft)
250,000
5.74
1.25
7.17
7.17
14.35
DAVIS-MARTIN-POWELL ASSOCIATES Non -Discharge Estimate.xls - SUBSURFACE WWTF E-3623 4/15/2005
A&
TOWN OF
BCCC12
MOUNTAIN
Seth Lawless, Manager
David R. Paletta, Attorney
April 15, 2005
Town or
13B02 Mouritafri
403 Beech Mountain Parkway
Beech Mountain, North Carolina 28604-8012
Phone: 828/387-4236
Fax: 828/387-4862
E-mail: beechmtntown@skybest,com
Re: Town of Beech Mountain Buckeye Lake WTP
NPDES Permit Application, DMP Project E-3695
Mr. Michael Goliber, PE
Project Engineer
Davis -Martin -Powell & Associates
6415 Old Plank Road
High Point, NC 27265
Mayor
Rick Owen
Vice Mayor
GII Adams
Council Members
Paul Planet
Peter K. Chamberlin
Edward J. Waligroskl
AP R 1 8 2005
Dear Michael:
The Town of Beech Mountain understands that one alternative identified for a proposed
discharged option for the Town's Buckeye Lake Water Treatment Plant decant water is to
discharge to the Grassy Gap WWTP.
The Grassy Gap WWTP has a permitted capacity of 0.08 MGD and the average flow at this plant
is approximately 0.05 MGD, based on monthly discharge monitoring reports. Due to the size of
our WWTP and the current average flows, the Town feels that permitting discharge of the
Buckeye Lake WTP decant water at the Grassy Gap WWTP would put a hindrance on the Town
by taking away .flow allocation designated for future growth and development in the Town of
Beech Mountain.
Due to the burden accepting this additional flow would cause the Town, we feel this is not a
feasible option for disposal of the Buckeye Lake WTP decant water. If you have any questions,
please give me a call.
Sincerely,
Seth Lawless
Town Manager
Eastem America's Highest Town