HomeMy WebLinkAboutWQ0000798_Final Permit_20051121�p W A r, R Michael F. Easley, Governor
0 G William G. Ross Jr., Secretary
rNorth Carolina Department of Environment and Natural Resources
p Alan W. Klimek, P.E. Director
November 21, 2005
GERALD L. LONG, MAYOR
TOWN OF SHALLOTTE
PO Box 2287
SHALLOTTE, NORTH CAROLINA 28459
Dear Honorable Mayor Long:
Division of Water Quality
Subject: Permit No. WQ0000798
Town of Shallotte WWTP
Wastewater Treatment and
Surface Irrigation
Brunswick County
In accordance with your modification request received February 4, 2005, we are forwarding
herewith Permit No. WQ0000798, dated November 21, 2005, to the Town of Shallotte for the continued
operation of the subject wastewater treatment and surface irrigation facilities.
This permit approves the request to plant longleaf pines instead of hardwoods on fields 6, 7, 8,
10, 11, 12, and 13. Conditional approval was granted by letter dated March 14, 2005 from Tim Bushardt,
Y.E. of the Wilmington Regional Office to begin planting of the longleaf pines due to time constraints for
purchasing and planting. Please pay particular attention to Condition 11. 1, Condition H.2, and Condition
11.3. The Division of Water Quality (Division) still has serious concerns about the lack of operational
flexibility and efficiency that is currently incorporated into the design of the facilities. Therefore, the
Division urges the Permittee to look critically at the operation of the wastewater treatment and spray
irrigation facilities and consider a permit modification to upgrade the pumping capabilities of the
irrigation system. The Permittee is also urged to consider additional irrigation capacity to reduce the
number of consecutive hours that must be accommodated by the Permittee's staff in order to operate and
maintain the facilities properly.
This permit shall be effective from the date of issuance until October 31, 2010, shall void Permit
No. WQ0000798 issued August 6, 2001, and shall be subject to the conditions and limitations as specified
therein. Please pay particular attention to the monitoring requirements in this permit. Failure to establish
an adequate system for collecting and maintaining the required operational information will result in
future compliance problems.
If any parts, requirements, or limitations contained in this permit are unacceptable, you have the
right to request an adjudicatory hearing upon written request within thirty (30) days following receipt of
this permit. This request must be in the form of a written petition, conforming to Chapter 150E of the
North Carolina General Statutes, and filed with the Office of Administrative Hearings, 6714 Mail Service
Center, Raleigh, NC 27699-6714. Unless such demands are made this permit shall be final and binding.
ft
Mr Carolina
Aaturally
Aquifer Protection Section 1636 Mail Service Center Raleigh, NC 27699-1636 Phone (919) 733-3221 Customer Service
Internet: h2o.enr.statc,nc.us 2728 Capital Boulevard Raleigh, NC 27604 FAX (919) 715-6048 1-877-623-6748
An Equal Opportunity/Affirmative Action Employer — 50% Recycled/iO% Post Consumer Paper
One set of approved plans and specifications is being forwarded to you. if you need additional
information concerning this matter, please contact Toni Wyche at (919) 715-6188
%Since/re, e //
Alan W. Klimek, P.E.
cc: Brunswick County Health Department
Wilmington Regional Office, Aquifer Protection Section
David B. Bowman, PE of East Coast Engineering
Technical Assistance and Certification Unit
APS Central Files
LAU Files
2
NORTH CAROLINA
ENVIRONMENTAL MANAGEMENT COMMISSION
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
RALEIGH
SURFACE IRRIGATION SYSTEM PERMIT
In accordance with the provisions of Article 21 of Chapter 143, General Statutes of North Carolina as
amended, and other applicable Laws, Rules, and Regulations
PERMISSION IS HEREBY GRANTED TO
Town of Shallotte
Bnlnswick County
FOR THE
continued operation of a 500,000 gallon per day wastewater treatment and spray irrigation facilities. The
facilities are divided into two separate and distinct treatment and disposal process trains paths that shall be
known by the identifiers WQ0000798-A (i.e., the "Original" system) and WQ0000798-B (i.e., the "Phase
I" Expansion" systems), respectively, for the purpose of permit compliance.
The WQ0000798-A wastewater treatment and spray irrigation facilities shall treat and dispose of a
maximum of 175,000 gallons per day of wastewater and shall consist of the following minimum
components: an ultrasonic -type flow metering device to measure all wastewater that is influent to the
facilities; two stair step -type cascade influent paths to dual, 2.75 -acre facultative lagoons with a natural
clay liner and reserve storage capacity; dual manually -cleaned coarse screens; a manually -cleaned fine -
mesh screen for wastewater effluent screening; chlorination facilities; a mechanical float -type flow
metering device to measure all wastewater effluent; an irrigation pump station with two, 400 -gallon per
minute pumps; a solid -set spray irrigation field that has approximately 40.8 acres of wetted area (i.e.,
including 14.8 acres currently being irrigated from the WQ0000798-A facilities as well as 26.0 acres
currently being irrigated from the WQ0000798-B facilities that shall be modified such that they will be
irrigated from the WQ0000798-A facilities; and all associated piping, valves, electrical and
instrumental/control systems, and other appurtenances necessary to make a complete and functional
wastewater treatment and spray irrigation operation.
The WQ0000798-B wastewater treatment and spray irrigation facilities shall treat and dispose of a
maximum of 325,000 gallons per day of wastewater and shall consist of the following minimum
components: approximately 7,400 linear feet of eight -inch force main to convey influent wastewater to
the facilities; an ultrasonic -type flow metering device to measure all wastewater that is influent to the
facilities; an influent bar screen; an 11.6 -acre treatment and storage lagoon with a 40 -mil high-density
polyethylene (HDPE) liner; a trash screen for wastewater effluent screening; a gaseous chlorine feed
system and chlorine contact basin for wastewater effluent disinfection; an irrigation pump station with
two, 820 -gallon per minute vertical turbine pumps and in-line strainers; an ultrasonic -type flow metering
device to measure all wastewater effluent; a solid -set spray irrigation field that has approximately 93.4
acres of wetted area (i.e., including 39.0 acres that are currently being irrigated from the WQ0000798-B
facilities as well as 54.4 acres that are new); and all associated piping, valves, electrical and
instrumental/control systems, and other appurtenances necessary to make a complete and functional
wastewater treatment and spray irrigation operation.
The above-described existing and new wastewater treatment and spray irrigation facilities are intended to
serve the Town of Shallotte and its wastewater customers with no discharge of wastes to surface waters,
pursuant to the permit modification application package received on February 4, 2005, and subsequent
additional information received by the Division, and in conformity with the project plan, specifications,
and other supporting data subsequently filed and approved by the Department of Environment and
Natural Resources and considered a part of this permit.
This permit shall be effective from the date of issuance until October 31, 2010, shall void Permit
No. WQ0000798 issued August 6, 2001, and shall be subject to the following specified conditions and
limitations:
I. PERFORMANCE STANDARDS
Upon completion of construction and prior to operation of this permitted facility, a certification must
be received from a professional engineer certifying that the permitted facility has been installed in
accordance with this permit, the approved plans and specifications, and other supporting materials. If
this project is to be completed in phases and partialI certified, you shad retain the responsibility to
track further construction approved under the same permit, and shall provide a final certificate of
completion once the entire project has been completed. Mail the Certification to the Land
Application Unit, Division of Water Quality, 1636 Mail Service Center, Raleigh, NC 27699-1636.
2. The Wilmington Regional Office, telephone number (910) 796-7215, shall be notified at least forty-
eight (48) hours in advance of operation of the installed facilities so that an in-place inspection can be
made. Such notification to the regional supervisor shall be made during the normal office hours from
8:00 a.m. until 5:00 p.m. on Monday through Friday, excluding State Holidays.
The surface irrigation facilities shall be effectively maintained and operated at all times so that there
is no discharge to the surface waters, nor any contamination of ground waters, which will render them
unsatisfactory for normal use. In the event that the facilities fail to perform satisfactorily, including
the creation of nuisance conditions or failure of the irrigation area to adequately assimilate the
wastewater, the Permittee shall take immediate corrective actions including those actions that may be
required by the Division of Water Quality, such as the construction of additional or replacement
wastewater treatment and disposal facilities.
4. The issuance of this permit shall not relieve the Permittee of the responsibility for damages to surface
or groundwaters resulting from the operation of this facility.
5. The residuals generated from these treatment facilities must be disposed in accordance with General
Statute 143-215.1 and in a manner approved by the Division.
6. Diversion or bypassing of the untreated wastewater from the treatment facilities is prohibited.
7. The following buffers shall be maintained:
a) 400 feet between wetted area and any residence or places of public assembly under separate
ownership,
b) 150 feet between wetted area and property lines,
c) 100 feet between wetted area and wells,
d) 100 feet between wetted area and drainage ways or surface water bodies,
e) 50 feet between wetted area and public right of ways,
f) 100 feet between treatment/storage units and any wells, and
g) 50 feet between treatment units and property lines.
II. OPERATION AND MAINTENANCE REOUIREMENTS
1. Within ninety (90) days of permit issuance, the Permittee shall submit a map detailing the longleaf
pine planting layout. All trees shall be planted with a ten (10) foot radius setback from all spray
risers.
2. Within ninety (90) days of permit issuance, the Permittee shall submit a map depicting all stream
monitoring points (see Condition 111.5).
A suitable year round vegetative cover shall be maintained in accordance with the Nutrient
Management Plan (Attachment A). Once established, the vegetative cover on the wetted area of the
new, modified, and existing spray irrigation facilities shall be observed and maintained as follows:
a. Harvest and reestablish the tree cover crop in accordance with the "Tree Harvest Operational
Plan" that was prepared by East Coast Engineering Company, P.A. (i.e., see Attachment A).
b. Inspect the grass cover crop once per week and maintain as necessary to harvest prior to reaching
a 12 -inch height. The understory grasses shall be removed by bailing and harvesting. Harvested
grass shall be removed from the wetted area;
c. Evaluate the grass cover crop in September and March for survival and cover percentage and, if
necessary, rake all bare areas to the surface layer and reseed;
d. Evaluate the tree cover crop annually and prune as necessary to ensure proper distribution of the
irrigated wastewater effluent (i.e., tree prunings shall be removed from the wetted area); and
e. Have the tree cover crop evaluated by a arborist or agronomist once per permit cycle to determine
overall vegetative cover health and to make recommendations as to those mature, dominant
stands that should be whole -tree harvested and removed from the area.
4. The facilities shall be properly maintained and operated at all times.
5. Upon classification of the wastewater treatment and irrigation facilities by the Water Pollution
Control System Operators Certification Commission (WPCSOCC), the Permittee shall designate and
employ a certified operator to be in responsible charge (ORC) and one or more certified operator(s) to
be back-up ORC(s) of the facilities in accordance with 15A NCAC 8G .0201. The ORC shall visit
the facilities in accordance with 15A NCAC 8G .0204 or as specified in this permit and shall comply
with all other conditions specified in these rules.
d. Irrigation shall not be performed during inclement weather or when the ground is in a condition that
will cause runoff.
7. Adequate measures shall be taken to prevent wastewater runoff from the irrigation field.
8. The facilities shall be effectively maintained and operated as a non -discharge system to prevent the
discharge of any wastewater resulting from the operation of this facility.
9. The application rate shall not exceed the following:
Field No.'
Facilities No.
Wetted
Area
acres a
Cumulative
Application Rate
(inches er ear
Vegetative
Cover Crop
IA
W 0000798-A
6.50
44.20
Hardwood Plantation
1B
WQ0000798-A
6.50
44.20
Hardwood Plantation
2A
WQ0000798-A
6.50
44.20
Hardwood Plantation
2B
WQ0000798-A
6.50
44.20
Hardwood Plantation
3
W 0000798-B
13.00
44.20
Hardwood Plantation
4
WQ0000798-B
13.00
44.20
Hardwood Plantation
5
WQ0000798-B
13.00
44.20
Hardwood Plantation
6`
WQ0000798-B
12.16
53.04
Longleaf Pines
7`
WQ0000798-B
12.28
39.52
Longleaf Pines
8`
WQ0000798-B
23.36
52.00
Longleaf Pines
9
WQ0000798-A
2.00
100.36
Coastal Bermuda/Rye
10
WQ0000798-A
5.10
78.00
Longleaf Pines
11
WQ0000798-A
4.70
78.00
Longleaf Pines
12
WQ0000798-A
3.00
78.00
Longleaf Pines
13`
WQ0000798-B
6.60
46.80
Longleaf Pines
Sub -Total
W 000798-A
40.80
511.16
n/a
Sub -Total
W 000798-B
93.40
323.96
n/a
Total
n/a
134.2
835.12
n1a
a Each field shall be closely monitored during any spray irrigation event. Should the applied
wastewater effluent be observed to accumulate on the ground surface, the application rates
shall be reduced or irrigation shall be ceased accordingly.
b The cumulative application rate shall be equivalent to the Ioading of wastewater effluent over
any 12 -month period.
` Irrigation on these fields shall be performed for maximum period of one hour and shall be
followed by a minimum rest period of three hours prior to initiating another spray irrigation
event.
d A suitable year-round grass cover crop shall be established and maintained in between the
rows of the trees in those fields containing a hardwood plantation.
10. No type of wastewater other than that from the Town of Shallotte Wastewater Treatment Plant shall
be irrigated onto the irrigation area.
11. No traffic or equipment shall be allowed on the disposal area except while installation occurs or while
normal maintenance is being performed.
12. Public access to the land application sites shall be controlled during active site use. Such controls
may include the posting of signs showing the activities being conducted at each site.
13. Freeboard in the facultative lagoons shall not be less than two feet at any time.
14. A protective vegetative cover shall be established and maintained on all earthen basin embankments
(outside toe of embankment to maximum pumping elevation), berms, pipe runs, erosion control areas,
and surface water diversions. Trees, shrubs, and other woody vegetation shall not be allowed to grow
on the earthen basin dikes or embankments. Earthen basin embankment areas shall be kept mowed or
otherwise controlled and accessible.
4
III. MONITORING AND REPORTING REQUIREMENTS
1. Any monitoring (including groundwater, surface water, soil or plant tissue analyses) deemed
necessary by the Division to insure surface and ground water protection will be established and an
acceptable sampling reporting schedule shall be followed.
2. Influent flow shall be continuously monitored and daily flow values shall be reported on Form
NDMR.
The Permittee shall install an appropriate flow measurement device consistent with approved
engineering and scientific practices to ensure the accuracy and reliability of influent flow
measurement. Flow measurement devices selected shall be capable of measuring flows with a
maximum deviation of less than 10 percent from true flow, accurately calibrated at a minimum of
once per year, and maintained to ensure that the accuracy of the measurements is consistent with the
accepted capability of that type of device. The Permittee shall keep records of flow measurement
device calibration on file for a period of at Ieast three years. At a minimum, data to be included in
this documentation shall be:
a. Date of flow measurement device calibration
b. Name of person performing calibration
c. Percent from true flow
3. The effluent from the subject facilities shall be monitored by the Permittee at the point following all
wastewater treatment processes and prior to irrigation every month for the following parameters:
NH3 as N NO2-NO3
BODS TKN -
TSS Fecal Coliform
PAN calculation
4. The effluent from the subject facilities shall be monitored by the Permittee at the point following all
wastewater treatment processes and prior to irrigation every day for the following parameters:
Effluent flow I Total Residual Chlorine
5. The surface water from upstream and downstream monitoring points for the wastewater treatment and
spray irrigation facilities shall be monitored by the Permittee every month for the following
parameters:
Fecal Coliform Total Nitrogen
PH
The upstream surface water monitoring points for the WQ0000798-A facilities and the WQ0000798-
B facilities shall be located at accessible points on Stinking Well Branch (Woodward Branch) and
Charles Branch and at the intersection of Mulberry Branch and Forest Drive Extension, respectively.
The downstream surface water monitoring points for the WQ0000798-A facilities and the
WQ0000798-B facilities shall be located immediately below the confluence of Stinking Well Branch
(Woodward Branch) and Charles Branch and at the intersection of Mulberry Branch and North
Carolina State Road 1348, respectively.
6. The Permittee tracking the amount of wastewater disposed shall maintain adequate records. These
records shall include, but are not necessarily limited to, the following information:
a. Date of irrigation,
b. Volume of wastewater irrigated,
c. Field irrigated,
d. Length of time field is irrigated,
e. Continuous weekly, monthly, and year-to-date hydraulic (inches/acre) loadings for each field,
f. Weather conditions, and
g. Maintenance of cover crops.
7. Freeboard in the facultative lagoons shall be recorded weekly.
8. Three (3) copies of all monitoring data [as specified in Conditions 111(2), 111(3), 111(4), and IU(5)] on
Form NDMR-1 and three (3) copies of all operation and disposal records [as specified in Conditions
111(6) and 111(7)] on Form NDAR-1 shall be submitted on or before the last day of the following
month. All information shall be submitted to the following address:
Division of Water Quality
Information Processing Unit
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
9. An annual representative soils analysis (Standard Soil Fertility Analysis) shall be conducted on each
irrigation field and the results maintained on file by the Permittee for a minimum of five years. The
Standard Soil Fertility Analysis shall include, but is not necessarily limited to, the following
parameters:
Acidity
Manganese Potassium
Calcium
Percent Humic Matter Sodium
Co er
pH Zinc
Magnesium
Base Saturation (by calculation) Phosphorus
Cation Exchange Capacity
Exchangeable Sodium Percenta e
10. Noncompliance Notification:
The Permittee shall report by telephone to the Wilmington Regional Office, telephone number (910)
796-7215, as soon as possible, but in no case more than 24 hours or on the next working day
following the occurrence or first knowledge of the occurrence of any of the following:
a. Any occurrence at the wastewater treatment facility which results in the treatment of significant
amounts of wastes which are abnormal in quantity or characteristic, such as the dumping of the
contents of a sludge digester; the known passage of a slug of hazardous substance through the
facility; or any other unusual circumstances.
b. Any process unit failure, due to known or unknown reasons, that render the facility incapable of
adequate wastewater treatment such as mechanical or electrical failures of pumps, aerators,
compressors, etc.
c. Any failure of a pumping station, sewer line, or treatment facility resulting in a by-pass directly to
receiving waters without treatment of all or any portion of the influent to such station or facility.
d. Any time that self-monitoring information indicates that the facility has gone out of compliance
with its permit limitations.
Occurrences outside normal business hours may also be reported to the Division's Emergency
Response personnel at telephone number (800) 662-7956, (800) 858-0368, or (919) 733-3300.
Persons reporting such occurrences by telephone shall also file a written report in letter form within
five (5) days following first knowledge of the occurrence. This report must outline the actions taken
or proposed to be taken to ensure that the problem does not recur.
IV. GROUNDWATER REOUMEMENTS
1. The nine existing groundwater monitoring wells (i.e., MW -6, MW -7, MW -8, MW -9, MW -10, MW -
11, MW -12, MW -13, and MW -14) shall be sampled every March, July, and November for the
following parameters:
Chlorides Total Ammonia -Nitrogen (NH3-N)
Fecal Coliform Total Dissolved Solids (TDS)
Nitrate -Nitrogen (NO3-N) Total Organic Carbon (TOC)
PH Water Level
Volatile Organic Compounds (VOC), in November only, by one of the following methods:
(A) Standard Method 6230D, PQL at 0.5 gg/L or less
(B) Standard Method 621013, PQL at 0.5 gg/L or less
(C) EPA Method 8021, Low Concentration, PQL at 0.5 gg/L or less
(D) EPA Method 8260, Low Concentration, PQL at 0.5 µg/L or less
(E) Another method with prior approval by the Groundwater Section Chief
Any method used must meet the following qualifications:
(1) A laboratory must be DWQ certified to run any method used.
(2) The method used must, at a minimum, include all the constituents listed in Table VIII of
Standard Method 6230D.
(3) The method used must provide a PQL of 0.5 [tg/L or less that must be supported by
laboratory proficiency studies as required by the DWQ Laboratory Certification Unit.
Any constituents detected above the MDL but below the PQL of 0.5 µg/L must be
qualified (estimated) and reported.
The measurement of water levels must be made prior to sampling for the remaining parameters. The
depth to water in each well shall be measured from the surveyed point on the top of the casing.
If any volatile organic compounds are detected by the methods listed, then the Wilmington Regional
Office Aquifer Protection Supervisor, telephone number (910) 796-7215, must be contacted immediately
for further instructions regarding any additional follow-up analyses required. The results of all initial and
follow-up analyses must be submitted simultaneously.
The results of the sampling and analysis must be received on Form GW -59 (Groundwater Quality
Monitoring; Compliance Report Form) by the Division of Water Quality, Information Processing Unit,
1617 Mail Service Center, Raleigh, N.C. 27699-1617 on or before the last working day of the month
following the sampling month.
2. The COMPLIANCE BOUNDARY for the disposal system shall be as specified by regulations in 15A
NCAC 2L (i.e., "Groundwater Classifications and Standards"). The Compliance Boundary for a
disposal system individually permitted after December 31, 1983 shall be established at either (1) 250
feet from the waste disposal area or (2) 50 feet within the property boundary, whichever is closest to
the waste disposal area. An exceedance of groundwater quality standards at or beyond the
Compliance Boundary shall be subject to immediate remediation action in addition to the penalty
provisions applicable under North Carolina General Statute § 143-215.6A(a)(1).
3. In accordance with 15A NCAC 2L, a REVIEW BOLTNDARY shall be established around the
disposal system midway between the Compliance Boundary and the perimeter of the waste disposal
area. Any exceedance of groundwater quality standards at the Review Boundary shall require
remediation action on the part of the Permittee.
4. Any additional groundwater quality monitoring, as deemed necessary by the Division, shall be
provided.
V. INSPECTIONS
1. Adequate inspection, maintenance, and cleaning shall be provided by the Permittee to insure proper
operation of the subject facilities.
2. The Permittee or his designee shall inspect the wastewater treatment and disposal facilities to prevent
malfunctions and deterioration, operator errors and discharges which may cause or lead to the release
of wastes to the environment, a threat to human health, or a nuisance. The Permittee shall keep an
inspection log or summary including at least the date and time of inspection, observations made, and
any maintenance, repairs, or corrective actions taken by the Permittee. This log of inspections shall
be maintained by the Permittee for a period of three years from the date of the inspection and shall be
made available upon request to the Division or other permitting authority.
3. Any duly authorized officer, employee, or representative of the Division may, upon presentation of
credentials, enter and inspect any property, premises or place on or related to the disposal site or
facility at any reasonable time for the purpose of determining compliance with this permit; may
inspect or copy any records that must be maintained under the terms and conditions of this permit,
and may obtain samples of groundwater, surface water, or leachate.
VI. GENERAL CONDITIONS
1. This permit shall become voidable unless the facilities are constructed in accordance with the
conditions of this permit, the approved plans and specifications, and other supporting data.
2. This permit is effective only with respect to the nature and volume of wastes described in the
application and other supporting data.
3. This permit is not transferable. In the event there is a desire for the facilities to change ownership, or
there is a name change of the Permittee, a formal permit request must be submitted to the Division
accompanied by an application fee, documentation from the parties involved, and other supporting
materials as may be appropriate. The approval of this request will be considered on its merits and
may or may not be approved.
4. Failure to abide by the conditions and limitations contained in this permit may subject the Permittee
to an enforcement action by the Division in accordance with North Carolina General Statute 143-
215.6A to 143-215.6C.
5. The issuance of this permit does not exempt the Permittee from complying with any and all statutes,
rules, regulations, or ordinances which may be imposed by other government agencies (local, state,
and federal) which have jurisdiction, including but not limited to applicable river buffer rules in 15A
NCAC 2B .0200, erosion and sedimentation control requirements in 15A NCAC Chapter 4 and under
the Division's General Permit NCGO10000, and any requirements pertaining to wetlands under 15A
NCAC 2B .0200 and 2H.0500.
6. The Permittee shall retain a set of approved plans and specifications for the life of the project.
7. The Permittee must pay the annual administering and compliance fee within thirty (30) days after
being billed by the Division. Failure to pay the fee accordingly may cause the Division to initiate
action to revoke this permit as specified by 15A NCAC 2H .0205 (c)(4).
8. The Permittee, at least six (b) months prior to the expiration of this permit, shall request its extension
as well as a modification and schedule to expand the spray irrigation facilities. The purpose of this
expansion shall be to establish a "repair area" that can meet the hydraulic and nutrient demands that
will be created when certain spray irrigation fields are taken out of service for harvesting and
reestablishment of the tree cover crop. Upon receipt of the request, the Commission will review the
adequacy of the facilities described therein, and if warranted, will extend the permit for such period of
time and under such conditions and limitations as it may deem appropriate.
9. The subject wastewater treatment and disposal facilities shall be connected to an operational publicly
owned wastewater collection system within 180 days of its availability to the subject facilities, if the
subject wastewater treatment or disposal facilities are in noncompliance with the terms and conditions
of this non -discharge permit or the governing statutes or regulations. Prior to the initiation of these
connection activities, appropriate approval must be received from this Division.
Permit issued this;he 21" day of November, 2005
NORTH C/A(1tOLINA MWIRONMENTAL MANAGEMENT COMMISSION
lan W. Klimek, P.E., Director
Division of Water Quality
By Authority of the Environmental Management Commission
Permit Number WQ0000798
9
Permit No. WQ0000798
November 21, 2005
ENGINEER'S CERTIFICATION
Partial Final
I, , 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 project,
Project Name Location and County
for the Permittee hereby 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 and intent of this permit, the approved plans and specifications, and other supporting
materials.
Signature
Date
10
Registration No.
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NUTRIENT MANAGEMENT PLAN
For
Town of Shallotte, NC
Wastewater Treatment Plant Spray Field Expansion
. P.O. Box 2287
Shallotte, NC 28459
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A. General Information: --
.v
The Town of Shallotte, NC is modifying its wastewater spray application site. The
current cropping system is being modified and the spray site acreage is being expanded.
Approved changes voigbe implemented on the existing spray fields. Approved practices
will be conducted on the expanded spray field. An appropriately engineered solid set
irrigation system has been installed to ensure the even distribution of effluent across the
spray fields.
There are approximately 12 acres in the existing spray areas to be modified (fields # 10
and #11). There are approximately 59 acres in the expansion area (fields #6, #7, #S and
#13). Fields, tree planting pattern, and irrigation installation design are delineated on
East Coast Engineering Company, PA Tree Planting Plan for Town of Shallotte WWTP
map dated 11120/2003.
B. CROPS to be GROWN and their APPROPRIATE PLANTING DATES:
EXIXTING APPLICATION AREA (Fields #10 and #11) L rIr=:LD i�— 12.
The existing spray site is seeded in coastal Bermuda grass as the receiver crop for the
treated wastewater. The Bermuda grass is over seeded in the fall with cereal rye. During
the fall/winter 2004 Long Leaf Pine (Pinus Palustris) will be planted in to the existing
Bermuda grass sod. Longleaf pine grows well in damp as well as sandy soils. The pine
trees -will be planted on a 10' x 10' plantation regime resulting in approximately 450 trees
per acre. The Bermuda grass will be maintained.
EXPANDED APPLICATION AREA (Fields #6,97, 48, and #13)
The expanded spray area has been appropriately cleared and seeded in common Bermuda
grass. During the fall/winter 2004 this area will be planted with Long Leaf Pine ( Pinus
Palustris) on a 10' x 10' plantation regime resulting in approximately 450 trees per acre.
The Bermuda grass will be maintained.
Town of Shallotte Nutrient Management Plan
November 22, 2004
Page 1 of 5
CelW114ATUIV4
All Bermuda grass will be over seeded in the fall with cereal rye at the rate of 100 pounds
seed per acre. It is anticipated that the combination of pine trees with the Bermuda grass
for summer and the pine trees with the cereal rye for the winter should assimilate the
nutrient load projected to be applied. All seeded pine seedling will be improved varieties.
Pine plantations seeded at the rate of 450 trees per acre are common. It is recommended
that deceased trees be replaced promptly to ensure projected nitrogen uptake. The forage
grass will be maintained so as to limit the under story development. Any area of the
forage grass that falls below 80% land cover will be re -vegetated during the appropriate
growing season.
The pine tree plantation will be established under the auspices of a Forestry Consultant.
C. NITROGEN REQUIREMENTS OF THE CROPS:
The nitrogen requirements for the Bermuda grass and the cereal rye are based upon the
Realistic Yield Expectations (RYE) as developed by the National Resources
Conservation Service (MRCS) and is based on the Soil Type present where the crops are
to be grown. RYE values found in NCSU, Nutrient Management Planning Manual, page
75 of the Reference Section. The nitrogen requirements for the pine trees are based on
the Forestry Site Index as set forth in the NRCS Soil Survey Report for Brunswick
County, North Carolina, issued in 1986, Table # 7, and page 88-90. These Site Indexes
are also based on Soil Types present. Soil pH should be closely monitored to ensure pH
of 6.0 or less is maintained in all pine growth areas. A pH above 6.0 will definitely cause
growth problems in pine trees.
The effluent to be applied to the expansion site has consistently been above pH 7.0 for
the previous 12 months, The pH recommended for Long Leaf Pine is 5.5 — 6.0. The
application of this effluent will tend to raise soil pH overtime. The buffering capabilities
of the soil will prevent drastic shifts in soil pH. The soil pH should be monitored closely
to track soil pH trends. Appropriate actions can be developed to adjust soil pH when
deemed necessary. The corrective action to be taken will be dictated by the specific
circumstances present at that time. It would be speculation to suggest the most
appropriate action at this time. To change the pH in the soil requires time, so close
monitoring (a soil sample analysis every 6 months) should established as a standard
operating procedure.
The nitrogen recommendations for the Long Leaf Pine are based on the "grass" stage of
growth for the pines. This growth stage will last 3 to 5 year depending on soil type,
environmental conditions, and many other condition too numerous to delineate. Nitrogen
rates should be revised for a mature pine stand. Nitrogen rates for mature pine stands can
Town of Shallotte Nutrient Management Plan
November 22, 2004
Page 2 of 5
be found in EPA Process Design Manual, Land Application of Municipal Sludge (EPA -
625/1 -83-016) dated October 1083, Table 7-2 located on page 7-7.
Nitrogen recommendations are based on Plant Available Nitrogen (PAN). Bermudagrass
can uptake 50 lbs. of nitrogen for ton of RYE forage produced. Cereal rye can uptake 50
lbs. of nitrogen for ton of RYE produced. Uptake numbers are not available for all crops
on all soil types.
RYE and Site Index via Soil Type
Crop Soil Type RYE Site Index Nitrogen/acre
Bermuda grass
Baymeade
5.5 tons
275 lbs.
Bermuda grass
Blanton
4.5 tons
225 lbs.
Bermuda grass
Lynchburg.
5.5 tons
275 lbs.
Bermuda Eass
Muckolee
4.5 tons
225 lbs.
Bermuda grass
Onslow
6.5 tons
325 lbs.
Bermuda grass
Foreston
6.0 tons
300 lbs.
Cereal rye
Baymeade
n/a
Cereal rye
Blanton
n/a
Cereal ge
Lynchburg
n/a
-
Cereal a
Muckolee
n/a
Cereal a
Onslow
n/a
Cereal rye
Foreston
n/a
Longleaf pine
Ba meade
65 Low
25-30 lbs. PAN
Lon leaf pine
Blanton
70 (Moderate)
25-30 lbs. PAN
Longleaf pine
Lynchburg
74 (Moderate)
25-30 lbs. PAN
Longleaf pine
Muckolee
Not listed
25-30 lbs, PAN
Longleaf pine
Onslow
67 (Moderate)
25-30 lbs PAN
Longleaf pine
Foreston
75 (Moderate)
25-30 lbs, PAN
Site Index and RYE rates are based on the dominate soil type in the application area.
D. APPLICATION RATES:
This Nutrient Management Plan is based on the projected wastewater application rates as
developed in the soil scientist's report, Land Application Site Evaluation for Town of
Shallotte Expansion Area, Brunswick County, NC by Edwin Andrews & Associates, PC,
Consulting Hydrogeologists, Raleigh, NC, dated September 6, 1999. If the application
rates change or the nutrient content of the effluent changes then the Nutrient Management
Plan should be modified accordingly.
Town of Shallotte Nutrient Management Plan
November 22, 2004
Page 3 of 5
E. APPLICATION METHOD:
The treated effluent will be evenly applied over the entire permitted spray application site
by a solid set irrigation system appropriately engineered and installed under the
supervision of a professional engineer. The irrigation application equipment should be
calibrated annually.
F. ADDITIONAL FERTILITY REQUIREMENTS:
Only nutrients in the wastewater will be applied to the spray fields. Any additional
nutrients will be applied strictly in accordance with the annual soil test recommendations.
Soil test results for the crops grown must be obtained annually. Buffer areas where no
wastewater is applied should be maintained. The addition of commercial fertilizer
nutrients, when warranted, should be in accordance with the calculated nutrient
application from the wastewater.
G. HARVESTING of the CROPS:
The harvesting of the pine straw and ultimately the pine trees will be under the guidance
of a Forestry Consultant. ,
K SOM ERROSION and RUNOFF:
Given that the slopes on this site, as specified in the Soil Scientists Report, do not exceed
five percent (5%), a 50 foot grass buffet should prevent wastewater from migrating off
site. Adequate buffers are identified in the approved application site to ensure effluent
does not leave the approved application site.
I. ENDANGERED SPECIES:
No endangered plants or animals have been identified in the wastewater application site.
J. APPLICATION SITE:
This Nutriment Management Plan prepared for NCDENR Permit No. WQ 0000 77$.
Town of ShalIotte Nutrient Management Plan
November 22, 2004
Page 4of5
e
K. CERTWICATION:
SUBMITTED BY -DATE
Si ature of Perini e Operator
Plan prepared by: Phillip Ricks
P. O. Box 729
Oak Island, NC 28465
North Carolina & National Certified Crop Advisor # 19575
Town of Shallotte Nutrient Management Plan
November 22, 2004
Page 5 of 5