WQ0000795_Application_20180717

July 6, 2018
HIGHFILL
INFRASTRUCTURE
ENGINEERING, P.C.
Mr. Nathaniel Thornburg
NCDEQ Division of Water Resources
Non -Discharge Permitting Unit
1617 Mail Service Center
Raleigh, NC 27699
RE: Surf City WWTF Minor Permit Modification
NCDEQ DWR Permit No. WQ0000795 dated 01/11/2018
Highfill Project No.: SUR1701
Dear Mr. Thornburg:
3804 Park Avenue, Unit A
Wilmington, North Carolina 28403
Tel [phone]
NC Firm License No. C-2586
The Town of Surf City has identified several critical components of the overall treatment process at its
1,500,000 GPD WWTF located on Sarge Martin Road just south of Holly Ridge that are prematurely near
the end of their useful service lives. This situation could jeopardize the ability to maintain operational
compliance under certain conditions. Two of the components identified include the headworks and
existing disc filters.
All wastewater from the town's sewer collection system is pumped to the headworks at the WWTF for
initial treatment. The existing headworks structure includes one automatic center -flow band screen, one
spare influent channel for a future screen, and a manual screen for redundancy during higher flow
conditions and for system maintenance. Flow from the screen(s) then combines to flow through a
cyclonic grit removal system before proceeding to the SBR units. Additional equipment includes
screenings conveyance, compaction facilities, and a grit classifier unit. Factors affecting the current
operation and overall condition of the existing headworks include: 1) excessive sand and grit; 2)
hydraulic loading; and 3) corrosion from sewer gases.
The influent wastewater from the collection system contains a high level of sand and grit. This has had an
abrasive effect on the existing band screen. Facility operations staff has indicated that, under certain flow
conditions, up to three cubic yards of sand and grit have been removed from the influent wastewater
stream on a daily basis. The abrasive nature of these solids has caused extensive wear on the existing
screen components to the extent that several components have failed. Given the characteristics of the
influent wastewater, the existing unit is in need of replacement with a screen more suited for the influent
characteristics.
Wet weather facility hydraulic loadings have also had an adverse effect upon the headworks. During
higher wet weather influent flows, it is necessary to bypass wastewater to the manual bar screen channel.
These conditions require continuous attention by facility operations staff to clean the manual bypass
screen about once every hour.
Engineering is our profession. Service is our passion.

The upgrades to the WWTF headworks will mainly consist of the following:
■ Replace the existing band screen with a multi -rake type mechanical bar screen.
■ Install a multi -rake type mechanical bar screen in the spare influent channel.
Each mechanical bar rack (screen) will be manufactured from 316 stainless steel. This material is
expected to offer a greater wear resistance against the sand contained in the influent wastewater stream.
The proposed multi -rake bar screen in the spare influent channel will provide 100 percent redundancy.
With the level of screening redundancy provided, no improvements to the existing manual bar screen are
warranted as part of this project. In addition, the existing screenings wash press and discharge chute will
be replaced.
Downstream of the SBR and prior to UV light disinfection, the facility secondary (clarified) effluent is
filtered utilizing parallel Hydrotech Discfilter° units. These tertiary filters consist of woven cloth filter
panels installed on multiple rotating disks. Wastewater to be filtered flows by gravity into the center
drum and then passes through the filter media panels mounted on both sides of the rotating disk. Filtered
solids are retained within the disk while filtered water flows into the unit's collection tank. The disks are
designed to periodically rotate to allow the filtered solids to be washed from the inside of the disks and
collected in a trough for conveyance back to the headworks for treatment in the facility.
The proposed upgrade to the tertiary filtration would utilize the existing disk filter technology and add a
third disc filter in parallel to the existing filters, to add another layer of redundancy. In addition to
redundancy, adding a third filter is expected to allow the WWTF staff to operate the filters with greater
removal efficiency by allowing additional opportunity for adjustments to the disc rotation speed and
freedom to operate filters for longer periods prior to backwashing.
At this time Surf City is not requesting a flow modification from the existing permit of 1,500,000 GPD;
however, proposed equipment replacements are hydraulically suitable for anticipated future expansion of
the WWTF. Presently Surf City only wishes to take advantage of the greater redundancy and reliability
of the new equipment while allowing room for future expansion when necessary.
Please find the following attached for your review:
Current Wastewater Irrigation System Permit No. WQ0000795 dated 01/11/2018
• Equipment Specifications
• Engineering Drawings.

We trust you will find all to be in order. However, should you have any questions, concerns, or
comments, please do not hesitate to contact our office.
Sincerely,
HIGHFILL INFRASTRUCTURE ENGINEERING, P.C.
C.V. Brooks, IV, PE
(Vance Brooks)
enclosures
c: Dean Hunkele, Senior Environmental Specialist
Ashley Loftis, Town Manager
Steve Smith, WWTF Supervisor

PROJECT MANUAL
FOR
WASTEWATER TREATMENT
FACILITY UPGRADob
NNow
CO
R1701
HIGHFILL
INFRASTRUCTURE
ENGINEERING, P.C.
3804 Park Avenue, Unit A
Wilmington, North Carolina 28403
Tel [phone]
License No. C-2586

CERTIFICATION PAGE
SEAL
12925
GI
C. V. Brooks, IV, PE
Civil Project Manager
Highfill Infrastructure Engineering, P.C.
3804 Park Ave., Unit A
Wilmington, NC 28403
[phone]
NC Firm License No. C-2586
Sol Nor V" DRESS SO4ED PND Mrt0
Wes Bramlett, PE
Civil Engineer
Specification Sections All specifications excluding 26 00 00-26 28 16
Highfill Infrastructure Engineering, P.C.
301 North Main Street, Suite 2433
Winston-Salem, INC 27101
[phone]
NC Firm License No. C-2586

CERTIFICATION PAGE (continued)
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Laura M. Styles, PE
Civil Engineer
Specification Sections: All specifications excluding 26 00 00 — 26 28 16
Highfill Infrastructure Engineering, P.C.
2703 Jones Franklin Road, Suite 201
Cary, NC 27518
[phone]
NC Firm License No. C-2586
Mark A. Ciarrocca, PE
Electrical Engineer
Specification Sections 26 00 00 — 26 28 16
Cheatham and Associates, P.A
3412 Enterprise Drive
Wilmington, NC 28405
[phone]
NC Firm License No. C-1073
2

SECTION 46 21 16
MECHANICALLY CLEANED FINE BAR SCREENS - 316 SSTL
PART 1— GENERAL
1.1 SUMMARY
A. Description of Work
1. This section includes the furnishing of a front -cleaning, front -return link driven
mechanically cleaned bar screen assembly and any auxiliary equipment or
accessories to be installed in the location as indicated on the drawings and as
specified herein.
a. Number of units: 2
b. Equipment location: Outdoors, NC (Level 4)
2. All equipment supplied under this section shall be furnished by or through a
single Screening System Supplier who shall coordinate with the Contractor, the
design, fabrication, delivery, installation and testing of the screening components.
The Screening System Supplier shall have the sole responsibility for the
coordination and performance of all components of the screenings system with
the performance and design criteria specified herein.
3. The Contractor shall be responsible to coordinate all details of the screening
equipment with other related parts of the Work, including verification that all
structures, piping, wiring, and equipment components are compatible. The
Contractor shall be responsible for all structural and other alterations in the Work
required to accommodate the equipment differing in dimensions or other
characteristics from that contemplated in the Contract Drawings or
Specifications.
B. Section Includes
1. Bar screen assembly
2. Screen enclosure
3. Drive head
1.2 RELATED SECTIONS
A. Section 02 41 13 Selective Site Demolition
B. Section 05 05 19 Anchor Bolts and Expansion Anchors
C. Section 03 30 00 Cast in Place Concrete
D. Section 46 21 73 Washer Compactor
1.3 REFERENCE STANDARDS
A. American National Standards Institute (ANSI)
B. American Society for Testing and Materials (ASTM)
TOWN OF SURF CITY SECTION 46 21 16 -1
SURF CITY WWTF IMPROVEMENTS MECHANICALLY CLEANED FINE BAR SCREENS
HIGHFILL PROJECT NO. SUR1701

C. American Welding Society (AWS)
D. American Institute of Steel Construction (AISC)
E. American Bearing Manufacturers Association (ABMA)
F. American Gear Manufacturers Association (ALMA)
G. National Electrical Manufacturers Association (NEMA)
H. Underwriters Laboratory (UL)
1.4 SUBMITTALS
A. Provide submittals in accordance with Construction Specification Section 01 33 00,
Submittal Procedures.
B. The equipment manufacturer shall submit the following items:
1. Six (6) Sets of General Arrangement drawings that illustrate the layout of the
equipment, equipment weight, principal dimensions with related verifications
required for installation including anchorage locations. Other related data
including descriptive literature, Electrical Control Drawings, Catalog Cut Sheets
for individual components and Drive Motor Data.
2. A list of recommended Spare Parts including any Special Tools required for
routine maintenance of the equipment is provided in Section 2.5.
3. Six (6) Sets of O & M Manuals including As -Built Drawings of the Mechanically
Cleaned Bar Screen Arrangement, Controls and Accessories shall be provided in
digital format after equipment shipment for inclusion in the Close -Out Submittal
process.
4. For sites that have 3 ft or greater head differential, equipment manufacturer shall
provide Structural Certification from a licensed Civil engineer.
1.5 QUALITY ASSURANCE
A. Comply with Construction Specification Section 01 40 00, Quality Requirements.
B. The Mechanically Cleaned Bar Screens shall be fully assembled and shop tested at the
manufacturing facility prior to shipment. Shop testing shall include a minimum of 4 hours
of run time. The contractor, the engineer, the owner or the owner's designated
representative reserves the right to witness the shop test. A minimum three (3) week
notice shall be provided prior to the test to allow for travel coordination.
C. To assure quality and performance: All equipment furnished under this Section and
related sections shall be of a single manufacturer who has been regularly engaged in the
design and manufacture of the equipment and demonstrates, to the satisfaction of the
Engineer, that the quality is equal to equipment made by those manufacturers specifically
named herein. And the screen manufacturer shall have at least 25 installations of the
specified model of mechanically cleaned bar screen equipment that has been in
successful operation, at similar installations, for at least ten (10) years. Upon request, the
manufacturer shall provide a reference of such installation sites along with the relevant
contact information.
TOWN OF SURF CITY SECTION 46 21 16 -2
SURF CITY WWTF IMPROVEMENTS MECHANICALLY CLEANED FINE BAR SCREENS
HIGHFILL PROJECT NO. SUR1701

D. The equipment furnished shall be fabricated, assembled, installed and placed into proper
operating condition in full conformity with approved drawings, specifications, engineering
data, and/or recommendations furnished by the equipment manufacturer.
E. The Screening System shall have "All operations, origin of manufactured, after sales
service & support" in the United States of America.
1.6 DELIVERY, STORAGE, AND HANDLING
A. Comply with Construction Specification Section 01 60 00, Product Requirements for
transporting, handling, storing, and protecting products.
1.7 WARRANTY
A. Manufacturer shall provide a written one-year standard warranty from the date of use of
the mechanically cleaned bar screen equipment to guarantee that there shall be no
defects in material or workmanship in any item supplied.
B. Manufacturer shall warrant for the period of 5 years all rotating parts of the Mechanically
Cleaned Bar Screen including the gear motor, bearing, drive head, and the link system
including the links, castings, pins and retaining rings. Manufacturer warrants that these
components shall be replaced if damaged or defective in the normal use of the
equipment.
PART 2— PRODUCTS
2.1 MANUFACTURERS
A. Duperon Corporation
B. Hydro -Dyne
C. HUBER
D. Or Approved Equal
Any Contractor submitting an "or approved equal' piece of equipment for the
project shall bear all costs for structural, mechanical and electrical review by the
Engineer.
E. Any redesign and additional construction costs shall also be the responsibility of the
Contractor.
2.2 BASIS OF DESIGN
A. The mechanically cleaned bar screen shall have a head sprocket only, with no sprockets,
bearings, idlers, or similar drive components under water to trap the chain. Equipment
featuring reciprocating rake arms or lower bearings/sprockets/tracks below the water is
not acceptable.
B. The mechanically cleaned bar screen shall meet the total screen debris removal capacity
of:
Scraper Ratio below Water Level:
Upstream Water Level (ft) = Number of Scrapers below Water level
1.745 ft
TOWN OF SURF CITY SECTION 46 21 16 -3
SURF CITY WWTF IMPROVEMENTS MECHANICALLY CLEANED FINE BAR SCREENS
HIGHFILL PROJECT NO. SUR1701

Debris Volume per Linear Foot = 0.152 ft3 /hr (0.046 m3/m)
Total Screen Debris Removal Capacity on Low (ft3/hr) _
(0.152 ft3/ft) x (Screen Width) x 60 x (Number of Scrapers below Water Level)
Total Screen Debris Removal Capacity on High (ft3/hr) _
(0.152 ft3/ft) x (Screen Width) x 260 x (Number of Scrapers below Water Level)
C. The flow ability of the screen area, specifically, shall be defined as follows: A composite
number representing the specific flow- ability of a screen area composed of the bars'
Hydraulic Headloss Coefficient Shape Factor, the bar width and the clear opening of the
screen field per formula below.
(Coefficient Shape Factor) x ( Bar Width ) _ ( 0.190 )
(Clear Opening) (Clear Opening)
D. The mechanically cleaned bar screen shall be designed to run continuously 24/7, without
an operator.
E. The equipment shall have multiple scrapers on the bar screen at one time cleaning
continuously from bottom to top, the entire width of the bar screen. The drive output shaft
rotation shall be constant and in one direction in order to reduce maintenance and
increase product life. Units which have single raking arms or that require cycle times shall
not be allowed. Cleaning mechanisms that utilize shock absorbers, springs or other
dampening or hydraulic actuations are unacceptable.
F. The link system shall have jam evasion capability by flexing around and collecting large
objects such as a 2'x 4', bowling ball, grease balls and surges of solids at peak loading
times without overloading and shutting down the unit. The link system shall be such that
it bends in one direction only which allows it to become its own lower sprocket and frame
and shall have a 1,000 -pound lifting capacity.
I�
Z
Designs employing the use of endless moving media or cables and hydraulic cylinders to
remove debris from the channel and units utilizing proximity or limit switches for reverse
cycles are not acceptable.
Equipment utilizing a greater than '/z HP motor or two or more motors to complete a
screen cleaning cycle is not acceptable.
Design Conditions:
Site Installation Information:
Channel Width:
2.5 ft
Channel Height:
5 ft
Downstream Channel Water Depth:
2 ft
Bar Opening Size:
0.25 Inch
Angle of Installation:
15 Deg from Vertical
Average Flow:
3 MGD
Average Water Level:
1.65 Ft Upstream
Maximum Flow:
7.5 MGD
Maximum Water Level:
3 Ft Upstream
Maximum Head Differential:
1 ft
Equipment Location:
Outdoors
Outdoor Installation:
Below Freezing Temperatures:
15 F
Installation Area (Envelope) Classification:
Class I Div I
Collection and Conveyance
TOWN OF SURF CITY SECTION 46 21 16 -4
SURF CITY WWTF IMPROVEMENTS MECHANICALLY CLEANED FINE BAR SCREENS
HIGHFILL PROJECT NO. SUR1701

2.3
Containment Height:
See Plans
Debris Bin:
See Plans
Conveyor:
No
Washer/Compactor:
Yes, Dual Auger
COMPONENTS
A. Bar screen assembly: Bar screen assembly shall be of stainless steel and designed to
withstand 1 -foot head differential unless noted otherwise in Section 2.2.1 - Design
Conditions. Unless noted otherwise materials of construction shall be 316 Stainless
Steel. A stainless-steel channel bottom plate shall be an integral part of the bar screen
assembly to fully engage scrapers in the bar screen at the base of the unit and assure
that the raking mechanism reaches the bottom of the screen to prevent debris
accumulation. The Bar screen assembly shall be shipped in one piece.
1. Screen Bars: Bars shall be 316L stainless steel and be tear -shaped with a
Hydraulic Coefficient shape factor of 0.76 and the minimum dimensions of 0.25
inch x 0.75 inch x 0.13 inch. Bars shall be individually replaceable without
welding.
2. Side Fabrication: The screen framework shall be 316 stainless steel bent plate
with minimum of 3/16 inch cross section. Horizontal members shall be of
stainless steel bent plate or stainless steel pipe. Support members and frame
shall adequately support the bar screen based on site specific requirements.
3. Dead Plate: Dead plate shall be 0.25 inch thick 316 stainless steel. The dead
plate shall be flat and true; span the entire width of the unit; and transition from
bar screen to discharge point.
4. Discharge Chute: The discharge chute shall be 11 ga. (0.12 inch) 316 stainless
steel. The discharge chute shall be bolted to the dead plate and shall be
designed to allow debris to be transferred from discharge point into the debris
containment.
5. Link Slides: Link slide assembly shall be provided per manufacturer standard
design and shall be constructed of UV Stable UHMW PE rollers and 316
stainless steel supports and components.
B. Return Guide/Closeouts: Return guide/Closeouts shall be 316 stainless steel and shall
assure proper alignment of scrapers as they enter the bar screen and assure that there is
no space wider than the clear opening between bars to prevent passage of larger solids
than allowed through the screen.
C. Debris Blade: A 316 stainless steel and UV Stable UHMW-PE debris blade assembly,
which does not require a separate drive, shall be installed to assist in removing debris
from the scraper on the mechanically cleaned bar screen unit as recommended by the
manufacturer. Hydraulic, shock, or spring controlled debris blade mechanisms are not
acceptable.
D. Screen Enclosure: A 14ga. #4 brushed satin finish 316 SSTL Enclosure shall be installed
to cover the screen above the operating deck level. Front Enclosure shall have
removable panels for access to equipment. Removable panels shall be 16ga. 316 SSTL
and shall be provided with knurled knobs for "no tool required" access. Alignment
notches shall be included to support repositioning of removable panels. The top of the
Front enclosure shall include a knock out for a customer site option to install a 6 -inch
TOWN OF SURF CITY SECTION 46 21 16 -5
SURF CITY WWTF IMPROVEMENTS MECHANICALLY CLEANED FINE BAR SCREENS
HIGHFILL PROJECT NO. SUR1701

diameter pipe stub. Rear Enclosure shall have hinged removable doors and shall be
secured with a lift -slide -latch handle. Rear removable door shall include an integral
viewing door that shall be secured with a lift -slide -latch handle to provide access for a
quick look inside.
For multi -deck applications, 14ga. #4 brushed satin finish 316 SSTL side shields will also
be provided.
1. Front Enclosure Design Options:
a. SSTL removal panels
E. Link System: The link system shall be passivated stainless steel castings and have a
minimum ultimate strength of 60,000 lbs with a minimum cross section of 1.5 inches and
weighing a minimum of 4.5 lbs each. Parts must meet ASTM A380 specification for
surface finish.
316 stainless steel link system includes 316 stainless steel retaining rings and
316 stainless steel pins.
F. Scrapers: Scrapers shall be spaced 21 inches apart. To provide long product life the
scraper shall move at no greater than 28 inches per minute at standard operating speed
of/2 rpm allowing for approximately 1 debris discharge per minute. Staging Scrapers and
Thru Bar Scrapers shall be a maximum ratio of 3:1 per manufacturer recommendations.
At least one scraper every 84 inches shall fully penetrate the bar screen, cleaning all
three sides of the bars.
Staging Scrapers; Staging Scrapers shall be 1 inch thick x 4 inches x screen
width UV Stable UHMW-PE with a serrated edge.
2. Thru Bar Scrapers: Thru Bar Scrapers shall be minimum .375 inch thick x 5
inches x screen width 316 stainless steel.
G. Drive Head: The Drive Head shall be located at the top of the mechanically cleaned bar
screen.
Drive Unit: Each mechanically cleaned bar screen unit shall operate
independently and shall have its own drive unit and driven components.
Drive Sprockets and end castings shall be cast 316 stainless steel.
Drive Shaft shall be 316 stainless steel.
C. Gearbox shall be shaft -mounted, right angle type and include spiral bevel
gearing. The output shaft speed shall be controlled by a vector type
inverter or per rake manufacturer's recommendation. It shall have at
least a 1.52 or greater service factor based on machine torque
requirements. The gearbox shall not be vented to the outside
atmosphere. The gearbox shall be grease filled. Oil filled gearboxes are
not allowed.
The motor shall be AC induction type, inverter duty, 3 phase240/480 volt
and mounted to the gear reducer. The motor shall be'/z hp, designed for
1800 RPMs base speed and rated for Class I, Groups C & D, Class II
Groups F & G environments. The motor shall have an EPNV enclosure,
NEMA design B with a 56C frame size. Service factor shall be 1.0 or
TOWN OF SURF CITY SECTION 46 21 16 -6
SURF CITY WWTF IMPROVEMENTS MECHANICALLY CLEANED FINE BAR SCREENS
HIGHFILL PROJECT NO. SUR1701

greater, Class F insulation and be optimized for IGBT type inverters. The
motor must be UL listed and designed for continuous operation.
Motor shall have built in, normally closed, thermostat to protect from
overheating that is to be field wired to corresponding terminal in control
panel for redundant (ambient) overload protection.
All drive head components shall be of components available in the
United States.
2. Bearing: Bearing shall be greased ball bearing type, non self -aligning, sealed
and lubricated and shall have a 24/7/365 L10 life of 20 years when in compliance
with stated O&M recommendations. Non -sealed bearings are not acceptable.
3. Speed Reducer: Speed reducer shall be a double -reduction, cycloidal style and
shall comply with all applicable AGMA standards. The speed reducer shall be
capable of a 4/1 speed range with variable output speeds between 0.50 to 2.2
output RPMs (in high flow conditions). The speed reducer shall produce an
output torque of 11,417 in.lb. and have a gear ratio of 809:1
H. Standard Coating: All non -stainless bar screen components shall be coated in strict
accordance with the paint manufacturer's specification. Surface Preparation shall be
done in accordance with SSPC-SP-10 Near White. The three-part coating system shall
be manufactured by Tnemec as follows: Prime Coat Series 90-97 Tneme Zinc at 2.5-3.5
mils DFT, Intermediate Coat Series 27 F.C. Typoxy at 3.0-5.0 mils DFT, and Top Coat
Series 1075U Endura -Shield II at 2.0-3.0 mils DFT. Standard color is 11 SF Safety Blue.
Material shall meet all state and federal VOC and other regulatory requirements.
Alternatives: Any alternate products must provide certified test reports when submitting
products other than those specified herein the specification. Test reports shall indicate
the test method, system and requirements for those products being submitted, and shall
meet or exceed the test criteria and performance values of the specified coatings herein.
2.4 ELECTRICAL, CONTROLS, OPERATION
A. General: Controls for each rake shall be in enclosures provided by the bar screen
manufacturer. The bar screen manufacturer shall be responsible for proper sizing and
function of the controls at 480V, unless specified otherwise.
1. Main control panels require shading from the sun and shall be operated within a
temperature range between 35°F and 104°F. Sunshields, visors or other
structures needed to provide shade shall be furnished by the Contractor.
2. Controls shall be designed to accept incoming power supply per plans/specs and
shall include a step-down transformer as needed to achieve 120V.
3. Control Panel(s) shall be constructed to meet the appropriate NEMA
classification requirements and will include a main, lockable disconnect. The
panel will be constructed by a UL certified control panel build facility and will be
supported by the appropriate UL labeling.
4. Controls shall be tested prior to shipment to owner. The rake manufacturer shall
verify all overload settings in the rake controller to insure proper overload and
speed settings required for the application are properly programmed.
5. Control panel(s) shall be wired complete with a minimum of #16 MTW wire in the
appropriate colors for the circuits being supplied. 120VAC control shall be red,
TOWN OF SURF CITY SECTION 46 21 16 -7
SURF CITY WWTF IMPROVEMENTS MECHANICALLY CLEANED FINE BAR SCREENS
HIGHFILL PROJECT NO. SUR1701

grounded AC neutral shall be white, DC control shall be blue, DC neutral shall be
blue with a white tracer, equipment ground shall be green and all incoming and
outgoing external power source wires shall be a yellow configuration. All AC
power wiring shall be a minimum of #12 Black. All wires shall be labeled at both
ends with heat -shrink wire markers. Internal panel wiring shall be contained in
non-flammable, covered wire way.
6. All panel(s) and panel mounted devices shall be labeled with engraved I.D.
markers that reference back to the system schematics. Tags shall be white with
black core, engraved as required.
7. All field wiring and power cables between the bar screen Main Control Panel and
the Local Push Button Station shall be provided by others under the Electrical
Section. VFD rated motor cable (Belden #29502 or equal) is recommended for all
motors. Motor cables shall be less than 80 ft unless otherwise specified.
B. Components
1. Main Control Panel
a. Enclosure(s) shall be NEMA 4X 316 SSTL for outdoor installations.
b. Enclosure shall not be located in an explosive environment.
C. Main Control Panel shall be designed with a SCCR rating of 18KA at
480VAC minimum and labeled as such, unless otherwise specified.
All terminals utilized in the main panel shall be 600V rated terminals and
20% spare terminal space shall be provided for any potential future
revisions.
The Main Control Panel shall include at a minimum the following
i. Main fusible disconnect with lockable operator, unless otherwise
specified.
ii. Physical or virtual Hand/Off/Auto (HOA) Selector and Push/pull
E -Stop button.
iii. Elapsed run-time meter
iv. Indication for "Power On", "Forward" and necessary faults.
Relay Based Controls shall include the following:
i. Variable Frequency Drive (VFD)
ii. Electronic torque control
iii. Hard contact SCADA Interlock(s)
iv. Adjustable on/off cycle timers
2. Local Control Push Button Station
Enclosure shall be NEMA 4X 316 SSTL for outdoor installations. Local
push button station must be local to the equipment to maintain
requirements of local safety codes as determined by the Engineer.
Local station shall be mounted within 10 feet or as close to the
equipment as safely possible and be field wired by the electrical
subcontractor to the corresponding terminal inputs in the main control
panel.
TOWN OF SURF CITY SECTION 46 21 16 -8
SURF CITY WWTF IMPROVEMENTS MECHANICALLY CLEANED FINE BAR SCREENS
HIGHFILL PROJECT NO. SUR1701

C. The remote pushbutton station shall include Forward, Jog Reverse and
E -Stop buttons.
3. Operation: Each raking assembly shall have a separate level system that shall be
installed and field wired by others per the manufacturer's instructions.
a. Normal operation shall be automatic level control.
i. Differential Level Control: Shall use a Relay based logic control
with mechanical float switch. The rake will automatically
start/stop based on the headloss across the screen. Cycle
timing logic shall also be included in the program that shall
function in parallel with the differential level control logic for
optimal rake run time. Level sensing instrumentation shall be
Anchor Scientific Float Type P float switch upstream, and the
existing ultrasonic level transducer will remain downstream.
Provide run command based on differential level.
b. Control system will also allow for operation in HAND mode.
C. Controls Design Conditions
Incoming Power: (Voltage/Phase
480/3/60
Enclosures:
One Main Control Panel
Installation location:
Outdoors
Approx. distance between main panel and equipment motor
See Drawings
Climate controlled location:
No
Outdoor location (must be shaded): For temperatures below
By Contractor
35° F select Outdoors Option 1. For temperatures above 104° F
select Outdoors Option 2
Outdoors Option 1: Thermostat, heater and fan w/
Required
grilles and rain hoods for ventilation. Appropriate
N4X rating by the addition of grilles is acceptable, if
is rated N4X prior to install of grilles.
Outdoors Option 2: Thermostat, air conditioner and
Required
heater.
Transducer/Float cable length 50 ft standard):
50 ft
2.5 SPECIALTY TOOLS, SPARE PARTS, AND LUBRICATION
A. Manufacturer shall provide any specialty tools and recommend spare parts required for
maintaining the equipment as follows:
1. Drive Clevis Pin (1)
2. Snap/Retaining Rings (10)
3. Link Clevis Pins (4)
4. Scraper Bolts (4)
5. Scraper Nuts (4)
6. Snap Ring Tool (1)
7. Never Seez, 1 oz. tube (1)
TOWN OF SURF CITY SECTION 46 21 16 -9
SURF CITY WWTF IMPROVEMENTS MECHANICALLY CLEANED FINE BAR SCREENS
HIGHFILL PROJECT NO. SUR1701

B. Manufacturer shall provide one tube of Multi -Purpose grease which is a 5 -year supply of
lubrication, required for maintaining all bar screen components.
PART 3— EXECUTION
3.1 SHIPMENT
A. Shipment of all equipment shall be coordinated to allow the screen shipment as one
complete integrated assembly unless otherwise specified by the customer, contractor, or
engineer.
3.2 INSTALLATION
A. Equipment shall be installed in strict conformance with the manufacturer's installation
instructions, as submitted with Shop Drawings, Operation and Maintenance Manuals
and/or any pre -installation checklists. Installation shall utilize standard torque values and
be installed secure in position and neat in appearance. Installation shall include any site
preparation tasks as required by the engineer or manufacturer; such as unloading, touch-
up painting, etc. and any other installation tasks and materials such as wiring, conduit,
controls stands as determined by the customer and/or specified by the manufacturer.
B. Anchor Bolts: Anchor bolts and nuts shall be 316 stainless steel and furnished for each
item of equipment by the Contractor.
1. Anchor bolt template drawings shall be included in the submittal to permit
verification of the location structural elements, new or existing in the concrete.
2. Anchor bolt sizes, quantity and requirements will be indicated on the submittal
drawings. Quantity is site specific but typically each Barscreen assembly requires
(8) to (12) 1/2" dia. x 4 1/2" Lg. embed HILTI HAS RODS w/ / Hilti RE -500V3
Safe Set Adhesive System anchor bolts for Mechanical Screen anchorage and
typically (8) to (12) 3/8" dia. x 3 3/8" Lg. embed HILTI HAS RODS w/ Hilti RE -
500V3 Safe Set Adhesive System anchor bolts for the Return Guide/Closeouts
anchorage
3.3 TESTING
A. After completion of installation, Contractor shall provide for testing and shall be
performed in strict conformance with the manufacturer's start up instructions. Testing of
the bar screen shall demonstrate that the equipment is fully operational by picking up and
depositing materials into specified containment.
B. Field certification shall include inspection of the following:
1. Verify equipment is properly aligned and anchored per the installation
instructions and drawings. Assure the bar screen unit is square, flat and
unobstructed with required clearances maintained.
2. Assure controls and instrumentation work in all modes.
3. Check equipment for proper operation of debris blade, scrapers, etc as well as
completion of the Start -Up requirements in the installation guide.
3.4 ONSITE TECHNICAL ASSISTANCE
A. Manufacturer shall provide services to include Installation Certification, and shall include
(1) day for Start -Up and (1) day for Training. Manufacturer shall be given minimum 14
TOWN OF SURF CITY SECTION 46 21 16 -10
SURF CITY WWTF IMPROVEMENTS MECHANICALLY CLEANED FINE BAR SCREENS
HIGHFILL PROJECT NO. SUR1701

days notification prior to the need for such services. To assure the best outcome for the
Owner and Contractor, the Contractor shall provide certification for completion of the
PRE -COMMISSIONING CHECKLIST.
END OF SECTION
TOWN OF SURF CITY SECTION 46 21 16 -11
SURF CITY WWTF IMPROVEMENTS MECHANICALLY CLEANED FINE BAR SCREENS
HIGHFILL PROJECT NO. SUR1701

SECTION 46 21 73
SCREENINGS WASHING AND COMPACTING EQUIPMENT
PART 1— GENERAL
1.1 SUMMARY
A. Description of Work
Contractor to furnish all labor, materials, equipment, and incidentals required for
the dual auger washer compactor assembly as shown on the Drawings and as
specified herein.
B. Related Sections
Mechanically Cleaned Fine Bar Screen — Section 46 21 16
1.2 REFERENCES
A. American Welding Society (AWS)
B. AWS D1.1 Structural Welding Code — Steel
C. American Institute of Steel Construction (AISC)
D. Manual of Steel Construction
1.3 SUBMITTALS
A. Provide submittals in accordance with Construction Specification Section 01 33 00,
Submittal Procedures.
B. The Contractor shall furnish shop drawings, catalog data, operation and maintenance
manuals, installation instructions, parts list, layout drawings, equipment design data,
testing data and reports to show full compliance with these specifications.
Shop Drawings (including main layout drawings, list of equipment specifications,
equipment weight, principal dimensions with related verifications required for
installation, electrical control drawings, drive motor data and recommendations
furnished by the equipment manufacturer).
2. As -Built Drawings of the Washer Compactor Structure, Controls, and
Accessories.
3. A list of recommended Spare Parts including any Special Tools required for
routine maintenance of the equipment.
4. O&M Manuals, including As -Built drawings, (4) sets shall be provided after
equipment ships for inclusion in the close-out Submittal process.
1.4 QUALITY ASSURANCE
A. Comply with Construction Specification Section 01 40 00, Quality Requirements.
B. All equipment furnished under this Section shall be of a single manufacturer and
demonstrate, to the satisfaction of the Engineer, that the quality is equal to equipment
made by those manufacturers specifically named herein.
TOWN OF SURF CITY SECTION 46 21 73-1
SURF CITY WWTF IMPROVEMENTS WASHING & COMPACTING EQUIPMENT
HIGHFILL PROJECT NO. SUR1701

C. The equipment furnished shall be fabricated, assembled, erected, and placed in proper
operating condition in full conformity with approved drawings, specifications, engineering
data, and/or recommendations furnished by the equipment manufacturer.
1.5 DELIVERY, STORAGE, AND HANDLING
A. Comply with Construction Specification Section 01 60 00, Product Requirements for
transporting, handling, storing, and protecting products.
1.6 WARRANTY
A. Manufacturer shall provide a written one-year standard warranty from the date of use of
the washer compactor equipment to guarantee that there shall be no defects in material
or workmanship in any item supplied.
1.7 ACCEPTABLE MANUFACTURERS
A. Duperon
B. Hydro -Dyne
C. HUBER
D. Or Approval Equal
PART 2— PRODUCTS
2.1 WASHER COMPACTORS
A. Design Criteria
1. Compacting Action: Dual augers provide positive displacement action, are
orientated on top of each other and rotate in opposing directions. The augers are
intermeshed and are of one left hand and one right hand lead. Compactor
augers shall be designed with a limited float on top of a perforated plate strainer,
allowing them to accommodate irregular debris.
2. Washing Action: The wash water manifold shall be integrated into the main
housing. Two ports inside the unit emit a medium pressure stream. Water supply
shall be capable of 3 to 5 GPM at a pressure of 40 to 60 PSI. A'/2 inch NPT
stainless steel connection is provided for attaching water source. Water may be
filtered effluent or municipal water. Drain connection shall be 3" NPT male.
3. Operation: Washer Compactor is designed to be continuous run, not requiring an
operator. Washer Compactor is equipped with a self-regulating, active pressure
zone designed to accept non-standard wastewater debris in its original form,
such as rocks, broken concrete, and metal (bolts, short pipe, etc.) up to 4 inches
long. Washer Compactor shall have the ability to process multiple pieces of
clothing, variable volumes of debris, and unprocessed septage or grease.
Compactor moves at normal operating speed of 0.5 to 2.2 RPM and can run
intermittently to sync with upstream equipment.
TOWN OF SURF CITY SECTION 46 21 73-2
SURF CITY WWTF IMPROVEMENTS WASHING & COMPACTING EQUIPMENT
HIGHFILL PROJECT NO. SUR1701
Washer Compactor Performance Criteria
Number of Washer Compactors: 2
Model Capacity 30 cu.ft./hr.
Wastewater Application up to 15 MGD (1/4" barscreen)
TOWN OF SURF CITY SECTION 46 21 73-2
SURF CITY WWTF IMPROVEMENTS WASHING & COMPACTING EQUIPMENT
HIGHFILL PROJECT NO. SUR1701

Peak Capacity (approx. 7 minutes):
10 cu. ft./hr.
Average Capacity (continuous):
6 cu. ft./hr.
Water Requirements:
Utilizes filtered effluent or
munici al water
Consumes 3-5 gallons per minute
Requires 40 to 60 PSI
'/2 inch NPT supply — Female
threads
3 inch NPT drain — male threads
Materials of Construction:
316 SSTL
17-4 spur grears
Delrin (or equiv.) thrust and plane
bearings
UHMW auger supports
Hopper Height Deck to Hopper):
38"
Hopper Length WC3.A2.6 Unit):
43"
Below Freezing temperatures:
Heat tracing is required to be
installed on support, transition
and discharge chutes (installation
by Contractor).
Performance Data
dry solids
30%-60%
mass/weight reduction
60%-70%
volume reduction
80% 6:1)
Significantly decreases odor/fecal
Motor/Drive
Motor Size:
0.75 HP
Motor Paint:
Duperon® Standard Tnemec
Coating
Motor Service Factor (minimum):
1
Output Speed:
2.2 RPM
Speed Reducer Ratio/Output:
809:01:00
Speed Reducer Paint:
Duperon® Standard Tnemec
Coating
Site Power
PhaseNolta e:
3 Phase 240/480 volt
Controls
Integrated into Main Panel for the
Bar Screens
Main Control Breaker
Emergency Stop
HOA (Auto is discreet "Run"
input)
Fwd/Jog Reverse/E-Stop push
button station
"Run" and "In Auto' discrete
outputs
TOWN OF SURF CITY SECTION 46 21 73-3
SURF CITY WWTF IMPROVEMENTS WASHING & COMPACTING EQUIPMENT
HIGHFILL PROJECT NO. SUR1701

IE
Components
1. Main Housing: The main housing of the compactor shall be constructed of
stainless steel and be a minimum of 11 Gauge and connect to 3/8 inch thick
flanges.
2. Augers: Shall be of stainless steel with 8 inch diameter flights 3/8 inch thick and
have a 4 inch flight pitch. Augers shall be coupled to a transmission at the drive
end and supported at the compaction end with UHMW plane bearings. Such
arrangement allows movement for accommodation of irregular debris.
3. Compaction Housing: Shall be 1/4 stainless steel and shall house a spring and
gate assembly which provides the resistance for compaction. The housing shall
contain the Auger Supports.
4. Water Supply: The water supply shall connect at a single point with a 1/2 NPT
female connector. Ball valves shall be provided to distribute flow to the washing
and trough sprayer connections.
5. Drain Trough: A removable pan shall be provided under the main housing. It will
collect the washwater and drain to a 3"NPT male drain port. The pan will be
minimum 11 gage stainless steel.
6. Drive Assembly:
a. Each Washer Compactor unit shall operate independently and will have
its own drive unit and driven components. The gearbox shall not be
vented to the outside atmosphere.
The gearbox shall be grease lubricated and designed for 5 years (or
20,000 hours of operation) between recommended clean and re -grease
services. The gearbox shall be right angle type and shall incorporate
cycloidal and spiral bevel gearing with a total ratio of 809:1. The gear
reducer output shaft speed shall be 0.5 RPM minimum to 2.2 RPM
maximum and controlled by an AC Tech, vector type inverter or greater
service factor based on unit torque requirements. It shall be shaft
mounted utilizing the keyless Taper -Grip® bushing.
C. The motor shall be mounted to the gear reducer by utilizing a quill, C -
Face mounting style. The motor shall be AC induction type, 0.75 hp,
3/60/230/460 volt, explosion proof, inverter duty model.
d. The drive assembly shall incorporate the Duperon® standard coating
system.
7. Auger Transmission
The Drive Assembly shall be coupled to a dual gear transmission which
drives the augers in counter rotation.
TOWN OF SURF CITY SECTION 46 21 73-4
SURF CITY WWTF IMPROVEMENTS WASHING & COMPACTING EQUIPMENT
HIGHFILL PROJECT NO. SUR1701
Explosion Proof Local Stations
Standard.
Controls Mounting
Wall
Pedestal (By Others
Components
1. Main Housing: The main housing of the compactor shall be constructed of
stainless steel and be a minimum of 11 Gauge and connect to 3/8 inch thick
flanges.
2. Augers: Shall be of stainless steel with 8 inch diameter flights 3/8 inch thick and
have a 4 inch flight pitch. Augers shall be coupled to a transmission at the drive
end and supported at the compaction end with UHMW plane bearings. Such
arrangement allows movement for accommodation of irregular debris.
3. Compaction Housing: Shall be 1/4 stainless steel and shall house a spring and
gate assembly which provides the resistance for compaction. The housing shall
contain the Auger Supports.
4. Water Supply: The water supply shall connect at a single point with a 1/2 NPT
female connector. Ball valves shall be provided to distribute flow to the washing
and trough sprayer connections.
5. Drain Trough: A removable pan shall be provided under the main housing. It will
collect the washwater and drain to a 3"NPT male drain port. The pan will be
minimum 11 gage stainless steel.
6. Drive Assembly:
a. Each Washer Compactor unit shall operate independently and will have
its own drive unit and driven components. The gearbox shall not be
vented to the outside atmosphere.
The gearbox shall be grease lubricated and designed for 5 years (or
20,000 hours of operation) between recommended clean and re -grease
services. The gearbox shall be right angle type and shall incorporate
cycloidal and spiral bevel gearing with a total ratio of 809:1. The gear
reducer output shaft speed shall be 0.5 RPM minimum to 2.2 RPM
maximum and controlled by an AC Tech, vector type inverter or greater
service factor based on unit torque requirements. It shall be shaft
mounted utilizing the keyless Taper -Grip® bushing.
C. The motor shall be mounted to the gear reducer by utilizing a quill, C -
Face mounting style. The motor shall be AC induction type, 0.75 hp,
3/60/230/460 volt, explosion proof, inverter duty model.
d. The drive assembly shall incorporate the Duperon® standard coating
system.
7. Auger Transmission
The Drive Assembly shall be coupled to a dual gear transmission which
drives the augers in counter rotation.
TOWN OF SURF CITY SECTION 46 21 73-4
SURF CITY WWTF IMPROVEMENTS WASHING & COMPACTING EQUIPMENT
HIGHFILL PROJECT NO. SUR1701

b. The spur gears are contained in a stainless steel housing and supported
by Delrin (or equivalent) plane bearing.
C. Grease fittings shall be located outside of the transmission housing to
provide lubrication to the gears.
8. Speed Reducer
a. Shall have a maximum output of 2.2 RPM, 809:1 reduction ratio with
18,900 in -Ib. of output torque.
9. Thrust Bearings
a. Shall be Delrin (or equivalent), self-lubricating and be capable of
withstanding minimum 2000 Lb. of thrust load (each auger) at 2.2 RPM
for life of machine.
10. Screw Supports
a. Shall be UHMW plane type, self-lubricating and fastened into place using
stainless steel fasteners.
11. Spur Gears
a. Shall be 17-4 PH stainless steel.
C. Spare Parts and Special Tools Shall include the following:
1. 2 side screw supports
2. 2 upper/lower screw supports
3. Fasteners
4. 14 oz. grease tube
D. Heat Trace and Blanket Kit. The kit includes:
1. Teflon heat blanket (weather proof) construction, removable.
2. Heat Trace (heating cable) is self-regulating type, 12 AWG buss, 10 Watts/ft. Kit
includes 1 00f of cable.
3. Thermostat is NEMA 4X and has a remote probe for detecting temperature inside
heat blanket. Field mounting and wiring by others.
4. Junction box includes materials necessary for explosion proof termination of heat
trace. Field mounting by others.
5. Power requirement 120VAC / 1000 watts shall be powered off the bar screen
control panel.
6. Components are suitable for CLASS I, DIVISION I areas.
2.2 MATERIALS
TOWN OF SURF CITY SECTION 46 21 73-5
SURF CITY WWTF IMPROVEMENTS WASHING & COMPACTING EQUIPMENT
HIGHFILL PROJECT NO. SUR1701

A. Fabrications: All welded fabrications are to be made from stainless steel. All welded
connections and welding procedures shall comply with AWS "Structural Welding Code —
Sheet Steel" D1.3/D1.6.
B. Select Parts: Select power transmission parts to be made from cast iron; however, shall
conform to coating as follows
C. Standard Coating:
Motor Gearbox shall be coated in strict accordance with the paint manufacturer's
specification. Surface Preparation shall be done in accordance with SSPC-SP-
10 near White. The three-part coating system shall be manufactured by Tnemec
as follows: Prime Coat Series 90-97 Tnemec Zinc at 2.5-3.5 mils DFT,
Intermediate Coat Series 27 F.C. Typoxy at 3.0-5.0 mils DFT, and Top Coat
Series 1075U Endura -Shield II at 2.0-3.0 mils DFT. Standard color is 11 SF
Safety Blue. Material shall meet all state and federal VOC and other regulatory
requirements.
2. Alternatives: Any alternate products must provide certified test reports when
submitting products other than those specified herein the specification. Test
reports shall indicate the test method, system and requirements for those
products being submitted, and shall meet or exceed the test criteria and
performance values of the specified coatings herein.
D. Non-metal: Parts not covered above shall be made from UHMW polyethylene.
2.3 CONTROLS
A. General: Controls shall be provided by Washer Compactor manufacturer. Controls shall
be designed to accept 3PH 240/480 volt incoming power supply per plans/specs. Control
panel power shall be 1 PH/120VAC and shall include a step-down transformer to achieve
120V.
B. Controls shall be built by a UL -approved panel builder and bear the UL -approved logo.
Controls shall be tested by panel builder and by the Washer Compactor manufacturer
prior to shipment to owner. The Washer Compactor manufacturer shall verify all overload
settings in the Washer Compactor controller to insure proper overload and speed settings
required for the application are properly programmed.
C. Main Panel:
1. Main control panels require shading from the sun and shall be operated within a
temperature range between 35 and 104 F. Sunshields, visors, or other structures
necessary to provide shade shall be furnished by the Contractor.
2. The controls shall be rated NEMA 4X.
3. Control panel shall have an inner door pocket that includes a copy of As -Built
drawings from the manufacturer, as well as any other pertinent documentation
necessary to properly operate the controls.
4. The control package shall include the following and utilize the panel builder's
standard component manufacturers, unless otherwise approved by the Washer
Compactor manufacturer:
a. Integrated into the Main Panel for the Bar Screens.
TOWN OF SURF CITY SECTION 46 21 73-6
SURF CITY WWTF IMPROVEMENTS WASHING & COMPACTING EQUIPMENT
HIGHFILL PROJECT NO. SUR1701

b. High voltage transformer.
C. HOA Selector where Hand mode shall enable the local station and Auto
receives a Run signal from a remote/discrete source. When input signal
is cut, the Washer Compactor shall then utilize an off -delay timer to allow
debris to finish depositing.
d. Duperon® (or approved equal) speed controller (based on vector drive
technology), pre-programmed for speed/overload control by the panel
builder and verified by the Washer Compactor manufacturer.
e. Dry contact input for motor thermostat to shut down equipment if motor
overtemp condition occurs.
f. Dry contact output signals for "Run", "Start Solenoid", "Common Fault",
and "In Auto" conditions.
g. 120 VAC output power to wash water solenoid.
h. Dry contact input terminals for "Remote Run", "Motor Thermostat", and
remote station.
i. Main control power breaker with lockable, thru-door operator.
j. Elapsed run-time meter.
k. "Push -to -Test" type indicator lights for "Power On", "Forward", WFD
Fault", and "Motor Overtemp".
I. Phenolic label on outer door indicating equipment identification number
(as required by owner).
M. Push/Pull E -Stop on outside of enclosure.
D. Remote Panel:
1. A NEMA 7/9 remote push button station is required to maintain equipment
requirements and local safety codes.
2. The remote station shall be rated NEMA 7/9 and include Forward, Jog Reverse,
and E -Stop buttons. The remote station shall be mounted as close to the
equipment as safely possible and be field -wired by the electrical subcontractor to
the corresponding terminal inputs in the main control panel. Jog Reverse shall
only function for a period of one second (or less) when button is depressed to
stay within manufacturer's operational and design parameters.
E. Sequence of Operations:
1. The controls shall enable the remote push button station installed near the
Washer Compactor when in Hand mode and utilize an input signal from a remote
source when in Auto mode. Upon receiving a stop signal in Auto mode, the
Washer Compactor shall utilize an off -delay timer to allow debris to finish
depositing.
2. The Duperon® (or approved equal) speed controller fault shall be cleared by
turning off the Washer Compactor, then waiting approximately three minutes (or
time designated per current UL standards) and then turning the HOA back to the
TOWN OF SURF CITY SECTION 46 21 73-7
SURF CITY WWTF IMPROVEMENTS WASHING & COMPACTING EQUIPMENT
HIGHFILL PROJECT NO. SUR1701

desired setting. A motor overtemp fault shall clear automatically when the motor
cools to be within normal operating range.
F. Miscellaneous
The following shall be provided by the electrical contractor and are not part of the
Washer Compactor manufacturer's scope of supply:
a. Mounting stands
b. Mounting hardware
C. Field wiring and conduit
VFD rated motor cable (Belden #29502 or equal) is
recommended for all motors.
Motor cables shall be less than 80 ft. long unless specified
otherwise.
d. Junction boxes
e. Installation
2. The field wiring shall include (but not be limited to) the following connections as
applicable:
a. Incoming power supply to the main control panel
b. All required grounding of the motor and controls
C. Motor to the main control panel
d. VFD rated motor cable (Belden #29502 or equal) is recommended for all
motors.
e. Motor cables shall be less than 80 ft. long unless specified otherwise.
f. Motor thermostat to the terminal inputs in the control panel
g. Input and output signal wiring for remote start/stop as required by
plans/specs
3. Remote station contacts to the corresponding terminal inputs in the main control
panel
PART 3— EXECUTION
3.1 INSTALLATION
A. Installation shall be installed in strict conformance with the manufacturer's installation
instructions, as submitted with Shop Drawings, Operation & Maintenance Manuals and/or
any pre -installation checklists. Installation shall utilize standard torque values and be
installed securely in position and neat in appearance. Installation shall include any site
preparation tasks. Pre -installation tasks as determined by the manufacturer; such as
unloading, touch-up painting, etc. and any other installation tasks and materials such as
wiring, conduit, controls, stands, as determined by the Engineer, Owner, and/or specified
by the manufacturer. All plumbing to be completed at site following all local and national
plumbing regulations, by a qualified individual.
TOWN OF SURF CITY SECTION 46 21 73-8
SURF CITY WWTF IMPROVEMENTS WASHING & COMPACTING EQUIPMENT
HIGHFILL PROJECT NO. SUR1701

3.2 TESTING
A. After completion of installation, Contractor shall provide for testing. Testing of the
Washer Compactor shall demonstrate that the equipment is operational, and that the
equipment will wash, compact and deposit materials not to exceed 4 inches.
3.3 WARRANTY
A. A written one-year standard warranty from the date of use of the equipment shall be
provided the equipment supplier to guarantee that there shall be no defects in material or
workmanship in any item supplied.
END OF SECTION
TOWN OF SURF CITY SECTION 46 21 73-9
SURF CITY WWTF IMPROVEMENTS WASHING & COMPACTING EQUIPMENT
HIGHFILL PROJECT NO. SUR1701

SECTION 46 61 46
AUTOMATIC BACKWASH DISCFILTER EQUIPMENT
PART 1— GENERAL
1.1 SUMMARY
A. Description of Work
1. Contractor to furnish all labor, materials, equipment and incidentals required for
the automatic backwash filter system as shown on the drawings and as specified
herein, installed, tested and ready for operation.
2. The Discfilter shall consist of a central drum onto which the discs with the filter
media panels are assembled. The rotating filter drum is supported on the front by
two support wheels and at the rear by a central bearing. Each filter unit shall
include center drum, discs with filter media panels, support frame with cover,
backwash spray assembly with pump, backwash trough, drive mechanism,
automatic control system and components as specified.
3. For compatibility with the existing filter units, the new Discfilter unit shall be a sole
source procurement from Veolia Water Technologies — Kruger Division.
4. Filter shall be designed for installation as shown on the Contract Drawings and
per manufacturer's recommendations.
B. Section Includes
1. Discfilter assembly
2. Automatic cleaning system
3. Support frame
4. Control panel
1.2 REFERENCES
A. Applicable Standards:
1. ASTM -American Society for Testing and Materials
2. AISI -American Iron and Steel Institute
3. AGMA -American Gear Manufacturer's Association
4. NEMA- National Electrical Manufacturer's Association
5. NEC -National Electric Code
1.3 SUBMITTALS
A. Provide submittals in accordance with Construction Specification Section 01 33 00,
Submittal Procedures.
B. The Contractor shall furnish shop drawings, catalog data, operation and maintenance
manuals, installation instructions, parts list, layout drawings, equipment design data,
testing data and reports to show full compliance with these specifications.
TOWN OF SURF CITY SECTION 46 61 46-1
SURF CITY WWTF IMPROVEMENTS AUTOMATIC BACKWASH DISCFILTER
HIGHFILL PROJECT NO. SUR1701

1.4 QUALITY ASSURANCE
A. Comply with Construction Specification Section 01 40 00, Quality Requirements.
B. To assure unity of responsibility, center tube, discs with filter media panels, support frame
with cover, backwash spray assembly with pump, backwash trough, drive mechanism,
automatic control system and components as specified shall be furnished by Veolia
Water Technologies — Kruger Division.
C. All painting shall be per Manufacturer's standards.
1.5 PERFORMANCE REQUIREMENTS
A. The Discfilter System shall be capable of meeting the following performance
requirements.
Performance Criteria, System
Value
Peak Hour Flowrate, MGD* ( m)
3.75 (2,604)
Daily Average Flowrate, MGD* m
1.5 1,042
Maximum Influent TSS*, m /L
<15
Daily Average Influent TSS*, m /L
<10
Monthly Average Effluent TSS*, m /L
<5
Filter Design Data
Filter Pore Size, µm
10
Filter Cloth Material
Polyester
Number of Units
1
Number of Filter Discs per unit
12
Filter Disc Diameter, m
2.2
Effective Filter Surface Area per unit, ft2
470
Filter Drive Unit
Drive Motor 1 per unit
1.5 HP, 460v, 3 phase
Drive Motor Service Factor
1.3
Drive Assembly
Drive Chain and Sprocket
Backwash Cleaning System
Number of Backwash Nozzles (per Disc)
10
Backwash Pum 1 per unit
10 HP, 460v, 3 phase
Backwash Pressure, psi
110
Design Backwash Flowrate, gpm
82
'Should influent characteristics fall outside stated limits, all Performance Requirements shall be deemed met.
Average TSS concentrations are based on analysis of 24 hr composite samples. Meeting the performance
requirements is contingent on the upstream process providing influent to the filters with characteristics suitable
for filtration, i.e., particles of sufficient size and strength to allow retention on the specified 10 um media
surface.
B. The automatic backwash filter system shall be suitable for filtering domestic wastewater
after secondary treatment and clarification. Each filter shall be designed to operate on a
continuous basis and shall be designed to operate while receiving varying flows.
C. The proposed disc filtration system shall not exceed a hydraulic loading rate of 5.54
gpm/sf at peak flow.
TOWN OF SURF CITY SECTION 46 61 46-2
SURF CITY WWTF IMPROVEMENTS AUTOMATIC BACKWASH DISCFILTER
HIGHFILL PROJECT NO. SUR1701

D. Filtration system shall utilize an "inside -out' flow pattern in which influent flows by gravity
into the filter discs from the center drum. Solids are separated from the water by partially
submerged filter media. Filtration systems with fully submerged media utilizing an
"outside -in" flow pattern shall not be acceptable due to accumulation of solids in the tank,
resulting in a dirty and unsanitary work environment for the plant operation staff.
E. In order to minimize electrical and operation costs, filtration systems that employ a
"dynamic tangential filtration" design shall not be accepted.
F. The new filter unit must be compatible with the existing Discfilter units with some
components being interchangeable.
1.6 DELIVERY, STORAGE, AND HANDLING
A. Comply with Construction Specification Section 01 60 00, Product Requirements for
transporting, handling, storing, and protecting products.
1.7 WARRANTY
A. The Equipment shall materially conform to the description in this Specification and the
Contract Documentation and shall be free from defects in material and workmanship.
Manufacturer warranty periods are 66 months from delivery or 5 years from beneficial
use, whichever occurs first.
1.8 ACCEPTABLE MANUFACTURERS
A. Veolia Water Technologies — Kruger Division: No other manufacturers will be accepted.
PART 2— PRODUCTS
2.1 MATERIALS AND EQUIPMENT
A. All fabricated metal shall be minimum grade AISI 304 stainless steel, unless otherwise
stated in this specification. Filter panels shall be polyester filter cloth mounted on
stainless steel frames with integrated rubber seals. Filter disc segments shall be injection
molded ABS plastic. Discfilter designs utilizing cassettes with fiberglass molded frames
shall not be acceptable.
B. The stainless steel frame filter panels shall be completely interchangeable with the
existing Discfilter units.
C. The valves, equipment, materials of construction and controls specified under this section
supersede valves, equipment, materials of construction and controls specified elsewhere
in the contract documents. Purchased components such as gear reducers, pumps,
motors, valves, and actuators shall be provided with standard recommended
manufacturers paint, unless otherwise specified within this section.
D. The disc filtration units shall be fully preassembled and factory inspected prior to shipping
the filtration units.
E. Flange connections to be provided with AISI 304 stainless steel stub ends and loose
stainless steel flange collar rings.
F. Approximate operating weights are as follows:
HSF 2212-1 C: (Shipping Weight) 10,581 lbs.
TOWN OF SURF CITY SECTION 46 61 46-3
SURF CITY WWTF IMPROVEMENTS AUTOMATIC BACKWASH DISCFILTER
HIGHFILL PROJECT NO. SUR1701

(Full of Water) 36,596 lbs.
2.2 CENTER DRUM
A. The center drum shall be a water tight, one piece, structural welded, AISI 304 stainless
steel fabrication, open at one end to allow the influent to enter, and have openings to the
filter discs for water distribution to the filter media. The center drum shall have lubricated
roller wheels and bearings, which must be externally accessible via grease tubing and
fittings for routine lubrication.
2.3 DISC ASSEMBLY
A. The filter shall be composed of modular and removable discs. Each disc shall consist of
disc segments that can be easily mounted or dismounted as required. The segments of
one disc will be bolted to each other, and the completed disc assembly will be secured to
the center drum with stainless steel band straps and hardware. Designs utilizing disc
cassettes shall not be acceptable due to excessive amount of media that is to be
replaced when media panel(s) are torn or broken.
B. The filter panels shall be completely interchangeable with the two (2) existing Kruger
Discfilter units (Model HFS 2212-1 F). No other units will be accepted.
C. Filter panels (filter media) shall be mounted on the sides of the disc segments. The filter
panels shall consist of stainless steel frames with PET monofilament filter fabric attached
to the frames. Systems with pleated media, corrugated media, pile cloth media, or
stainless steel media shall not be acceptable. Stainless steel media shall also not be
accepted due to its susceptibility to corrosion and short life span caused by mechanical
fatigue failure. Each panel shall be equipped with an EPDM rubber gasket that is fitted to
and provided integral to the media frame to provide a watertight seal between the filter
panels and disc segments. The panels will be held in place by a top cover. Designs that
utilize stick -on adhesive compressible gaskets as seals between the media panels or
between disc cassettes shall not be accepted due to lack of durability and potential for
compromised effluent quality.
D. Nominal media pore size shall not exceed 10 microns. Filtration systems utilizing media
greater than 10 microns shall not be accepted.
E. The replacement of filter media must be possible from outside the filter tank by
unfastening two bolts, removing the retaining cap and sliding panels from filter frame.
F. Filter discs must be constructed of modular segments and each disc segment must
include a substantially open area along the length of the radial support to allow the liquid
to flow from one section to the other as the discs are rotated.
2.4 SUPPORT FRAME WITH ENCLOSED TANK AND COVER
A. The support frame and tank shall be one piece, structural welded, 304 stainless steel.
Onto the support frame shall be welded 304 stainless steel base plates for back -wash
pump, drive gear box, and center shaft bearing house. Tank thickness shall be a
minimum of 1/8" thickness. Carbon steel construction shall not be acceptable in order to
minimize maintenance efforts associated with corrosion and painting.
B. The filter shall be furnished with a GRP (Glass fiber Reinforced Plastic) lockable cover as
a means to prevent algal growth and to eliminate the presence of filter flies. One side of
the cover shall have a single access lid that can be opened to allow operator access to all
of the discs and backwash nozzles. Designs that require both sides of the filter cover(s)
to be opened in order to access filter media and/or backwash nozzles shall not be
TOWN OF SURF CITY SECTION 46 61 46-4
SURF CITY WWTF IMPROVEMENTS AUTOMATIC BACKWASH DISCFILTER
HIGHFILL PROJECT NO. SUR1701

acceptable due to operator inconvenience and the requirement for additional footprint
and access platform. The lid must include an assembly that provides the following:
mechanical advantage to assist personnel in lifting the lid, full support of the lid when in
the open position, and mechanical resistance/support when lowering the lid. This feature
is important for ease of access and improved operator safety. Designs that incorporate
removable lids, sliding lids, or propped lids (without mechanical lifting mechanism) will not
be accepted.
C. Stainless steel anchor bolts shall be provided by the Contractor.
2.5 BACKWASH CLEANING SYSTEM
A. The Discfilter shall be equipped with a single oscillating back -washing system with non -
motorized moving spray headers for efficient cleaning of the filter cloth and for reduction
of the consumption of backwash water. All panels shall receive 110 psi pressure
backwash spray. Systems with separate solids removal and backwash discharge
systems shall not be acceptable.
B. The backwash system shall be comprised of 304 stainless steel backwash spray headers
installed between the discs. The spray headers shall oscillate in an upward and
downward motion during drum rotation. The spray header oscillation shall be operated
by a cam system that is connected to the drum drive. Systems with stationary spray
headers or with separate drive motors to oscillate the spray headers shall not be
acceptable. Each header shall have flat pattern spray nozzles for each disc side. The
spray nozzles shall consist of self-cleaning nozzle tips, mounting cap for quick removal,
nozzle body and seals. The replacement of spray nozzles must be possible from outside
the filter tank. A swivel joint shall allow the spray header manifold to rotate out for nozzle
access without disassembly of the manifold or headers.
C. Each filter shall have one externally mounted low-pressure Grundfos Model CR15-5
centrifugal pump for the backwash system. The backwash pump shall be provided
integral to the Discfilter unit. The backwash pump shall be of the vertical multi -stage
design with the motor mounted directly to the top of the pump. The pump suction and
discharge fittings shall be ANSI flanged, 2 -inch fittings. The pump suction/discharge
chamber, motor stool and pump shaft coupling shall be constructed of cast iron. The
impellers, pump shaft, diffuser chambers, outer discharge sleeve and impeller seal rings
or seal ring retainers shall be constructed of stainless steel. The impellers shall be
secured directly to the pump shaft by means of a balanced cartridge type mechanical
seal assembly with Silicone/Carbide seal faces. Pump shall be equipped with a splined
shaft arrangement and EPDM rubber 0 -rings mounted in stainless steel components.
The motor shall be supplied by Grundfos integral with the pump. The motor shall be
standard efficiency rated for 10 HP, 460V, 3 phase, 60 HZ operation and shall be NEMA
C face design, Totally Enclosed Fan Cooled (TEFC) with a minimum service factor of
1.15. Filtered water shall be pumped via a 304 stainless steel suction pipe and
discharged from the pump to the backwash header piping constructed of 304 stainless
steel. A ball valve and pressure gauge shall be installed in the backwash header piping
downstream of the pump in order to regulate to the desired nozzle pressure.
D. The Discfilter shall be equipped with a backwash -collecting trough for removing solids.
The trough shall be constructed of 304 stainless steel. The trough length shall be
sufficient to capture reject water from all filter discs. The trough shall be elevated to
prevent contact with the influent stream. The reject water shall leave the trough by gravity
via the backwash outlet connection. Piping from the trough to the outlet connection shall
be 304 stainless steel connected with stainless steel shielded, flexible elastomeric PVC
couplings. The backwash outlet connection shall be a 6 -inch ANSI loose flange.
TOWN OF SURF CITY SECTION 46 61 46-5
SURF CITY WWTF IMPROVEMENTS AUTOMATIC BACKWASH DISCFILTER
HIGHFILL PROJECT NO. SUR1701

Systems with separate solids removal and backwash discharge systems shall not be
acceptable.
2.6 DRIVE MECHANISM
A. A drive assembly shall be incorporated to rotate the center tube/disc assembly during the
backwash cycles.
B. The drive assembly shall consist of a gear motor, non -corrosive lubricated chain and
sprockets. The gear motor shall be SEW Eurodrive shaft mounted helical worm gear with
integral standard AC induction motor, SEW gear motor model S77DRE90M4. The gear
ratio shall be 189.09. The motor shall be rated for 1.5 HP, 460V, 3 phase, 60HZ
operation.
C. The drive assembly shall also provide oscillation of the backwash spray headers without
the need for a separate drive motor in order to provide for efficient cleaning of the filter
media with minimal water usage and minimal energy usage. Systems with stationary
spray headers and/or separate drive motors shall not be acceptable for use.
D. Reducer design end rating shall equal or exceed AGMA requirements. Speed reducers
shall be selected for not more than AGMA class I service.
E. The drive sprockets are manufactured of carbon steel driven by a steel chain. The drive
chain must not operate in submerged or wetted environment.
2.7 FLOW BYPASS
A. A bypass chamber shall be supplied integral to the filter unit to allow for diversion of
unexpected high inlet water level without contamination of the filtered effluent. The
bypass will exit within the effluent chamber and shall be at the inlet side of the filter unit.
The effluent connection shall be a 16 -inch ANSI loose flange.
2.8 DISCFILTER SPARE PARTS
A. The following spare parts will be supplied: 5 Backwash Spray Nozzles, 2 Filter Panels.
Parts inventory shall be based in the United States.
2.9 AUTOMATED CLEANING SYSTEM (ACS)
A. The equipment manufacturer shall furnish an automatic cleaning system that applies a
chemical spray to the media in order to remove either organic or inorganic foulants. The
system must be integrated into the design of the filter system and must include spray
nozzles, chemical storage tank(s), chemical dosing pump(s) with variable speed control
(VFD), and other appurtenances as required for automated operation. The system must
allow for operations staff to simply engage the system and initiate operation at the unit.
The system must be initiated to begin the cleaning cycle from the HMI and/or selector
switches located on the front of the filter unit control panel. Once initiated, the system
must provide for media cleaning while being fully automated from the control panel.
System must provide spray application of chemical to the filter media and may not
depend on use of "soak" or "bath" techniques for media cleaning. System must allow
cleaning to be performed without requiring filter inlet and effluent valves to be closed.
Equipment manufacturer must demonstrate that the system has been designed and
implemented in previous Discfilter installations for chemical cleaning. The automatic
cleaning system and controls shall be provided by the Discfilter equipment supplier.
B. The automatic cleaning system shall be compatible with the existing Discfilter units.
TOWN OF SURF CITY SECTION 46 61 46-6
SURF CITY WWTF IMPROVEMENTS AUTOMATIC BACKWASH DISCFILTER
HIGHFILL PROJECT NO. SUR1701

2.10 CONTROL PANEL AND OPERATION
A. The Discfilter operation shall be managed by an automated control system. The
automatic control will be designed around an Allen Bradley Micro850 Programmable
Logic Controller.
B. The control system is an integral part of the Discfilter system and shall be provided in a
UL labeled, NEMA 4X 304 Stainless Steel enclosure. Each Discfilter unit shall include a
control system which shall consist of a programmable controller, fused main disconnect,
control transformer, branch circuit breakers, IEC motor starter/protector, hand -off -
automatic switches, strip heater, and liquid level sensor relay for initiating backwash. The
power feed to the control panel shall be 480VAC 60Hz 3 phase, control voltage shall be
120VAC 60 Hz 1 phase.
C. The control panel enclosure shall meet the following criteria, 304 Stainless Steel, seams
continuously welded and ground smooth, seamless foam -in-place gasket for watertight
dust -tight seal, door opens 180°, quarter turn latches opened or closed using a screw
driver, and NEMA Type 4X, UL Listed 4X. Saginaw SCE42EL3612SSLP or approved
equal.
D. The main disconnect shall be enclosed in the control panel, with a handle mechanism
extending through the door. The main disconnect shall be a fused disconnect rated for 30
Amps 3-Pole.The main disconnect shall be composed of three primary components; 30A
fused disconnect, extension shaft, NEMA 4X operating handle. Square D 9421 NC3
fused disconnect, 9421 NW2 disconnect handle and 9421 NS36 disconnect shaft or
approved equal.
E. Each filter shall be equipped with an adjustable water level sensor located in the influent
chamber for the purpose of backwash initiation. The high level sensor shall be a height
adjustable PVC encapsulated 316 SS Rod with a diameter of 5/16" and length of 12", and
shall include a PVC encapsulated copper conductor with control wire connected at top of
probe. The installing Contractor is to provide wiring and conduit to connect the level
sensor to a liquid level relay located in the Discfilter Control Panel. The liquid level relay
is activated when the level sensor comes in contact with water in the influent chamber.
The liquid level relay for backwash shall be SSAC LLC44A5A with relay base or
approved equal.
F. Each filter unit will be supplied with a high high level sensor. The device used for the
high high level sensor will be the same part(s) and number used for the high level sensor.
The high high level sensor will be mounted in such a way as to insure that the device
indicates when the water reaches a height above the backwash level sensor and has
entered a high level scenario. When the high high level sensor is activated, it will activate
a relay inside the control cabinet and a pilot light on the front of the control panel will
illuminate. The pilot light will be labeled "Discfilter High High Level". The high high level
relay will have a spare set of normally open dry contacts available for monitoring. The
liquid level relay shall be SSAC LLC44A5A with relay base or approved equal.
G. Each filter unit will be supplied with a BW pump dry run Low level sensor shall be a
height adjustable PVC encapsulated 316 SS Rod with a diameter of 5/16" and length of
12", and shall include a PVC encapsulated copper conductor with control wire connected
at top of probe. The installing Contractor is to provide wiring and conduit to connect the
level sensor to a liquid level relay located in the Discfilter Control Panel. When the sensor
is activated, it will activate a relay inside the control cabinet to prevent running the pump.
The liquid level relay for backwash shall be SSAC LLC44A5A with relay base or
approved equal.
TOWN OF SURF CITY SECTION 46 61 46-7
SURF CITY WWTF IMPROVEMENTS AUTOMATIC BACKWASH DISCFILTER
HIGHFILL PROJECT NO. SUR1701

H. Field wiring terminal blocks for the Discfilter Control Panel will be din rail mountable,
individually numbered, rated for 600 Volts 30 Amps. The field wiring terminal blocks shall
be Phoenix UTTB4 3044814 or approved equal.
I. Motor wiring terminal blocks for the Discfilter Control Panel will be din rail mountable,
individually numbered, rated for 600 Volts 65 Amps. The field wiring terminal blocks shall
be Phoenix UT10 3044160 or approved equal.
A motor starter located in the Discfilter Control Panel will manage the start/stop of the
Backwash Pump motor. The motor starter will be sized appropriately to match the
requirements of the Backwash Pump motor. The motor starter will be an IEC starter,
rated 0.1 — 25Amps @ 460VAC 3 phase, 10HP @ 460VAC 3 phase, rotary handle
operator, visible trip indication, protection by overload, short circuit, under voltage and
shunt. The motor starter will be equipped with auxiliary contacts for monitoring and
control. The IEC motor starter shall be Square D TeSys U or approved equal.
K. A VFD located in the Discfilter Control Panel will manage the start/stop of the Filter Drum
motor. The VFD will be sized appropriately to match the requirements of the Filter Drum
motor. The VFD will be equipped with an integral keypad display for VFD interface and
configuration, use sensorless flux vector technology, use with 3-phase asynchronous
motors, monitoring and control inputs and outputs, motor and drive protection. The VFD
will not require input/output filters or harmonic testing. The VFD will be hardwired for
control and monitoring and will not require any communication protocols such as
Ethernet, DeviceNet, and Modbus. The VFD shall be Square D Altivar 312 or approved
equal.
L. The control panel shall have external pilot lights mounted on the door indicating run
status of the filter unit and backwash pump. The pilot lights will be NEMA 4X, 120VAC,
standard (no push to test) and 30mm. The pilot lights shall be Square D 9001 SKP1x31
or approved equal.
M. The control panel shall have external selector switches (Hand -Off -Automatic). The
selector switches will be NEMA 4X, 30mm, non -illuminated, manual return and equipped
with contact blocks. The selector switches shall be Square D 9001 SKS43BH2 or
approved equal. The control panel selector switches will allow the drum drive and
backwash motor to be operated in Hand mode.
N. The completed control panel shall be UL labeled per UL508A. The completed control
panel will be factory tested and configured.
O. The Programmable Controller will perform logic, timing, counting and real time clock
operations. The Programmable Controller will be programmed using software to allow
configuration of a downloadable program featuring input instructions, output instructions,
timer instructions, counter instructions and counter instructions. The Programmable
Controller will be equipped with a embedded 10/100 Base —T Ethernet/IP Port as well as
USB programming port. The Programmable Controller will be equipped with a minimum
fourteen 14 Digital Inputs (120VAC) and ten (10) Relay Outputs, additional 1/0 can be
added via 1/0 expansion modules. The Controller shall be an Allen Bradley Micro850
2080-LC50-24AWB or approved equal.
P. The Control System will be supplied with one Operator Interface. The Operator Interface
will be capable of communicating with the Programmable Controller. The Operator
Interface will be capable of displaying text and graphics, allow operator setpoint entry,
and provide system status display. The Operator Interface will be a color touchscreen
display, minimum four (4) inch diagonal, 10/100 Base -T Ethernet Port and mount to the
panel front. The Operator Interface will be Allen Bradley 2711 R-TxT or approved equal.
TOWN OF SURF CITY SECTION 46 61 46-8
SURF CITY WWTF IMPROVEMENTS AUTOMATIC BACKWASH DISCFILTER
HIGHFILL PROJECT NO. SUR1701

Q. Control system will also allow for continuous back washing in HAND mode.
R. The Contractor is responsible for providing Interconnecting wiring and/or conduit between
the supplied control panel and Discfilter equipment. The Contractor shall provide any
junction or pull boxes or any other like device needed to supply the interconnecting
wiring.
S. All field connections/terminations to the supplied control panels, the Discfilter equipment
and between the Discfilter and supplied control panels shall be the responsibility of the
Contractor.
PART 3— EXECUTION
3.1 GENERAL
A. Contractor shall install the Discfilter system per the Equipment Manufacturer's directions
and the Drawings. The Contractor will provide all supports and anchoring required to
install the Discfilter unit. The plumbing/interconnecting piping, electrical connections,
grating and handrails shall be provided by the Contractor as detailed on the drawings and
specifications including winterization such as piping insulation or heat tracing/heat tape.
The Equipment Manufacturer will provide adequate protection of the equipment for
shipment to the project site. Installation instructions will be provided that specifically
outline installation of the Discfilter. Lifting instructions will be provided to assist the
Contractor.
3.2 FIELD SERVICES
A. The Equipment Manufacturer shall furnish the services of a factory -trained representative
based in the United States and employed by the manufacturer, for a minimum of four (4)
working days and two (2) separate trips. These two trips shall consist of one (1) trip to
monitor the installation and one (1) trip for start-up and instruction of plant operating
personnel. The Contractor will provide to the Equipment Manufacturer a minimum prior
notice of three (3) weeks in order to schedule these services.
3.3 EXTENDED FIELD SERVICES
A. The Equipment Manufacturer shall furnish the services of a factory -trained representative
based in the United States and employed by the manufacturer, once every six (6) months
for five (5) years from the time of the start-up of the Discfilter Unit: These trips shall
consist of a review of performance and operation (including the two (2) existing Discfilter
units), performing routine maintenance, and providing a report including components that
show wear and tear. The Owner will provide to the Equipment Manufacturer a minimum
prior notice of three (3) weeks in order to schedule these field quality control visits.
END OF SECTION
TOWN OF SURF CITY SECTION 46 61 46-9
SURF CITY WWTF IMPROVEMENTS AUTOMATIC BACKWASH DISCFILTER
HIGHFILL PROJECT NO. SUR1701

Water Resources
ENVIRONMENTAL QUALITY
January 11, 2018
LAURENCE C. BERGMAN — TOWN MANAGER
TOWN OF SURF CITY
POST OFFICE BOX 2475
SURF CITY, NORTH CAROLINA 28445
Dear Mr. Bergman:
ROY COOPER
Governor
MICHAEL S. REGAN
Secretary
LINDA CULPEPPER
Interim Director
Subject: Permit No. WQ0000795
Surf City WWTF
Wastewater Irrigation System
Onslow County
In accordance with your permit minor modification request received August 8, 2017, and
subsequent additional information received November 17, 2017, we are forwarding herewith Permit No.
W00000795 dated January 11, 2018, to the Town of Surf City for the continued operation of the subject
wastewater treatment and irrigation facilities.
The modifications to the subject permit are as follows: the seasonal loading rate restrictions to the
Sarge Martin fields have been removed.
This permit shall be effective from the date of issuance until February 28, 2022, shall void Permit
No. WQ0000795 issued March 28, 2017, and shall be subject to the conditions and limitations as specified
therein. Please pay particular attention to the monitoring requirements listed in Attachments A, B and C
for they may differ from the previous permit issuance. Failure to establish an adequate system for collecting
and maintaining the required operational information shall result in future compliance problems.
Please note the following permit conditions have been removed since the last permit issuance
dated March 28,2017:
Old Condition I.I. —Documentation that the force main has been permanently disconnected
has been provided.
Please note the following Attachment has been modified since the last permit issuance dated
March 28,2017:
➢ Attachment B — The seasonal limits for the Sarge Martin fields have been combined into one
yearly maximum.
•"—Nothing Compares'
State of North Carolina I Environmental Quality I Water Resources J Water Quality Permitting I Non -Discharge Permitting
1617 Mail Service Center I Raleigh, North Carolina 27699-1617
919-807-6332

Mr. Laurence C. Bergman
January 11, 2018
Page 2 of 2
If any parts, requirements or limitations contained in this permit are unacceptable, the Permittee
has the right to request an adjudicatory hearing upon written request within 30 days following receipt of
this permit. This request shall 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 at 6714 Mail Service
Center, Raleigh, NC 27699-6714. Unless such demands are made, this permit shall be final and binding.
If you need additional information concerning this permit, please contact Tessa Monday at (919)
807-6302 or tessa.monday&ncdenr.gov.
Sincerely,
Rmda Culpepper, Interim Director
" Division of Water Resources
cc: Onslow County Health Department (Electronic Copy)
Wilmington Regional Office, Water Quality Regional Operations Section (Electronic Copy)
Gus Simmons, Jr., PE — Cavanaugh (Electronic Copy)
Digital Permit Archive (Electronic Copy)
Central Files

NORTH CAROLINA
ENVIRONMENTAL MANAGEMENT COMMISSION
DEPARTMENT OF ENVIRONMENTAL QUALITY
RALEIGH
WASTEWATER 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 ®f Surf City
Onslow County
FOR THE
operation of a 767,800 gallon per day (GPD) wastewater treatment and irrigation facility consisting of the:
continued operation of a 1,500,000 GP wastewater treatment system permitted on July 23, 2007 consisting
of: a 6 millimeter (mm) perforated a '- RarWI a screenings washer and comp c � g
b , a rut removal,
washing and dewatering system; two 210,038 gallon sequencing batch reactors (SBRs) with a jet aeration
system served by two 362 cubic feet per minute (CPM) blowers and two 1,831 gallon per minute (GPM)
centrifugal dry pit pumps for jet mixing; three 430,848 gallon SBRs with a jet aeration system served by
two 709 CFM blowers and three 3,661 GPM centrifugal dry pit pumps for jet mixing; five floating solids
excluding decanters; a 538,560 gallon aerobic digester with a jet aeration system served by a 1,064 CFM
blower and a 5,126 GPM centrifugal dry pit pump for jet mixing, a solids excluding decanter, and two 120
GPM digester decant pumps; a 1.52 MG (million gallon) synthetically lined post -equalization basin; a post -
equalization transfer pump station with dual 2,090 GPM pumps; Wetertiary disk filter units with 12
polyester filter disks having 448 square feet (ft) of filter surface area per unit; dual 79 GPM filter backwash
pumps; a pump station with dual 147 GPM pumps for transferring filter backwash and laboratory waste
back to the headworks; a two -bank ultraviolet (UV) disinfection system consisting of fourteen modules
with 8 lamps per each module; an effluent pump station with dual 2,083 GPM transfer pumps;
approximately 48,400 linear feet (LF) of 18 inch PVC force main; a flow meter; and all associated piping,
valves, controls, and appurtenances; the
continued operation of a 300,000 GPD wastewater irrigation system at the Juniper Swamp site permitted
on May 2, 2011 consisting of: an irrigation pump station with dual 3,087 GPM vertical turbine pumps;
approximately 120.32 acres of irrigation fields; a 100 MG clay lined wet weather storage pond with a
geometric mean liner hydraulic conductivity of 1.5 x 10' centimeters per second (cm/sec); and all
associated piping, valves, controls, and appurtenances; and the
continued operation of a 467,700 GPD wastewater irrigation system at the Sarge Martin site permitted on
September 24, 1993 consisting of: four clay -lined storage ponds with approximately 5.2 MG total storage
volume; and approximately 88.5 acres of irrigation fields; and all associated piping, valves, controls, and
appurtenances
WQ0000795 Version 4.1 Shell Version 171103 Page 1 of 9

I.
to serve the Surf City W WTF, with no discharge of wastes to surface waters, pursuant to the application
received August 8, 2017, and subsequent additional information received by the Division of Water
Resources, and in conformity with the project plans, specifications, and other supporting data subsequently
filed and approved by the Department of Environmental Quality and considered a part of this permit.
This permit shall be effective from the date of issuance until February 28, 2022, shall void Permit No.
WQ0000795 issued March 28, 2017, and shall be subject to the following specified conditions and
limitations:
1. No later than six months prior to the expiration of this permit, the Permittee shall request renewal of
this permit on official Division forms. Upon receipt of the request, the Division will review the
adequacy of the facilities described therein, and if warranted, will renew the permit for such period of
time and under such conditions and limitations as it may deem appropriate. Please note Rule 15A
NCAC 02T .0105(d) requires an updated site map to be submitted with the permit renewal application.
[15A NCAC 02T .0105(d), 02T .0106, 02T .0109, 02T .0115(c)]
II. PERFORMANCE STANDARDS
The subject non -discharge facilities shall be effectively maintained and operated at all times so there is
no discharge to surface waters, nor any contravention of groundwater or surface water standards. In
the event the facilities fail to perform satisfactorily, including the creation of nuisance conditions due
to improper operation and maintenance, or failure of the irrigation areas to adequately assimilate the
effluent, the Permittee shall take immediate corrective actions including Division required actions, such
as the construction of additional or replacement wastewater treatment or irrigation facilities. [G.S. 143-
215.1, 143-213.3(a)]
2. This permit shall not relieve the Permittee of their responsibility for damages to groundwater or surface
water resulting from the operation of this facility. [ 15A NCAC 02B .0200, 02L .0100]
3. All wells constructed for purposes of groundwater monitoring shall be constructed in accordance with
15A NCAC 02C .0108 (Standards of Construction for Wells Other than Water Supply), and any other
jurisdictional laws and regulations pertaining to well construction. [15A NCAC 02C .0108]
4. Effluent quality shall not exceed the limitations specified in Attachment A. [15A NCAC 02T
.0108(b)(1), 02T .0505(b)]
5. Application rates, whether hydraulic, nutrient or other pollutant, shall not exceed those specified in
Attachment B. [15A NCAC 02T .0505(c), 02T .0505(n)]
6. This disposal system was individually permitted on or after December 30, 1983; therefore, the
compliance boundary is established at either 250 feet from the effluent disposal area, or 50 feet within
the property boundary, whichever is closest to the effluent disposal area. An exceedance of
groundwater standards at or beyond the compliance boundary is subject to remediation action according
to 15A NCAC 02L .0106(d)(2) as well as enforcement actions in accordance with North Carolina
General Statute 143-215.6A through 143-215.6C. [15A NCAC 02L .0106(d)(2), 02L .0107(b)]
7. In accordance with 15A NCAC 02L .0108, the review boundary is established midway between the
compliance boundary and the effluent disposal area. Any exceedance of groundwater standards at the
review boundary shall require action in accordance with 15A NCAC 02L .0106. [15A NCAC 02L
.0106, 02L .0108]
8. The Permittee shall apply for a permit modification to establish a new compliance boundary prior to
any sale or transfer of property affecting a compliance boundary. [15A NCAC 02L .0107(c)]
W00000795 Version 4.1 Shell Version 171103 Page 2 of 9

9. In accordance with 15A NCAC 02L .0107(d), no wells, excluding Division approved monitoring wells,
shall be constructed within the compliance boundary except as provided for in 15A NCAC 02L
.0107(g). [15A NCAC 02L .0107]
10. Except as provided for in 15A NCAC 02L .0107(g), the Permittee shall ensure any landowner who is
not the Permittee and owns land within the compliance boundary shall execute and file with the Onslow
County Register of Deeds an easement running with the land containing the following items:
a. A notice of the permit and number or other description as allowed in 15A NCAC 02L .0107(f)(1);
b. Prohibits construction and operation of water supply wells within the compliance boundary; and
c. Reserves the right of the Permittee or the State to enter the property within the compliance boundary
for purposes related to the permit.
The Director may terminate the easement when its purpose has been fulfilled or is no longer needed.
[ 15A NCAC 02L .0107(f)]
11. The facilities permitted herein shall be constructed according to the following setbacks:
a. The setbacks for the Juniper Swamp irrigation sites (i.e., Field A — H) permitted under 15A NCAC
02T.0500 shall be as follows (all distances in feet):
i. Any habitable residence or place of public assembly under separate ownership:
400
ii. Any habitable residence or place of public assembly owned by the Permittee:
200
iii. Any private or public water supply source:
100
iv. Surface waters:
100
v. Groundwater lowering ditches:
100
vi. Surface water diversions:
25
vii. Any well with exception of monitoring wells:
100
viii. Any property line:
150
ix. Top of slope of embankments or cuts of two feet or more in vertical height:
15
x. Any water line from a disposal system:
10
xi. Subsurface groundwater lowering drainage systems:
100
xii. Any swimming pool:
100
xiii. Public right of way:
50
xiv. Nitrification field:
20
xv. Any building foundation or basement:
15
[15A NCAC 02T .0506(a)]
b. The setbacks for the Sarge Martin irrigation sites (i.e., Fields 01 — 16) permitted under 15A NCAC
02H.0200 shall be as follows (all distances in feet):
i. Any habitable residence or place of public assembly under separate ownership:
ii. Surface waters:
iii. Any well with exception of monitoring wells:
iv. Any property line:
v. Public right of way:
[15A NCAC 02H.02190)]
400
100
100
150
50
WQ0000795 Version 4.1 Shell Version 171103 Page 3 of 9

c. The setbacks for storage and treatment units permitted under 15A NCAC 02H .0200 shall be as
follows (all distances in feet):
i. Any habitable residence or place of public assembly under separate ownership: 100
ii. Any private or public water supply source: 100
iii. Surface waters: 50
iv. Any well with exception of monitoring wells: 100
v. Any property line: 50
[15A NCAC 02T .0506(b)]
III. OPERATION AND MAINTENANCE REQUIREMENTS
1. The facilities shall be properly maintained and operated at all times. 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. The Permittee shall maintain an Operation and Maintenance Plan,
which at a minimum shall include operational functions, maintenance schedules, safety measures and
a spill response plan. [15A NCAC 02T .0507]
2. Upon the Water Pollution Control System Operators Certification Commission's (WPCSOCC)
classification of the subject non -discharge facilities, in accordance with 15A NCAC 08G .0200 the
Permittee shall designate and employ a certified operator in responsible charge (ORC) and one or more
certified operator(s) as back-up ORC(s). The ORC or their back-up shall visit the facilities in
accordance with 15A NCAC 08G .0200, and shall comply with all other conditions specified in the
previously cited rules. [15A NCAC 02T .0117]
3. A suitable year round vegetative cover shall be maintained at all times, such that crop health is
optimized, allows for even distribution of effluent and allows inspection of the irrigation system. [ 15A
NCAC 02T .0108(b)(1)]
4. Adequate measures shall be taken to prevent effluent ponding in or runoff from the irrigation sites listed
in Attachment B. [15A NCAC 02T .0108(b)(1)]
5. Irrigation shall not be performed during inclement weather or when the ground is in a condition that
will cause ponding or runoff. [15A NCAC 02T .0108(b)(1)]
6. All irrigation equipment shall be tested and calibrated at least once per permit cycle. Calibration records
shall be maintained at the facility for a period of no less than five years, and shall be made available to
the Division upon request. [15A NCAC 02T .0108(b)(1)]
7. Only effluent from the Surf City WWTF shall be irrigated on the sites listed in Attachment B. [G.S.
143-215.1]
8. No automobiles or machinery shall be allowed on the irrigation sites except during equipment
installation or while maintenance is being performed. [15A NCAC 02T .0108(b)(1)]
9. Public access to the irrigation sites and wastewater treatment facilities shall be prohibited. [ 15A NCAC
02T .0505(q)]
10. The residuals generated from the wastewater treatment facilities shall be disposed or utilized in
accordance with 15A NCAC 02T .1100. The Permittee shall maintain a residual management plan
pursuant to 15A NCAC 02T.0508 [15A NCAC 02T .0508, 02T .1100]
11. Diversion or bypassing of untreated or partially treated wastewater from the treatment facilities is
prohibited. [15A NCAC 02T .05050)]
W00000795 Version 4.1 Shell Version 171103 Page 4 of 9

12. Freeboard in the 1.52 MG (MG) post -equalization basin, the 100 MG clay lined wet weather storage
pond, and the four ponds with 5.2 MG of storage shall not be less than two feet at any time. [15A
NCAC 02T .0505(d)]
13. Gauges to monitor waste levels in the 1.52 MG (MG) post -equalization basin, the 100 MG clay lined
wet weather storage pond, and the four ponds with 5.2 MG of storage shall be provided. These gauges
shall have readily visible permanent markings, at inch or tenth of a foot increments, indicating the
following elevations: maximum liquid level at the top of the temporary liquid storage volume;
minimum liquid level at the bottom of the temporary liquid storage volume; and the lowest point on
top of the dam. [15A NCAC 02T .0108(b)(1)]
14. A protective vegetative cover shall be established and maintained on all earthen embankments (i.e.,
outside toe of embankment to maximum allowable temporary storage elevation on the inside of the
embankment), 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 dikes or embankments. Earthen
embankment areas shall be kept mowed or otherwise controlled and accessible. [15A NCAC 02T
.0108(b)(1)]
W. MONITORING AND REPORTING REQUIREMENTS
1. Any Division required monitoring (including groundwater, plant tissue, soil and surface water analyses)
necessary to ensure groundwater and surface water protection shall be established, and an acceptable
sampling reporting schedule shall be followed. [15A NCAC 02T .0108(c)]
2. A Division certified laboratory shall conduct all laboratory analyses for the required effluent,
groundwater or surface water parameters. [15A NCAC 02H .0800]
3. Flow through the treatment facility shall be continuously monitored, and daily flow values shall be
reported on Form NDMR.
The Permittee shall install and maintain an appropriate flow measurement device to ensure the accuracy
and reliability of flow measurement consistent with accepted engineering and scientific practices.
Selected flow measurement devices shall be capable of measuring flows with a maximum deviation of
less than ten percent from true flow; accurately calibrated at a minimum of once per year; and
maintained to ensure the accuracy of measurements is consistent with the selected device's accepted
capability. The Permittee shall maintain records of flow measurement device calibration on file for a
period of at least five years. At a minimum, documentation shall include:
a. Date of flow measurement device calibration,
b. Name of person performing calibration, and
c. Percent from true flow.
[15A NCAC 02T .0105(k)]
4. The Permittee shall monitor the effluent from the subject facilities at the frequencies and locations for
the parameters specified in Attachment A. [15A NCAC 02T .0108(c)]
WQ0000795 Version 4.1 Shell Version 171103 Page 5 of 9

5. The Permittee shall maintain adequate records tracking the amount of effluent irrigated. At a minimum,
these records shall include the following information for each irrigation site listed in Attachment B:
a. Date of irrigation;
b. Volume of effluent irrigated;
c. Site irrigated;
d. Length of time site is irrigated;
e. Continuous weekly, monthly, and year-to-date hydraulic (inches/acre) loadings;
£ Continuous monthly and year-to-date loadings for any non -hydraulic parameter specifically
limited in Attachment B;
g. Weather conditions; and
h. Maintenance of cover crops.
[15A NCAC 02T .0108(c)]
6. Freeboard (i.e, waste level to the lowest embankment elevation) in the 1.52 MG (MG) post -
equalization basin, the 100 MG clay lined wet weather storage pond, and the four ponds with 5.2 MG
of storage shall be measured to the nearest inch or tenth of a foot, and recorded weekly. Weekly
freeboard records shall be maintained at the facility for a period of no less than five years, and shall be
made available to the Division upon request. [15A NCAC 02T .0108(c)]
Three copies of all monitoring data (as specified in Conditions IV.3. and IVA.) on Form NDMR for
each PPI and three copies of all operation and disposal records (as specified in Conditions N.5. and
IV.6.) on Form NDAR-1 for every site in Attachment B shall be submitted on or before the last day of
the following month. If no activities occurred during the monitoring month, monitoring reports are still
required documenting the absence of the activity. All information shall be submitted to the following
address:
Division of Water Resources
Information Processing Unit
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
[15A NCAC 02T .0105(1)]
8. Pursuant to § 143-2153C., the Permittee shall provide to its users and the Division of Water Resources
an annual report summarizing the performance of the wastewater treatment and irrigation facility and
the extent to which the facility has violated this permit, or federal or State laws, regulations, or rules
related to the protection of water quality. This report shall be prepared on either a calendar or fiscal
year basis and shall be provided no later than 60 days after the end of the calendar or fiscal year. Two
copies of the annual report provided to the Permittee's users shall be submitted to:
Division of Water Resources
Water Quality Permitting Section
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
[G.S. 143-215.1C]
9. A record shall be maintained of all residuals removed from this facility. This record shall be maintained
at the facility for a period of no less than five years, and shall be made available to the Division upon
request. At a minimum, this record shall include:
a. Name of the residuals hauler;
b. Non -Discharge permit number authorizing the residuals disposal, or a letter from a municipality
agreeing to accept the residuals;
c. Date the residuals were hauled; and
d. Volume of residuals removed.
[15A NCAC 02T .0108(b)(1)]
W00000795 Version 4.1 Shell Version 171103 Page 6 of 9

10. A maintenance log shall be maintained at this facility. This log shall be maintained at the facility for a
period of no less than five years, and shall be made available to the Division upon request. At a
minimum, this log shall include:
a. Date of calibration of flow measurement device;
b. Visual observations of the plant and plant site; and
c. Record of preventative maintenance (e.g., changing of equipment, adjustments, testing, inspections
and cleanings, etc.).
[ 15A NCAC 02T.0 I 08(b)(1)]
11. Monitoring wells and piezometers shall be sampled at the frequencies and for the parameters specified
in Attachment C. All mapping, well construction forms, well abandonment forms and monitoring data
shall refer to the permit number and the well nomenclature as provided in Attachment C and Fi ug re 1.
[15A NCAC 02T .0105(m)]
12. Two copies of the monitoring well sampling and analysis results shall be submitted on a Compliance
Monitoring Form (GW -59), along with attached copies of laboratory analyses, on or before the last
working day of the month following the sampling month. The Compliance Monitoring Form (GW -59)
shall include this permit number, the appropriate well identification number, and one GW -59a
certification form shall be submitted with each set of sampling results. All information shall be
submitted to the following address:
Division of Water Resources
Information Processing Unit
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
[ 15A NCAC 02T .0105(m)]
13. An annual representative soils analysis (i.e., Standard Soil Fertility Analysis) shall be conducted on
each irrigation site listed in Attachment B. These results shall be maintained at the facility for a period
of no less than five years, and shall be made available to the Division upon request. At a minimum, the
Standard Soil Fertility Analysis shall include the following parameters:
Acidity
Exchangeable Sodium Percentage
Phosphorus
Base Saturation (by calculation)
Magnesium
Potassium
Calcium
Manganese
Sodium
Cation Exchange Capacity
Percent Humic Matter
Zinc
Copper
pH
[ 15A NCAC 02T .0108(c)]
W00000795 Version 4.1 Shell Version 171103 Page 7 of 9

V.
Vl.
14. Noncompliance Notification:
The Permittee shall report by telephone to the Wilmington Regional Office, telephone number (9 10)
796-7215, as soon asosn sible, 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. Treatment of wastes abnormal in quantity or characteristic, including the known passage of a
hazardous substance.
b. Any process unit failure (e.g., mechanical, electrical, etc.), due to known or unknown reasons,
rendering the facility incapable of adequate wastewater treatment.
c. Any facility failure resulting in a by-pass directly to receiving surface waters.
d. Any time self-monitoring indicates the facility has gone out of compliance with its permit
limitations.
e. Ponding in or runoff from the irrigation sites.
Any emergency requiring immediate reporting (e.g, discharges to surface waters, imminent failure of
a storage structure, etc.) outside normal business hours shall be reported to the Division's Emergency
Response personnel at telephone number [phone],[phone], or [phone]. Persons
reporting such occurrences by telephone shall also file a written report in letter form within five days
following first knowledge of the occurrence. This report shall outline the actions taken or proposed to
betaken to ensure the problem does not recur. [15A NCAC 02T .0105(1), 02T .0108(b)(1)]
1. The Permittee shall provide adequate inspection and maintenance to ensure proper operation of the
wastewater treatment and irrigation facilities. [15A NCAC 02T .0108(b)]
2. The Permittee or their designee shall inspect the wastewater treatment and irrigation facilities to prevent
malfunctions, facility deterioration and operator errors resulting in discharges, which may cause the
release of wastes to the environment, a threat to human health or a public nuisance. The Permittee shall
maintain an inspection log that includes, at a minimum, the date and time of inspection, observations
made, and any maintenance, repairs, or corrective actions taken. The Permittee shall maintain this
inspection log for a period of five years from the date of the inspection, and this log shall be made
available to the Division upon request. [15A NCAC 02T .0108(b)]
3. Any duly authorized Division representative may, upon presentation of credentials, enter and inspect
any property, premises or place on or related to the wastewater treatment and irrigation facilities
permittedherein at any reasonable time for the purpose of determining compliance with this permit;
may inspect or copy any records required to be maintained under the terms and conditions of this permit,
and may collect groundwater, surface water or leachate samples. [G.S. 143-21.5.3(a)(2)]
1. Failure to comply with the conditions and limitations contained herein may subject the Permittee to an
enforcement action by the Division in accordance with North Carolina General Statutes 143-215.6A to
143-215.6C. [G.S. 143-215.6A to 143-215.6C]
2. This permit shall become voidable if the permitted facilities are not constructed in accordance with the
conditions of this permit, the Division approved plans and specifications, and other supporting
documentation. [ 15A NCAC 02T .0110]
3. This permit is effective only with respect to the nature and volume of wastes described in the permit
application, Division approved plans and specifications, and other supporting documentation. No
variances to applicable rules governing the construction or operation of the permitted facilities are
granted, unless specifically requested and approved in this permit pursuant to 15A NCAC 02T .0105(n).
[G.S. 143-21.5.1]
W00000795 Version 4.1 Shell Version 171103 Page 8 of 9

4. 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 jurisdictional government agencies
(e.g., local, state, and federal). Of particular concern to the Division are applicable river buffer rules in
15A NCAC 02B .0200; erosion and sedimentation control requirements in 15A NCAC Chapter 4 and
under General Permit NCGO10000; any requirements pertaining to wetlands under 15A NCAC 02B
.0200 and 02H .0500; and documentation of compliance with Article 21 Part 6 of Chapter 143 of the
General Statutes. [15A NCAC 02T .0105(c)(6)]
In the event the permitted facilities change ownership or the Permittee changes their name, a formal
permit modification request shall be submitted to the Division. This request shall be made on official
Division forms, and shall include appropriate property ownership documentation and other supporting
documentation as necessary. The Permittee of record shall remain fully responsible for maintaining
and operating the facilities permitted herein until a permit is issued to the new owner. [15A NCAC
02T.0104]
6. The Permittee shall retain a set of Division approved plans and specifications for the life of the facilities
permitted herein. [15ANCAC 02T .0108(b)(1)]
7. The Permittee shall maintain this permit until all permitted facilities herein are properly closed or
permitted under another permit issued by the appropriate permitting authority. [15A NCAC 02T
.01050)]
8. This permit is subject to revocation or unilateral modification upon 60 days notice from the Division
Director, in whole or part for the requirements listed in 15A NCAC 02T.01 10. [15A NCAC 02T .0110]
9. Unless the Division Director grants a variance, expansion of the permitted facilities contained herein
shall not be granted if the Permittee exemplifies any of the criteria in 15A NCAC 02T .0120(b). [15A
NCAC 02T.0120]
10. The Permittee shall pay the annual fee within 30 days after being billed by the Division. Failure to pay
the annual fee accordingly shall be cause for the Division to revoke this permit. [15A NCAC 02T
.0105(e)(3)]
Permit issued this the 1 I' day of January 2018
NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
Z��� Ca
;�Lmda Culpepper, Interim Director
V Division of Water Resources l
By Authority of the Environmental Mafia ement Commission
Permit Number WQ0000795
WO0000795 Version 4.1 Shell Version 171103 Page 9 of 9

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