NC0020451_Application (ATC)_20200722

WN p'
Tom Hartman,Mayor ��ssFFF Russell W.Barr,Ill,Alderman
Brantley Price,Town Manager ^�I�o Calvin Green,Alderman
Bradley Jordan,Chief of Police 3 Z, (% Crystal C. Miller,Alderwoman
lfi rie r John K.Reeves,Alderman
John B."Jak"Reeves,Town Attorney �1*�ititioi''
Stephen Shoemaker,Alderman
Town of'West Jefferson
Esta6lisfed 1915
" wsperity, growth,Achievement"
July 15,2020
RECEIVED
NC Department of Environmental Quality
Jll
Q
L2
NC Division of Water Resources 2 1010
512 N. Salisbury Street,9th Floor NODE
Raleigh,NC 27604 /©WR/NPDES
Re: Application for Authorization to Construct
Aspirating Aeratords/Mixers
West Jefferson Wastewater Treatment Plant
NC Division of Water Resources:
Please accept this letter as the formal request for the Authorization to Construct for the new Aspirating
Aerators/Mixers at the West Jefferson Wastewater Treatment Plant,NPDES Permit No.NC0020451. The project
involves the replacement of the existing Orbal Rotors in the inner basin of the WWTP Oxidation Ditch. The
existing rotors do not provide sufficient mixing and oxygen transfer. Additionally,the pillow block bearings on the
existing rotors wear out annually and have to be replaced at a significant cost. The proposed aspirating
aerators/mixers will provide both better mixing and oxygen transfer without the need for any pillow block bearings.
The Town of West Jefferson proposes to directly purchase the new rotors and hire a local contractor to install them.
The overall cost of the project is estimated to be approximately$75,000. The Town will use fund balance to build
this project. It is expected that the project will begin in the early Fall of 2020 and will be completed in less than 60
days.
The following items are included in the application package, 1 hard copy of each and 1 digital copy of each on a
CD:
ATC Permit Application
Part 1 of the NPDES Permit
Engineering Specifications,including Sequence of Construction Plan
Engineering Plans
Engineering Calculations
Please do not hesitate to contact me or the Town's Engineer if you need additional information.
Sincerely
Torn Hartmaa
Mayor
Lon Snider,W-S Regional Office
Post Office Box 490 01 S.Jefferson Ave. West Jefferson,NC 28694
Phone:[phone] Fax:[phone]
?his institution is an equal opportunity provider and employer.
www.townofwjnc.com

• State of North Carolina
`5` Department of Environmental Quality
Division of Water Resources
Water Resources
ENVIRONMENTAL QUALITY APPLICATION FOR AUTHORIZATION TO CONSTRUCT PERMIT(FORM ATC-12-14)
SECTION 1: INSTRUCTIONS AND INFORMATION
A. The Division of Water Resources will accept this application package for review only if all of the items are provided and the
application is complete. Failure to submit all of the required items will result in the application package being returned as
incomplete per 15A NCAC 02T.0105(b).
B. Plans and specifications must be prepared in accordance with 15 NCAC 02H. 0100, 15A NCAC 02T, North Carolina General
Statute 133-3, North Carolina General Statute 143-215.1, and Division of Water Resources Minimum Design Criteria for NPDES
Wastewater Treatment Facilities.
C. The plans and specifications submitted must represent a completed final design that is ready to advertise for bid.
D. Any content changes made to this Form ATC-12-14 shall result in the application package being returned.
E. The Applicant shall submit ONE ORIGINAL and ONE DIGITAL COPY (CD) of the application, all supporting documentation and
attachments. All information must be submitted bound or in a 3-ring binder, with a Section tab for each Section, except the
Engineering Plans.
F. Check the boxes below to indicate that the information is provided and the requirements are met.
G. If attachments are necessary for clarity or due to space limitations, such attachments are considered part of the application
package and must be numbered to correspond to the item referenced.
H. For any project that requires review under the State Environmental Policy Act (SEPA), an Authorization to Construct cannot be
issued prior to the completion of a State Clearinghouse advertisement period for a FONSI, EIS, etc. unless the project qualifies
for a Determination of Minor Construction Activity.
I. For more information, visit the Division of Water Resources web site at: https://deq.nc.gov/about/divisions/water-
resources/water-resources-perm its/wastewater-branch/n pdes-wastewater/authorization-to-construct.
J. In addition to this Authorization to Construct, the Applicant should be aware that other permits may be required from other
Sections of the Division of Water Resources (for example: reclaimed water facilities permits; Class A or B biosolids residuals
permit).
SECTION 2:APPLICANT INFORMATION AND PROJECT DESCRIPTION RECEIVED
A. APPLICANT
JUL 22 2020
Applicant's name Town of West Jefferson NCDEQ/DWR/NPDFS
Signature authority's name per 15A NCAC 02T.0106(b) Tom Hartman
Signature authority's title Mayor
Complete mailing address PO Box 490,West Jefferson, NC 28694
Telephone number 336-246-3551
Email address [e-mail]
B. PROFESSIONAL ENGINEER
Professional Engineer's name Michael s.Acquesta
Professional Engineer's title Senior Project Engineer
North Carolina Professional Engineer's License No. 9480
Firm name Municipal Engineering Services
Firm License number C-281
Complete mailing address PO Box 349, Boone, NC 28607
Application for Authorization to Construct Permit(FORM ATC-12-14) Page 1

State of North Carolina
" Department of Environmental Quality
Division of Water Resources
Water Resources
ENVIRONMENTAL QUALITY APPLICATION FOR AUTHORIZATION TO CONSTRUCT PERMIT(FORM ATC-12-14)
Telephone number 919-971-5859
Email address [e-mail]
C. NPDES PERMIT
NPDES Permit number NC0020451
Current Permitted flow(MGD)—include permit 0.500 MGD
flow phases if applicable
D. PROJECT DESCRIPTION
Provide a brief description of the project:Project includes the replacement of two(2)fixed oxidation ditch aeration rotors with
two(2) new aspirating mixers/aerators. The existing fixed aerators will be removed once the new aspirating mixers/aerators
are installed and fully operational.
SECTION 3:APPLICATION ITEMS REQUIRED FOR SUBMITTAL FOR ALL PROJECTS
A. Cover Letter
® The letter must include a request for the Authorization to Construct;the facility NPDES Number;a brief project description
that indicates whether the project is a new facility, facility modification, treatment process modification, or facility
expansion;the construction timeline;and a list of all items and attachments included in the application package.
❑ If any of the requirements of 15 NCAC 02H. 0100, 15A NCAC 02T, North Carolina General Statute 133-3, North Carolina
General Statute 143-215.1, and Division of Water Resources Minimum Design Criteria for NPDES Wastewater Treatment
Facilities are not met by the proposed design,the letter must include an itemized list of the requirements that are not met.
B. NPDES Permit
® Submit Part I of the Final NPDES permit for this facility that includes'Part A (Effluent Limitations and Monitoring
Requirements)for the monthly average flow limit that corresponds to the work that is requested for this project.
C. Special Order by Consent
❑ If the facility is subject to any Special Orders by Consent(SOC),submit the applicable SOC.
® Not Applicable.
D. Finding of No Significant Impact or Record of Decision
❑ Submit a copy of the Finding of No Significant Impact or Record of Decision for this project.
❑ Provide a brief description of any of the mitigating factors or activities included in the approved Environmental Document
that impact any aspect of design of this project, if not specified in the Finding of No Significant Impact or Record of Decision.
® Not Applicable.
E. Engineering Plans
® Per 15A NCAC 02T.0504(c)(1),submit one set of detailed plans that have been signed,sealed and dated by a North Carolina
Licensed Professional Engineer.
Application for Authorization to Construct Permit(FORM ATC-12-14) Page 2

State of North Carolina
Department of Environmental Quality
Division of Water Resources
3i ...
Water Resources
ENVIRONMENTAL QUALITY APPLICATION FOR AUTHORIZATION TO CONSTRUCT PERMIT(FORM ATC-12-14)
® Per 21 NCAC 56.1103(a)(6),the name,address and License number of the Licensee's firm shall be included on each sheet of
the engineering drawings.
® Plans must be labeled as follows: FINAL DRAWING—FOR REVIEW PURPOSES ONLY—NOT RELEASED FOR CONSTRUCTION.
® 15A NCAC 02H .0124 requires multiple (dual at a minimum) components such as pumps, chemical feed systems, aeration
equipment and disinfection equipment. Is this requirement met by the design? ® Yes or ❑ No. If no, provide an
explanation:
Plans shall include:
® Plans for all applicable disciplines needed for bidding and construction of the proposed project(check as appropriate):
❑ Civil ® Not Applicable
® Process Mechanical ❑ Not Applicable
❑ Structural ® Not Applicable
® Electrical ❑ Not Applicable
❑ Instrumentation/Controls ® Not Applicable Controls will be provided by the aerator/mixer manufacturer
❑ Architectural ® Not Applicable
❑ Building Mechanical ® Not Applicable
❑ Building Plumbing ® Not Applicable
® Plan and profile views and associated details of all modified treatment units including piping, valves, and equipment
(pumps, blowers, mixers,diffusers,etc.)
® Are any modifications proposed that impact the hydraulic profile of the treatment facility? ❑ Yes or® No. If yes, provide
a hydraulic profile drawing on one sheet that includes all impacted upstream and downstream units. The profile shall
include the top of wall elevations of each impacted treatment unit and the water surface elevations within each impacted
treatment unit for two flow conditions: (1)the NPDES permitted flow with all trains in service and (2)the peak hourly flow
with one treatment train removed from service.
❑ Are any modifications proposed that impact the process flow diagram or process flow schematic of the treatment facility?
❑ Yes or ® No. If yes, provide the process flow diagram or process flow schematic showing all modified flow paths
including aeration, recycle/return, wasting, and chemical feed, with the location of all monitoring and control instruments
noted.
F. ® Engineering Specifications
® Per 15A NCAC 02T.0504(c)(2), submit one set of specifications that have been signed,sealed and dated by a North Carolina
Licensed Professional Engineer.
® Specifications must be labeled as follows: FINAL SPECIFICATIONS — FOR REVIEW PURPOSES ONLY— NOT RELEASED FOR
CONSTRUCTION.
Specifications shall include:
® Specifications for all applicable disciplines needed for bidding and construction of the proposed project (check as
appropriate):
❑ Civil ® Not Applicable
® Process Mechanical ❑ Not Applicable
❑ Structural ® Not Applicable
® Electrical ❑ Not Applicable
Application for Authorization to Construct Permit(FORM ATC-12-14) Page 3

State of North Carolina
Department of Environmental Quality
Division of Water Resources
Water Resources
ENVIRONMENTAL QUALITY APPLICATION FOR AUTHORIZATION TO CONSTRUCT PERMIT(FORM ATC-12-14)
❑ Instrumentation/Controls ® Not Applicable
❑ Architectural ® Not Applicable
❑ Building Mechanical ® Not Applicable
❑ Building Plumbing ® Not Applicable
® Detailed specifications for all treatment units and processes including piping, valves, equipment (pumps, blowers, mixers,
diffusers, etc.),and instrumentation.
® Means of ensuring quality and integrity of the finished product including leakage testing requirements for structures and
pipelines,and performance testing requirements for equipment.
❑ Bid Form for publicly bid projects. N/A
G. Construction Sequence Plan
® Construction Sequence Plan such that construction activities will not result in overflows or bypasses to waters of the State.
The Plan must not imply that the Contractor is responsible for operation of treatment facilities. List the location of the
Construction Sequence Plan as in the Engineering Plans or in the Engineering Specifications or in both: _
H. Engineering Calculations
® Per 15A NCAC 02T .0504(c)(3), submit one set of engineering calculations that have been signed, sealed and dated by a
North Carolina Licensed Professional Engineer; the seal, signature and date shall be placed on the cover sheet of the
calculations.
For new or expanding facilities and for treatment process modifications that are included in Section 4.C,the calculations shall
include at a minimum:
❑ Demonstration of how peak hour design flow was determined with a justification of the selected peaking factor. N/A
® Influent pollutant loading demonstrating how the design influent characteristics in Section 4.6.2 of this form were
determined.
® Pollutant loading for each treatment unit demonstrating how the design effluent concentrations in Section 4.B.2 of this
form were determined.
❑ Hydraulic loading for each treatment unit. N/A
® Sizing criteria for each treatment unit and associated equipment(blowers, mixers,pumps,etc.)
❑ Total dynamic head (TDH) calculations and system curve analysis for each pump specified that is included in Section 4.C.6.
N/A
❑ Buoyancy calculations for all below grade structures. N/A
❑ Supporting documentation that the specified auxiliary power source is capable of powering all essential treatment units.
N/A
Application for Authorization to Construct Permit(FORM ATC-12-14) Page 4

State of North Carolina
Department of Environmental Quality
Division of Water Resources
Water Resources
ENVIRONMENTAL OUALITY APPLICATION FOR AUTHORIZATION TO CONSTRUCT PERMIT(FORM ATC-12-14)
I. Permits
® Provide the following information for each permit and/or certification required for this project:
Permit/ If Not Issued Provide
Not Date Date Certification Status and Expected
Permit/Certification Applicable Submitted Approved Number Issuance Date
Dam Safety XX
Soil Erosion and Sediment Control XX
USCOE /Section 404 Permit XX
Water Quality Certification(401) XX
USCOE/Section 10 XX
Stormwater Management Plan XX
CAMA XX
NCDOT Encroachment Agreement XX
Railroad Encroachment Agreement XX
Other: XX
J. Residuals Management Plan
❑ For all new facilities, expanding facilities, or modifications that result in a change to sludge production and/or sludge
processes, provide a Residuals Management Plan meeting the requirements of 15A NCAC 02T.0504(I) and 15A NCAC 02T
.0508.the Plan must include:
❑ A detailed explanation as to how the generated residuals(including trash,sediment and grit)will be collected, handled,
processed,stored,treated, and disposed.
❑ An evaluation of the treatment facility's residuals storage requirements based upon the maximum anticipated residuals
production rate and ability to remove residuals.
❑ A permit for residuals utilization or a written commitment to the Applicant from a Permittee of a Department approved
residuals disposal/utilization program that has adequate permitted capacity to accept the residuals or has submitted a
residuals/utilization program application.
❑ If oil, grease, grit or screenings removal and collection is a designated unit process, a detailed explanation as to how
the oil/grease will be collected,handled, processed,stored and disposed.
® Not Applicable.
Application for Authorization to Construct Permit(FORM ATC-12-14) Page 5

State of North Carolina
Department of Environmental Quality
• Division of Water Resources
Water Resources
ENVIRONMENTAL QUALITY APPLICATION FOR AUTHORIZATION TO CONSTRUCT PERMIT(FORM ATC-12-14)
SECTION 4: PROJECT INFORMATION
A. WASTEWATER TREATMENT PLANT FLOW INFORMATION—COMPLETE FOR NEW OR EXPANDING FACILITIES
1. Provide the following flow information:
Plant Flows
Existing Plant Design 0.50 MGD
Current NPDES Permit Limit 0.50 MGD
Current Annual Average
(past 12 months) 0.321 MGD
For Past 12 Months: For Past 24 Months:
Start Date:September 2017 Start Date:September 2016
End Date:August 2018 End Date:August 2018
Maximum Month 0.482 MGD 0.482 MGD
Maximum Day 1.528 MGD 1.528 MGD
Peak Hour MGD MGD
Application for Authorization to Construct Permit(FORM ATC-12-14) Page 6

State of North Carolina
Department of Environmental Quality
Division of Water Resources
Water Resources
ENVIRONMENTAL QUALITY APPLICATION FOR AUTHORIZATION TO CONSTRUCT PERMIT(FORM ATC-12-14)
B. WASTEWATER TREATMENT FACILITY DESIGN INFORMATION—COMPLETE FOR NEW OR EXPANDING FACILITIES AND
FOR TREATMENT PROCESS MODIFICATIONS
1. Have all of the requirements of 15 NCAC 02H.0100, 15A NCAC 02T, North Carolina General Statute 133-3, North Carolina
General Statute 143-215.1,and Division of Water Resources Minimum Design Criteria for NPDES Wastewater Treatment
Facilities been met by the proposed design and specifications?®Yes or 0 No. If no, provide justification as to why the
requirements are not met,consistent with 15A NCAC 02T.0105(n):
2. Provide the design influent and effluent characteristics that are used as the basis for the project design,and the NPDES
permit limits for the following parameters:
Project Basis of Design
Design Influent Design Influent
Influent Concentration Load
Concentration- (Must be (Must be
Current Annual supported by supported by
Average(past Engineering Engineering Design Effluent
12 months)if Calculations Calculations Concentration and/or NPDES Permit Limits
Parameter Available [Section 3.H]) [Section 3.H]) Load (monthly average)
Ammonia Nitrogen 1.6 mg/L Summer 1.6 mg/L Summer
(NH3-N) 9.84 mg/L 20 mg/L 330 lb/day
3.6 mg/L Winter 3.6 mg/L Winter
Biochemical 5 rng/L Summer 5 mg/L Summer
Oxygen Demand 267 mg/L 375 mg/L 1820 lb/day
(BODs) 10 mg/L Winter 10 mg/L Winter
Fecal Coliform per 100 mL 200 per 100 mL
Nitrate+Nitrite
Nitrogen (NO3-N+ mg/L mg/L
NO2-N)
Total Kjeldahl
Nitrogen mg/L
mg/L mg/L
Total Nitrogen
lb/year lb/year
mg/L mg/L
Total Phosphorus 11.41 mg/L mg/L lb/day
lb/year lb/year
Total Suspended 173 mg/L 250 mg/L 1042 lb/day 10 mg/L 15 mg/L
Solids (TSS)
3. Based on the "Project Basis of Design" parameters listed above,will the proposed design allow the treatment facility to
meet the NPDES Permit Limits listed above? ®Yes or 0 No. If no,describe how and why the Permit Limits will not be
met: For Information Purposes-The plant currently has no TP or TN limits.
Application for Authorization to Construct Permit(FORM ATC-12-14) Page 7

State of North Carolina
Department of Environmental Quality
Division of Water Resources
Water Resources
ENVIRONMENTAL DUALITY APPLICATION FOR AUTHORIZATION TO CONSTRUCT PERMIT(FORM ATC-12-14)
4. Per 15A NCAC 02T.0505(j), by-pass and overflow lines are prohibited. Is this condition met by the design?®Yes or❑No
If no,describe the treatment units bypassed,why this is necessary, and where the bypass discharges:
5. Per 15A NCAC 02T.0505(k), multiple pumps shall be provided wherever pumps are used.Is this condition met by the
design?❑Yes or❑ No. If no,provide an explanation:N/A
6. Per 15A NCAC 02T.0505(1), power reliability shall be provided consisting of automatically activated standby power supply
onsite capable of powering all essential treatment units under design conditions,or dual power supply shall be provided
per 15A NCAC 02H.0124(2)(a). Is this condition met by the design? ®Yes or❑No. If no, provide(as an attachment
to this Application)written approval from the Director that the facility:
> Has a private water supply that automatically shuts off during power failures and does not contain elevated water
storage tanks, and
> Has sufficient storage capacity that no potential for overflow exists,and
> Can tolerate septic wastewater due to prolonged detention.
7. Per 15A NCAC 02T.0505(o),a minimum of 30 days of residual storage shall be provided. Is this condition met by the
design? ❑Yes or❑ No. If no, explain the alternative design criteria proposed for this project in accordance 15A NCAC
02T.105(n): N/A
8. Per 15A NCAC 02T.0505(q),the public shall be prohibited from access to the wastewater treatment facilities. Explain how
the design complies with this requirement: Existing fencing will remain in place.
9. Is the treatment facility located within the 100-year flood plain? ❑Yes or❑ No. If yes,describe how the facility is
protected from the 100-year flood:The existing oxidation ditch is not located within the 100-year flood plain.
Portions of the existing WWTP are located within the 100-year flood plain but have never been flooded.
C. WASTEWATER TREATMENT UNIT AND MECHANICAL EQUIPMENT INFORMATION—COMPLETE FOR NEW OR
EXPANDING FACILITIES AND FOR MODIFIED TREATMENT UNITS
1. PRELIMINARY AND PRIMARY TREATMENT(i.e.,physical removal operations and flow equalization):
No.of Plan Sheet Specification Calculations
Treatment Unit Type Size per Unit Provided?
Units Reference Reference
(Yes or No)
Manual Bar Screen MGD at peak hourly flow
Mechanical Bar
Screen MGD at peak hourly flow
Grit Removal MGD at peak hourly flow
Flow Equalization -- gallons
Primary Clarifier Circular ft diameter; ft side
water depth
Primary Clarifier Rectangular square feet; ft side
water depth
Other
Application for Authorization to Construct Permit(FORM ATC-12-14) Page 8

State of North Carolina
Department of Environmental Quality
Division of Water Resources
F•
Water Resources
ENVIRONMENTAL QUALITY APPLICATION FOR AUTHORIZATION TO CONSTRUCT PERMIT(FORM ATC-12-14)
2. SECONDARY TREATMENT(BIOLOGICAL REACTORS AND CLARIFIERS) (i.e., biological and chemical processes to remove
organics and nutrients)
No.of Plan Sheet Specification Calculations
Treatment Unit Provided?
Units Type Size per Unit Reference Reference
(Yes or No)
)
Aerobic Zones/
Tanks
Anoxic Zones/ gallons
Tanks
Anaerobic
Zones/Tanks gallons
Sequencing Batch
Reactor(SBR) gallons
Membrane gallons
Bioreactor(MBR)
Secondary Clarifier Circular
Secondary Clarifier Rectangular
Other
3. TERTIARY TREATMENT
No.of Plan Sheet Specification Calculations
Treatment Unit Provided?
Units Type Size per Unit Reference Reference
(Yes or No)
Tertiary Clarifier Circular ft diameter; ft side
water depth
Tertiary Clarifier Rectangular square feet; ft side
water depth
Tertiary Filter Traveling
bridge
Tertiary Membrane square feet
Filtration
Post-Treatment gallons
Flow Equalization
Post-Aeration gallons
Other
4. DISINFECTION
No.of Plan Sheet Specification Calculations
Treatment Unit Type Size per Unit Provided?
Units Reference Reference
(Yes or No)
Ultraviolet Light In Series
Chlorination (Gas; gallons of contact
tablet;liquid) _ tank/unit
Dechlorination
(Gas; gallons of contact
tablet; liquid) tank/unit
Application for Authorization to Construct Permit(FORM ATC-12-14) Page 9

State of North Carolina
NC' Department of Environmental Quality
Division of Water Resources
Water Resources
ENVIRONMENTAL QUALITY APPLICATION FOR AUTHORIZATION TO CONSTRUCT PERMIT(FORM ATC-12-14)
5. RESIDUALS TREATMENT
No.of Plan Sheet Specification Calculations
Treatment Unit Type Size per Unit Provided?
Units Reference Reference (Yes or No)
Gravity Thickening
Tank Rectangle
Mechanical
Thickening/ dry lb/hour
Dewatering
Aerobic Digestion Rectangle
Anaerobic
Digestion gallons
Composting dry lb/hour
Drying dry lb/hour
Other
6. PUMP SYSTEMS(include influent, intermediate, effluent, major recycles,waste sludge,thickened waste sludge and plant
drain pumps)
No.of Capacity of Plan Sheet Specification
Location Purpose Type each pump
Pumps GPM TDH Reference Reference
7. MIXERS
No.of Power of Plan Sheet Specification
Location Purpose Type each Mixer
Mixers (HP) Reference Reference
--- -
Aeration Basin 2 Oxygen Transfer Floating Aerators 10 C2, C3 11000
Outside Ring and Mixing
Application for Authorization to Construct Permit (FORM ATC-12-14) Page 10

State of North Carolina
Department of Environmental Quality
Division of Water Resources
Water Resources
ENVIRONMENTAL QUALITY APPLICATION FOR AUTHORIZATION TO CONSTRUCT PERMIT(FORM ATC-12-14)
8. BLOWERS
Capacity of
Location No.of Purpose Type each Blower Plan Sheet Specification
Blowers (CFM) Reference Reference
9. ODOR CONTROL
Location No. of Purpose Type Plan Sheet Specification
Units Reference Reference
D. SETBACKS—COMPLETE FOR NEW WASTEWATER TREATMENT STRUCTURES—N/A
1. The minimum distance for each setback parameter to the wastewater treatment/storage units per 15A NCAC 02T.0506(b)
are as follows:
Is Minimum Distance
Minimum Distance Requirement met by the
Setback Parameter Required from Nearest Design? If"No",identify
Treatment/Storage Setback Waivers in Item D.2
Unit
Below
Any habitable residence or place of assembly under separate 100 ft ❑Yes ❑ No
ownership or not to be maintained as part of the project site
Any private or public water supply source 100 ft ❑Yes ❑ No
Surface waters(streams—intermittent and perennial, perennial 50 ft 11 Yes ❑ No
waterbodies,and wetlands)
Any well with exception of monitoring wells 100 ft ❑Yes (1 No
Any property line 50 ft ❑Yes n No
2. Have any setback waivers been obtained per 15A NCAC 02T .0506(d)? ❑ Yes or ElNo. If yes, have these waivers been
written, notarized and signed by all parties involved and recorded with the County Register of Deeds? ❑ Yes or ❑ No. If
no, provide an explanation: N/A
Application for Authorization to Construct Permit(FORM ATC-12-14) Page 11

State of North Carolina
Department of Environmental Quality
Division of Water Resources
Water Resources
ENVIRONMENTAL QUALITY APPLICATION FOR AUTHORIZATION TO CONSTRUCT PERMIT(FORM ATC-12-14)
SECTION 5:APPLICATION CERTIFICATION BY PROFESSIONAL ENGINEER
Professional Engineer's Certification per 15A NCAC 02T.0105:
I, Michael S.Acquesta, attest that this application package for an Authorization to Construct
(Typed Name of Professional Engineer)
for the West Jefferson Wastewater Treatment Facility,Aspirating Aerators/Mixers Installation to replace 2 outdated rotors
(Facility and Project Name)
was prepared under my direct supervisory control and to the best of my knowledge is accurate,complete and consistent
with the information supplied in the engineering plans, specifications, calculations,and all other supporting
documentation for this project. I further attest that to the best of my knowledge the proposed design has been
prepared in accordance with all applicable regulations and statutes, 15 NCAC 02H.0100, 15A NCAC 02T, North Carolina
General Statute 133-3, North Carolina General Statute 143-215.1, and Division of Water Resources Minimum Design
Criteria for NPDES Wastewater Treatment Facilities, and this Authorization to Construct Permit Application,except as
provided for and explained in Section 4.B.1 of this Application. I understand that the Division of Water Resources'
issuance of the Authorization to Construct Permit may be based solely upon this Certification and that the Division may
waive the technical review of the plans, specifications, calculations and other supporting documentation provided in this
application package. I further understand that the application package may be subject to a future audit by the Division.
Although certain portions of this submittal package may have been prepared,signed and sealed by other professionals
licensed in North Carolina, inclusion of these materials under my signature and seal signifies that I have reviewed the
materials and have determined that the materials are consistent with the project design.
I understand that in accordance with General Statutes 143-215.6A and 143-215.6B, any person who knowingly makes
any false statement, representation, or certification in any application package shall be guilty of a Class 2 misdemeanor,
which may include a fine not to exceed$10,000, as well as civil penalties up to$25,000 per violation.
North Carolina Professional placed g Engineer's seal with written signature over or adjacent to the seal and dated:
it
rro',�
1-7 Ai� •E 9480 r•
'�i•S•q'.GIN ESE;'
��FjrSi ACQ‘‘‘O���
July 15, 2020
SECTION 6:APPLICATION CERTIFICATION BY APPLICANT
Applicant's Certification per 15A NCAC 02T.0106(b):
I, Tom Hartman, Mayor, attest that this application package for an Authorization to Construct
Application for Authorization to Construct Permit(FORM ATC-12-14) Page 12
L

State of North Carolina
Department of Environmental Quality
Division of Water Resources
Water Resources
ENVIRONMENTAL QUALITY APPLICATION FOR AUTHORIZATION TO CONSTRUCT PERMIT(FORM ATC-12-14)
(Typed Name of Signature Authority and Title)
for the West Jefferson Wastewater Treatment Facility,Aspirating Aerators/Mixers Installation to replace 2 outdated rotors
(Facility and Project Name)
has been reviewed by me and is accurate and complete to the best of my knowledge. I also understand that if all
required parts of this application package are not completed and that if all required supporting information and
attachments are not included, this application package will be returned to me as incomplete. I further certify that in
accordance with 15A NCAC 02T.0120(b),the Applicant or any affiliate has not been convicted of environmental crimes,
has not abandoned a wastewater facility without proper closure, does not have an outstanding civil penalty where all
appeals have been abandoned or exhausted, are compliant with any active compliance schedule, and does not have any
overdue annual fees.
I understand that the Division of Water Resources' issuance of the Authorization to Construct Permit may be based
solely upon acceptance of the Licensed Professional Engineer's Certification contained in Section 5,and that the Division
may waive the technical review of the plans,specifications, calculations and other supporting documentation provided
in this application package. I further understand that the application package may be subject to a future audit.
I understand that in accordance with General Statutes 143-215.6A and 143-215.6E any person who knowingly makes
any false statement, representation, or certification in any application package shall be guilty of a Class 2 misdemeanor,
which may include a fine not to exceed$10,000, as well as civil penalties up to$25,000 per violation.
ZPSignature: ' �3.z� 1 Date: "7' Ic'
THE COMPLETED APPLICATION AND SUPPORTING INFORMATION SHALL BE SUBMITTED TO:
NORTH CAROLINA DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF WATER RESOURCES/NPDES
By U.S. Postal Service By Courier/Special Delivery:
1617 MAIL SERVICE CENTER 512 N. SALISBURY STREET, 9TH FLOOR
RALEIGH, NORTH CAROLINA 27699-1617 RALEIGH, NORTH CAROLINA 27604
TELEPHONE NUMBER: [phone]
Application for Authorization to Construct Permit(FORM ATC-12-14) Page 13

Nor
ROY COOPER
Governor
MICHAEL S. REGAN
Secretary
LINDA CULPEPPER
Water Resources
ENVIRONMENTAL QUALITY Interim Direckn
February 16,2018
Brantley Price,Town Manager
Town of West Jefferson
PO Box 490
West Jefferson,North Carolina 28694
Subject: Final NPDES Permit Renewal
Permit NC0020451
West Jefferson WWTP
Ashe County
Facility Class II
SIC Code 4952
Dear Mr.Price:
Division personnel have reviewed and approved your application for renewal of the subject permit.
Accordingly, we are forwarding the attached NPDES permit. This permit is issued pursuant to the
requirements of North Carolina General Statute 143-215.1 and the Memorandum of Agreement between
North Carolina and the U.S. Environmental Protection Agency dated October 15, 2007 (or as
subsequently amended).
Please note that the receiving stream is listed as impaired for benthos on the North Carolina 2014 303(d)
Impaired Waters List. Addressing impaired waters is a high priority with the Division, and instream data
will continue to be evaluated. If there is noncompliance with permitted effluent limits and stream
impairment can be attributed to your facility,then mitigative measures may be required.
The following changes were made to the draft permit sent to you on November 15,2017:
• The influent flow meter and spray-irrigation system were removed from the components list per
comments received from the Town.
The final permit maintains the following significant changes identified in the letter sent on
November 15,2017:
• The NC 2007-2014 Water Quality Standards(WQS)Triennial Review was approved by the NC
Environmental Management Committee(EMC)on November 13,2014. The US EPA
subsequently approved the WQS revisions on April 6,2016 with some exceptions.The NC
Division of Water Resources NPDES Permitting Unit is required to implement the new dissolved
metal standards in all permits public noticed after April 6,2016.The new standards for most
metals include acute standards.Further,the freshwater standards for several metals are expressed
as the dissolved form of the metals,and seven metals have hardness-dependent equations.
As a result,the NPDES Permitting Unit will need site-specific effluent hardness data and
instream hardness data,upstream of the discharge,for each facility monitoring these metals in
State of North Carolina Environmental Quality Water Resources
1617 Mail Service Center l Raleigh,North Carolina 27699-1617
919 807 6300

Page 12
order to calculate permit limitations. Effluent hardness and instream hardness sampling,
upstream of the discharge,has been added to this permit at a monitoring frequency of quarterly.
See Special Condition A.(1.)Effluent Limitations and Monitoring Requirements.
• Based on a reasonable potential analysis using the new WQS discussed above along with
submitted hardness data from June 2017,total copper showed reasonable potential to violate NC
WQS with chronic and acute limits calculated at 37 µg/L and 52 µg/L respectively.Monthly
monitoring with monthly average and daily maximum limits have been added to this permit. See
Special Condition A. (1.).
• A reasonable potential analysis for cyanide,cadmium,beryllium,and zinc did not demonstrate
reasonable potential to violate WQS and monitoring for those parameters has been removed from
this permit.
• Selenium showed reasonable potential to violate WQS in a limited dataset(<8 samples)with only
one sample exceeding the standard,therefore monitoring has been added at a frequency of
quarterly. See Special Condition A. (1.).
• Review of effluent data shows all samples for beryllium were reported at less than detection with
detection levels ranging from<1 µg/L to<50 µg/L. In accordance with 15A NCAC 2B .0500 all
test procedures must produce detection and reporting levels that are below the permit discharge
requirements and all data generated must be reported to the approved detection level or lower
reporting level of the procedure. Currently,DWR's laboratory identifies the Practical
Quantitation Limit(PQL)for beryllium at<5 µg/L.The allowable discharge concentration for
beryllium at your facility is 11.6 µg/L as a monthly average.Therefore,future sampling for
beryllium as part of the facility's Effluent Pollutant Scans should sample beryllium to the lower
reporting level of the procedure which is<5 µg/L.
• Due to adoption of a statewide mercury TMDL in 2012 and no reasonable potential to violate
WQS,mercury monitoring has been removed in this permit.
• Federal regulations require electronic submittal of all discharge monitoring reports(DMRs)and
program reports.The requirement to continue reporting discharge monitoring data electronically
using the NC DWR's Electronic Discharge Monitoring Report(eDMR)internet application has
been added to your NPDES permit. See Special Condition A. (4.)
If any parts,measurement frequencies or sampling requirements contained in this permit are unacceptable
to you, you have the right to an adjudicatory hearing upon written request within thirty (30) days
following receipt of this letter. This request must be in the form of a written petition, conforming to
Chapter 150B of the North Carolina General Statutes, and filed with the Office of Administrative
Hearings (6714 Mail Service Center, Raleigh, North Carolina 27699-6714). Unless such demand-is
made,this decision shall be fmal and binding.
Please note that this permit is not transferable except after notice to the Division. The Division may
require modification or revocation and reissuance of the permit. This permit does not affect the legal
requirements to obtain other permits which may be required by the Division of Water Resources or any
other Federal, State, or Local governmental permits that may be required.

Page 13
If you have any questions concerning this permit, please contact David Hill at [phone] or via
email at [e-mail].
Sincerely,
4: Linda Culpepper
Interim Director,Division of Water Resources,
NCDEQ
Hardcopy: NPDES Files
Central Files
DWR/Winston-Salem Regional Office/Water Quality
Ecopy: US EPA Region 4
DWR/Aquatic Toxicology Branch/Susan Meadows
DWR/PERCS/Deborah Gore

Permit NC002045 1
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENTAL QUALITY
DIVISION OF WATER RESOURCES
PERMIT
TO DISCHARGE WASTEWATER UNDER THE
NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM
In compliance with the provisions of North Carolina General Statute 143-215.1, other lawful
standards and regulations promulgated and adopted by the North Carolina Environmental
Management Commission, and the Federal Water Pollution Control Act, as amended, the
Town of West Jefferson
is hereby authorized to discharge wastewater from a facility located at the
West Jefferson Wastewater Treatment Plant
335 Clearwater Drive
West Jefferson
Ashe County
to receiving waters designated as an unnamed tributary to Little Buffalo Creek in the New River
Basin in accordance with effluent limitations,monitoring requirements, and other conditions set
forth in Parts I, II, III and IV hereof.
This permit shall become effective April 1, 2018.
This permit and authorization to discharge shall expire at midnight on April 30, 2022.
Signed this day February 16, 2018.
(276/ 62
6,),: Linda Culpepper
Interim Director, Division of Water Resources
By the Authority of the Environmental Management Commission

Permit NC0020451
SUPPLEMENT TO PERMIT COVER SHEET
All previous NPDES Permits issued to this facility,whether for operation or discharge are hereby
revoked. As of this permit issuance, any previously issued permit bearing this number is no longer
effective. Therefore,the exclusive authority to operate and discharge from this facility arises under the
permit conditions, requirements,terms, and provisions included herein.
The Town of West Jefferson is hereby authorized to:
1. Continue to operate and maintain an existing 0.5 MGD extended aeration wastewater treatment
facility consisting of the following components:
• Mechanical bar screen
• Manual bar screen bypass channel
• Influent pump station with three(3)434 GPM pumps
• Dual channel concentric oxidation ditches with dual 30 HP rotors
• 45-foot diameter secondary clarifier
• Dual traveling bridge tertiary filters
• In-channel ultraviolet disinfection with two banks of lamps
• Post aeration basin with diffused air
• Aerobic digestion basin with two(2)blowers
• Two 521 GPM return sludge pumps
• 50 KW standby generator
• Associated yard piping and site work electrical work
This facility is located at the West Jefferson Wastewater Treatment Plant, 335 Clearwater Drive,
West Jefferson in Ashe County.
2. Discharge from said treatment works at the location specified on the attached map via Outfall 001
into an unnamed tributary of Little Buffalo Creek,classified C-Trout+waters in the New River Basin.
1 of 10

Permit NC002045 1
PART I
A. (1.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS
[15A NCAC 02B .0400 et seq., 15A NCACO2B .0500 et seq.]
During the period beginning on the effective date of the permit and lasting until expiration,the permittee
is authorized to discharge treated domestic and industrial wastewater from Outfall 001. Such discharges
shall be limited and monitored' by the permittee as specified below:
PARAMETER CHARACTERISTICS EFFLUENT LIMITS MONTrORING REQUIREMENTS
Monthly Weekly 'Daily Measurement Sample Sample
PARAMETER CODE Average Average Maximum.. Frequency Type Location2
Flow 50050 0.5 MGD Continuous Recording I or E
BOD,5 day,20°C3 C0310
(April 1-October 31) 5.0 mg/L 7.5 mg/L Weekly Composite I and E
BOD,5 day,20°C3 C0310
(November 1-March 31) 10.0 mg/L 15.0 mg/L Weekly Composite I and E
Total Suspended Solids3 C0530 10.0 mg/L 15.0 mg/L Weekly Composite I and E
NH3 as N C0610
(Apr 1-Oct 31) 1.6 mg/L 4.8 mg/L Weekly Composite E
NH3 as N C0610
(Nov 1-Mar 31) 3.6 mg/L 10.8 mg/L Weekly Composite E
Dissolved Oxygen 00300 Daily Average?6.0 mg/L Weekly Grab E
Dissolved Oxygen (mg/L) 00300 Variable2 Grab U and D
pH 00400 Between 6.0 and 9.0 Standard Units Weekly Grab E
Temperature°C 00010 Weekly Grab E
Temperature°C 00010 Variable2 Grab U and D
Fecal Coliform 31616 200/100 mL 400/100 mL Weekly Grab E
(geometric mean)
Conductivity(µmhos/cm) 00094 Weekly Grab E
Conductivity(µmhos/cm) 00094 Variable2 Grab U and D
Total Residual Chlorine4 50060 28 µg/L 2/week Grab E
Total Nitrogen5 (mg/L) C0600 Semi-Annually Calculated E
Total Phosphorus(mg/L) C0665 Semi-Annually Composite E
Chronic Toxicity6 TGP3B Quarterly Composite E
Pollutant Scan7 NC01 Monitor and Report Footnote 7 Footnote 7 E
Hardness—Total as 00900
[CaCO3 or(Ca+Mg)] (mg/L)8 Quarterly Composite E
Hardness—Total as 00900
[CaCO3 or(Ca+Mg)] (mg/L)9 Quarterly Grab U
Total Copper 01042 37 µg/L 52 µg/L Monthly Composite E
Total Selenium 01147 Quarterly Composite E
Footnotes:
1. The permittee shall submit Discharge Monitoring Reports electronically using NC DWR's eDMR
application system. See Special Condition A. (4.).
2. Sample locations I-Influent, E-Effluent, U-Upstream = approximately 50 feet above the discharge point, D-
Downstream=at the bridge. Upstream and downstream samples shall be grab samples collected 3/week during
June,July,August,and September and I/week during the remainder of the year.
3. The monthly average effluent BOD5 and Total Suspended Solids concentrations shall not exceed 15% of the
respective influent value(85%removal).
4. The Division shall consider all effluent total residual chlorine values reported below 50 µg/1 to be in compliance
with the permit. However,the permittee shall continue to record and submit all values reported by a North
Carolina certified laboratory(including field certified),even if these values fall below 50 µg/l.
Footnotes are continued on the next page.
2 of 10

Permit NC002045 1
Footnotes continued from A.(1.).
5. For a given wastewater sample,TN=TKN+NO3-N+NO2-N,where TN is Total Nitrogen,TKN is Total
Kjeldahl Nitrogen,and NO3-N and NO2-N are Nitrate and Nitrite Nitrogen,respectively.
6. Chronic Toxicity(Ceriodaphnia dubia)P/F at 56%with testing in January,April,July,and October.See
Special Condition A. (2.).
7. The permittee shall perform three effluent pollution scans during the term of this permit. See Special Condition
A. (3.).
8. Effluent hardness sampling should be performed in conjunction with testing for hardness dependent metals
(cadmium,copper,lead,nickel,silver,and zinc).
9. The permittee shall sample instream hardness upstream of the facility's discharge. The sample shall be
representative of the hardness in the stream.
There shall be no discharge of floating solids or visible foam in other than trace amounts.
3 of 10

Permit NC0020451
A. (2.) CHRONIC TOXICITY PERMIT LIMIT (QUARTERLY)
[15A NCAC 02B.0200]
The effluent discharge shall at no time exhibit observable inhibition of reproduction or significant
mortality to Ceriodaphnia dubia at an effluent concentration of 56%.
The permit holder shall perform at a minimum,quarterly monitoring using test procedures outlined in the
"North Carolina Ceriodaphnia Chronic Effluent Bioassay Procedure,"Revised December 2010,or
subsequent versions or"North Carolina Phase II Chronic Whole Effluent Toxicity Test Procedure"
(Revised-December 2010)or subsequent versions.The tests will be performed during the months of
January,April,July,and October. These months signify the first month of each three-month toxicity
testing quarter assigned to the facility. Effluent sampling for this testing must be obtained during
representative effluent discharge and shall be performed at the NPDES permitted final effluent discharge
below all treatment processes.
If the test procedure performed as the first test of any single quarter results in a failure or ChV
below the permit limit,then multiple-concentration testing shall be performed at a minimum,in
each of the two following months as described in"North Carolina Phase II Chronic Whole Effluent
Toxicity Test Procedure"(Revised-December 2010)or subsequent versions.
All toxicity testing results required as part of this permit condition will be entered on the Effluent
Discharge Monitoring Form(MR-1) for the months in which tests were performed,using the parameter
code TGP3B for the pass/fail results and THP3B for the Chronic Value. Additionally,DWR Form AT-3
(original) is to be sent to the following address:
Attention: North Carolina Division of Water Resources
Water Sciences Section/Aquatic Toxicology Branch
1621 Mail Service Center
Raleigh,NC 27699-1621
Completed Aquatic Toxicity Test Forms shall be filed with the Water Sciences Section no later than 30
days after the end of the reporting period for which the report is made.
Test data shall be complete,accurate,include all supporting chemical/physical measurements and all
concentration/response data,and be certified by laboratory supervisor and ORC or approved designate
signature. Total residual chlorine of the effluent toxicity sample must be measured and reported if
chlorine is employed for disinfection of the waste stream.
Should there be no discharge of flow from the facility during a month in which toxicity monitoring is
required,the permittee will complete the information located at the top of the aquatic toxicity(AT)test
form indicating the facility name,permit number,pipe number, county, and the month/year of the report
with the notation of"No Flow"in the comment area of the form. The report shall be submitted to the
Water Sciences Section at the address cited above
Should the permittee fail to monitor during a month in which toxicity monitoring is required,monitoring
will be required during the following month.Assessment of toxicity compliance is based on the toxicity
testing quarter,which is the three month time interval that begins on the first day of the month in which
toxicity testing is required by this permit and continues until the final day of the third month.
4 of 10

Permit NC002045 1
Should any test data from this monitoring requirement or tests performed by the North Carolina Division
of Water Resources indicate potential impacts to the receiving stream, this permit may be re-opened and
modified to include alternate monitoring requirements or limits.
NOTE: Failure to achieve test conditions as specified in the cited document, such as minimum control
organism survival,minimum control organism reproduction,and appropriate environmental controls,
shall constitute an invalid test and will require immediate follow-up testing to be completed no later than
the last day of the month following the month of the initial monitoring.
5 of 10

Permit NC0020451
A. (3.) EFFLUENT POLLUTANT SCAN(Municipal POTWs)
[G.S. 143-215.1(b)]
The permittee shall perform a total of three(3)Effluent Pollutant Scans for all parameters listed below.One
scan must be performed in each of the following years: 2018, 2019, and 2020. Analytical methods shall
be in accordance with 40 CFR Part 136 and shall be sufficiently sensitive to determine whether parameters
are present in concentrations greater than applicable standards and criteria. Samples should be collected
with one quarterly toxicity test each year, and must represent seasonal variation [i.e.,do not sample in the
same quarter every year]. Unless otherwise indicated,metals shall be analyzed as"total recoverable."
Ammonia(as N) C0610 1,2-dichloroethane 32103 Bis(2-chloroethoxy)methane 34278
Chlorine(total residual,TRC 50060 Trans-I,2-dichloroethylene 34546 Bis(2-chioroethyl)ether 34273
Dissolved oxygen 00300 1,1-dichloroethylene 34501 Bis(2-chloroisopropyl)ether 34283
Nitrate 00620 1,2-dichloropropane 34541 Bis(2-ethylhexyl)phthalate 39100
Nitrite 00615 1,3-dichloropropylene 77163 4-bromophenyl phenyl ether 34636
Kjeldahl nitrogen 00625 Ethylbenzene 34371 Butyl benzyl phthalate 34292
Oil and grease 00556 Methyl bromide 34413 2-chloronaphthalene 34581
Phosphorus C0665 Methyl chloride 34418 4-chlorophenyl phenyl ether 34641
Total dissolved solids 70295 Methylene chloride 34423 Chrysene 34320
Hardness 00900 1,1,2,2-tetrachloroethane 81549 Di-n-butyl phthalate 39110
Antimony 01097 Tetrachloroethylene 34475 Di-n-octyl phthalate 34596
Arsenic 01002 Toluene 34010 Dibenzo(a,h)anthracene 34556
Beryllium 01012 1,1,1-trichloroethane 34506 1,2-dichlorobenzene 34536
Cadmium 01027 1,1,2-trichloroethane 34511 1,3-dichlorobenzene 34566
Chromium 01034 Trichloroethylene 39180 1,4-dichlorobenzene 34571
Copper 01042 Vinyl chloride 39175 3,3-dichlorobenzidine 34631
Lead 01051 Acid-extractable compounds: Diethyl phthalate 34336
Mercury(Method 1631E) COMER P-chloro-m-cresol 34452 Dimethyl phthalate 34341
Nickel 01067 2-chlorophenol 34586 2,4-dinitrotoluene 34611
Selenium 01147 2,4-dichlorophenol 34601 2,6-dinitrotoluene C0626
Silver 01077 2,4-dimethylphenol 34606 1,2-diphenylhydrazine 34346
Thallium 01059 4,6-dinitro-o-cresol 34657 Fluoranthene C0376
Zinc 01092 2,4-dinitrophenol 34616 Fluorene 34381
Cyanide 00720 2-nitrophenol 34591 Hexachlorobenzene C0700
Total phenolic compounds 32730 4-nitrophenol 34646 Hexachlorobutadiene 39702
Volatile organic compounds: Pentachlorophenol 39032 Hexachlorocyclo-pentadiene 34386
Acrolein 34210 Phenol 34694 Hexachloroethane 34396
Acrylonitrile 34215 2,4,6-trichlorophenol 34621 Indeno(1,2,3-cd)pyrene 34403
Benzene 34030 Base-neutral compounds: Isophorone 34408
Bromoform 32104 Acenaphthene 34205 Naphthalene 34696
Carbon tetrachloride 32102 Acenaphthylene 34200 Nitrobenzene 34447
Chlorobenzene 34301 Anthracene CO220 N-nitrosodi-n-propylamine 34428
Chlorodibromomethane 34306 Benzidine 39120 N-nitrosodimethylamine 34438
Chloroethane 85811 Benzo(a)anthracene 34526 N-nitrosodiphenylamine 34433
2-chloroethyl vinyl ether 34576 Benzo(a)pyrene 34247 Phenanthrene 34461
Chloroform 32106 3,4 benzofluoranthene 34230 Pyrene 34469
Dichlorobromomethane 32101 Benzo(ghi)perylene 34521 1,2,4-trichlorobenzene 34551
1,1-dichloroethane 34496 Benzo(k)fluoranthene 34242
6 of 10

Permit NC0020451
Reporting. Test results shall be reported electronically via eDMR or on DWR Form—DMR-PPA-1 (or
on a form approved by the Director)by December 31'of each designated sampling year. The report shall
be submitted to the following address:
NC DEQ/DWR/Central Files, 1617 Mail Service Center,Raleigh,North Carolina 27699-1617.
Additional Toxicity Testing Requirements for Municipal Permit Renewal. Please note that Municipal
facilities that are subject to the Effluent Pollutant Scan requirements listed above are also subject to
additional toxicity testing requirements specified in Federal Regulation 40 CFR 122.21(j)(5). The US EPA
requires four(4)toxicity tests for a test organism other than the test species currently required in this permit.
The multiple species tests should be conducted either quarterly for a 12-month period prior to submittal of
the permit renewal application,or four tests performed at least annually in the four and one half year period
prior to the application. These tests shall be performed for acute or chronic toxicity,whichever is specified
in this permit. The multiple species toxicity test results shall be filed with the Aquatic Toxicology Branch
at the following address:
North Carolina Division of Water Resources
Water Sciences Section/Aquatic Toxicology Branch
1621 Mail Service Center
Raleigh,North Carolina 27699-1621
Contact the Division's Aquatic Toxicology Branch at 919-743-8401 for guidance on conducting the
additional toxicity tests and reporting requirements. Results should also be summarized in Part E(Toxicity
Testing Data)of EPA Municipal Application Form 2A,when submitting the permit renewal application to
the NPDES Permitting Unit.
A. (4.) ELECTRONIC REPORTING OF MONITORING REPORTS
[G.S. 143-215.1(b)]
Federal regulations require electronic submittal of all discharge monitoring reports (DMRs) and program
reports. The final NPDES Electronic Reporting Rule was adopted and became effective on December 21,
2015.
NOTE: This special condition supplements or supersedes the following sections within Part II of this permit
(Standard Conditions for NPDES Permits):
• Section B. (11.) Signatory Requirements
• Section D. (2.) Reporting
• Section D. (6.) Records Retention
• Section E.(5.) Monitoring Reports
1. Reporting Requirements [Supersedes Section D.(2.)and Section E. (5.) (a)1
7 of 10

Permit NC0020451
The permittee shall report discharge monitoring data electronically using the NC DWR's Electronic
Discharge Monitoring Report(eDMR)intemet application.
Monitoring results obtained during the previous month(s) shall be summarized for each month and
submitted electronically using eDMR. The eDMR system allows permitted facilities to enter
monitoring data and submit DMRs electronically using the intemet. Until such time that the state's
eDMR application is compliant with EPA's Cross-Media Electronic Reporting Regulation
(CROMERR), permittees will be required to submit all discharge monitoring data to the state
electronically using eDMR and will be required to complete the eDMR submission by printing,signing,
and submitting one signed original and a copy of the computer printed eDMR to the following address:
NC DEQ/Division of Water Resources/Water Quality Permitting Section
ATTENTION: Central Files
1617 Mail Service Center
Raleigh,North Carolina 27699-1617
If a permittee is unable to use the eDMR system due to a demonstrated hardship or due to the facility
being physically located in an area where less than 10 percent of the households have broadband access,
then a temporary waiver from the NPDES electronic reporting requirements may be granted and
discharge monitoring data may be submitted on paper DMR forms(MR 1, 1.1,2,3)or alternative forms
approved by the Director. Duplicate signed copies shall be submitted to the mailing address above.
See"How to Request a Waiver from Electronic Reporting"section below.
Regardless of the submission method,the first DMR is due on the last day of the month following the
issuance of the permit or in the case of a new facility, on the last day of the month following the
commencement of discharge.
Starting on December 21, 2020, the permittee must electronically report the following compliance
monitoring data and reports,when applicable:
• Sewer Overflow/Bypass Event Reports;
• Pretreatment Program Annual Reports;and
• Clean Water Act(CWA) Section 316(b)Annual Reports.
The permittee may seek an electronic reporting waiver from the Division (see "How to Request a
Waiver from Electronic Reporting"section below).
2. Electronic Submissions
In accordance with 40 CFR 122.41(l)(9),the permittee must identify the initial recipient at the time of
each electronic submission. The permittee should use the EPA's website resources to identify the initial
recipient for the electronic submission.
Initial recipient of electronic NPDES information from NPDES-regulated facilities means the entity
(EPA or the state authorized by EPA to implement the NPDES program)that.is the designated entity
for receiving electronic NPDES data[see 40 CFR 127.2(b)].
EPA plans to establish a website that will also link to the appropriate electronic reporting tool for each
type of electronic submission and for each state. Instructions on how to access and use the appropriate
electronic reporting tool will be available as well. Information on EPA's NPDES Electronic Reporting
8 of 10

Permit NC0020451
Rule is found at: https://www.federalregister.gov/documents/2015/10/22/2015-24954/national-
pollutant-discharge-elimination-system-npdes-electronic-reporting-rule
Electronic submissions must start by the dates listed in the"Reporting Requirements"section above.
3. How to Request a Waiver from Electronic Reporting
The permittee may seek a temporary electronic reporting waiver from the Division. To obtain an
electronic reporting waiver,a permittee must first submit an electronic reporting waiver request to the
Division. Requests for temporary electronic reporting waivers must be submitted in writing to the
Division for written approval at least sixty (60) days prior to the date the facility would be required
under this permit to begin submitting monitoring data and reports. The duration of a temporary waiver
shall not exceed 5 years and shall thereupon expire. At such time,monitoring data and reports shall be
submitted electronically to the Division unless the permittee re-applies for and is granted a new
temporary electronic reporting waiver by the Division. Approved electronic reporting waivers are not
transferrable. Only permittees with an approved reporting waiver request may submit monitoring data
and reports on paper to the Division for the period that the approved reporting waiver request is
effective.
Information on eDMR and the application for a temporary electronic reporting waiver are found on the
following web page:
http://deq.nc.gov/about/divisions/water-resources/edmr
4. Signatory Requirements [Supplements Section B.(11.)(b)and Supersedes Section B.(11.) (d)1
All eDMRs submitted to the permit issuing authority shall be signed by a person described in Part II,
Section B. (11.)(a)or by a duly authorized representative of that person as described in Part II, Section
B. (11.)(b). A person, and not a position, must be delegated signatory authority for eDMR reporting
purposes.
For eDMR submissions, the person signing and submitting the DMR must obtain an eDMR user
account and login credentials to access the eDMR system. For more information on North Carolina's
eDMR system,registering for eDMR and obtaining an eDMR user account,please visit the following
web page:
http://deq.nc.gov/about/divisions/water-resources/edmr
Certification. Any person submitting an electronic DMR using the state's eDMR system shall make
the following certification [40 CFR 122.22]. NO OTHER STATEMENTS OF CERTIFICATION
WILL BE ACCEPTED:
"I certify, under penalty of law, that this document and all attachments were prepared under my
direction or supervision in accordance with a system designed to assure that qualified personnel
properly gather and evaluate the information submitted. Based on my inquiry of the person or persons
who manage the system, or those persons directly responsible for gathering the information, the
information submitted is, to the best of my knowledge and belief true, accurate, and complete. I am
aware that there are significant penalties for submitting false information, including the possibility of
fines and imprisonment for knowing violations."
9 of 10

Permit NC0020451
5. Records Retention [Supplements Section D. (6.)1
The permittee shall retain records of all Discharge Monitoring Reports,including eDMR submissions.
These records or copies shall be maintained for a period of at least 3 years from the date of the report.
This period may be extended by request of the Director at any time [40 CFR 122.41].
10 of 10

--it
Project Specifications
FINAL SPECIFICATIONS - FOR REVIEW PURPOSES ONLY
NOT RELEASED FOR CONSTRUCTION
Aspirating Installation
At Wastewater Treatment Plant 1
1
For
TOWN OF WEST JEFFERSON NORTH CAROLINA
July 15, 2020
Project Number: G20081
CIVIL/SANITARY/ENVIRONMENTAL ENGINEERS e- SOLID WASTE MANAGEMENT
Municipal • F
Engineering
Services Company, P.A.
SITE PLANNING/SUBDIVISIONS SUBSURFACE UTILITY ENGINEERING(SUE)
E ;yy j Originating Office: PO Box 349
eje
Boone,NC 28607
= • AC r-•(I, 9g80 Ph: 828-262-1767
1Fax: [phone]
q'y�ItJEEE.Q'�'�'���
' i,S;tgC\NN Corporate License C-0281
July 15,2020
,

Page 1
Table of Contents
CONSTRUCTION SEQUENCE PLAN 1
GENERAL SPECIFICATIONS
Section 4.0 - Site Work 1-18
Section 5.0 - Fencing 1-13
Section 12.0 - Miscellaneous Metal Work 1-22
Section 15.0 - Electrical Motors 1-4
Section 17.0 - Restoration and Cleanup 1-2
SPECIAL DETAIL SPECIFICATIONS
SECTION 11000 ASPIRATING AERATORS/ MIXERS 1-5
SECTION 16100 ELECTRICAL 1-8

CONSTRUCTION SEQUENCE PLAN
A. The existing aeration rotors shall not be turned off or removed until the new aspirating
aerators/mixers have been fully assembled on site and are ready for installation and permanent
operation.
B. All new electrical wiring for the new aspirating aerators/mixers shall be installed new
from the existing panel boxes as noted on the contract drawings prior to the installation of the
new rotors.
C. Operation of the existing aeration rotors shall be the responsibility of the West Jefferson
WWTP plant staff. The contractor installing the new aspirating aerators/mixers shall not turn
on/off the existing rotors, but shall coordinate with the WWTP plant staff if any cessation or re-
starting of the existing rotors is needed.
D. Influent flow to the inner ring of the oxidation DITCH shall be valved-off(if possible)
during removal of the existing wiring, removal of the old rotors and installation of the new
equipment.
E. Removal of the existing wiring for the existing rotors shall be performed prior to
installation of the new aspirating mixers/aerators..
F. The contractor shall provide sufficient and proper equipment for the removal of the
existing rotors and installation of the new aspirating mixers/aerator..
G. The existing rotors shall be removed and the new aspirating aerators/mixers installed,
including stabilization bars and mooring cables. The new operating panels for the aspirating
aerators/mixers shall be mounted on the catwalk, as directed by the Owner and Engineer. All
wiring from the existing plant service panel to the controls shall then be installed and tested. The
motors for the new aspirating aerators/mixers shall be wired and tested.
H. Once the new aspirating aerators/mixers and all electrical equipment have been installed,
the new equipment shall be turned on, with the assistance of the equipment manufacturer. Any
modifications needed shall be made at this time. Once the new equipment is fully installed and
is in proper operation mode, flow to the inner ring of the oxidation ditch shall be restarted.
I The existing rotors, once removed from the oxidation ditch, shall be hauled off of the
WWTP plant site and properly disposed of at an approved facility.
J The shafts and the disks from the removed rotors will be kept by the Town of West
Jefferson. The Contractor shall stack them in the location designated by the Owner. The Town
of West Jefferson will make decisions regarding the disposition of all other parts from the
removed rotors. Those parts designated by the Town of West Jefferson to be of no value to the
Town will be declared scrap and shall be removed by the Contractor to an appropriate scrap yard
or landfill.
Construction Sequence Plan Page 1 of 1

Page 1
GENERAL SPECIFICATIONS
4.0 SITE WORK
4.01 GENERAL
4.01.1 SCOPE OF WORK
(a) All labor, materials, equipment, tools and services required to fulfill the
requirements of this Contract for Site Work shall be furnished and
installed in compliance with the following General Specification, the
Project Specifications, and the Contract Drawings.
(b) The General Specification designated as Section 4.0 Site Work covers
the description of work and materials generally utilized in site work and
erosion control and the specification for performing that work. The
Project Specifications and the Contract Drawings designate specific
work to be performed under the Contract. The inclusion of items of
material or work within this Specification does not necessarily constitute
their use on this Project.
(c) Cited examples are used only to denote the quality standard of
product desired and does not restrict bidders to a specific brand,
make, manufacturer or specific name. They are used only to set
forth and convey to bidders the general style, type, character, and
quality of product desired. Equivalent products will be acceptable.
4.02 CLEARING AND GRUBBING
(a) Clearing and grubbing of the site shall be in full conformance with Section 1.0,
Clearing and Grubbing, of the General Specifications. The limits of clearing and
grubbing and specific details concerning the work shall be as set forth in the
Project Specifications and the Contract Drawings.
(b) All trenches, ditches, and holes resulting from the work of this section shall be
filled with clean earth and compacted to the level of the surrounding elevations.
4.03 GRADING
4.03.1 EXCAVATION
(a) GENERAL
(1) Excavation shall include the loosening, loading, removing,
transporting, and disposing of all materials, wet or dry, necessary to
be removed in order to meet the lines, grades and elevations shown
on the Contract Drawings. The Contractor must assume the risk of
meeting and the Contract price shall include the cost of removal of
quicksand, hardpan, boulders, clay, rubbish, unforeseen obstacles,
underground conduits, gas pipe, drain tile, trees, roots, timber or
masonry structures, railroad tracks, pavements, and sidewalks; and
the delay or damage occasioned by the same, whether these
obstacles are shown on the Contract Drawings or not.
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(2) No claim for any amount of money beyond the Contract price of the
work will be entertained or allowed on account of the character of
the ground in which the excavation is made unless rock as defined
hereinafter is encountered and removed, and only then when rock
appears as a unit price item. The quantities for payment shall be
determined on the basis established in Section 4.08 of this General
Specification.
(3) The location of existing piping and underground utilities, such as
gas mains, water mains, electric duct lines, telephone conduits, etc.,
as shown on the Contract Drawings as approximate. The Owner
does not assume responsibility for the possibility that during
construction utilities other than those shown may be encountered, or
that actual location of those shown may be different from the
locations designated on the Contract Drawings.
(4) At the locations wherein detailed positions of these facilities become
necessary to the new construction, the Contractor shall, at his own
expense, furnish all labor and tools to either verify and substantiate
the record drawing location, or definitely establish the position of the
facilities.
(5) Necessary arrangements shall be made by the Contractor with all
persons, firms, corporations owning or using any poles, pipes,
tracks, or conduits, etc., affected by the construction of this Project,
to maintain and protect such facilities during construction with the
cost of such protection paid by the Contractor and included in the
contract price. In the event that any existing gas pipes, water pipes,
conduits, sewers, tile drains or poles are blocked or interfered with
by the excavation required on this project, the Contractor shall
maintain them in continuous operation, and restore them to the
same condition as they were prior to the start of construction of this
Project, all at no additional compensation.
(6) Excavated material shall not be placed on grass plots unless there is
no other suitable place to put it. Excavated material shall be placed
on pavements or sidewalks only on the explicit approval of the
Engineer.
(7) Sidewalks and pavements must in no case be blocked or obstructed
by excavated material, except on the authorization of the Engineer,
and then only when adequate provisions have been made for a
satisfactory temporary passage of pedestrians and vehicles.
Adequate bridging and planked crossings must be provided and
maintained across all open trenches for pedestrians and vehicles.
Barriers, lights, flares, and watchmen shall be provided and
maintained by the Contractor at all excavations, and embankments
at no additional compensation, as provided in the General
Conditions of the Contract.
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(8) Topsoil shall be stripped and stockpiled on the job site. Topsoil
shall be removed to the depth of fertility, except that in no instance
shall topsoil be stripped below a depth of 12 inches. Topsoil shall
be stripped only when friable. Topsoil shall be free of clay, stones
2" and larger, and debris. Upon completion of construction, topsoil
is to be distributed as set forth in the Project Specifications and
Contract Drawings.
(9) Excavated material shall be deposited so as to interfere as little as
possible with the execution of the whole work or its several parts,
and in such manner that for each purpose the most suitable material
may be placed in its final position but not in a manner to interfere
with the satisfactory carrying out of the work. Such material as
cannot be placed in its final position in fills and embankments shall
be removed to a temporary spoil bank, from which it shall later be
taken and placed in embankment or fills.
(10) Unsuitable and surplus excavated material not incorporated in the
improvement shall be disposed of by the Contractor at his own
expense unless otherwise designated in the Project Specifications,
or on the Contract Drawings.
(11) If private land is used by the Contractor as a spoil site, the
Contractor shall obtain written permission from the Owner or Agent
of the land agreeing to its use for this purpose, and provide the
project Owner with a certified copy of such agreement.
(12) All cuts shall be brought to the grade and cross section shown on
the Contract Drawings, or established by the Engineer, prior to final
inspection and acceptance by the Engineer.
(b) UNDERCUT
(1) Undercut excavation shall be in accordance with Section 225-4 of
the STANDARD SPECIFICATIONS FOR ROADS AND
STRUCTURES, North Carolina Department of Transportation,
published Jan 2002.
(2) The backfilling of undercut excavation shall be in accordance with
Section 4.03.2 (EMBANKMENT) of these General Specifications.
(3) Backfilling of undercut excavation shall not be a pay item unless
specifically called for in the Project Specifications. The cost of
backfilling shall be included in the cost of undercut excavation.
(c) SUBGRADE
(1) The Contractor shall be responsible for preparing and maintaining
the subgrade in a condition suitable for installation of the cohesive
soil liner unless specificially agreed otherwise.
(2) Before beginning construction of the base liner system, the project
engineer shall visually inspect the exposed surface to evaluate the
suitablity of the subgrade and document that the surface is properly
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SECTION 4

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prepared and that the elevations are consistent with the approved
engineering plans.
(3) At a minimum, the subgrade shall be proof-rolled at cut sections
utilizing a fully loaded tandem dump truck or equivalent. If
movement of the subbase is observed under the wheels, the section
of movement will be repaired or removed and replaced with suitable
fill material. This newly placed fill material will then be tested for
proper density and moisture.
(4) All fill soils shall be placed in no more than eight (8") inch thick loose
lifts with a maximum six (6") inches of compacted lift. The soils shall
be compacted to at least 95% of the Standard Proctor maximum dry
density (ASTM D-698) and at or near optimum moisture content
using approved compaction equipment. The fill subgrade shall be
tested for density and moisture content at one (1) test pr six (6")
inches of compacted lift for each 10,000 square feet, or fractions
thereof, of compacted fill. If an area fails, it shall be repaired or
replaced with suitable compacted soils and retested.
4.03.2 EMBANKMENT
(a) GENERAL
(1) Embankment includes the transporting, placing, compacting and
testing of suitable fill material as indicated in the Project
Specifications and on the Contract Drawings. It shall include the
preparation of the areas upon which the embankment is to be
constructed; the formation, compaction, stability, and
maintenance of the embankment; the placing and compacting of
approved material within areas where unsuitable material has
been removed; and the placing and compaction of embankment
materials in holes, pits, and other depressions within the area.
(2) Only suitable materials shall be used in the construction of
embankments and backfills. No frozen material, roots, sod, or
other objectionable material shall be incorporated or placed in
the embankments or backfills. The top 6 inches of any
embankment shall not contain any material larger than will pass
a 3 inch sieve except where written permission is given by the
Engineer.
(b) EMBANKMENT PREPARATION
(1) Before embankment construction is begun, all vegetation and
rubbish shall be removed from the area within the limits of the
embankment. This material shall be disposed of as directed by
the Engineer, or required by these Specifications. Mowed sod
may be plowed and left in place where the height of the
embankment to be constructed is greater than 6 feet, unless
otherwise noted.
(2) Where embankments are to be placed and compacted on
hillsides, or when new embankments are to be compacted
against existing embankments, or when embankments are built
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in part widths, the slopes that are steeper than 4:1 shall be
loosened or plowed to a minimum depth of 6 inches or, if in the
opinion of the Engineer, the nature of the ground is such that
greater precautions should be taken to bind the fill to the original
ground, then benches shall be cut in the existing ground.
(3) All portions of the surface upon which an embankment is to be
placed shall be thoroughly plowed or scarified and all cleavage
planes broken up before beginning the embankment.
(c) EMBANKMENT FORMATION
(1) The material shall be deposited and spread in successive,
uniform, approximately horizontal layers of not more than 6
inches in depth, loose measurement, for the full width of the
cross section, and shall be kept approximately level by the use
of effective spreading equipment. Each layer of the
embankment shall be thoroughly compacted as hereinafter
specified. Hauling shall be distributed over the full form during
the construction of the embankment. The embankment shall be
properly drained at all times.
(2) Where embankments are to be constructed across ground which
will not support the weight of trucks or other hauling equipment,
the first layer of the embankments may be constructed by
dumping successive truck or other equipment loads in a uniform
distributed layer of a thickness not greater than that necessary
to support the trucks or hauling equipment while placing
subsequent layers. The remainder of such embankments shall
then be constructed in layers as above specified.
(3) Where it is necessary to place embankment material in a swamp
or in water, unsuitable surge material shall be kept in a fluid
state or removed to prevent any of this material from being
trapped in or under the embankment.
(4) No rock lifts shall be placed within 2 feet of the finished grade.
No rock or broken pavement shall be placed in embankments
where piles are to be placed or driven.
(5) In valleys, ravines, and at the foot of slopes on side hills, a
limited amount of end or side dumping will be allowed, when
permitted by the Engineer, to form a satisfactory base in the
formation of the embankment, after which the layers shall be
constructed parallel with the finished grade as hereinbefore
specified.
(d) EMBANKMENT COMPACTION
(1) All embankment material shall be compacted as specified herein
unless otherwise stipulated by the Contract or directed by the
Engineer. Compaction equipment used by the Contractor shall
be adequate to produce the required compaction and produce a
uniformly constructed embankment with all layers uniformly
bound to all preceding layers.
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(2) One compaction test shall be made for each 10,000 square feet
of fill three (3) feet deep. Compaction shall be accomplished
with other than heavy machinery where that machinery may
cause damage to facilities. See Section 2.0: Structures -
Excavation and Backfill.
(3) All fill shall be compacted in accordance with method "C" of
ASTM D698 (Standard Proctor Compaction Test) to the
following minimum percentages expressed at a percent of the
maximum density at optimum moisture content:
Under Roadways and --95 percent of maximum dry
parking areas (except) density and 90 pounds
the upper three feet) per cubic foot dry density
and water holding
embankments
Under proposed structures -- 100 percent of maximum
and upper three feet under dry density and 95 pounds
roadways and parking areas per cubic foot dry density
Areas not otherwise --90 percent of maximum dry
specified density
(e) MAINTENANCE
(1) The Contractor shall be responsible during construction and until
final acceptance for the maintenance of all embankments made
under the Contract.
(2) During construction and until final acceptance the Contractor
shall construct temporary or permanent earth berms along the
outer edges of the top surface of the embankment, construct
temporary ditches, shape the embankment surface to provide for
the drainage of surface runoff along and throughout the length of
the embankments, and use any other methods necessary to
maintain the work covered by this section so that the work will not
contribute to excessive soil erosion.
(3) The Contractor shall replace, at no cost, any portion of
embankments which have become displaced or damaged due to
carelessness or neglect on the part of the Contractor.
(4) All embankments shall be brought to the grade and cross section
shown on the Contract Drawings, or established by the Engineer,
prior to final inspection and acceptance.
4.03.3 ROCK EXCAVATION
(a) Wherever the word "Rock" appears, it shall be interpreted to mean any
material encountered of a uniform hardness of three (3) in the scale of
mineral hardness and/or any material which cannot be removed from its
original position with a 300 Hp (minimum), 70,000 lb. working weight
(minimum) dozer with a rock ripping attachment in good condition without
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continuous drilling and blasting will be considered rock, provided that the
Contractor proves by demonstration and photographic evidence that
slate, shale, sandstone or other hard material encountered cannot be
removed with heavy equipment without continuous drilling and blasting.
Other materials shall not be classed as rock, although it may be more
economical to remove same by blasting. Boulders will not be classified
as rock unless larger than 1/2 cubic yard.
(b) Should rock be encountered in the excavation, it shall be removed by
blasting or other approved methods. Where blasts are made, the
excavation shall be carefully covered with suitable brush, timber or
matting to prevent danger to life and property. The Contractor shall
secure all permits required by Law for blasting operations and any
additional hazard insurance required, the cost of such permits and
insurance to be borne by the Contractor. The Contractor shall strip the
rock of over-burden, such stripping to be done in sections and approved
by the Engineer. No blasting shall be done by the Contractor until he has
notified the Engineer and until the necessary cross-sections of the top of
the rock have been taken. No loaded holes shall be left unattended or
overnight without approval from the Engineer. Blasting will not be
permitted within 25 feet of completed pipe lines or structures nor will it be
permitted within 25 feet of any existing structure, pipe line or conduit.
Adequate warning and danger signals shall be given before firing
dynamite explosives. Adequate records shall be kept by the Contractor
of all explosives kept at the site of the work. All explosives shall be used
and handled, stored and exploded in conformance with all state and local
laws and regulations.
(c) Materials classified as "Rock" in these Specifications, if encountered,
shall be excavated to the grade of the bottom of structures to be installed
unless specifically shown on the Contract Drawings to be removed, to a
greater depth. After such rock is removed, the excavation, when
required, shall be backfilled with clean low-void sand or other non-
compressible fine low-void material satisfactory to the Engineer, and
consolidated to place the top surface at the grade established on the
Contract Drawings for the bottom of the structure.
(d) The cost of furnishing, placing and consolidating of such fill material shall
be entered as part of the embankment unit price bid, except in proposals
that do not have unit prices, in which case it becomes part of the Lump
Sum Base Bid. In Proposals that have unit price schedules, the cost of
removing and disposing of rock shall be entered as Rock Excavation. In
Proposals that do not have unit prices, the cost for Rock Excavation shall
become part of the Lump Sum Base Bid.
4.04 FINAL GRADING
(a) The following tolerances from the established grades will be permitted, unless
otherwise specified by the Project Specifications.
1) general site grading: plus or minus 0.20 foot
2) subgrade under structures, roadways and parking areas:
plus or minus 1/2 inch
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(b) Slope grade away from building walls and grade entire areas outside of building to
smooth uniform surface. Finish grades, not otherwise indicated, shall be uniform
levels or slopes between points where levels are given or between such points and
existing finish grades. Abrupt changes in scapes shall be rounded. Should figures
for finish elevations conflict with finish contours shown, the figures shall govern.
(c) Topsoil shall then be spread on the ground areas and shall be smoothed down to a
loose depth of not less than three inches. Areas to receive topsoil shall be scarified
12" deep and all construction debris picked out and hauled off before spreading of
topsoil. After topsoil has been spread, the entire area shall be left smooth and all
stones, roots, debris, etc., measuring 2" and larger shall be removed. Topsoil
required, over the amount in the stockpile, shall be furnished by the Contractor at
the unit cost as set forth in the Contract Documents.
4.05 EROSION AND SEDIMENT CONTROL
4.05.1 GENERAL
(a) The Contractor shall provide erosion and sediment control as detailed in
the Project Specifications and the Contract Drawing, during the period of
construction. The Contractor shall protect and maintain all temporary
erosion and sediment control features required by construction of this
project. Maintenance is to include, but is not limited to, removal of
sediment as it accumulates in and around structures and basins,
maintenance of temporary diversion swales, which will include, regrading
and seeding, if deemed necessary by the Inspector or the Engineer.
(b) Temporary erosion control measures shall include but not be limited to
the use of temporary berms, dikes, dams, drainage ditches, silt basins,
silt ditches, slope drains, structures, vegetation, mulches, mats, netting,
gravel, or any other methods or devices that are necessary. Temporary
erosion control measures may include work outside the right of way or
construction limits where such work is necessary as a result of
construction such as borrow operations, haul roads, plant sites,
equipment storage sites, and disposal of waste or debris. The Contractor
shall be liable for all damages to public or private property caused by
silting or slides originating in waste areas furnished by the Contractor.
Materials for temporary erosion control measures shall have been
approved by the Engineer before being used or shall be as directed by
the Engineer. Erosion control measures installed by the Contractor shall
be acceptably maintained by the Contractor.
(c) The sediment and erosion measures implemented on this project are
subject to periodic review by the State of North Carolina Department of
Natural Resources and Community Development and are to be kept in
operating condition at all times. All erosion control measures are subject
to the requirements of the NC Sedimentation Pollution Control Act.
(d) The sequence of construction shall be as set forth in the Project
Specifications and the Contract Drawings.
(e) At the conclusion of project construction, the Contractor shall completely
remove and dispose of all temporary erosion and sediment control
measures, unless otherwise specified in the Project Specifications of the
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Contract Drawings. Temporary diversion swales shall be regraded to the
lines and grades shown on the Contract Drawings.
(f) During the application of fertilizer and of asphalt binding material, or
other approved binding materials which may cause damage, adequate
precautions shall be taken to prevent damage to traffic, structures,
guardrails, traffic control devices, or any other appurtenances. The
Contractor shall either provide adequate covering or change methods of
application as required to avoid such damage. When damage occurs the
Contractor shall repair it, including any cleaning that may be necessary,
at his own expense.
4.05.2 TEMPORARY SILT FENCE
(a) The Contractor shall construct a temporary silt fence for retention of silt.
The Contractor shall construct the temporary silt fence at locations
shown on the Contract Drawings or as directed by the Engineer.
(b) Fabric shall be a minimum of 32" high, have 14 gauge wire mesh, with 6
inch spacing.
(c) Posts -- Posts must be steel. Steel posts shall be five feet in length and
shall be of the self-fastener angle steel type.
No more than three feet of any post, shall protrude from the ground.
Extra posts if needed, will be considered an incidental addition to the silt
fence and no additional payment will be made for them.
(d) Silt barrier shall be a synthetic filter fabric, or a pervious sheet of
polypropylene, nylon, polyester, or polyethylene yarn, certified by the
manufacturer as meeting the requirements of the NC Department of
Environment, Health and Natural Resources, Division of Land
Resources, "Erosion and Sediment Control Planning and Design
Manual".
(e) The Contractor will be required to maintain the silt fence in a satisfactory
condition for the duration of the project or until its removal is requested
by the Engineer and shall remove and dispose of silt accumulations at
the silt fence when so directed by the Engineer. After vegetation is
established, the Engineer shall determine if the silt fence is to be
removed or to be left in place. If the temporary silt fence is removed, it
will become the property of the Contractor, but the contractor will also be
required to dress up and seed and mulch the area to give a pleasing
appearance as directed by the Engineer.
(f) All dressing up, seeding and mulching, required in the above paragraph
shall comply with this General Specification Section 4.0 and all
applicable requirements of the "Seeding and Mulching" provisions
included herein.
(g) After the temporary silt fence has served its purpose at one location, it
may be used at other temporary locations providing it is still in
satisfactory condition.
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(h) Pay items associated with the use of the temporary silt fence shall be as
allowed by Section 4.08 of this specification.
4.06 PERMANENT COVER
4.06.1 GROUND PREPARATION
(a) Areas to be seeded shall have been cleared, grubbed and graded.
Excessively wet areas shall be allowed to dry; dry areas shall be lightly
sprinkled the day before seeding is accomplished. Operations shall be
accomplished during favorable weather conditions except that no seed
shall be sown on frozen and crusted soil. All seeded areas shall be
mulched.
(b) Ground having a slope steeper than 3:1 shall not be prepared for
seeding; seed, lime and fertilizer shall be applied as specified in
paragraph 4.06.2.(b).
(c) Ground having a slope not steeper than 3:1, shall be plowed to a depth
not less than four inches for shoulders and embankments, not less than
six inches for front and back slopes of cuts and for level areas, and not
less than six inches for waste areas having unstable materials. After
having been plowed, areas shall be disced and harrowed, to the depth
of plowing in a manner which will pulverize the soil. Surface of the
disced and harrowed area shall present a smooth, uniform, loose
appearance; large clods, rock, stumps, roots larger than 1/2 inch in
diameter, and debris shall be removed. If topsoil is to be applied to the
area, such preparation by plowing, discing, and harrowing, is to be done
prior to the application of the topsoil.
(d) With soil material reasonably uniform, apply lime, fertilizer, and nitrogen
as follows:
Lime - Apply at rate of 2 tons per acre, unless
otherwise noted.
Fertilizer - (10-10-10) @ 18-23 lbs./1000 sq. ft.
Nitrogen - Topdress with 30-50 pounds of
nitrogen 30-60 days after planting only
when needed to increase plant growth
and cover.
(e) When hydraulic seeder is to be used, soil preparation is not required.
When conventional seeding is to be done, no preparation is required if
the soil material is loose and has not been sealed by rainfall. On
smooth undisturbed cut slopes, the surface will require pitting, trenching
or scarifying to provide a place for seed to lodge and germinate.
4.06.2 SEEDING
(a) LEVEL AREAS AND SLOPES NOT STEEPER THAN 3:1
(1) Seed shall be sown within 24 hours after ground preparation has
been completed, and with either mechanical seed drills or rotary
hand seeders; seeds of approximately the same size may be
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mixed and sown together. If seeds are sown with rotary hand
seeders, seeded areas shall be lightly raked. Seeded areas shall
be rolled and sprinkled before applying mulch.
(2) Mulch shall be applied to rolled and sprinkled areas by either
hand-spreading or mechanical methods. Applied mulch shall be
neither thinner than 3/4 inch nor thicker than 1-1/2 inches
(approximately 1-1/2 to 2 tons per acre).
(3) All mulched areas (not hydroseeded) shall be tacked at the rate of
150-200 gallons of tack per ton of mulch.
(4) Lime may be spread by any means that will deliver an even
distribution of lime over the area to be seeded. No spotting or
heavy deposits will be allowed. The lime shall be applied at the
rate of 2 tons per acre unless otherwise noted by the Project
Specifications.
(5) Fertilizer shall be applied to limed areas. Fertilizer (10-10-10)
shall be applied at the rate of 18-23 lbs./1,000 sq. feet.
(b) SLOPES STEEPER THAN 3:1
(1) This work shall be accomplished by hydroseeding and liming.
Hydroseeding shall consist of mixing fertilizer, seed, and wood
cellulose fiber mulch with water and applying the mixture as a
slurry. Rate of application shall ensure that the fertilizer (10-10-
10) will be applied at a rate of 18-23 lbs./1,000 sq. feet, that the
seed will be applied at the rate specified in paragraph 4.06.2.(c)
and that the applied mulch will be neither thinner than 3/4 inch
nor thicker than 1-1/2 inches (approximately 1-1/2 to 2 tons per
acre). Slurry shall be spread uniformly over the area and within
one hour after having been mixed, and shall be agitated while
being applied.
(2) Liming shall consist of mixing lime with water and applying the
mixture as a slurry. Rate of application shall ensure that the
lime will be applied at the rate of two (2) tons per acre. Slurry
shall be spread uniformly over the area immediately after
hydroseeding has been accomplished.
(c) APPLICATION
(1) Apply seed uniformly by broadcasting with a cyclone seeder,
close drilling or cultipacker seeder. Normal depths for covering
seed range from 1/4"for rye grass to 1 inch for small grain. Firm
the soil after planting with a cultipacker or suitable equipment
except where seed is applied with a hydraulic applicator.
(2) When a hydraulic seeder is used, the seed and fertilizer are
mixed in a slurry and applied in one operation. The seed must
not remain in the slurry with fertilizer for more than one hour.
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4.06.3 NC DEPARTMENT OF TRANSPORTATION (DOT)- PERMANENT SEEDING
Permanent erosion control shall be performed as follows:
(a) AU disturbed areas shall be dressed to typical sections and plowed to a
depth of 5 inches. The top 2 inches shall be pulverized to provide a
uniform seedbed.
NOTE: Lime should be applied before plowing operation.
(b) Lime, seed, and fertilizer shall be applied with necessary equipment to
give uniform distribution of these materials. The hand-bucket method is
not acceptable. Following are rates and kinds of these materials to be
applied per acre:
75 lbs. Ky 31 Fescue
50 lbs. Pensacola Bahiagrass
50 lbs. Korean Lespedeza
1,000 lbs. 5-10-10 Fertilizer
4,000 lbs. Agricultural Limestone
NOTE: Only tested and certified seed shall be used.
(c) Seeded area shall be cultipacked to firm seedbed and cover seed.
(d) Grain straw shall be applied over seeded areas as a mulch. No bare
ground shall be visible when riding by a mulched area if proper
application is achieved. Thick clumps of straw are not permissible as a
uniform coverage is expected. See 4.06.2(a)(2)for rates.
(e) Mulched area shall be tacked with asphalt sufficient to hold straw in
place. See 4.06.2(a)(3)for rates.
(f) Ditch treatment shall be used in areas where steep grades (more than
10%) could cause ditch erosion. Use of jute mesh, excelsior matting, or
fiberglass roving is acceptable. Ditch treatment should be installed
before mulching operation.
4.07 MATERIALS
4.07.1 TOPSOIL
(a) Topsoil shall be fertile, friable, loamy soil having neither less than two
percent nor more than 30 percent organic matter as determined by loss
on ignition of samples which have been oven-dried to a constant weight
at 212 degrees F. Soil shall be free from subsoil, heavy and stiff clay,
coarse sand, stones larger than two inches in their largest dimension,
toxic amounts of acidic and alkaline substances, roots, brush, sticks,
coarse litter, and other substances which would interfere with mixing,
planting, and maintenance.
(b) Topsoil shall be taken from reasonably well-drained, arable land which
has not supported tobacco growth during the previous three years, and
which is not supporting the growth of Johnson grass or Kudzu. Topsoil
shall be taken from and transported through areas which are free from
infestations of fire ants, white fringed beetles, and Japanese beetles.
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(c) Topsoil shall not be taken below the depth of fertility, except that in no
instance shall topsoil be stripped below a depth of 12 inches. Topsoil
shall not be stripped when it is in frozen, muddy, or non-friable condition.
(d) Topsoil shall be stripped and embanked on-site for replacement on all
graded areas prior to re-seeding.
4.07.2 SEED
(a) Seed shall satisfy the requirements of the North Carolina Department of
Agriculture. No seed will be accepted having a date of test more than six
months prior to the date of sowing.
(b) Seed which has become wet, moldy, and otherwise damaged will not be
acceptable.
4.07.3 NITROGEN
Nitrogen shall be either in granular or liquid form and shall be of commercial
grade. Nitrogen shall be furnished in new, clean, sealed, and labeled
containers; labels shall clearly show manufacturer's name, brand name, and
the weight and guaranteed analysis of contents.
4.07.4 LIME
Lime shall be agricultural type. Total carbonates shall be not less than 85
percent, by weight. Not less than 90 percent shall pass a No. 10 Sieve, and
not less than 25 percent shall pass a No. 100 Sieve.
4.07.5 FERTILIZER
Fertilizer shall be uncaked granular type, and either 10:10:10, 4:12:12,
6:12:12, or 5:10:15. Fertilizer shall satisfy the requirements of the North
Carolina Department of Agriculture.
4.07.6 MULCH
(a) Areas Not Steeper than 3:1
Mulch shall be either threshed rye, oat, or wheat straw or Bermuda grass hay,
and shall have a moisture content of not more than 12 percent. Mulch shall be
free from noxious weed seeds, soil, sawdust, mildew, leaves, and substances
toxic to vegetation. Material for holding mulch in place shall be asphalt or
other approved binding material.
(b) Areas Steeper than 3:1
Mulch shall be wood cellulose fiber, shall contain no germination and growth-
inhibiting factors, shall be green to allow visual metering in its application, and
shall have the property to be evenly dispersed and suspended when agitated
in water. When mulch is sprayed uniformly on the surface of the soil, the
fibers shall form an absorbent cover, allowing percolation of water to the
underlying soil. Mulch shall be packaged in moisture-resistant bags which
have the net weight of the package plainly shown. Properties of mulch shall
be as follows:
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Nominal Values
Properties in Percent
Moisture Content 9.0 + 3.0
Organic Matter 99.2 +0.8
(Oven Dried Basis)
Ash Content 0.8+0.2
pH 4.8 +0.5
Water Holding Capacity
(Grams of Water/100 Grams Fiber) 1150 Minimum
4.07.7 JUTE NET
(a) Jute net shall be heavy, uniform cloth woven of single jute yarn, which if
36 to 48 inches wide, shall weigh an average of 1.2 pounds per linear
yard. The jute net shall be as manufactured by Erosionet, Holdgro,
Weedchek, Curlex or equal.
4.07.8 GEOTEXTILE FABRIC FOR ROADWAYS
(a) Geotextile fabric underlining the access roads shall be a non-woven
needle-punched fabric with the following minimum properties:
1) Weight 8.0 oz/yd2 ASTM D-5261
2) Grab Strength 205 lbs. ASTM D-4632
3) Grab Elongation 50% ASTM D-4632
4) Trapezoidal Tear
Strength 80 lbs. ASTM D-4533
5) Puncture Strength 105 lbs. ASTM D-4833
6) Permittivity 1.2 sec-1 ASTM D-4491
7) Flow Rate 95 gal/min/ft.2 ASTM D-4491
8) Mullen Burst Strength 350 psi ASTM D-3786
9) Apparent Opening
Size (AOS), maximum 0.180mm on us sieve) ASTM D-4751
10) UV Resistance after 500 70% ASTM D-4355
hrs. (%Strength Retained)
4.07.9 GEOTEXTILE FABRICS FOR EROSION CONTROL
Geotextile fabric underlying the rip-rap medium in the diversion ditches,
spillways, etc., shall be woven monofilament fabric with the following minimum
properties.
1) Wide Width Tensile Strength (lbs/ft) 2,700/MD 1,740/CD ASTM D-4595
2) Grab Tensile Strength (Ibs) 370/MD 250/CD ASTM D-4632
3) Grab Tensile Elongation (%) 16/MD 15/CD ASTM D-4632
4) Trapezoidal Tear Strength (Ibs) 100/MD 60/CD ASTM D-4533
5) Mullen Burst Strength (psi) 480 ASTM D-3786
6) Puncture Strength (Ibs) 120 ASTM D-4833
7) Apparent Opening Size(AOS), max. 0.212mm(70 US Sieve) ASTM D-4751
Rev. 9/09 SECTION 4

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8) Percent Open Area (%) 4-6 COE—22125-86
9) Permittivity (sec 1) 0.28 ASTM D-4491
10) Flow Rate (gal/min/ft2) 18 ASTM D-4491
11) UV Resistance after 500 hrs.
(% Strength Retained) 90 ASTM D-4355
12) Mass/Unit Area (ozlyd2) 6.0 ASTM D-5261
13) Thickness (mils) 13 ASTM D-5199
14) Permeability (cm/sec) 0.01 ASTM D-4491
4.07.10 SYNTHETIC MAT LINING FOR DIVERSION DITCHES
Extended-term degradable erosion control blanket shall be constructed with a
70% agricultural straw and 30% coconut fiber matrix and have a functional
longevity of approximately 24 months (NOTE: functional longevity may vary
depending upon climatic conditions, soil, geographic location, and elevation).
The straw and coconut fibers shall be evenly distributed over the entire area of
the mat. The blanket shall be covered on the top with a heavyweight
polypropylene netting having ultraviolet additives to delay breakdown and an
approximate 0.625 x 0.625 inch (1.59 x 1.59 cm) mesh size. The blanket shall
be covered on the bottom with a lightweight polypropylene net having a 0.50
inch x 0.50 inch (1.27 cm x 1.27 cm) mesh size. The blanket shall be sewn
together on 1.50 inch (3.81 cm) centers with degradable thread. The following
list contains further physical properties of the erosion control blanket.
Property Test Method Typical
Thickness ASTM D5199/ECTC 0.34 in (8.64 mm)
Resiliency ECTC Guidelines 75%
Mass per Unit Area ASTM D6475 11.44 oz/yd2 (388 g/m2)
Water Absorption ASTM D1117/ECTC 200%
Swell ECTC Guidelines 30%
Stiffness/Flexibility ASTM D1388/ECTC 1.11 oz-in (12,397 mg-cm)
Light Penetration ECTC Guidelines 11.70%
Smolder Resistance ECTC Guidelines Yes*"
MD Tensile Strength ASTM D5035 205.20 lbs/ft(2.99 kN/m)
MD Elongation ASTM D5035 28.00%
TD Tensile Strength ASTM D5035 152.40 lbs/ft (2.22 kN/m)
TD Elongation ASTM D5035 23.10%
**Material is smolder resistant according to the specified test
MD —Machine Direction
TD—Transverse direction
4.08 MEASUREMENT FOR PAYMENT AND COMPENSATION
4.08.1 GENERAL
If any or all of the work to be performed under this contract is on a unit price
basis, the actual number of units of each unit price item of work actually
performed may be more or less than the number stated in Bidding Schedule of
Rev. 9/09 SECTION 4

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the Proposal, or included in the Contract, but no variation in the Contract unit
price will be made on that account. Payment will be made only for the actual
number of units incorporated in the work, or for the actual number of units of
work performed, and at the Contract unit price for each such unit with
measurement for payment made as defined in the following paragraphs.
Measurement for payment of work done on a unit price basis will be as follows:
4.08.2 CLEARING AND GRUBBING
Unless otherwise specified in the Project Specifications or the Contract
Drawings, the payment for Clearing and Grubbing shall be as specified in
Section 1, Clearing and Grubbing, of these General Specifications.
4.08.3 GRADING
(a) When provided for by a Unit Price Proposal, excavation shall be paid for
at the Contract Unit price per cubic yard, which price shall be full
compensation for the excavation and formation and compaction of
embankments, furnishing water for moisture control, disposal of surplus
materials, preparation and completion of subgrades, shoulders, ditches,
channels, ramps, dikes, and other appurtenances and incidentals
necessary to complete the work and all haul within the specified "Free
Haul Limit".
(b) Embankment shall not be a pay item unless specifically called for in the
Project Specifications. The cost of embankments shall be included in the
cost of excavation, except that required amount, over that which is
available from excavation, which will be paid for at the Contract unit price
per cubic yard of borrow.
(c) When not provided with a Unit Price Proposal, the Contractor shall merge
the cost of all excavation and embankment work with the Lump Sum Base
Bid Item.
(d) The quantity of excavation to be paid for will be the actual number of cubic
yards of materials, measured in their original position and computed by the
average end area method, which have been acceptable excavated in
accordance with Contract Specifications and Drawings. Final cross
sections will be taken after the excavation has been completed except that
the plan typical sections will be used for the final cross sections where, in
the opinion of the Engineer, the work has been constructed in reasonably
close conformity to the plan typical section.
4.08.4 UNDERCUT EXCAVATION
(a) Undercut excavation shall be as defined by Section 4.03.1(b) of this
Specification. When provided for by a Unit Price Proposal, undercut
excavation shall be paid for at the Contract Unit price per cubic yard,
which price shall be full compensation for the excavating and hauling of
this material; for the disposal of the excavated material; for furnishing any
disposal areas that may be necessary; for the backfilling and compacting
of suitable material to replace undercut excavation; and for the furnishing
of all labor, equipment, tools and incidentals necessary to complete the
work.
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(b) Undercut excavation will be measured on a box cut section to widths and
depths as directed by the Engineer.
(c) When not provided with a Unit Price Proposal, the Contractor shall merge
the cost of all undercut excavation work with the Lump Sum Base Bid item
or the Unit Price Item for Excavation.
4.08.5 ROCK EXCAVATION
Rock excavation shall be as defined by Section 4.03.3 of this Specification.
Rock excavation shall be paid for at a unit price rate provided a Unit Price
Proposal is utilized. If the Proposal is not Unit Price, the cost of all rock
excavated and removal shall be merged with the Lump Sum Base Bid Item.
4.08.6 FINE GRADING
This item shall not be paid for as a separate pay item, but shall be included in
the cost of grading.
4.08.7 EROSION CONTROL
Except for the items shown below for"Temporary Silt Fence" other items used
for erosion control shall be paid for at the Contract Unit price per item utilized
in erosion control, unless otherwise specified in the Project Specifications.
4.08.8 TEMPORARY SILT FENCE
When provided for by the proper item in a Unit Price Proposal, the quantity of
temporary silt fence to be paid for under this item shall be the actual number of
linear feet of fence installed in place and accepted. Such price and payment
will be full compensation for the work as described in the above paragraphs,
including but not limited to furnishing all materials, tools, equipment and all
incidentals necessary to complete the work. When a Unit Price Proposal for
this item is not available, all costs for placing, maintaining and removing all
temporary silt fences and deposited silt materials shall become part of the
Lump Sum Base Bid.
4.08.9 SILT ACCUMULATIONS
(a) When provided for by the proper item in a Unit Price Proposal, the
removal and disposal of silt accumulations shall be paid for at the
Contract Unit Price per cubic yard of"Drainage Ditch Excavation".
(b) When a Unit Price Proposal for this item is not available, all cost for the
removal and disposal of silt accumulations shall become part of and be
considered to be incidental to the work covered by "Temporary Silt
Fence."
4.08.10 GRASSING
(a) This item shall be paid for at the contract unit price per square yard. The
Contract unit price shall be full compensation for ground preparation,
furnishing and planting seeds, plant establishment and any incidental
items necessary to obtain an acceptable ground cover.
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(b) All measurement of permanent seeding will be made horizontally.
4.08.11 TESTS
(a) Tests for compaction of cohesive and non-cohesive soils, which shall be
conducted by a testing laboratory approved by the Engineer, shall not be
paid as a separate item; but shall be merged into either the lump sum or
unit price items, as applicable.
(b) All cost of these tests shall be paid by the Contractor.
4.09 NEGLECTED WORK BY CONTRACTOR
If the CONTRACTOR should neglect to prosecute the Work in accordance with the
Contract Documents, including any requirements of the progress schedule, the OWNER,
upon written notice to the CONTRACTOR, after three (3) days from receipt of such
notice by the CONTRACTOR and without prejudice to any other remedy he may have,
may make good such deficiencies and the cost thereof (including compensation for
additional professional services) shall be charged against the CONTRACTOR if the
ENGINEER approves such action, in which case a Change Order shall be issued
incorporating the necessary revisions in the Contract Documents including an
appropriate reduction in the Contract Price. If the payments then or thereafter due the
CONTRACTOR are not sufficient to cover such amount, the CONTRACTOR will pay the
difference to the OWNER.
END OF SECTION 4.
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GENERAL SPECIFICATIONS
5.0 FENCING
5.01 GENERAL
5.01.1 SCOPE OF WORK
(a) This General Specification designated as Section 5.0, Fencing, covers the
description of materials generally utilized in the construction of boundary
fencing and enclosures and the installation of such materials. This General
Specifications shall be used in conjunction with the Project Specifications,
the General Specifications and with the Contract Drawings.
(b) The Project Specifications and the Contract Drawings designate the
specific fencing work and its location and the construction methods to be
used on the furnishing and installation of Fencing under this Contract. The
inclusion of items of material or work within this Specification does not
necessarily constitute their use on this Project.
(c) Where required, the Contractor shall remove and properly store any
existing fencing. After site work, along the existing or proposed fence line,
the fencing shall be put back into place or moved to its new location with
new fencing and gates furnished as required. Pedestrian gates shall have
4-foot openings. Vehicular gates shall be of single swing type having
opening of 24 feet, unless otherwise shown on the Contract Drawings.
(d) The Contractor shall maintain all fences that are encountered while
constructing the project. This maintenance is to include providing
temporary fencing and/or gates that will be for the specific purpose of
preventing livestock from straying. When work is completed all fencing and
gates shall be reconstructed at original location and to equal or better than
original condition.
(e) The requirements for preservation of property and liability are specified
elsewhere in the Contract Documents. Fences which are to remain in place
and which have been damaged by the Contractor, shall be repaired at his
expense. Where a new chain link fence is to abut an existing chain link
fence, the existing p osts may be used if they are the proper height. Bracing
for end and corner posts shall be provided as specified herein.
(f) All clearing and grading for both chain link fences and woven wire fences
shall be as per 5.03.2 (a) of this specification.
(g) Unless otherwise indicated, where fencing is run at the edge of the facility's
property line, the centerline of the posts shall be located nine inches inside
the property line; except that where extension arms are extended outward,
the centerline of the posts shall be 12 inches inside the property line.
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Fencing which is not run at the edge of the facility's property line shall be
located as indicated on the Drawings. Unless otherwise noted, dimensions
indicated shall be to centerline of posts. Fence posts shall be installed so
as to avoid conflict with property line monuments. Before setting fence
posts, the Contractor shall confer with the Engineer regarding the location of
property line monuments.
(h) Where non-climbable type fence is specified, it shall be as manufactured by
the Cyclone Fence Co., American Fence Co., Chain-Link Fence Co. or
equal.
5.02 CONSTRUCTION MATERIALS
Cited examples are used only to denote the quality standard of product desired
and does not restrict bidders to a specific brand, make, manufacturer or specific
name. They are used only to set forth and convey to bidders the general style,
type, character, and quality of product desired. Equivalent products will be
acceptable.
5.02.1 CHAIN LINK FABRIC FENCE
(a) All ferrous fence materials shall be galvanized. Imperfectly galvanized
material, and material upon which serious abrasions of galvanizing occur,
shall not be used. All items of each particular type, such as posts, extension
arms, fabric and accessories shall be of the same manufacture, size, design,
and materials, and otherwise shall be identical.
(b) POST, RAIL, AND BRACE shall be schedule 40 pipe conforming to ASTM
Designation A 120 and to the following requirements:
•
•
•
Outside Diameter:
•
• Location (inches, nominal)
End and Corner Posts
for Fabric Heights:
6 feet and less 2.375
Over 6 feet 2.875
Line Posts for Fabric
Heights:
6 feet and less 1.90
Over 6 feet 2.375
Top Rails and Post Braces 1.660
(c) Gate posts shall be the full height of the fabric, conforming to the following
requirements:
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Width of Outside Diameter
Each Gate Unit (inches, nominal)
Up to and including
six feet 2.875
Over six feet to 13 feet,
inclusive 4.00
Over 13 feet to 18 feet,
inclusive 6.625
Over 18 feet 8.625
(d) ALL POSTS shall be provided with tops designed to fit securely over the
posts, to exclude water, and to bear the top pipe rail and extension arms.
(1) Total length of posts shall equal the length of the portion embedded in
the concrete footing plus the length required above ground. Posts to
be mounted on top of concrete retaining and barrier walls shall be total
length of not less than three feet eight inches, unless indicated
otherwise. Pipe sleeves shall be provided for fence posts to be set in
concrete walls.
(2) Changes in line, where the angle of deflection is five degrees and
more, shall be considered as corners, and corner posts shall be
installed.
(e) EXTENSION ARMS shall be designed to bear, and to anchor securely, three
strands of barbed wire equally spaced and, in addition, shall have adequate
strength to support a vertical load of 150 pounds at the outer end. Extension
arms shall be of the dimensions to carry the barbed wire eighteen (18)
inches above the ground or concrete wall, unless noted otherwise.
Extension arms shall extend inward, outward, or vertically, as indicated; if
not indicated, the arms shall extend outward.
(f) FABRIC shall conform to ASTM Designation A392, and shall be the width
indicated. The galvanized coating on the fabric shall pass 12 one minute
immersions in accordance with the Preece Test, ASTM Designation A239,
without failure, as indicated. The wire used in the manufacture of the fabric
shall be nine (9) gauge. The chain link fence fabric shall be woven into
approximately two inch mesh in such manner that, in a vertical dimension of
23 inches along the diagonals of the openings, there shall be no fewer than
seven meshes. Chain link fence fabric shall be twisted and barbed on top
and bottom edges, unless indicated otherwise.
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(g) ACCESSORIES shall be as specified herein.
(1) Chain link fence shall be fastened to bottom rails.
(2) Galvanized steel or noncorrosive metal bands, if approved by the
Engineer, will be permitted in lieu of tie wires for fastening chain link
fabric to posts and gate frames.
(3) Top rail couplings shall be provided approximately every 20 feet.
Couplings shall be outside sleeve type, and shall be not shorter than
seven (7) inches. Top rails shall pass through the base of line posts
tops to form a continuous brace from end to end of each section of
fence. The top rail shall be securely fastened to the terminal posts with
pressed steel connections. The fabric shall be attached to the rail by tie
wire at a regular spacing which shall not exceed 24 inches.
(4) Bottom rail and bracing rail shall be attached to posts in accordance with
the fence manufacturer's standard method.
(5) Post tops, extension arms, stretcher bars, and other fittings and
hardware shall be of either steel, malleable iron, or wrought iron, and
shall be galvanized in accordance with ASTM Designation A153. Fit-
tings and hardware shall be designed to fasten to the posts and
concrete in the proper manner.
(h) BARBED WIRE may be, at the option of the Contractor, either galvanized
steel, aluminum coated steel, or solid aluminun, except that where aluminum
chain-link fabric is used, galvanized steel barbed wire shall not be used.
The same type of materials shall be used throughout the project. All barbed
wire shall consist of 2 strands of wire with 4 point barbs spaced not more
than 5 inches apart. Galvanized barbed shall be fabricated from 15%gauge
strand wire and shall meet the requirements of ASTM A121. Class 3 coating
will be used. The following provisions will also apply:
(1) The requirements of Section 4, "Base Metal", of ASTM A121 shall not
apply.
(2) The coated barb wire shall have a nominal diameter of 0.058 inch.
(3) The minimum weight of zinc coating shall be 0.45 ounce per square foot
for the barb wire.
Aluminum coated steel barbed wire shall consist of 12% gage line wire
having a minimum tensile strength of 80,000 psi. The barbs shall be 14
gage wire. The aluminum coating shall weigh a minimum of 0.30 oz. per
square foot. Unless otherwise indicated, three strands of barbed wire,
equally spaced, shall be provided on extention arms.
(i) GATES shall be of the widths indicated and shall be constructed of
galvanized, schedule 40 pipe conforming to ASTM Designation A52. Gate
frames shall be cross-trussed with 3/8 inch adjustable truss rods. The
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corners of the gate frames shall be fastened together and reinforced either
with a galvanized malleable iron fitting designed for the purpose or by
welding. Welding shall conform to the provisions of Section 12.0, Miscel-
laneous Metalwork, of the General Specifications, and all welds shall be
ground smooth. Chain link fence fabric, as specified above, shall be
attached to the gate frame with stretcher bars and tie wires as specified for
the fence construction, and suitable intervals shall be provided. The gates
shall be hung by not fewer than two galvanized steel or malleable iron
hinges not narrower than three inches, and which have been designed to
clamp securely to the gate post and to permit the gate to be swung back
against the fence. The bottom hinge shall have a socket to receive the ball
end of the gate frame. The gate hinges shall be designed and arranged to
prevent removal of the gate from the hinges. Gates shall have either a
galvanized steel or malleable iron combination catch of approved design.
Stops to hold gates open, and a center rest with catch, shall be provided.
Locking shall be by padlock and chains, operable from each side of the
fence. Extension arms shall be installed on the end posts to carry strands of
barbed wire in horizontal alignment with the strands of barbed wire on the
adjacent fence.
(j) PADLOCKS shall conform to Federal Specification FF-P-101, Type EPC,
two inch size solid brass case, with chain. One padlock with chain shall be
provided for each gate. Padlocks shall be keyed all alike and master-keyed
to the facilities locks.
(k) CONCRETE shall conform to the requirements of Section 9.0, Concrete, of
the General Specifications, Class C, 2500 psi.
(I) GROUND RODS shall be solid, 5/8 inch in diameter or equivalent, ten feet
long, and of galvanized alloy steel; rod head shall be chamfered.
Galvanizing shall be in accordance with ASTM Designation A153, and at a
rate of not less than two ounces per square foot. Connecting wires shall be
2/0 AWG insulated copper cable. All connecting wires shall be buried.
Ground rods shall be used at all corner posts.
5.02.2 WOVEN WIRE FENCE
(a) BARBED WIRE may be, at the option of the Contractor, either galvanized
steel, aluminum coated steel, or solid aluminum, except that where
aluminum chain-link fabric is used, galvanized steel barbed wire shall not be
used. The same type of material shall be used throughout the project. All
barbed wire shall consist of 2 strands of wire with 4 point barbs spaced not
more than 5 inches apart. Galvanized barbed wire shall be fabricated from
151A gage strand wire and shall meet the requirements ASTM A121. Class 3
coating will be used. The following provisions will also apply:
(1) The requirements of Section 4, "Base Metal", of ASTM A121 shall not
apply.
(2) The coated barb wire shall have a nominal diameter of 0.058 inch.
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(3) The minimum weight of zinc coating shall be 0.45 ounce per square foot
for the barb wire.
Aluminum coated steel barbed wire shall consist of 121/2 gage line wire
having a minimum tensile strength of 80,000 psi. The barbs shall be 14
gage wire. The aluminum coating shall weigh a minimum of 0.30 oz. per
square foot.
(b) WOVEN WIRE shall conform to ASTM A116. The fence fabric shall be 47
inches high, with 10 horizontal strands. The strands shall be spaced 3
inches apart at the bottom and 8 inches apart at the top with progressive
spacing between. Vertical strands shall be spaced at 6 inch intervals.
Either of the following styles and coating classes may be used:
(1) Style 1047-6-9 (all horizontal and vertical strands of wire to be 9 gage),
with Class 2 zinc coating.
(2) Style 1047-6-11 (top and bottom horizontal strands of wire to be 9 gage,
all other strands to be 11 gage), with Class 3 zinc coating.
Brace wire shall be 9 gage with a Class 2 zinc coating.
(c) TIMBER POSTS AND BRACES
(1) All timber posts and braces shall be of treated southern pine. Posts and
braces may be either round or square, at the option of the Contractor,
provided that the same shape is used throughout the project for both the
posts and the braces. Post and brace sizes shall be as shown on the
Contract Drawings in inches. The size refers to the diameter for round
pieces, or to the edge dimension for square pieces. Square posts and
braces shall be fully dressed S4S. An allowable tolerance of 1/2 inch
scant for square pieces will be permitted from the dimensions called for
on the Contract Drawings.
Round wood posts and braces shall be cut from sound solid trees, free
from short or reverse bends in more than 1 plane. The post or brace
shall not deviate more than 1 inch at any point from a straightedge held
longitudinally against the piece.
All posts shall be free from ring shake, season cracks more than 1/4 inch
wide, and splits in the ends. They shall contain no unsound knots.
Sound knots will be permitted provided the width of the knot does not ex-
ceed 1/3 the diameter of the post where it occurs. Groups of knots or
any combination of defects which will impair the strength of the piece will
not be permitted. The pieces shall show not less than 3 annual rings per
inch and not less than 30 percent of summer wood.
A tolerance of 1 inch plus and 1/2 inch minus will be allowed for the
diameter of round posts and braces, measured at the small end after
peeling. Where they are out of round, this tolerance shall apply to the
smaller diameter, and the larger diameter shall not exceed the smaller
by more than 20 percent. The maximum rate of increase in diameter at
the butt shall be 11A inches in 10 feet.
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A minus tolerance of 1 percent will be allowed in the length of both
round and square posts. The ends shall be cut square.
All sawed treated timber and lumber shall be graded in accordance with
the current grading rules of the Southern Pine Inspection Bureau.
Grade marked lumber will not be required. All treated timber and lumber
will be inspected by the Engineer.
Sawed fence posts and braces no larger than 4 inches by 4 inches shall
conform to the requirements for Structural Light Framing, Grade No. 2.
Sawed fence posts and braces larger than 4 inches by 4 inches shall
conform to the requirements for Timbers, Grade No. 2 SR.
Lumber for fence posts shall be fully dressed S4S.
An allowable tolerance of 1/2 inch scant will be permitted from nominal
dimensions of sawed and dressed lumber.
All treated timber and lumber shall be given a preservative treatment in
accordance with Standard C1 of the American Wood-Preserver's
Association. The required retention of chromated copper arsenate is
specified on the oxide basis. Preservative retention will be determined
by the assay method.
After treatment, the timber and lumber shall be handled carefully with
rope slings, without sudden dropping, breaking of fiber, bruising, or
penetrating the surface with tools or hooks.
Treated timber and lumber will not be accepted for use unless it has
been inspected and found satisfactory, both before and after treatment,
and shall be delivered at the project site in a condition acceptable to the
Engineer.
Treating plants shall have laboratory facilities at the plant for use of the
inspector in accordance with Standard C1 of the American Wood-
Preserver's Association.
All timber preservatives shall conform to the requirements of Standard
C1 of the American Wood-Preserver's Association.
Standard C2 of the American Wood-Preserver's Association will be
applicable to the treatment of sawed posts and braces, except that the
required retention of preservative shall be as shown below.
Standard C5 of the American Wood-Preserver's Association will be
applicable to the treatment of sawed posts and braces, except that the
required retention of preservative shall be as shown below.
Standard C5 of the American Wood Preserver's Association will be
applicable to the treatment of round posts and braces, except that the
required retention of preservative shall be as shown below.
Prior to treatment, round posts and braces shall be peeled cleanly for
their full length, all bark and innerskin removed, and all knots and
Rev. 04/09 SECTION 5

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projections trimmed flush with the surface of the surrounding wood.
Machine peeling will be permitted. The ends shall be cut to the proper
length before treatment.
All fence posts and braces shall be given a preservative treatment of
either creosote, pentachlorophenol, or chromated copper arsenate. The
same type of preservative shall be used throughout the entire length of
the project.
Minimum retention for creosoted sawed timber shall be 10 pounds of
preservative per cubic foot of wood. Minimum retention for sawed timber
treated with pentachlorophenol shall be 0.5 lb. of dry chemical per cubic
foot of wood. Minimum retention for sawed timber treated with
chromated copper arsenate shall be 0.5 lb. of dry chemical per cubic
foot of wood.
Minimum retention for creosoted round timber shall be 8 pounds of
preservative per cubic foot of wood. Minimum retention for round timber
treated with pentachlorophenol shall be 0.4 lb. of dry chemical per cubic
foot of wood.
(2) OPTIONAL STEEL POSTS AND BRACES - The Contractor will be
permitted to use steel posts and braces for woven wire fence in lieu
of timber posts and braces. The same type of fence post and brace
shall be used throughout the project.
Steel posts used in lieu of 4 inch timber posts shall be a standard
studded T section 7'-6" long designed exclusively for use as a fence
post and shall be equipped with a metal anchor plate securely
attached to the post. The T posts shall weigh 1.33 lb. per linear foot
exclusive of the weight of the anchor plate, and shall have a total
weight, including anchor plate, of 10.65 lb. Nominal dimensions of
the T post shall be 1-3/8 inches wide and 1-3/8 inches deep. A
tolerance of plus or minus 3/16 inch will be permitted from these
nominal dimensions. The anchor plate shall be sufficiently sturdy to
withstand the strain of driving with no loss of effectiveness, and shall
have a minimum area of 14.0 square inches.
Steel posts used in lieu of 5 inch timber posts may be either tubular
posts or angle posts. They shall be 8'-0" long and shall be
embedded in a concrete anchor at least 3'-3" deep and 10 inches in
diameter. Tubular posts shall be fitted with ornamental tops which
shall fit over the top of the post to cap against moisture. The tubular
posts shall be fabricated from 2 inch diameter Schedule 40 gal-
vanized steel pipe meeting the requirements of ASTM A120. Angle
posts shall be fabricated from angle sections measuring 2%! x 2'/z'x
1/4", with a plus or minus tolerance of 1/16 inch on the 2'/ inch
dimension and 0.015 inch on the 1/4 inch dimension, and weighing
4.10 lbs. per foot. Steel braces shall be used with steel posts and
may be either tubular braces or angle braces to match the posts.
The braces shall be furnished with suitable metal connections to
fasten them securely to the posts. Tubular braces shall be
fabricated from 1% inch diameter Schedule 40 galvanized steel pipe
meeting the requirements of ASTM A120. Angle braces shall be
Rev. 04/09 SECTION 5

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fabricated from angle sections measuring 2" x 2" x 1/4", with a plus
or minus tolerance of 3/64 inch on the 2 inch dimension and 0.010
inch on the 1/4 inch dimension, and weighing 3.19 lb. per foot.
A 5 percent minimum weight tolerance will be allowed for all posts
and braces.
All steel posts and braces other than tubular members shall be
galvanized in accordance with the requirements of ASTM A123.
(d) CONCRETE - All concrete anchors shall be of Class C concrete
meeting the requirements of Section 9.0. In lieu of Class C
concrete, pre-mixed commercially bagged dry concrete mix may be
used provided the concrete meets the minimum strength require-
ments for Class C concrete when mixed with the quantity of water
shown on the instructions printed on the bag.
(e) GATES - Gates shall be constructed of aluminum or galvanized
steel formed section. The gates shall be of riveted construction.
The gate shall be equipped with a positive latching mechanism.
5.03 CONSTRUCTION METHODS
5.03.1 CHAIN LINK FABRIC FENCE
(a) LINE POSTS shall be spaced on not more than 10 foot centers. In
determining the post spacing, measurements will be made parallel to the
slope of the natural ground, and all posts shall be placed in a vertical
position except in unusual locations where, in the opinion of the Engineer, it
would be more satisfactory to place the posts perpendicular to the slope of
the ground. Where fencing is installed on the top of concrete walls, the
posts shall be sleeved and grouted.
(b) FOOTINGS shall be not smaller than nine inches in diameter and 36 inches
deep, unless indicated otherwise. The top of concrete shall be crowned to
shed water. Concrete shall be allowed to cure not fewer than 72 hours be-
fore further work is done on the posts. Care shall be taken to ensure
alignment and plumb installation. Galvanized steel eye bolts shall be
embedded in the top of the footings, adjacent to the posts, to receive the
bottom tension wire.
(c) BRACING of end, corner, and gate posts shall be to the nearest line post,
with galvanized diagonal or horizontal braces used as compression
members, and with 3/8 inch diameter steel truss rods with turnbuckles used
as tension members. Line posts shall be braced horizontally and trussed in
both directions as above specified, at the indicated intervals.
(d) FABRIC shall be fastened to the outer face of the posts except that, where
a property owner's existing fencing occurs directly against and adjacent to
the facility's fencing, the Contractor shall fasten chain link fabric to the inner
face of posts. The fabric shall be stretched and securely fastened to the
posts, rails, and bottom tension wire with either tie wires or metal bands.
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Tension wires shall be not longer than 500 feet; tension wires shall be
installed from braced line posts to braced line posts. The bottom tension
wire shall be installed on a straight grade between posts by excavating the
high points of ground. In no case will filling of depressions be permitted.
The fabric shall be fastened to end, corner, and gate posts with 1/4 inch by
3/4 inch stretcher bars and not less than 1/8 inch by 3/4 inch stretcher bar
bands spaced at one foot intervals. The fasteners shall be spaced at
approximately 14 inches on pipes and at approximately 18 inches on
tension wires. The bottom tension wire shall be not more than one inch
from the surface of the ground or top of concrete, except where the special
closures at ground depressions are required.
(e) BARBED WIRE shall be installed on the extension arms. The method of
securing wire shall be positive and complete at each contact. Each wire
shall be pulled taut, and the entire assembly shall be made positive. Wire
shall be attached to end, corner, pull, and gate posts with wire stretching
bands.
(f) METAL CLOSURES shall be provided where finish ground surface is more
than one inch below the bottom tension wire. The steel angle shall be bolted
to the fence posts, and the reinforcing rods and bracing members shall be
installed. Rods shall be installed vertically. Where drainage ditches cross
the fence line, concrete pavement and a bar grille of steel reinforcement
shall be provided.
(g) At all gates utilized in conjunction with paved roadway or drives, the ground
surface shall be paved for the full width of the gate. Paving shall be either
asphaltic concrete or Class B, 3500 psi, concrete as required by the
Contract Drawings. The paving shall be not further than two inches below
the bottom of the gate, and shall be sloped to drain away from the gate on
both sides.
(h) At each location where a power line carrying more than 600 volts passes
over a fence, a ground rod shall be installed at the nearest point directly
below the point of crossing. Where possible, the rod shall be driven 10 feet
into the ground. In rocky soil, the rod may be driven slanted to ensure 18
inches of cover at the tip. If solid rock is encountered, two ground rods may
be installed at the nearest post on each side of the power line crossing
where soil conditions will permit. A length of copper wire shall be attached
to the fence and the ground rod with suitable clamps.
(i) Connecting wire shall be thermit welded to the posts and ground rods; welds
shall be coated with one coat of hot tar enamel.
(j) A meggar test shall be performed, between the fence and absolute ground,
at a point midway between every ground rod. The resistance between the
fence and absolute ground shall be measured, with a meggar, not less than
48 hours after rainfall or artificial watering. The resistance value shall not
exceed two ohms.
(k) The Contractor shall place neither manufacturer's nor other signs on the
fence.
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5.03.2 WOVEN WIRE FENCE
(a) CLEARING AND GRADING - The Contractor shall limit his clearing to only
that absolutely necessary to erect a clear fence line. Such clearing shall
include satisfactory removal and disposal of all trees, brush, stumps, or
other objectionable material. The fence shall be erected to conform to the
contour of the ground. The bottom of the fabric or wire shall be not more
than 6 inches above the natural ground, except where the Engineer directs
that ditches and depressions are to be spanned by using extra length posts
in conjunction with additional barbed wire installed between the bottom of
the fence wire or fabric and the ground surface. When determined
necessary by the Engineer, grading along the fence line shall be done to
meet this requirement provided that no obstructions to proper drainage are
created.
(b) SETTING POSTS AND BRACES - All posts shall be set and maintained in a
vertical position. Line posts may be hand set or set with a post driver. If
hand set, all backfilled material shall be removed and replaced prior to final
acceptance.
Posts shall be set in concrete anchors when required by the Contract
Drawings or where required by soil conditions to maintain the position and
alignment of the post. Forms will not be required for the concrete. The top
of the concrete shall be troweled to a smooth finish and sloped to drain away
from the post. The anchors shall be at least 3 days old before any load is
placed on the post.
Where rock or concrete pavement or slabs occur within the required depth to
which fence posts shall be erected, a hole of a diameter slightly larger than
the largest dimension of the post shall be drilled in the rock or concrete and
the posts grouted in. The depth of post embedment shown on the Contract
Drawings will not be required and the post may be shortened as necessary,
provided the post is embedded within the rock or concrete pavement or slab
for a minimum depth of 12 inches.
Where extra length posts are needed, the posts shall not be fabricated by
welding short sections of posts together to provide a longer post.
Line braces shall be placed at the end of each roll or piece of woven wire.
Pieces of woven wire less than 100 feet in length shall not be used except
where permitted by the Engineer. When the Engineer permits the use of
such short pieces of woven wire, the Contractor shall furnish and install at
no cost to the Owner the additional brace posts and braces required except
that the Contractor may use splicing sleeves which have been approved by
the Engineer in lieu of providing such brace posts and braces.
(c) WOVEN WIRE - Woven wire fabric shall be stretched taut and securely
attached to each post with a staple in each line of wire and as many
additional staples as required to firmly secure the wire at the location and
elevation shown, When woven wire is attached to metal posts, at least 5
clips shall be used to each post to fasten the individual strands of wire to the
Rev. 04/09 SECTION 5

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post except where wrapping of the strand around the post is required. The
stretching shall be done with an approved stretcher that will produce equal
tension in each line of wire.
At each end or gate post, at the center post in each line brace, and at corner
post except as otherwise shown on the Contract Drawings, all vertical
strands of wire shall be cut out and each horizontal strand of wire shall be
wrapped around the post and securely fastened by winding the end around
the strand of wire near the post.
Splicing of fabric between the posts of a brace post assembly will not be
permitted. Splicing between other posts will not be permitted, unless the
splicing sleeves that are intended to be used have been approved by the
Engineer.
Barbed wire used in conjunction with woven wire fabric shall be pulled taut
and securely attached to each post by methods described for woven wire.
Splicing of barbed wire between posts will not be permitted.
Additional barbed wire shall be installed as shown on the Contract Drawings.
5.04 METHOD OF PAYMENT
5.04.1 CHAIN LINK FABRIC FENCE
(a) Quantities of chain link fence will be measured by the linear foot for each
type of fence indicated, complete in place, from actual measurements.
Such measurements shall be made parallel to the ground slope along the
line of the completed fence, with deduction for the widths of openings.
Gates shall be measured per gate unit for each individual size. When more
than one gate is placed in an opening, each single unit placed will be
counted as a gate. A gate unit complete in place shall include one gate
with all necessary fittings, hardware, padlocks, gate posts with braces, and
necessary material for electrical grounding where required.
(b) Items of work, measured as specified above, will be paid for at the Contract
unit price per linear foot for each type of chain link fence and the Contract
unit price per each size of gate. The size of each gate is designated in the
Bid Form and on the Contract Drawings. Full compensation for clearing the
fence line and disposing of the resulting material; excavating high points in
the existing ground between posts; excavating for posts and braces and
furnishing and placing portland cement concrete footings; providing
closures at ground depressions and drainage ditches, pavement at gates,
ditches, and existing cross fences; and electrical grounding; will be
included in the prices paid for the fence, and no additional payment will be
allowed therefore. The prices paid for fencing and gates shall include full
compensation for furnishing all labor, materials, tools, equipment, and
incidentals, and for doing all work involved in constructing chain link fences
and gates, complete in place, as indicated.
5.04.2 WOVEN WIRE FENCE
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(a) FENCE - The quantity of fence to be paid for shall be the actual number of
linear feet of fence, measured in place from center of end post or gate post
to center of end post or gate post exclusive of gate sections, which has
been completed and accepted.
(b) POSTS - The quantity of fence posts to be paid for will be the actual
number of each of the several sizes and kinds of posts actually installed on
the project, including timber posts erected as barriers at driveways and
entrances. Where the Contractor has elected to use pieces of woven wire
shorter than 100 feet in length, as permitted by subsection 5.03.2 (b), on
the condition that he furnish and install at no additional cost to the Owner
line braces at the ends of such short pieces, the quantity of timber fence
posts shall also include the number of line posts which have been made
unnecessary by such line braces but shall exclude the posts used in the
line braces.
The quantity of metal terminal posts to be paid for will be the total number
of all end, corner, and brace posts actually installed on the project.
For timber posts, the actual length in linear feet of variable length and extra
length posts shall be measured as placed and converted to an equivalent
number of standard length posts of the same size for which a pay item has
been established. For extra length metal posts, the actual length of post in
place in excess of the standard pay length for each post shall be measured
in linear feet, and one half of such length shall be converted to an
equivalent number of standard length posts of the same size for which a
pay item has been established. In converting to equivalent numbers of
standard length posts, any fractional portion of the post remaining from the
division of a total number of linear feet by a standard post length shall be
considered as equal to one post.
(c) ADDITIONAL BARBED WIRE -The quantity of additional barbed wire to be
paid for will be the number of linear feet of this wire installed in the Work,
complete and in place. Measurement of additional barbed wire shall be
made along each strand after the installation has been completed. No
measurement will be made of any wraps, nor will measurement be made of
the upper or lower continuous strand of barbed wire that is erected as part
of woven wire fence.
(d) GATES - The quantity of gates to be paid for will be the number of gates
actually erected on the project. Double gates will be measured as one gate.
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GENERAL SPECIFICATIONS
12.0 MISCELLANEOUS METALWORK
12.01 GENERAL
12.01.1 SCOPE OF WORK
(a) All labor, materials, equipment, tools, and services required for the
furnishing and installation of miscellaneous metalwork required under
this Contract shall be furnished and installed in compliance with the
following General Specifications, the Project Specification and the
Contract Drawings.
(b) This General Specification designated as Section 12.0, Miscellaneous
Metalwork, covers the description of materials generally utilized in
miscellaneous metalwork installations and the installation of such
materials. The Project Specifications and the contract Drawings
designate the specific work, the materials, and the details on the
furnishing and the installation of all Miscellaneous Metalwork. The
inclusion of items of material or work within this Specification does not
necessarily constitute their use on this Project.
12.01.2 SHOP DRAWINGS
(a) The attention of the Contractor is directed to the provisions in the
General Conditions of the Contract requiring the submission to the
Engineer of shop and setting drawings. On all miscellaneous metal
work, such submission shall include shop drawings for all work fabricated
off of the construction site and must conform to the exact description
named in the General or Project Specification or in the Schedules on the
Contract Drawings.
(b) Shop and Setting Drawings and manufacturer's data for all material
included under this section shall show the kind of material, sizes of
metal, method of assembly, hardware and anchorage or connection with
other work.
12.01.3 VERIFICATION OF CONTRACT DRAWINGS
(a) The Contract Drawings indicate the size and arrangement for
miscellaneous metal work. In the event it should become necessary to
change the location of the work due to construction details, the
Contractor shall consult with the Engineer before making any such
changes.
(b) The Contractor shall consult with other trades in advance and shall make
all the necessary provisions for the installation of their work.
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12.01.4 STANDARDS
Where materials and methods are indicated in the following Specifications as
being in conformance with a standard specification, it shall refer in all cases
to the latest edition of the specification and shall include all interim revisions.
Listing of a standard specification without further reference indicates that the
particular material or method shall conform with such listed specification.
Where manufacturer(s) or trade names appear, it is only to represent a
level of quality expected and in no way is to be construed to preselect
the Contractor's supplier or equipment. It does not restrict bidders to a
specific brand, make, manufacturer or specific name. They are used
only to set forth and convey to bidders the general style, type,
character, and quality of product desired. Equivalent products will be
acceptable. All equipment shall conform to the latest revised applicable
OSHA Standard.
12.02 CONSTRUCTION MATERIALS
12.02.1 GENERAL
(a) All materials and equipment shall be furnished by an established and
reputable manufacturer or supplier. All materials and equipment shall be
new and shall be of first class ingredients and construction, designed
and guaranteed to perform the service required and shall conform with
the following Specifications or shall be the product of the listed
manufacturer's or similar and equal thereto.
(b) Proper handling and storage techniques must be exercised with all
material to prevent the inclusion of foreign materials or damage by water,
frost or breakage. Perishable materials shall be placed on a platform
raised clear of the adjoining ground and protected from damage with a
weatherproof cover.
(c) The Contractor shall verify conditions in the field, be responsible for
proper fitting together of his material and shall check all measurements
in the field, as required for work fabricated to fit job conditions.
(d) Before starting work, the Contractor shall examine adjoining work on
which his work is in any way dependent for perfect workmanship and fit.
All corrective work shall be performed to the adjoining work as may be
necessary to produce work perfect in all respects.
(e) The Contractor shall make all necessary provisions for work included
herein to accommodate work specified under other Sections.
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12.02.2 CONSTRUCTION MATERIALS ASTM
Designation
(a) Aluminum Castings-Anodized finish B26, Alloy G4A,
to match balance of aluminum materials Condition F
(b) Aluminum Bars, Rods, Shapes B221 or B308
(c) Aluminum Sheets, Plates
Mill Finish B209, Alloy 1100
Anodized Finish B209, Alloy 3003
(d) Aluminum Tubing B210
(e) Bronze Castings- Color to match other
architectural bronze B147
(f) Bronze Bolts, Nuts, Screws B16
(g) Bronze Rods, Bars, Shapes B124
(h) Bronze Sheets, Plates B36
(i) Bronze Tubing B135
(j) Bronze Pipe B43
(k) Copper Sheets B152, Hard Temper
(I) Cast Iron A48
(m) Malleable Iron, White fully annealed A47
(n) Sheet Iron A109
(o) Stainless Steel Sheets A167, Type 302B
Exposed Sheets No. 4 Finish
Normally invisible sheets for protection
against weather and corrosion No. 1 Finish
(p) Stainless Clad Steel with A264
20% Cladding No. 4 Finish
(q) Steel Pipe A120
(r) Structural Steel A36
(s) Structural Steel Tubing ASTM A501
Seamless, Hot Formed
(t) Steel Pipe A53
(u) Cast Steel A27
(v) Genuine Wrought Iron Rods, Bars A207
(w) Genuine Wrought Iron Plates A42
(x) Genuine Wrought Iron Sheets A162
(y) Genuine Wrought Iron Pipe A72
(z) Zinc Coating A123
(aa) Concrete Inserts:
Threaded or wedge type, galvanized ferrous castings, either malleable iron ASTM
A47 or cast steel ASTM A27. Provide bolts, washers and shims as required, hot-
dipgalvanized, ASTM A153.
(ab) MASONRY ANCHORAGE DEVICES
Expansion Shields, FS FF-S-325
(ac) TOGGLE BOLTS
Tumble-wing type, FS FF-B-588, class and style as required.
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(ad) FASTENERS
1. GENERAL
Provide zinc-coated fasteners for exterior use or where built into exterior
walls. Select fasteners for the type, grade and class required.
2. BOLTS AND NUTS
Regular hexagon head type, ASTM A307, Grade A
3. LAG BOLTS
Square head type, FS FF-B-561
4. MACHINE SCREWS
Cadmium plated steel, FS FF-S-092
5. WOOD SCREWS
Flat head carbon steel, FS FF-S-111
6. PLAIN WASHERS
Round, carbon steel, FS FF-W-92
7. LOCK WASHERS
Helical spring type carbon steel, FS FF-W-84
8. SELF DRILLING ANCHORS
"Red Head" as manufactured by Phillips Drill Company, Inc., Hilti
Fastening Systems, Ramset, or equal.
12.02.3 FABRICATION
(a) GENERAL
(1) Fabricated metal work shall be well formed to shape and size,
with sharp lines and angles. Shearing and punching operation
shall leave clean, true lines and surfaces. All permanent
connections shall be welded or riveted. Assembling by the use
of bolts or screws shall be avoided when possible, but if used,
bolts and screws shall be screwed up tight with the threads
nicked to prevent loosening. All curved work shall be evenly
sprung.
(2) Castings shall be sound and free from warp, holes or other
defects that impair their strength or appearance. Exposed
surfaces shall have a smooth finish and sharp, well defined
lines and arises. Machine joints, where required, shall be
milled to a close fit. Necessary rabbets, lugs and brackets
shall be provided so that work can be assembled in a neat and
substantial manner.
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(3) All fastenings shall be concealed where practicable, or if
impractical other methods of fastening shall be submitted to
the Engineer for approval. The thickness of metal and details
of assembly and supports shall give ample strength and
stiffness. Joints which will be exposed to the weather when
erected shall be formed to exclude water. Holes and
connections for the work of other trades shall be provided.
(4) Structural steel fabrication of miscellaneous metalwork items
shall conform with the AISC "Specification For The Design,
Fabrication and Erection of Structural Steel For Buildings
(Riveted, Bolted and Arc-Welded)." All steel work which is to
be galvanized shall be fabricated in accordance with ASTM
A143, A384 and A385.
(5) All welding shall be in accordance with the "Standard Code for
Arc and Gas Welding in Building Construction" of the American
Welding Society. Welding shall be continuous along entire
area of contact, except where tack welding is permitted. Tack
welding will not be permitted on exposed surfaces. All
exposed welds shall be ground smooth and brushed clean.
(6) Supplementary parts necessary to complete each item, though
such work is not definitely shown or specified, shall be
included. All miscellaneous metalwork where not shown in
detail on the Contract Drawings shall be designed by the
Fabricator in accordance with good accepted standard
practice.
(7) Use material of size and thickness shown or, if not shown, of
required size and thickness to produce strength and durability
in finished product. Work to dimensions shown or accepted on
shop drawings, using proven details of fabrication and support.
Use type of materials shown or specified for various
components of work.
(8) Form exposed work true to line and level with accurate angles
and surfaces and straight sharp edges. Ease exposed edges
to a radius of approximately 1/32" unless otherwise shown.
Form bent-metal corners to smallest radius possible without
causing grain separation or otherwise impairing work.
(9) Weld corners and seams continuously, complying with AWS
recommendations. Grind exposed welds smooth and flush, to
match and blend with adjoining surfaces.
(10) Form exposed connections with hairline joints, flush and
smooth, using concealed fasteners wherever possible. Use
exposed fasteners of type shown, or if not shown, Phillips flat-
head (countersunk) screws or bolts.
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(11) Provide for anchorage of type shown, coordinated with
supporting structure. Fabricate and space anchoring devices
as shown and as required to provide adequate support for
intended use.
(12) Cut, reinforce, drill and tap miscellaneous metal work as
required to receive finish hardware and similar items.
(13) Use hot-rolled steel bars for work fabricated from bar stock
unless shown or specified to be fabricated from cold-finished
or cold rolled stock.
(b) STAINLESS STEEL WORK
(1) Only the proper type of stainless steel electrodes or welding
rods shall be used. All welded joints shall be ground and
polished and made imperceptible. Welds shall be of such
character as to eliminate injury to stainless steel parts in
appearance, strength and resistance to corrosion.
(2) All scratches, marks, pits and other blemishes on exposed
surfaces incurred during fabrication of the material shall be
removed by grinding and polishing until the entire surface
possesses the same finish as the adjacent work.
(c) ALUMINUM WORK
Type and procedure for welding of aluminum shall be as established
and recommended by the producer of the castings, sheets, bars,
rods, shapes, etc., to be used in the finished metal work. All welded
joints shall be ground and polished and made imperceptible.
(d) BRONZE WORK
Only the proper type of bronze electrodes or bracing rods shall be
used. All welded joints shall be ground and polished and made
imperceptible.
(e) COPPER WORK
All copper work shall be fabricated of the weight indicated on the
Contract Drawings, with concealed welds and fastenings. The
assembled work shall be polished after fabrication.
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(f) GALVANIZED STEEL WORK
(1) Provide zinc coating for those items shown or specified to be
galvanized as follows:
(a) ASTM A 153 for galvanizing iron and steel hardware.
(b) ASTM A 123 for galvanizing rolled, pressed forged steel
shapes, plates, bar and strip 1/8" thick and heavier.
(c) ASTM A 386 for galvanizing assembled steel products.
(2) GALVANIZING REPAIR PAINT
High zinc dust content paint for re-galvanizing welds in galvanized
steel, complying with military Specifications MIL-P-21035 (Ships).
(g) SAFETY TREAD NOSINGS
Safety tread nosings shall have an abrasive surface for treads and
the down side of landings and platforms of poured in place concrete
stairs shall have safety tread. The nosings for concrete stairs and
steps shall be 8 inches shorter than the treads to which they are to
be applied and designed so that after installation the top surface will
be flush with the top surface of treads and platforms and fastened
thereto with countersunk brass bolts or screws to the anchors set in
concrete.
(h) PIPE TRENCH COVERS AND FRAMES
Pipe trench covers and frames shall consist of 3" x 2" x 1/4 inch steel
angle frames with 1" x 1/4 inch steel anchors spaced approximately
18 inches on center on all sides for embedding in concrete.
Continuous stops shall be welded to the sides of the frames. Covers
shall be fabricated of 1/4" minimum steel plate set loose in sections
of not over four (4) feet long with stiffener angles as required. The
top of the plate and frame shall finish flush with the finished floor.
(i) PIPE RAILINGS
(1) GENERAL
(a) Railings shall be fabricated to the details indicated on the
Contract Drawings, using flush type fittings with joints
welded and the welds ground smooth. Handrails to be
secured to walls shall be furnished with cast iron brackets to
be spaced ten (10) inches from the ends, and not over five
(5) feet apart. The exposed ends of these handrails shall be
fitted with screw plug finials.
Rev. 3/09 SECTION 12

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(b) Fabricate pipe railings to dimensions and details shown, with
smooth bends and welded joints ground smooth and flush.
Where details are not shown, use 1-1/2" steel pipe with top
of top rail 42" above floor, or 32" above stair treads
measured vertically at the stair riser line.
(c) Adjust railings prior to anchoring to ensure matching
alignment at butting joints. Space posts not more than 8' on
centers, unless otherwise shown. Plumb posts in each
direction. Secure posts and rail ends to building construction
as follows:
(1) Anchor posts in concrete by means of pipe sleeves set
and anchored into concrete. Provide sleeves of
galvanized, standard weight, steel pipe, not less than 6"
long, and having an inside diameter not less than 1/2"
greater than outside diameter of posts. A square
galvanized base plate shall be secured to bottom of
sleeve and of width and length not less than 1" greater
than outside diameter of sleeve. After posts have been
inserted into sleeves, fill annular space between post
and sleeve solid with molten lead or a quick-setting
hydraulic cement. Cover anchorage joint with a round
steel flange welded to post.
(2) Anchor posts to steel with steel oval flanges, angle type
on floor type as required by conditions, welded to posts
and bolted to steel supporting members.
(3) Anchor rail ends into steel with steel oval or round
flanges welded to rail ends and bolted to structural steel
members.
(d) Secure handrails to walls by means of wall brackets, and
wall return fitting at handrail ends. Provide brackets with not
less than 1 1/2 clear space between finish wall surface and
pipe handrail, and with wall plate portion of bracket drilled to
receive one 3/8" bolt. Locate brackets not more than 60"
o.c. Provide flush type wall return fittings with same
projection as that specified for wall brackets. Secure wall
brackets and wall return fittings to building construction as
follows:
(1) For concrete and solid masonry anchorage use bolt
anchor expansion shields and lag bolts.
(2) For hollow masonry and stud partition anchorage, use
toggle bolts having square heads.
(e) All steel pipe handrail shall be G90 galvanized in accordance
with ASTM A525 when installed on exterior areas and areas
with high moisture content atmospheres.
Rev. 3/09 SECTION 12

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(2) STEEL
Pipe railings shall be ASTM A53 of sizes shown on Contract
Drawings and shall be made of standard weight 1-1/2"
galvanized schedule 40 steel pipe, 2 rails, 42" height with
1/8" x 4" toe plates and with standards not over 5' on
centers. Fittings shall be railing type or pipe may have
welded joints. All welds shall be ground and polished
smooth after fabrication. Wrought iron pipe sleeves of
proper size and arrangement shall be built in and the
standard be provided with suitable male connection to slide
and lock therein and stand rigid. Provide suitable wall
stringer and floor flanges and/or floor sleeves. All welded
railings shall be hot dip galvanized after fabrication. Railing
expansion joints shall coincide with building or structure
expansion joints.
(3) ALUMINUM
The work includes furnishing and installing aluminum pipe
railings at the locations shown on the Contract Drawings.
The railings shall be constructed using 1-1/2" I.P.S.
Schedule 40 aluminum pipe weighing 0.94 pounds per foot
with standards at 5' centers maximum. The railings shall be
2-rail type, 42" high, and shall be constructed using 1/8" x 4"
aluminum toe plates. Floor plates, fascia plates, fascia
mounts and escutcheon plates shall be used as indicated on
the Contract Drawings or as required. Welds shall be
completely dressed and blended to pipe. Railing expansion
joints shall coincide with building or structure expansion
joints.
(4) ORNAMENTAL RAILINGS
(a) Ornamental railings shall be fabricated from mild steel
(or of other metals as designated) bars and shapes to
the size and details indicated on the Contract Drawings.
Uprights located in concrete shall be set in sleeves
approximately 6 inches long and caulked tight in molten
lead or hot sulphur. Uprights in stone shall be set in
drilled holes and caulked tight with molten lead or hot
sulphur. Rail ends shall be secured into drilled holes in
masonry and stone and caulked with lead wool.
(b) The top of the rail for brass, aluminum or wood handrails
shall be drilled and counter-sunk every ten (10) inches
for fastening handrail with screws from the underside.
Unless otherwise detailed or noted on the Contract
Drawings wall brackets shall be used for handrails and
shall be of stone design malleable cast iron spaced ten
(10) inches from the ends, and not over five (5) feet
apart, and shall be furnished with toggle or expansion
bolts for fastening to wall.
Rev. 3/09 SECTION 12

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Q) METAL LADDERS
(1) Vertical metal ladders shall be fabricated of mild steel, aluminum or
of genuine wrought iron to the size and details as indicated on the
Contract Drawings. Ladders and brackets to be exposed to
weather or moisture shall be fabricated of genuine wrought iron.
(2) Ship ladders (sloping ladders) shall be of the open type, fabricated
of structural steel channels or steel plate stringers, having pipe
handrails and steel grading treads. Treads shall have a toe piece
at the back one-third of the height of the riser. Stairs shall be
fabricated to be anchored to the floor and top with approved
fastenings.
(k) METAL LADDERS WITH SAFETY CAGE
Metal ladders with safety cages shall be galvanized finish with not less
than 1.8 oz. of zinc per square foot, according to ASTM A123. All new
and existingladders shall be fitted with safetycages to comply with
9 pY
OSHA Standards. Safety cages shall envelope the ladder width and
2'-7" deep. All sections shall be welded. Parapet rails or rail
extensions shall be as shown on the Contract Drawings. Rails shall be
same section in size and strength as ladder rails. The top horizontal
bar of the safety cage shall extend around ladder and terminate at top
of deck.
(I) SPIRAL METAL STAIRS
Spiral stairs shall be of the diameter shown on the Contract Drawings
and designed for a circular stairwell and cantilevered tread
construction. Stairs shall be provided with mild steel railing, balusters
and newel. One baluster shall be provided to each step and with the
railings extending around the stairwell. The center pipe shall be 3
inches in diameter with cast iron terminals and base and non-slip cast
iron cantilevered treads.
(m) METAL STAIRS
(1) Metal stairs shall be fabricated of all aluminum materials or of steel
as indicated on the Contract Drawings. Railing and accessories
shall be constructed of the materials indicated on the Contract
Drawings. The weights of all aluminum members shall be
sufficient to sustain loads without objectionable deflection.
(2) All stairs and platforms shall be designed to sustain 100 pounds
per square foot for a vertical projected load unless otherwise noted
in the Project Specifications or detailed on the Contract Drawings.
Rev. 3/09 SECTION 12

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(3) Stair stringers shall be fabricated either of channels, flat plates or
formed plates, bent or rolled to necessary size and shape. The
tread and riser brackets shall be 1-1/4 x 1-1/4 x 1/8 inch angle,
welded or riveted to the stringers. The headers constructed of
channels shall be bolted or welded to the stringers. The sub-
treads and risers shall be formed of not less than a No. 14 gauge
steel; intermediate platforms shall be formed of No. 12 minimum
gauge steel and reinforced with angle or tee stiffeners. The fascia
plate covers shall be fabricated of 14 minimum gauge steel or as
indicated on the Contract Drawings.
(4) Unless otherwise indicated on the Contract Drawings the sub-
treads and platforms for stairs without grating treads shall be
formed with a bent nosing and the bottom of the riser shall have a
bent key to receive the poured in place cement or terrazzo treads
and safety nosings. An allowance for a two (2) inch fill on treads
and three (3) inch fill on intermediate platforms shall be made.
(5) Newels and drops shall be formed to the design indicated on the
Contract Drawings, fabricated of 14 gauge tubing with permanently
secured cast iron caps and drops. Balusters shall be formed of the
size and shape indicated on the Contract Drawings, fabricated of
handrails thereto. Brackets for the wall handrails shall be provided
to permit installation with brackets located one (1) foot from each
end and each corner and five (5) feet on centers.
(6) All anchors, bolts, angles, hangers, supports and other
accessories needed for the complete assembly and installation
shall be supplied. Stair members shall be either riveted or welded
except that bolting may be used for field assembly where riveting
or welding cannot be used. All bolting shall have concealed or
flush heads.
(7) Provide brackets and bearing surfaces as detailed and as required
to anchor and contain the stairs on the supporting structure.
(8) Handrails shall be as specified with connections welded and joints
ground smooth. Provide with terminal caps and wall flanges where
required. Mechanically jointed railing systems maybe used if
approved by the Engineers. Install railings using sleeves, flanges,
etc., as detailed and anchor with lead.
(9) Install wall flanges, post flanges, wall brackets, terminal caps, etc.,
as required for complete stair installation.
(10) Furnish inserts and anchoring devices which must be set in
concrete or built into masonry for the installation of the stair
systems work. Provide setting drawings, templates, instructions
and directions for installation of anchorage devices. Coordinate
delivery with other work to avoid delay.
Rev. 3/09 SECTION 12

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(n) STAIR FRAMING
(1) Fabricate stringers of structural channels, or plates, or a
combination thereof, as shown. Provide closures for exposed
ends of strings.
(2) Construct platforms of structural channel headers and
miscellaneous framing members, as shown. Bolt headers to
stringers and newels. Bolt framing members to strings and
headers.
(o) GRATING
(1) All gratings shall be fabricated of aluminum or as indicated on the
Contract Drawings and designed for a 100 pound per square foot
minimum live loading, where specific details are not supplied. All
intermediate structural members required shall conform to the
loading, unless noted otherwise.
All intermediate structural members required shall conform to the
loading requirements and must be provided by the Contractor.
(2) Frames shall be constructed of aluminum angles, channels, bars
or other aluminum members shown on the Contract Drawings.
Gratings shall be high-strength, heavy duty, lightweight type and
be designed with a minimum 1-3/4" I-bar depth with loads not
exceeding those permitted by Federal Specification RRG661C.
Tread surface shall be extruded and continuous with the top of the
I-bar section. The side of the gratings shall be an I-bar. All four
outside edges of each separate section of grating shall be banded
prior to installation. Any edges banded in the field shall be to the
satisfaction of the Engineers. All gratings shall be aluminum 6063
Standard and as manufactured by Borden Grating, IKG Industries,
Gary Grating, or equal.
(3) Grating shall be detailed to place top flush with the surrounding
walking surface, areaway gratings shall be detailed to place top
flush with the top of the concrete surface. Grating for floors and
walkways shall be provided with an angle iron frame for anchoring
to the concrete with a welded bar anchorage placed at 3 foot
centers. At least 1-3/4" of bearing surface shall be provided on the
angle iron frame.
(4) Gratings in public sidewalks shall have the inner frame hinged to
the outer frame with genuine wrought iron butts having brass pins
and a lock requiring special tools. The outer frame shall be
detailed for bolting to the concrete.
(5) Steel grating shall be galvanized after fabrication.
Rev. 3/09 SECTION 12

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(p) HANDRAIL CHAIN
When indicated on the Contract Drawings, two-line handrail chain shall
be supplied to substitute for pipe handrail. Chain shall be anchored to
a post at one end and connected to post ring at the other end with a
snap hook. Chain and all accessories shall be fabricated of galvanized
steel unless otherwise noted on the Contract Drawings with welded link
construction with link metal 3/16 inch in diameter.
(q) ALUMINUM MANHOLE FRAMES AND COVERS
Furnish and install all aluminum manhole frames and covers shown on
the Contract Drawings. Frames shall be constructed of aluminum
angles, channels, bars or other aluminum members shown in details.
All members shall be welded. Covers shall be checkered aluminum
plates or bar gratings as indicated on the Contract Drawings and shall
be fitted with hinges and flush handles for opening. Frames and
covers shall be designed to support a uniform load of not less than 200
pounds per square foot, without excessive deflection. Covers over
flumes or reservoirs shall be fitted with a minimum 6" screened vent.
Aluminum manhole frames and covers shall be as manufactured by
Bilco Co., Waco, Haladay or equal.
(r) STEEL MANHOLE FRAMES AND COVERS
Furnish and install all steel manhole frames and covers shown on the
Contract Drawings. Frames shall be constructed of steel angles,
channels, bars or other steel members shown in details. All members
shall be welded. Covers shall be checkered steel plates, or bar
gratings, as indicated on the Contract Drawings and shall be fitted with
hinges and flush handles for opening. Frames and covers shall be
designed to support a uniform load of not less than 200 pounds per
square foot, without excessive deflection. Covers over flumes or
reservoir shall be fitted with a minimum 6" screened vent. After
fabrication, steel frames and covers shall be sand blasted smooth,
cleaned and be hot dip galvanized. Steel manhole frames and covers
shall be as manufactured by Bilco Co., Waco Co., Haladay or equal.
(s) ROOF CURBS
Roof curbs shall be provided for all roof penetrations requiring curbs
including architectural, process, mechanical and electrical work(except
skylights) as required. Curbs shall be of 18 gauge galvanized steel
construction with continuous welded corner seams, factory installed
wood nailers and 3 lb. density rigid fiberglass board insulation
minimum of 9" in height and shall be as manufactured by Pate Mfg.
Company, Broadview, Illinois, Thybar Corp., Addison, Dayton or
approved equal. Wood nailer shall be chemically treated to resist rot
and insect infestation.
The type of curb required shall give the appearance of, or include a
well liner, with deck closure strips furnished.
It shall be the responsibility of the curb manufacturer to coordinate the
curb sizes with the equipment being placed over the roof openings.
Rev. 3/09 SECTION 12

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(t) JIB CRANE
(1) REQUIREMENTS
The Contractor shall be responsible for furnishing details which are
required, but not necessarily shown on the he Contract Drawings, for
the adequate and proper installation of the jib crane as required by the
Engineers. Cranes and hoists shall be as manufactured by Gorbel,
Bushman Equipment, Inc., Spanco, Inc., Abel Howe, or equal.
(2) HOIST
(a) All apparatus covered by this Specification shall be
constructed in a thorough and workmanlike manner. Due
regard shall be given in design for safety of operation and
durability of parts. The design of all units shall embody the
general characteristics as specified herein.
(b) All parts requiring periodic adjustment or replacement shall be
readily accessible and the maintenance shall require only
standard tools.
(3) FACTOR OF SAFETY
All load carrying parts shall be constructed so that the static stress
under full load conditions will not exceed 20% of the ultimate strength
of the material used. The gears shall be designed for strength and
wear in accordance with AGMA practice.
(4) HOIST FRAME
The hoist frame shall be made of steel members and all load
supporting hoist parts subjected to tension shall be of steel. The joist
frame shall be a ductile shock resistant unit and shall give adequate
protection to the cable.
(5) HOISTING CABLE
The wire rope shall be constructed of stainless steel. The cable shall
be equipped with swaged-on cable fittings for attachment to the hoist.
The attachment of the cable to the hoist frame shall be accessible and
shall permit convenient replacement of the cable. The wire rope shall
be adequately and internally lubricated. The cable length shall be not
less than 30'.
(6) TROLLY& HOIST
(a) REQUIREMENTS
The Contractor shall furnish and install manual trolly and hoist
as shown on the Contract Drawings. The Contractor shall be
responsible for furnishing details which are required, but not
necessarily shown on the Contract Drawings, for the adequate
and proper installation of the hoist as required by the
Engineers. Trolly and hoist shall be as manufactured by
Rev. 3/09 SECTION 12

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Wright Hoist Division of American Chain and Cable, Inc.,
Philadelphia Hoist Division Company, ACI Hoist and Crane or
an equal.
(b) HOIST
(1) All apparatus covered by this Specifications shall be
constructed in a thorough and workmanlike manner.
Due regard shall be given in design for safety of
operation and durability of parts. The design of all
units shall embody the general characteristics as
specified herein.
(2) All parts requiring periodic adjustment or replacement
shall be readily accessible and the maintenance shall
require only standard tools.
(c) FACTOR OF SAFETY
All load carrying parts shall be constructed so that the static
stress under full load conditions will not exceed 20% of the
ultimate strength of the material used. The gears shall be
designed for strength and wear in accordance with AGMA
practice.
(u) WHEEL GUARDS
Unless otherwise indicated the wheel guards shall be cast iron.
(v) PIPE TRENCH COVERS AND FRAMES
Pipe trench covers and frames shall consist of 3" x 2" x 1/4" steel angle
frames with 1" x 1/4" steel anchors spaced approximately 18 inches on
center on all sides for embedding in concrete. Continuous stops shall
be welded to the sides of the frame. Covers shall be fabricated of 1/4"
steel plate set loose in sections of not over 4 feet long with stiffener
angles as required. The top of the plate and frame shall finish flush
with the finished floor.
(w) EXPANSION JOINT COVER PLATES
Cover plates for floors, walls and ceilings shall be of cast iron or 14
gauge steel. Plates for floors shall be made of brass and have a
smooth finish on the top surface. Cover plates shall be furnished with
flat-head counter-sunk tap screws and expansion sleeves arranged in
such a manner as to permit expansion or contraction after installation.
(x) TUBULAR METAL FRAMES
Tubular metal frames for doors and windows shall be fabricated as
indicated by these Specifications or on the Contract Drawings and
shall be reinforced for all hardware.
Rev. 3/09 SECTION 12

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(y) CLEAN-OUT DOORS
Clean-out doors shall be fabricated of cast iron of the size indicated on
the Contract Drawings, with a flange type frame. Each frame shall
have at least four masonry anchors and each door shall have two
heavy pin hinges, a latch and hook.
(z) CORNER GUARDS
(1) Corner guards indicated on door jambs and other external corners
in concrete and masonry shall be constructed of bent steel plate,
1/4 inch thick, or steel angles 6 x 6 x 1/4 inches thick and
extended to a height of six feet on the jambs. The corner guards
shall be secured to the masonry with anchors welded to the back
and spaced 2 feet apart.
(aa) ALUMINUM COPINGS
Aluminum copings where indicated on the Contract Drawings shall be
similar to standard Alcoa extruded shapes of the size required. The
copings shall be formed true to radii, with all required anchors, miters,
caps and expansion devices.
(ab) ALUMINUM SILLS
Aluminum exterior sills for other than window openings where indicated
on the Contract Drawings shall be Standard Reynolds sills with
provisions for expansion.
(ac) ORNAMENTAL GRILLS
Ornamental grills shall be of a pattern to be selected by the
Engineer/Owner. Unless otherwise indicated these grills shall be
fabricated of aluminum and shall be given an anodized finish.
(ad) ORNAMENTAL METAL LETTERS AND SIGNS
Ornamental metal and porcelain on steel signs and letters shall be
constructed in accordance with the best practices of the trade.
Concealed stainless steel fastenings shall be furnished to attach signs
and letters to masonry. Ornamental metals shall have a No. 4 finish,
aluminum work shall be anodized.
(ae) METAL WINDOW STOOLS
Metal window stools where indicated on the Contract Drawings shall
be Milcar metal stools of the style shown.
(af) PROTECTIVE FINISHES FOR EXPOSED ALUMINUM PIPE
(1) All type 204-R1 pipe shall receive a satin finish as specified
herein.
Rev. 3/09 SECTION 12

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(2) All pipe shall be given a brushed textured finish in accordance
with the Aluminum Association Designation ASTM-35. Welds
shall be completely dressed and blended to pipe.
(3) All aluminum shall be then anodized in accordance with the
Aluminum Association Designation AA-C22-A31 (minimum
coating thickness of 0.4 mil).
(ag) LOOSE BEARING PLATES
Provide loose bearing plates for steel items bearing on masonry or
concrete construction, made flat, free from warps or twists, and of
required thickness and bearing area. Drill plates to receive anchor
bolts and for grouting as required. Galvanize after fabrication.
(ah) LOOSE STEEL LINTELS
(1) Provide loose structural steel shape lintels for openings and
recesses in masonry walls and partitions as shown. Weld
adjoining members together to form a single unit. Provide not
less than 8" bearing at each side of openings, unless otherwise
shown.
(2) Install steel lintels of angle or other shapes, light steel framing not
included in "Structural Steel" Section, but required to support
openings 18" wide or wider in brick, concrete block, other
masonry walls, partitions, radiators, ventilating ducts, registers,
access doors to pipes and valves, indicated or required by
mechanical trades.
(3) Lintels: Minimum 16" longer than opening width, of sizes,
number, setting arrangement, as required to provide proper
support.
(4) Provide lintels, frames, where required at duct openings in walls.
Examine drawings for Heating and Ventilating for extent of
framing required.
(ai) MISCELLANEOUS FRAMING AND SUPPORTS
(1) Provide miscellaneous steel framing and supports which are not a
part of structural steel framework, as required to complete work.
(2) Fabricate miscellaneous units to sizes, shapes, and profiles
shown or, if not shown, of required dimensions to receive
adjacent other work to be retained by framing. Except as
otherwise shown, fabricate from structural steel shapes and
plates and steel bars, of welded construction using mitered joints
for field connection. Cut, drill and tap units to receive hardware
and similar items.
(3) Equip units with integrally welded anchor straps for casting into
poured concrete or building into masonry wherever required.
Furnish inserts if units must be installed after concrete is placed.
Rev. 3/09 SECTION 12

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Except as otherwise shown, space anchors 24" o.c. and provide
minimum anchor units of 1-1/4" x 1/4" x 8" steel straps.
(aj) MISCELLANEOUS STEEL TRIM
Provide shapes and sizes as required for profiles shown. Except as
otherwise noted, fabricate units from structural steel shapes and plates
and steel bars, with continuously welded joints and smooth exposed
edges. Use concealed field splices wherever possible. Provide
cutouts, fittings and anchorages as required for coordination of
assembly and installation and other work.
(ak) INSPECTION
Installer must examine the areas and conditions under which
miscellaneous metal items are to be installed. Notify the Contractor in
writing of conditions detrimental to the proper and timely completion of
the work. Do not proceed with the work until unsatisfactory conditions
have been corrected in a manner acceptable to the Installer.
(al) PREPARATION
Furnish setting drawings, diagrams, templates, instructions, and
directions for installation of anchorages, such as concrete inserts,
anchor bolts and miscellaneous items having integral anchors, which
are to be embedded in concrete or masonry construction. Coordinate
delivery of such items to project site.
12.02.4 SHOP COATINGS
(a) Ferrous Metals -- All ferrous metal work except stainless steel and that
specified to be galvanized shall be properly cleaned and shop primed in
accordance with Section 14.0, Painting.
(b) Galvanizing -- Surfaces where indicated in the Project or General
Specifications or on the Contract Drawings shall be hot-dipped galvanized
after fabrication.
(c) Dissimilar Metals -- At those sections where dissimilar metals come into
contact, an alkali resistant bituminous paint shall be applied to the more
active metal. In addition, where steel work contacts aluminum, two (2)
coats of aluminum or bituminous paint shall be applied over the shop
coat.
(d) Anodizing -- Anodized treatment shall conform to the specifications of the
Aluminum Company of America or the Reynolds Metal Company in a
natural color unless otherwise indicated on the Contract Drawings.
(1) Anodized treatment shall conform to the specifications of the
Aluminum Company of America as follows:
Exterior Ornamental Work Alumilite 204
Exterior Handrails Alumilite 215
Interior Ornamental Work Alumilite 202
Interior Handrails Alumilite 215
Rev. 3/09 SECTION 12

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(2) All base metal shall have caustic etch R-1 finish.
(e) Stainless Steel
(1) After fabrication and finishing, stainless steel shall be cleaned to
remove all oil, grease, finger marks or other defacements, and
then passivated in a 20% nitric acid solution. Handling, cleaning
and finishing shall be performed in such a manner that any
defacements will be removed permanently.
(2) During transportation and erection, until the adjacent work of the
other trades is completed, stainless steel work shall be protected
with a strippable plastic coating to prevent scratching, splashing of
mortar or paint, and other defacements.
(f) Copper and bronze -- Assembled copper and bronze work shall be
properly cleaned and given a shop coat of high quality clear finishing
lacquer.
12.03 CONSTRUCTION METHODS
12.03.1 GENERAL
(a) Before starting work the Contractor shall examine adjoining work on which
work is in any way dependent for perfect workmanship and fit. All
corrective work shall be performed to the adjoining work as may be
necessary to produce work perfect in all respects.
(b) Work shall be erected square, plumb, straight and true, accurately fitted,
and with tight joints and intersections. Riveted parts, where so indicated,
shall be installed with countersunk heads or blind rivets. Work shall be
adequately reinforced and anchored in place.
(c) Exposed work shall be finished smooth with even, close joints and neat
connections.
12.03.2 INSTALLATION OF MATERIALS
(a) The Contractor shall store, handle and install materials with every
precaution to avoid damage and shall maintain protection until final
acceptance of the building.
(b) All components shall be installed with posts plumb and rails true-to-line, at
designated location(s) and in accordance with approved shop drawings.
Anchorage shall be rigid, with all mechanical fasteners drawn up tight,
and all sleeve-set posts installed with nonshrink grout.
(c) As late in the construction period as practical, the Contractor shall
thoroughly clean all components using mild soap and water or by other
methods recommended by the material manufacturer.
12.03.3 SETTING LOOSE BEARING PLATES
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(a) Clean concrete and masonry bearing surfaces of any bond-reducing
materials, and roughen to improve bond to surfaces. Clean the bottom
surface of bearing plates.
(b) Set loose bearing plates on wedges, or other adjustable devices. After
the joists have been positioned and plumbed, tighten the anchor bolts.
Do not remove wedges or shims, but if protruding, cut-off flush with the
edge of the bearing plate before packing with mortar.
(c) Pack bedding mortar solidly between bearing surfaces and plates to
ensure than no voids remain.
12.03.4 PROTECTION OF WORK
The Contractor shall protect all completed work and construction materials at
all times during construction and until acceptance by the Owner of the
completed project. Prior to final acceptance of the Project, all protection to
metal work shall be removed and the metal work replaced, repaired and
refinished if necessary and delivered to the Owner in perfect condition.
12.04 COMPENSATION
12.04.1 GENERAL
Miscellaneous Metalwork furnished and installed under Section 12.0 will not be
measured for separate payment. Cost of such work shall be merged in the
prices bid on other contract items.
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GENERAL SPECIFICATIONS
15.0 ELECTRICAL MOTORS
15.01 GENERAL
15.01.1 SCOPE OF WORK
(a) All electric motors furnished for installation on this Contract shall
comply with the following General Specifications, the Project
Specifications and the Contract Drawings.
(b) This General Specification designated as Section 15.0 covers the
specification of electric motors generally utilized on power driven
equipment. The Project Specifications and the Contract Drawings
include specifications for any special motor types required and
indicates the motor characteristics required on each application on this
Contract. The inclusion of items of material or work within this
Specification does not necessarily constitute their use on this Project.
15.01.2 SHOP DRAWINGS
Equipment Shop Drawings submitted for approval shall include the following
motor data:
Manufacturer
Nameplate Rated Horsepower, Voltage and RPM
NEMA Type
Code Letter
Guaranteed Lock Rotor Current
Guaranteed Full Load Current
Guaranteed Full Load Efficiency
Guaranteed Full Load Power Factor
Outline Drawings and Dimensions
15.01.3 STANDARDS
Where materials and methods are indicated in the following Specifications
as being in conformance with a standard specification it shall refer in all
cases to the latest edition of the specification and shall include all interim
revisions. Listing of a standard specification without further reference
indicates that the particular material or method shall conform with such listed
specification.
15.02 ELECTRIC MOTORS
15.02.1 GENERAL
(a) Motors shall conform to the latest applicable NEMA, AIEE, and ASA
standards. The motor ratings and types shall be as hereinafter
specified, except as modified by the Project Specifications. All motors
shall receive routine tests in accordance with AIEE test procedures.
Rev. 09/02 SECTION 15

Page 2
(b) Output torque and speed characteristics of each motor shall be suitable
to operate the driven equipment under the full range of equipment
operating load conditions without exceeding the nameplate current
rating, and/or temperature rise.
(c) Special equipment requiring a motor drive with unusual characteristics
shall be equipped with a definite purpose motor to meet the necessary
requirements.
(d) Motor bearings shall be of the anti-friction type. Thrust bearings in
vertical motors shall be adequate for the loading encountered.
(e) Explosion-proof type motors shall be furnished for hazardous areas as
defined in the National Electric Code. They shall be totally enclosed
and bear the Underwriters Laboratories Label indicating compliance
with the requirement for the specific application.
(f) Unless otherwise specified, large motors 200 hp and above shall be
furnished in WP-2 enclosures with epoxy resin encapsulated windings
and space heaters as herein specified.
(g) Motors located out of doors, in unheated structures, in basements or as
otherwise specified or indicated shall be furnished with space heaters
with leads brought out to a separate weatherproof(NEMA 3R) terminal
box. Terminal boxes shall be NEMA 7 in hazardous areas. All motors
shown or specified wired for space heaters shall be furnished with
space heaters rated at the voltage of supply for the motor. Motors
requiring space heaters shall be disgned for the space heaters
furnished without causing damage or warpage to the motor frame, end
bell, etc. All cost of providing the same shall be included in the base
bid.
(h) Motors shall be supplied to operate on the voltage source as specified
or indicated. In the event the voltage source is not indicated or
specified or if a discrepancy exists between the Contract Drawings and
Specifications concerning the electrical requirements, the Contractor
shall contact the Engineers to determine the electrical requirements
prior to submitting a bid. In the event the Contrator for this division
does no fully understand the electrical requirements and neglects to
contact the Engineers to determine the electrical requirements,
submission of a bid will signify that the Contractor agrees to provide
whatever is required for the project use in accordance with the
Engineer's requirements.
15.02.2 RATINGS
(a) Motor ratings shall be based on continuous operation in an ambient
temperature of 40 degrees C. The maximum temperature rise for open
and drip-proof type motors shall not exceed 40 degrees C, and for
totally enclosed type motors shall not exceed 55 degrees C.
Rev. 09/02 SECTION 15

Page 3
(b) It should be noted that the motor sizes indicated on the Contract
Drawings or as otherwise specified herein, are approximate motor sizes
required for the specific equipment which is specified herein or
indicated. Specific motor sizes shall be determined from the actual
equipment approved, purchased and installed. Overload protection,
starters, disconnect switches, etc., shall be furnished and installed for
the actual motor sizes as furnished.
15.02.3 TYPES
(a) Motors of 1/2 hp and larger shall be squirrel cage induction type
designed for 3 phase, 60 cycle, 240/480 volt operation, unless otherwise
noted. Motors smaller than 1/2 hp shall be of the capacitor type
designed for single phase, 60 cycle, 115 volt operation. Motors
indicated on the Contract Drawings and/or specified in the Project
Specification as 208 Volt shall be specially wound for the voltage
indicated and/or specified.
(b) Torque and locked rotor current characteristics for three phase motors
shall be NEMA Design "B". The locked rotor KVA/HP input at full
voltage for 10 hp motors and larger shall not exceed that permitted for
Code Letter "F", with special definite characteristics. Unless otherwise
noted, all three phase motors shall be designed for a 1.15 service factor.
(c) All motors located inside of heated weatherproof structures shall be of
the open "drip-proof"type, unless otherwise specified or indicated.
(d) Motors located out of doors and in hazardous locations and as otherwise
specified or indicated shall be of the totally enclosed fan cooled type
(TEFC) with space heaters unless indicated otherwise.
(e) Explosion-proof type motors shall be furnished for hazardous areas as
defined in the National Electric Code. They shall be totally enclosed
and bear the Underwriters Laboratories Label indicating compliance with
the requirement for the specific application.
(f) Unless otherwise specified, large motors 200 hp and above shall be
furnished in WP-2 enclosures with epoxy resign encapsulated windings
and space heaters as herein specified.
(g) Motors located out of doors, in unheated structures, in basements or as
otherwise specified or indicated shall be furnished with space heaters
with leads brought out to a separate weatherproof (NEMA 3R) terminal
box. Terminal boxes shall be NEMA 7 in hazardous areas. All motors
shown or specified wired for space heaters shall be furnished with space
heaters rated at the voltage of supply for the motor. Motors requiring
space heaters shall be designed for the space heaters furnished without
causing damage or warpage to the motor frame, end bell, etc. All cost of
providing the same shall be included in the base bid.
(h) Motors shall be supplied to operate on the voltage source as specified
or indicated. In the event the voltage source is not indicated or specified
or if a discrepancy exists between the Contract Drawings and
Rev. 09/02 SECTION 15

Page 4
Specifications concerning the electrical requirements, the Contractor
shall contact the Engineers to determine the electrical requirements
prior to submitting a bid. In the event the Contractor for this Division
does not fully understand the electrical requirements and neglects to
contact the Engineers to determine the electrical requirements,
submission of a bid will signify that the Contractor agrees to provide
whatever is required for the project use in accordance with the
Engineers' requirements.
Rev. 09/02 SECTION 15

Page 1
GENERAL SPECIFICATIONS
17.0 RESTORATION AND CLEAN-UP
17.01 GENERAL
17.01.1 SCOPE OF WORK
(a) All labor, materials, equipment, tools and services to fulfill the
requirements of this General Specification, the Project Specifications and
the Contract Drawings shall be furnished by the Contractor as part of his
Base Bid.
(b) All concrete sidewalk, asphalt and concrete driveways, asphalt and
concrete pavements, ditches, curb and gutter, fences, poles, mail boxes,
landscaped areas, building components, equipment, and all other
disturbed areas shall be replaced or restored to equal or better than their
condition prior to work beginning. Upon completion of the work in this
Contract, all surplus material, earth, rubbish, etc., shall be removed from
the site of the work. That portion of the surface of each yard or street
disturbed by construction under this Contract shall be left in as good
condition as it was before the commencement of the work, and it shall be
promptly and regularly maintained in such condition during a period of
one year after the acceptance of the work. This work of maintenance
shall apply only to items of materials and workmanship improperly
installed under this Contract, and maintenance measures made
necessary by the ordinary wear and tear shall not be at the expense of
the Contractor. However, any repairs required because of unsatisfactory
trench backfilling shall be at the expense of the Contractor. The inclusion
of items of material or work within this Specification does not necessarily
constitute their use on this Project.
17.02 PAVEMENTS, CURBS AND CURBS AND GUTTERS
(a) In all streets or parts of streets or other areas that are paved or macadamized, all
backfilling shall be well compacted by jetting. After the trench or excavation has
been backfilled and jetted to the required height, the subgrade for the new paving,
curb and/or curb and gutter shall be replaced.
(b) All pavements, curbs and curbs and gutters shall be replaced to the section and of
the same materials as that removed in accordance with the Owner's established
standards or in their absence to the Standards of the State Highway Department.
17.03 DRIVEWAYS AND SIDEWALKS
(a) The backfill and subgrade for all driveway and sidewalk replacement shall be
jetted and compacted in the same manner as that specified for pavements. All
edges broken from driveways and sidewalks shall be sawed or cut off at right
angles to the driveway or sidewalk and after approval of Engineer replaced.
Rev. 09/00 SECTION 17

Page 2
(b) All driveways and sidewalks shall be replaced to the section and of the same
materials as that removed in accordance with the Owner's established standards
for similar work.
17.04 MISCELLANEOUS
All ditches disturbed during this construction shall be regraded to their original line and
grade unless otherwise noted. All regrading of ditch lines shall be followed by reseeding
and adequate protection from erosion until seed can be established. Any part of any
lawn disturbed whether part of road right-of-way or not shall be regraded to its original
grade, shall have a minimum of four (4) inches of topsoil placed and shall be reseeded
with seed similar to the original sod. All damaged trees and shrubs in yards shall be
replaced with similar items unless otherwise noted. This replacement of damaged trees
and shrubs does not apply to those planted within established road rights-of-way unless
specifically stated otherwise in the Project Specification.
Rev. 09/00 SECTION 17

SECTION 11000 ASPIRAT
ING AERATORS/MIXERS
1. GENERAL
1.1 WORK described by this section consists of furnishing and installing all
materials, equipment, and accessories for a complete installation of two (2)
- 20HP floating sub-surface aspirating aerators-mixers. Each aerator-
mixer shall consist of a motor, direct drive propeller driven at a constant
speed and an integral flotation unit.
1.2 Submittals for equipment shall be submitted by CONTRACTOR to
ENGINEER as provided for in these Contract Documents, including the
information listed under the section for Installation, Operating &
Maintenance Manuals.
1.3 Catalog Data Sheets: Submit manufacturer's detailed manual that shall
include specific instructions and catalog data sheets that represent the
equipment to be furnished for the Project, and all documents shall clearly
indicate all options to be provided. All non-applicable information must be
removed from the data sheets.
1.4 Shop Drawings: Submit manufacturer's standard and Project Specific
drawings for the equipment to be furnished. All drawings shall clearly
indicate all equipment components, and accurate locating dimensions, for
the total system.
2. AERATOR-MIXER DRIVE MOTORS
2.1 Each motor shall deliver 20 horsepower and shall be wired for 460 volt, 60
cycle, 3 phase service, and operate at 1800 RPM. Motors shall be
capable of reverse operation, via reversing motor starters, provided by the
equipment manufacturer in the local control panels.
2.2 Each motor shall be a totally enclosed, fan cooled, squirrel cage design
mounted in the B 35 position.
2.3 The motor shall meet NEMA premium efficiency requirements, with a
motor ingress rating of IP55 or greater.
2.4 The motor shall in all cases equal or exceed standard IEC or NEMA
specifications. The motor windings shall be nonhygroscopic, and
insulation shall equal or exceed NEMA class "F" or better.
SECTION 11000 ASPIRATING AERATOR-MIXER PAGE 1 OF 5

2.5 A stainless steel nameplate shall be provided with each motor, and shall
be securely fastened thereto. The voltage, speed, phase, insulation class,
amperage, service factor, wiring diagram, motor serial number, and
manufacturer's name and address shall be stamped thereon or otherwise
permanently marked. The motor shall be manufactured by Siemens, or
pre-approved equal.
3. COUPLING AND SHAFT
3.1 The motor shaft shall be connected to an extended hollow shaft using a
tapered compression coupling. Equipment designs using solid shafts that
may impede airflow are not acceptable. Shafts welded directly to the
coupling that cannot be disassembled are not acceptable.
3.2 The rotating power section assembly shall be dynamically balanced to
within 2.0 mils peak-to-peak horizontal displacement, as measured at the
motor bearings. Measurements shall be taken at a frequency equivalent to
the motor RPM.
3.3 Equipment that requires the aerator shaft to be stabilized using a
submerged water-lubricated bearing or submerged grease-lubricated
bearing are not acceptable.
3.4 Each shaft shall be enclosed by a protecting housing manufactured of
polyester fiberglass resins and shall be mounted directly to the drive motor.
4. MOTOR BEARINGS
4.1 Motor bearings shall be sealed single row deep groove ball bearings.
Motor bearings that require regular greasing will not be accepted.
4.2 Motor bearings shall be SKF or FAG.
5. PROPELLER
5.1 The propeller shall be a fouling-resistant three-blade design specifically
engineered to maximize aspiration and mixing. Two-blade designs with a
lower vane frequency shall not be accepted.
5.2 The aerator propeller shall have a diameter of 5.9 inches and a length of
13.8 inches. Propellers where the diameter exceeds the length shall not be
accepted. Marine type propellers shall not be accepted.
SECTION 11000 ASPIRATING AERATOR-MIXER PAGE 2 OF 5

5.3 The aerator propeller shall be welded to the shaft in order to prevent
accidental dislodgement. Tapered, threaded shafts with nut fasteners shall
not be accepted.
5.4 The propeller shall be manufactured out of 304 stainless steel. Aluminum
and plastic propellers shall not be accepted.
6. FLOTATION
6.1 Flotation stability will be mandatory. Under no circumstances, unstable
floatation designs requiring counter balancing, ballast of liquid, solid mass
or submerged major fabricated assemblies to stabilize the operation of the
mixer shall be allowed. Only aerator floats demonstrating stable
operational characteristics, without rocking or oscillating will be acceptable.
6.2 Each floatation assembly shall consist of four (4) rotationally molded low-
density polyethylene pontoons of fiberglass construction connected by a
hot-dipped galvanized steel framework. Structural aluminum framework
shall not be accepted.
6.3 Each floatation assembly shall include two floatation support legs
manufactured out of 304 stainless steel, in order to prevent the propeller
from touching the ground in cases where the aerator is not floating, such
as a dewatered basin condition or dry storage.
6.4 Units without two float support legs shall not be accepted.
7. MOORING
7.1 Cable mooring system shall be provided by the equipment manufacturer.
8. ELECTRICAL SERVICE
8.1 Electrical service cable and appurtenances from the site power supply to
the local control panels, and from the local control panel to the motors,
shall be provided by Owner.
8.2 Two (2) local motor start-stop panels with reversing motor starters, one for
each equipment unit, shall be provided by the equipment manufacturer.
The Owner will be responsible for installation of the panels and wiring to
the panels from site power supply and from the panels to the motors. The
reversing motor starters shall be situated in the local panels. Panels shall
have On-Off-Reverse control switches on the front faces. There shall be
no Auto operation. Panels shall be NEMA 4X stainless steel. Internal
SECTION 11000 ASPIRATING AERATOR-MIXER PAGE 3 OF 5

wiring diagrams for the local panels, including wiring for the reversing
motor starters, shall be provided in the O&M Manuals.
9. INSTALLATION, OPERATING, AND MAINTENANCE MANUALS
9.1 The mixer manufacturer shall provide three (3) hard copies of a detailed
manual that shall include specific instructions for receiving and handling,
weight of all components, assembly, mooring, wiring, installation, repair
and service, storage, troubleshooting, detailed exploded-view drawings of
the unit, and a full parts list.
9.2 In addition, the manual shall contain complete detailed instructions on the
balancing procedure to be used for rebalancing to the propeller after it has
been in service for an extended period of time. These instructions shall
include a general procedural description, a detailed explanation of
preparing the unit for balancing, and the balancing procedure for
propellers.
9.3 These manuals shall be submitted for review, along with other general
submittal information, including detailed drawings, brochures, catalog data-
sheets, and motor data sheets, etc., as part of the approval process.
9.4 Each hard copy manual shall be bound in an appropriately sized three ring
notebook with clear protective cover that shall include a cover sheet
designating the name of the equipment, Instructions, Operation and
Maintenance Manual, and specification number.
9.5 The manufacturer shall provide two (2) CD's containing the Portable Digital
File (PDF) version of the operation and maintenance manual. The CD (s)
must be clean and unused, and shall include an identification label
including the cover sheet information of the hard copy manuals.
9.6 The digital PDF file shall match the hard copy manual and include
bookmarks, marking the first sheet of each document and drawing for
quick reference.
10. EXPERIENCE
10.1 Manufacturers proposing to furnish equipment for this project shall have a
minimum of five installations of same equipment model and design, in the
same service for a period of five years.
10.2 Equipment and/or components failing within this period due to deficiency in
design, workmanship or material shall be replaced at no cost to the owner,
SECTION 11000 ASPIRATING AERATOR-MIXER PAGE 4 OF 5

and said replacement shall be guaranteed for five additional years of
continuous service.
11. MANUFACTURER
The aspirating aerator-mixer specified herein shall be the OxyStar®Aspirating
Aerator-Mixer as manufactured by Aqua-Aerobic Systems, Inc., 6306 North
Alpine Road, Loves Park, Illinois 61111, or pre-approved equal.
12. WARRANTY
Each aspirating aerator-mixer shall be warranted against defects in material and
workmanship under normal conditions and use for a period of one year from the
date the goods are put into service.
13. START-UP AND OPERATOR TRAINING SERVICE
The equipment manufacturer shall provide the services of a trained
manufacturer's representative to check the equipment installation, supervise
initial start-up, and instruct the Owner's personnel in the proper operation and
maintenance of the equipment. A minimum of one (1) trip to the site shall be
provided, consisting of a minimum of three (3) 8-hour work days. The trip shall
be used to supervise installation of the equipment. Additionally, the trip shall be
used to supervise start-up and provide operator training. Training shall take place
while manufacturer's representative is at the jobsite for inspection and start-up,
and the O&M manuals shall be used for training all personnel.
END OF SECTION 11000.
SECTION 11000 ASPIRATING AERATOR-MIXER PAGE 5 OF 5

SECTION 16100
ELECTRICAL
PART 1 -GENERAL
1.01 Description of Work
This Section includes furnishing of all labor, material, and equipment and performance of
all operations necessary for the installation of the complete electrical system ready for
use as specified and as shown on the Drawings.
The plans and specifications are intended to describe, imply and convey the materials
and equipment as well as necessary labor required for a completely functional
installation as shown in the Drawings and as outlined herein. Any omissions from either
the Drawings or these specifications are unintentional, and it shall be the responsibility
of the Contractor to call to the attention of the Engineer any pertinent omissions before
submission of a bid. The Drawings are not intended to show in complete detail every
fitting or item which may be required; however, wherever reasonably implied by the
nature of the work, any such material or equipment shall be installed by this Contractor
as part of his contract work. No extra charge will be allowed unless authorized in writing
by the Engineer.
The Contractor shall examine the site before bidding the project and shall familiarize
himself with all existing conditions.
1.02 Quality Assurance
A. Codes and Standards: All work shall be performed in accordance with, and all materials
and equipment shall conform to the requirements of applicable local codes, ordinances,
and regulations and the following codes and standards.
1. National Electric Code(NEC)
2. National Fire Protection Association Standards (NFiPA)
3. National Electric Safety Code (NESC)
B. In addition, work shall be performed in accordance with local codes, ordinances, and
regulations. All materials shall comply with the following applicable standards:
1. American National Standards Institute (ANSI)
2. National Electrical Manufacturers Association (NEMA)
3. Underwriter's Laboratories (UL)
4. Insulated Cable Engineers Association (ICEA)
5. Institute of Electrical and Electronics Engineers (IEEE)
C. The Electrical Contractor shall obtain all permits and arrange all inspections necessary
for the installation of his work and furnishing the Engineer with certificates of inspection
ELECTRICAL ASPIRATING MIXERS/AERATORS 16100- 1

from all authorities having jurisdiction. A final inspection by the Owner, the Engineer,
and all involved agencies will be conducted upon completion of the work to determine
acceptability of the work.
1.03 Submittals
A. Shop Drawings: Submit six sets of shop drawings on specified equipment and include at
least the following:
1. Sufficient information to indicate complete compliance with specifications. Such
data shall include "cuts," catalog data sheets, drawings, and/or certifications as
necessary.
B. Plainly mark on all submittals deviations from or exceptions to the Contract Documents.
C. All submittals must be in booklet form.
1.04 Job Conditions:
A. The installation shall comprise the following:
Wiring for lighting and power.
Wiring for equipment power.
Connection of equipment.
B. Wiring Method: The basic wiring method shall be Rigid Steel and PVC conduits.
C. Locations and Dimensions: The locations of equipment, devices, outlets, and similar
items, as indicated on the Drawings, are approximate; and exact locations will be
determined during construction. The Contractor shall verify in the field all data and final
locations for placing of all electrical work. He shall make all field measurements
necessary for his work, and shall be responsible for their accuracy. In the case of
interference with other work or of erroneous locations with respect to equipment or
structures, the Contractor shall furnish all labor and materials to complete the work in an
approved manner.
D. Workmanship: Work under this section shall be accomplished by persons skilled in
performance of the required work. All work shall be done in a first class manner in
keeping with conventions of the trade. Work under this section shall be closely
coordinated with work of other trades to avoid conflict and interference.
E. Working Clearances — General: Verifying working clearances around equipment with
electrical services to comply with code requirements. Should there be apparent
violations of working clearance, notify the Engineer before proceeding with installation of
equipment.
PART 2 -MATERIALS AND EQUIPMENT
2.1 General
ELECTRICAL ASPIRATING MIXERS/AERATORS 16100-2

A. All materials, equipment, and devices shall, as a minimum, meet the requirements of UL
where UL Standards are established for those items and the requirements of NFPA-70. All
items shall have the U.L. seal. All items shall be new unless specified or indicated
otherwise.
B. Properly store, adequately protect and carefully handle equipment and materials to prevent
damage before and during installation. Handle, store, and protect equipment and materials
in accordance with the manufacturer's recommendations. Replace damaged or defective
items.
2.2 Raceway Systems
A. Conduit sizes shown or called for are minimum, and shall not be less than %-inch
nominal diameter, except as otherwise noted.
B. Fittings for rigid steel conduit shall be threaded and galvanized malleable iron.
C. Outlet bodies for rigid steel conduit shall be threaded and galvanized malleable iron.
D. Liquid Tight Flexible Metallic Conduit shall be galvanized steel with moisture and oil-
proof PVC jacket, type UA, UL labeled.
E. Fittings for liquid tight metallic conduit shall be threaded and galvanized malleable iron,
or steel, and shall have molded plastic compression ring.
F. PVC conduit shall be Schedule 80 PVC conduit manufactured from ASTM D1784 PVC in
compliance with NEMA TC-2. PVC conduit shall be UL listed. Joints shall be solvent
cement type.
G. Provide PVC elbows, bends, fittings, and adapters as required for a complete
installation. Provide solvent cement as recommended by the conduit manufacturer.
H. PVC conduit shall be used in all installations or as indicated on the Drawings where the
conduit is in direct contact with the soil. A copper ground conductor shall be provided in
the conduit to maintain the ground system continuity. The ground conductor shall be
sized in accordance to NEC Article 250.
2.3 Wire and Cable
A. For 120/240, 240 volt and 480 volt systems, the wire shall be copper, 600 volt, type 75°C
insulation.
B. Single control cable shall be #14 AWG minimum, copper, stranded. Multi-conductor
control cables shall be used as called for on the Drawings, or as recommended by the
equipment manufacturers.
C. All circuits are to be color coded in accordance with NEC, including single phase circuits.
D. Except for control wiring, the minimum size wire shall be No. 12 AWG, unless otherwise
noted on the Drawings.
E. The grounding conductor for all systems shall have green insulation.
ELECTRICAL ASPIRATING MIXERS/AERATORS 16100-3

F. Conductor insulation shall be of the types indicated or as required by the NEC for the
temperatures expected at the locations shown.
G. All wires shall be marked with voltage rating, size, and insulation type.
2.4 Outlet Boxes
A. Provide boxes in the wiring systems wherever required for pulling of wires, making
connections, and mounting of devices or fixtures. Each box shall have the volume required
by the NEC for the number of conductors enclosed in the box. Boxes for mounting lighting
fixtures shall not be less than 4 inches square (or octagonal), unless required by fixture
configuration. Fasten boxes and supports with fasteners suitable for the purpose.
2.5 Wiring Devices
A. Switches: Switches controlling lighting circuits shall be totally enclosed composition,
quiet type flush tumbler switches with ivory bakelite handles. They shall be rated 20
amperes, 125 volts, unless otherwise indicated on the Drawings; and shall be NEMA
Specification grade.
B. Vapor proof and weatherproof switches shall be standard tumbler switches installed in
cast boxes with gasketed covers with operating handle. Switches for pole mounted
fixtures shall be as called for on the Drawings, and key operated.
C. Receptacles: Receptacles shall be totally enclosed with side or rear connections. All
units shall be equipped with ears, and shall have the ratings and types as called for on
the Drawings.
D. Convenience receptacles shall be 20 amperes, ivory or as otherwise called for, back and
side wires, three-wire grounding, with NEMA 5-20 R configuration.
E. All receptacles shall be installed with the ground U blade shown.
F. Weatherproof receptacles for use as convenience outlets shall be duplex 20 amperes
125 volts, NEMA grade receptacle with U-shaped grounding slot in a weatherproof box
with gasketed covers and spring caps.
G. Plates: Wiring device plates shall be 0.04-inch stainless steel, satin finish.
2.6 Circuit Breakers, Starters
A. Fuses: Install fuses in all fused equipment and provide fuses in the amount of 50% used
per type and ampere rating. Fuses shall be turned over to the Owner for spares.
B. Circuit Breakers: Individual circuit breakers shall be safety dead front units. Units shall
be in NEMA 3R encloser. Circuit breakers shall be quick-make, quick-break with trip-
free handles and common trip.
C. Breakers shall be thermal-magnetic with handles indicating "on" and "off' positions in
front. Provisions for locking handles in the "off' position shall be furnished. Units shall
have poles and ampere ratings as called for on the Drawings. All units shall be of the
same manufacture, and all circuit breakers shall be equipped with engraved bakelite
legend plates securely fastened to the outside of the cover stating what the circuit
breaker controls. Circuit breakers shall be Square D, Cutler Hammer, General Electric,
ELECTRICAL ASPIRATING MIXERS/AERATORS 16100-4

or equivalent. Unless otherwise noted on the Drawings, interrupting capacity shall be
22,000 RMS symmetrical amps minimum at 240 volts.
D. Starters shall be combination-circuit breaker type, NEMA 3R enclosure, NEMA size as
indicated with 120 volt coils. The complete unit shall be rated for 480 VAC. The unit
shall be padlock lock-out type when disconnected.
2.7 Power Panelboards
A. Power panelboards shall have the type and ratings shown on the Drawings.
B. All bus bars shall be copper. Use of aluminum will not be allowed.
C. Branch circuit protective devices shall be of the molded-case circuit breaker type
consisting of the number of poles and ampere ratings as shown in the schedules. Circuit
breaker shall be as indicated. Minimum interrupting capacity shall be 22,000 sym. amps
for panelboard branch circuit breakers, unless marked different on plans. All breakers
shall be quick-make and quick-break with trip-free handles and thermal magnetic strip.
Circuit breakers shall be of the bolt-on type. The Contractor shall verify the RMS ratings
will be acceptable by local authorities and utilities.
D. Provide ground bus in each panelboard box. Use bus for all protective ground conductor
connections.
E. In general, power panelboard units shall be NEMA 3R, unless marked different on plans.
2.8 Lighting Fixtures
A. Provide lighting fixtures as shown on the Plans.
B. Completeness: Furnish all fixtures with accessories necessary for complete and proper
installation.
C. Fixtures shall bear the label of the Underwriter's Laboratories.
D. Lamps: Provide all fixtures with new lamps of the type indicated.
2.9 Seal Offs:
A. Sealing fittings shall be Crouse Hinds EZS or EYS with fiber dam and non-hardening
compound or equal by Killark or Appliton.
2.1 Dry Type Transformers
A. Dry type transformers shall be sized as indicated on the drawings. Transformers located
outside shall have weathershields. Transformers shall have a 150 degree C temperature
rise rating. All shall meet or exceed IEEE, NEMA, and ANSI standards.
PART 3 -EXECUTION
3.1 Raceway Systems: •
ELECTRICAL ASPIRATING MIXERS/AERATORS 16100- 5

A. Conduits: Verify conduit sizes with the dimensions of the particular wires and cables to
be installed.
B. Runs shall be parallel and, in general, perpendicular or parallel to walls, floors, or
principal structural elements.
C. To prevent motion in any direction, conduits shall be supported and secured by
galvanized or PVC wall bracket, ceiling trapeze or pipe clamps approved by the
Engineer. Perforated metal strap hangers and wire hangers are not acceptable.
D. Make joints in PVC conduit in compliance with the manufacturer's instructions. Make all
bends by means of an electrical heating unit approved by the conduit manufacturer
where standard elbows and fittings cannot be used.
E. Any moisture in conduit shall be removed before installing wire. Conduit ends shall be
capped or plugged as soon as possible after installation, and shall remain so until just
before the installation of wires. Junction boxes shall be installed in locations approved
by the Engineer.
F. Where conduit or conduits are stubbed up from a concrete slab, a round or rectangular
concrete collar shall be cast around the stubs. The collar shall protrude approximately
two inches above the slab, and shall be approximately two inches thick around the
conduit. The purpose of the collar is to prevent corrosion of metal conduits and
mechanical damage to non-metallic conduits.
G. Securing and Protecting Conduit: Secure in place and protect where necessary to
prevent damage to the work during construction. Plug the ends of all conduit runs with
cork, oakum, or duct tape. Do not secure conduit directly to other piping.
H. Underground conduits shall be buried to a depth of at least 24 inches below finished
grade, except where noted otherwise.
I. Installation and Drawings: Follow the layout shown on the Drawings. This layout is,
however, diagrammatic only; and where changes are necessary due to structural
conditions, interference with other apparatus or other causes, make such changes
without additional cost to the Owner. Install offsets in conduits as required by the
conditions.
3.2 Wire and Cable
A. Lighting and Receptacle Wiring: Run as single phase, three wire circuits. Separate
neutrals must be provided for each circuit. If the one-way circuit distance from the
panelboard to the first such outlet exceeds 50 feet, run No. 10 wire to the first outlet, with
No. 12 thereafter unless otherwise noted.
B. Power Wiring: Install wiring for motors and other miscellaneous equipment in
accordance with the Drawings. In general, power wiring to other than receptacle outlets
includes the actual connection to the motor or equipment. Include all wiring as indicated
on the Drawings or as required on approved wiring diagrams, but do not include the
interconnecting wiring on any factory assembled piece of equipment. Disconnect switch
locations are not inflexible, but they shall be within sight of the motor.
C. Instrumentation Wiring: Install wiring for instrumentation signal circuits in raceways
separate from AC raceways.
ELECTRICAL ASPIRATING MIXERS/AERATORS 16100-6

D. Care in Installing Wire: Care shall be exercised while installing wires in conduits so as
not to injure the conductor insulation. Wire lubricant of a type approved for the particular
cable insulation shall be used.
E. All wires shall be carried full size from source to load without intermediate splices.
F. Wire Pulling: Wire shall not be pulled into conduit until all conduits and mechanical work
is substantially complete.
G. All control and power wiring in cabinets, panelboards, motor control centers, pull boxes,
junction boxes, and cable trenches shall be neatly trained and held with nylon cable ties.
H. Where control or circuit cabling is clamped or fastened in cabinets or other equipment,
non-metallic nylon cable clamps and mounting brackets shall be installed.
I. Wire and cable shall be suitably protected from weather or damage during the storage
and handling, and shall be in first class condition when installed.
3.3 Lighting Fixtures
A. Lighting fixtures shall be installed true and plumb and left clean and free from all stains,
grease, and fingerprints.
3.4 Marking and Directories
A. Marking: Identify each panel, terminal cabinet, and all other control devices suitably by
means of high letters cut in a black laminated phenolic strip to show white letters,
and neatly fasten on enclosure with screws. Adhesives are not acceptable.
B. Conductor identification by insulation color-coding method is not required for three-
phase circuits; however, each ungrounded conductor shall be properly identified by
plastic-coated, self-adhering printed markers, or permanently attached metal foil
markers, or color-coded self-adhering plastic tape.
Directories: Install typewritten circuit markers in all panelboards. Note changes in the location of
conduits, the connection of circuits, and any other data different from the Contract drawings on a set of
prints prior to acceptance of work.
PART 4 - SPECIAL REQUIREMENTS
4.1 The Contractor shall perform the following:
A. Check all motors to see that each motor has the correct rotation. This shall be done at
the time of the motor test as well as upon start-up.
C. All motors shall be checked for current readings under the various load conditions, and
these readings shall be recorded and turned over to the Engineer
PART 5 - FINAL INSPECTION:
Upon completion of work, all areas shall be cleaned and all portions of installations shall be prepared
for inspection by the Engineer, Owner and other Agencies having jurisdiction.
ELECTRICAL ASPIRATING MIXERS/AERATORS 16100- 7

When the entire job is ready for final inspection, deliver to the Engineer one set of Contract
drawings marked to show all significant changes made during construction. This shall include
changes in equipment ratings and alterations in locations of conduit runs.
END OF SECTION 16100
ELECTRICAL ASPIRATING MIXERS/AERATORS 16100-8

Aspirating Mixers Installation
Design Calculations/Recommendation
Date: July 15, 2020
Town of West Jefferson, North Carolina
West Jefferson 0.5 MGD WWTP
Oxidation Ditch Inner Ring
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Recommended Oxidation Ditch Modifications
West Jefferson, NC — 0.5 MGD — Orbal Oxidation Ditch

Designed for CBOD and NH3-N Removal
July 15, 2020
WWTP Design Parameters for 0.50 MGD Design Flow
Oxidation Ditch Activated Sludge Process
1) Aeration Tank Volume = 0.50 million gallons (0.2 mil gal - inner ring)
2) Detention Time = 24 hours (full plant)
3) Sludge Age = 20 days
4) MLVSS = 2,300 mg/1
5) MLSS = 3,000 mg/1
6) F/M Ratio = 0.16 In BOD5 per lb MLVSS
7) Waste sludge = 590 lb/day(TSS)
8) TSS in waste sludge = 10,000 mg/1
9) Waste sludge flow = 0.0071 mgd
10) Return sludge flow = 25% to 150% of raw wastewater flow
11) Effluent soluble CBOD5 = 2 mg/1
12) Site elevation = 2,700 feet above MSL
13) Lb 02 per Lb CBOD = 1.5
14) Lb 02 per LB NH3-N = 4.33
WWTP Design Loading
1) Design Influent Flow 0.5 MGD (full plant)
2) Design Influent Flow—Inner Ring 0.2 MGD
3) Influent BOD5 Concentration 375 mg/1 (1,500 lb/day)
4) Influent TSS Concentration 240 mg/1 (1,000 lb/day)
5) Influent Ammonia-N Conc 20 mg/I
6) Temperatures 30°C Summer(assumed worse case)
10°C Winter
Effluent Requirements
1) CBOD5 5 mg/1
2) TSS 10 mg/1
3) Ammonia-N 1.6 mg/1
4) Total N No Limit

Analysis of Aeration Requirements
Oxygen Required = oxygen for CBOD removal+ oxygen required for NH3-N removal
Oxygen required for CBOD removal= 1.5 x 375 x 0.5 mgd x 8.34
=2,346 lb/day
Oxygen required for NH3-N removal =4.33 x 20mg/1 x 0.50 mgd x 8.34
= 361 lb/day
Total Oxygen Required for entire plant= 2,346 +361=2,707 lb/day= 112.8 lb/hr
Total Oxygen Required for inner ring = 0.2/0.5 x 2,707 lb/day = 1,083 lb/day =45.5 lb/hr
Including 15% Safety Factor
Adjusted Oxygen Required Inner Ring = 52.325 lb/hr
It is proposed to install Aqua-Aerobic Systems OxyStar Aspirating Aerators/Mixers to meet oxygen
demand and mixing requirements.
OxyStar Sizing:
Field Oxygen Transfer Efficiency (FOTE):
FOTE = SOTE x [(Cs x 13)—Cr) x 1.024(T"20) x a
9.09
Where:
SOTE = Standard Oxygen Transfer Efficiency
=2.0 lb 02/Brake Hp-hr
T = 30°C (Assumed worse case)
Cs = 6.82 mg/1 (at 30°C and 2700 ft elevation)
= 0.95 (Typical)
a = 0.85 (per Aqua-Aerobics full scale field tests)
Cr = 0.2 mg/1 02 operating concentration
FOTE = 1.49 lb 02 /Hp-hr
Power Requirement= 52.325 lb/hr
1.49 lb/Hp-hr
Power Requirement= 35.12 Hp
Recommended Mixing Level = 65 Hp/MGD
= 65 Hp/MGD x Inner Ring Volume of 0.2 MG
= 13 Hp
Therefore, the system is 02 limited (35.12 > 13)
Based on this, it is recommended that two (2) 20 Hp Aqua-Aerobics System OxyStar
Aerators be installed to meet 02 and mixing requirements.