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HomeMy WebLinkAboutNC0025321_Application (ATC)_20210729 mcgill Shaping Communities Together .411 July 22, 2021 Ms. Min Xiao RECEIVED Complex Permitting Unit JUL 2 9 2021 NCDEQ Division of Water Resources Water Quality Permitting Section 9th Floor Archdale Building NCDEQIDWRINPDES 512 North Salisbury Street Raleigh, North Carolina 27604 RE: Authorization to Construct Application Wastewater Treatment Plant Sludge Storage Tank Improvements Town of Waynesville, Haywood County, North Carolina Dear Ms. Xiao: On behalf of the Town of Waynesville, enclosed is the Authorization to Construct Application submittal package for the above referenced project. The submittal package consists of one hard copy and two electronic copies on CD of the following: 1. Application for Authorization to Construct Permit 2. Project Plans 3. Project Specifications 4. Design Calculations 5. Residuals Management Plan 6. NPDES and Residuals Permits The project proposes to convert the existing anaerobic digester into an aerated sludge storage tank.The anaerobic digestion equipment was previously removed in 2020 due to safety concerns. The project generally consists of installation of a new positive displacement blower, diffused aeration system, yard piping, and electrical improvements. Should you have any questions or need any additional information please feel free to call our office at 828-252-0575. Sincerely, MCGILL ASSOCIATES, P.A. Nelson Heringer, PE, Project Engineer Enclosures cc: Rob Hites, Town Manager MJ Chen, PE, PhD, McGill Associates MCGILL ASSOCIATES 55 BROAD STREET,ASHEVILLE,NC 28801/828.252.0575/MCGILLASSOCIATES.COM 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 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-permits/wastewater-branch/npdes-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 A. APPLICANT Applicant's name Town of Waynesville Signature authority's name per 15A NCAC 02T.0106(b) Rob Hites Signature authority's title Town Manager Complete mailing address 16 South Main Street,Waynesville, NC 28786 Telephone number 828.452.2491 Email address rhites@waynesvillenc.gov B. PROFESSIONAL ENGINEER Professional Engineer's name Nelson Heringer Professional Engineer's title Project Engineer North Carolina Professional Engineer's License No. 050993 Firm name McGill Associates, P.A. Firm License number C-0459 Complete mailing address 55 Broad Street,Asheville, NC 28801 Application for Authorization to Construct Permit(FORM ATC-12-14) Page 1 State of North Carolina ,.A Department of Environmental Quality Division of Water Resources Water Resources ENVIRONMENTAL QUALITY APPLICATION FOR AUTHORIZATION TO CONSTRUCT PERMIT(FORM ATC-12-14) Telephone number 828.252.0575 Email address C. NPDES PERMIT NPDES Permit number NC0025321 Current Permitted flow(MGD)—include permit 6 MGD flow phases if applicable D. PROJECT DESCRIPTION Provide a brief description of the project: Conversion of the existing anaerobic digester into an aerated sludge storage tank including installation of a membrane tube diffused aeration system, installation of a rotary lobe blower, and associated yard piping,control panels,and electrical site work. 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 ,.a Department of Environmental Quality Division of Water Resources 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 Z Process Mechanical ❑ Not Applicable ❑ Structural ® Not Applicable • Electrical 0 Not Applicable ® Instrumentation/Controls 0 Not Applicable ❑ Architectural ® Not Applicable 0 Building Mechanical ® Not Applicable 0 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 0 Not Applicable O Structural ® Not Applicable ® Electrical 0 Not Applicable ® Instrumentation/Controls 0 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) ❑ 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. 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:See Sheet G-002. 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: Z Demonstration of how peak hour design flow was determined with a justification of the selected peaking factor. ® Influent pollutant loading demonstrating how the design influent characteristics in Section 4.B.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. ® 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. ® Buoyancy calculations for all below grade structures. ® Supporting documentation that the specified auxiliary power source is capable of powering all essential treatment units. 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 x Soil Erosion and Sediment Control x USCOE /Section 404 Permit x Water Quality Certification (401) x USCOE/Section 10 x Application for Authorization to Construct Permit(FORM ATC-12-14) Page 4 State of North Carolina r'a Department of Environmental Quality Division of Water Resources Water Resources ENVIRONMENTAL QUALITY APPLICATION FOR AUTHORIZATION TO CONSTRUCT PERMIT(FORM ATC-12-14) !, Stormwater Management Plan x CAMA x NCDOT Encroachment Agreement x Railroad Encroachment Agreement x Other: x 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:n/a;facility is not new or expanding Plant Flows Existing Plant Design MGD Current NPDES Permit Limit MGD Current Annual Average (past 12 months) MGD For Past 12 Months: For Past 24 Months: Start Date: month/yr Start Date: month/yr End Date: month/yr End Date: month/yr Maximum Month MGD MGD Maximum Day MGD 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❑ 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 9 mg/L Summer 9 mg/L Summer (NH3 N) mg/L 23.1 mg/L 1,156 lb/day 21 mg/L Winter 21 mg/L Winter Biochemical 30 mg/L Summer 30 mg/L Summer Oxygen Demand 173 mg/L 220 mg/L 11,009 lb/day (BOD5) 30 mg/L Winter 30 mg/L Winter Fecal Coliform 200 per 100 mL 200 per 100 mL Nitrate+Nitrite Nitrogen(NO3-N + mg/L mg/L NO2-N) Total Kjeldahl mg/L Nitrogen mg/L mg/L Total Nitrogen lb/year lb/year mg/L mg/L Total Phosphorus mg/L mg/L lb/day lb/year lb/year Total Suspended 219 mg/L 260 mg/L 13,010 lb/day 30 mg/L 30 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❑ No. If no,describe how and why the Permit Limits will not be met: 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: 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 QUALITY APPLICATION FOR AUTHORIZATION TO CONSTRUCT PERMIT(FORM ATC-12-14) 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: 6. Per 1SA 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): 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:The plant is enclosed by the fence and gate. 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:All improvements specific to this project are located outside of the 100-year flood plain. 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 Grit Removal Flow Equalization -- gallons Primary Clarifier Circular ft diameter; ft side water depth Primary Clarifier Rectangular square feet; ft side water depth • Other 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 Application for Authorization to Construct Permit(FORM ATC-12-14) Page 8 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) Anaerobic Zones/Tanks gallons Sequencing Batch Reactor(SBR) gallons Membrane Bioreactor(MBR) -- gallons Secondary Clarifier Circular Secondary Clarifier Rectangular square feet; ft side water depth Other 3. TERTIARY TREATMENT No.of Plan Sheet Specification Calculations Treatment Unit Type Size per Unit Provided? Units 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 square feet Tertiary Membrane Filtration square feet Post-Treatment Flow Equalization -- gallons Post-Aeration gallons Other 4. DISINFECTION No.of Plan Sheet Specification Calculations Treatment Unit Provided? Units Type Size per Unit Reference Reference (Yes or No) gal/day per bank at Ultraviolet Light (Parallel;in peak hourly flow; series) number of banks; number of lamps/bank Chlorination liquid(Gas; gallons of contact tank/unit tablet; liquid) Dechlorination liquid(Gas; gallons of contact tank/unit tablet; liquid) 5. RESIDUALS TREATMENT - - No.of Plan Sheet Specification Calculations Treatment Unit Provided? Units Type Size per Unit Reference Reference (Yes or No) Gravity Thickening Tank Gravity Application for Authorization to Construct Permit(FORM ATC-12-14) Page 9 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) Mechanical Thickening/ Dewatering Aerobic Digestion gallons Anaerobic Digestion gallons Composting dry lb/hour Drying dry lb/hour Aerated Other 1 Sludge Holding 521,680 gal C-102, 103 465131 YES 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 Pumps Purpose Type each pump Reference Reference GPM I TDH 7. MIXERS Power of No.of Plan Sheet Specification Location Purpose Type each Mixer Mixers (HP) Reference Reference 8. BLOWERS Capacity of No.of Plan Sheet Specification Location Purpose Type each Blower Blowers (CFM) Reference Reference ByAerated Sludge 1 Aeration Rotary Lobe 2121 C-102,C-501 431133 Holding Tank Application for Authorization to Construct Permit(FORM ATC-12-14) Page 10 State of North Carolina 111Z7,, Department of Environmental Quality Division of Water Resources Water Resources ENVIRONMENTAL QUALITY APPLICATION FOR AUTHORIZATION TO CONSTRUCT PERMIT(FORM ATC-12-14) 9. ODOR CONTROL No.of Plan Sheet Specification Location Units Purpose Type Reference Reference D. SETBACKS—COMPLETE FOR NEW WASTEWATER TREATMENT STRUCTURES 1. The minimum distance for each setback parameter to the wastewater treatment/storage units per 15A NCAC 02T.0506(b) are as follows: Minimum Distance Is Minimum Distance Required from Nearest Requirement met by the Setback Parameter 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 ®Yes ❑ No waterbodies,and wetlands) Any well with exception of monitoring wells 100 ft ®Yes ❑ No Any property line 50 ft ®Yes ❑ No 2. Have any setback waivers been obtained per 15A NCAC 02T .0506(d)? ❑ Yes or ❑ No. 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: Application for Authorization to Construct Permit(FORM ATC-12-14) Page 11 State of North Carolina ITC Department of Environmental Quality Division of Water Resources Water Resources ENVIRONMENTAL DUALITY 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, Nelson B. Heringer,attest that this application package for an Authorization to Construct (Typed Name of Professional Engineer) for the Waynesville WWTP Sludge Storage Tank Improvements. (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 Engineer's seal with written signature placed over or adjacent to the seal and dated: yktj of ESS p ��ti'%, S /ii,/ • 050993 Z S 4CI E i 4k-z , o" ei' Application for Authorization to Construct Permit(FORM ATC-12-14) Page 12 State of North Carolina Department of Environmental Quality Division of Water Resources Water Resources ENVIRONMENTAL QUAL.I T APPLICATION FOR AUTHORIZATION TO CONSTRUCT PERMIT(FORM ATC-12-14) SECTION 6: APPLICATION CERTIFICATION BY APPLICANT Applicant's Certification per 15A NCAC 02T .0106(b): I, Rob Hites,Town Manager,attest that this application package for an Authorization to Construct (Typed Name of Signature Authority and Title) for the Sludge Storage Tank Improvements. (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. Signature: �-', ��i� Date: 7 !L 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: (919) 707-3644 Application for Authorization to Construct Permit(FORM ATC-12-14) Page 13 ROY COOPER � a Go,wmOr :yr MICHAEL S. REGAN. Secretary Water Resources S. JAY ZIMMERMAN ENVIRONMENTAL QUALITY Llrector January 26,2017 David Foster Director of Public Services PO Box 100 Waynesville,NC 28786 Subject: Final NPDES Permit Renewal Permit No.NC0025321 Waynesville WWTP Haywood County Facility Class IV SIC 4952 Dear Mr.Foster: 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). On December 9, 2016, a letter was received from Preston Gregg, Town Engineer for the Town of Waynesville. The letter requested that no changes from the previous permit (except for the eDMR) be implemented until plant upgrades can be assessed.The Division understands that upgrades at the plant are necessary and that implementing too many changes can be difficult.The NPDES permit is only reviewed once every five years and effluent limitations must be reviewed along with implementing any statutory and administrative revisions that have occurred during that period. As you recognized the eDMR requirement is required by Federal Regulations and must be implemented. In addition,the changes in the permit requiring a Mercury Minimization Plan and the need to test mercury using EPA test method 1631E are required as part of the Statewide Mercury TMDL adopted in 2012,Please note,as stated below in this letter,a sample MMP was developed through a stakeholder review process and has been placed on the Division website to help guide the permittees through this requirement. Furthermore,the requirement to monitor for cyanide is necessary because the reasonable potential analysis on the effluent at the plant showed that the predicted concentration was greater than 50%of the allowable discharge limitation. Therefore, monitoring is required to confirm that Water quality standards are not being exceeded. Since copper and zinc limitations and monitoring requirements have been removed from the permit this should not affect overall monitoring costs.Lastly,changes to Special Conditions A.(2.)and A.(3.)were made simply to clarify the requirements. R ECEIVED Olvisiondmm 011. MAR 1 0 2 017 State of North Carolina I Environmental Quality I Wald Resources 1617 Mail service Center 1 Raleigh.North Carolina 27699-1617 9197079000 , : _, •, n : ,fir. a ," Page 2 of 3 The removal rate was changed to 85%because an evaluation of the average BOD5 and TSS influent and effluent data for the past two years showed that the treatment facilitywas able to consistentlyachieve it. However,if the Town can demonstrate the 85%removal rate cannot be met due to less concentrated influent wastewater or any other reason allowed under 40 CFR 133.103(d),the requirement can be reduced. As stated previously in the cover letter with the draft permit, the final permit includes the following changes from your current permit: • The requirement to begin 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.(5.)] For information on eDMR,registering for eDMR and obtaining an eDMR user account,please visit the following web page: http://portal.ncdenr.org/weblwq/admin/bog/ipu/edmr. For information on EPA's proposed NPDES Electronic Reporting Rule,please visit the following web site:http://www2.ena.gov/compliance/n osed-ndes-electronic-re ortin -rule. roP P P g • A Mercury Minimization Plan(MMP)has been added to your NPDES permit. [See Special Condition A. (4.)] The permittee shall develop and implement a mercury minimization plan during this permit term. The MMP shall be developed by August 28, 2017 (within 180 days of the NPDES Permit Effective Date),and shall be available for inspection on-site. A sample MMP was developed through a stakeholder review process and has been placed on the Division website for guidance (http://portal.ncdenr.org/web/wq/swp/ps/npdes,under Model Mercury Minimization Plan). • A review of effluent BOD5 and TSS influent and effluent data shows the 30-day average percent removal is greater than 85%.Footnote 143 in section A.(1)has been revised from 75%to 85%to reflect this improvement.In accordance with 40 CFR 133.103(d), i The Regional Administrator or, if appropriate, State Director is authorized to substitute either a lower percent removal requirement or a mass loading limit for the percent removal requirements set forth in §§ 133.102(a)(3), 133.102(a)(4Xiii), 133.102(b)(3), 102.105(a)(3), 133.105(b)(3) and 133.105(e)(1)(iii) provided that the permittee satisfactorily demonstrates that: (1) The treatment works is consistently meeting,or will consistently meet,its permit effluent concentration limits but its percent removal requirements cannot be met due to less concentrated influent wastewater,(2)to meet the percent removal requirements, the treatment works would have to achieve significantly more stringent limitations than would otherwise be required by the concentration-based standards, and (3) the less concentrated influent wastewater is not the result of excessive 1/I.The determination of whether the less concentrated wastewater is the result of excessive VI will use the definition of excessive 1/1 in 40 CFR 35.2005(b)(l6)plus the additional criterion that inflow is nonexcessive if the total flow to the POTW(i.e., wastewater plus inflow plus infiltration) is less than 275 gallons per capita per day. As with previous permits,the Town will need to satisfactorily demonstrate that a lower percent removal requirement is still appropriate in order to maintain the 75% removal requirement in the permit. • Effluent sampling data for copper and zinc showed concentrations were all below detection limits 1 p l�'J�I �g` the penoror Jan. 2012 through Aug. 2016.No limitations and monitoring for copper and zinc I 1 { • Page 3 of 3 are required. The copper and zinc limitations and monitoring requirements have been removed from the permit renewal. • Monitoring requirements for cyanide have been added at a monitoring frequency of quarterly. • Some of the wording has changed in Special Condition A. (2.),Chronic Toxicity Permit Limit,please review each paragraph carefully. • Special Condition A.(3.) has been modified to include the specific three years in which the Effluent Pollutant Scans shall be performed (2018, 2019, and 2020). In addition, at the end of the Special Condition, 2nd species Toxicity Testing Requirements for municipal permit renewals per Federal Regulations[40 CFR 122.21(j)(5)1 have been added. • Please note, that low level effluent mercury data is required for compliance review, therefore, the Permittee will be required to monitor mercury as part of its effluent pollutants scans,using EPA method 1631 E. If any parts,measurement frequencies or sampling requirements contained in this permit are unacceptable to you,you have the right to an adjudicatory hearing upon written request within thirty(30)days following receipt of this letter. This request must be in the form of a written petition,conforming to Chapter 150B of the North Carolina General Statutes, and filed with the Office of Administrative Hearings (6714 Mail Service Center,Raleigh,North Carolina 27699-6714). Unless such demand is made,this decision shall be final and binding, Please note that this 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. If you have questions concerning the draft permit for your facility,please contact Julie Grzyb by email at julie.grzyb@ncdenr,gov or call at(919)807-6389. Sincerely 44, ay Zimmerman,P.G. vector,Division of Water Resources,NCDEQ Hardcopy: NPDES Files • Central Files DWR/Raleigh Regional Office/Water Quality e-copy: EPA Region IV Asheville Regional Office/DWR—Water Quality Regional Operations Section Susan Meadows,Aquatic Toxicity Branch Maureen Kinney,Wastewater Operator Certification&Training Permit No. NC0025321 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 provision 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 Waynesville is hereby authorized to discharge wastewater from a facility located at the Waynesville Wastewater Treatment Plant 566 Walnut Trail Waynesville Haywood County to receiving waters designated as the Pigeon River in the French Broad River Basin in accordance with effluent limitations, monitoring requirements, and other conditions set forth in Parts I, II, III, and IV hereof. The permit shall become effective March 1, 2017. This permit and the authorization to discharge shall expire at midnight on January 31, 2021 Signed this day January 26, 2017. I - S .y Zimme'w ' . u sion of Water Resources By Authority of the Environmental Management Commission Permit No. NC0025321 SUPPLEMENT TO PERMIT COVER SH EET All previous NPDES Permits issued to this facility, whether for operation or discharge are hereby revoked, and as of this 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 Waynesville is hereby authorized to: 1. Continue to operate an existing 6.0 MGD wastewater treatment facility consisting of; • bar screen • aerated grit chamber ■ dual primary clarifiers ■ primary lift station • four aeration basins with coarse air diffusion • two secondary clarifiers with return sludge • chlorine contact basin • two chlorinators • dechlorination equipment • instrumented flow measurement • standby power • a primary sludge gravity thickener • a secondary sludge gravity thickener • a gas mixed floating cover anaerobic digester • belt filter press and • sludge stabilization equipment. This wastewater treatment facility is located at the Waynesville Wastewater Treatment Plant (566 Walnut Trail, Waynesville) in Haywood County. 2. Discharge wastewater from said treatment works at the location specified on the attached map into the Pigeon River, which are classified Class C waters in the French Broad River Basin. Page 2 of 9 Permit No. NC0025321 PART I. A (1). EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS [15A NCAC 02B .0400 et seq., 02B .0500 et seq.] During the period beginning on the effective date of the permit and lasting until expiration, the permittee is authorized to discharge from outfall(s) serial number 001. Such discharges shall be limited and monitored' by the Permittee as specified below: k[�.Y rrc }.. :T 'K. rt 3'• `3 t 1L 1Y7?���� T3 tiv.".�a='1� f x Y�wi fltb rr4 G., .::.Y..' :' Y. '�'t,Y`�..v :c6 S fii .-al` T`.5,, n1 </s �Y �."; .i 1 1 1 J L`0 rs y C r >,t ' �JVN C74.4 I�k.¢� {ei'' 's' f+ili`4't�}' il.� 'F J ..v `' z�` a+�• S.. 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Quarterly Grab E pH8 Daily Grab E Mercury Minimization Plan9 Notes: 1. The permittee shall submit Discharge Monitoring Reports electronically using NC DWR's eDMR application system. See Special Conditions A. (5). 2. Sample locations: E - Effluent, I - Influent, U - Upstream at River Mile 55.5, D- Downstream at River Mile 53.5 Instream monitoring shall be grab samples taken 3/wk (Jun-Sep) and 1/wk (Oct-May). 3. The monthly average effluent BOD5 and Total Suspended Solids concentrations shall not exceed 15% of the respective influent value (85%removal). 4. The daily average dissolved oxygen effluent concentration shall not be less than 6.0 mg/L. 5. Limitation applies only if chlorine is added for disinfection. The facility shall report all effluent TRC values reported by a NC certified laboratory including field certified. However, effluent values below 50 ug/L will be treated as zero for compliance purposes. 6. Chronic Toxicity (Ceriodaphnial, P/F, 9%; February, May, August, and November; See Part A. (2). 7. The Division shall consider all cyanide values reported below 10 pg/L to be"zero"for compliance purposes. However, Discharge Monitoring Reports (DMRs) shall record all values reported by a North Carolina-certified laboratory (even if these values fall below 10 ug/L). 8. The pH shall not be less than 6.0 standard units nor greater than 9.0 standard units. 9. A Mercury Minimization Plan (MMP) is now required. See Special Condition A. (4). There shall be no discharge of floating solids or visible foam in other than trace amounts, Page 3 of 9 , Permit No. NC0025321 A. {2) CHRONIC TOXICITY PERMIT LIMIT {Quarterly) [15A NCAC 02B .0200 et seq.] CHRONIC TOXICITY PERMIT LIMIT (QUARTERLY) The effluent discharge shall at no time exhibit observable inhibition of reproduction or significant mortality to Ceriodaphnia dubia at an effluent concentration of 9%. 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 February, May, August, and November. 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. 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. Page 4 of 9 • Permit No. NC0025321 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. 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(es N) C0610 1,2-dlchloroethane 32103 Bis(2chloroethoxy)methane 34278 Chlorine(total residual,TRC) 50063 Trans-1,2-dlchloroethylene 34546 Bis(2chloroethyl)ether 34273 Dissolved oxygen 00300 1,1-dichloroethylene 34501 Bis(2-chlarolsopropy1)ether 34283 Nitrate 00620 1,2-dichloropropane 34541 Bis(2-ethylhexyl)phthalate 39100 Nitrite 00615 1,3-dlchloropropylene 77163 4-bromophenyl phenyl ether 34636 KJeldahl nitrogen 00625 Ethyibenzene 34371 Butyl benzyl phthalate 34292 Oland grease 00556 Methyl bromide 34413 2-chlorcnaphthalene 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 Tetrachioroethylene 34475 DI-n-octyl phthalate 34596 Arsen c 01002 Toluene 34010 Dibenzo(a,h)anthracene 34556 Beryllium 01012 1,1,1-trichioroethane 34506 1,2-dichlorobenzente 34536 Cadmium 01027 1,1,2-trlchioroelhane 34511 1,3-dichlorobenzene 34566 Chromiurn 01034 Tdch'aroethyiene 39180 1,4-d chlorobenzene 34571 Copper Vinyl chloride 39175 33-dichlorobenzidine 34631 lead 01051 Acid-extractable compounds: Diethyl phthalate 34336 Mercury(Method 1631E) COMER Pchtoro.m-creso 34452 Dimethyl phtha'ate 34341 Nickel 01067 2-chlorophenol 34586 2,4-dInitrotcluene 34611 Selenium 01147 2,4-dlchiorophenol 34601 2,6-dlnllrotoluera C0626 Silver 01077 2,4-dirnethylphenol 34606 1,2•diphenylhydrazine 34346 Thallium 01059 4,6-dinitro-ocresol 34657 Fluoranthene C0376 Zinc 01092 2,4-dinlirophenol 34616 Fluorene 34381 Cyanide 00720 2-nitrophenol 34591 Hexachlorobenzene C0700 Total phenolic compounds 32730 4-nitrophenol 34646 Hexachlorobuladiene 39702 Volatile organic compounds: Pentachlorophenol 39032 Hexachlorocyclo-pentadiene 34386 Acrotein 34210 Phenol 34694 Hexachloroethane 34396 Acryonitrite 34215 2 s,6-trichlorophenol 34621 Indeno(1,2,3-cd)pyrene 34403 Benzene 34030 Hasa-neutref compounds: Isophorone 34408 Brornoform 32104 Acenaphthene 34205 Naphthalene 34696 Carbon tetrachloride 32102 Acenaphthylene 34200 Nilrobenzene 34447 Chlorcbenzene 34301 Anthracene CO220 N-nitrosodl-n-propylamine 34428 Chlorodlbromomethans 34306 Benzidine 39120 N-nitrosodimethylamine 34438 Chloroethane 85811 Benzo(a)anthracene 34526 N-nitrosodiphanylamine 34433 2chloroeihyl vinyl ether 34576 Benzo(a)pyrene 34247 Phenanthrene 34461 Chloroform 32106 3,4 benzofluoranthene 34230 Pyrene 34469 Dlchlorobromomethane 32101 Benzo(ghi)perylene • 34521 1,2,4-trlchiorobenzene 34551 1,1-dichloroeihane 34496 Benzo(k)fluoranthene 34242 Page 5 of 9 Permit No. NC0025321 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 31st 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) and EPA Municipal Application Form 2A. The US EPA requires four (4) toxicity tests for a test organism other than the test species currently required in this permit. The second 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. The second species tests must be multiple concentration (5 concentrations plus the control). These tests shall be performed for acute or chronic toxicity, whichever is specified in this permit. POTWs performing NPDES chronic Ceriodaphnia testing should perform chronic Fathead minnow testing. POTWs performing NPDES acute Fathead Minnow testing should perform acute Ceriodaphnia testing. POTWs performing NPDES chronic Mysid shrimp testing should perform chronic Silverside Minnow testing. The second 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) MERCURY MINIMIZATION PLAN (MMP) (G.S. 143-215.1 (b)] The permittee shall develop and implement a mercury minimization plan during this permit term. The MMP shall be developed by August 28, 2017 (within 180 days of the NPDES Permit Effective Date), and shall be available for inspection on-site. A sample MMP was developed through a stakeholder review process and has been placed on the Division website for guidance (http://portal.ncdenr.org/web/wcg/swpJps/npdes, under Model Mercury Minimization Plan). The MMP should place emphasis on identification of mercury contributors and goals for reduction. Results shall be summarized and submitted with the next permit renewal. Performance of the Mercury Minimization Plan will meet the requirements of the TMDL (Total Maximum Daily Load) for mercury approved by USEPA on October 12, 2012, unless and until a Waste Load Allocation specific to this facility is developed and this NPDES permit is amended to require further actions to address the Waste Load Allocation. Page 6 of 9 Permit No. NC0025321 A. (5) 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.) (all The permittee shall report discharge monitoring data electronically using the NC DWR's Electronic Discharge Monitoring Report (eDMR) internet 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 internet. 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). • Page 7 of 9 Permit No. NC0025321 2. Electronic Submissions In accordance with 40 CFR 122.41(1)(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 Rule is found at: http://www2.epa.gov/compliance/final-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:I/deq.nc.gov/about/divisions/water-resources/edmr 4. Signatory Requirements [Supplements Section B. 111.) (b) and Supersedes Section B. (11.)(d)I 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: Page 8 of 9 Permit No. NC0025321 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: '1 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," 5. Records Retention [Supplements Section D. (6.11 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]. 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NC0025321 - Town of Waynesville WWTP Facility 414dillIF Latitude: 35°33'02" Sub-Basin/MX: 04-03-05/06010105LI Location Longitude: 82°56'58" County: Haywood Ouad#: E7SW/Clyde,NC Stream Class: C Town of Waynesville Receiving Stream: Pigeon River • North NC0025321 Permitted Flow: 6.0 MGT) Map not to scale Waynemilie WWTP PAT MCCRORY DONALD R. VAN DER VAART Secretary Water Resources ENVIRONMENTAL OUALITY S. JAY ZIMMERMAN [hrecmr July 20,2016 MICHAEL J.MORGAN-TOWN MANAGER TOWN OF WAYNESVILLE POST OFFICE BOX 100 WAYNESVILLE,NORTH CAROLINA 28786 Subject: Permit No. WQ0013116 Town of Waynesville Class A Distribution Program Distribution of Class A Residuals Haywood County Dear Mr. Morgan: In accordance with your permit renewal request received February 5, 2016, and subsequent additional information received May 16, 2016, we are forwarding herewith Permit No. WQ0013116 dated July 20,2016,to the Town of Waynesville for the continued operation of the subject residuals management program. This permit shall be effective from the date of issuance until June 30, 2021, shall void Permit No. WQ0013 116, and shall be subject to the conditions and limitations as specified therein. Please pay particular attention to the monitoring requirements listed in Attachment A for they may differ from the previous permit issuance. Failure to establish an adequate system for collecting and maintaining the required operational information shall result in future compliance problems. Please note the following permit conditions are new since the last permit issuance dated January 26,2007: ➢ Condition I11.4.-This condition requires copies of the permit and the O&M Plan to be present whenever bulk residuals are applied. ➢ Condition 1I1.5.- This condition requires spill control provisions to be maintained in transport and application vehicles during residual application events. ➢ Condition I11.7.-This condition requires that a suitable vegetative cover be established on all bulk application areas. > Condition 11I.9.-This condition requires the existence of a Utilization Agreement between the Permittee and the entity receiving the bulk residuals. ➢ Condition 111.10.-This condition lists the minimal requirements for a Utilization Agreement. > Condition II1.13. - This condition prohibits distributing residuals to anyone known to be applying residuals contrary to the conditions of the Utilization Agreement. State of North Carolina I Environmental Quality I Water Resources I Water Quality Pennitting I Non-Discharge Permitting 1617 Mail Service Center Raleigh,North Carolina 27699-I617 919 807 6464 Mr.Michael J.Morgan July 20,2016 Page 2 of 2 > Condition VI.7. — This condition prohibits the expansion of the facility under certain circumstances. If any parts, requirements or limitations contained in this permit are unacceptable, the Permittee has the right to request an adjudicatory hearing upon written request within 30 days following receipt of this permit. This request shall be in the form of a written petition,conforming to Chapter 150B of the North Carolina General Statutes, and filed with the Office of Administrative Hearings at 6714 Mail Service Center,Raleigh,NC 27699-6714. Unless such demands are made,this permit shall be final and binding. If you need additional information concerning this permit, please contact David Goodrich at(919) 807-6352 or david.goodrich@ncdenr.gov. Sincerely, uS.Jay Zimmerman,P.G.,Director Division of Water Resources cc: Haywood County Health Department(Electronic Copy) Asheville Regional Office,Water Quality Regional Operations Section(Electronic Copy) Beth Buffington—Protection and Enforcement Branch(Electronic Copy) Digital Permit Archive(Electronic Copy) Central Files NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION DEPARTMENT OF ENVIRONMENTAL QUALITY RALEIGH DISTRIBUTION OF CLASS A RESIDUALS PERMIT In accordance with the provisions of Article 21 of Chapter 143,General Statutes of North Carolina as amended,and other applicable Laws,Rules,and Regulations PERMISSION IS HEREBY GRANTED TO Town of Waynesville Haywood County FOR THE continued operation of a residuals management program for the Town of Waynesville and consisting of the distribution of Class A residuals generated by the approved facility listed in Attachment A with no discharge of wastes to surface waters, pursuant to the application received February 5, 2016, and subsequent additional information received by the Division of Water Resources, and in conformity with other supporting data subsequently filed and approved by the Department of Environmental Quality and considered a part of this permit. The use and disposal of residuals are regulated under Title 40 Code of Federal Regulations Part 503. This permit does not exempt the Permittee from complying with the federal regulations. This permit shall be effective from the date of issuance until June 30, 2021, shall void Permit No. WQ0013116 issued January 26, 2007, and shall be subject to the following specified conditions and limitations: SCHEDULES 1. No later than six months prior to the expiration of this permit, the Permittee shall request renewal of this permit on official Division forms. Upon receipt of the request, the Division will review the adequacy of the facilities described therein,and if warranted,will renew the permit for such period of time and under such conditions and limitations as it may deem appropriate. Please note Rule 15A NCAC 02T.0105(d)requires an updated site map to be submitted with the permit renewal application. [15A NCAC 02T.0108(b)(2),02T.0105(d),02T.0109] II. PERFORMANCE STANDARDS 1. The subject residuals management program shall be effectively maintained and operated at all times so there is no discharge to surface waters, nor any contravention of groundwater or surface water standards. In the event the facilities fail to perform satisfactorily, including the creation of prolonged nuisance conditions due to improper operation and maintenance,the Permittee shall immediately cease distribution of residuals, contact the Asheville regional office supervisor, and take any immediate corrective actions. [G.S. 143-215.1] WQ0013116 Version 4.0 Shell Version 160201 Page 1 of 11 2. This permit shall not relieve the Permitee of responsibilityfor damages to groundwater or surfac e water resulting from the operation of this residuals management program. [15A NCAC 02B .0200, 02L.0100] 3. Only residuals generated by the facilities listed in Attachment A are approved for distribution in accordance with this permit. [G.S. 143-215.1] 4. Pollutant concentrations in residuals distributed or applied to any land application site shall not exceed the following Ceiling Concentrations or Monthly Average Concentrations(i.e.,dry weight basis): Ceiling Concentration Monthly Average Parameter (milligrams per kilogram) Concentration (milligrams per kilogram) Arsenic 75 41 Cadmium 85 39 Copper 4,300 1,500 Lead 840 300 Mercury 57 17 Molybdenum 75 n/a Nickel 420 420 Selenium 100 100 Zinc 7,500 2,800 [I 5A NCAC 02T.1105] 5. Residuals that are distributed shall meet Class A pathogen reduction requirements in 15A NCAC 02T .1106(a)and(b). Exceptions to this requirement shall be specified in Attachment A. [15A NCAC 02T .1106] 6. Biological residuals (i.e. residuals generated during the treatment of domestic or animal processing wastewater, or the biological treatment of industrial wastewater, and as identified in Attachment A) that are distributed shall meet one of the vector attraction reduction alternatives in 15A NCAC 02T .1107(a). Exceptions to this requirement shall be specified in Attachment A. [15A NCAC 02T.1107] 7. Setbacks for treatment and storage facilities shall be as follows: Setback Description Setback (feet) Habitable residence or place of public assembly under separate ownership or not 100 to be maintained as part of the project site Property lines 50 Private or public water supply 100 Surface waters(streams—intermittent and perennial,perennial waterbodies,and J0 wetlands) Wells with exception to monitoring wells 100 [15A NCAC 02T.1108] WQ0013 116 Version 4.0 Shell Version 160201 Page 2 of 11 8. Setbacks for Class A land applied bulk residuals shall be as follows: Setback by residual type Setback Description (feet) Liquid Cake Private or public water supply 100 100 Surface waters(streams—intermittent and perennial, 100 25 __perennial waterbodies,and wetlands) Surface water diversions(ephemeral streams, waterways, ditches) 25 0 Groundwater lowering ditches(where the bottom of 25 0 the ditch intersects the SHWT) Wells with exception to monitoring wells 100 100 Bedrock outcrops 25 0 1 Unless otherwise noted in Attachment A, "cake" residuals are those that have greater than 15% solids by weight and can be stacked without flowing, as well as can be handled, transported and spread as a solid (e.g., using a backhoe, front end loader, slinger spreader, broadcast spreader or other equipment designed for handling solid materials) without leaving any significant liquid fraction behind. [15A NCAC 02T.1108] 9. Bulk residuals and other sources of Plant Available Nitrogen(PAN)shall not be applied in exceedance of agronomic rates. Appropriate agronomic rates shall be calculated using expected nitrogen requirements based on the determined Realistic Yield Expectations(RYE)using any of the following methods: a. Division's pre-approved site specific historical data for specific crop or soil types by calculating the mean of the best three yields of the last five consecutive crop harvests for each field. b. North Carolina Historical Data for specific crop and soil types as provided by North Carolina State University Department of Soil Science (http://nutrients.soil.ncsu.edu/yields/index.php). A copy shall be kept on file and reprinted every five years in accordance with Condition IV.6. c. If the RYE cannot be determined using methods (a)or(b)above, the Permittee may use the RYE and appropriate nutrient application rates reported in any of the following documents: i. Crop management plan as outlined by the local Cooperative Extension Office, the North Carolina Department of Agriculture and Consumer Services, the Natural Resource Conservation Service,or other agronomist. ii. Waste Utilization Plan as outlined by the Senate Bill 1217 Interagency Group - Guidance Document: Chapter 1 (http://www.ncagr.gov/SWC/techldocuments/9th Guidance Doc 100109.pdf). iii. Certified Nutrient Management Plan as outlined by the Natural Resources Conservation Services (NRCS). These plans must meet the USDA-NRCS 590 Nutrient Management Standards(ftp://ftp-fc.sc.egov.usda.gov/NHQ/practice-standards/standards/590.pdf). d. If the RYE and appropriate nutrient application rates cannot be determined, the Permittee shall contact the Division to determine necessary action. [15A NCAC 02T .1109(b)(1)(k)] WQ0013116 Version 4.0 Shell Version 160201 Page 3 of 1 I 10. The Permittee shall not distribute Class A residuals that have a sodium adsorption ratio(SAR)of 10 or higher without prior written Division approval. The Permittee may seek approval by demonstrating that the entity accepting the residuals is: aware of the effects of a high SAR content; has agreed on proper residual application rates; and has agreed to operational considerations to ensure that the high SAR content will not adversely impact the receiving sites. Recommendations regarding sodium application rate,soil amendments(e.g.,gypsum,etc.)or a mechanism for maintaining site integrity and conditions conducive to crop growth,can be obtained from the local Cooperative Extension Office,the Department of Agriculture and Consumer Services,the Natural Resource Conservation Service,a North Carolina Licensed Soil Scientist,or an agronomist. [15A NCAC 02T.0108(b)(1)] III. OPERATION AND MAINTENANCE REQUIREMENTS 1. The residuals management program shall be properly maintained and operated at all times. The program shall be effectively maintained and operated as a non-discharge system to prevent any contravention of surface water or groundwater standards. [15A NCAC 02T.1110] 2. The Permittee shall maintain an approved Operation and Maintenance Plan(O&M Plan)Modifications to the O&M Plan shall be approved by the Division prior to utilization of the new plan.The O&M Plan, at the minimum, shall include: a. Operational functions; b. Maintenance schedules; c. Safety measures; d. Spill response plan; e. Inspection plan including the following information: i. Names and/or titles of personnel responsible for conducting the inspections; ii. Frequency and location of inspections, including those to be conducted by the ORC, and procedures to assure that the selected location(s) and inspection frequency are representative of the residuals management program; iii. Detailed description of inspection procedures including record keeping and actions to be taken by the inspector in the event that noncompliance is observed pursuant to the noncompliance notification requirements under the monitoring and reporting section of the permit; f. Sampling and monitoring plan including the following information: i. Names and/or titles of personnel responsible for conducting the sampling and monitoring; ii. Detailed description of monitoring procedures including parameters to be monitored; iii. Sampling frequency and procedures to assure that representative samples are being collected. Fluctuation in temperature, flow, and other operating conditions can affect the quality of the residuals gathered during a particular sampling event.The sampling plan shall account for any foreseen fluctuations in residuals quality and indicate the most limiting times for residuals to meet pathogen and vector attraction reduction requirements (e.g. facilities that land apply multiple times per year but have an annual sampling frequency, may need to sample during winter months when pathogen reduction is most likely to be negatively affected by cold temperatures). [15A NCAC 02T.1100] WQ0013116 Version 4.0 Shell Version 160201 Page 4 of 11 3. Upon the Water Pollution Control System Operators Certification Commission's (WPCSOCC) classification of the facility,the Permittee shall designate and employ a certified operator in responsible charge (ORC) and one or more certified operators as back-up ORCs in accordance with 15A NCAC 08G.0201.The ORC or his back-up shall visit the facilities in accordance with 15A NCAC 08G.0204, or as specified in the most recently approved O&M plan (i.e., see Condition III.2.), and shall comply with all other conditions of 15A NCAC 08G.0204. For more information regarding classification and designation requirements,please contact the Division of Water Resources'Protection and Enforcement Branch at(919)707-9105. [1 SA NCAC 02T .0117] 4. When the Permittee land applies bulk residuals,a copy of this permit and a copy of O&M Plan shall be maintained at the land application sites during land application activities. [15A NCAC 02T .0108(b)(1)] 5. When the Permittee transports or land applies bulk residuals, the spill control provisions shall be maintained in all residuals transport and application vehicles. [15A NCAC 02T.1110] 6. When the Permittee land applies bulk residuals, adequate measures shall be taken to prevent wind erosion and surface runoff from conveying residuals from the land application sites onto adjacent properties or into surface waters. [G.S. 143-215.1] 7. When the Permittee land applies bulk residuals,a suitable vegetative cover shall be maintained on land application sites onto which residuals are applied, or application shall be in accordance with the crop management plan outlined by the local Cooperative Extension Office, the Department of Agriculture and Consumer Services,the Natural Resource Conservation Service,or an agronomist and as approved by the Division. [15A NCAC 02T .1109(b)(1)] 8. Bulk residuals shall not be land applied under the following conditions: a. If the residuals are likely to adversely affect a threatened or endangered species listed under section 4 of the Endangered Species Act or its designated critical habitat; b. If the application causes prolonged nuisance conditions; c. If the land fails to assimilate the bulk residuals or the application causes the contravention of surface water or groundwater standards; d. If the land is flooded,frozen or snow-covered,or is otherwise in a condition such that runoff of the residuals would occur; e. Within the 100-year flood elevation,unless the bulk residuals are injected or incorporated within a 24-hour period following a residuals land application event; f. During a measurable precipitation event(i.e., greater than 0.01 inch per hour), or within 24 hours following a rainfall event of 0.5 inches or greater in a 24-hour period; g. If the slope is greater than 10% for surface applied liquid residuals, or if the slope is greater than 18%for injected or incorporated bulk liquid residuals; h. If the soil pH is not maintained at 6.0 or greater,unless sufficient amounts of lime are applied to achieve a final soil pH of at least 6.0, or if an agronomist provides information indicating that the pH of the soil,residuals and lime mixture is suitable for the specified crop. Any approved variations to the acceptable soil pH(6.0)will be noted in this permit; i. If the land does not have an established vegetative cover unless the residuals are incorporated or injected within a 24-hour period following a residuals land application event. Any field that is in a USDA no-till program shall be exempted from meeting this vegetative cover requirement; j. If the vertical separation between the seasonal high water table and the depth of residuals application is less than one foot; k. If the vertical separation of bedrock and the depth of residuals application is less than one foot; WQ0013116 Version 4.0 Shell Version 160201 Page 5 of 11 1. Application exceeds agronomic rates. [I S A NCAC 02T.1109] 9. A dated Utilization Agreement between the Permittee, his subcontractor distributing and applying the residuals,and the entity agreeing to accept Class A bulk residuals shall be in place prior to distribution of the bulk residuals. The agreement shall specify the subcontractors and the agreeing entity's responsibilities. The Permittee, the subcontractor, and the entity accepting the Class A bulk residuals shall sign the Utilization Agreement. The Utilization Agreement shall have a clause allowing the recipient of the residuals to end the Utilization Agreement at any time by notifying the Permittee in writing. If the recipient of the residuals sells the property,the Utilization Agreement shall automatically terminate. If the permit is rescinded, the Utilization Agreement shall automatically terminate. The duration of the Utilization Agreement shall be one to which the Permittee, the subcontractor, and the recipient of the residuals agree. Any changes in the agreement that are necessitated by changes in the permit shall be mailed to the subcontractor and the recipient of the residuals by certified mail with return receipt. The Permittee shall keep these records on file for inspection by the Division for each Utilization Agreement while that Utilization Agreement is in force. [15A NCAC 02T.0108(b)(1),02T .1104] 10. At a minimum,the Utilization Agreement shall stipulate the following: a. By agreeing to accept the bulk Class A residuals, it is recognized that the application of these residuals is allowed under the conditions of this agreement including the prohibitions contained in Condition 111.8. Land application of Class A residuals is considered the beneficial reuse of a waste under 15A NCAC 02T .1100, and has been deemed permitted under 15A NCAC 02T .1103(4) provided the conditions of this agreement are met.Any action resulting in damages to surface water or groundwater,caused by failure to follow the conditions of this agreement,is subject to Division enforcement action; b. The person or entity accepting the bulk Class A residuals shall to the best of his knowledge meet the following application requirements: i. Class A biological residuals shall not be stockpiled for more than 30 days(after the delivery of the last load) prior to land application unless the permittee notifies the Asheville Regional Office and receives approval to exceed the 60 day limit. At a minimum, the information provided shall be the location,the date that the last load was delivered,the quantity of residuals stockpiled, the percent solids of the residuals stockpiled, measures taken to prevent stockpile runoff(e.g. placement, perimeter berms, etc.) and the anticipated date the residuals will be spread.; ii. Application of bulk residuals shall not occur within 100 feet of a public or private water supply source; iii. Application of bulk residuals shall not occur within 100 feet of any well,with the exception of Division approved monitoring wells; iv. Application of bulk residuals shall not occur within 25 feet of surface waters. c. The generator of the Class A bulk residuals shall provide information on the proper use of the residuals, including information on the nutrient quantities within the residuals and recommended application rates. A copy of the label or information sheet attached to bags or other containers,as specified in the labeling requirements under Condition III.12., is sufficient; d. The applicator or party accepting bulk residuals from the Permittee shall supply all third parties receiving bulk residuals with documentation specifying that application shall occur consistent with the utilization agreement; e. Instructions,including contact information for key personnel,shall be provided to the applicator or party receiving bulk residuals in the event that any requirements specified in the utilization agreement are not met. WQ0013116 Version 4.0 Shell Version 160201 Page 6 of 11 f. A copy of the Utilization Agreement shall be maintained at the land application sites when bulk residuals are being applied. [15A NCAC 02T.0108(b)(1),02T .1104] 11. All residuals shall be adequately stored to prevent untreated leachate runoff.The finished product may be placed on a concrete pad, placed under shelter or physically covered until it is distributed to the buyer. If an alternate storage site is used, approval must be obtained from the Division. [15A NCAC 02T.0108(b)(1)] 12. A label shall be affixed to the bag or other container in which residuals are sold or given away for land application,or an information sheet shall be provided to the person who receives Class A residuals. At a minimum,the label or information sheet shall contain the following: a. The name and address of the person who prepared the residuals; b. A statement that residual land application is prohibited except in accordance with the instructions on the label or information sheet; c. A statement identifying that this material shall be prevented from entering any public or private water supply source(including wells)and any surface water(e.g.,stream,lake,river,wetland,etc.); d. A statement that the residuals shall be applied at agronomic rates and recommended rates for its intended use. [15A NCAC 02T .1109(a)] 13. The Permittee shall not distribute bulk residuals to any person or entity known to be applying residuals contrary to the condition of the signed Utilization Agreement. The Permittee shall report to the Asheville Regional Office as per reporting conditions under Condition IV.8.any person or entity known to be applying residuals contrary to the condition of the signed Utilization Agreement. [15A NCAC 02T .1103(a)] WQ0013116 Version 4.0 Shell Version 160201 Page 7 of 11 IV. MONITORING AND REPORTING REQUIREMENTS 1. Any Division required monitoring(including groundwater,plant tissue,soil and surface water analyses) necessary to ensure groundwater and surface water protection shall be established, and an acceptable sample reporting schedule shall be followed. [15A NCAC 02T.0108(c)] 2. Residuals shall be analyzed to demonstrate they are non-hazardous under the Resource Conservation and Recovery Act(RCRA). Residuals that tests or is classified as a hazardous or toxic waste under 40 CFR Part 261 shall not be used or disposed under this permit. The analyses [corrosivity,ignitability,reactivity,and toxicity characteristic leaching procedure(TCLP)] shall be performed at the frequency specified in Attachment A,and the Permittee shall maintain these results for a minimum of five years. Any exceptions from the requirements in this condition shall be specified in Attachment A. The TCLP analysis shall include the following parameters(the regulatory level in milligrams per liter is in parentheses): Arsenic(5.0) 1,4-Dichlorobenzene(7.5) Nitrobenzene(2.0) Barium(100.0) 1,2-Dichloroethane(0.5) Pentachlorophenol(100.0) Benzene(0.5) 1,1-Dichloroethylene(0.7) Pyridine(5.0) Cadmium(1.0) 2,4-Dinitrotoluene(0.13) Selenium(1.0) Carbon tetrachloride(0.5) Endrin(0.02) Silver(5.0) Chlordane(0.03) Hexachlorobenzene(0.13) Tetrachloroethylene(0.7) Chlorobenzene(100.0) Heptachlor(and its hydroxide) Toxaphene(0.5) (0.008) Chloroform(6.0) Hexachloro-1,3-butadiene(0.5) Trichloroethylene(0.5) Chromium(5.0) Hexachloroethane(3.0) 2,4,5-Trichlorophenol(400.0) m-Cresol(200.0) Lead(5.0) 2,4,6-Trichlorophenol(2.0) o-Cresol(200.0) Lindane(0.4) 2,4,5-TP(Silvex)(1.0) p-Cresol(200.0) Mercury(0.2) Vinyl chloride(0.2) Cresol(200.0) Methoxychlor(10.0) 2,4-D(10.0) Methyl ethyl ketone(200.0) Once the residuals have been monitored for two years at the frequency specified in Attachment A,the Permittee may submit a permit modification request to reduce the frequency of this monitoring requirement. In no case shall the monitoring frequency be less than once per permit cycle. [15A NCAC 13A .0102(b),02T.1101,02T.1105] WQ0013 116 Version 4.0 Shell Version 160201 Page 8 of 11 3. An analysis shall be conducted on the Class A residuals at the frequency specified in Attachment A, and the Permittee shall maintain the results for a minimum of five years. The analysis shall include the following parameters: Aluminum Mercury Potassium Ammonia-Nitrogen Molybdenum Selenium Arsenic Nickel Sodium Cadmium Nitrate-Nitrite Nitrogen Sodium Adsorption Ratio (SAR) Calcium Percent Total Solids TKN Copper pH Zinc Lead Phosphorus Magnesium Plant Available Nitrogen (by calculation) [15A NCAC 02T.1101] 4. Residuals shall be monitored for compliance with pathogen and vector attraction reduction requirements at the frequency specified in Attachment A, and at the time indicated in the sampling and monitoring sections of the approved O&M plan.The required data shall be specific to the stabilization process utilized, and sufficient to demonstrate compliance with the Class A pathogen reduction requirements in 15A NCAC 02T .1106(a)and(b),and one vector attraction reduction requirement in 15A NCAC 02T .1107 (a) shall be met. Any exceptions from the requirements in this condition shall be specified in Attachment A. [15A NCAC 02T .1106,02T.1107,02T .1111(c)] 5. Laboratory parameter analyses shall be performed on the residuals as they are distributed,and shall be in accordance with the monitoring requirements in 15A NCAC 02B .0505. [15A NCAC 02B .0505] 6. The Permittee shall maintain records tracking all bulk residual distribution or land application events performed by the Permittee. At a minimum,these records shall include the following: a. Source of residuals; b. Date of distribution/land application; c. Name and address of recipient of residuals; d. Volume of residuals distributed to each recipient; e. Intended use of residuals; f. If land application events performed by the Permittee-Nitrogen Application Rate based on RYEs (if using data obtained from the North Carolina State University Department of Soil Science Website,the printout page shall be kept on file and reprinted every five years). [15A NCAC 02T.0109(a)] 7. Three copies of an annual report shall be submitted on or before March 151. The annual report shall meet the requirements described in the Instructions for Residuals Application Annual Reporting Forms. Instructions for reporting and annual report forms are available at http://portal.ncdenr.org/web/wq/aps/lau/reporting, or can be obtained by contacting the Land Application Unit directly. The annual report shall be submitted to the following address: Division of Water Resources Information Processing Unit 1617 Mail Service Center Raleigh,North Carolina 27699-1617 WQ0013116 Version 4.0 Shell Version 160201 Page 9 of 11 [15A NCAC 02T.1111(a)] 8. Noncompliance Notification The Permittee shall report by telephone to the Asheville Regional Office,telephone number(828)296- 4500, as soon as possible,but in no case more than 24 hours or on the next working day following the occurrence or first knowledge of the occurrence of any of the following: a. Distribution of residuals abnormal in quantity or characteristic. b. Any failure of the distribution program resulting in a release of material to surface waters. c. Any time self-monitoring indicates the facility has gone out of compliance with its permit limitations. d. Any process unit failure, due to known or unknown reasons, rendering the facility incapable of adequate residual treatment. e. Any spill or discharge from a vehicle or piping system during residuals transportation. Any emergency requiring immediate reporting(e.g.,discharges to surface waters,imminent failure of a storage structure,etc.)outside normal business hours shall be reported to the Division's Emergency Response personnel at telephone number(800)662-7956,(800)858-0368,or(919)733-3300.Persons reporting such occurrences by telephone shall also file a written report in letter form within five days following first knowledge of the occurrence. This report shall outline the actions taken or proposed to be taken to ensure that the problem does not recur. [15A NCAC 02T.0105(1), 02T .0108(b)(1)] V. INSPECTIONS 1. The Permittee shall provide adequate inspection and maintenance to ensure proper operation of the subject facilities and shall be in accordance with the approved O&M Plan. [15A NCAC 02T.0108(b)] 2. Prior to each bulk residuals distribution event,the Permittee or his designee shall inspect the residuals storage,transport and application facilities to prevent malfunctions,facility deterioration and operator errors resulting in discharges, which may cause the release of wastes to the environment, a threat to human health or a public nuisance. The Permittee shall maintain an inspection log that includes,at a minimum, the date and time of inspection, observations made, and any maintenance, repairs, or corrective actions taken. The Permittee shall maintain this inspection log for a period of five years from the date of inspection, and this log shall be made available to the Division upon request. [15A NCAC 02T.0108(b)] 3. Any duly authorized Division representative may, upon presentation of credentials, enter and inspect any property, premises or place on or related to the land application sites or facilities permitted herein at any reasonable time for the purpose of determining compliance with this permit;may inspect or copy any records required to be maintained under the terms and conditions of this permit; and may collect groundwater, surface water or leachate samples. [G.S. 143-215.3(a)(2)] VI. GENERAL CONDITIONS 1. Failure to comply with the conditions and limitations contained herein may subject the Permittee to an enforcement action by the Division in accordance with North Carolina General Statutes 143-215.6A to 143-215.6C. [G.S. 143-215.6A to 143-215.6C] 2. This permit shall become voidable if the residuals land application events are not carried out in accordance with the conditions of this permit. [15A NCAC 02T.0110] 3. This permit is effective only with respect to the nature and volume of residuals described in the permit application and other supporting documentation. [G.S. 143-215.1] WQ0013116 Version 4.0 Shell Version 160201 Page 10 of 11 • 4. The issuance of this permit does not exempt the Permittee from complying with any and all statutes, rules, regulations, or ordinances, which may be imposed by other jurisdictional government agencies (e.g.,local,state,and federal). Of particular concern to the Division are applicable river buffer rules in 15A NCAC 02B .0200; erosion and sedimentation control requirements in 15A NCAC Chapter 4 and under the Division's General Permit NCG010000;any requirements pertaining to wetlands under 15A NCAC 02B .0200 and 02H .0500; and documentation of compliance with Article 21 Part 6 of Chapter 143 of the General Statutes. [15A NCAC 02T .0105(c)(6)] 5. In the event the residuals program changes ownership or the Permittee changes his name, a formal permit modification request shall be submitted to the Division. This request shall be made on official Division forms, and shall include appropriate documentation from the parties involved and other supporting documentation as necessary. The Permittee of record shall remain fully responsible for maintaining and operating the residuals program permitted herein until a permit is issued to the new owner. [15A NCAC 02T .0104] 6. This permit is subject to revocation or unilateral modification upon 60-day notice from the Division Director,in whole or part for the requirements listed in 15A NCAC 02T.0110. [15A NCAC 02T.0110] 7. Unless the Division Director grants a variance,expansion of the permitted residuals program contained herein shall not be granted if the Permittee exemplifies any of the criteria in 15A NCAC 02T.0120(b). [15A NCAC 02T.0120] 8. The Permittee shall pay the annual fee within 30 days after being billed by the Division. Failure to pay the annual fee accordingly shall be cause for the Division to revoke this permit. [15A NCAC 02T .0105(e)(3)] Permit issued this the 20th day of July 2016 NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION FJay Zimmerman, P.G.,Director ---Division of Water Resources By Authority of the Environmental Management Commission Permit Number WQ0013116 WQ0013116 Version 4.0 Shell Version 160201 Page 11 of 11 ATTACHMENT A-Approved Residual Sources Certification Date:July 20,2016 , Town of Waynesville Permit Number: WQ0013116 Version: 4.0 Class A Residuals Product Generated for Distribution Approved Monitoring Monitoring Monitoring Mineralization Maximum Frequency for Rate Owner Facility Name County Permit Biological DryTons Frequency for Frequency for Pathogen& Number Residuals Non-hazardous Metals and g [Raw=0.4; Per Year Characteristics 2 Nutrients 3>s Vector Attraction Aerobic=0.3; Reductions 4'S Anaerobic=0.2; Compost=0.1] Town of Waynesville Town of Waynesville WWTP6 Haywood NC0025321 Yes 1,065 Annually See Table Below See Table Below 0.2 Total 1,065 1. Maximum Dry Tons per Year is the amount of residuals approved for distribution from each permitted facility. 2. Analyses to demonstrate that residuals are non-hazardous(i.e.,TCLP,ignitability,reactivity,and corrosivity)as stipulated under permit Condition IV.2. 3. Testing of metals and nutrients as stipulated under permit Condition IV.3. 4. Analyses of pathogen and vector attraction reductions as stipulated under permit Condition IV.4. 5. Monitoring frequencies are based on the actual dry tons applied per year using the table below,unless specified above. IDry Tons Generated Monitoring Frequency (short tons per year) (Established in 40 CFR 503 and 15A NCAC 02T.1111) <319 I/Year =>319-<1,650 1/Quarter(4 times per year) =>1,650-<16,500 1/60 Days(6 times per year) =>16,500 I/month(12 times per year) 6. No residuals other than those generated by this residuals source generating facility shall be approved for acceptance for treatment in the residuals composting facility in accordance with this permit. If no land application events occur during a required sampling period(e.g.no land applications occur during an entire year when annual monitoring is required),then no sampling data is required during the period of inactivity.The annual report shall include an explanation for missing sampling data.Those required to submit the annual report to EPA may be required to make up the missed sampling,contact the EPA for additional information and clarification. WQ0013116 Version 4.0 Attachment A Page 1 of 1 a "1•,' \Y,.`f f-'�..4^ .Tc' ! .4,y--\ V 4/11f �'__,„ ...b.' \-J pi• . n MK:I"at, , V✓_ ,,,r..).0:•.rl1/,zu,>, ..t ��',�'w./ ''/•/`//—:�'.".:."' s�":)4,4 r Y Vw1• .�f,�, `Ta-�_ ••/._\� ,iv �`, a �,.,r^J_fil,ef/1 s • ` ! 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A. .'S"-. c A .))1a, • .f�� -��•s�;,,.,,,,.,:e., ,�: - '•. j f� /� , c ' _-' . 67 t •.,401. ,r` '00025321 - Town of Waynesville WWTP ir FIGURE 1 TOWN OF WAYNESVILLE Uuitude; 35°33'02" $ub-Basin, 04-03-05 DISTRIBUTION OF CLASS A WASTEWATER RESIDUALS Longitude: 82456'S8, County' liaywood HAYWOOD COUNTY Quad#; E7SW/Clyde,NC prearn Cfuss, C WQ0013116 IReceiving Stream; Pigeon River LOCATION OF PRODUCT GENERATING FACILITY ,Perna ned Flow, 6.0 MG) Mop not to scale NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION COUNTY OF HAYWOOD IN THE MATTER OF ) NORTH CAROLINA ) SPECIAL ORDER BY CONSENT NPDES PERMIT NC0025321 ) HELD BY ) EMC SOC WQ S 19-005 TOWN OF WAYNESVILLE ) ) Pursuant to provisions of North Carolina General Statutes(G.S.) 143-215.2 and 143-215.67,this Special Order by Consent is entered into by the Town of Waynesville,hereinafter referred to as the Town,and the North Carolina Environmental Management Commission,an agency of the State of North Carolina created by G.S. 143B-282, and hereinafter referred to as the Commission: 1. The Town and the Commission hereby stipulate the following: (a) The Town holds North Carolina NPDES permit NC0025321 for operation of the Town of Waynesville wastewater treatment plant(WWTP) and for making an outlet therefrom for the discharge of treated wastewater to the Pigeon River,currently classified C waters of this State in the French Broad River Basin. The Town is unable to consistently comply with effluent limitations for Total Suspended Solids (TSS) and fecal coliform as set forth in NPDES Permit NC0025321. Compliance will require preparation of plans and specifications for construction and operation of an upgraded WWTP and continued reduction of inflow and infiltration(I&I) within the collection system. (b) Noncompliance with final effluent limits constitutes causing and contributing to pollution of the waters of this State named above,and the Town is within the jurisdiction of the Commission as set forth in G.S. Chapter 143,Article 21. (c) The Town has secured funding for the planning, design and construction of improvements to the current WWTP,which includes upgrade of the headworks,removal of primary clarifiers and replacement with primary drum filters,rehabilitation of the current aeration basins, installation of two new circular secondary clarifiers, improvements in solids management, conversion of the anaerobic digester to an aerated sludge holding tank and conversion from gas to liquid disinfection. Completion of the project will provide the Town with the ability to adequately treat incoming wastewater,properly manage solids and aid the facility in returning to compliance with NPDES Permit No.NC0025321. (d) Since this Special Order is by Consent, neither party will file a petition for a contested case or for judicial review concerning its terms. 2. The Town,desiring to comply with the permit identified in paragraph 1(a)above,hereby agrees to do the following: (a) The Town has outstanding civil penalty assessments for NPDES permit NC0025321 that total $20,645.48.The Town has violations that have not been assessed by the Division to-date that approximate$22,500.As settlement of all violations,including those assessed and pending,the SOC WQ S19-005 Town agrees to pay an upfront penalty of$4,129.00, with the remaining amount of$16,516.48 to be held in abeyance until the successful completion of this SOC. Upon the succ essful completion of this SOC, the remainingpenaltyamount held in abeyance ($16,516.48 assessed) p will be remitted in full and the assessment of pending violations waived. Should the Special Order of Consent not reach successful conclusion,the full remaining assessed penalty of $16,516.48 will be due immediately by check payable to the North Carolina Department of Environmental Quality and forwarded to the Director. The Division retains the right to address those violations not assessed approximating $22,500 if the SOC is not successfully completed. (b) Undertake the following activities in accordance with the indicated time schedule: (1) Within 60 days,following the issuance of the SOC, submit an update on current I&I reduction efforts and a copy of the Town's current collection system CIP. (2) On or before April 15,2021,submit approvable plans for an Authorization to Construct. (3) On or before November 1,2020,submit and/or make available online the flow measurements obtained from the meter installed downstream of the intermediate pump station. (4) Four(4) months following issuance of the AtoC, advertise project, receive bids&receive authority to award for the construction of plant improvements (5) Three (3) months following receipt of authority to award the construction contract, begin construction of the plant improvements as outlined in the AtoC. (6) Twenty-four(24) months after beginning construction, complete construction of the Waynesville WWTP improvements. (7) Three(3) months following completion of construction, achieve compliance with the NPDES Permit NC0025321. (8) Provide quarterly progress reports summarizing activities undertaken by the Town regarding the construction of the WWTP. Reports will also provide a summary of the performance of the Town's existing WWTP during the previous quarter, and detail efforts made to optimize the WWTP during that time. (9) Provide semi-annual progress reports on the Town's concurrent efforts to address and remove significant sources of 1&1. Additionally,updated copies of the Town's CS CIP shall be submitted as they become available. Reports may be provided by hard copy or electronic means and shall be received by the NC DEQ Asheville Regional Office and the DWR Central Office no later than the 10th day following the end of the quarter during the period of time the Order is in effect. (c) During the time in which this Special Order by Consent is effective, comply with the interim Page 2 of 5 SOC WQ S 19-005 effluent limitations contained in Attachment A. Under this Special Order of Consent, only the parameters listed below have been modified from the most current NPDES Permit in effect. The following reflects only the limitations that have been modified from NPDES requirements by this Order: Current Permit Limits Modified Limits(SOC) Parameter Units Monthly Average Weekly Average Monthly Average Weekly Average Total Suspended mg/L 30 45 45 100 Solids(TSS) Fecal Coliform mg/L 200 400 200 600 (d) No later than thirty(30)calendar days after any date identified for accomplishment of any activity listed in paragraph 2. (b)(1)—(7) above,submit to the Director of DWR a written notice of compliance (including the date compliance was achieved along with supporting documentation if applicable)or noncompliance therewith. In the case of noncompliance,the notice shall include a statement of the reason(s)for noncompliance,remedial action(s)taken, and a statement identifying the extent to which subsequent dates or times for accomplishment of listed activities may be affected. 3. The Town agrees that unless excused under paragraph four(4),the Town will pay the Director of DWR, by check payable to the North Carolina Department of Environmental Quality, stipulated penalties according to the following schedule for failure to meet the deadlines set out in paragraph 2. - j SOC Violation Stipulated Penalty Failure to meet a schedule date listed in paragraphs $1000 per missed schedule date within the first 2.(b)(1)through 2.(b)(6). seven(7)days of tardiness;$750 per day thereafter._ Failure to submit progress reports as required by $1000 for the first violation; penalty doubles with paragraph 2,(b)(7&8). each subsequent assessment for late reports. Failure to maintain compliance with any modified limit $1000 for exceeding monthly average limit;$500 for contained in the SOC. exceeding weekly average limits., Monitoring frequency violations for modified parameters $100.00 per omitted value per parameter 4. The Town and the Commission agree that the stipulated penalties are not due if the Town satisfies DWR that noncompliance was caused solely by: (a) An act of God; (b) An act of war; (c) An intentional act or omission of a third party, but this defense shall not be available if the act or omission is that of an employee or agent of the defendant or if the act or omission occurs in connection with a contractual relationship with the permittee; (d) An extraordinary event beyond the permittee's control. Contractor delays or failure to obtain Page 3 of 5 SOC WQ S 19-005 funding will not be considered as events beyond the permittee's control;or (e) Any combination of the above causes. Failure within thirty(30)days of receipt of written demand to pay the penalties,or challenge them by a contested case petition pursuant to G.S. 150B-23,will be grounds for a collection action,which the Attorney General is hereby authorized to initiate. The only issue in such an action will be whether the thirty(30)days has elapsed. 5. This Special Order by Consent and any terms and/or conditions contained herein,hereby supersede any and all previous Special Orders,Enforcement Compliance Schedule Letters,terms,conditions, and limits contained therein issued in connection with NPDES permit NC0025321. 6. Failure to meet the schedule dates identified in section 2 may terminate this Special Order by Consent and require the Town to comply with the terms and conditions contained in permit NC0025321. 7. Noncompliance with the terms of this Special Order by Consent is subject to enforcement action in addition to the above stipulated penalties, including injunctive relief pursuant to G.S. 143-215.6.C. 8. In accordance with the provisions of G.S. 143-215.67(b)the Commission allows the Town of Waynesville to accept the additional waste specified below to its waste disposal system.The approval of additional flow will be in the form of an issued sewer extension permit. Project Gallons per Day Total Projected Nevi Flow OieeTeiifl oI``S 155,000 :i to.Provide'Minimum.: opable Service ..w._, Total 155,000 8. The permittee,unon signature of this Special Order by Consent,will be expected to comply • with all schedule dates,terms,and conditions of this document. 9. This Special Order by Consent shall expire July 1,2024. • Page 4 of 5 SOC WQ S 19-005 For the Town of Waynesville: ob Hites Date Town Manager For the North Carolina Environmental Management Commission 12/31/2020 Date Director,Division of Water Resources 1 1 Page 5 of 5 DESIGN CALCULATIONS TOWN OF WAYNESVILLE SLUDGE STORAGE TANK IMPROVEMENTS HAYWOOD COUNTY, NORTH CAROLINA kA mcgill Shaping Communities Together 55 Broad Street Asheville NC, 28801 828-252-0575 0AR Firm License No.: C-0459 S*").00ESS/0 14::r% 050993 U?ZZ' JULY 2021 �'�'GINO- ��''ON 9 HE4��•�. PROJECT NO. 19.00305 TABLE OF CONTENTS 1. SLUDGE HOLDING TANK DESIGN Town of Waynesville Page 2 Design Calculations Aerated Sludge Holding Tank Conversion July 2021 SECTION 1 HOLDING TANK DESIGN Sludge Holding Tank Volume design solids concentration 3.00% 1475• tank diameter 60 ft • top of footing 2511.16 ft aon, top of wall 2537.66 • high water level 2534.50 ft a cone pitch (rise over run) 0.17 ft/ft 3 height of cylinder 23.34 ft lc height of cone 5 ft v 70,705 ft3 volume ea 528,871 gal sludge storage capacity* 6.9 days * Liquid sludge storage capacity does not meet the 30 days minimum. The covered sludge storage shed can store approximately 3 months of dewatered cake. Sludge Handling Aeration Requirements Sludge Holding Tank Description Units NOTES Number 1 Effective Volume 528,871 gal Effective Volume 70,705 ft3 Mixing Requirements 30 scfm/1000ft3 Ten States Standards Blower Size 2121 scfm 23.3 ft Side Water Depth 10.10 psi Pipe Headloss+Diffuser Headloss 2.3 psi Headloss+ Filter Headloss+Safety Factor 0.8+1+0.25+0.25=2.3 psi Blower Discharge Pressure 12.4 psi Blower Efficiency 60% Estimated Blower Horsepower 191 horsepower Selected Blower Horsepower 200 horsepower Town of Waynesville Page 3 Design Calculations Aerated Sludge Holding Tank Conversion July 2021 s Residuals Management Plan Town of Waynesville Wastewater Treatment Plant The project generally includes improvements to the Town of Waynesville's Wastewater Treatment Plant (WWTP), which has a capacity of 6 million gallons per day (MGD). The existing sludge processes include two primary sludge pumps, two waste sludge pumps, a primary sludge gravity thickener, a secondary sludge gravity thickener, aerobic sludge holding tank, multiple sludge transfer pumps, a belt filter press, RDP Class A lime stabilization system, and a sludge loading station. Although the Town of Waynesville has a permit WA0013116 for distribution of Class A residuals,the Town currently hauls biosolids to White Oaks Landfill in Haywood County until the Town is able to identify new clients to accept the Class A sludge. Trash, Sediment and Grit The Waynesville WWTP process design includes fine(primary treatment facility) screens for the removal of trash and sediment from the liquid treatment trains. The primary treatment facility also includes a grit removal system composed of a grit concentrator and grit washing/classification unit. These preliminary treatment facilities are designed with screenings collection capabilities for short-term storage,prior to being transported to an offsite landfill facility. Estimated Residuals Production Rates The estimated residuals production rates for the facility are as shown in Table 1. Table 1 Residuals Production Rates Average Annual Maximum Month Primary Sludge Production Rate, lbs./day 5,858 7,323 Typical Primary Sludge Concentration, % 1% 1% Typical Primary Sludge Volume, gpd 69,962 87,453 WAS Production Rate, lbs./day 6,911 8,639 Typical WAS Concentration,% 0.8% 0.8% Typical WAS Volume, gpd 103,381 129,226 Combined Sludge Production Rates, lbs/day 12,770 15,962 Typical Combined Sludge Concentration, % 0.88% _ 0.88% Typical Combined Sludge Volume,gpd 173,343 216,679 _ Page 1 of 3 Residuals Handling Facilities The proposed project will include a new primary sludge pump station, a new waste sludge pump station,new thickening mechanism in gravity sludge thickeners, and a new belt filter press. Primary and Wasted Activated Sludge Pumping New primary sludge pumps will transfer primary sludge generated from primary disc filters to the primary sludge thickener for thickening. New WAS pumps will pump WAS from the new RAS/WAS pump station to the secondary sludge thickener for thickening. Sludge Thickening There is a 22-ft in diameter primary sludge thickener and a 28-ft in diameter WAS sludge thickener to provide gravity thickening. Mechanical components will be replaced in both thickeners upon the completion of the project.At an expected feed solid of 2%,the underflows from both thickeners will be pumped to the aerated sludge holding tank for storage prior to further treatment. Sludge Holding Tank The combined sludge is stored in a 60-ft diameter x 25-ft side water depth holding tank with an approximate volumetric capacity of 527,000 gallons.Aeration and mixing are provided in this tank by a surface aerator. Underflow from this tank is routed to a sludge handling building where the sludge can be fully dewatered and(1)routed to the landfill site;(2)or treated to achieve a Class A product by the RDP process for land application once new clients are identified. Dewatering The sludge handling building is equipped a new 2-meter belt filter press (BFP). The BFP is designed for 150 gallons per minute(hydraulic loading limit)and 2,000 dry pounds per hour(solids loading limit). Estimated dewatering unit system capacity utilization at the design flow rate is summarized in Table 2 with the unit operating in dewatering mode. Table 2 Residuals Production Rates Average Annual Maximum Month Sludge Production Rate, lbs./day 12,770 15,962 Typical Combined Sludge Concentration,% 2.66% 2.66% Typical Combined Sludge Volume,gpd 57,563 71,954 Runtime(HLR limited),hours/day, 6.4 8 Runtime(SLR limited),hours/day 6.4 8 Dewatering Unit Capacity Utilization 26.7% 33.3% Page 2 of 3 Sludge Storage There is a covered sludge storage shed, which can provide approximate 3 months of storage for dewatered sludge at the design capacity of 6 MGD. Page 3 of 3 REGEI-VED NZ)EQ/DWIT/NP TECHNICAL SPECIFICATIONS SLUDGE STORAGE TANK IMPROVEMENTS WAYNESVILLE WWTP TOWN OF WAYNESVILLE HAYWOOD COUNTY, NORTH CAROLINA J FINAL SPECIFICATIONS - FOR REVIEW PURPOSES ONLY NOT RELEASED FOR CONSTRUCTION 111 Shaping Communities Together RECEIVED JUL 2 9 2021 NCDEQ/DWRINPDES TECHNICAL SPECIFICATIONS SLUDGE STORAGE TANK IMPROVEMENTS WAYNESVILLE WWTP TOWN OF WAYNESVILLE HAYWOOD COUNTY, NORTH CAROLINA y A., Civil/Process Design Electrical Design me .\\\ eAR. .....0`,A. •, ..... • q. ; ..„.ss,„,.., ....... %' = _ : SEAL • 55 Broad Street 050993 = 040817 Asheville, North Carolina 28801 ,y��, ���`' ��••.Fac1N �:�� ��� Firm License No.: C 0459 %,,pN Q���•,� '�.,N/E•••� .... ., B. HE �� 9 L L �� • �?lri��iiii,ii��»o� ///JJJ11111 10-.1 Daniel L. Giiffee"'fled Dan'''. Griffee J U LY 2021 Griffee ate: 021.07.2209:15:37 -04'0Nelson Heringer, PE Daniel L. Griffee, PE PROJECT NO. 19.00305 McGill Associates, P.A. McGill Associates, P.A. TOWN OF WAYNESVILLE SLUDGE STORAGE TANK IMPROVEMENTS TABLE OF CONTENTS DIVISION 03 - CONCRETE 033000 CAST IN PLACE CONCRETE DIVISION 09 - FINISHES 099000 PAINTING DIVISION 26 - ELECTRICAL 260519 LOW-VOLTAGE ELECTRICAL POWER CONDUCTORS AND CABLES 260523 CONTROL-VOLTAGE ELECTRICAL POWER CABLES 260526 GROUNDING AND BONDING FOR ELECTRICAL SYSTEMS 260529 HANGERS AND SUPPORTS FOR ELECTRICAL SYSTEMS 260533 RACEWAYS AND BOXES FOR ELECTRICAL SYSTEMS 262213 LOW-VOLTAGE DISTRIBUTION TRANSFORMERS 262416 PANELBOARDS 262816 ENCLOSED SWITCHES AND CIRCUIT BREAKERS DIVISION 31 - EARTHWORK 312300 EXCAVATION AND BACKFILL DIVISION 32 - EXTERIOR IMPROVEMENTS 320117 BITUMINOUS PAVEMENT REPAIRS 322905 RESTORATION OF SURFACES 329200 TURF AND GRASSES DIVISION 33 - UTILITIES 330505 PRESSURE TESTING OF PIPING DIVISION 40 - PROCESS INTERCONNECTIONS 400500 PIPING GENERAL 400507 HANGERS AND SUPPORTS 400551 VALVES 401223 AERATION PIPING AND APPURTENANCES JULY 2021 TOC-1 PROJECT # 19.00305 TOWN OF WAYNESVILLE SLUDGE STORAGE TANK IMPROVEMENTS DIVISION 43 - PROCESS GAS AND LIQUID HANDLING EQUIPMENT 431133 ROTARY LOBE COMPRESSORS DIVISION 46 - WATER AND WASTEWATER EQUIPMENT 465131 FLEXIBLE MEMBRANCE TUBE DIFFUSERS JULY 2021 TOC-2 PROJECT # 19.00305 SECTION 033000 CAST-IN-PLACE CONCRETE PART 1 - GENERAL 1.1 RELATED DOCUMENTS A. Drawings and general provisions of the Contract, including General and Supplementary Conditions and Division 01 Specification Sections, apply to this Section. 1.2 SUMMARY A. This section includes cast in place concrete as shown on Drawings, and as specified herein. In general, this work includes cast in place concrete consisting of Portland Cement, fine and course aggregate, selected admixtures, mixing, transporting, placing, finishing, and curing as herein specified. This section further includes fabrication and placement of concrete reinforcement, providing formwork and shoring for this work as well as related items of quality control, testing, and evaluation of concrete strength. B. Related Sections: 1. Division 31 Section "Earth Moving" for drainage fill under slabs-on-grade. 2. Division 32 Section "Concrete Paving" for concrete pavement and walks. 1.3 REFERENCES A. Some products and execution are specified in this section by reference to published specifications or standards of the following with respect abbreviations used. 1. American Concrete Institute: ACI 2. The American Society for Testing and Materials: ASTM 3. American Welding Society AWS 4. U. S. Products Standards PS B. Standard References: The current edition of the following standard references shall apply to the work of this Section except as indicated otherwise on the Drawings or herein. 1 . Publications of the American Concrete Institute: a. ACI 211.1 Standard Practice for Selecting Proportions for Normal, Heavyweight and Mass Concrete July 2021 Project# 19.00305 033000-Page 1 b. ACI 211.2 Standard Practice for Selecting Proportions for Structural Lightweight Concrete c. ACI 212 Chemical Admixtures for Concrete d. ACI 214 Guide to Evaluation of Strength Test Results of Concrete e. ACI 301 Specifications for Structural Concrete. f. ACI 304 Guide for Use of Volumetric-Measuring and Continuous- Mixing Concrete Equipment g. ACI 305 Guide to Hot Weather Concreting h. ACI 306 Guide to Cold Weather Concreting i. ACI 308 Specification for Curing Concrete j. ACI 309 Guide for Consolidation of Concrete k. ACI 311 ACI Manual of Concrete Inspection I. ACI 315 Details and Detailing of Concrete Reinforcement. m. ACI 318 Building Code Requirements for Structural Concrete. n. ACI 347 Guide to Formwork for Concrete. 2. Publications of the American Welding Society: a. AWS D1.4 Structural Welding Code-Reinforcing Steel 3. Publications of the Concrete Reinforcing Steel Institute: a. Manual of Standard Practice 4. Publications of the American Society for Testing and Materials: a. ASTM A 82 Standard Specification for Steel Wire, Plain, for Concrete Reinforcement. b. ASTM A 185 Standard Specification for Steel Welded Wire Reinforcement, Plain, for Concrete. c. ASTM A 615 Standard Specification for Deformed and Plain Carbon- Steel Bars for Concrete Reinforcement. d. ASTM A 996 Standard Specification for Rail-Steel and Axle-Steel Deformed Bars for Concrete Reinforcement. 1.4 DEFINITIONS A. Cementitious Materials: Portland cement alone or in combination with one or more of the following: blended hydraulic cement, fly ash and other pozzolans, ground granulated blast-furnace slag, and silica fume; subject to compliance with requirements. 1.5 SUBMITTALS A. Product Data: For each type of product indicated. July 2021 Project# 19.00305 033000 -Page 2 B. Design Mixtures: For each concrete mixture. Submit alternate design mixtures when characteristics of materials, Project conditions, weather, test results, or other circumstances warrant adjustments. 1. Indicate amounts of mixing water to be withheld for later addition at Project site. C. Steel Reinforcement Shop Drawings: Placing drawings that detail fabrication, bending, and placement. Include bar sizes, lengths, material, grade, bar schedules, stirrup spacing, bent bar diagrams, bar arrangement, splices and laps, mechanical connections, tie spacing, hoop spacing, and supports for concrete reinforcement. D. Formwork Shop Drawings: Prepared by or under the supervision of a qualified professional engineer detailing fabrication, assembly, and support of formwork. 1. Shoring and Reshoring: Indicate proposed schedule and sequence of stripping formwork, shoring removal, and reshoring installation and removal. E. Construction Joint Layout: Indicate proposed construction joints required to construct the structure. 1. Location of construction joints is subject to approval of the Engineer. F. Samples: For waterstops and/or vapor retarder. G. Qualification Data: For Installer and Manufacturer. H. Welding certificates. I. Material Certificates: For each of the following, signed by manufacturers: 1. Cementitious materials. 2. Admixtures. 3. Form materials and form-release agents. 4. Steel reinforcement and accessories. 5. Fiber reinforcement. 6. Waterstops. 7. Curing compounds. 8. Floor and slab treatments. 9. Bonding agents. 10. Adhesives. 11 . Vapor retarders. 12. Semirigid joint filler. 13. Joint-filler strips. 14. Repair materials. July 2021 Project# 19.00305 033000—Page 3 J. Contractor shall submit records of all concrete pours showing exact location of pour, date of pour, quantity of pour, and class of concrete poured to the Engineer each month. Temperature at time of pour should also be recorded. K. Contractor shall also submit to the Engineer chemical and physical analysis of all cement and fly ash delivered to the batch plant seven (7) days prior to use of the cement or fly ash. 1.6 QUALITY ASSURANCE A. Installer Qualifications: A qualified installer who employs on Project personnel qualified as ACI-certified Flatwork Technician and Finisher and a supervisor who is an ACI-certified Concrete Flatwork Technician. B. Manufacturer Qualifications: A firm experienced in manufacturing ready-mixed concrete products and that complies with ASTM C 94 requirements for production facilities and equipment. 1 . Manufacturer certified according to NRMCA's "Certification of Ready Mixed Concrete Production Facilities." C. Source Limitations: Obtain each type or class of cementitious material of the same brand from the same manufacturer's plant, obtain aggregate from single source, and obtain admixtures from single source from single manufacturer. D. Welding Qualifications: Qualify procedures and personnel according to AWS D1 .4, "Structural Welding Code - Reinforcing Steel." E. ACI Publications: Comply with the following applicable standards unless modified by requirements in the Contract Documents: 1. ACI 301 , "Specifications for Structural Concrete" "SpecificationsConcrete 2. ACI 117, for Tolerances for Co c ete Construction and Materials." F. Concrete Testing Service: Owner shall engage a qualified independent testing agency to perform material evaluation tests and to design concrete mixtures. G. If the average strength of the laboratory control cylinders shows the concrete to be below the specified design strength, the aggregate proportions and water content may be changed by the Engineer, who, in addition to such changes, may require core tests. Tests confirming concrete strengths on hardened concrete which was poured without testing shall be paid for by the Contractor. H. Prepare design mixes for each class of concrete used in accordance with ACI 311.1 . The Contractor shall pay for all design mix costs. Submit written reports to the Engineer for each proposed mix for each class of concrete prior to start of July 2021 Project# 19.00305 033000-Page 4 work. Do not begin concrete production until mixes have been approved by the Engineer. I. Strength data for establishing standard deviation and required overstrength factor will be considered suitable if the concrete production facility has certified records consisting of at least 30 consecutive tests in one group or the statistical average for two groups totaling 30 or more tests representing similar materials and project conditions. Records of these tests shall be submitted with the proposed design mix. J. If standard deviation exceeds 800 psi or if no suitable records are available, selected proportions to produce an average strength of at least 1200 psi greater than the required compressive strength of concrete. If standard deviations are less than 600 psi, the minimum overstrength factor required in the design mix shall be in accordance with ACI 318, Section 4.3.1. K. Design mixes shall be proportioned using the maximum specified slump and temperature. Laboratory test date for revised mix designs and strength results must be submitted to and accepted by the Engineer before using in the work. Admixtures shall be used in strict accordance with the manufacturer's written instructions. Design mix shall be proportioned using the proposed admixtures at optimum recommended dosages. The manufacturer of the mixture shall prepare and submit test date used to determine the optimum dosage. 1.7 DELIVERY, STORAGE, AND HANDLING A. Reinforcing Steel shall be delivered to the Project Site properly tagged, bundled, and ready to place. Reinforcing steel delivered to the Project Site, and not immediately placed in forms, shall be protected from mud, excessive rust producing conditions, oil, grease, or distortion. Reinforcing steel shall be stored off the ground. B. Waterstops: Store waterstops under cover to protect from moisture, sunlight, dirt, oil, and other contaminants. PART 2 - PRODUCTS 2.1 FORM-FACING MATERIALS A. Smooth-Formed Finished Concrete: Form-facing panels that will provide continuous, true, and smooth concrete surfaces. Furnish in largest practicable sizes to minimize number of joints. 1. Plywood, metal, or other approved panel materials shall be high quality and standard for the industry. July 2021 Project#19.00305 033000-Page 5 B. Rough-Formed Finished Concrete: Plywood, lumber, metal, or another approved material. Provide lumber dressed on at least two edges and one side for tight fit. C. Forms for Cylindrical Columns, Pedestals, and Supports: Metal, glass-fiber- reinforced plastic, paper, or fiber tubes that will produce surfaces with gradual or abrupt irregularities not exceeding specified formwork surface class. Provide units with sufficient wall thickness to resist plastic concrete loads without detrimental deformation. D. Pan-Type Forms: Glass-fiber-reinforced plastic or formed steel, stiffened to resist plastic concrete loads without detrimental deformation. E. Void Forms: Biodegradable paper surface, treated for moisture resistance, structurally sufficient to support weight of plastic concrete and other superimposed loads. F. Chamfer Strips: Wood, metal, PVC, or rubber strips, 3/4 by 3/4 inch, minimum. G. Rustication Strips: Wood, metal, PVC, or rubber strips, kerfed for ease of form removal. H. Form-Release Agent: Commercially formulated form-release agent that will not bond with, stain, or adversely affect concrete surfaces and will not impair subsequent treatments of concrete surfaces. 1. Formulate form-release agent with rust inhibitor for steel form-facing materials. I. Form Ties: Factory-fabricated, removable or snap-off metal or glass-fiber- reinforced plastic form ties designed to resist lateral pressure of fresh concrete on forms and to prevent spalling of concrete on removal. 1. Furnish units that will leave no corrodible metal closer than 1 inch to the plane of exposed concrete surface. 2. Furnish ties that, when removed, will leave holes no larger than 1 inch in diameter in concrete surface. 3. Furnish ties with integral water-barrier plates to walls indicated to receive dampproofing or waterproofing. 2.2 STEEL REINFORCEMENT A. Unless otherwise indicated, all reinforcing steel shall conform to one of the following ASTM Standards, latest edition: 1. ASTM A 615, Grade 60. 2. ASTM A 996, Grade 60. July 2021 Project#19.00305 033000—Page 6 1 B. Epoxy-Coated Reinforcing Bars: Where indicated steel reinforcement shall be epoxy coated, with less than 2 percent damaged coating in each 12-inch bar length. C. Steel Bar Mats: ASTM A 184, fabricated from ASTM A 615, Grade 60, deformed bars, assembled with clips. D. Plain-Steel Wire: ASTM A 82. E. Deformed-Steel Wire: ASTM A 496. F. Epoxy-Coated Wire: ASTM A 884, Class A, Type 1, with less than 2 percent damaged coating in each 12-inch wire length. G. Plain-Steel Welded Wire Reinforcement: ASTM A 185, plain, fabricated from steel wire into flat sheets. H. Deformed-Steel Welded Wire Reinforcement: ASTM A 497, flat sheet. I. Epoxy-Coated Welded Wire Reinforcement: ASTM A 884, Class A coated, Type 1, steel. 2.3 REINFORCEMENT ACCESSORIES A. Joint Dowel Bars: ASTM A 615, Grade 60, plain-steel bars, cut true to length with ends square and free of burrs. B. Epoxy-Coated Joint Dowel Bars: ASTM A 615, Grade 60, plain-steel bars, ASTM A 775 epoxy coated. C. Epoxy Repair Coating: Liquid, two-part, epoxy repair coating; compatible with epoxy coating on reinforcement and complying with ASTM A 775. D. Bar Supports: Bolsters, chairs, spacers, and other devices for spacing, supporting, and fastening reinforcing bars and welded wire reinforcement in place. Manufacture bar supports from stainless steel wire, plastic, or precast concrete according to CRSI's "Manual of Standard Practice," of greater compressive strength than concrete and as follows: 1. For concrete surfaces exposed to view where legs of wire bar supports contact forms, use CRSI Class 1 plastic-protected steel wire or CRSI Class 2 stainless-steel bar supports. 2. For epoxy-coated reinforcement, use epoxy-coated or other dielectric- polymer-coated wire bar supports. July 2021 Project# 19.00305 033000-Page 7 2.4 CONCRETE MATERIALS A. Cementitious Material: Use the following cementitious materials, of the same type, brand, and source, throughout Project: 1. Portland Cement shall be fresh stock of an approved standard brand meeting the requirements of ASTM C 150, of Type II, white. Only one brand of cement shall be used except when otherwise approved by the Engineer, and the Contractor shall inform the Engineer of the brand name of the cement proposed for use. The Contractor shall submit a copy of mill test reports on all cement delivered to the job 7 days prior to use of the cement. Cube strength from mill tests shall have a tolerance of ±600 psi. The fineness of cement used shall not have more than 10 percent retained on a no. 325 mesh screen when tested in accordance with ASTM C 430. 2. Fly Ash shall have a high fineness and low carbon content and shall exceed the requirements of ASTM C 618, Class 7, except that the loss of ignition shall be less than 3 percent, and all fly ash shall be a classified processed material. Fly ash shall be obtained from one source for the concrete delivered to the project. Complete chemical and physical analysis of each carload of fly ash shall be submitted to the Engineer ten (10) days prior to use of each carload delivered. Concrete mixes proportioned with fly ash shall contain not less than 10 percent nor more than 20 percent by weight of cement of fly ash. B. Concrete Aqqreqates: Unless otherwise specified all aggregate shall be normal weight aggregate in accordance with ASTM C 33. 1. Aggregate for concrete shall consist of clean crushed stone or gravel having hard, strong, uncoated particles free from injurious amounts of soft, thin, elongated or laminated pieces, alkali, organic or other deleterious matter. Maximum aggregate size shall be 3/-inch. The maximum permissible percentage of elongated particles shall not exceed 5 percent by weight. Elongated particles are those defined as having a length equal to or greater than 5 times the width. Samples of coarse aggregate shall be submitted to the testing laboratory for testing and approval prior to use. The fineness modulus of the coarse aggregate shall not vary for more than ±0.3 percent. 2. Where lightweight aggregate is specified, provide aggregate in accordance with ASTM C 330. 3. Provide aggregates from a single source. C. Fine Aggregate shall consist of sand, stone screening, or other inert materials with similar characteristics having clean, strong, durable, uncoated grains and free from lumps, soft or flaky particles, clay, shale, alkali, organic matter or other deleterious substances with reactivity to alkali in cement. Fine aggregate shall be submitted for testing and approval to the testing laboratory. The July 2021 Project#19.00305 033000-Page 8 laboratory shall verify that fine aggregate conforms to ASTM standards by making standard colormetric, sediment, and comparative tensile tests, and by sieve analysis. The fineness modules of the sand shall not vary by more than ±0.2 percent. Color shall be standard as determined from colormetric tests. D. Water shall be potable water in accordance with ASTM C 94. 2.5 ADMIXTURES A. When required or permitted, admixtures shall conform to the appropriate specification indicated. Do not use admixtures which have not been incorporated and tested in the accepted mixes unless otherwise authorized in writing by the Engineer. 1. Air-Entraining Admixture shall be in accordance with ASTM C 260. a. Air-entraining admixtures shall be used for all concrete exposed to freezing and thawing or subjected to hydraulic pressure. Entrained air shall conform to the air control limits of Table 3.4.1 of ACI 301 . The water-cement ratio for all air-entrained concrete exposed to freezing and thawing shall not exceed 0.53. B. Chemical Admixtures: Provide admixtures certified by manufacturer to be compatible with other admixtures and that will not contribute water-soluble chloride ions exceeding those permitted in hardened concrete. Do not use calcium chloride or admixtures containing calcium chloride. 1 . Water-Reducing Admixtures shall be hydroxolated polymer type in accordance with ASTM C 494, Type A. 2. Retarding Admixture: ASTM C 494, Type B. 3. Water-Reducing and Retarding Admixture: ASTM C 494, Type D. 4. High-Range, Water-Reducing Admixture: ASTM C 494, Type F. 5. High-Range, Water-Reducing and Retarding Admixture: ASTM C 494, Type G. 6. Plasticizing and Retarding Admixture: ASTM C 1017, Type II. 2.6 WATERSTOPS A. Flexible PVC Waterstops shall be in accordance with CE CRD-C 572 for embedding in concrete to prevent passage of fluids through joints with factory- fabricate corners, intersections, and directional changes. 1. Manufacturers: Provide products by one of the following: a. W. R. Meadows. b. Greenstreak. c. Vinylex Corp. July 2021 Project# 19.00305 033000-Page 9 2. Profile: Flat, dumbbell with center bulb 3. Dimensions: 6 inches by 3/8 inch thick; nontapered. B. Self-Expanding Butyl Strip Waterstops: Manufactured rectangular or trapezoidal strip, butyl rubber with sodium bentonite or other hydrophilic polymers, for adhesive bonding to concrete, 3/4 by 1 inch. C. Self-Expanding Rubber Strip Waterstops: Manufactured rectangular or trapezoidal strip, bentonite-free hydrophilic polymer modified chloroprene rubber, for adhesive bonding to concrete, 3/8 by 3/4 inch. 2.7 VAPOR RETARDERS A. Sheet Vapor Barrier shall be minimum 10 mil polyethylene film that complies with ASTM C171 and meets or exceeds test for water retention, ASTM C 156. 2.8 CRUSHED STONE FILL A. Crushed Stone Fill shall be uniform 1-inch stone, no fines, in conformance to ASTM C 33. 2.9 CURING MATERIALS A. Liquid curing material for concrete shall exceed the requirements of ASTM C 309, Type I. Products acceptable shall provide water retention not exceeding a loss of 0.020 grams per sq. cm. when tested at a coverage of 200 sq. ft. per gallon and tested in accordance with ASTM C 156. Submit test data verifying these requirements for approval. B. Burlap shall be free of sizing or any substance that is injurious to cement or can cause discoloration. Burlap shall be rinsed in water prior to use. Burlap shall be sufficient thickness to retain water without requiring wetting. C. Water: Potable. 2.10 RELATED MATERIALS A. Pre-molded Expansion- and Isolation-Joint-Filler Strips shall be asphalt- saturated cellulosic fiber or in accordance with ASTM D 1751. B. Joint Sealing Compound shall be a two-part mineral filled epoxy polyurethane, and shall be used for all exposed joints in exterior paving slabs, sidewalks, where concrete slabs abut concrete walls, and in exposed joints in slabs on grade. July 2021 Project# 19.00305 033000—Page 10 C. Surface Coating for all exposed concrete except where otherwise shown shall be "Thoroseal" as manufactured by the Standard Dry Wall Co., or an approved equal. D. Steel for Embedded Angles and Plate Cast in Concrete shall conform to ASTM A 36. Plates and angles shall receive a commercial sand blast and be painted with an inorganic zinc base paint equal to Carbomastic #11 , or an approved equal. 2.11 REPAIR MATERIALS A. Repair Underlayment: Cement-based, polymer-modified, self-leveling product that can be applied in thicknesses from 1/8 inch and that can be feathered at edges to match adjacent floor elevations. 1. Cement Binder: ASTM C 150, portland cement or hydraulic or blended hydraulic cement as defined in ASTM C 219. 2. Primer: Product of underlayment manufacturer recommended for substrate, conditions, and application. 3. Aggregate: Well-graded, washed gravel, 1/8 to 1/4 inch or coarse sand as recommended by underlayment manufacturer. 4. Compressive Strength: Not less than 4100 psi at 28 days when tested according to ASTM C 109. B. Repair Overlayment: Cement-based, polymer-modified, self-leveling product that can be applied in thicknesses from 1/4 inch and that can be filled in over a scarified surface to match adjacent floor elevations. 1. Cement Binder: ASTM C 150, portland cement or hydraulic or blended hydraulic cement as defined in ASTM C 219. 2. Primer: Product of topping manufacturer recommended for substrate, conditions, and application. 3. Aggregate: Well-graded, washed gravel, 1/8 to 1/4 inch or coarse sand as recommended by topping manufacturer. 4. Compressive Strength: Not less than 5000 psi at 28 days when tested according to ASTM C 109. 2.12 CONCRETE MIXING A. Concrete shall be mixed at batch plants or it may be transit mixed as specified herein. Concrete batch plants must comply with the requirements of ASTM C 94 and ACI-304 with sufficient capacity of producing concrete of the quantity and quality as specified herein. All plant facilities are subject to inspection by the Engineer. Ready-mix concrete shall comply with requirements of ASTM C 94, and as specified herein, unless otherwise noted. During hot weather or July 2021 Project# 19.00305 033000-Page 11 under conditions contributing to rapid setting of concrete, a shorter mixing time than specified in ASTM C 94 will be required as follows: 1. When air temperatures are between 80 degrees F. and 90 degrees F., reduce the mixing and delivery time from 1-1/2 hours to 1 hour 2. When outside air temperatures are above 90 degrees F, reduce the mixing and delivery time from 1-1/2 hours to 45 minutes. B. Addition of water at the site for concrete mix with insufficient slumps, slumps less than the maximum specified herein, will not be permitted. Concrete delivered to the project with slump less than the minimum or greater than the maximum specified shall be rejected and discarded off site. C. Batch tickets for each load of concrete shall be submitted to the Engineer. The following information shall be provided on each batch ticket: 1. Design mix designation 2. Exact time cement, water and aggregate were discharged into the mix 3. Compressive strength of mix 4. Amount of water added to the mix D. Maintain equipment in proper operating condition, with drums cleaned before charging of each batch. Schedule delivery of trucks in order to prevent delay of placing after mixing. E. Slump: All concrete shall be proportioned and produced to have a maximum slump of 4 inches and a minimum slump of 2 inches. A tolerance of up to, but not exceeding, 1 inch above the indicated maximum shall be allowed for individual batches in any one day's pour provided the average of the most recent ten batches within the same pour does not exceed the maximum limits. No tolerance will be permitted for individual batches when less than ten (10) batches are delivered for one day's pour. F. *Concrete Type and Strengths Location Maximum Size *28 Day Compressive Aggregate Strength Slabs on Grade 3/4" 4000 psi Walls 3/4" 4000 psi Columns 3/4" See Notes on Plan Beams, Supported 3/4" 4000 psi Slabs & Joists July 2021 Project# 19.00305 033000—Page 12 *Twenty-eight day strength shall be as determined from concrete sampled in accordance with ASTM C 172 and 4-inch diameter x 8—inch cylinders tested in accordance with ASTM C 31 and C 39. 2.13 FABRICATING REINFORCEMENT A. Fabricate steel reinforcement according to CRSI's "Manual of Standard Practice." All reinforcing steel shall be cut and shop fabricated and delivered to the project properly tagged, bundled and ready to place. PART 3 - EXECUTION 3.1 FORMWORK DESIGN A. The Contractor shall be responsible for the design of all concrete formwork. Formwork shall be designed in accordance with ACI 347 unless otherwise noted. Design, erect, support, brace and maintain formwork so that it will safely support vertical and lateral loads that might be applied until such loads can be supported by the concrete structure. Carry vertical and lateral loads to ground by formwork system and in place construction that has attained adequate strength for that purpose. Construct formwork so that concrete members and structures are of correct size, shape, alignment, elevation and position indicated, within tolerance limits of ACI 117. B. Design forms and falsework to include assumed values of live load, dead load, weight of moving equipment operated on formwork, concrete mix, height of concrete drop, vibrator frequency, ambient temperature, foundation pressure, stresses, lateral stability, and other factors pertinent to safety of structure during construction. Provide shores and struts with positive means of adjustment capable of taking up formwork settlement during concrete placing operations, using wedges or jacks or a combination thereof. Support form facing materials by structural members spaced sufficiently close to prevent deflection. Fit forms placed in successive units for continuous surfaces to accurate alignment, free from irregularities and within allowable tolerances. Provide camber in formwork as required for anticipated deflections due to weight and pressures of fresh concrete. Provide formwork sufficiently tight to prevent leakage of cement paste during concrete placement. Solidly butt joints and provide backup material at joints as required to prevent leakage and fins. C. Formwork for foundation systems may be omitted when workmanship and soil conditions permit accurate excavation and the omission is approved by the Engineer. Provide temporary openings in wall forms, column forms, and other locations necessary to permit inspection and cleanout. July 2021 Project#19.00305 033000-Page 13 D. Form accessories to be partially or wholly embedded in the concrete, such as ties and hangers, shall be a commercially manufactured type. Non-fabricated wire shall be used. Form ties shall be constructed so that the end fasteners can be removed without causing appreciable spalling at the faces of the concrete. After the ends or end fasteners of form ties have been removed, the embedded portion of the ties shall terminate not less than two diameters or twice the minimum dimensions of the tie from the formed faces of concrete to be permanently exposed to view except that in no case shall this distance be less than 3/-inches. When the formed face of the concrete is not to be permanently exposed to view, form ties may be cut off flush with the formed surfaces. E. At construction joints, contact surface of the form for sheeting for flush surfaces exposed to view shall overlap the hardened concrete in the previous placement by more than one foot. The forms shall be held against the hardened concrete to prevent offsets or loss of mortar at the construction joint and to maintain a true surface. Wood forms for wall openings shall be constructed to facilitate loosening, if necessary, to counteract swelling of the forms. Wedges used for final adjustment of the forms prior to concrete placement shall be fastened in position after the final check. Formwork shall be so anchored to shores or other supporting surfaces or members that upward or lateral movement of any parts of the formwork system during concrete placement will be prevented. Runways for moving equipment or pump lines shall be provided with struts or legs and shall be supported directly on the formwork or structural member without resting on the reinforcing steel. When mudsills are to be placed for supporting concrete forms, a reasonably level and sufficiently compacted surface will be required. Shores shall be plumb within acceptable tolerances. F. Set edge forms, bulkheads, and intermediate screed strips for slabs to achieve required elevations and slopes in finished concrete surfaces. Provide and secure units to support screed strips; use strike-off templates or compacting- type screeds. G. Provide temporary openings for cleanouts and inspection ports where interior area of formwork is inaccessible. Close openings with panels tightly fitted to forms and securely braced to prevent loss of concrete mortar. Locate temporary openings in forms at inconspicuous locations. H. Form openings, chases, offsets, sinkages, keyways, reglets, blocking, screeds, and bulkheads required in the Work. Determine sizes and locations from trades providing such items. I. Fabricate forms for easy removal without hammering or prying against concrete surfaces. Provide crush or wrecking plates where stripping may damage cast concrete surfaces. Provide top forms for inclined surfaces steeper than 1.5 horizontal to 1 vertical. 1. Install keyways, reglets, recesses, and the like, for easy removal. July 2021 Project#19.00305 033000-Page 14 2. Do not use rust-stained steel form-facing material. 3.2 FORMWORK TOLERENCES A. Unless otherwise specified by the Engineer, formwork shall be constructed so that the concrete surfaces will conform to the tolerance limits listed in Table 4.3.1 of ACI 301 . B. The Contractor shall establish and maintain in an undisturbed condition and until final completion and acceptance of the project, sufficient control points and p p bench marks to be used for reference purposes to check tolerances. 3.3 PREPARATION OF FORM SURFACES AND FORM COATINGS A. All surfaces of forms and embedded materials shall be cleaned of any accumulated mortar or grout from previous concreting and of all other foreign materials before concrete is placed in the forms. B. Retighten forms and bracing before placing concrete, as required, to prevent mortar leaks and maintain proper alignment. C. Coat form contact surfaces with form coating compound before reinforcement is placed. Provide form coating compounds that will not bond with, stain, or adversely affect concrete surfaces, and will not impair subsequent treatment of concrete surfaces requiring bond or adhesion or impede the wetting of surfaces to be cured with water or curing compounds. Do not allow excess form coating material to accumulate in the forms or to come into contact with surfaces against which fresh concrete will be placed. Apply coatings in compliance with manufacturer's instructions. 3.4 EMBEDDED ITEMS A. Place and secure anchorage devices and other embedded items required for adjoining work that is attached to or supported by cast-in-place concrete. Use setting drawings, templates, diagrams, instructions, and directions furnished with items to be embedded. 1 . Install anchor rods, accurately located, to elevations required and complying with tolerances in Section 7.5 of AISC's "Code of Standard Practice for Steel Buildings and Bridges." 2. Install reglets to receive waterproofing and to receive through-wall flashings in outer face of concrete frame at exterior walls, where flashing is shown at lintels, shelf angles, and other conditions. 3. Install dovetail anchor slots in concrete structures as indicated. July 2021 Project# 19.00305 033000- Page 15 3.5 REMOVING AND REUSING FORMS A. Formwork for columns, walls, sides of beams, and other parts not supporting the weight of the concrete may be removed as soon as the concrete has hardened sufficiently to resist damage from removal operations provided surfaces are cured and protected from cold weather as specified herein. B. Forms and shoring in the formwork used to support the weight of concrete in beams, slabs and other structural members, shall remain in place until the concrete has reached the minimum strength specified of 75 percent of the specified 28-day design strength. Strength of concrete must be verified by concrete test cylinders molded and cured in the field under the same conditions that the concrete represented by these cylinders are cured and/or maturity meters connected to thermo-couples embedded in the concrete. It shall be the responsibility of the concrete technician, employed by the Owner, to inform the General Contractor when the strength of concrete cured in the field has attained the minimum specified strength required for removal of the forms. C. Bottom forms of slabs shall not be removed in less time than is indicated below unless otherwise approved by the Engineer. Above 60 degrees F. 50 degrees F. 40 to 50 degrees F. 8 days 10 days 18 days D. When temperature is below 40 degrees F., the shores shall remain in place for an additional time equal to the lower temperature. E. When shores and other vertical supports are so arranged that the non-load- carrying form-facing material may be removed without loosening or disturbing the shores and supports, the facing material may be removed at an earlier age as specified or permitted. Wood forms for wall openings shall be loosened as soon as this can be accomplished without damage to the concrete. F. When repair of surface defects or finishing is required at an early age, forms shall be removed as soon as the concrete has hardened sufficiently to resist damage from removal operations. G. Clean and repair surfaces of forms to be reused in the Work. Split, frayed, delaminated, or otherwise damaged form-facing material will not be acceptable for exposed surfaces. Apply new form-release agent. H. When forms are reused, clean surfaces, remove fins and laitance, and tighten to close joints. Align and secure joints to avoid offsets. Do not use patched forms for exposed concrete surfaces unless approved by Engineer. July 2021 Project#19.00305 033000-Page 16 3.6 SHORES AND RESHORES A. When reshoring is permitted or required, the operations shall be planned in advance and shall be subject to approval. While reshoring is under way, no live load shall be permitted on the new construction. B. Comply with ACI 318 and ACI 301 for design, installation, and removal of shoring and reshoring. 1. Do not remove shoring or reshoring until measurement of slab tolerances is complete. C. In no case during reshoring shall concrete in beam, slabs, column or any other structural member be subjected to combined dead and construction loads in excess of the loads permitted by the Engineer for the developed concrete strength at the time of reshoring. Reshores shall be placed as soon as practicable after stripping operations are complete but in no case later than the end of the working day on which stripping occurs. D. Plan sequence of removal of shores and reshore to avoid damage to concrete. Locate and provide adequate reshoring to support construction without excessive stress or deflection. 3.7 VAPOR RETARDERS A. Sheet Vapor Retarders: Place, protect, and repair sheet vapor retarder according to ASTM E 1643 and manufacturer's written instructions. 1. Lap joints 6 inches and seal with manufacturer's recommended tape. 3.8 CRUSHED STONE FILL A. Crushed Stone Fill, 6 inches in depth, shall be placed under all concrete floors in contact with the ground. Stone shall be compacted as thoroughly as possible by tamping and rolling. 3.9 STEEL REINFORCEMENT A. General: Comply with CRSI's "Manual of Standard Practice" for placing reinforcement. B. Bars used for concrete reinforcement shall meet the following requirements for fabrication tolerance. Sheared Length +1" July 2021 Project# 19.00305 033000-Page 17 Overall Dimension of Stirrups +1/2" All Other Bends +1" C. Bars shall be placed to the following tolerances: Concrete Cover to Formed Surfaces +1/4" Top Bars in Slabs +1/4" Top Bars in Beams +1/2" Horizontal Tolerance from Vertical Surfaces +1/4" Vertical Bars in Columns +1/4" Vertical and Horizontal Bars in Walls +1/2" Lengthwise in Member +2" Wire Fabric +1/2" from center of slab or location called for on drawings D. Bars may be moved one bar diameter as necessary to avoid interference with other reinforcing steel, conduits, or embedded items. If the bars are moved more than one bar diameter, the resulting arrangement of bars shall be subject to approval. E. Minimum concrete protective covering for reinforcement except for extremely corrosive atmosphere or other severe exposures shall be as follows: p Concrete deposited Against the Ground 3" Formed Surfaces Exposed to Weather 2" or in Contact With the Ground 1-1/2" for Beams and Column Ties; 3/4" for Slabs Interior Surfaces: and Walls; Beam and Column Bars Shall be Anchored Against the Ties. F. Do not cut or puncture vapor retarder. Repair damage and reseal vapor retarder before placing concrete. G. All reinforcement, at the time concrete is placed, shall be free of mud, oil, or other materials that may adversely affect or reduce the bond. Reinforcement with rust, mill scale or tooth will be accepted as being satisfactory without cleaning or brushing provided the dimensions and weights, including heights of July 2021 Project# 19.00305 033000—Page 18 deformations, of a cleaned sample shall not be less than required by applicable ASTM Standards. H. Accurately position, support, and secure reinforcement against displacement from construction loads, the placement of concrete or other anticipated loads. Locate and support reinforcement with bar supports to maintain minimum concrete cover. Do not tack weld crossing reinforcing bars. I. The Contractor shall securely maintain the steel reinforcement accurately in place until the concrete is placed. Any and all disturbances of reinforcing from any cause whatsoever shall be fully corrected prior to placing of concrete, and all damaged bar supports and spaces shall be repaired or removed and replaced. All bars shall be extended beyond stress points the development length of the bar or be provided with an equivalent development length with a hook. J. When required or approved, welding of reinforcing steel shall conform to AWS D1 .4. No welding shall be done at the bend in a bar. Welding of cross bars (tack welding) shall not be permitted except as authorized or directed by the Engineer. K. Over formwork, metal, plastic or other approved bar chairs and spacers shall be furnished. When the concrete surface will be exposed to weather in the finished structure or where rust would impair architectural finishes, the portions of all accessories in contact with the formwork shall be stainless steel or plastic. L. Unless otherwise shown on the plans and details, the following accessories shall be provided for supports for all reinforcement: 1. Reinforced slabs-on-grade shall have plain precast concrete blocks sufficient to support bars within prescribed tolerances, or individual high chairs with runners to rest on soil. 2. Slab bars shall have continuous slab bolsters for bottom bars spaced a maximum distance of 48 inches on center, and for individual high chairs spaced 48 inches with a no.6 continuous support bar for top bars. Top bar supports shall be spaced a maximum distance apart of 48 inches and no greater than 18 inches from the overhanging ends of bars. 3. Beam bottom bars shall have beam bolsters spaced a maximum distance of 72 inches. Top beam bars may be supported from beam stirrups where permitted provided beam stirrups are fabricated sufficiently accurate to permit top bars to be placed within the tolerances permitted. Individual high chairs are required where ties or other supports are not provided. 4. Box out all slots, chases, recesses or openings as shown on the drawings and specifications and as required by the work of other trades. Box out for all temporary openings such as slots, pipe spaces, etc., and build forms to seal up when and as required. Inserts, anchors, ties, hangers, etc. shall be built into concrete as required to secure the work of the various July 2021 Project# 19.00305 033000—Page 19 subcontractors. Collars, sleeves, thimbles, anchors, sockets, etc., shall be furnished to the General Contractor by the other subcontractors for installation in the formwork. Sleeves shall not displace the reinforcing steel from its designated location by more than one bar diameter unless approved by the Engineer. The Contractor shall be responsible for the design, engineering, construction and the coordination of the placement of items affecting each trade in the formwork. M. Set wire ties with ends directed into concrete, not toward exposed concrete surfaces. N. Install welded wire reinforcement in longest practicable lengths on bar supports spaced to minimize sagging. Lap edges and ends of adjoining sheets at least 1/2 mesh plus end extension of wires but not less than 6 inches. Offset laps of adjoining sheet widths to prevent continuous laps in either direction. Lace overlaps with wire. Wire mesh shall be so placed as to positively secure its position 1/3 of the slab thickness below the top of the slab for slabs on grade. O. Splices and offsets in reinforcements at points of maximum stress shall not be made. All splices shall be approved, and shall provide sufficient lap to transfer the stress between the bars by the required development length of the bars. The character and design of each splice shall conform to the requirements of the ACI 318. Bars shall not be bent after being embedded in hardened concrete, unless otherwise noted on the drawings. Bars with kinks or bends not shown on the drawings shall not be placed. The heating of reinforcement for bending or straightening will be permitted only if the entire operation is approved by the Engineer. P. Epoxy-Coated Reinforcement: Repair cut and damaged epoxy coatings with epoxy repair coating according to ASTM D 3963. Use epoxy-coated steel wire ties to fasten epoxy-coated steel reinforcement. Q. The Engineer shall always be notified of the pouring schedule in advance and in ample time prior to placement of concrete to inspect the reinforcement. Inspection of reinforcement will be made only after each section to be poured is complete. 3.10 JOINTS A. General: Construct joints true to line with faces perpendicular to surface plane of concrete. B. Clean joint surface of laitance, coatings, loose particles, and foreign matter to expose aggregate. Prepare for bonding of fresh concrete to new concrete that has hardened; at joints between foundation systems and walls dampen, but do not saturate, the roughened and cleaned surface of set concrete immediately before placing fresh concrete. In lieu of neat cement grout, bonding grout may July 2021 Project#19.00305 033000-Page 20 be a commercial bonding agent. Apply to cleaned concrete surfaces in accordance with the printed instruction of this bonding material manufacturer. C. Construction Joints: Install so strength and appearance of concrete will be least impaired, at locations indicated or as approved by Engineer. 1. Place joints perpendicular to main reinforcement. Continue reinforcement across construction joints unless otherwise indicated. Do not continue reinforcement through sides of strip placements of floors and slabs. 2. Provide keyways at least 1-1/2 inches deep in all construction joints in walls, slabs, and between walls, and foundation systems. 3. Locate joints for beams, slabs, joists, and girders near the middle of spans. Offset joints in girders a minimum distance of twice the beam width from a beam-girder intersection. 4. Locate horizontal joints in walls and columns at underside of floors, slabs, beams, and girders and at the top of footings or floor slabs. 5. Space vertical joints in walls as indicated. Locate joints beside piers integral with walls, near corners, and in concealed locations where possible. 6. Use a bonding agent at locations where fresh concrete is placed against hardened or partially hardened concrete surfaces. 7. Use epoxy-bonding adhesive at locations where fresh concrete is placed against hardened or partially hardened concrete surfaces. D. Contraction Joints in Slabs-on-Grade: Form weakened-plane contraction joints, sectioning concrete into areas as indicated. Construct contraction joints for a depth equal to at least one-fourth of concrete thickness as follows: 1. Grooved Joints: Form contraction joints after initial floating by grooving and finishing each edge of joint to a radius of 1/8 inch. Repeat grooving of contraction joints after applying surface finishes. Eliminate groover tool marks on concrete surfaces. 2. Sawed Joints: Form contraction joints with power saws equipped with shatterproof abrasive or diamond-rimmed blades. Cut 1/8-inch- wide joints into concrete when cutting action will not tear, abrade, or otherwise damage surface and before concrete develops random contraction cracks. E. Isolation Joints in Slabs-on-Grade: After removing formwork, install joint-filler strips at slab junctions with vertical surfaces, such as column pedestals, foundation walls, grade beams, and other locations, as indicated. 1. Terminate full-width joint-filler strips not less than 1/2 inch or more than 1 inch below finished concrete surface where joint sealants are indicated. 2. Install joint-filler strips in lengths as long as practicable. Where more than one length is required, lace or clip sections together. July 2021 Project#19.00305 033000-Page 21 F. Doweled Joints: Install dowel bars and support assemblies at joints where indicated. Lubricate or asphalt coat one-half of dowel length to prevent concrete bonding to one side of joint. 3.11 WATERSTOPS A. Flexible Waterstops: Provide PVC Waterstops in all construction joints in concrete walls and in concrete beams and slabs. PVC waterstops shall also be provided between concrete beams and slabs at all expansion joints to form a continuous diaphragm. Install in longest lengths practicable. Support and protect exposed waterstops during progress of the Work. Field fabricate joints in waterstops according to manufacturer's written instructions. B. Self-Expanding Strip Waterstops: Install in construction joints and at other locations indicated, according to manufacturer's written instructions, adhesive bonding, mechanically fastening, and firmly pressing into place. Install in longest lengths practicable. 3.12 SLABS ON GRADE: A. Preparation of Subgrade: The subgrade shall be well drained and of adequate and uniform loadbearing nature. The in-place density of the subgrade soils shall be at least the minimum required in the specifications. The bottom of an undrained granular base course shall not be lower than the adjacent finished grade. The subgrade shall be free of frost before concrete placing begins. If the temperature inside a building where concrete is to be placed is below freezing, it shall be raised and maintained above 50 degrees F. long enough to remove all frost from the subgrade. The subgrade shall be moist at the time of concreting. If necessary, it shall be dampened with water in advance of concreting, but there shall be no free water standing on the subgrade nor any muddy or soft spots when the concrete is placed. B. Joints: Joints in slabs on grade shall be located as to divide the slab in areas not in excess of 800 sq. ft. The maximum distance between joints in slabs on grade at all points of contact between slabs on grade and vertical surfaces such as foundation walls and elsewhere as indicated. At exposed joints, recess the premolded fill on a minimum oft-inch, and fill the remaining section with a joint seal and as specified herein. All exposed construction joints in the slabs on grade shall have the edges tooled and the crack and groove formed by the edging tool filled with a polyurethane joint sealant. No Form-A-Key or similar metal form joints will be permitted. July 2021 Project#19.00305 033000—Page 22 3.13 CONCRETE PLACEMENT A. Before placing concrete, the formwork installation, reinforcing steel, and items to be embedded or cast-in must be complete. Notify other crafts involved in ample time to permit the installation of their work; co-operate with other trades in setting such work, as required. Notify Engineer upon completion of installation of all reinforcing and other items in ample time to permit inspection of the work. Soil bottoms at foundation systems are subject to testing laboratory as directed by the Engineer. Place concrete immediately after approval of foundation excavations. B. Before placing concrete, all equipment for mixing and transporting and placing concrete shall be cleaned, all debris and ice removed from spaces to be occupied by the concrete, forms thoroughly cleaned of soil, ice, or other coatings which will prevent proper bond, reinforcement shall be securely tied in place and expansion joint material, anchors, and other embedded items shall be securely positioned. Hardened concrete and foreign materials shall be removed from the conveying equipment. C. Do not add water to concrete during delivery, at Project site, or during placement unless approved by Engineer. 1. Do not add water to concrete after adding high-range water-reducing admixtures to mixture. D. Place concrete in compliance with the practices and recommendations of ACI 304 or as herein specified. Concrete shall be handled from the mixer to the place of final deposit as rapidly as practical by methods which will prevent separation or loss of ingredients and in a manner which will assure that the required quality concrete is obtained. Conveying equipment shall be of size and design to insure a continuous flow of concrete at the delivery point. E. Concrete placed by pumping shall conform to the recommendations of ACI Publication, "Placing Concrete by Pumping Methods." F. Deposit concrete continuously in one layer or in horizontal layers of such thickness that no new concrete will be placed on concrete that has hardened enough to cause seams or planes of weakness. If a section cannot be placed continuously, construction joints shall be located at points as provided for in the drawings or as approved. Deposit concrete as nearly as possible to its final location to avoid segregation due to rehandling or flowing. Do not subject concrete to any procedure which will cause segregation. 1. Deposit concrete in horizontal layers of depth to not exceed formwork design pressures and in a manner to avoid inclined construction joints. 2. Consolidate placed concrete with mechanical vibrating equipment according to ACI 301. July 2021 Project#19.00305 033000-Page 23 3. Do not use concrete which has become non-plastic and unworkable or does not meet the required quality control limits, or which has become contaminated by foreign material. Remove rejected concrete from the project site and dispose of in an acceptable location. Consolidate concrete placed in forms by mechanical vibrating equipment supplemented by hand-spading, rodding, and tamping. Vibration of forms and reinforcing steel will not be permitted. 4. Screed concrete which is to receive other construction to the proper level to avoid excessive skimming or grouting. G. Do not use concrete which has become non-plastic and unworkable or does not meet the required quality control limits, or which has become contaminated by foreign material. Remove rejected concrete from the project site and dispose of in an acceptable location. Consolidate concrete placed in forms by mechanical vibrating equipment supplemented by hand-spading, rodding, and tamping. Vibration of forms and reinforcing steel will not be permitted. H. Concrete shall not be allowed to "freefall" a distance greater than 36 inches. All concrete placed in columns and walls shall be placed through a tremie with the bottom or outlet of the tremie being held at maximum of 36 inches above the surface where concrete is being placed. I. Deposit and consolidate concrete for floors and slabs in a continuous operation, within limits of construction joints, until placement of a panel or section is complete. 1. Consolidate concrete during placement operations so concrete is thoroughly worked around reinforcement and other embedded items and into corners. 2. Maintain reinforcement in position on chairs during concrete placement. 3. Screed slab surfaces with a straightedge and strike off to correct elevations. 4. Slope surfaces uniformly to drains where required. 5. Begin initial floating using bull floats or darbies to form a uniform and open-textured surface plane, free of lumps and hollows before excess bleedwater appears on the surface. Do not sprinkle water on the plastic surface. Do not further disturb slab surfaces before starting finishing operations. J. Cold-Weather Placement: Comply with ACI 306.1 and as follows. Protect concrete work from physical damage or reduced strength that could be caused by frost, freezing actions, or low temperatures. 1. All concrete placed in temperatures 40 degrees F. or below or exposed to temperatures 40 degrees F. or below within five (5) days after the concrete is placed, shall conform to the requirements of ACI 306. July 2021 Project#19.00305 033000—Page 24 2. Do not use frozen materials or materials containing ice or snow. Do not place concrete on frozen subgrade or on subgrade containing frozen materials. 3. Do not use calcium chloride, salt, or other materials containing antifreeze agents or chemical accelerators unless otherwise specified and approved in mixture designs. K. The following protection requirements for concrete placed, protected, and cured in temperature 40 degrees F. or less shall be considered the minimum acceptable standards. 1. Slabs, Beams: Enclose the entire perimeter of the floor below with a continuous sheet of reinforced polyethylene or canvas. The enclosure shall be securely fastened to the top of the outside edge of the forms of the area being protected and to the slab or floor level immediately below the concrete being protected. The top of the concrete surface shall be covered with either insulating blankets designed specifically for this use, or sheets of polystyrene covered with polyethylene. Sufficient heaters shall be placed in the enclosure below the slabs to maintain the air temperature within all sections of the enclosure between 60 degrees F. and 70 degrees F. for a minimum period of five (5) days. Salamanders will not be permitted. 2. Columns and Walls: Forms shall remain in place for a minimum of five days. When the outside temperature falls below 32 degrees F., an insulating blanket shall be dropped over and around the perimeter of the column or wall. These blankets shall remain in place for a minimum period of five days. 3. Slabs on Grade: Cover top with insulating blankets. Blankets shall remain in place for a minimum period of five days. 4. Temperature of concrete at placement shall not be less than 55 degrees F. 5. In addition to laboratory-cured test specimens, additional concrete test specimens shall be cured under the same field conditions that the concrete in the field represented by these cylinders is cured and high thermometers shall be placed on the surface of slab to record daily temperatures during curing period. L. Hot-Weather Placement: Comply with ACI 305 and as follows: 1. An approved admixture designed to retard the rate of set shall be used for all concrete placed when temperatures exceed 75 degrees F. Set retarding admixtures shall conform to ASTM C 494, Type D, water reducing and retarding. 2. Wet forms thoroughly before placing. Cool reinforcing by wetting sufficiently so that steel temperatures will be nearly equal to the ambient air temperature. July 2021 Project#19.00305 033000-Page 25 3. Provide wind breaks around the perimeter of the area where concrete is being placed. 4. Fresh concrete with temperatures 90 degrees F. or above shall be discarded off site. 5. The amount of cement used in the job is computed for the temperature indicated on the approved design mix. For higher concrete mix temperature, the weight of the cement shall be increased at the rate of 12 lbs. per cubic yard for each 10 degrees F. above the concrete mix temperature. 3.14 FINISHING FORMED SURFACES A. Standard Rough Form Finish: Provide a standard rough form finish to all concrete formed surfaces that are to be concealed in the finish work or other construction. NOTE: Interior faces of walls of water retaining structures are not considered to be concealed. Standard rough form finish shall consist of all defective areas repaired as specified and all holes or voids larger than 3/8 inch filled with cement grout. B. Standard Finish for Exposed Surfaces: Provide an applied surface finish of "Thoroseal" or an approved equal to all exposed interior and exterior concrete finishes unless otherwise noted. Interior faces of walls of water retaining structures, including areas which are normally submerged, are considered to be exposed surfaces and shall receive the specified standard finish for exposed surfaces. The surface finish shall consist of chopping and/or grinding down all high spots removing grinding of all burrs and/or other projections, filling all voids 3/8 inch and larger, and cutting out all unsound concrete and patching as specified herein. Before applying the finish, wet and clean the surface of all grease, oils, efflorescence, and other foreign material. Dampen surface immediately ahead of application. Apply the finish coat with a tampico fiber brush by laying the finish coat on the wall in a thick coat of a minimum of 2 lbs. per sq. yard, and brush to a uniform level surface. Do not apply in temperatures 40 degrees F or below, or when temperatures are likely to fall below 40 degrees F within 24 hours after application. The finish coat shall be mixed in strict accordance with the manufacturer's written instructions. After the finish coat has cured, apply a finish coat of "Quick Seal" at a minimum of 12 lb. per sq. yd. The Thoroseal shall be applied by trained technicians. C. Smooth Form Finish: Provide a smooth form finish for all exposed interior concrete walls inside buildings, in pipe gallery areas, or as noted on the Drawings. Standard form finish shall produce a smooth, hard, uniform texture on the concrete. The arrangement of the forms and the number of seams and joints shall be kept to a minimum. Immediately after forms are removed, cut out all unsound concrete and patch as specified herein, and fill all pinholes and other voids larger than 1/4 inch with a cement grout. Compress mortar into voids July 2021 Project#19.00305 033000-Page 26 with a firm rubber trowel or float. After mortar dries, wipe off surface with burlap. 3.15 FINISHING FLOORS AND SLABS A. General: Comply with ACI 302.1 R recommendations for screeding, restraightening, and finishing operations for concrete surfaces. Do not wet concrete surfaces. B. Scratched Finish: After the concrete has been placed, consolidated, struck off, and leveled to a Class C tolerance, but still plastic, the surface shall be roughened with stiff brushes or rakes before a final set. A scratched finish shall be applied to all surfaces which are to receive a bonded surface finish. C. Floated Finish: After the concrete has been placed, consolidated, struck off, and leveled, the concrete shall not be worked further until ready for floating. Floating shall begin when the water sheen has disappeared and when the surface has stiffened sufficiently to permit the operation. During or after the first floating, planeness of surface shall be checked with a 10'-0" straight edge applied at not less than two different angles. All high spots shall be cut down and all low spots filled during this procedure to produce a surface with Class B tolerance throughout. This slab shall then be floated immediately to a uniform sandy texture. A float finish shall be applied to all slab surfaces which are to receive a waterproofing membrane. D. Troweled Finish: The surface shall first be float-finished as specified. It shall next be power troweled, and finally hand troweled. The first troweling after power floating shall produce a smooth surface which may still show some trowel marks. Additional troweling shall be done by hand after the surface has hardened sufficiently. The final troweling shall be done when a ringing sound is produced as the trowel is moved over the surface. The surface shall be thoroughly consolidated by the hand troweling operations. The finished surface shall be essentially free of trowel marks, uniform in texture, and appearance, and shall be planed to a Class tolerance. On surfaces intended to support floor coverings, any defects of sufficient magnitude to show through the floor covering shall be removed by grinding. A trowel finish shall be applied to all surfaces which are exposed to view or are to receive a floor covering of carpet, vinyl, asbestos, tiles, etc. E. Broom Finish: Immediately after the concrete has received a float finish as specified in Section B, it shall be given a coarse transverse scored texture by drawing a broom or burlap belt across the surface. A broom finish shall be applied to all parking surfaces, exterior concrete walks, and concrete paving slabs. July 2021 Project#19.00305 033000—Page 27 3.16 FINISHING TOLERANCES A. Finishes with a Class C tolerance shall be true planes within 1/4 inch in 24 inches as determined by a 24-inch straight edge placed elsewhere on the slab in any direction. Variation from level for Class A. tolerance shall not exceed 1/4 inch in 10'-0" or 1/2 inch maximum in any one bay between columns. Variation from level for a Class B and Class C finish shall not exceed 1/4 inch in 10'-0" or 3/ inch in any one bay between columns. 3.17 RELATED UNFORMED SURFACES A. As tops of walls, horizontal offsets, and similar unformed surfaces occurring adjacent to formed surfaces, strike off smooth and finish with a texture matching the adjacent formed surfaces. Continue the final surface treatment of formed surfaces uniformly across the adjacent unformed surface unless otherwise shown. 3.18 MISCELLANEOUS CONCRETE ITEMS A. Filling In: Fill in holes and openings left in concrete structures after work of other trades is in place unless otherwise indicated. Mix, place, and cure concrete, as specified, to blend with in-place construction. Provide other miscellaneous concrete filling indicated or required to complete the Work. B. Curbs: Provide monolithic finish to interior curbs by stripping forms while concrete is still green and by steel-troweling surfaces to a hard, dense finish with corners, intersections, and terminations slightly rounded. C. Equipment Bases and Foundations: Provide machine and equipment bases and foundations as shown on Drawings. Set anchor bolts for machines and equipment at correct elevations, complying with diagrams or templates from manufacturer furnishing machines and equipment. D. Steel Pan Stairs: Provide concrete fill for steel pan stair treads, landings, and associated items. Cast-in inserts and accessories as shown on Drawings. Screed, tamp, and trowel finish concrete surfaces. 3.19 CONCRETE PROTECTING AND CURING A. General: Protect freshly placed concrete from premature drying and excessive cold or hot temperatures. Comply with ACI 306.1 for cold-weather protection and ACI 305 for hot-weather protection during curing. B. Protect freshly placed concrete from premature drying and excessive cold or hot temperatures, and maintain without drying at a relatively constant July 2021 Project#19.00305 033000-Page 28 temperature for the period of time necessary for hydration of the cement and proper hardening of the concrete. C. Curing for all horizontal slab surfaces, except those to receive a bonded finish material, during periods when the outside air temperature does not exceed 60 degrees F. shall be provided by applying a membrane-forming curing compound to concrete surfaces as soon as the final troweling or floating operation has been completed. Apply uniformly with a roller brush at a rate not to exceed 200 sq. ft. per gallon. Maintain the continuity of the coating and repair damage to the coat during the entire curing period. Curing for surfaces to receive a bonded finish material shall be as noted below. Curing for all horizontal surfaces during period when the outside air temperature will exceed 60 degrees F. shall be provided by covering the entire surface with burlap. The burlap shall be lapped 1/2 width in order to provide a double thickness of burlap. Immediately following the placement of the burlap, the entire surface shall be maintained continuously wet for a period of 7 days. Do not permit surfaces to dry at any period during the required curing period. D. Cure formed surfaces by moist curing with the forms in place for the full curing period, or until forms are removed. If forms are removed before the curing period is complete, apply a membrane-forming curing compound to damp surfaces as soon as the water film has disappeared. Apply uniformly in continuous operation by roller brushes in accordance with the manufacturer's directions. E. Do not use membrane curing compounds on surfaces which are to be covered with a coating material applied directly to the concrete or with any other cover or finish material which shall be bonded to the concrete. These surfaces must be watercured with a full coverage of burlap kept continuously moist for a period of 7 days. F. During the curing period, protect concrete from damaging mechanical disturbances, including load stresses, shocks, excessive vibration and from change caused by subsequent construction operations. 3.20 JOINT FILLING A. Prepare, clean, and install joint filler according to manufacturer's written instructions. 1. Defer joint filling until concrete has aged at least one month. Do not fill joints until construction traffic has permanently ceased. B. Remove dirt, debris, saw cuttings, curing compounds, and sealers from joints; leave contact faces of joint clean and dry. July 2021 Project#19.00305 033000—Page 29 C. Install semirigid joint filler full depth in saw-cut joints and at least 2 inches deep in formed joints. Overfill joint and trim joint filler flush with top of joint after hardening. 3.21 CONCRETE SURFACE REPAIRS A. Defective Concrete: Repair and patch defective areas when approved by Engineer. Remove and replace concrete that cannot be repaired and patched to Engineer's approval. B. Repair and patch defective areas immediately after removal of forms as directed by the Engineer. Cut out honeycombs, rock pockets, voids over inch in diameter and holes left by tie rods and bolts down to solid concrete, but in no case to a depth of less than 1 inch. Make edges of cuts perpendicular to the concrete surfaces. Expose reinforcing steel with at least 3/ inch clearance all around. Dampen all concrete surfaces in contact with patching concrete, and brush with a neat cement grout coating or concrete bonding agent. Place patching concrete before grout takes its initial set. Mix patching concrete of the same materials to provide concrete of the same type or class as the original adjacent concrete. Place, compact, and finish as required to blend with adjacent finished concrete. Cure in the same manner as adjacent concrete. C. Fill holes extending through concrete by means of a plunger type gun or other suitable device from the least exposed face to insure complete filling. Remove stains and other discolorations that cannot be removed by cleaning for all exposed surfaces. Repair isolated random cracks and single holes not over 1 inch in diameter by the dry-pack method. Groove the top of cracks and cut out holes to sound concrete and clean of dust, dirt, and loose particles. Dampen all cleaned concrete surfaces and brush with a neat cement grout coating. Place dry-pack, consisting of 1 part Portland cement to 2-1/2 parts fine aggregate passing a no. 16 mesh sieve using only enough water as required for handling and placing. Compact dry-pack mixture in place and finish to match the existing surface. D. Fill in holes and openings left in concrete structures for the passage of work by other trades, unless otherwise shown or directed, after the work of other trades is in place. Mix, place, and cure concrete as herein specified, to blend with in- place construction. Provide all other miscellaneous concrete filling shown or required to complete work. E. Correct high areas in unformed surfaces by grinding, after the concrete has cured at least 14 days. Correct low areas in unformed surfaces during, or immediately after, completion of surface finishing operations by cutting out the low areas and replacing with fresh concrete. Finish repaired areas to blend into adjacent concrete. Proprietary patching compounds may be used when acceptable to the Engineer. July 2021 Project#19.00305 033000-Page 30 3.22 FIELD QUALITY CONTROL A. Testing and Inspecting: The Owner shall employ a concrete testing laboratory to provide all laboratory testing services on the project and a concrete technician to perform all quality control tests on concrete and materials used to batch concrete. The testing agency employed shall meet the requirement of ASTM E 329. B. Such tests will be provided and paid for by the Owner, except that tests which reveal non-conformance with the Specifications and all succeeding tests for the same area, until conformance with the Specifications is established shall be at the expense of the Contractor. The Owner will be responsible for paying for only the successful tests. C. The Contractor shall provide and maintain adequate facilities on the project for the testing laboratory to locate the required testing equipment and for safe storage area for test cylinders. The general contractor shall provide at his own expense all casual labor needed to assist the concrete technician in obtaining samples of concrete and concrete materials and moving and transporting cylinders and materials which are being tested. D. The following services shall be performed by the designated testing agency: 1. Review and/or check-test the Contractor's proposed materials for compliance with the specifications. 2. Review and/or check-test the Contractor's proposed mix design as required by the Engineer. 3. Secure production samples of materials at plants or stock piles during the course of the work and test for compliance with the specifications. 4. Conduct strength tests of the concrete during construction in accordance with the following procedures: a. Secure composite samples in accordance with ASTM C 172. Each sample shall be obtained from a different batch of concrete on a random basis, avoiding any selection of the test batch other than by a number selected at random before commencement of concrete placement. b. Mold and cure three specimens from each sample in accordance with ASTM C 31. Any deviations from the requirements of this Standard shall be recorded in the test report. c. Test specimens in accordance with ASTM C 39. Two specimens shall be tested at 28 days for acceptance and one shall be the average of the strengths of the two specimens tested at 28 days. If one specimen in a test manifests evidence of improper sampling, molding or testing, it shall be discarded and the strength of the remaining cylinder shall be considered the test result. Should both specimens in the test show any of the above defects, the entire test July 2021 Project#19.00305 033000-Page 31 shall be discarded. When high early strength concrete is used, the specimens shall be tested at the ages indicated in the Contract Documents. d. Make at least one strength test for each 50 cu. yd., or fraction thereof, of each mix design of concrete placed in any I day. When the total quantity of concrete with a given mix design is less than 50 cu. yd., the strength test may be waived by the Engineer if, in his judgment, adequate evidence of satisfactory strength is provided, such as strength test results for the same kind of concrete supplied on the same day and under comparable conditions to other work or other projects. 5. Determine slump of the concrete sample for each strength test and whenever consistency of concrete appears to vary, in accordance with ASTM C 143. 6. Determine air content of normal weight concrete sample for each strength test in accordance with either ASTM C 231, ASTM C 173, or ASTM C 138 as appropriate. 7. Determine unit weight of concrete sample for each strength test. 8. Determine temperature of concrete sample for each strength test. 9. Determine in-place strength of concrete by curing cylinders under the same field conditions that the concrete representing these field cylinders is cured and additionally by determining the degree/hours of curing required for the concrete to develop the required strength for form removal. 10. Inspect concrete batching, mixing and delivery operations to the extent deemed necessary by the Engineer. 11. Review the manufacturer's report for each shipment of cement. E. The Contractor shall maintain an accurate log showing the following information: 1. Date of pour 2. Area poured 3. Temperature at time of pour 4. Average ambient temperature during curing period 5. Date forms scheduled for removal 6. Date form removal completed 7. Method of reshoring (number of floor, etc.) 8. Test cylinder serial numbers 9. Strength of test cylinders at 7 and 28 days. 3.23 EVALUATION AND ACCEPTANCE OF CONCRETE STRUCTURES A. The concrete quality control testing as specified will be evaluated by the following criteria: July 2021 Project#19.00305 033000-Page 32 1. Compressive strength tests for laboratory-cured cylinders will be considered satisfactory if the averages of all sets of three consecutive compressive strength test results equal or exceed the 28 day design compressive strength of the type of class of concrete; and, no individual strength test falls below the required compressive strength by more than 500 psi. If compressive strength tests fail to meet these requirements, the concrete represented by these tests will be considered deficient and subject to additional testing and/or removal. 2. Concrete work which does not conform to the specified requirements, including strength, tolerance and finishes, shall be corrected as directed at the Contractors expense, without extension of time therefor. The Contractor shall also be responsible for the cost of corrections to any other work affected by or resulting from correction to the concrete work. Core tests, if required, shall be evaluated in accordance with the requirements of ACI 318. 3. The testing agency shall further provide quality control inspection and testing of materials used in concrete. The following inspection and tests shall be on all equipment and materials on a random basis: a. Fineness modulus and gradation of sand b. Fineness modulus and gradation of coarse aggregate. c. Colorimetric of sand. d. Weight per cu. ft. and percent of voids on a dry rodded basis of the coarse aggregate. e. Check of aggregate stock piles for contamination or intermingling of aggregates. f. Check of mixing equipment and trucks for compliance with ASTM C 94. g. Absorption of stone and sand. 3.24 LEAK TESTING OF WATER RETAINING STRUCTURES A. All concrete structures which will retain water or wastewater under normal operating conditions shall be filled with water prior to backfilling and final exterior painting and tested for leaks. Unless otherwise specified by the Engineer, the tank shall remain filled with water for a period of seven (7) days. Any leaks, damp spots, or other defects found shall be repaired and made water tight to the satisfaction of the Engineer. The first 48 hours of the test are utilized to allow the concrete to absorb water. After the first 48 hours of the test, the water level shall be noted and monitored for the remaining five (5) days. A reduction in water greater than 0.1 percent per 24 hours shall be considered excessive and shall constitute failure of the leak test. (NOTE: Rainfall and evaporation must be considered duringcalculation of water loss. Rainfall shall p be added to and evaporation shall be deducted from the measured loss to determine net liquid loss.) July 2021 Project#19.00305 033000-Page 33 SECTION 099000 PAINTING PART 1 - GENERAL 1.1 RELATED DOCUMENTS A. Drawings and general provisions of the Contract, including Modified General and Supplementary Conditions and Division 1 Specification Sections, apply to this Section. 1.2 SUMMARY A. This section includes preparation of all surfaces to be painted, all field painting, the repairs to the shop priming or finish coats of paint, and the furnishing and installation of pipe markers, signs and similar items. In general, all equipment furnished with standard shop finishes shall be field painted, except graphic panels, electrical equipment, instruments, and similar items with baked-on enamel finishes. 1.3 DEFINITIONS A. CMU — Concrete Masonry Unit B. CSP — Concrete Standard Profile C. DFT — Dry Film Thickness D. ICRI — International Concrete Repair Institute E. NACE — National Association of Corrosion Engineers F. SF — Square Foot or Square Feet G. SSPC — Steel Structures Painting Council (now known as the Society for Protective Coatings) H. °F — Degrees Fahrenheit 1.4 CONTRACTOR A. The Contractor shall have five (5) years practical experience and successful history in the application of specified products in similar projects. They shall July 2021 Project#19.00305 099000—Page 1 substantiate this requirement by furnishing a list of references and job completions. B. Applicator must successfully demonstrate to the product manufacturer the ability to apply the material correctly and within the confines of the specifications. The Contractor must provide a letter from the manufacturer stating their acceptance of the Contactor for this project to apply these products. C. The Contractor shall be expected to provide tools and equipment in first class working order. D. All directions with respect to temperature, humidity, surface preparation, mixing ratios, induction times, recoat times, and touch up procedures as set forth by the manufacturer shall be adhered to exactly. Nothing in these specifications shall be deemed to cancel or supersede the directions of the coatings manufacturer, except where specific film thickness or spreading rates are set forth. Deviations between these specifications and the manufacturer's recommendations regarding film thickness shall be resolved utilizing the thicker of the indicated coating thickness. E. No additional compensation will be made for equipment required to maintain proper environmental conditions (i.e. temperature, humidity) such as portable heaters or dehumidifiers. F. The Contractor shall be expected to provide and be familiar with the use of film thickness gauges (wet and dry), holiday detectors, sling psychrometer, and such other instruments or gauges or other equipment as may be required to comply with the manufacturer's instructions. G. The Contractor shall possess the applicable license(s) to perform the work as herein described and as specified by Local, State and Federal laws. The Contractor shall include his license number(s) on the front of the envelope containing his bid. H. The Contractor shall submit certification from the paint manufacturer indicating that the quantity of each coating purchased was sufficient to properly coat all surfaces. Such certification shall indicate square footage quantities provided to the manufacturer and the Owner by the Contractor. I. The Contractor shall provide a site mock up with each paint system as a representative of how the systems shall be installed and their final appearance (to include color, sheen, texture etc), which is to be approved by the Engineer before any work is started. For overcoat projects this mock up shall be used to test for adequate adhesion. This approved mock up shall be the quality standard for the rest of the project. This mock up location, size and other job specifics needs shall be detailed by the Engineer. July 2021 Project#19.00305 099000—Page 2 1.5 SYSTEM DESCRIPTION A. General: 1. All field painting shall be under the direct and complete control of the Contractor and only skilled painters shall be used in the work. All paint shall be applied in accordance with the manufacturer's recommendations and as directed. Film thickness of applied paint shall be at least equal to the value determined by the number of coats multiplied by the thickness per coat schedule on the plans for specific paint products. If other paint products are approved, the thickness per coat shall be as determined by the Engineer. A film thickness indicator will be used by the Engineer to determine compliance with the specifications. When field coats of paint are to be applied to shop painted or shop primed surfaces, care shall be taken to insure that only compatible paints are used. 2. Pans or pails of adequate capacity shall be used for mixing paints or similar materials. All paint shall be thoroughly stirred before being taken from the containers and all ready mixed paint shall be applied exactly as received from the manufacturer and no thinner or drier shall be added except as specified, permitted or directed by the Engineer. Successive coats of paint shall be tinted so as to make each coat easily distinguishable from each other with the final undercoat tinted to the approximate shade of the finished coat. 3. Painting shall be continuous and shall be accomplished in an orderly manner so as to facilitate inspection. All materials that receive surface preparation shall receive the primer application the same day that the surface preparation is performed and before flash rusting occurs. Surfaces of exposed members that will be inaccessible after erection shall be cleaned and painted before erection. 4. In general, aluminum, stainless steel, copper, and bronze work shall not be field painted. Care shall be taken not to paint shafts, grease fittings, nameplates, machined parts, sight glasses, etc. il 1.6 SUBMITTALS A. All submittals shall be in accordance with the requirements of Division 1 of these specifications. B. The Contractor shall submit a minimum of six (6) copies of complete shop drawings to the Engineer for approval. Shop drawings shall include a coating schedule, manufacturer's data sheets for all coatings, and color charts. All colors shall be selected by the Owner. July 2021 Project#19.00305 099000-Page 3 1.7 QUALITY ASSURANCE A. All paint shall be manufactured by a reputable manufacturer with at least ten (10) years experience in the manufacture of industrial grade coatings. Paint shall be as manufactured by Carboline, Sherwin-Williams, Tnemec, or approved equal. B. General: Quality assurance procedures and practices shall be utilized to monitor all phases of surface preparation, application, and inspection throughout the duration of the project. Procedures or practices not specifically defined herein may be utilized provided they meet recognized and accepted professional standards and are approved by the Engineer. C. Surface Preparation: Surface preparation will be based upon comparison with: "Pictorial Surface Preparation Standards for Painting Steel Surfaces", SSPC Vis 1 and ASTM D 2200; "Standard Methods of Evaluating Degree of Rusting on Painted Steel Surfaces" SSPC Vis 2 and ASTM D 610; "Visual Standard for Surfaces of New Steel Air blast Cleaned with Sand Abrasive" or "Guideline for Selecting and Specifying Concrete Surface Preparation for Sealers, Coating and Polymer Overlays" and ICRI 310.2 Surface Profile Replica Chips. D. Application: No coating or paint shall be applied: When the surrounding air temperature or the temperature of the surface to be coated is below the minimum required temperature for the specified product; to wet or damp surfaces or in fog or mist; when the temperature is less than 5 degrees F. above the dew point; when the air temperature is expected to drop below 40 degrees F. within six hours after application of coating. Dew point shall be measured by use of an instrument such as a Sling Psychrometer in conjunction with U.S. Department of Commerce Weather Bureau Psychrometric Tables. If above conditions are prevalent, coating or painting shall be delayed or postponed until conditions are favorable. The day's coating or painting shall be completed in time to permit the film sufficient drying time prior to damage by atmospheric conditions. No coatings shall be applied in a dust-laden environment. E. Thickness and Holiday Checking: Thickness of coatings and paint shall be checked with a non-destructive, magnetic type thickness gauge. The integrity of coated interior surfaces shall be tested with an approved inspection device. Non-destructive holiday detectors shall not exceed the voltage recommended by the manufacturer of the coating system. All holiday testing shall be conducted in accordance with NACE SP 0188. For thicknesses between 10 and 20 mils (250 microns and 500 microns), a non-sudsing type wetting agent, such as Kodak Photo Flo, may be added to the water prior to wetting the detector sponge. All pinholes shall be marked, repaired in accordance with the manufacturer's printed recommendations, and retested. No pinholes or other irregularities will be permitted in the final coating. July 2021 Project#19.00305 099000—Page 4 F. Inspection Devices: The Contractor shall furnish, until final acceptance of coating and painting, inspection devices in good working condition for detection of holidays and measurement of dry film thickness of coating and paint. The Contractor shall also furnish U.S. Department of Commerce; National Bureau of Standard certified thickness calibration plates to test accuracy of dry film thickness gauges and certified instrumentation to test accuracy of holiday detectors. G. All necessary testing equipment shall be made available for the Engineer's use at all times until final acceptance of application. Holiday detection devices shall be operated in the presence of the Engineer. H. A NACE certified technical representative from the paint manufacturer shall visit the job site to support the Contractor's personnel, the Owner and/or the Engineer as needed and/or requested. Visits shall be made as needed help to assure the quality of the materials and workmanship. 1.8 SAFETY AND HEALTH REQUIREMENTS A. General: In accordance with requirements set forth by regulatory agencies applicable to the construction industry and manufacturer's printed instructions and appropriate technical bulletins and manuals, the Contractor shall provide and require use of personnel protective lifesaving equipment for persons working on or about the project site. B. Head and Face Protection and Respiratory Devices: Equipment shall include protective helmets, which shall be worn by all persons while in the vicinity of the work. In addition, workers engaged in or near the work during sandblasting shall wear eye and face protection devices and air purifying halfmask or mouthpiece respirators with appropriate filters. Barrier creams shall be used on any exposed areas of skin. C. Ventilation: Where ventilation is used to control hazardous exposure, all equipment shall be explosion proof. Ventilation shall reduce the concentration of air contaminant to the degree a hazard does not exist. Air circulation and exhausting of solvent vapors shall be continued until coatings have fully cured. D. Sound Levels: Whenever the occupational noise exposure exceeds maximum allowable sound levels, the Contractor shall provide and require the use of approved ear protective devices. E. Illumination: Adequate illumination shall be provided while work is in progress, including explosion proof lights and electrical equipment. Illumination of the work area shall be in accordance with SSPC Technology Guide No. 12 "Guide for Illumination of Industrial Painting Projects" for general work, surface preparation application and inspection. July 2021 Project#19.00305 099000—Page 5 F. Confined Space: When applicable it is mandatory that all work be performed in compliance with OSHA'S rules and regulations for working in confined space. Atmospheres within confined spaces as defined by the Occupational Safety and Health Administration are classified as being either a Class A, Class B or Class C environment. 1.9 DELIVERY, STORAGE, AND HANDLING A. All materials to be used in the work, including paints, stains, varnishes, thinners, etc. shall be delivered to the site in their original unbroken containers. All ingredients shall be prepared, packed, labeled, and guaranteed by the manufacturer. All materials shall be stored in enclosed structures to protect them from weather and excessive heat or cold. Flammable coatings or paint must be stored in accordance with the requirements of authorities having jurisdiction. Materials exceeding storage life recommended by the manufacturer or not stored in accordance with manufacturer's instructions shall be rejected. B. Paint storage space shall be kept clean at all times and every precaution shall be taken to avoid fire hazards. C. Store materials not in use in tightly covered containers in well-ventilated areas with ambient temperatures continuously maintained at not less than 50°F. 1. Maintain containers in clean condition, free of foreign materials and residue. 2. Remove rags and waste from storage areas daily. 1.10 WARRANTY A. The work covered by this Section shall be guaranteed for a period of one (1) year from the date of final acceptance against defective materials and faulty workmanship. Upon receipt of notice from the Owner of failure of any part of the work during the guaranty period, the affected work shall be repaired or replaced promptly at the expense of the Contractor. PART 2 - PRODUCTS 2.1 MANUFACTURERS A. All products shall be from a single manufacturer. Although the coatings listed in the general paint schedule include products from several manufacturers for the purpose of specifying the type of coating system, a single manufacturer shall be July 2021 Project#19.00305 099000—Page 6 selected by the Contractor for all products throughout the project. All paint products shall be as manufactured by Carboline, Sherwin-Williams, Tnemec, or approved equal. 2.2 PAINT, GENERAL A. Provide material for use within a selected paint system that are compatible with one another and the substrates indicated, under the conditions of service and application as recommended by manufacturer, based on testing and field experience. B. All finish colors except as noted in this Specification for Pipelines shall be selected by the Owner prior to application by the Contractor. Color chips shall be submitted to the Engineer for color selection. From time to time, as the Engineer may direct analyses of paint and oil, or pigment samples may be made and any samples that are found not complying with these specifications may be cause for rejection of the paint. The cost of the analyses and the cost of supplying paint that complies with these specifications shall be at the Contractor's expense. PART 3 - EXECUTION 3.1 GENERAL A. All surface preparation, coating and painting shall conform to applicable standards of the Steel Structures Painting Council, NACE, ICRI and the manufacturer's printed instructions. Material applied prior to approval of the surface by the Engineer shall be removed and reapplied to the satisfaction of the Engineer at the expense of the Contractor. B. All work shall be performed by skilled craftsmen qualified to perform the required work in a manner comparable with the best standards of practice. Continuity of personnel shall be maintained and transfers of key personnel shall be coordinated with the Engineer. C. The Contractor shall provide an English speaking supervisor at the work site at all times. D. Dust, dirt, oil, grease or any foreign matter that will affect the adhesion or durability of the finish must be removed by washing with clean rags dipped in an approved cleaning solvent and wiped dry with clean rags. E. The Contractor's coating and painting equipment shall be designed for application of materials specified and shall be maintained in first class working July 2021 Project#19.00305 099000—Page 7 condition. Compressors shall have suitable traps and filters to remove water and oils from the air. F. Application of the first coat shall follow immediately after surface preparation and cleaning and before rust bloom or flash rusting occurs. Any cleaned areas not receiving first coat within this period shall be recleaned prior to application of first coat. 3.2 EXAMINATION A. Examine substrates and conditions, with Applicator present, for compliance with requirements for temperature, maximum moisture content and other conditions affecting performance of work. B. All surfaces to be painted shall be prepared as specified below and shall be clean and dry before painting. The maximum moisture content of substrates when measured with an electronic moisture meter shall be as follows: 1. Concrete: 12 percent 2. Masonry (Clay and CMU): 12 percent. 3. Wood: 15 percent 4. Plaster: 12 percent 5. Gypsum Board: 12 percent C. Verify suitability of substrates, including surface conditions and compatibility with existing finishes and primers. D. Begin coating application only after unsatisfactory conditions have been corrected and surfaces are clean and dry. 1. Beginning coating application constitutes Contractor's acceptance of substrates and conditions. 3.3 CONTAINMENT AND DISPOSAL OF HAZARDOUS DEBRIS AND/OR PAINT CHIPS (AS NECESSARY) A. All work shall be in accordance with OSHA Safety & Health Standards 29 CFR 1910.1025. B. The Contractor shall be responsible to make provisions to contain any cleaning residue and/or old paint to within the property and the required containment. Blast cleaning operations shall not begin until the containment method is approved by the Owner's representative. July 2021 Project#19.00305 099000—Page 8 C. All debris and blast related media shall be collected at the end of each workday. All debris shall be placed in approved containers for proper disposal. D. The Contractor shall be responsible for all permits, disposal, and costs required for the disposal of any and all debris generated as part of this contract. Contractor shall take positive steps to ensure that solid and hazardous waste including used solvent and solvent rags is separated from other debris. E. The Contractor shall be responsible for obtaining and paying for the certified laboratory test report to determine if the residue generated during the blasting and paint removal operations on the structure exceeds "leachable" limits for lead, arsenic, barium, cadmium, chromium, mercury, selenium, and silver as determined by EPA's Toxicity Characteristic Leaching Procedure (TCLP). A copy of the certified report shall be furnished to the Engineer. F. The Contractor shall sandblast a representative area and collect the debris generated. The Contractor shall also collect a representative sample of old paint chips from the structure. Samples shall be collected in the presence of the Owner or Engineer and sent to a laboratory for analysis. The Contractor shall furnish the Engineer a certified test report of the Toxicity Characteristic Leaching Procedure (TCLP) documenting the results of a representative random sample taken from the debris and paint chips. The certified report shall state that the results are for the specific job. Should the result exceed any of the EPA maximum limits, the Contractor shall apply for an EPA identification number for a generator of hazardous waste on Notification Form 8700 12. Application and disposal of debris generated shall be through the appropriate local, state or federal officials. G. Should the results of the certified test be less than the EPA maximum limit the Contractor shall dispose of the debris generated in an approved landfill as directed by Environmental Control and the appropriate local, state or federal officials. H. If lead is present, the entire structure shall be totally contained with a rigid containment system. Submit a detailed plan for Lead Abatement Plan to conform to OSHA Standard 29 CFR 1910.1025. Provide a containment system which allows for the efficient containment of environmentally sensitive waste, dust, fumes, and paint debris that will be generated during the blasting operations. The containment systems must be a proven method used previously on similar projects with acceptable results. The Contractor shall comply with the following: 1. Provide a containment system that meets the requirements of SSPC Guide 61 for Class 3 containment with Class A-2 Flexible Walls, Class B-1 Impermeable Walls, Class C-2 Flexible Supports, Class D-1 Full Joint Seals, Class E-2 Entryway with Overlapping Door, Class G-1 Forced Air Flow, and Class J-1 Exhaust Dust Filtration. July 2021 Project#19.00305 099000-Page 9 2. Contractor must submit a written containment and collection of debris plan. 3. The containment must be designed and erected in such a manner that no damaging loads are imposed by the containment and collection systems of the structure to be painted. 4. The containment system will be evaluated by ambient air monitoring for lead. Samples will be taken at three different locations based around the site. Emissions of lead may not exceed a time weight average of 5 micrograms per cubic meter outside the containment. The Contractor may not continue blasting until initial test results indicating that emissions are below the allowable limit are conveyed to the Engineer. 5. Provide ventilation as described below: a. The Contractor must provide forced air ventilation during all coating removal, debris removal, and painting operation performed on the structure. b. The ventilation by forced air system must be sufficient to provide adequate visibility and limit worker lead dust exposure. The minimum required ventilation shall be 40,000 CFM. Should worker exposure to lead dust become excessive or visibility drop to an unacceptable level, then reconfiguration of the ventilation system requiring the use of flexible and/or rigid duct work and additional forced air ventilation capacity shall be required. c. All ventilation equipment shall be explosion proof. d. The exhaust ventilation system will be evaluated by ambient air monitoring. Emissions above a time weighted average of 5 micrograms per cubic meter shall be cause for blasting operation shut down and reevaluation of the exhaust and ventilation system. Modifications to the containment shall be made until compliance is achieved. 3.4 PREPARATION A. All parties, to include the Owner, Engineer, Contractor, installer, any subs and the product manufacture, shall meet prior to any work is started to review the specification and discuss job specific expectations, needs and requirements. B. Comply with all manufacturer's written instructions and recommendations applicable to substrates and paint systems indicated. C. Remove plates, machined surfaces, and similar items already in place that are not to be painted. If removal is impractical or impossible because of size or weight of item, provide surface-applied protection before surface preparation and painting. July 2021 Project#19.00305 099000—Page 10 1. After completing painting operations, use workers skilled in the trades involved to reinstall items that were removed. Remove surface-applied protection if any. 2. Do not paint over labels of independent testing agencies or equipment name, identification, performance rating, or nomenclature plates. D. Clean all substrates of substances that could impair bond of paints, including dirt, debris, oil, grease, and incompatible paints and encapsulants. 1. Remove incompatible primers and reprime substrate with compatible primers as required to produce paint systems indicated. E. All surface preparation shall be in accordance with the latest revision of the surface preparation specifications of the Steel Structures Painting Council and NACE. 1. Solvent Cleaning (SSPC-SP1): Removal of oil, grease, soil and other contaminants by use of solvents, emulsions, cleaning compounds, steam cleaning or similar materials and methods which involve a solvent or cleaning action. This standard is an integral part of all other standards, shall precede any other surface preparation described herein, and is not required to be referenced separately. 2. Hand Tool Cleaning (SSPC-SP2): Removal of loose rust, loose mill scale and other detrimental foreign matter to degree specified by hand chipping, scraping, sanding and wire brushing. 3. Power Tool Cleaning (SSPC-SP3): Removal of loose rust' loose mill scale and other detrimental foreign matter to degree specified by power wire brushing, power impact tools or power sanders. 4. Brush-Off Blast Cleaning (SSPC-SP7/NACE 4): Brush-off blast cleaned surface, when viewed without magnification, shall be free of all visible oil, grease, dirt, dust, loose mill scale, loose rust, and loose coating. Tightly adherent mill scale, rust, and coating may remain on the surface. Mill scale, rust, and coating are considered tightly adherent if they cannot be removed by lifting with a dull putty knife after abrasive blast cleaning has been performed. 5. Commercial Blast Cleaning (SSPC-SP6/NACE 3): Blast cleaning until at least 66 percent of unit area is free or all visible residues. 6. Near White Blast Cleaning (SSPC-SP10/NACE 2): Blast cleaning to nearly white metal cleanliness, until at least 95 percent of unit area is free of all visible residues. July 2021 Project#19.00305 099000-Page 11 7. Surface Preparation of Concrete (SSPC-SP13/NACE 6): This standard gives requirements for surface preparation of concrete by mechanical, chemical, or thermal methods prior to the application of bonded protective coating or lining systems. 8. Power Tool Cleaning to Bare Metal (SSPC-SP11): This standard covers the requirements for power tool cleaning to produce a bare metal surface and to retain or produce a minimum 25 micrometer (1.0 mil) surface profile. This standard is suitable where a roughened, clean, bare metal surface is required, but where abrasive blasting is not feasible or permissible. F. Blast cleaning for all surfaces shall be by dry method unless otherwise directed. G. Particle size of abrasives used in blast cleaning shall be that which will produce a 1.5 — 2.0 mil (37.5 microns - 50.0- microns) surface profile or in accordance with recommendations of the manufacturer of the specified coating or paint system to be applied. H. Abrasive used in blast cleaning operations shall be new, washed, graded and free of contaminants that would interfere with adhesion of coating or paint and shall not be reused unless specifically approved by the Engineer. I. During blast cleaning operations, caution shall be exercised to insure that surrounding existing coatings or paint are not exposed to abrasion from blast cleaning. J. The Contractor shall keep the area of his work and the surrounding environment in a clean condition. He shall not permit blasting materials to accumulate as to constitute a nuisance or hazard to the accomplishment of the work, the operation of the existing facilities, or nuisance to the surrounding environment. K. Blast cleaned surfaces shall be cleaned prior to application of specified coatings or paint. No coatings or paint shall be applied over damp or moist surfaces. L. Specific Surface Preparation: Surface preparation for the specific system shall be as specified herein. 3.5 APPLICATION A. All paints shall be applied in accordance with the manufacturer's written instructions based on the materials being coated and their exposure conditions. 1. Use applicators and techniques suited for paint and substrate indicated. July 2021 Project#19.00305 099000—Page 12 2. Paint surfaces behind movable items same as similar exposed surfaces. Before final installation, paint surfaces behind permanently fixed items with prime coat only. B. Protective coverings or drop cloths shall be used to protect floors, fixtures, and equipment. Care shall be exercised to prevent coatings or paint from being spattered onto surfaces that are not to be coated or painted. Surfaces from which materials cannot be removed satisfactorily shall be recoated or repainted as required to produce a finish satisfactory to the Engineer. C. Tint each undercoat a lighter shade to facilitate identification of each coat if multiple coats of same material are to be applied. Tint undercoats to match color of topcoat, but provide sufficient difference in shade of undercoats to distinguish each separate coat. D. If undercoats or other conditions show through topcoat, apply additional coats until cured film has a uniform paint finish, color, and appearance. E. Each application of coating or paint shall be applied evenly, free of brush marks, sags, runs, with no evidence of poor workmanship. Care shall be exercised to avoid lapping on glass or hardware. Coatings and paints shall be sharply cut to lines. Finished surfaces shall be free from defects or blemishes. All coats herein specified are in addition to shop or other coats specified to be applied by other trades. F. All welds, edges and other irregular surfaces shall receive a brush coat of the specified product prior to application of the first complete coat. G. All items listed below shall be painted unless specifically noted otherwise. Items which come from the manufacturer completely painted shall be given a single coat of machinery enamel or shall be "touched-up" only as directed by the Engineer. H. Where appropriate, all solvent vapors shall be completely removed by suction type exhaust fans and blowers before placing in operating service. I. Unless otherwise directed by Engineer, all exposed pipelines and equipment shall be painted and identified as follows: Item Color Equipment & Pumps Imperial Blue Water Lines Raw or Recycled Water Olive Green Settled or Clarified Aqua Finished or Potable Water Dark Blue Non-Potable Water Light Gray With Yellow Band Chemical Lines July 2021 Project#19.00305 099000—Page 13 1 Alum or Primary Coagulant Orange Ammonia White Carbon Slurry Black Caustic Yellow with Green Band Chlorine (Gas and Solution) Yellow Chlorine Dioxide Yellow with Violet Band Fluoride Light Blue with Red Band Lime Slurry Light Green Ozone Yellow with Orange Band Phosphate Compounds Light Green with Red Band Polymers or Coagulant Aids Orange with Green Band Potassium Permanganate Violet Soda Ash Light Green with Orange Band Sulfuric Acid Yellow with Red Band Sulfur Dioxide Light Green with Yellow Band All PVC Chemical Lines Unpainted with Stenciled Labels Waste Lines Backwash Waste Light Brown Sludge Dark Brown Sewer (Sanitary or Other) Dark Gray Other Chlorine Gas Safety Yellow Compressed Air Dark Green Natural Gas Safety Red J. All exposed pipes shall have stenciled arrows pointing in the direction of flow, with fluid labels every 10'-0" or at convenient locations. K. General: 1. In general, equipment previously shop painted with the Manufacturer's standard paint system shall be repainted with colors to suit the area of installation. The Engineer may, at his option, require that certain equipment not be painted. The Contractor shall verify that all field coatings are compatible with the shop coatings. 2. Imperfections and scratches on equipment not repainted shall be touched up with matching paint provided by the Equipment Manufacturer. 3. Where more than one coat of paint is required, the undercoats shall be a shade lighter than succeeding coats to insure complete coverage. 4. Colors shall be as selected by the Owner. 5. Aluminum and stainless steel surfaces shall not be painted unless specifically indicated in the specifications or drawings. July 2021 Project#19.00305 099000—Page 14 6. All pipes and other metals that have been dipped in tar or bituminous products shall receive two (2) coats of an anti-bleeding sealer in place of priming coat. 7. Bronze and brass shall not be painted unless specifically required or requested by the Engineer. Galvanized metal and the other metals, which require painting shall receive one (1) coat of a vinyl wash primer before prime painting. 3.6 PAINT SCHEDULE A. NOTE: Contractor shall select all coating systems for the entire project from a single manufacturer. Approved equal systems may be utilized if approved by the Engineer. B. Masonry: 1. All interior and exterior exposed concrete block walls above and below grade shall be painted. a. Surface Preparation: Clean, dry, no cracks or nail heads. b. Coating system: System First/Prime Second/Intermediate Third/Finish Manufacturer Carboline Sanitile 600 Carboguard 890 Carbothane 133 HB (at 60-70 SF/gallon) (at 4.0-6.0 mils DFT) (at 3.0-5.0 mils DFT) Sherwin-Williams Cement-Plex 875 Macropoxy 646 Macropoxy 646 (at 75 SF/gallon) (at 4.0-6.0 mils DFT) (at 4.0-6.0 mils DFT) Series 607 Prime-A- Series 607 Conformal Tnemec Pell Plus(at 75-100 Stain N/A SF/Gallon) (at 75-100 SF/Gallon) C. Exterior Concrete: 1. Surface Preparation: SSPC-SP13/NACE6 Surface Preparation of Concrete. Power wash with 5,000 psi using the rotating "turbo" nozzle, to remove all loose paint, dirt, dust, mildew and all other foreign matter. The surface must be clean and dry before painting. 2. Coating System: System First/Prime Second/Intermediate Third/Finish Manufacturer Carboline Sanitile 600 Carboguard 890 Carbothane 133 HB (at 60-70 SF/gallon) (at 4.0-6.0 mils DFT) (at 3.0-5.0 mils DFT) Loxon Conditioner Loxon XP Loxon XP Sherwin-Williams A24-100(at 200-300 (at 6.4-8.3 mils DFT) (at 6.4-8.3 mils DFT) SF/Gallon) Tnemec Series 151 Elasto-Grip Series 156 Enviro-Crete Series 156 Enviro-Crete (at 0.7-1.5 mils DFT) (at 4.0-6.0 mils DFT) (at 4.0-6.0 mils DFT) July 2021 Project#19.00305 099000—Page 15 D. Interior Concrete: 1. Surface Preparation: SSPC-SP13/NACE6 Surface Preparation of Concrete, ICRI CSP 3. The surface must be clean and dry before painting. 2. Coating System: System First/Prime Second/Intermediate Third/Finish Manufacturer Carboline Sanitile 600 Carboguard 890 Carboguard 890 (at 60-70 SF/gallon) (at 4.0-6.0 mils DFT) (at 4.0-6.0 mils DFT) Kern Cati Coat Epoxy Pro Industrial HB Water Pro Industrial HB Water Sherwin-Williams filler B42 Series (at 10.0- Based Catalyzed Epoxy Based Catalyzed Epoxy 20.0 mils DFT) (at 4.0-6.0 mils DFT) (at 4.0-6.0 mils DFT) Tnemec Series 1254 EpoxoBlock Series 27WB Typoxy Series 27WB Typoxy (at 75 SF/Gal) (at 4.0-8.0 mils DFT) (at 4.0-8.0 mils DFT) E. Concrete Floors: (All new concrete floors shall be coated gray unless otherwise indicated.) 1. Surface Preparation: SSPC-SP13/NACE6 Surface Preparation of Concrete, ICRI CSP 3. The surface must be clean and dry before painting. 2. Coating System: System First/Prime Second/Intermediate Third/Finish Manufacturer Carboline Carboguard 1340 WB Carboguard 890 Carboguard 890 (at 1.5-2.0 mils DFT) (at 6.0-8.0 mils DFT) (at 6.0-8.0 mils DFT) Sherwin-Williams Corobond 100 Cor-Cote HP Cor-Cote HP (at 6.0-8.0 mils DFT) (at 6.0-8.0 mils DFT) (at 6.0-8.0 mils DFT) Series 201 Epoxoprime Series 281 Tneme- Series 247 UVX Tnemec (at 8.0-12.0 mils DFT) Glaze (at 2.0-3.0 mils DFT) (at 8.0-12.0 mils DFT) F. Concrete (Potable or Non-Potable Immersion): 1. Surface Preparation: SSPC-SP13/NACE6 Surface Preparation of Concrete, ICRI CSP 5. The surface must be clean and dry before painting. 2. Coating System: System First/Prime Second/Intermediate Third/Finish Manufacturer Carboline Carboguard 510 Carboguard 891 Carboguard 891 (at 1/8 inch) (at 6.0-8.0 mils DFT) (at 6.0-8.0 mils DFT) _ Sherwin-Williams Corobond 300(at Macropoxy 646 PW Macropoxy 646 PW (at 4.0-6.0 mils DFT) (at 4.0-6.0 mils DFT) Series 218 MortarClad Series N140 Pota-Pox Series N140 Pota-Pox Tnemec (at 1/8 inch) Plus Plus (at 4.0-8.0 mils DFT) (at 4.0-8.0 mils DFT) July 2021 Project#19.00305 099000—Page 16 G. Concrete (Wastewater Immersion): 1. Surface Preparation: SSPC-SP13/NACE6 Surface Preparation of Concrete, ICRI CSP 5. The surface must be clean and dry before painting. 2. Coating System: System First/Prime Second/Intermediate Third/Finish Manufacturer Carboline Carboguard 510 Carboguard 890 Carboguard 890 (at 1/8 inch) (at 6.0-8.0 mils DFT) (at 6.0-8.0 mils DFT) Sherwin-Williams Corobond 300(at Corcote SC Plus(at 40.0- Corcote SC Plus(at 125.0 mils DFT) 40.0-125.0 mils DFT) Series 434 Perma-Sheild Series 218 MortarClad Series 435 Perma-Glaze Tnemec H2S (at 1/8 inch) (at 120.0-125 0 mils DFT) (at 15.0-20.0 mils DFT) H. Exposed Steel: 1. Surface Preparation: SSPC-SP6/NACE3 Commercial blast cleaning. The surface must be clean and dry before painting. 2. Coating System: System First/Prime Second/Intermediate Third/Finish Manufacturer Carboline Carboguard 890 Carbothane 133 HB N/A (at 4.0-6.0 mils DFT) (at 3.0-5.0 mils DFT) Sherwin-Williams Corothane 1 Mio Zinc Macropoxy 646 FC WB Acrolon 100 (at 3.0-4.0 mils DFT) (at 4.0-6.0 mils DFT) (at 2.0-4.0 mils DFT) Tnemec Series 1 Omnithane Series 27WB Typoxy Series 740 UVX (at 2.5-3.5 mils DFT) (at 4.0-8.0 mils DFT) (at 3.0-5.0 mils DFT) I. Steel (Potable or Non Potable Immersion): 1. Surface Preparation: SSPC-SP10/NACE2 Near-white blast cleaning with a minimum angular anchor profile of 2.0 mils. The surface must be clean and dry before painting. 2. Coating System: System First/Prime Second/Intermediate Third/Finish Manufacturer Carboline Carboguard 60 Carboguard 891 Carboguard 891 (at 4.0 mils DFT) (at 6.0-8.0 mils DFT) (at 6.0-8.0 mils DFT) Sherwin-Williams Corothane I Galvapac Macropoxy 646 PW Macropoxy 646 PW (at 3.0-4.0 mils DFT) (at 4.0-6.0 mils DFT) (at 4.0-6.0 mils DFT) Series 1 Omnithane (at Series N140 Pota-Pox Series N140 Pota-Pox Tnemec 2.5-3.5 mils DFT) Plus Plus (at 4.0-8.0 mils DFT) (at 4.0-8.0 mils DFT) July 2021 Project#19.00305 099000—Page 17 J. Steel (Wastewater Immersion): 1. Surface Preparation: SSPC-SP10/NACE2 Near-white blast cleaning with a minimum angular anchor profile of 2.0 mils. The surface must be clean and dry before painting. 2. Coating System: System First/Prime Second/Intermediate Third/Finish Manufacturer Carboline Carboguard 60 Carboguard 890 Carboguard 890 (at 4.0 mils DFT) (at 6.0-8.0 mils DFT) (at 6.0-8.0 mils DFT) Sherwin-Williams N/A SherGlass FF SherGlass FF (at 8.0-20.0 mils DFT) (at 8.0-20.0 mils DFT) Series 1 Omnithane (at Series 446 Perma-Shield Series 446 Perma- Tnemec 2.5-3.5 mils DFT) MCU Shield MCU (at 5.0-10.0 mils DFT) (at 5.0-10.0 mils DFT) K. Exposed Galvanized Steel: 1. Surface Preparation: Remove all soluble and insoluble contaminants and corrosion. Remove any storage stains per Section 6.2 of ASTM D6386. Sweep (Abrasive) Blasting per ASTM D 6386 to achieve a uniform anchor profile (1.0 - 2.0 mils). 2. Coating System: System First/Prime Second/Intermediate Third/Finish Manufacturer Carboline Rustbond Carbothane 133 HB Carbothane 133 HB (at 1.0-2.0 mils DFT) (at 3.0-5.0 mils DFT) (at 3.0-5.0 mils DFT) Sherwin-Williams Macropoxy 646 FC WB Acrolon 100 N/A (at 4.0-6.0 mils DFT) (at 2.0-4.0 mils DFT) Tnemec Series 27WB Typoxy Series 740 UVX N/A (at 4.0-8.0 mils DFT) (at 3.0-5.0 mils DFT) L. Interior Drywall: 1. Surface Preparation: The surface must be clean and dry before painting. 2. Coating System: System First/Prime Second/Intermediate Third/Finish Manufacturer Carboline Sanitile 120 Carbocrylic 3359 Carbocrylic 3359 (at 1.0-2.0 mils DFT) (at 2.0-3.0 mils DFT) (at 2.0-3.0 mils DFT) PrepRite 200 Water-Based Tile Clad Pro Industrial HB Water Sherwin-Williams Based Catalyzed Epoxy (at 1.0-2.0 mils DFT) (at 2.0-3.0 mils DFT) (at 4.0-6.0 mils DFT) Series 151 Elasto-Grip Series 113 Tneme- Series 113 Tneme- Tnemec (at 0.7-1.5 mils DFT) Tufcoat Tufcoat (at 4.0-6.0 mils DFT) (at 4.0-6.0 mils DFT) July 2021 Project#19.00305 099000—Page 18 M. Wood: 1. Surface Preparation: The surface must be clean and dry before painting. 2. Coating System: System First/Prime Second/Intermediate Third/Finish Manufacturer Carboline Sanitile 120 Carbocrylic 3359 Carbocrylic 3359 (at 1.0-2.0 mils DFT) (at 2.0-3.0 mils DFT) (at 2.0-3.0 mils DFT) Sherwin-Williams PrepRite DTM Acrylic Coating DTM Acrylic Coating (at 1.5-2.0 mils DFT) (at 2.0-3.0 mils DFT) (at 2.0-3.0 mils DFT) Tnemec Series 10 Tnemec Primer Series 1028 Enduratone Series 1028 Enduratone (at 2.0-3.5 mils DFT) (at 2.0-3.0 mils DFT) (at 2.0-3.0 mils DFT) 3. Finish: Semi-Gloss N. Cast Iron and Ductile Iron Pipe, Valves, and Fittings (above and below grade) 1. Interior (above grade) a. Surface Preparation: Remove mill scale; blast clean per SSPC-SP5/NACE1 White blast cleaning with a minimum of 3.0 mils of surface profile. Surface must be clean and dry before painting. b. Coating System: System First/Prime Second/Final Manufacturer Carboline Carboguard 60(at 4.0 mils DFT) Carbothane 133 HB(at 6.0-8.0 mils DFT) Sherwin-Williams Macropoxy 646(at 3.0-5.0 mils DFT) Macropoxy 646 (at 3.0-5.0 mils DFT) Tnemec Series 431 Prima-Shield PL Series 431 Prima-Shield PL (at 40.0 mils DFT) (at 40.0 mils DFT) 2. Exterior (below grade) a. Surface Preparation: None. b. Paint system: Manufacturer's factory paint system as specified elsewhere. 3. Exterior (submerged) a. Surface Preparation: Blast clean per SSPC-SP10 clean and dry (except galvanized steel piping). Surface profile requirements shall be as recommended on manufacturer's product data sheets. July 2021 Project#19.00305 099000—Page 19 b. Coating System: System First/Prime Second/Intermediate Manufacturer Carboline Carboguard 890 (at 4.0-6.0 mils DFT) Carboguard 890(at 4.0-6.0 mils DFT) Sherwin-Williams Macropoxy 646(at 2.0-3.0 mils DFT) Macropoxy 646 (at 4.0-6.0 mils DFT) Tnemec Series 431 Prima-Shield PL Series 431 Prima-Shield PL (at 40.0 mils DFT) (at 40.0 mils DFT) 3.7 FIELD QUALITY CONTROL A. Testing of Paint Materials: Owner reserves the right to invoke the following procedure at any time and as often as Owner deems necessary during the period when paints are being applied: 1. Owner will engage the services of a qualified testing agency to sample paint materials being used. Samples of material delivered to Project site will be taken, identified, sealed, and certified in presence of Contractor. 2. Testing agency will perform tests for compliance of paint materials with product requirements. 3. Owner may direct Contractor to stop applying paints if test results show materials being used do not comply with product requirements. Contractor shall remove noncomplying-paint materials from Project site, pay for testing, and repaint surfaces which were painted with rejected materials. Contractor will be required to remove rejected materials from previously painted surfaces if, on repainting with complying materials, the two paints are incompatible. 3.8 CLEANING AND PROTECTION A. At end of each workday, remove rubbish, empty cans, rags, and other discarded materials from Project site. B. After completing paint application, clean spattered surfaces. Coating or paint spots and oil or stains on adjacent surfaces shall be removed and the jobsite cleaned. All damage to surfaces resulting from the work of this section shall be cleaned, repaired, or refinished to the satisfaction of the Engineer at no cost to the Owner. C. Do not scratch or damage adjacent finished surfaces. All staging, scaffolding, and containers shall be removed from the site. D. Protect work of other trades against damage from paint application. Correct damage to work of other trades by cleaning, repairing, replacing, and refinishing, as approved by Engineer, and leave in an undamaged condition. July 2021 Project#19.00305 099000—Page 20 E. At completion of construction activities of other trades, touch up and restore damaged or defaced painted surfaces. 3.9 SPARE PAINT A. The Contractor shall furnish one (1) gallon of all types and colors of paint to the Owner for future touch-up painting. END OF SECTION 099000 July 2021 Project#19.00305 099000-Page 21 1 SECTION 260519 LOW-VOLTAGE ELECTRICAL POWER CONDUCTORS AND CABLES PART 1 - GENERAL 1.1 RELATED DOCUMENTS A. Drawings and general provisions of the Contract, including General and Supplementary Conditions and Division 01 Specification Sections, apply to this Section. 1.2 SUMMARY A. Section Includes: 1. Copper building wire. 2. Connectors and splices. B. Related Requirements: 1. Section 260523 "Control-Voltage Electrical Power Cables" for control systems communications cables and Classes 1, 2, and 3 control cables. 1.3 DEFINITIONS A. RoHS: Restriction of Hazardous Substances. B. VFC: Variable-frequency controller. 1.4 ACTION SUBMITTALS A. Product Data: For each type of product. B. Product Schedule: Indicate type, use, location, and termination locations. 1.5 INFORMATIONAL SUBMITTALS A. Field quality-control reports. July 2021 Project#19.00305 260519-Page 1 PART 2 - PRODUCTS 2.1 COPPER BUILDING WIRE A. Description: Flexible, insulated and uninsulated, drawn copper current-carrying conductor with an overall insulation layer or jacket, or both, rated 600 V or less. B. Standards: 1. Listed and labeled as defined in NFPA 70, by a qualified testing agency, and marked for intended location and use. 2. RoHS compliant. 3. Conductor and Cable Marking: Comply with wire and cable marking according to UL's "Wire and Cable Marking and Application Guide." C. Conductors: Copper, complying with ASTM B3 for bare annealed copper and with ASTM B496 for stranded conductors. D. Conductor Insulation: 1. Type TC-ER: Comply with NEMA WC 70/ICEA S-95-658 and UL 1277. 2. Type THHN and Type THWN-2: Comply with UL 83. 3. Type XHHW-2: Comply with UL 44. E. Shield: 1 . Type TC-ER: Cable designed for use with VFCs, with oversized crosslinked polyethylene insulation, spiral-wrapped foil plus 85 percent coverage braided shields and insulated full-size ground wire, and sunlight- and oil-resistant outer PVC jacket. 2.2 CONNECTORS AND SPLICES A. Description: Factory-fabricated connectors, splices, and lugs of size, ampacity rating, material, type, and class for application and service indicated; listed and labeled as defined in NFPA 70, by a qualified testing agency, and marked for intended location and use. B. Jacketed Cable Connectors: For steel and aluminum jacketed cables, all steel or malleable iron, electro zinc plated and chromate coated, insulated-throat, with angled, screw-secured mechanical saddle clip, designed to connect cables specified in this Section. Provide Thomas & Betts Tite-Bite Connectors or approved equal C. Lugs: One piece, seamless, designed to terminate conductors specified in this Section. July 2021 Project# 19.00305 260519- Page 2 1 . Material: Tin-plated Copper. 2. Type: Two hole with long barrels. 3. Termination: Compression. PART 3 - EXECUTION 3.1 CONDUCTOR MATERIAL APPLICATIONS A. Feeders: 1. Copper; solid for No. 10 AWG and smaller; stranded for No. 8 AWG and larger. B. Branch Circuits: 1. Copper. Solid for No. 12 AWG and smaller; stranded for No. 10 AWG and larger. C. VFC Output Circuits Cable: Extra-flexible stranded for all sizes. 3.2 CONDUCTOR INSULATION AND MULTICONDUCTOR CABLE APPLICATIONS AND WIRING METHODS A. Service Entrance: Type THHN/THWN-2, single conductors in raceway. B. Exposed Feeders: Type THHN/THWN-2, single conductors in raceway. C. Feeders Concealed in Ceilings, Walls, Partitions, and Crawlspaces: Type THHN/THWN-2, single conductors in raceway. D. Feeders Concealed in Concrete, below Slabs-on-Grade, and Underground: Type THHN/THWN-2, single conductors in raceway. E. Exposed Branch Circuits: Type THHN/THWN-2, single conductors in raceway. F. Branch Circuits Concealed in Ceilings, Walls, and Partitions: 1. In office, laboratory, toilet rooms and similar administrative type spaces: Type THHN/THWN-2, single conductors in raceway. 2. Do not conceal branch circuits in industrial process areas. An exposed wiring method shall be utilized. G. Branch Circuits Concealed in Concrete, below Slabs-on-Grade, and Underground: Type THHN/THWN-2, single conductors in raceway. July 2021 Project# 19.00305 260519- Page 3 1. When using tray cable, enclose in conduit between cable tray and point of connection to equipment being served. H. Cord Drops and Portable Appliance Connections: Type SO, hard service cord with stainless steel, wire-mesh, strain relief device at terminations to suit application. I. VFC Output Circuits: Type TC-ER cable with braided shield. 3.3 INSTALLATION, GENERAL A. Conceal cables in finished walls, ceilings, and floors unless otherwise indicated. B. Complete raceway installation between conductor and cable termination points according to Section 260533 "Raceways and Boxes for Electrical Systems" prior to pulling conductors and cables. C. Use manufacturer-approved pulling compound or lubricant where necessary; compound used must not deteriorate conductor or insulation. Do not exceed manufacturer's recommended maximum pulling tensions and sidewall pressure values. D. Use pulling means, including fish tape, cable, rope, and basket-weave wire/cable grips, that will not damage cables or raceway. E. Support cables according to Section 260529 "Hangers and Supports for Electrical Systems." 3.4 INSTALLATION OF FIRE-ALARM WIRE AND CABLE A. Comply with NECA 1 and NFPA 72. B. Wiring Method: Install wiring in metal raceway according to Section 260529 "Hangers and Supports for Electrical Systems." C. Wiring within Enclosures: Separate power-limited and non-power-limited conductors as recommended by manufacturer. Install conductors parallel with or at right angles to sides and back of the enclosure. Bundle, lace, and train conductors to terminal points with no excess. Connect conductors that are terminated, spliced, or interrupted in any enclosure associated with fire-alarm system to terminal blocks. Mark each terminal according to system's wiring diagrams. Make all connections with approved crimp-on terminal spade lugs, pressure-type terminal blocks, or plug connectors. D. Cable Taps: Use numbered terminal strips in junction, pull, and outlet boxes; cabinets; or equipment enclosures where circuit connections are made. July 2021 Project# 19.00305 260519- Page 4 SECTION 260529 SYSTEMS HANGERS AND SUPPORTS FOR ELECTRICAL PART 1 - GENERAL 'I 1.1 RELATED DOCUMENTS A. Drawings and general provisions of the Contract, including General and Supplementary Conditions and Division 01 Specification Sections, apply to this Section. 1.2 SUMMARY A. Section Includes: 1. Steel slotted support systems. 2. Conduit and cable support devices. 3. Support for conductors in vertical conduit. 4. Mounting, anchoring, and attachment components, including mechanical expansion anchors, concrete inserts, clamps, through bolts, toggle bolts, and hanger rods. B. Related Requirements: 1. Section 260548.16 "Seismic Controls for Electrical Systems" for products and installation requirements necessary for compliance with seismic criteria. 1.3 ACTION SUBMITTALS A. Product Data: For each type of product. 1. Include construction details, material descriptions, dimensions of individual components and profiles, and finishes for the following: a. Slotted support systems, hardware, and accessories. b. Clamps. c. Hangers. d. Sockets. e. Eye nuts. f. Fasteners. g. Anchors. h. Saddles. i. Brackets. July 2021 Project# 19.00305 260529-Page 1 2. Include rated capacities and furnished specialties and accessories. B. Shop Drawings: For fabrication and installation details for electrical hangers and support systems. 1. Hangers. Include product data for components. 2. Slotted support systems. 3. Equipment supports. 4. Vibration Isolation Base Details: Detail fabrication including anchorages and attachments to structure and to supported equipment. Include adjustable motor bases, rails, and frames for equipment mounting. 1.4 INFORMATIONAL SUBMITTALS A. Seismic Qualification Data: Certificates, for hangers and supports for electrical equipment and systems, accessories, and components, from manufacturer. 1. Basis for Certification: Indicate whether withstand certification is based on actual test of assembled components or on calculation. 2. Dimensioned Outline Drawings of Equipment Unit: Identify center of gravity and locate and describe mounting and anchorage provisions. 3. Detailed description of equipment anchorage devices on which the certification is based and their installation requirements. PART 2 - PRODUCTS 2.1 PERFORMANCE REQUIREMENTS A. Seismic Performance: Hangers and supports shall withstand the effects of earthquake motions determined according to ASCE/SEI 7. 1. The term "withstand" means "the supported equipment and systems will remain in place without separation of any parts when subjected to the seismic forces specified and the supported equipment and systems will be fully operational after the seismic event." 2. Component Importance Factor: 1.5. 2.2 SUPPORT, ANCHORAGE, AND ATTACHMENT COMPONENTS A. Steel Slotted Support Systems: Preformed steel channels and angles with minimum 13/32-inch-diameter holes at a maximum of 8 inches o.c. in at least one surface. 1. Standard: Comply with MFMA-4 factory-fabricated components for field assembly. July 2021 Project# 19.00305 260529- Page 2 2. Material for Channel, Fittings, and Accessories: Stainless steel, Type 316. 3. Channel Width: Selected for applicable load criteria. 4. Protect finishes on exposed surfaces from damage by applying a strippable, temporary protective covering before shipping. B. Conduit and Cable Support Devices: Stainless steel, steel and malleable-iron hangers, clamps, and associated fittings, designed for types and sizes of raceway or cable to be supported. C. Support for Conductors in Vertical Conduit: Factory-fabricated assembly consisting of threaded body and insulating wedging plug or plugs for nonarmored electrical conductors or cables in riser conduits. Plugs shall have number, size, and shape of conductor gripping pieces as required to suit individual conductors or cables supported. Body shall be made of malleable iron. D. Mounting, Anchoring, and Attachment Components: Items for fastening electrical items or their supports to facility surfaces include the following: 1. Mechanical-Expansion Anchors: Insert-wedge-type, stainless steel, for use in hardened portland cement concrete, with tension, shear, and pullout capacities appropriate for supported loads and building materials where used. 2. Concrete Inserts: Steel or malleable-iron, slotted support system units are similar to MSS Type 18 units and comply with MFMA-4 or MSS SP-58. 3. Clamps for Attachment to Steel Structural Elements: MSS SP-58 units are suitable for attached structural element. 4. Through Bolts: Structural type, hex head, and high strength. Comply with ASTM F3125/F3125M, Grade A325. 5. Toggle Bolts: Stainless-steel springhead type. 6. Hanger Rods: Threaded steel. PART 3 - EXECUTION 3.1 APPLICATION A. Comply with the following standards for application and installation requirements of hangers and supports, except where requirements on Drawings or in this Section are stricter: 1. NECA 1. 2. NECA 101 B. Apply firestopping to electrical penetrations of fire-rated floor and wall assemblies to restore original fire-resistance rating of assembly according to an applicable detail in the UL Fire Resistance Directory. July 2021 Project#19.00305 260529-Page 3 C. Comply with requirements for raceways and boxes specified in Section 260533 "Raceways and Boxes for Electrical Systems." D. Maximum Support Spacing and Minimum Hanger Rod Size for Raceways: Space supports for EMT, IMC, and RMC as scheduled in NECA 1, where its Table 1 lists maximum spacings that are less than those stated in NFPA 70. Minimum rod size shall be 1/4 inch in diameter. E. Multiple Raceways or Cables: Install trapeze-type supports fabricated with steel slotted or other support system, sized so capacity can be increased by at least 25 percent in future without exceeding specified design load limits. 1. Secure raceways and cables to these supports with two-bolt conduit clamps. F. Provide stainless steel conduit supporting, mounting, anchoring and attachment components and devices in chemical buildings. 3.2 SUPPORT INSTALLATION A. Comply with NECA 1 and NECA 101 for installation requirements except as specified in this article. B. Raceway Support Methods: In addition to methods described in NECA 1, EMT IMC and RMC may be supported by openings through structure members, according to NFPA 70. C. Strength of Support Assemblies: Where not indicated, select sizes of components so strength will be adequate to carry present and future static loads within specified loading limits. Minimum static design load used for strength determination shall be weight of supported components plus 200 lb. D. Mounting and Anchorage of Surface-Mounted Equipment and Components: Anchor and fasten electrical items and their supports to facility structural elements by the following methods unless otherwise indicated by code: 1. To Wood: Fasten with lag screws or through bolts. 2. To New Concrete: Bolt to concrete inserts. 3. To Masonry: Approved toggle-type bolts on hollow masonry units and expansion anchor fasteners on solid masonry units. 4. To Existing Concrete: Expansion anchor fasteners. 5. To Steel: Beam clamps (MSS SP-58, Type 19, 21, 23, 25, or 27), complying with MSS SP-69. 6. To Light Steel: Sheet metal screws. 7. Items Mounted on Hollow Walls and Nonstructural Building Surfaces: Mount cabinets, panelboards, disconnect switches, control enclosures, pull and junction boxes, transformers, and other devices on slotted- July 2021 Project# 19.00305 260529-Page 4 channel racks attached to substrate by means that comply with seismic- restraint strength and anchorage requirements. E. Drill holes for expansion anchors in concrete at locations and to depths that avoid the need for reinforcing bars. 3.3 INSTALLATION OF FABRICATED METAL SUPPORTS A. Cut, fit, and place miscellaneous metal supports accurately in location, alignment, and elevation to support and anchor electrical materials and equipment. B. Field Welding: Comply with AWS D1.1/D1.1M. 3.4 CONCRETE BASES A. Construct concrete bases of dimensions indicated, but not less than 4 inches larger in both directions than supported unit, and so anchors will be a minimum of 10 bolt diameters from edge of the base. B. Use 4000-psi, 28-day compressive-strength concrete. Concrete materials, reinforcement, and placement requirements are specified in Section 033000 "Cast-in-Place Concrete." C. Anchor equipment to concrete base as follows: 1 . Place and secure anchorage devices. Use supported equipment manufacturer's setting drawings, templates, diagrams, instructions, and directions furnished with items to be embedded. 2. Install anchor bolts to elevations required for proper attachment to supported equipment. 3. Install anchor bolts according to anchor-bolt manufacturer's written instructions. 3.5 PAINTING A. Touchup: Clean field welds and abraded areas of shop paint. Paint exposed areas immediately after erecting hangers and supports. Use same materials as used for shop painting. Comply with SSPC-PA 1 requirements for touching up field-painted surfaces. 1. Apply paint by brush or spray to provide minimum dry film thickness of 2.0 mils. B. Galvanized Surfaces: Clean welds, bolted connections, and abraded areas and apply galvanizing-repair paint to comply with ASTM A780. July 2021 Project# 19.00305 260529- Page 5 SECTION 260533 RACEWAYS AND BOXES FOR ELECTRICAL SYSTEMS PART 1 - GENERAL 1.1 RELATED DOCUMENTS A. Drawings and general provisions of the Contract, including General and Supplementary Conditions and Division 01 Specification Sections, apply to this Section. 1.2 SUMMARY A. Section Includes: 1. Metal conduits and fittings. 2. Nonmetallic conduits and fittings. 3. Metal wireways and auxiliary gutters. 4. Boxes, enclosures, and cabinets. B. Related Requirements: 1. Section 260543 "Underground Ducts and Raceways for Electrical Systems" for exterior ductbanks, handholes, and underground utility construction. 1.3 DEFINITIONS A. GRC: Galvanized rigid steel conduit. B. IMC: Intermediate metal conduit. 1.4 ACTION SUBMITTALS A. Product Data: For each type of product. B. Shop Drawings: For custom enclosures. Include plans, elevations, sections, and attachment details. July 2021 Project# 19.00305 260533- Page 1 1.5 INFORMATIONAL SUBMITTALS A. Seismic Qualification Data: Certificates, for enclosures, cabinets, and conduit racks and their mounting provisions, including those for internal components, from manufacturer. 1. Basis for Certification: Indicate whether withstand certification is based on actual test of assembled components or on calculation. 2. Dimensioned Outline Drawings of Equipment Unit: Identify center of gravity and locate and describe mounting and anchorage provisions. 3. Detailed description of equipment anchorage devices on which the certification is based and their installation requirements. 4. Detailed description of conduit support devices and interconnections on which the certification is based and their installation requirements. B. Source quality-control reports. PART 2 - PRODUCTS 2.1 METAL CONDUITS AND FITTINGS A. Metal Conduit: 1. Listing and Labeling: Listed and labeled as defined in NFPA 70, by a qualified testing agency, and marked for intended location and application. 2. GRC: Comply with ANSI C80.1 and UL 6. 3. EMT: Comply with ANSI C80.3 and UL 797. 4. FMC: Comply with UL 1; aluminum. 5. LFMC: Flexible steel conduit with PVC jacket and complying with UL 360. B. Metal Fittings: 1. Comply with NEMA FB 1 and UL 514B. 2. Listing and Labeling: Listed and labeled as defined in NFPA 70, by a qualified testing agency, and marked for intended location and application. 3. Fittings, General: Listed and labeled for type of conduit, location, and use. 4. Conduit Fittings for Hazardous (Classified) Locations: Comply with UL 1203 and NFPA 70. 5. Fittings for EMT: a. Material: Steel. b. Type: Compression with hexagonal locknuts. c. Other: Insulated throat. July 2021 Project# 19.00305 260533- Page 2 6. Fittings for FMC: Steel or malleable iron, electro zinc plated and chromate g coated, insulated-throat, with angled, screw-secured mechanical saddle clip. Provide Thomas & Betts Tite-Bite Connectors or approved equal. C. Joint Compound for GRC: Approved, as defined in NFPA 70, by authorities having jurisdiction for use in conduit assemblies, and compounded for use to lubricate and protect threaded conduit joints from corrosion and to enhance their conductivity. 2.2 NONMETALLIC CONDUITS AND FITTINGS A. Nonmetallic Conduit: 1. Listing and Labeling: Nonmetallic conduit shall be listed and labeled as defined in NFPA 70, by a qualified testing agency, and marked for intended location and application. 2. RNC: Type EPC-40-PVC, complying with NEMA TC 2 and UL 651 unless otherwise indicated. 3. Continuous HDPE: Comply with UL 651A. B. Nonmetallic Fittings: 1. Fittings, General: Listed and labeled for type of conduit, location, and use. 2. Fittings for RNC: Comply with NEMA TC 3; match to conduit or tubing type and material. a. Fittings for LFNC: Comply with UL 514B. 3. Solvents and Adhesives: As recommended by conduit manufacturer. 2.3 METAL WIREWAYS AND AUXILIARY GUTTERS A. Description: Sheet metal, complying with UL 870 and NEMA 250, Type 1, Type 4X, stainless steel and Type 12 to match requirements for boxes and enclosures at the location installed, unless otherwise indicated, and sized according to NFPA 70. 1 . Metal wireways installed outdoors shall be listed and labeled as defined in NFPA 70, by a qualified testing agency, and marked for intended location and application. B. Fittings and Accessories: Include covers, couplings, offsets, elbows, expansion joints, adapters, hold-down straps, end caps, and other fittings to match and mate with wireways as required for complete system. C. Wireway Covers: Screw-cover type unless otherwise indicated. July 2021 Project# 19.00305 260533- Page 3 D. Finish: Manufacturer's standard enamel finish, except provide no finish where stainless steel is utilized. 2.4 BOXES, ENCLOSURES, AND CABINETS A. General Requirements for Boxes, Enclosures, and Cabinets: Boxes, enclosures, and cabinets installed in wet locations shall be listed for use in wet locations. B. Sheet Metal Outlet and Device Boxes: Comply with NEMA OS 1 and UL 514A. C. Cast-Metal Outlet and Device Boxes: Comply with NEMA FB 1, ferrous alloy, Type FD, with gasketed cover. D. Nonmetallic Outlet and Device Boxes: Comply with NEMA OS 2 and UL 514C. E. Luminaire Outlet Boxes: Nonadjustable, designed for attachment of luminaire weighing 50 lb. Outlet boxes designed for attachment of luminaires weighing more than 50 lb shall be listed and marked for the maximum allowable weight. F. Small Sheet Metal Pull and Junction Boxes: NEMA OS 1. G. Cast-Metal Access, Pull, and Junction Boxes: Comply with NEMA FB 1 and UL 1773, galvanized, cast iron with gasketed cover. H. Box extensions used to accommodate new building finishes shall be of same material as recessed box. I. Device Box Dimensions: 4 inches by 2-1/8 inches by 2-1/8 inches deep. J. Gangable boxes are prohibited. K. Hinged-Cover Enclosures: Comply with UL 50 and NEMA 250, Type 4X, stainless steel with continuous-hinge cover with flush latch unless otherwise indicated. PART 3 - EXECUTION 3.1 RACEWAY APPLICATION A. Outdoors: Apply raceway products as specified below unless otherwise indicated: 1. Exposed Conduit: GRC. 2. Concealed Conduit, Aboveground: RNC, Type EPC-40-PVC. July 2021 Project# 19.00305 260533- Page 4 3. Underground Conduit: RNC, Type EPC-40-PVC, direct buried or concrete encased as indicated on the drawings. a. Where directional bore is indicated, provide continuous HDPE. 4. Connection to Vibrating Equipment (Including Transformers and Hydraulic, Pneumatic, Electric Solenoid, or Motor-Driven Equipment): LFMC. 5. Boxes and Enclosures, Aboveground: NEMA 250 a. Small Junction, Outlet and Device Boxes: Cast Iron. b. Larger Boxes and Enclosures: Type 4X, stainless steel. B. Indoors: Apply raceway products as specified below unless otherwise indicated: 1. Exposed: GRC. 2. Exposed and Subject to Corrosion: RNC. Raceway locations include the following: a. Chemical storage, mixing, metering and handling areas. b. Areas specifically identified on the drawings. 3. Concealed in Ceilings and Interior Walls and Partitions: EMT. 4. Connection to Vibrating Equipment (Including Transformers and Hydraulic, Pneumatic, Electric Solenoid, or Motor-Driven Equipment): FMC, except use LFMC in damp or wet locations and in chemical buildings. 5. Boxes and Enclosures: a. Finished areas: NEMA 250, Type 1 b. Non-finished areas (process, mechanical and electrical): NEMA 250, Type 4. 1) Small Junction, Outlet and Device Boxes: Cast Iron. 2) Larger Boxes and Enclosures: Type 4X, stainless steel. c. Areas of High Corrosion: Match raceway materials, unless otherwise indicated. C. Minimum Raceway Size: 3/4-inch trade size. D. Raceway Fittings: Compatible with raceways and suitable for use and location. 1. Rigid and Intermediate Steel Conduit: Use threaded rigid steel conduit fittings unless otherwise indicated. Comply with NEMA FB 2.10. E. Do not install nonmetallic conduit where ambient temperature exceeds 120 deg F. July 2021 Project#19.00305 260533-Page 5 3.2 INSTALLATION A. Comply with requirements in Section 260529 "Hangers and Supports for Electrical Systems" for hangers and supports. B. Comply with NECA 1 and NECA 101 for installation requirements except where requirements on Drawings or in this article are stricter. Comply with NECA 102 for aluminum conduits. Comply with NFPA 70 limitations for types of raceways allowed in specific occupancies and number of floors. C. Do not fasten conduits onto the bottom side of a metal deck roof. D. Keep raceways at least 6 inches away from parallel runs of flues and steam or hot-water pipes. Install horizontal raceway runs above water and steam piping. E. Complete raceway installation before starting conductor installation. F. Arrange stub-ups so curved portions of bends are not visible above finished slab. G. Install no more than the equivalent of three 90-degree bends in any conduit run except for control wiring conduits, for which fewer bends are allowed. Support within 12 inches of changes in direction. H. Make bends in raceway using large-radius preformed ells. Field bending shall be according to NFPA 70 minimum radii requirements. Use only equipment specifically designed for material and size involved. I. General Conduit and Boxes Installation: 1. Interior finished spaces including but not necessarily limited to offices, control rooms, laboratories, toilets, conference rooms, office storage rooms and other similar locations: a. Conceal conduit within finished walls, ceilings, and floors unless otherwise indicated. 2. Interior process, mechanical and electrical spaces: a. Exposed conduit and boxes, unless otherwise indicated. 3. Exterior locations: a. Conceal all raceway and boxes serving lighting, receptacles, HVAC equipment and similar devices and equipment at the exterior walls of buildings. b. Exposed all other conduit and boxes, unless otherwise indicated. 4. Install conduits parallel or perpendicular to building and construction lines. July 2021 Project# 19.00305 260533- Page 6 J. Support conduit within 12 inches of enclosures to which attached. K. Raceways Embedded in Slabs: 1 . Run conduit larger than 1-inch trade size, parallel or at right angles to main reinforcement. Where at right angles to reinforcement, place conduit close to slab support. Secure raceways to reinforcement at maximum 10- foot intervals. 2. Arrange raceways to cross building and structure expansion joints at right angles with expansion fittings. 3. Arrange raceways to keep a minimum of 2 inches of concrete cover in all directions. 4. Do not embed threadless fittings in concrete unless specifically approved by Engineer for each specific location. L. Stub-Ups to Above Recessed Ceilings: 1 . Use EMT for raceways. 2. Use a conduit bushing or insulated fitting to terminate stub-ups not terminated in hubs or in an enclosure. M. Threaded Conduit Joints, Exposed to Wet, Damp, Corrosive, or Outdoor Conditions: Apply listed compound to threads of raceway and fittings before making up joints. Follow compound manufacturer's written instructions. N. Terminate threaded conduits into threaded hubs or with locknuts on inside and outside of boxes or cabinets. Install insulated throat metal grounding bushings on service conduits. O. Install raceways square to the enclosure and terminate at enclosures with locknuts. Install locknuts hand tight plus 1/4 turn more. P. Do not rely on locknuts to penetrate nonconductive coatings on enclosures. Remove coatings in the locknut area prior to assembling conduit to enclosure to assure a continuous ground path. Q. Cut conduit perpendicular to the length. For conduits 2-inch trade size and larger, use roll cutter or a guide to make cut straight and perpendicular to the length. R. Install pull wires in empty raceways. Use polypropylene or monofilament plastic line with not less than 200-lb tensile strength. Leave at least 12 inches of slack at each end of pull wire. Cap underground raceways designated as spare above grade alongside raceways in use. S. Install raceway sealing fittings at accessible locations according to NFPA 70 and fill them with listed sealing compound. For concealed raceways, install each fitting in a flush steel box with a blank cover plate having a finish similar to July 2021 Project# 19.00305 260533-Page 7 that of adjacent plates or surfaces. Install raceway sealing fittings according to NFPA 70. T. Install devices to seal raceway interiors at accessible locations. Locate seals so no fittings or boxes are between the seal and the following changes of environments. Seal the interior of all raceways at the following points: 1. Where an underground service raceway enters a building or structure. 2. Conduit extending from interior to exterior of building. 3. Where otherwise required by NFPA 70. U. Comply with manufacturer's written instructions for solvent welding RNC and fittings. V. Expansion-Joint Fittings: 1. Install in each run of aboveground RNC that is located where environmental temperature change may exceed 30 deg F and that has straight-run length that exceeds 25 feet. Install in each run of aboveground RMC conduit that is located where environmental temperature change may exceed 100 deg F and that has straight-run length that exceeds 100 feet. 2. Install type and quantity of fittings that accommodate temperature change listed for each of the following locations: a. Outdoor Locations Not Exposed to Direct Sunlight: 125 deg F temperature change. b. Outdoor Locations Exposed to Direct Sunlight: 155 deg F temperature change. c. Indoor Spaces Connected with Outdoors without Physical Separation: 125 deg F temperature change. 3. Install fitting(s) that provide expansion and contraction for at least 0.00041 inch per foot of length of straight run per deg F of temperature change for PVC conduits. Install fitting(s) that provide expansion and contraction for at least 0.000078 inch per foot of length of straight run per deg F of temperature change for metal conduits. 4. Install expansion fittings at all locations where conduits cross building or structure expansion joints. 5. Install each expansion-joint fitting with position, mounting, and piston setting selected according to manufacturer's written instructions for conditions at specific location at time of installation. Install conduit supports to allow for expansion movement. W. Flexible Conduit Connections: Comply with NEMA RV 3. Use a maximum of 36 inches of flexible conduit for recessed and semirecessed luminaires, equipment subject to vibration, noise transmission, or movement; and for transformers and motors. July 2021 Project# 19.00305 260533- Page 8 1. Use LFMC in damp or wet locations. X. Mount boxes at heights indicated on Drawings. If mounting heights of boxes are not individually indicated, give priority to ADA requirements. Y. Recessed Boxes in Masonry Walls: Saw-cut opening for box in center of cell of masonry block, and install box flush with surface of wall. Prepare block surfaces to provide a flat surface for a raintight connection between box and cover plate or supported equipment and box. Z. Horizontally separate boxes mounted on opposite sides of walls so they are not in the same vertical channel. AA. Locate boxes so that cover or plate will not span different building finishes. BB. Support boxes of three gangs or more from more than one side by spanning two framing members or mounting on brackets specifically designed for the purpose. CC. Fasten junction and pull boxes to or support from building structure. Do not support boxes by conduits. 3.3 INSTALLATION OF UNDERGROUND CONDUIT A. Direct-Buried Conduit: 1. Excavate trench bottom to provide firm and uniform support for conduit. Prepare trench bottom as specified in Section 312000 "Earth Moving" for pipe less than 6 inches in nominal diameter. 2. Install backfill as specified in Section 312000 "Earth Moving." 3. After installing conduit, backfill and compact. Start at tie-in point, and work toward end of conduit run, leaving conduit at end of run free to move with expansion and contraction as temperature changes during this process. Firmly hand tamp backfill around conduit to provide maximum supporting strength. After placing controlled backfill to within 12 inches of finished grade, make final conduit connection at end of run and complete backfilling with normal compaction as specified in Section 312000 "Earth Moving." 4. Install manufactured rigid steel conduit elbows for stub-ups at poles and equipment and at building entrances through floor. a. Couple steel conduits to ducts with adapters designed for this purpose, and encase coupling with 3 inches of concrete for a minimum of 12 inches on each side of the coupling. b. For stub-ups at equipment mounted on outdoor concrete bases and where conduits penetrate building foundations, extend steel conduit horizontally a minimum of 60 inches from edge of foundation or July 2021 Project# 19.00305 260533-Page 9 equipment base. Install insulated grounding bushings on terminations at equipment. 5. Underground Warning Tape: Comply with requirements in Section 260553 "Identification for Electrical Systems." 3.4 SLEEVE AND SLEEVE-SEAL INSTALLATION FOR ELECTRICAL PENETRATIONS A. Install sleeves and sleeve seals at penetrations of exterior floor and wall assemblies. Comply with requirements in Section 260544 "Sleeves and Sleeve Seals for Electrical Raceways and Cabling." 3.5 FIRESTOPPING A. Apply firestopping to electrical penetrations of fire-rated floor and wall assemblies to restore original fire-resistance rating of assembly according to an applicable detail in the UL Fire Resistance Directory. 3.6 PROTECTION A. Protect coatings, finishes, and cabinets from damage and deterioration. 1. Repair damage to galvanized finishes with zinc-rich paint recommended by manufacturer. END OF SECTION 260533 July 2021 Project# 19.00305 260533- Page 10 SECTION 262213 LOW-VOLTAGE DISTRIBUTION TRANSFORMERS PART 1 - GENERAL 1.1 RELATED DOCUMENTS A. Drawings and general provisions of the Contract, including General and Supplementary Conditions and Division 01 Specification Sections, apply to this Section. 1.2 SUMMARY A. Section includes distribution, dry-type transformers with a nominal primary and secondary rating of 600 V and less, with capacities up to 1500 kVA. 1.3 ACTION SUBMITTALS A. Product Data: For each type of product. 1. Include construction details, material descriptions, dimensions of individual components and profiles, and finishes for each type and size of transformer. 2. Include rated nameplate data, capacities, weights, dimensions, minimum clearances, installed devices and features, and performance for each type and size of transformer. B. Shop Drawings: 1. Detail equipment assemblies and indicate dimensions, weights, loads, required clearances, method of field assembly, components, and location and size of each field connection. 2. Vibration Isolation Base Details: Detail fabrication including anchorages and attachments to structure and to supported equipment. 3. Include diagrams for power, signal, and control wiring. 1.4 INFORMATIONAL SUBMITTALS A. Seismic Qualification Data: Certificates, for transformers, accessories, and components, from manufacturer. 1. Basis for Certification: Indicate whether withstand certification is based on actual test of assembled components or on calculation. 2. Dimensioned Outline Drawings of Equipment Unit: Identify center of gravity and locate and describe mounting and anchorage provisions. July 2021 Project# 19.00305 262213-Page 1 3. Detailed description of equipment anchorage devices on which the certification is based and their installation requirements. 4. Certification: Indicate that equipment meets Project seismic requirements. B. Source quality-control reports. C. Field quality-control reports. 1.5 CLOSEOUT SUBMITTALS A. Operation and Maintenance Data: For transformers to include in emergency, operation, and maintenance manuals. 1.6 DELIVERY, STORAGE, AND HANDLING A. Inspection: On receipt, inspect for and note any shipping damage to packaging and transformer. 1. If manufacturer packaging is removed for inspection, and transformer will be stored after inspection, re-package transformer using original or new packaging materials that provide protection equivalent to manufacturer's packaging. B. Storage: Store in a warm, dry, and temperature-stable location in original shipping packaging. C. Temporary Heating: Apply temporary heat according to manufacturer's written instructions within the enclosure of each ventilated-type unit, throughout periods during which equipment is not energized and when transformer is not in a space that is continuously under normal control of temperature and humidity. D. Handling: Follow manufacturer's instructions for lifting and transporting transformers. PART 2 - PRODUCTS 2.1 MANUFACTURERS A. Manufacturers: Subject to compliance with requirements, provide products by one of the following: 1. ABB (Electrification Products Division). 2. Eaton. July 2021 Project# 19.00305 262213-Page 2 3. Schneider Electric USA (Square D). B. Other Manufacturers: Other manufacturers will be considered if request for approval to supply products is received by the Engineer not later than fourteen days before the receipt of bids. Other approved manufacturers will be named by addendum prior to receipt of bids. C. Source Limitations: Obtain each transformer type from single source from single manufacturer. 2.2 PERFORMANCE REQUIREMENTS A. Seismic Performance: Transformers shall withstand the effects of earthquake motions determined according to ASCE/SEI 7. 1. The term "withstand" means "the transformer will remain in place without separation of any parts when subjected to the seismic forces specified and the transformer will be fully operational after the seismic event." 2.3 GENERAL TRANSFORMER REQUIREMENTS A. Description: Factory-assembled and -tested, air-cooled units for 60-Hz service. B. Comply with NFPA 70. 1. Electrical Components, Devices, and Accessories: Listed and labeled as defined in NFPA 70, by a qualified testing agency, and marked for intended location and use. C. Transformers Rated 15 kVA and Larger: 1. Comply with 10 CFR 431 (DOE 2016) efficiency levels. 2. Marked as compliant with DOE 2016 efficiency levels by an NRTL. D. Shipping Restraints: Paint or otherwise color-code bolts, wedges, blocks, and other restraints that are to be removed after installation and before energizing. Use fluorescent colors that are easily identifiable inside the transformer enclosure. 2.4 DISTRIBUTION TRANSFORMERS A. Comply with NFPA 70, and list and label as complying with UL 1561. B. Provide transformers that are constructed to withstand seismic forces specified in Section 260548.16 "Seismic Controls for Electrical Systems." July 2021 Project#19.00305 262213-Page 3 C. Cores: Electrical grade, non-aging silicon steel with high permeability and low hysteresis losses. 1. One leg per phase. 2. Core volume shall allow efficient transformer operation at 10 percent above the nominal tap voltage. 3. Grounded to enclosure. D. Coils: Continuous windings except for taps. 1. Coil Material: Aluminum. 2. Internal Coil Connections: Brazed or pressure type. 3. Terminal Connections: Welded. E. Encapsulation: Transformers smaller than 30 kVA shall have core and coils completely resin encapsulated. F. Enclosure (Indoor Applications): Ventilated. 1. NEMA 250, Type 2: Core and coil shall be encapsulated within resin compound using a vacuum-pressure impregnation process to seal out moisture and air. 2. KVA Ratings: Based on convection cooling only and not relying on auxiliary fans. 3. Wiring Compartment: Sized for conduit entry and wiring installation. 4. Finish: Comply with NEMA 250. a. Finish Color: Gray weather-resistant enamel. G. Enclosure (Outdoor Applications): Ventilated. 1. NEMA 250, Type 3R: Core and coil shall be encapsulated within resin compound, sealing out moisture and air. 2. Wiring Compartment: Sized for conduit entry and wiring installation. 3. Finish: Comply with NEMA 250. a. Finish Color: Gray weather-resistant enamel. H. Taps for Transformers 3 kVA and Smaller: None. I. Taps for Transformers 7.5 to 24 kVA: One 5 percent tap above and one 5 percent tap below normal full capacity. J. Taps for Transformers 25 kVA and Larger: Two 2.5 percent taps above and two 2.5 percent taps below normal full capacity. July 2021 Project# 19.00305 262213-Page 4 K. Insulation Class, Smaller Than 30 kVA: 180 deg C, UL-component-recognized insulation system with a maximum of 115 deg C rise above 40 deg C ambient temperature. L. Insulation Class, 30 kVA and Larger: 220 deg C, UL-component-recognized insulation system with a maximum of 115 deg C rise above 40 deg C ambient temperature. M. Grounding: Provide ground-bar kit or a ground bar installed on the inside of the transformer enclosure. N. Electrostatic Shielding: Each winding shall have an independent, single, full- width copper electrostatic shield arranged to minimize interwinding capacitance. 1 . Arrange coil leads and terminal strips to minimize capacitive coupling between input and output terminals. 2. Include special terminal for grounding the shield. O. Neutral: Rated 200 percent of full load current for K-factor-rated transformers. P. Wall Brackets: Manufacturer's standard brackets or, when required by seismic loading, wall brackets fabricated from design drawings signed and sealed by a licensed structural engineer. 2.5 IDENTIFICATION A. Nameplates: Engraved, laminated-acrylic, melamine plastic or stainless steel signs for each distribution transformer, mounted with corrosion-resistant screws. Nameplates and label products are specified in Section 260553 "Identification for Electrical Systems." 2.6 SOURCE QUALITY CONTROL A. Test and inspect transformers according to IEEE C57.12.01 and IEEE C57.12.91. 1. Resistance measurements of all windings at rated voltage connections and at all tap connections. 2. Ratio tests at rated voltage connections and at all tap connections. 3. Phase relation and polarity tests at rated voltage connections. 4. No load losses, and excitation current and rated voltage at rated voltage connections. 5. Impedance and load losses at rated current and rated frequency at rated voltage connections. 6. Applied and induced tensile tests. 7. Regulation and efficiency at rated load and voltage. July 2021 Project# 19.00305 262213- Page 5 8. Insulation-Resistance Tests: a. High-voltage to ground. b. Low-voltage to ground. c. High-voltage to low-voltage. 9. Temperature tests. PART 3 - EXECUTION 3.1 EXAMINATION A. Examine conditions for compliance with enclosure- and ambient-temperature requirements for each transformer. B. Verify that field measurements are as needed to maintain working clearances required by NFPA 70 and manufacturer's written instructions. C. Examine walls, floors, roofs, and concrete bases for suitable mounting conditions where transformers will be installed. D. Verify that ground connections are in place and requirements in Section 260526 "Grounding and Bonding for Electrical Systems" have been met. Environment: Enclosures shall be rated for the environment in which they are located. Proceed with installation only after unsatisfactory conditions have been corrected. 3.2 INSTALLATION A. Install wall-mounted transformers level and plumb with wall brackets fabricated by transformer manufacturer or, when required by seismic loadings, from design drawings signed and sealed by a licensed structural engineer. 1. Coordinate installation of wall-mounted and structure-hanging supports with actual transformer provided. 2. Brace wall-mounted transformers as specified in Section 260548.16 "Seismic Controls for Electrical Systems." B. Install transformers level and plumb on a concrete base with vibration- dampening supports. Locate transformers away from corners and not parallel to adjacent wall surface. C. Construct concrete bases according to Section 033000 "Cast-in-Place Concrete" and anchor floor-mounted transformers according to manufacturer's written instructions, seismic codes applicable to Project, and requirements in Section 260529 "Hangers and Supports for Electrical Systems." July 2021 Project# 19.00305 262213-Page 6 1. Coordinate size and location of concrete bases with actual transformer provided. Cast anchor-bolt inserts into bases. Concrete, reinforcement, and formwork requirements are specified with concrete. D. Secure transformer to concrete base according to manufacturer's written instructions. E. Secure covers to enclosure and tighten all bolts to manufacturer-recommended torques to reduce noise generation. F. Remove shipping bolts, blocking, and wedges. 3.3 CONNECTIONS A. Ground equipment according to Section 260526 "Grounding and Bonding for Electrical Systems." B. Connect wiring according to Section 260519 "Low-Voltage Electrical Power Conductors and Cables." C. Tighten electrical connectors and terminals according to manufacturer's published torque-tightening values. If manufacturer's torque values are not indicated, use those specified in UL 486A-486B. D. Provide flexible connections at all conduit and conductor terminations and supports to eliminate sound and vibration transmission to the building structure. 3.4 FIELD QUALITY CONTROL A. Perform tests and inspections with the assistance of a factory-authorized service representative. B. Small (Up to 167-kVA Single-Phase or 500-kVA Three-Phase) Dry-Type Transformer Field Tests: 1. Visual and Mechanical Inspection. a. Inspect physical and mechanical condition. b. Inspect anchorage, alignment, and grounding. c. Verify that resilient mounts are free and that any shipping brackets have been removed. d. Verify the unit is clean. e. Perform specific inspections and mechanical tests recommended by manufacturer. f. Verify that as-left tap connections are as specified. July 2021 Project# 19.00305 262213- Page 7 g. Verify the presence of surge arresters and that their ratings are as specified. 2. Electrical Tests: a. Measure resistance at each winding, tap, and bolted connection. b. Perform insulation-resistance tests winding-to-winding and each winding-to-ground. Apply voltage according to manufacturer's published data. In the absence of manufacturer's published data, comply with NETA ATS, Table 100.5. Calculate polarization index: the value of the index shall not be less than 1.0. c. Perform turns-ratio tests at all tap positions. Test results shall not deviate by more than one-half percent from either the adjacent coils or the calculated ratio. If test fails, replace the transformer. d. Verify correct secondary voltage, phase-to-phase and phase-to- neutral, after energization and prior to loading. C. Remove and replace units that do not pass tests or inspections and retest as specified above. D. Infrared Scanning: Two months after Substantial Completion, perform an infrared scan of transformer connections. 1. Use an infrared-scanning device designed to measure temperature or detect significant deviations from normal values. Provide documentation of device calibration. 2. Perform two follow-up infrared scans of transformers, one at four months and the other at 11 months after Substantial Completion. 3. Prepare a certified report identifying transformer checked and describing results of scanning. Include notation of deficiencies detected, remedial action taken, and scanning observations after remedial action. E. Test Labeling: On completion of satisfactory testing of each unit, attach a dated and signed "Satisfactory Test" label to tested component. 3.5 ADJUSTING A. Record transformer secondary voltage at each unit for at least 48 hours of typical occupancy period. Adjust transformer taps to provide optimum voltage conditions at secondary terminals. Optimum is defined as not exceeding nameplate voltage plus 5 percent and not being lower than nameplate voltage minus 3 percent at maximum load conditions. Submit recording and tap settings as test results. B. Output Settings Report: Prepare a written report recording output voltages and tap settings. July 2021 Project# 19.00305 262213-Page 8 3.6 CLEANING A. Vacuum dirt and debris; do not use compressed air to assist in cleaning. END OF SECTION 262213 July 2021 Project# 19.00305 262213- Page 9 THIS PAGE INTENTIONALLY LEFT BLANK SECTION 262416 PANELBOARDS PART 1 - GENERAL 1.1 RELATED DOCUMENTS A. Drawings and general provisions of the Contract, including General and Supplementary Conditions and Division 01 Specification Sections, apply to this Section. 1.2 SUMMARY A. Section Includes: 1. Distribution panelboards. 2. Lighting and appliance branch-circuit panelboards. 1.3 DEFINITIONS A. ATS: Acceptance testing specification. B. GFCI: Ground-fault circuit interrupter. C. GFEP: Ground-fault equipment protection. D. MCCB: Molded-case circuit breaker. E. SPD: Surge protective device. F. VPR: Voltage protection rating. 1.4 ACTION SUBMITTALS A. Product Data: For each type of panelboard. 1. Include materials, switching and overcurrent protective devices, SPDs, accessories, and components indicated. 2. Include dimensions and manufacturers' technical data on features, performance, electrical characteristics, ratings, and finishes. B. Shop Drawings: For each panelboard and related equipment. 1 . Include dimensioned plans, elevations, sections, and details. July 2021 Project# 19.00305 262416- Page 1 2. Show tabulations of installed devices with nameplates, conductor termination sizes, equipment features, and ratings. 3. Detail enclosure types including mounting and anchorage, environmental protection, knockouts, corner treatments, covers and doors, gaskets, hinges, and locks. 4. Detail bus configuration, current, and voltage ratings. 5. Short-circuit current rating of panelboards and overcurrent protective devices. 6. Include evidence of NRTL listing for SPD as installed in panelboard. 7. Detail features, characteristics, ratings, and factory settings of individual overcurrent protective devices and auxiliary components. 8. Include wiring diagrams for power, signal, and control wiring. 9. Key interlock scheme drawing and sequence of operations. 10. Include time-current coordination curves for each type and rating of overcurrent protective device included in panelboards. Include selectable ranges for each type of overcurrent protective device. Include an Internet link for electronic access to downloadable PDF of the coordination curves. 1.5 INFORMATIONAL SUBMITTALS A. Panelboard Schedules: For installation in panelboards. 1.6 CLOSEOUT SUBMITTALS A. Operation and Maintenance Data: For panelboards and components to include in emergency, operation, and maintenance manuals. In addition to items specified in Section 017823 "Operation and Maintenance Data," include the following: 1. Manufacturer's written instructions for testing and adjusting overcurrent protective devices. 2. Time-current curves, including selectable ranges for each type of overcurrent protective device that allows adjustments. 1.7 MAINTENANCE MATERIAL SUBMITTALS A. Furnish extra materials that match products installed and that are packaged with protective covering for storage and identified with labels describing contents. 1. Keys: Two spares for each type of panelboard cabinet lock. July 2021 Project#19.00305 262416-Page 2 1.8 QUALITY ASSURANCE A. Manufacturer Qualifications: ISO 9001 or ISO 9002 certified. 1.9 DELIVERY, STORAGE, AND HANDLING A. Remove loose packing and flammable materials from inside panelboards; install temporary electric heating (250 W per panelboard) to prevent condensation. B. Handle and prepare panelboards for installation according to NEMA PB 1. 1.10 FIELD CONDITIONS A. Environmental Limitations: 1 . Do not deliver or install panelboards until spaces are enclosed and weathertight, wet work in spaces is complete and dry, work above panelboards is complete, and temporary HVAC system is operating and maintaining ambient temperature and humidity conditions at occupancy levels during the remainder of the construction period. 2. Rate equipment for continuous operation under the following conditions unless otherwise indicated: a. Ambient Temperature: Not exceeding minus 22 deg F to plus 104 deg F. b. Altitude: Not exceeding 6600 feet. B. Service Conditions: NEMA PB 1 , usual service conditions, as follows: 1. Ambient temperatures within limits specified. 2. Altitude not exceeding 6600 feet. C. Interruption of Existing Electric Service: Do not interrupt electric service to facilities occupied by Owner or others unless permitted under the following conditions and then only after arranging to provide temporary electric service according to requirements indicated: 1 . Notify Owner no fewer than 14 days in advance of proposed interruption of electric service. 2. Do not proceed with interruption of electric service without Engineer's or Owner's written permission. 3. Comply with NFPA 70E. July 2021 Project# 19.00305 262416- Page 3 1.11 WARRANTY A. Manufacturer's Warranty: Manufacturer agrees to repair or replace panelboards that fail in materials or workmanship within specified warranty period. 1. Panelboard Warranty Period: 18 months from date of Substantial Completion. B. Special Warranty: Manufacturer's standard form in which manufacturer agrees to repair or replace SPD that fails in materials or workmanship within specified warranty period. 1 . SPD Warranty Period: Five years from date of Substantial Completion. PART 2 - PRODUCTS 2.1 PANELBOARDS AND LOAD CENTERS COMMON REQUIREMENTS A. Fabricate and test panelboards according to IEEE 344 to withstand seismic forces defined in Section 260548.16 "Seismic Controls for Electrical Systems." B. Product Selection for Restricted Space: Drawings indicate maximum dimensions for panelboards including clearances between panelboards and adjacent surfaces and other items. Comply with indicated maximum dimensions. C. Electrical Components, Devices, and Accessories: Listed and labeled as defined in NFPA 70, by a qualified testing agency, and marked for intended location and application. D. Comply with NEMA PB 1 . E. Comply with NFPA 70. F. Enclosures: Flush and Surface-mounted, dead-front cabinets. 1. Rated for environmental conditions at installed location. Provide ratings for panelboards as indicated below, unless noted otherwise. a. Indoor Dry and Clean Locations: NEMA 250, Type 1 . b. Outdoor Locations: NEMA 250, Type 4X, stainless steel.. c. Wash-Down Areas: NEMA 250, Type 4X, stainless steel. d. Indoor Locations Subject to Dust, Falling Dirt, and Dripping Noncorrosive Liquids: NEMA 250, Type 12. 2. Height: 84 inches maximum. July 2021 Project# 19.00305 262416- Page 4 3. Front: Secured to box with concealed trim clamps. For surface-mounted fronts, match box dimensions; for flush-mounted fronts, overlap box. Trims shall cover all live parts and shall have no exposed hardware. 4. Gutter Extension and Barrier: Same gage and finish as panelboard enclosure; integral with enclosure body. Arrange to isolate individual panel sections. 5. Finishes: a. Panels and Trim: Galvanized steel, factory finished immediately after cleaning and pretreating with manufacturer's standard two-coat, baked-on finish consisting of prime coat and thermosetting topcoat. b. Back Boxes: Same finish as panels and trim. G. Incoming Mains: 1. Location: As required for application, unless otherwise indicated. H. Phase, Neutral, and Ground Buses: 1. Material: Hard-drawn copper, 98 percent conductivity. a. Bus shall be fully rated the entire length. 2. Interiors shall be factory assembled into a unit. Replacing switching and protective devices shall not disturb adjacent units or require removing the main bus connectors. 3. Equipment Ground Bus: Adequate for feeder and branch-circuit equipment grounding conductors; bonded to box. 4. Full-Sized Neutral: Equipped with full-capacity bonding strap for service entrance applications. Mount electrically isolated from enclosure. Do not mount neutral bus in gutter. I. Conductor Connectors: Suitable for use with conductor material and sizes. 1. Material: Hard-drawn copper, 98 percent conductivity. 2. Terminations shall allow use of 75 deg C rated conductors without derating. 3. Size: Lugs suitable for indicated conductor sizes, with additional gutter space, if required, for larger conductors. 4. Main and Neutral Lugs: Compression type, with a lug on the neutral bar for each pole in the panelboard. 5. Ground Lugs and Bus-Configured Terminators: Compression type, with a lug on the bar for each pole in the panelboard. J. NRTL Label: Panelboards or load centers shall be labeled by an NRTL acceptable to authority having jurisdiction for use as service equipment with one or more main service disconnecting and overcurrent protective devices. July 2021 Project#19.00305 262416-Page 5 K. Future Devices: Panelboards shall have mounting brackets, bus connections, filler plates, and necessary appurtenances required for future installation of devices. 1. Percentage of Future Space Capacity: 25 percent. L. Panelboard Short-Circuit Current Rating: Fully rated to interrupt symmetrical short-circuit current available at terminals. Assembly listed by an NRTL for 100 percent interrupting capacity. 1 . Panelboards and overcurrent protective devices rated 240 V or less shall have short-circuit ratings as shown on Drawings, but not less than 10,000 A rms symmetrical. 2. Panelboards and overcurrent protective devices rated above 240 V and less than 600 V shall have short-circuit ratings as shown on Drawings, but not less than 14,000 A rms symmetrical. 2.2 PERFORMANCE REQUIREMENTS A. Seismic Performance: Panelboards shall withstand the effects of earthquake motions determined according to ASCE/SEI 7. 1 . The term "withstand" means "the unit will remain in place without separation of any parts from the device when subjected to the seismic forces specified." B. Surge Suppression: Factory installed as an integral part of indicated panelboards, complying with UL 1449 SPD Type 2. 2.3 POWER PANELBOARDS A. Manufacturers: Subject to compliance with requirements, provide products by one of the following: 1. ABB (Electrification Products Division). 2. Eaton. 3. Schneider Electric USA (Square D). B. Other Manufacturers: Other manufacturers will be considered if request for approval to supply products is received by the Engineer not later than fourteen days before the receipt of bids. Other approved manufacturers will be named by addendum prior to receipt of bids. C. Panelboards: NEMA PB 1, distribution type. July 2021 Project# 19.00305 262416- Page 6 D. Doors: Secured with vault-type latch with tumbler lock; keyed alike. 1 . For doors more than 36 inches high, provide two latches, keyed alike. E. Mains: Circuit breaker or Main Lugs only, as indicated. F. Branch Overcurrent Protective Devices for Circuit-Breaker Frame Sizes 125 A and Smaller: Bolt-on circuit breakers. G. Branch Overcurrent Protective Devices for Circuit-Breaker Frame Sizes Larger Than 125 A: Bolt-on circuit breakers. 2.4 LIGHTING AND APPLIANCE BRANCH-CIRCUIT PANELBOARDS A. Manufacturers: Subject to compliance with requirements, provide products by one of the following: 1. ABB (Electrification Products Division). 2. Eaton. 3. Schneider Electric USA (Square D). B. Other Manufacturers: Other manufacturers will be considered if request for approval to supply products is received by the Engineer not later than fourteen days before the receipt of bids. Other approved manufacturers will be named by addendum prior to receipt of bids. C. Panelboards: NEMA PB 1 , lighting and appliance branch-circuit type. D. Mains: Circuit breaker or Main Lugs only, as indicated. E. Branch Overcurrent Protective Devices: Bolt-on circuit breakers, replaceable without disturbing adjacent units. F. Doors: Concealed hinges; secured with flush latch with tumbler lock; keyed alike. 2.5 SURGE PROTECTION DEVICES (SPD'S) A. Peak Surge Current Rating: The minimum single-pulse surge current withstand rating per phase shall not be less than 100 kA. The peak surge current rating shall be the arithmetic sum of the ratings of the individual MOVs in a given mode. B. Protection modes and UL 1449 VPR for grounded wye circuits with 480Y/277 V, three-phase, four-wire circuits shall not exceed the following: July 2021 Project# 19.00305 262416- Page 7 1. Line to Neutral: 1200 V for 480Y/277 V. 2. Line to Ground: 1200 V for 480Y/277 V. 3. Neutral to Ground: 1200 V for 480Y/277 V. 4. Line to Line: 2000 V for 480Y/277 V. C. Protection modes and UL 1449 VPR for grounded wye circuits with 208Y/120 V, three-phase, four-wire circuits shall not exceed the following: 1. Line to Neutral: 700 V for 208Y/120 V. 2. Line to Ground: 700 V for 208Y/120 V. 3. Neutral to Ground: 700 V for 208Y/120 V. 4. Line to Line: 1200 V for 208Y/120 V. D. SCCR: Equal to the SCCR of the panelboard in which installed. E. Inominal Rating: 20 kA. 2.6 DISCONNECTING AND OVERCURRENT PROTECTIVE DEVICES A. MCCB: Comply with UL 489, with interrupting capacity to meet available fault currents. 1. Thermal-Magnetic Circuit Breakers: a. Inverse time-current element for low-level overloads. b. Instantaneous magnetic trip element for short circuits. c. Adjustable magnetic trip setting for circuit-breaker frame sizes 250 A and larger. 2. GFCI Circuit Breakers: Single- and double-pole configurations with Class A ground-fault protection (6-mA trip). 3. GFEP Circuit Breakers: Class B ground-fault protection (30-mA trip). 4. MCCB Features and Accessories: a. Standard frame sizes, trip ratings, and number of poles. b. Breaker handle indicates tripped status. c. UL listed for reverse connection without restrictive line or load ratings. d. Lugs: Mechanical style, suitable for number, size, trip ratings, and conductor materials. e. Application Listing: Appropriate for application. f. Ground-Fault Protection: Integrally mounted relay and trip unit with adjustable pickup and time-delay settings, push-to-test feature, and ground-fault indicator. g. Shunt Trip: 120-V trip coil energized from separate circuit, set to trip at 75 percent of rated voltage. July 2021 Project# 19.00305 262416-Page 8 h. Electronic Trip Unit: Three-pole breakers with ampere ratings greater than 150 amperes shall have electronic (LSIG) adjustable trip units with zone protective interlocking connections. i. Auxiliary Contacts: One, SPDT switch with "a" and "b" contacts; "a" contacts mimic circuit-breaker contacts and "b" contacts operate in reverse of circuit-breaker contacts. j. Key Interlock Kit: Externally mounted to prohibit circuit-breaker operation; key shall be removable only when circuit breaker is in off position. k. Zone-Selective Interlocking: Integral with electronic trip unit; for interlocking protection function with other upstream or downstream devices. I. Multipole units enclosed in a single housing with a single handle or factory assembled to operate as a single unit. m. Handle Padlocking Device: Fixed attachment, for locking circuit- breaker handle in on or off position. 2.7 IDENTIFICATION A. Panelboard Label: Manufacturer's name and trademark, voltage, amperage, number of phases, and number of poles shall be located on the interior of the panelboard door. B. Breaker Labels: Faceplate shall list current rating, UL and IEC certification standards, and AIC rating. C. Circuit Directory: Directory card inside panelboard door, mounted in metal frame with transparent protective cover. 1. Circuit directory shall identify specific purpose with detail sufficient to distinguish it from all other circuits. PART 3 - EXECUTION 3.1 EXAMINATION A. Verify actual conditions with field measurements prior to ordering panelboards to verify that equipment fits in allocated space in, and comply with, minimum required clearances specified in NFPA 70. B. Receive, inspect, handle, and store panelboards according to NEMA PB 1.1. C. Examine panelboards before installation. Reject panelboards that are damaged, rusted, or have been subjected to water saturation. July 2021 Project# 19.00305 262416- Page 9 D. Examine elements and surfaces to receive panelboards for compliance with installation tolerances and other conditions affecting performance of the Work. E. Proceed with installation only after unsatisfactory conditions have been corrected. 3.2 INSTALLATION A. Coordinate layout and installation of panelboards and components with other construction that penetrates walls or is supported by them, including electrical and other types of equipment, raceways, piping, encumbrances to workspace clearance requirements, and adjacent surfaces. Maintain required workspace clearances and required clearances for equipment access doors and panels. B. Comply with NECA 1. C. Install panelboards and accessories according to NEMA PB 1.1. D. Equipment Mounting: 1. For panelboards with ratings greater than 800 A, install on cast-in-place concrete equipment base(s). Comply with requirements for equipment bases and foundations specified in Section 033000 "Cast-in-Place Concrete." 2. For both floor and wall mounted panelboards, attach to the vertical finished or structural surface behind the panelboard. 3. Comply with requirements for seismic control devices specified in Section 260548.16 "Seismic Controls for Electrical Systems." E. Temporary Lifting Provisions: Remove temporary lifting eyes, channels, and brackets and temporary blocking of moving parts from panelboards. F. Comply with mounting and anchoring requirements specified in Section 260548.16 "Seismic Controls for Electrical Systems." G. Mount top of trim 90 inches above finished floor unless otherwise indicated. H. Mount panelboard cabinet plumb and rigid without distortion of box. I. Mount surface-mounted panelboards to steel slotted supports 5/8 inch in depth. Orient steel slotted supports vertically. J. Install overcurrent protective devices and controllers not already factory installed. 1. Set field-adjustable, circuit-breaker trip ranges. July 2021 Project#19.00305 262416-Page 10 2. Tighten bolted connections and circuit breaker connections using calibrated torque wrench or torque screwdriver per manufacturer's written instructions. K. Make grounding connections and bond neutral for services and separately derived systems to ground. Make connections to grounding electrodes, separate grounds for isolated ground bars, and connections to separate ground bars. L. Install filler plates in unused spaces. M. Stub four 1-inch empty conduits from panelboard into accessible ceiling space or space designated to be ceiling space in the future. N. Arrange conductors in gutters into groups and bundle and wrap with wire ties. 3.3 IDENTIFICATION A. Identify field-installed conductors, interconnecting wiring, and components; install warning signs complying with requirements in Section 260553 "Identification for Electrical Systems." B. Create a directory to indicate installed circuit loads; incorporate Owner's final room designations. Obtain approval before installing. Handwritten directories are not acceptable. Install directory inside panelboard door. C. Panelboard Nameplates: Label each panelboard with a nameplate complying with requirements for identification specified in Section 260553 "Identification for Electrical Systems." D. Install warning signs complying with requirements in Section 260553 "Identification for Electrical Systems" identifying source of remote circuit. 3.4 FIELD QUALITY CONTROL A. Perform tests and inspections. B. Acceptance Testing Preparation: 1. Test insulation resistance for each panelboard bus, component, connecting supply, feeder, and control circuit. 2. Test continuity of each circuit. C. Tests and Inspections: 1. Perform each visual and mechanical inspection and electrical test for low- voltage air circuit breakers and low-voltage surge arrestors stated in July 2021 Project#19.00305 262416-Page 11 NETA ATS, Paragraph 7.6 Circuit Breakers and Paragraph 7.19.1 Surge Arrestors, Low-Voltage. Certify compliance with test parameters. 2. Correct malfunctioning units on-site, where possible, and retest to demonstrate compliance; otherwise, replace with new units and retest. 3. Perform the following infrared scan tests and inspections and prepare reports: a. Initial Infrared Scanning: After Substantial Completion, but not more than 60 days after Final Acceptance, perform an infrared scan of each panelboard. Remove front panels so joints and connections are accessible to portable scanner. b. Follow-up Infrared Scanning: Perform an additional follow-up infrared scan of each panelboard 11 months after date of Substantial Completion. c. Instruments and Equipment: 1) Use an infrared scanning device designed to measure temperature or to detect significant deviations from normal values. Provide calibration record for device. D. Panelboards will be considered defective if they do not pass tests and inspections. E. Prepare test and inspection reports, including a certified report that identifies panelboards included and that describes scanning results, with comparisons of the two scans. Include notation of deficiencies detected, remedial action taken, and observations after remedial action. 3.5 ADJUSTING A. Adjust moving parts and operable components to function smoothly, and lubricate as recommended by manufacturer. B. Set field-adjustable circuit-breaker trip ranges as indicated. 3.6 PROTECTION A. Temporary Heating: Prior to energizing panelboards, apply temporary heat to maintain temperature according to manufacturer's written instructions. END OF SECTION 262416 July 2021 Project# 19.00305 262416- Page 12 SECTION 262816 ENCLOSED SWITCHES AND CIRCUIT BREAKERS PART 1 - GENERAL 1.1 RELATED DOCUMENTS A. Drawings and general provisions of the Contract, including General and Supplementary Conditions and other Division 01 Specification Sections, apply to this Section. 1.2 SUMMARY A. Section Includes: 1. Fusible switches. 2. Nonfusible switches. 3. Molded-case circuit breakers (MCCBs). 4. Enclosures. 1.3 DEFINITIONS A. NC: Normally closed. B. NO: Normally open. C. SPDT: Single pole, double throw. 1.4 ACTION SUBMITTALS A. Product Data: For each type of enclosed switch, circuit breaker, accessory, and component indicated. Include nameplate ratings, dimensioned elevations, sections, weights, and manufacturers' technical data on features, performance, electrical characteristics, ratings, accessories, and finishes. 1. Enclosure types and details for types other than NEMA 250, Type 1. 2. Current and voltage ratings. 3. Short-circuit current ratings (interrupting and withstand, as appropriate). 4. Detail features, characteristics, ratings, and factory settings of individual overcurrent protective devices, accessories, and auxiliary components. 5. Include time-current coordination curves (average melt) for each type and rating of overcurrent protective device; include selectable ranges for each type of overcurrent protective device. Provide in PDF electronic format. B. Shop Drawings: For enclosed switches and circuit breakers. July 2021 Project#19.00305 262816-Page 1 1. Include plans, elevations, sections, details, and attachments to other work. 2. Include wiring diagrams for power, signal, and control wiring. 1.5 INFORMATIONAL SUBMITTALS A. Seismic Qualification Data: Certificates, for enclosed switches and circuit breakers, accessories, and components, from manufacturer. 1. Basis for Certification: Indicate whether withstand certification is based on actual test of assembled components or on calculation. 2. Dimensioned Outline Drawings of Equipment Unit: Identify center of gravity and locate and describe mounting and anchorage provisions. 3. Detailed description of equipment anchorage devices on which the certification is based and their installation requirements. B. Field quality-control reports. 1.6 CLOSEOUT SUBMITTALS A. Operation and Maintenance Data: For enclosed switches and circuit breakers to include in emergency, operation, and maintenance manuals. 1. In addition to items specified in Section 017823 "Operation and Maintenance Data," include the following: a. Manufacturer's written instructions for testing and adjusting enclosed switches and circuit breakers. b. Time-current coordination curves (average melt) for each type and rating of overcurrent protective device; include selectable ranges for each type of overcurrent protective device. Provide in PDF electronic format. 1.7 MAINTENANCE MATERIAL SUBMITTALS A. Furnish extra materials that match products installed and that are packaged with protective covering for storage and identified with labels describing contents. 1. Fuses: Equal to 10 percent of quantity installed for each size and type, but no fewer than three of each size and type. 2. Fuse Pullers: Two for each size and type. July 2021 Project# 19.00305 262816-Page 2 1.8 FIELD CONDITIONS A. Environmental Limitations: Rate equipment for continuous operation under the following conditions unless otherwise indicated: 1. Ambient Temperature: Not less than minus 22 deg F and not exceeding 104 deg F. 2. Altitude: Not exceeding 6600 feet. 1.9 WARRANTY A. Manufacturer's Warranty: Manufacturer and Installer agree to repair or replace components that fail in materials or workmanship within specified warranty period. 1. Warranty Period: One year(s) from date of Substantial Completion. PART 2 - PRODUCTS 2.1 PERFORMANCE REQUIREMENTS A. Seismic Performance: Enclosed switches and circuit breakers shall withstand the effects of earthquake motions determined according to ASCE/SEI 7. 1. The term "withstand" means "the unit will remain in place without separation of any parts from the device when subjected to the seismic forces specified and the unit will be fully operational after the seismic event." 2.2 GENERAL REQUIREMENTS A. Source Limitations: Obtain enclosed switches and circuit breakers, overcurrent protective devices, components, and accessories, within same product category, from single manufacturer. B. Product Selection for Restricted Space: Drawings indicate maximum dimensions for enclosed switches and circuit breakers, including clearances between enclosures, and adjacent surfaces and other items. Comply with indicated maximum dimensions. C. Electrical Components, Devices, and Accessories: Listed and labeled as defined in NFPA 70, by an NRTL, and marked for intended location and application. D. Comply with NFPA 70. July 2021 Project# 19.00305 262816- Page 3 2.3 FUSIBLE SWITCHES A. Manufacturers: Subject to compliance with requirements, provide products by one of the following: 1. ABB (Electrification Products Division). 2. Eaton. 3. Schneider Electric USA (Square D). B. Other Manufacturers: Other manufacturers will be considered if request for approval to supply products is received by the Engineer not later than fourteen days before the receipt of bids. Other approved manufacturers will be named by addendum prior to receipt of bids. C. Type HD, Heavy Duty: 1. Single or Double throw, as indicated. 2. Three pole. 3. 240 or 600-V ac, as indicated or required for the application. 4. 1200 A and smaller. 5. UL 98 and NEMA KS 1, horsepower rated, with clips or bolt pads to accommodate indicated fuses. 6. Lockable handle with capability to accept three padlocks, and interlocked with cover in closed position. D. Accessories: 1. Equipment Ground Kit: Internally mounted and labeled for copper and aluminum ground conductors. 2. Neutral Kit: Internally mounted; insulated, capable of being grounded and bonded; labeled for copper and aluminum neutral conductors. 3. Class R Fuse Kit: Provides rejection of other fuse types when Class R fuses are specified. 4. Auxiliary Contact Kit, where indiated: One NO/NC (Form "C") auxiliary contact(s), arranged to activate before switch blades open. Contact rating - 120-V ac. 5. Lugs: Compression type, suitable for number, size, and conductor material. 6. Service-Rated Switches: Labeled for use as service equipment, where indicated or required for the application. 2.4 NONFUSIBLE SWITCHES A. Manufacturers: Subject to compliance with requirements, provide products by one of the following: 1. ABB (Electrification Products Division). July 2021 Project# 19.00305 262816- Page 4 2. Eaton. 3. Schneider Electric USA (Square D). B. Other Manufacturers: Other manufacturers will be considered if request for approval to supply products is received by the Engineer not later than fourteen days before the receipt of bids. Other approved manufacturers will be named by addendum prior to receipt of bids. C. Type HD, Heavy Duty, Three Pole, Single Throw, 240 or 600-V ac (as indicated), 1200 A and Smaller: UL 98 and NEMA KS 1, horsepower rated, lockable handle with capability to accept three padlocks, and interlocked with cover in closed position. D. Accessories: 1. Equipment Ground Kit: Internally mounted and labeled for copper and aluminum ground conductors. 2. Neutral Kit: Internally mounted; insulated, capable of being grounded and bonded; labeled for copper and aluminum neutral conductors. 3. Class R Fuse Kit: Provides rejection of other fuse types when Class R fuses are specified. 4. Auxiliary Contact Kit, where indicated: One NO/NC (Form "C") auxiliary contact(s), arranged to activate before switch blades open. Contact rating - 120-V ac. 5. Lugs: Compression type, suitable for number, size, and conductor material. 2.5 MOLDED-CASE CIRCUIT BREAKERS A. Manufacturers: Subject to compliance with requirements, provide products by one of the following: 1. ABB (Electrification Products Division). 2. Eaton. 3. Schneider Electric USA (Square D). B. Other Manufacturers: Other manufacturers will be considered if request for approval to supply products is received by the Engineer not later than fourteen days before the receipt of bids. Other approved manufacturers will be named by addendum prior to receipt of bids. C. Circuit breakers shall be constructed using glass-reinforced insulating material. Current carrying components shall be completely isolated from the handle and the accessory mounting area. D. Circuit breakers shall have a toggle operating mechanism with common tripping of all poles, which provides quick-make, quick-break contact action. The circuit- July 2021 Project# 19.00305 262816-Page 5 breaker handle shall be over center, be trip free, and reside in a tripped position between on and off to provide local trip indication. Circuit-breaker escutcheon shall be clearly marked on and off in addition to providing international I/O markings. Equip circuit breaker with a push-to-trip button, located on the face of the circuit breaker to mechanically operate the circuit-breaker tripping mechanism for maintenance and testing purposes. E. The maximum ampere rating and UL, IEC, or other certification standards with applicable voltage systems and corresponding interrupting ratings shall be clearly marked on face of circuit breaker. Circuit breakers shall be 100 percent rated. F. MCCBs shall be equipped with a device for locking in the isolated position. G. Lugs shall be suitable for 167 deg F rated wire. H. Standard: Comply with UL 489 with interrupting capacity to comply with available fault currents. I. Thermal-Magnetic Circuit Breakers: Inverse time-current thermal element for low-level overloads and instantaneous magnetic trip element for short circuits. J. Electronic Trip Circuit Breakers: Provide electronic trip unit for circuit-breakers for sizes larger than 150 A or, for lower ratings, where specifically indicated on the drawings. Trip units shall be equipped with zone protective interlocking connections. Field-replaceable rating plug, rms sensing, with the following field- adjustable settings: 1. Instantaneous trip. 2. Long- and short-time pickup levels. 3. Long- and short-time time adjustments. 4. Ground-fault pickup level, time delay, and I-squared t response. K. Ground-Fault Circuit-Interrupter (GFCI) Circuit Breakers: Single- and two-pole configurations with Class A ground-fault protection (6-mA trip). L. Ground-Fault Equipment-Protection (GFEP) Circuit Breakers: With Class B ground-fault protection (30-mA trip). M. Features and Accessories: 1. Standard frame sizes, trip ratings, and number of poles. 2. Lugs: Compression type, suitable for number, size, trip ratings, and conductor material. 3. Ground-Fault Protection: Comply with UL 1053; integrally mounted, self- powered type with mechanical ground-fault indicator; relay with adjustable pickup and time-delay settings, push-to-test feature, internal memory, and July 2021 Project#19.00305 262816-Page 6 a- shunt trip unit; and three-phase, zero-sequence current transformer/sensor. 4. Communication Capability: Universal-mounted communication module with functions and features compatible with power monitoring and control system, specified in Section 260913 "Electrical Power Monitoring and Control." 5. Shunt Trip: Trip coil energized from separate circuit, with coil-clearing contact. 6. Auxiliary Contacts: One SPDT switch with "a" and "b" contacts; "a" contacts mimic circuit-breaker contacts, "b" contacts operate in reverse of circuit-breaker contacts. 7. Key Interlock Kit: Externally mounted to prohibit circuit-breaker operation; key shall be removable only when circuit breaker is in off position. 8. Zone-Selective Interlocking: Integral with electronic trip unit; for interlocking ground-fault protection function. 2.6 ENCLOSURES A. Enclosed Switches and Circuit Breakers: UL 489, NEMA KS 1, NEMA 250, and UL 50, to comply with environmental conditions at installed location. B. Enclosure Finish: The enclosure shall be finished with gray baked enamel paint, electrodeposited on cleaned, phosphatized steel (NEMA 250 Type 1); gray baked enamel paint, electrodeposited on cleaned, phosphatized galvannealed steel (NEMA 250 Types 3R, 12); a brush finish on Type 304 stainless steel (NEMA 250 Type 4-4X stainless steel); or copper-free cast aluminum alloy (NEMA 250 Types 7, 9). C. Conduit Entry: NEMA 250 Types 4, 4X, and 12 enclosures shall contain no knockouts. NEMA 250 Types 7 and 9 enclosures shall be provided with threaded conduit openings in both endwalls. D. Operating Mechanism: The circuit-breaker operating handle shall be externally operable with the operating mechanism being an integral part of the box, not the cover. The cover interlock mechanism shall have an externally operated override. The override shall not permanently disable the interlock mechanism, which shall return to the locked position once the override is released. The tool used to override the cover interlock mechanism shall not be required to enter the enclosure in order to override the interlock. E. Enclosures designated as NEMA 250 Type 4, 4X stainless steel, 12, or 12K shall have a dual cover interlock mechanism to prevent unintentional opening of the enclosure cover when the circuit breaker is ON and to prevent turning the circuit breaker ON when the enclosure cover is open. F. NEMA 250 Type 7/9 enclosures shall be furnished with a breather and drain kit to allow their use in outdoor and wet location applications. July 2021 Project#19.00305 262816- Page 7 PART 3 - EXECUTION 3.1 EXAMINATION A. Examine elements and surfaces to receive enclosed switches and circuit breakers for compliance with installation tolerances and other conditions affecting performance of the Work. B. Proceed with installation only after unsatisfactory conditions have been corrected. 1. Commencement of work shall indicate Installer's acceptance of the areas and conditions as satisfactory. 3.2 PREPARATION A. Interruption of Existing Electric Service: Do not interrupt electric service to facilities occupied by Owner or others unless permitted under the following conditions and then only after arranging to provide temporary electric service according to requirements indicated: 1. Notify Owner no fewer than 14 days in advance of proposed interruption of electric service. 2. Indicate method of providing temporary electric service. 3. Do not proceed with interruption of electric service without Engineer's or Owner's written permission. 4. Comply with NFPA 70E. 3.3 ENCLOSURE ENVIRONMENTAL RATING APPLICATIONS A. Enclosed Switches and Circuit Breakers: Provide enclosures at installed locations with the following environmental ratings. 1. Indoor Dry and Clean Locations: NEMA 250, Type 1. 2. Outdoor Locations: NEMA 250, Type 4X, stainless steel.. 3. Wash-Down Areas: NEMA 250, Type 4X, stainless steel. 4. Other Wet or Damp Indoor Locations: NEMA 250, Type 4X, stainless steel. 5. Indoor Locations Subject to Dust, Falling Dirt, and Dripping Noncorrosive Liquids: NEMA 250, Type 12. 6. Indoor Hazardous Areas Indicated on Drawings: NEMA 250, Type 7 with cover attached by Type 316 stainless steel bolts. 7. Outdoor Hazardous Areas Indicated on Drawings: NEMA 250, Type 8 with cover attached by Type 316 stainless steel bolts. July 2021 Project#19.00305 262816-Page 8 3.4 INSTALLATION A. Coordinate layout and installation of switches, circuit breakers, and components with equipment served and adjacent surfaces. Maintain required workspace clearances and required clearances for equipment access doors and panels. B. Install individual wall-mounted switches and circuit breakers with tops at uniform height unless otherwise indicated. C. Comply with mounting and anchoring requirements specified in Section 260548.16 "Seismic Controls for Electrical Systems." D. Temporary Lifting Provisions: Remove temporary lifting of eyes, channels, and brackets and temporary blocking of moving parts from enclosures and components. E. Install fuses in fusible devices. F. Comply with NFPA 70 and NECA 1. 3.5 IDENTIFICATION A. Comply with requirements in Section 260553 "Identification for Electrical Systems." 1. Identify field-installed conductors, interconnecting wiring, and components; provide warning signs. 2. Label each enclosure with laminated-plastic nameplate. 3.6 FIELD QUALITY CONTROL A. Manufacturer's Field Service: Engage a factory-authorized service representative to test and inspect components, assemblies, and equipment installations, including connections. B. Perform tests and inspections with the assistance of a factory-authorized service representative. C. Tests and Inspections for Switches: 1. Visual and Mechanical Inspection: a. Inspect physical and mechanical condition. b. Inspect anchorage, alignment, grounding, and clearances. c. Verify that the unit is clean. d. Verify blade alignment, blade penetration, travel stops, and mechanical operation. July 2021 Project# 19.00305 262816- Page 9 e. Verify that fuse sizes and types match the Specifications and Drawings. f. Verify that each fuse has adequate mechanical support and contact integrity. g. Inspect bolted electrical connections for high resistance using one of the two following methods: 1) Use a low-resistance ohmmeter. a) Compare bolted connection resistance values to values of similar connections. Investigate values that deviate from those of similar bolted connections by more than 50 percent of the lowest value. 2) Verify tightness of accessible bolted electrical connections by calibrated torque-wrench method in accordance with manufacturer's published data or NETA ATS Table 100.12. a) Bolt-torque levels shall be in accordance with manufacturer's published data. In the absence of manufacturer's published data, use NETA ATS Table 100.12. h. Verify that operation and sequencing of interlocking systems is as described in the Specifications and shown on the Drawings. i. Verify correct phase barrier installation. j. Verify lubrication of moving current-carrying parts and moving and sliding surfaces. 2. Electrical Tests: a. Perform resistance measurements through bolted connections with a low-resistance ohmmeter. Compare bolted connection resistance values to values of similar connections. Investigate values that deviate from adjacent poles or similar switches by more than 50 percent of the lowest value. b. Measure contact resistance across each switchblade fuseholder. Drop values shall not exceed the high level of the manufacturer's published data. If manufacturer's published data are not available, investigate values that deviate from adjacent poles or similar switches by more than 50 percent of the lowest value. c. Perform insulation-resistance tests for one minute on each pole, phase-to-phase and phase-to-ground with switch closed, and across each open pole. Apply voltage in accordance with manufacturer's published data. In the absence of manufacturer's published data, use Table 100.1 from the NETA ATS. Investigate values of insulation July 2021 Project#19.00305 262816- Page 10 resistance less than those published in Table 100.1 or as recommended in manufacturer's published data. d. Measure fuse resistance. Investigate fuse-resistance values that deviate from each other by more than 15 percent. e. Perform ground fault test according to NETA ATS 7.14 "Ground Fault Protection Systems, Low-Voltage." D. Tests and Inspections for Molded Case Circuit Breakers: 1 . Visual and Mechanical Inspection: a. Verify that equipment nameplate data are as described in the Specifications and shown on the Drawings. b. Inspect physical and mechanical condition. c. Inspect anchorage, alignment, grounding, and clearances. d. Verify that the unit is clean. e. Operate the circuit breaker to ensure smooth operation. f. Inspect bolted electrical connections for high resistance using one of the two following methods: 1) Use a low-resistance ohmmeter. a) Compare bolted connection resistance values to values of similar connections. Investigate values that deviate from those of similar bolted connections by more than 50 percent of the lowest value. 2) Verify tightness of accessible bolted electrical connections by calibrated torque-wrench method in accordance with manufacturer's published data or NETA ATS Table 100.12. a) Bolt-torque levels shall be in accordance with manufacturer's published data. In the absence of manufacturer's published data, use NETA ATS Table 100.12. g. Inspect operating mechanism, contacts, and chutes in unsealed units. h. Perform adjustments for final protective device settings as indicated. 2. Electrical Tests: a. Perform resistance measurements through bolted connections with a low-resistance ohmmeter. Compare bolted connection resistance values to values of similar connections. Investigate values that deviate from adjacent poles or similar switches by more than 50 percent of the lowest value. July 2021 Project# 19.00305 262816- Page 11 b. Perform insulation-resistance tests for one minute on each pole, phase-to-phase and phase-to-ground with circuit breaker closed, and across each open pole. Apply voltage in accordance with manufacturer's published data. In the absence of manufacturer's published data, use Table 100.1 from the NETA ATS. Investigate values of insulation resistance less than those published in Table 100.1 or as recommended in manufacturer's published data. c. Perform a contact/pole resistance test. Drop values shall not exceed the high level of the manufacturer's published data. If manufacturer's published data are not available, investigate values that deviate from adjacent poles or similar switches by more than 50 percent of the lowest value. d. Perform insulation resistance tests on all control wiring with respect to ground. Applied potential shall be 500-V dc for 300-V rated cable and 1000-V dc for 600-V rated cable. Test duration shall be one minute. For units with solid state components, follow manufacturer's recommendation. Insulation resistance values shall be no less than two megohms. e. Determine the following by primary current injection: 1) Long-time pickup and delay. Pickup values shall be as specified. Trip characteristics shall not exceed manufacturer's published time-current characteristic tolerance band, including adjustment factors. 2) Short-time pickup and delay. Short-time pickup values shall be as specified. Trip characteristics shall not exceed manufacturer's published time-current characteristic tolerance band, including adjustment factors. 3) Ground-fault pickup and time delay. Ground-fault pickup values shall be as specified. Trip characteristics shall not exceed manufacturer's published time-current characteristic tolerance band, including adjustment factors. 4) Instantaneous pickup. Instantaneous pickup values shall be as specified and within manufacturer's published tolerances. f. Test functionality of the trip unit by means of primary current injection. Pickup values and trip characteristics shall be as specified and within manufacturer's published tolerances. g. Perform minimum pickup voltage tests on shunt trip and close coils in accordance with manufacturer's published data. Minimum pickup voltage of the shunt trip and close coils shall be as indicated by manufacturer. h. Verify correct operation of auxiliary features such as trip and pickup indicators; zone interlocking; electrical close and trip operation; trip- free, anti-pump function; and trip unit battery condition. Reset all trip logs and indicators. Investigate units that do not function as designed. July 2021 Project# 19.00305 262816-Page 12 i. Verify operation of charging mechanism. Investigate units that do not function as designed. 3. Correct malfunctioning units on-site, where possible, and retest to demonstrate compliance; otherwise, replace with new units and retest. 4. Perform the following infrared scan tests and inspections and prepare reports: a. Initial Infrared Scanning: After Substantial Completion, but not more than 60 days after Final Acceptance, perform an infrared scan of each enclosed switch and circuit breaker. Remove front panels so joints and connections are accessible to portable scanner. b. Follow-up Infrared Scanning: Perform an additional follow-up infrared scan of each enclosed switch and circuit breaker 11 months after date of Substantial Completion. c. Instruments and Equipment: Use an infrared scanning device designed to measure temperature or to detect significant deviations from normal values. Provide calibration record for device. 5. Test and adjust controls, remote monitoring, and safeties. Replace damaged and malfunctioning controls and equipment. E. Enclosed switches and circuit breakers will be considered defective if they do not pass tests and inspections. F. Prepare test and inspection reports. 1. Test procedures used. 2. Include identification of each enclosed switch and circuit breaker tested and describe test results. 3. List deficiencies detected, remedial action taken, and observations after remedial action. 3.7 ADJUSTING A. Adjust moving parts and operable components to function smoothly and lubricate as recommended by manufacturer. B. Set field-adjustable circuit-breaker trip ranges to values as indicated. END OF SECTION 262816 July 2021 Project#19.00305 262816-Page 13 THIS PAGE INTENTIONALLY LEFT BLANK SECTION 312300 EXCAVATION AND BACKFILL PART 1: GENERAL 1.1 SCOPE OF WORK A. General: 1. The work covered by this section shall consist of furnishing all materials, labor, equipment and services for the excavation and backfill at all areas within the limits of the project. Work is limited to the areas of construction and includes (but is not necessarily limited to) stockpiling of topsoil, site grading, excavation of footings and trenches, filling, backfilling, compaction, finish grading, spreading of topsoil, disposal of waste material, and proof rolling. 2. Perform all excavation, dewatering, sheeting, bracing, and backfilling in such a manner as to eliminate all possibility of undermining or disturbing the foundations of existing structures. 3. Requirements of the General and Supplemental Conditions apply to all work in this section. Provide all labor, materials, equipment, and services indicated on the drawings, or specified herein, or reasonably necessary for or incidental to a complete job. 4. Excavations shall provide adequate working space and clearances for the work to be performed therein and for installation and removal of concrete forms. In no case shall excavation faces be undercut for extended footings. 5. Subgrade surfaces shall be clean and free of loose material of any kind when concrete is placed thereon. 6. Backfilling during freezing weather shall not be done except by permission of the Engineer. No backfill, fill, or embankment materials shall be installed on frozen surfaces, nor shall frozen materials, snow, or ice be placed in any backfill, fill, or embankment. 1.2 SYSTEM DESCRIPTION A. Excavation, General: Excavation consists of the removal and disposal of all materials encountered for footings, foundations, pipework, and other construction as shown on the drawings. Perform all excavation work in compliance with applicable requirements of governing authorities having jurisdiction. 1.3 QUALITY ASSURANCE A. Referenced Standards: Unless otherwise indicated, all referenced standards shall be the latest edition available at the time of bidding. Any requirements of July 2021 Project#19.00305 312300-Page 1 these specifications shall in no way invalidate the minimum requirements of the referenced standards. Comply with the provisions of the following codes and standards, except as otherwise shown or specified. 1. ASTM C33: Standard Specifications for Concrete Aggregate 2. ASTM D698: Standard Test Methods for Moisture-Density Relations of Soils and Soil-Aggregate Mixtures Using 5.5 lb. Rammer and 12" Drop. 3. ASTM D3282: Standard Recommended Practice for Classification of Soils and Soil-Aggregate Mixtures for Highway Construction Purposes. 4. Standard Specifications for Roads and Structures, North Carolina Department of Transportation, March 1, 2006 edition. 5. Erosion and Sediment Control Planning and Design Manual. B. Unauthorized Excavation: Except where otherwise authorized, indicated, or specified, all materials excavated below the bottom of concrete walls, footings, slabs on grade, and foundations shall be replaced, by and at the expense of the Contractor, with concrete placed at the same time and monolithic with the concrete above. C. Existing Utilities: 1. Locate existing underground utilities in the area of work. If utilities are to remain in place, provide adequate means of protection during earthwork operations. 2. Should uncharted or incorrectly charted piping or other utilities be encountered during excavation, consult the Engineer immediately for directions as to procedure. Cooperate with Owner and utility companies in keeping respective services and facilities in operation. Repair damaged utilities to the satisfaction of utility companies. 1.4 SITE CONDITIONS A. Site Information: No test borings or related subsurface information is available for the project area. Test borings and other exploratory operations may be undertaken by the Contractor at his own expense provided such operations are acceptable to the Owner. PART 2: PRODUCTS 2.1 MATERIALS A. Classification of Excavated Materials: Classification of excavated materials will be made as follows: 1. All materials excavated for this project, regardless of its nature or composition shall be classified as Unclassified Excavation, and shall be July 2021 Project#19.00305 312300-Page 2 part of the lump sum price. No separate payment will be made for the excavation of rock or any unsuitable materials. B. Classification of Other Materials: 1. Satisfactory Subqrade Soil Materials: Soils complying with ASTM D 3282, soil classification Groups A-I, A-2-4, A-2-5, and A-3. 2. Unsatisfactory Subgrade Soil Materials: Soils described in ASTM D 3282, soil classification groups A-2-6, A-2-7, A-4, A-5, A-6, and A-7; also peat and other highly organic soils, unless otherwise acceptable to the Engineer. 3. Cohesionless Soil Materials: Gravels, sand-gravel mixtures, sands, and gravelly-sands. 4. Cohesive Soil Materials: Clayey and silty gravels, sand-clay mixtures, gravel-silt mixtures, clayey and silty sands, sand-silt mixtures, clays, silts, and very fine sands. 5. Backfill and Fill Materials: Provide satisfactory soil materials for backfill and fill, free of masonry, rock, or gravel larger than 4" in any dimension, and free of metal, gypsum, lime, debris, waste, frozen materials, vegetable, and other deleterious matter. Use only excavated material that has been sampled, tested, and certified as satisfactory soil material. 6. Select Backfill: Select backfill is defined as backfill and fill material that is transported to the site from outside the project limits, and which meets the soil requirements specified above under "Backfill and Fill Materials." Material excavated in conjunction with the construction of this project cannot be considered as "select backfill" for payment purposes. 7. Pipe Bedding: Crushed stone or crushed gravel meeting the requirements of ASTM C 33, Gradation 67. 8. Inundated Sand: Sand for inundated sand backfill shall be clean with not more than 25% retained on a No. 4 sieve and not more than 7% passing a No. 200 sieve and shall have an effective size between 0.10 mm and 0.30 mm. Sand shall be deposited in, or placed simultaneously with application of, water so that the sand shall be compacted by a mechanical probe type vibrator. Inundated sand shall be compacted to 70% relative density as determined by ASTM D4253 and D4254. 9. Graded Gravel: Gravel for compacted backfill shall conform to the following gradation: Sieve Size Percent Passing by Weight 1" 100 3/4" 85 - 100 3/8" 50 - 80 No. 4 35 - 60 No. 40 15 - 30 No. 200 05 - 10 July 2021 Project#19.00305 312300-Page 3 The gravel mixture shall contain no clay lumps or organic matters. The fraction passing the No. 4 sieve shall have a liquid limit not greater than 25 and a plasticity index not greater than 5. Gravel backfill shall be deposited in uniform layers not exceeding 12" in uncompacted thickness. The backfill shall be compacted by a suitable vibratory roller or platform vibrator to not less than 70% relative density as determined by ASTM D4253 and D4254. 2.2 EQUIPMENT A. Mechanical Excavation: 1. The use of mechanical equipment will not be permitted in locations where its operation would cause damage to trees, buildings, culverts, or other existing property, utilities, or structures above or below ground. In all such locations, hand excavating methods shall be used. 2. Mechanical equipment used for trench excavation shall be of a type, design, and construction and shall be controlled, that uniform trench widths and vertical sidewalls are obtained at least from an elevation one foot above the top of the installed pipe to the bottom of the trench, and that trench alignment is such that pipe when accurately laid to specified alignment will be centered in the trench with adequate clearance between the pipe and sidewalls of the trench. Undercutting the trench sidewall to obtain clearance will not be permitted. PART 3: EXECUTION 3.1 PREPARATION A. Dewatering: 1. The Contractor shall provide and maintain adequate dewatering equipment to remove and dispose of all surface water and groundwater entering excavations, trenches, or other parts of the work. Each excavation shall be kept dry during subgrade preparation and continually thereafter until the structure to be built, or the pipe to be installed therein, is completed to the extent that no damage from hydrostatic pressure, flotation, or other cause will result. 2. All excavations for concrete structures or trenches that extend down to or below groundwater shall be dewatered by lowering and keeping the groundwater level beneath such excavations 12" or more below the bottom of the excavation. 3. Surface water shall be diverted or otherwise prevented from entering excavated areas or trenches without causing damage to adjacent property. July 2021 Project#19.00305 312300-Page 4 4. The Contractor is responsible for obtaining any required permits or permissions necessary for the disposal of groundwater that is removed. Any discharged groundwater shall be clean and free of sediment. 5. The Contractor shall be responsible for the condition of any pipe or conduit which he may use for drainage purposes, and all such pipes or conduits which he may use for drainage purposes, and all such pipes or conduits shall be left clean and free of sediment. 6. Where trench sheeting is left in place, such sheeting shall not be braced against the pipe, but shall be supported in a manner which will preclude concentrated loads or horizontal thrusts on the pipe. Cross braces installed above the pipe to support sheeting may be removed after pipe embedment has been completed. B. Stabilization: 1. Subgrades for concrete structures and trench bottoms shall be firm, dense, and thoroughly compacted and consolidated; free from mud and muck; and sufficiently stable to remain firm and intact under the feet of the workmen. 2. Subgrades for concrete structures or trench bottoms, which are otherwise solid but which become mucky on top due to construction operations, shall be reinforced with one or more layers of crushed rock or gravel. The stabilizing material shall be spread and compacted to a depth of not less than 6" below the bottom of the structure or pipe. Not more than 1/2" depth of mud or muck shall be allowed to remain on stabilized trench bottoms when the pipe bedding material is placed thereon. The finished elevation of stabilized subgrades for concrete structures shall not be above subgrade elevations indicated on the drawings. C. Cutting Concrete or Asphalt Surface Construction: 1. All pavement cutting and repair shall be done in accordance with local ordinances. Cuts in concrete and asphaltic concrete shall be no larger than necessary to provide adequate working space for proper installation of pipe and appurtenances. Cutting shall be performed with a concrete saw in a manner which will provide a clean groove the complete thickness of the surface material along each side of the trench and along the perimeter of cuts for structures. 2. Concrete and asphaltic concrete over trenches excavated for pipelines shall be removed so that a shoulder not less than 12" in width at any point is left between the cut edge of the surface and the top edge of the trench. Trench width at the bottom shall not be greater than at the top and no undercutting will be permitted. Cuts shall be made to and between straight or accurately marked curved lines which, unless otherwise required, shall be parallel to the center line of the trench. July 2021 Project#19.00305 312300-Page 5 3. Pavement or other surfaces removed for connections to existing lines or structures shall not be of greater extent that necessary for the installation. 4. Where the trench parallels the length of concrete walks and the trench location is all or partially under the walk, the entire walk shall be removed and replaced. Where the trench crosses drives, walks, curbs, or other surface construction, the surface construction shall be removed and replaced between existing joints or between saw cuts as specified for payment. D. Site Grade: 1. General: Uniformly grade areas within limits of grading under this section, including adjacent transition areas. Smooth finish the surface within specified tolerances; compact with uniform levels or slopes between points where elevations are shown, or between such points and existing grades. 2. Ground Surface Preparation: Remove vegetation, debris, unsatisfactory soil materials, obstructions, and deleterious materials from ground surface prior to placement of fills. Plow, strip, or break up sloped surfaces steeper than 1 vertical to 4 horizontal so that fill material will bond with existing surface. Shape the subgrade as indicated on the drawings by forking, furrowing, or plowing so that the first layer of new material placed thereon will be well bonded to it. 3.2 FIELD MEASUREMENTS A. Alignment, Grade, and Minimum Cover: 1. Vertical and horizontal alignment of pipes, and the maximum joint deflection used in connection therewith, shall be in conformity with requirements of the section covering installation of pipe. 2. Where pipe grades or elevations are not definitely fixed by the contract drawings, trenches shall be excavated to a depth sufficient to provide a minimum depth of backfill cover over the top of the pipe cover depths may be necessary on vertical curves or to provide necessary clearance beneath existing pipes, conduits, drains, drainage structures, or other obstructions encounteredn i r at normal l a pipe grades. Measurement of pipe cover depth shall be made vertically from the outside top of pipe to finished ground or pavement surface elevation except where future surface elevations are indicated on the drawings. July 2021 Project#19.00305 312300-Page 6 B Limiting Trench Widths: Trenches shall be excavated to a width that will provide adequate working space and sidewall clearances for proper pipe installation, jointing, and embedment. For the purposes of quantity measurements and payments, maximum trench widths shall be no greater than the pipe outside diameter plus 24" (12" either side of pipe). 3.3 PROTECTION A. Temporary Protection: Protect structures, utilities, sidewalks, pavements, and other facilities from damages caused by settlement, lateral movement, undermining, washout, and other hazards created by earthwork operations. B. Sheeting and Bracing: Make all excavations in accordance with Federal, State, and Local health and safety rules and regulations, including those promulgated by the Department of Labor, Occupation Safety and Health Administration, "Safety and Health Regulations for Construction". Furnish, put in place, and maintain such sheeting, bracing, etc., as may be necessary to support the sides of the excavation to comply with the above mentioned rules and regulations. C. Blasting: 1. The Contractor shall be responsible for all damage caused by blasting operations. Suitable methods shall be employed to confine all materials lifted by blasting within the limits of the excavation or trench. 2. All rock which cannot be handled and compacted as earth shall be kept separate from other excavated materials and shall not be mixed with backfill or embankment materials except as specified or directed. D. Care and Restoration of Property: 1. Enclose the trunks of trees which are to remain adjacent to the work with substantial wooden boxes of such height as may be necessary to protect them from piled material, equipment or equipment operation. Use excavating machinery and cranes of suitable type and operate the equipment with care to prevent injury to remaining tree trunks, roots, branches and limbs. 2. Do not cut branches, limbs, and roots except by permission of the Engineer. Cut smoothly and neatly without splitting or crushing. In case of cutting or unavoidable injury to branches, limbs, and trunks of trees, neatly trim the cut or injured portions and cover with an application of grafting wax and tree healing paint as directed. 3. Protect by suitable means all cultivated hedges, shrubs and plants that might be injured by the Contractor's operations. Promptly heel in any such trees or shrubbery necessary to be removed and replanted. Perform heeling in and replanting under the direction of a licensed and experienced nurseryman. Replant in their original position all removed July 2021 Project#19.00305 312300-Page 7 shrubbery and trees after construction operations have been substantially completed and care for until growth is reestablished. 4. Replace cultivated hedges, shrubs, and plants injured to such a degree as to affect their growth or diminish their beauty or usefulness, by items of kind and quality at least equal to the kind and quality existing at the start of the work. 5. Do not operate tractors, bulldozers or other power-operated equipment on paved surfaces if the treads or wheels of the equipment are so shaped as to cut or otherwise injure the surfaces. 6. Restore all surfaces, including lawns, grassed, and planted areas that have been injured by the Contractor's operations, to a condition at least equal to that in which they were found immediately before the work was begun. Use suitable materials and methods for such restoration. Maintain all restored plantings by cutting, trimming, fertilizing, etc., until acceptance. Restore existing property or structures as promptly as practicable and do not leave until the end of construction period. E. Protection of Streams: Exercise reasonable precaution to prevent the silting of streams. Provide at Contractor's expense temporary erosion and sediment control measures to prevent the silting of streams and existing drainage facilities. The Contractor shall size structures and conform fully with the North Carolina Sedimentation Pollution Control Act. F. Air Pollution: 1. Comply with all pollution control rules, regulations, ordinances, and statutes which apply to any work performed under the Contract, including any air pollution control rules, regulations, ordinances and statutes, or any municipal regulations pertaining to air pollution. 2. During the progress of the work, maintain the area of activity, including sweeping and sprinkling of streets as necessary, so as to minimize the creation and dispersion of dust. If the Engineer decides that it is necessary to use calcium chloride or more effective dust control, furnish and spread the material, as directed, and without additional compensation. 3.4 TRENCH EXCAVATION A. Length of Trench: 1. No more trenches shall be opened in advance of pipe laying than is necessary to expedite the work. One block or 400 feet (whichever is the shorter) shall be the maximum length of open trench on any line under construction. July 2021 Project#19.00305 312300-Page 8 2. Except where tunneling is indicated on the drawings, is specified, or is permitted by the Engineer, all trench excavation shall be open cut from the surface. B. Trench Excavation: 1. General: Perform all excavation of every description and of whatever substance encountered so that the pipe can be laid to the alignment and depth shown on the drawings. 2. Brace and shore all trenches, where required, in accordance with Federal, State, and Local health and safety rules and regulations, including those promulgated bythe Department of Labor, Occupation Safety and Health Administration, "Safety and Health Regulations for Construction". 3. Make all excavations by open cut unless otherwise specified or indicated on the drawings. 4. Width of Trenches: Excavate trenches sufficiently wide to allow proper installation of pipe, fittings and other materials. Measurement and payment quantities will be based on a maximum trench width of not more than 12" clear of pipe on either side at any point. Do not widen trenches by scraping or loosening materials from the sides. 5. Trench Excavation in Earth: Earth excavation includes all excavation of whatever substance encountered. In locations where pipe is to be bedded in earth excavated trenches, fine grade the bottoms of such trenches to allow firm bearing for the bottom of the pipe on undisturbed earth. Where any part of the trench has been excavated below the grade of the pipe, fill the part excavated below such grade with pipe bedding material and compact at the Contractor's expense. 6. Trench Excavation in Fill: If pipe is to be laid in embankments or other recently filled material, first place the fill material to the finish grade or to a height of at least one foot above the top of the pipe, whichever is the lesser. Take particular care to ensure maximum consolidation of material under the pipe location. Excavate the pipe trench as though in undisturbed material. 7. Trench Bottom in Poor Soil: Excavate and remove unstable or unsuitable soil to a width and depth, as directed by the Engineer, and refill with a thoroughly compacted gravel bedding. 8. Bell Holes: Provide bell holes at each joint to permit the joint to be made properly and to provide a continuous bearing and support for the pipe. C. Trench Backfill: 1. General: Unless otherwise specified or indicated on the drawings, use suitable material for backfill which was removed in the course of making the construction excavations. Do not use frozen material for the backfill and do not place backfill on frozen material. Remove previously frozen July 2021 Project#19.00305 312300-Page 9 material before new backfill is placed. Start backfilling as soon as practicable after the pipes have been laid, or the structures have been built and are structurally adequate to support the loads, including construction loads to which they will be subjected, and proceed until its completion. 2. With the exception mentioned below in this paragraph, do not backfill trenches at pipe joints until after that section of the pipeline has successfully passed any specified tests required. Should the Contractor wish to minimize the maintenance of lights, and barricades, and the obstruction of traffic, he may, at his own risk, backfill the entire trench as soon as practicable after installation of pipe, and the related structures have acquired a suitable degree of strength. He shall, however, be responsible for removing and later replacing such backfill, at his own expense, should he be ordered to do so in order to locate and repair or replace leaking or defective joints or pipe. 3. Material: The nature of the materials will govern both their acceptability for backfill and the methods best suited for their placement and compaction in the backfill. Both are subject to the approval of the Engineer. Do not place stone or rock fragments larger than 4" in greatest dimension in the backfill. Do not drop large masses of backfill material into the trench in such a manner as to endanger the pipeline. Use a timber grillage to break the fall of material dropped from a height of more than 5 feet. Exclude pieces of bituminous pavement from the backfill unless their use is expressly permitted. 4. Zone Around Pipe: Place bedding material to the level shown on the Drawings and work material carefully around the pipe to ensure that all voids are filled, particularly in bell holes. For backfill up to a level of 2 feet over the top of the pipe, use only selected materials containing no rock, clods or organic materials. Place the backfill and compact thoroughly under the pipe haunches and up to the mid-line of the pipe in layers not exceeding 6" in depth. Place each layer and tamp carefully and uniformly so as to eliminate the possibility of lateral displacement. Place and compact the remainder of the zone around the pipe and to a height of one foot above the pipe in layers not exceeding 6" and compact to a maximum density of at least 100 % as determined by ASTM D0698. 5. Tamping: Deposit and spread backfill materials in uniform, parallel layers not exceeding 12" thick before compaction. Tamp each layer before the next layer is placed to obtain a thoroughly compacted mass. Furnish and use, if necessary, an adequate number of power driven tampers, each weighing at least 20 pounds for this purpose. Take care that the material close to the bank, as well as in all other portions of the trench, is thoroughly compacted. When the trench width and the depth to which backfill has been placed are sufficient to make it feasible, and it can be done effectively and without damage to the pipe, backfill may, on approval of the Engineer, be compacted by the use of suitable rollers, tractors, or similarly powered equipment instead of by tamping. For July 2021 Project#19.00305 312300-Page 10 compaction by tamping (or rolling), the rate at which backfilling material is deposited in the trench shall not exceed that permitted by the facilities for its spreading, leveling and compacting as furnished by the Contractor. 6. Wet the material by sprinkling, if necessary, to ensure proper compaction by tamping (or rolling). Perform no compaction by tamping (or rolling) when the material is too wet either from rain or applied water to be compacted properly. 7. Trench Compaction: Compact backfill in pipe trenches to the maximum density as shown on the drawings, or as listed in the subsection entitled COMPACTION, with a moisture content within the range of values of maximum density as indicated by the moisture-density relationship curve. 3.5 SITE GRADE A. Placement and Compaction: 1. Place backfill and fill material in layers not more than 8" in loose depth. Before compaction, moisten or aerate each layer as necessary to provide the optimum moisture content. Compact each layer to the required percentage of maximum density for each area classification. Do not place backfill or material on surfaces that are muddy, frozen, or contain frost or ice. 2. In areas not accessible to rollers or compactors, compact the fill with mechanical hand tampers. If the mixture is excessively moistened by rain, aerate the material by means of blade graders, harrows, or other approved equipment, until the moisture content of the mixture is satisfactory. Finish the surface of the layer by blading or rolling with a smooth roller, or a combination thereof, and leave the surface smooth and free from waves and inequalities. 3. Place backfill and fill materials evenly adjacent to structures, to the required elevations. Take care to prevent wedging action of backfill against structures. Carry the material uniformly around all parts of the structure to approximately the same elevation in each lift. 4. When existing ground surface has a density less than that specified under the subsection entitled COMPACTION for the particular area classification, break up the ground surface, pulverize, moisture-condition to the optimum moisture content, and compact to required depth and percentage of maximum density. B. Grading Outside Building Lines: Grade to drain away from structures to prevent ponding of water. Finish surface free from irregular surface changes. C. Planting Areas: Finish areas to receive topsoil to within not more than one inch (1") above or below the required subgrade elevations, compacted as specified, and free from irregular surface changes. July 2021 Project#19.00305 312300-Page 11 D. Walks: Shape the surface of areas under walks to line, grade, and cross-section, with the finish surface not more than 0" above or 1" below the required subgrade elevation, compacted as specified, and graded to prevent ponding of water after rains. E. Pavements: 1 . Shape the surface of the areas under pavement to line, grade and cross section, with finish surface not more than 1/2" above or below the required subgrade elevation, compacted as specified, and graded to prevent ponding of water after rains. Include such operations as plowing, discing, and any moisture or aerating required to provide the optimum moisture content for compaction. 2. Fill low areas resulting from removal of unsatisfactory soil materials, obstructions, and other deleterious materials, using satisfactory soil material. 3. Shape to line, grade, and cross section as shown on the drawings. F. Protection of Graded Areas: Protect newly graded areas from traffic and erosion, and keep free of trash and debris. Repair and re-establish grades in settled, eroded, and rutted areas to specified tolerances. G. Reconditioning Compacted Areas: Where completed compacted areas are disturbed by subsequent construction operations or adverse weather prior to acceptance of work, scarify surface, reshape, and compact to required density prior to further construction. H. Unauthorized Excavation: 1 . Unauthorized excavation consists of the removal of materials beyond indicated elevations without the specific direction of the Engineer. Under footings, foundations, bases, etc., fill unauthorized excavation by extending the indicated bottom elevation of the concrete to the bottom of the excavation, without altering the required top elevation. Lean concrete fill may be used to bring elevations to proper position only when acceptable to the Engineer. 2. For pipe trenches and elsewhere, backfill and compact unauthorized excavations as specified for authorized excavations of the same classification, unless otherwise directed by the Engineer. 3.6 BACKFILL AROUND STRUCTURES A. General: Unless otherwise specified or indicated on the drawings, use suitable material for backfill which was removed in the course of making the backfill and do not place backfill which was removed in the course of making the construction excavations. Do not use frozen material for the backfill and do not July 2021 Project#19.00305 312300-Page 12 place backfill upon frozen material. Remove previously frozen material before new backfill is placed. B. Material: Approved selected materials available from the excavations may be used for backfilling around structures. Obtain material needed in addition to that of construction excavations from off-site borrow pits selected by the Contractor. Furnish all borrow material needed on the work. Place and compact all material, whether from the excavation or borrow, to make a dense, stable fill. Use fill material which contains no vegetation, masses of roots, individual roots over 18" long or more than 1/2" in diameter, stones over 4" in diameter, or porous matter. Organic matter must not exceed negligible quantities. C. Placing Backfill: Do not place backfill against or on structures until they have attained sufficient strength to support the loads (including construction loads) to which they will be subjected, without distortion, cracking, or other damage. Make special leakage tests, if required, as soon as practicable after the structures are structurally adequate and other necessary work has been done. Use the best of the excavated materials in backfilling within 2 feet of the structure. Avoid unequal soil pressures by depositing the material evenly around the structure. 3.7 COMPACTION A. General: Control soil compaction during construction providing at least the minimum percentage of density specified for each area classification. B. Percentage of Maximum Density Requirements: After compaction, all fill will be tested in accordance with Method "C" of ASTM D-698, unless specified otherwise. Except as noted otherwise for the zone around pipe, provide not less than the following percentages of maximum density of soil material compacted at optimum moisture content, for the actual density of each layer of soil material-in-place: UNPAVED AREAS Compact Full Depth to 92% DRIVES AND PARKING Top 24" - 100% TRENCH BACKFILL (PAVED AREAS) Compact full depth to 100% TRENCH BACKFILL (UNPAVED AREAS) Compact full depth to 95% ALL OTHER BACKFILL Compact full depth to 95% C. Moisture Control: Where subgrade or layer of soil material must be moisture conditioned before compaction, uniformly apply water to surface of subgrade, or layer of soil material, to prevent free water appearing on surface during or subsequent to compaction operations. Remove and replace, or scarify and air dry, soil material that is too wet to permit compaction to specified density. Soil material that has been removed because it is too wet to permit compaction may July 2021 Project#19.00305 312300-Page 13 be stockpiled or spread and allowed to dry. Assist drying by discing, harrowing or pulverizing, until moisture content is reduced to a satisfactory value, as determined by moisture-density relation tests. D. Disposal of Surface Material: Upon approval of the Engineer, haul all surplus materials not needed or acceptable for backfill off-site. 3.8 FIELD QUALITY CONTROL A. Soil Testing and Inspection Service: Compaction tests of all fill areas will be made by an independent testing laboratory. Such tests will be provided and paid for by the Owner, except that tests that reveal non-conformance with the specifications and all succeeding tests for the same area shall be at the expense of the Contractor until conformance with the specifications is established. The Owner will be responsible for paying for only the successful tests. END OF SECTION 312300 July 2021 Project#19.00305 312300-Page 14 SECTION 320117 BITUMINOUS PAVEMENT REPAIRS PART 1 - GENERAL 1.1. SCOPE OF WORK A. This section covers the repairs of pavement for all asphalt surfaces. 1.2. PERFORMANCE A. Construction of the subgrade, base course, and paving shall be undertaken immediately after completion of all underground piping and structures, all curbs and gutters, all yard piping, all conduits and all other facilities passing beneath paved areas, and all structural slabs and foundations required within or adjacent to the paved areas. B. Weather Limitations: Bituminous mixtures shall not be produced or placed during rainy weather, when the subgrade or base course is frozen or shows any evidence of excess moisture, when moisture on the surface to be paved would prevent proper bond, nor when the air temperature is less than 40 degrees F° in the shade away from artificial heat. 1.3. REFERENCES A. All work and materials required under this section of the specifications shall conform to the applicable sections of the latest editions of the North Carolina Department of Transportation Division of Highways Standard Specifications for Roads and Structures and the North Carolina Department of Transportation Pavement Construction Section Superpave Hot Mix Asphalt / Quality Management System. PART 2 - PRODUCTS (NOT USED) PART 3 - EXECUTION 3.1 INSTALLATION A. Preparation of Subqrade: The work covered under this section of this specification shall be performed in strict accordance with Section 500 of the latest edition of the North Carolina Department of Transportation Division of Highways Standard Specifications for Roads and Structures. July 2021 Project#19.00305 320117-Page 1 B. Application of Aggregate Base Course: The work covered under this section of this specification shall be performed in strict accordance with Section 520 of the latest edition of the North Carolina Department of Transportation Division of Highways Standard Specifications for Roads and Structures. C. Bituminous Plant Mix - General: The work covered under this section of this specification shall be performed in strict accordance with Section 610 and Section 620 of the latest edition of the North Carolina Department of Transportation Division of Highways Standard Specifications for Roads and Structures and Sections 2 through 6 and Section 9 of the Superpave Hot Mix Asphalt / Quality Management System of the North Carolina Department of Transportation Pavement Construction Section, with the exception that recycled products are not permitted. For pavement repairs, see Section 654 of the Superpave Hot Mix Asphalt / Quality Management System of the North Carolina Department of Transportation Pavement Construction Section. D. Tack Coat: The work covered under this section of this specification shall be performed in strict accordance with Section 605 of the latest edition of the North Carolina Department of Transportation Division of Highways Standard Specifications for Roads and Structures and Section 9.3 of the Superpave Hot Mix Asphalt / Quality Management System of the North Carolina Department of Transportation Pavement Construction Section. E. Bituminous Base Course (Type B 25.0C): The work covered under this section of the specification shall be performed in strict accordance with Section 4 of the Superpave Hot Mix Asphalt / Quality Management System of the North Carolina Department of Transportation Pavement Construction Section. F. Bituminous Binder Course (Type 119.0C): The work covered under this section of the specification shall be performed in strict accordance with Section 4 of the Superpave Hot Mix Asphalt / Quality Management System of the North Carolina Department of Transportation Pavement Construction Section. G. Bituminous Surface Course (Types S 9.5B): The work covered under this section of the specification shall be performed in strict accordance with Section 4 of the Superpave Hot Mix Asphalt / Quality Management System of the North Carolina Department of Transportation Pavement Construction Section. H. Traffic Markings: The Contractor shall repair and restripe any traffic markings that were damaged, removed or covered during construction. All work shall be done in accordance with North Carolina Department of Transportation requirements and specifications. The cost of this work shall be included in the unit bid prices for other related work and no additional payment shall be made. Existing Utilities: All existing manhole and valve covers shall be raised by the Contractor as necessary prior to paving so that the tops of the covers are flush July 2021 Project#19.00305 320117—Page 2 with the final surface. The cost of this work shall be included in the unit bid prices for other related work and no additional payment shall be made. 3.2 TESTING A. All of the above work will be subject to thickness and compaction tests as deemed necessary by the Engineer and conforming to Section 10 of the Superpave Hot Mix Asphalt / Quality Management System of the North Carolina Department of Transportation Pavement Construction Section. Such tests will be provided and paid for by the Owner, except that tests which reveal non-conformance with the Specifications and all succeeding tests for the same area, until conformance with the Specifications is established, shall be at the expense of the Contractor. The Owner will be responsible for paying for only the successful tests. END OF SECTION 320117 July 2021 Project#19.00305 320117—Page 3 THIS PAGE INTENTIONALLY LEFT BLANK I SECTION 322905 RESTORATION OF SURFACES PART 1 - GENERAL 1.1 RELATED DOCUMENTS A. Drawings and general provisions of the Contract, including Modified General and Supplementary Conditions and Division 01 Specification Sections, apply to this Section. 1.2 SUMMARY A. This section covers the furnishing of all labor, equipment and materials necessary for the proper restoration of existing surfaces disturbed or damaged as a result of construction operations which are not specifically scheduled or specified for topsoil and seeding, paving, landscaping or other surfacing. B. In general, the types of replacement included in this section are seeding along pipelines, concrete sidewalks, driveways, roadways, ditches, lawns and landscaped areas, and curb and gutter. C. Any damage to existing structures shall be repaired using materials and workmanship equal to, or better than, those of the original construction. 1.3 DEFINITIONS A. CABC — Crushed aggregate base course. B. NCDOT — North Carolina Department of Transportation. C. PSI — Pounds per square inch. 1.4 SUBMITTALS A. All submittals shall be in accordance with the requirements of the pertinent specification sections referenced herein. B. An appropriate concrete mix design shall be submitted for all concrete sidewalks, driveways, roadways, and curb and gutter restored as part of this project. July 2021 Project#19.00305 322905 - Page 1 PART 2 - PRODUCTS (NOT USED) PART 3 - EXECUTION 3.1 SEEDING DISTURBED AREAS A. All ground surfaces disturbed by construction activity, which are not classified as lawns, landscaped areas, or pavement areas, but would be classified as open fields, shall be raked smooth and seeded in accordance with the appropriate paragraph(s) within Section 329200 entitled Turf and Grasses. Large rocks, clumps of earth and excessive spoil material shall be removed from the area prior to seeding. B. Shoulders of all roads shall be restored as specified for lawns and landscaped areas. C. Wooded areas not classified as lawns shall be restored to as near their original condition as possible. 3.2 CONCRETE SIDEWALKS A. Concrete walks removed in connection with, or damaged as a result of, construction operations under the Contract shall be replaced with new construction. Such walks shall be constructed of 4,000 PSI concrete on a thoroughly compacted subgrade, shall have a vertical thickness, unless otherwise noted, of not less than 4 inches or the thickness of the replaced walk where greater than 4 inches. B. Walks shall be float finished, edged with an edging tool, and grooved at intermediate intervals not in excess of the width of the walk, uniform throughout the length of the walk in any one direction. 3.3 DRIVEWAYS A. Unless otherwise noted, unpaved driveways shall be surfaced with not less than 4 inches of CABC, topped with 4 inches of stone, gravel, or other materials equal to that found in the original driveway. Driveways shall be left in a condition better than their original condition. B. Concrete drives shall be replaced with 4,000 PSI concrete and shall have equal thickness and reinforcing steel to that of the original drive. Prior to placing the concrete a 6-inch aggregate base course shall be placed in the drive area. C. Unless otherwise noted, bituminous or asphaltic concrete drives shall be restored to original base and asphalt thicknesses or a minimum of 6 inches of July 2021 Project#19.00305 322905 -Page 2 I aggregate base course and a 2-inch surface course, whichever is greater. Base material shall be compacted in 3-inch lifts and Type SF 9.5A or S 9.5B asphalt compacted in 2-inch lifts to match existing pavement section. 3.4 ROADWAY REPLACEMENT A. Bituminous or Asphaltic pavements shall include all areas paved with blacktop, built up pavements or oil and stone, tar and stone and similar pavements constructed with a bituminous or asphalt and stone materials. B. Immediately upon completion of installation of underground piping and structures, the trench shall be backfilled and the roadway shall be repaired. Provide materials as specified in the Contract Drawings. If, in the opinion of the Engineer, the area adjacent to the excavation has not been damaged to the extent that the base course need to be replaced, restoration may consist of a surface course of sufficient thickness to meet the existing pavement. C. Unless otherwise noted, bituminous or asphaltic concrete roadways shall be restored to original base and asphalt thicknesses or a minimum of 6 inches of aggregate base course and a 2-inch surface course, whichever is greater. Base material shall be compacted in 3-inch lifts and Type SF 9.5A or S 9.5B asphalt compacted in 2-inch lifts to match existing pavement section. D. Portland cement concrete roadways shall be replaced with 4,000 PSI concrete and shall have equal thickness and reinforcing steel as the original roadway. An aggregate base course with a thickness of 6 inches shall be placed prior to the placing of concrete. E. Differential settlement of restored pavements shall be corrected immediately. F. The Contractor shall repair and restripe any traffic markings that were damaged, removed or covered during construction. All work shall be done in accordance with NCDOT requirements and specifications. G. All existing manhole and valve covers shall be raised, as required, by the Contractor prior to paving. The cost of this work shall be included in the unit bid prices for other related work and no additional payment shall be made. 3.5 DITCHES A. Ditches shall be regraded to the original grade and line. The surface of all ditches shall be returned to the same condition as found before commencing work. July 2021 Project#19.00305 322905 -Page 3 3.6 LAWNS AND LANDSCAPED AREAS A. Lawns and landscaped areas shall be regraded and replaced as follows: 1 . Grading shall be to the grade existing before construction of the work under this Contract. 2. Lawn replacement shall be in accordance with the appropriate paragraph(s) within Section 329200 entitled Turf and Grasses. Topsoiled areas shall be replaced with topsoil of equal quality and quantity. B. Landscaped areas shall be replaced with shrubs, hedges, ornamental trees, flowers, or other items to original condition. 3.7 CURB AND GUTTER A. Curb and gutter removed with or damaged as a result of construction operations, injured or disturbed by the Contractor, his agents, or employees, shall be replaced with new construction to a condition similar and equal to that existing before damage was incurred. 4,000 PSI concrete shall be used in curb and gutter replacement. B. All work associated with curb and gutter replacement shall be in accordance with Section 846-3 of the NCDOT Standard Specifications for Roads and Structures (latest edition). Horizontal and vertical alignment of the curb and gutter shall match that of the existing to the greatest extent practical, unless directed otherwise by the Engineer. 3.8 DAMAGE TO STRUCTURES A. Any damage to existing structures shall be repaired of materials and workmanship equal to those of original construction. Extensively damaged structures, where the structural stability has been affected or which cannot be repaired in a suitable fashion shall be replaced entirely. Replacement shall not commence until approval of the plan of replacement has been given by the Engineer. Replacement costs shall be responsibility of the Contractor. END OF SECTION 322905 July 2021 Project#19.00305 322905 -Page 4 I I I SECTION 330505 PRESSURE TESTING OF PIPING PART 1 - GENERAL 1.1 DESCRIPTION IA. Scope of Work: This section specifies the leakage testing requirements for plant piping. B. Test Pressures: Test pressures for the piping shall be as specified in the pertinent sections of the project specifications and/or as shown on the Contract Drawings. C. Test Method: Test Method for the piping shall be as specified in the pertinent sections in the project specifications and/or as shown on the Contract Drawings D. Testing Records: 1. Provide a record of each piping installation during the testing. These records shall include: a. Date of test. b. Identification of pipeline tested or retested. c. Identification of pipeline material. d. Identification of pipe specification. e. Test fluid. f. Test pressure. g. Remarks: Leaks identified (type and location), types of repairs, or corrections made. h. Certification by Contractor that the leakage rate measured conformed to the Project Specifications. i. Signature of Owner's representative witnessing pipe test. 2. Submit five (5) copies of the test records to the Engineer's representative upon completion of the testing. PART 2 - PRODUCTS 2.1 GENERAL A. Testing fluid shall be water for all hydrostatic tests, unless pneumatic test is included. July 2021 Project#19.00305 330505-Page 1 2.2 MATERIALS AND EQUIPMENT A. Provide pressure gauges, pipes, bulkheads, pumps, and meters to perform the hydrostatic and pneumatic testing. PART 3 - EXECUTION 3.1 TESTING PREPARATION A. Pipes shall be in place and anchored before commencing pressure testing. B. Conduct hydrostatic and pneumatic tests on exposed and aboveground piping after the piping has been installed and attached to the pipe supports, hangers, anchors, expansion joints, valves, and meters. C. Before conducting hydrostatic tests, flush pipes with water to remove dirt and debris. For pneumatic tests, blow air through the pipes. D. Test new pipelines which are to be connected to existing pipelines by isolating the new line from the existing line by means of pipe caps, special flanges, or blind flanges. After the new line has been successfully tested, remove caps or flanges and connect to the existing piping. E. Conduct hydrostatic tests on buried pipe after the trench has been completely backfilled. The pipe may be partially backfilled and the joints left exposed for inspection for an initial leakage test. Perform the final test, however, after completely backfilling and compacting the trench. F. Pressure Test: 1. All tests shall be made in the presence of and to the satisfaction of the Owner or Engineer and also, to the satisfaction of any local or state inspector having jurisdiction. a. Provide not less than three (3) days' notice to the Owner, Engineer, and the authority having jurisdiction when it is proposed to make the tests. b. Any piping or equipment that has been left unprotected and subject to mechanical or other injury in the opinion of the Engineer shall be retested in part or in whole as directed by the Engineer. c. The piping systems may be tested in sections as the work progresses, but no joint or portion of the system shall be left untested. 2. All elements within the system that may be damaged by the testing operation shall be removed or otherwise protected during the operation. July 2021 Project#19.00305 330505-Page 2 3. Repair all damage done to existing or adjacent work or materials due to or on account of the tests. 3.2 INSPECTION AND TESTING A. Hydrostatic Testing of Aboveground or Exposed Piping: Open vents at high points of the piping system to purge air while the pipe is being filled. Subject the piping system to the test pressure of 11/2 times working pressure unless otherwise noted. Maintain the test pressure for a minimum of 2 hours. Examine joints, fittings, valves, and connections for leaks. The piping system shall show no leakage or weeping. Correct leaks and retest until no leakage is obtained. B. Hydrostatic Testing of Buried Piping: 1. Where any section of the piping contains concrete thrust blocks or encasement, do not make the pressure test until at least 10 days after the concrete has been poured. When testing mortar-lined piping, fill the pipe to be tested with water and allow it to soak for at least 48 hours to absorb water before conducting the pressure test. 2. Test Pressure: 50 percent (50%) above the normal working pressure, unless otherwise noted on the Contract Drawings. 3. Apply and maintain the test pressure by means of a hydraulic force pump. Maintain the test pressure for a minimum duration of 2 hours. After the test pressure is reached, use a meter to measure the additional water added to maintain the pressure during the 2 hours. This amount of water is the loss due to leakage in the piping system. The allowable leakage rate is defined by the formula. SD(P)1/2T L _ 133,200 in which: L = Allowable Leakage During the Test Period (gallons) S = Length of Pipe Tested (feet) D = Diameter of the Pipe (inches) P = Specified Test Pressure (psig) T = Specified Time (hours) 4. Visible Leakage: All leaks evident at the surface shall be repaired and leakage eliminated regardless of the measured total leakage. 5. Leakage Measurement: The amount of water required to maintain the test pressure is the leakage. July 2021 Project#19.00305 330505- Page 3 6. Repair and retest any pipes showing leakage rates greater than that allowed. 7. Leakage Repair: Repairs to leaks shall be completed in strict accordance with the pipe manufacturer's written recommendations. C. Pneumatic Testing: 1. Test Pressure: Minimum 1'/2 times working pressure. 2. Perform pneumatic testing using nitrogen. Perform tests only after the piping has been completely installed including supports, hangers, and anchors. Protect test personnel and Owner's operating personnel. Secure piping to be tested to prevent the pipe from moving and to prevent damage to adjacent piping and equipment. Remove or isolate from the pipe any appurtenant instruments or devices that could be damaged by the test, prior to applying the test. 3. Apply an initial pneumatic leakage test of 25-psig to the piping system prior to final leak testing. Examine for leakage, detected by soap bubbles, at joints and connections. After correcting visible leaks, gradually increase the pressure in the system to not more than one-half of the test pressure. Then increase the pressure in steps of approximately one-tenth of the test pressure until the required test pressure has been reached. Continuously maintain the pneumatic test pressure for a minimum time of 2 hours and for such additional time as may be necessary to conduct a soap bubble examination for leakage. The piping system shall show no leakage. Correct any visible leakage and retest. D. Vacuum Testing: 1. Test Pressure: Minimum 11/2 times working vacuum pressure. 2. Perform vacuum test after performing a pneumatic test (as previously specified) on all lines scheduled for vacuum testing. Develop a vacuum in the entire line being tested by use of temporary mechanical means and as measured by attached gauges. Develop vacuum slowly until test vacuum pressure has been achieved. Vacuum must hold for 4 hours without significant loss in vacuum pressure to demonstrate a leakproof system. END OF SECTION 330505 July 2021 Project#19.00305 330505-Page 4 SECTION 400500 PIPING - GENERAL REQUIREMENTS PART 1 - GENERAL 1.1 DESCRIPTION IA. This section identifies process-mechanical piping systems to be provided, specifies unique requirements for each system identified, and references other sections where detailed requirements of piping components are specified. 1.2 QUALITY ASSURANCE A. Materials and Equipment: Unless otherwise specified, all materials and equipment furnished for permanent installation in the Work shall conform to applicable standards and specifications and shall be new, unused, of first quality manufactured in the United States, and undamaged when installed or otherwise incorporated in the Work. All materials shall conform to the appropriate AWWA standards. No such material or equipment shall be used by the Contractor for any purpose other than that intended or specified, unless such use is specifically authorized in writing by the Owner. No material shall be delivered to the work site workout prior acceptance of shop drawings and data by the Engineer. B. Equivalent Materials and Equipment: 1. Whenever a material or article is specified or described by using the name of a proprietary product or the name of a particular manufacturer or vendor, the specific item mentioned shall be understood as establishing the type, function, and quality desired. Other manufacturers' products will be accepted provided sufficient information is submitted to allow the Engineer to determine that the products proposed are equivalent to those named. Such items shall be submitted for review in accordance with Section 013300. 2. Requests for review of equivalency will not be accepted from anyone except the Contractor and such requests will not be considered until after the contract has been awarded. C. Governing Standards: Equipment and appurtenances shall be designed in conformity with ANSI, ASME, ASTM, IEEE, NEMA, OSHA, AGMA, and other generally accepted applicable standards. They shall be of rugged construction and of sufficient strength to withstand all stresses which may occur during fabrication, testing, transportation, installation, and all conditions or operations. All bearings and moving parts shall be adequately protected against wear by July 2021 Project#19.00305 400500-Page 1 bushings or other acceptable means. Provisions shall be made for adequate lubrication with readily accessible means. D. Tolerances: Machinery parts shall conform to the dimensions indicated on the Contract Drawings within allowable tolerances. Protruding members such as joints, corners, and gear covers shall be finished in appearance. All exposed welds shall be ground smooth and the corners of structural shapes shall be rounded or chamfered. E. Clearances: Ample clearances shall be provided for inspection and adjustment. All equipment shall fit the allotted space and shall leave reasonable access room for servicing and repairs. Greater space and room required by substituted equipment shall be provided by the Contractor and at his expense. F. Testing: 1. When the equipment is specified to be factory tested, the results of the tests shall be submitted to the Engineer and approval of the test results shall be obtained before shipment of the equipment. 2. When an item of equipment, including controls and instrumentation, has been completely erected, the Contractor shall notify the Engineer, who will designate a time to make such tests as required, and operate the item to the satisfaction of the Engineer. All testing shall be done in the presence of the Engineer or Resident Project Representative. "Completely erected" shall mean that the installation is erected, all necessary adjustments have been made, all required utility connections have been made, required lubricants and hydraulic fluid have been added and the unit has been cleaned and painted. G. Pressure Test: 1. After installation, all piping shall be pressure tested. Piping shall be tested in accordance with Section 330505: Pressure Testing of Piping. 2. All tests shall be made in the presence of and to the satisfaction of the Engineer and also, to the satisfaction of any local or state inspector having jurisdiction. a. Provide not less than three days notice to the Engineer and the authority having jurisdiction when it is proposed to make the tests. b. Any piping or equipment that has been left unprotected and subject to mechanical or other injury in the opinion of the Engineer shall be retested in part or in whole as directed by the Engineer. c. The piping systems may be tested in sections as the Work progresses by no joint or portion of the system shall be left untested. July 2021 Project#19.00305 400500-Page 2 3. All elements within the system that may be damaged by the testing operation shall be removed or otherwise protected during the operation. 4. All defects and leaks observed during the tests shall be corrected and made tight in an approved manner and the tests repeated until the system is proven tight. 5. Repair all damage done to existing or adjacent work or materials due to or on account of the tests. 6. Provide test pumps, gauges, or other instruments and equipment required for the performance of all tests. Provide all temporary bracing, test plugs, additional restraint, and thrust blocking which may be required for test pressures above normal working pressures. 7. All tests shall be maintained for as long a time as required to detect all defects and leaks but not less than the duration specified for each type of pipe or piping system in this Division. H. Failure of Test: 1. Defects: Any defects in the equipment, or deviations from the guarantees or requirements of the Specifications, shall be promptly corrected by the Contractor by replacements or otherwise. The decision of the Engineer as to whether or not the Contractor has fulfilled his obligations under the Contract shall be final and conclusive. If the Contractor fails to correct any defects or deviations, or if the replaced equipment when tested shall fail again to meet the guarantees or specified requirements, the Owner, notwithstanding his having made partial payment for work and materials which have entered into the manufacturer for such equipment, may reject that equipment and order the Contractor to remove it from the premises at the Contractor's expense. 2. Rejection of Equipment: In case the Owner rejects a particular item of equipment, then the Contractor hereby agrees to repay to the Owner all sums of money paid to him to deliver to the Contractor a bill of sale of all his rights, title, and interest in and to the rejected equipment provided, however that the equipment shall not be removed from the premises until the Owner obtains from other sources other equipment to take the place of that rejected. The bill of sale shall not abrogate the Owner's right to recover damages for delays, losses or other conditions arising out of the basic Contract. The Owner hereby agrees to obtain the alternate equipment within a reasonable time and the Contractor agrees that the Owner may use the original equipment furnished by him without rental or other charge until the other equipment is obtained. Responsibility During Tests: The Contractor shall be fully responsible for the proper operation of equipment during tests and instruction periods and shall July 2021 Project#19.00305 400500-Page 3 neither have nor make any claim for damage which may occur to equipment prior to the time when the Owner formally takes over the operation thereof. J. Acceptance of Materials: 1. Only new materials and equipment shall be incorporated in the Work. All materials and equipment furnished by the Contractor shall be subject to the inspection and acceptance of the Owner. No material shall be delivered to the Work without prior submittal approval of the Engineer. 2. The Contractor shall submit to the Engineer data relating to materials and equipment he proposes to furnish for the Work. Such data shall be in sufficient detail to enable the Engineer to identify the particular product and to form an opinion as to its conformity to the Specifications. 3. Facilities and labor for handling and inspection of all materials and equipment shall be furnished by the Contractor. If the Engineer requires, either prior to beginning or during the progress of the Work, the Contractor shall submit samples of materials for such special test as may be necessary to demonstrate that they conform to the Specifications. Such sample shall be furnished, stored, packed, and shipped as directed at the Contractor's expense. Except as otherwise noted, the Owner will make arrangements for and pay for tests. 4. The Contractor shall submit data and samples sufficiently early to permit consideration and acceptance before materials are necessary for incorporation in the Work. K. Safety Requirements: 1. In addition to the components shown and specified, all machinery and equipment shall be safeguarded in accordance with the safety features required by the current codes and regulations of ANSI, OSHA, and local industrial codes. 2. The Contractor shall provide for each exposed V-belt drive or rotating shaft a protective guard which shall be securely bolted to the floor or apparatus. The guard shall completely enclose drives and pulleys and be constructed to comply with all applicable safety requirements. 1.3 SUBMITTALS A. Submit to the Engineer in accordance with Section 013300. July 2021 Project#19.00305 400500- Page 4 1.4 PRODUCT DELIVERY, STORAGE AND HANDLING A. Packaging: All equipment shall be suitably packaged to facilitate handling and protect against damage during transit and storage. All equipment shall be boxed, crated, or otherwise completely enclosed and protected during shipment, handling, and storage. All equipment shall be protected from exposure to the elements and shall be kept thoroughly dry at all times. B. Protection: All machined surfaces and shafting shall be cleaned and protected from corrosion by the proper type and amount of coating necessary to assure protection during shipment and prior to installation. Painted surfaces shall be protected against impact, abrasion, discoloration, and other damage. All painted surfaces which are damaged prior to acceptance of equipment shall be repainted to the satisfaction of Engineer. C. Lubrication: Grease and lubricating oil shall be applied to all bearings and similar items as necessary to prevent damage during shipment and storage. D. Marking: Each item of equipment shall be tagged or marked as identified in the delivery schedule or on the Shop Drawings. Complete packing lists and bills of material shall be included with each shipment. E. Fabricated sub-assemblies, if any, shall be shipped in convenient sections as permitted by carrier regulations and shall be properly match-marked for ease of field erection. F. Responsibility: 1. The Contractor shall be responsible for all material, equipment, and supplies sold and delivered to the site under this Contract until final acceptance of the Work by the Owner. In the event any such material, equipment, and supplies are lost, stolen, damaged, or destroyed prior to final inspection and acceptance, the Contractor shall replace same without additional cost to the Owner. 2. Should the Contractor fail to take proper action on storage and handling of equipment supplied under this Contract within seven days after written notice to do so has been given, the Owner retains the right to correct all deficiencies noted in previously transmitted written notice and deduct the cost associated with these corrections from the Contractor's Contract. These costs may be comprised of expenditures for labor, equipment usage, administrative, clerical, engineering, and any other costs associated with making the necessary corrections. G. Delivery: The Contractor shall arrange deliveries of products in accordance with construction schedules and coordinate to avoid conflict with work and conditions at the site. July 2021 Project#19.00305 400500-Page 5 1. The Contractor shall deliver products in undamaged condition, in manufacturer's original containers or packaging, with identifying labels intact and legible. 2. Immediately on delivery, the Contractor shall inspect shipments to assure compliance with requirements of Contract Documents and accepted submittals, and that products are properly protected and undamaged. 3. Under no circumstances shall the Contractor deliver equipment to the site more than one month prior to installation without written authorization from the Engineer. Operation and maintenance data shall be submitted to the Engineer for review prior to shipment of equipment as described in Section 017823 — Operating and Maintenance Data. H. Storage and Protection of Products: 1. The Contractor shall furnish a covered, weather-protected storage structure providing clean, dry noncorrosive environment for all mechanical equipment, valves, architectural items, electrical and instrumentation equipment, and special equipment to be incorporated into this project. Storage of equipment shall be in strict accordance with the "Instructions for Storage" of each equipment supplier and manufacturer furnished and installed including connection of space heaters, and placing stored lubricants in equipment. Corroded, damaged, or deteriorated equipment and parts shall be replaced before acceptance of the project. Equipment and materials not properly stored will not be included in a payment estimate. a. The Contractor shall store products subject to damage by the elements in weathertight enclosures. b. The Contractor shall maintain temperature and humidity within the ranges required by manufacturer's instructions. c. The Contractor shall store fabricated products above the ground, on blocking or skids, to prevent soiling or staining. The Contractor shall cover products which are subject to deterioration with impervious sheet coverings and provide adequate ventilation to avoid condensation. d. The Contractor shall store loose granular materials in a well-drained area on solid surfaces to prevent mixing with foreign matter. 2. All materials and equipment to be incorporated in the Work shall be handled and stored by the Contractor before, during, and after shipment in a manner to prevent warping, twisting, bending, breaking, chipping, rusting, and any injury, theft, or damage of any kind whatsoever to the material or equipment. July 2021 Project#19.00305 400500-Page 6 3. Cement, sand, and lime shall be stored under a roof and off the ground, and shall be kept completely dry at all times. All structural and miscellaneous steel and reinforcing steel shall be stored off the ground or otherwise to prevent accumulations of dirt or grease, and in a position to prevent accumulations of standing water, staining, chipping, or cracking. Brick, block, and similar masonry products shall be handled and stored in a manner to reduce breakage, chipping, cracking, and spalling to a minimum. 4. All materials which, in the opinion of the Engineer, have become damaged and are unfit for the use intended or specified shall be promptly removed from the site of the Work and the Contractor shall receive no compensation for the damaged material or its removal. 5. The Contractor shall arrange storage in a manner to provide easy access for inspection. The Contractor shall make periodic inspections of stored products to assure products are maintained under specified conditions, and free from damage or deterioration. 6. Protection After Installation: The Contractor shall provide substantial coverings as necessary to protect installed products from damage from traffic and subsequent construction operations. The Contractor shall remove covering when no longer needed. I. Extended Storage Requirements For Equipment: Because of the long period allowed for construction, special attention shall be given to extended storage and handling of equipment onsite. As a minimum, the procedure specified herein shall be followed: 1. If equipment will be stored onsite for more than one month prior to incorporation into the Work, the Contractor shall submit a written request to the Engineer outlining any special provision to be made to protect and maintain the equipment while it is being stored. All such provisions shall be acceptable to the Owner. No equipment shall be stored onsite for more than one month without prior written authorization from the Engineer. 2. All equipment having moving parts including gears, electric motors, and/or instruments shall be stored in a temperature and humidity controlled building accepted by the Engineer, until such time as the equipment is to be installed. 3. All equipment shall be stored fully lubricated with oil and grease unless otherwise instructed by the manufacturer. 4. Manufacturer's storage instructions shall be carefully studied by the Contractor and reviewed by him with the Engineer. These instructions shall be carefully followed and a written record of this review kept by the Contractor. July 2021 Project#19.00305 400500-Page 7 5. Moving parts shall be rotated a minimum of once weekly to ensure proper lubrication and to avoid metal-to-metal "welding". Upon installation of the equipment the Contractor shall start the equipment and operate, loaded when possible, once weekly for an adequate period of time to ensure that the equipment does not deteriorate from lack of use. 6. Lubricants shall be changed upon completion of installation and as frequently as required thereafter during the period between installation and final acceptance. Mechanical equipment to be used in the Work, if stored for longer than ninety (90) days, shall have the bearings cleaned, flushed, and lubricated prior to testing and startup, at no extra cost to the Owner. 7. Prior to acceptance of the equipment, the Contractor shall have the manufacturer inspect the equipment and certify that its condition has not been detrimentally affected by the long storage period. Such certifications by the manufacturer shall be deemed to mean that the equipment is judged by the manufacturer to be in a condition equivalent to that of equipment that has been shipped, installed, tested, and accepted in a minimum time period. As such, the manufacturer will guarantee the equipment equally in both instances. If such a certification is not given, the equipment shall be judged to be defective, and it shall be removed and replaced at the Contractor's expense. 8. A maintenance log shall be maintained by the Contractor outlining the schedule of maintenance required for each piece of equipment as well as the date on which the maintenance was actually performed and the initials of the individual performing the Work. Submit a copy of the maintenance log monthly with the progress pay application. 1.5 WARRANTY AND GUARANTEES A. The manufacturer's written warranty shall be submitted for all major pieces of equipment. The manufacturer's warranty period shall be concurrent with the Contractor's correction period for one (1) year after the time of completion and acceptance. 1.6 SPARE PARTS A. The Contractor shall collect and store all spare parts in an area to be designated by the Engineer. In addition, the Contractor shall furnish to the Engineer an inventory listing of all spare parts, the equipment they are associated with, and the name and address of the supplier. July 2021 Project#19.00305 400500-Page 8 1.7 MAINTENANCE MATERIALS A. All grease, oil, and fuel required for testing of equipment shall be furnished by the Contractor with the respective equipment. The Owner shall be furnished with a year's supply of required lubricants including grease and oil of the type recommended by the manufacturer with each item of equipment supplied. B. The Contractor shall be responsible for changing the oil in all drives and intermediate drives of each mechanical equipment after initial break-in of the equipment, which in no event shall be any longer than three weeks of operation. PART 2 - PRODUCTS 2.1 FABRICATION AND MANUFACTURE A. Workmanship and Materials: 1. Contractor shall guarantee all equipment against faulty or inadequate design, improper assembly or erection, defective workmanship or materials, and leakage, breakage or other failure. Materials shall be suitable for service conditions. 2. All equipment shall be designed, fabricated, and assembled in accordance with recognized and acceptable engineering and shop practice. Individual parts shall be manufactured to standard sizes and gages so that repair parts, furnished at any time, can be installed in the field. Like parts of duplicate units shall be interchangeable. Equipment shall not have been in service at any time prior to delivery, except as required by tests. 3. Except where otherwise specified, structural and miscellaneous fabricated steel used in equipment shall conform to AISC standards. All structural members shall be designed for shock or vibratory loads. Unless otherwise specified, all steel which will be submerged, all or in part, during normal operation of the equipment shall be at least '/4-inch thick. B. Lubrication: 1 . Equipment shall be adequately lubricated by systems which require attention no more frequently than weekly during continuous operation. Lubrication systems shall not require attention during startup or shutdown and shall not waste lubricants. 2. Lubricants of the type recommended by the equipment manufacturer shall be furnished by the Contractor in sufficient quantity to fill all lubricant reservoirs and to replace all consumption during testing, startup, and operation prior to acceptance of equipment by Owner. Unless otherwise July 2021 Project#19.00305 400500- Page 9 specified or permitted, the use of synthetic lubricants will not be acceptable. 3. Lubrication facilities shall be convenient and accessible. Oil drains and fill openings shall be easily accessible from the normal operating area or platform. Drains shall allow for convenient collection of waste oil in containers from the normal operating area or platform without removing the unit from its normal installed position. C. Equipment Foundation Supports: 1. All foundations, platforms and hangers required for the proper installation of equipment shall be furnished and installed by the Contractor. 2. Unless otherwise indicated or specified, all equipment shall be installed on reinforced concrete bases at least 6-inch high and shall conform to Section 03300 - Cast-In-Place Concrete. Cast iron or welded steel baseplates shall be provided for pumps, compressors, and other equipment. Each unit and its drive assembly shall be supported on a single baseplate of neat design. Baseplates shall have pads for anchoring all components and adequate grout holes. Baseplates for pumps shall have a means for collecting leakage and a threaded drain connection. Baseplates shall be anchored to the concrete base with suitable anchor bolts. All open equipment bases shall be filled with nonshrinking grout sloped to drain to the perimeter of the base. 3. The Contractor shall furnish, install and protect all necessary guides, bearing plates, anchor and attachment bolts, and all other appurtenances required for the installation of equipment. These shall be of ample size and strength for the purpose intended. D. Shop Painting: 1. All steel and iron surfaces shall be protected by suitable paint or coatings applied in the shop. Surfaces which will be inaccessible after assembly shall be protected for the life of the equipment. Exposed surfaces shall be finished smooth, thoroughly cleaned, and filled as necessary to provide a smooth uniform base for painting. Electric motors, speed reducers, starters, and other self-contained or enclosed components shall be shop primed or finished with a high-grade oil-resistant enamel suitable for coating in the field with an alkyd enamel. Coatings shall be suitable for the environment where the equipment is installed. 2. Surfaces to be painted after installation shall be prepared for painting as recommended by the paint manufacturer for the intended service, and then shop painted with one or more coats of the specified primer. Unless otherwise specified, the shop primer for steel and iron surfaces shall in accordance with Section 099000 Painting. July 2021 Project#19.00305 400500-Page 10 3. Unless otherwise noted or recommended by the manufacturer, machined, polished, and nonferrous surfaces which are not to be painted shall be coated with rust-preventive compound, Houghton "Rust Veto 344", Rust- Oleum "R-9", or equivalent. E. Nameplates: Contractor shall provide equipment identification nameplates for each item of equipment. 1. All items of equipment listed in the instrument schedule, control panels, and all items of digital hardware shall be identified with nameplates. Each nameplate shall be located so that it is readable from the normal observation position and is clearly associated with the device or devices it identifies. Nameplates shall be positioned so that removal of the device for maintenance and repair shall not disturb the nameplate. Nameplates shall include the equipment identification number and description. Abbreviations p of the description shall be subject to the Engineer's approval. 2. Control panel nameplates shall be made of 1/16 inch thick machine engraved laminated phenolic plastic having white numbers and letters not less than 3/16 inch high on a black background. 3. Field mounted nameplates shall be engraved 316 stainless steel, 22 gauge minimum thickness. 4. Nameplates shall be attached to metal equipment by stainless steel screws and to other surfaces by an epoxy based adhesive that is resistant to oil and moisture. In cases where the label cannot be attached by the above methods, it shall be drilled and attached to the associated device by means of stainless steel wire. F. Noise Attenuation and Control: 1. Unless otherwise specified, the maximum permissible noise level for a complete installed piece of equipment located within or outside a structure shall not exceed 85-dB at 3-feet. A complete piece of equipment includes the driver and driven equipment, plus any intermediate couplings, gears, and auxiliaries. All equipment provided herein that is specified to be factory and field tested shall be tested as specified herein for noise generation at the equipment manufacturer's expense. 2. Maximum permissible noise (sound pressure) levels shall be in decibels as read on the "A" weighting scale of a standard sound level meter (dB); all measurements shall be made in relation to a reference pressure of 0.0002- microbar. Measurements of emitted noise levels shall be made on a sound level meter meeting at least the Type 2 requirements set forth in ANSI/ASA S1.4, Specification for Sound Level Meters. The sound level meter shall be set on the "A" scale and to slow response. Unless otherwise specified for a particular piece of equipment, the point of measurement of sound level July 2021 Project#19.00305 400500-Page 11 shall be made at the specified distance from any major surface along the entire perimeter and at midheight of the piece of equipment, or at the specified distance from an outer major surface encompassing the sound source including inlets or outlets. B. Fire Hazard Rating: 1 . All piping, fastener, and jacketing materials shall have a fire hazard rating not to exceed 25 for flame spread, 50 for fuel contributed, and 50 for smoke developed. Rating shall be determined by ASTM Designation E84, "Surface Burning Characteristics of Building Materials". Corresponding ratings determined by Underwriters' Laboratories, Inc., UL-723, "Test Method for Fire Hazard Classification of Building Materials", will also be acceptable. 2. Flameproofing treatments will not be acceptable. 2.2 ACCESSORIES C. Special Tools and Accessories: Equipment requiring periodic repair and adjustment shall be furnished complete with all special tools, instruments, and -- accessories required for proper maintenance. Equipment requiring special devices for lifting or handling shall be furnished complete with those devices. D. Fasteners: All nuts, bolts, anchors and other fastening devices shall be a minimum of 304 stainless steel unless otherwise specified. If the nuts, bolts, anchors, and other fastening devices are subject to corrosive environments they shall be a minimum of 316 stainless steel unless otherwise specified. PART 3 - EXECUTION 3.1 INSTALLATION AND OPERATION A. Installation 1 . Pipe and Fittings a. Trenches shall be maintained in a dry condition at all times unless otherwise approved by the Engineer. b. Swabs shall be installed during installation for flushing purposes. July 2021 Project#19.00305 400500- Page 12 c. Maintain horizontal and separation of water from sewer and stormwater piping in accordance with the FDEP requirements. Sewer should always be below water on vertical separations. d. Install pipe to indicated elevation to within tolerance of %-inches. Minimum cover shall be 36-inches unless otherwise stipulated or authorized by the Owner. e. Install DIP and fittings to comply with requirements of AWWA C600. Install PVC Piping to comply with Uni-B-3 recommended practices. Install HDPE piping to comply with Mini-Horizontal Directional Drilling Manual. All tapping shall be done with a tapping machine designed for this specific service. All pipe cutting shall be accomplished by power-operated abrasive wheel or saw cutters. f. Install pipe to allow for expansion and contraction without stressing pipe or joints. g. Install access fittings to permit the disinfection for potable water system. h. All fittings and valves shall be restrained with megalug or equal retainer glands. All stubs shall be restrained with a minimum of 80- lineal feet of pipe beyond the valve. Where this is not possible, utilize Owner approved retaining glands. Pipe shall be laid in a level trench. Hand trim excavation for accurate placement of pipe to elevations indicated. The width of trenches for installation of all lines shall be in accordance with the pipe manufacturer recommendations, OSHA safety requirements, and all applicable codes. Trench widths shall not be less than necessary for safe and proper construction. Where required, excavation support systems shall be provided. j. Installation and restoration operation under roads, shoulders or other level areas shall be performed in compliance with any local, County or State requirements, which ever may apply. k. Every effort shall be made to cover pipe ends during installation and a watertight plug or other approved seal must be used when installation is not in progress. The inspector, to minimize public inconvenience or danger to life or property, may limit length of an open trench on existing roads. m. At the completion of pipe installation, contractor must pig lines to clean and remove any foreign debris from potable water piping main July 2021 Project#19.00305 400500- Page 13 prior to doing disinfection. For wastewater piping lines must be cleaned and free of any foreign debris. 2. Connections to Existing Lines a. Where connections are required to be made between new piping and existing piping, the connection shall be made in a thorough and workmanlike manner using proper materials, fittings, and labor practices to suit the existing materials and conditions. b. Where a connection is made to an existing fitting, the contractor shall schedule his work so that the excavation and location of this existing fitting can be completed prior to starting trench work on the line. c. The Contractor under the direction of the Owner shall do all taps to existing lines in the presence of the Owner's Utilities Inspector, unless otherwise approved. d. Whenever it is required to interrupt existing water supplies to residences or businesses, the contractor shall notify all concerned parties or agencies at least 72 hours in advance of such cut-off. Contractor must first obtain approval from the Owner. B. Equipment shall not be installed or operated except by, or with the guidance of, qualified personnel having the knowledge and experience necessary for proper results. When so specified, or when employees of Contractor or his subcontractors are not qualified, such personnel shall be field representatives of the manufacturer of the equipment or materials being installed. 1. The Contractor shall have on site sufficient proper construction equipment and machinery to facilitate the work and to handle all emergencies normally encountered in work of this character. To minimize field erection problems, mechanical units shall be factory assembled when practical. 2. Equipment shall be erected in a neat and workmanlike manner on the foundations and supports at the locations and elevations shown on the Contract Drawings, unless otherwise directed by the Engineer during installation. 3. All equipment shall be installed in such a manner as to provide access for routine maintenance including lubrication. 4. For equipment which require field alignment and connections, the Contractor shall provide the services of the equipment manufacturer's qualified mechanic, millwright, machinist, or authorized representative. 5. Equipment of a portable nature which requires no installation shall be delivered to a location designated by the Owner. July 2021 Project#19.00305 400500-Page 14 C. Tolerances: Precision gauges and levels shall be used in setting all equipment. All piping and equipment shall be perfectly aligned, horizontally and vertically. Tolerances for piping and equipment installation shall be 1/2-inch to 30-feet horizontal and vertically. All valves and operators shall be installed in the position shown on the Contract Drawings or as directed by the Engineer, if not shown. D. Alignment and Level: The equipment shall be brought to proper level by shims (1/4-inch maximum). After the machine has been leveled and aligned, the nuts on the anchor bolts shall be tightened to bind the machine firmly into place against the wedges or shims. E. Grouting: The grout shall be tamped into position with a board, steel bar, or other tool. Tamping should not be so hard as to raise or otherwise displace the plate. F. Contact of Dissimilar Metals: Where the contact of dissimilar metal may cause electrolysis and where aluminum will contact concrete, mortar, or plaster, the contact surface of the metals shall be separated using not less than one coat of zinc chromate primer and one heavy coat of aluminum pigmented asphalt paint on each surface. G. Cutting and Patching: All cutting and patching necessary for the Work shall be performed by the Contractor. H. Operation: All equipment installed under this Contract, including that furnished by Owner or others under separate contract, shall be placed into successful operation according to the written instructions of the manufacturer or the instructions of the manufacturer's field representative. All required adjustments, tests, operation checks, and other startup activity shall be provided. 3.2 TESTING A. When the equipment is specified to be factory tested, the results of the tests shall be submitted to the Engineer and approval of the test results shall be obtained before shipment of the equipment. B. When an item of equipment, including controls and instrumentation, has been completely erected, the Contractor shall notify the Engineer, who will designate a time to make such tests as required, and operate the item to the satisfaction of the Engineer. All testing shall be done in the presence of the Engineer or Resident Project Representative. "Completely erected" shall mean that the installation is erected, all necessary adjustments have been made, all required utility connections have been made, required lubricants and hydraulic fluid have been added and the unit has been cleaned and painted. C. Pressure Test: Pressure testing for piping shall be performed in accordance with Section 330505— Pressure Testing of Piping. July 2021 Project#19.00305 400500- Page 15 D. Failure of Test: 1. Defects: Any defects in the equipment, or deviations from the guarantees or requirements of the Specifications, shall be promptly corrected by the Contractor by replacements or otherwise. The decision of the Engineer as to whether or not the Contractor has fulfilled his obligations under the Contract shall be final and conclusive. If the Contractor fails to correct any defects or deviations, or if the replaced equipment when tested shall fail again to meet the guarantees or specified requirements, the Owner, notwithstanding his having made partial payment for work and materials which have entered into the manufacturer for such equipment, may reject that equipment and order the Contractor to remove it from the premises at the Contractor's expense. 2. Rejection of Equipment: In case the Owner rejects a particular item of equipment, then the Contractor hereby agrees to repay to the Owner all sums of money paid to him to deliver to the Contractor a bill of sale of all his rights, title, and interest in and to the rejected equipment provided, however that the equipment shall not be removed from the premises until the Owner obtains from other sources other equipment to take the place of that rejected. The bill of sale shall not abrogate the Owner's right to recover damages for delays, losses or other conditions arising out of the basic Contract. The Owner hereby agrees to obtain the alternate equipment within a reasonable time and the Contractor agrees that the Owner may use the original equipment furnished by him without rental or other charge until the other equipment is obtained. E. Responsibility During Tests: The Contractor shall be fully responsible for the proper operation of equipment during tests and instruction periods and shall neither have nor make any claim for damage which may occur to equipment prior to the time when the Owner formally takes over the operation thereof. 3.3 OBSERVATION OF PERFORMANCE TESTS A. Where the specifications require observation of performance tests by the Engineer or Resident Project Representative, such tests shall comply with the quality assurance paragraph in this Section. 3.4 MANUFACTURER'S FIELD SERVICES A. Services Furnished Under This Contract: 1. An experienced, competent, and authorized representative of the manufacturer of each item of equipment shall visit the site of the Work and inspect, check, adjust if necessary, and approve the equipment installation. In each case, the manufacturer's representative shall be present when the July 2021 Project#19.00305 400500-Page 16 equipment is placed in operation. The manufacturer's representative shall revisit the jobsite as often as necessary until all trouble is corrected and the equipment installation and operation are satisfactory in the opinion of Engineer. 2. Each manufacturer's representative shall furnish to Owner and Engineer a p g letter of certification stating that the equipment has been properly installed and lubricated; is in accurate alignment; is free from any undue stress imposed by connecting piping or anchor bolts; and has been operated under full load conditions and that it operated satisfactorily. 3. All costs for field services shall be included in the contract amount. END OF SECTION 400500 July 2021 Project#19.00305 400500- Page 17 THIS PAGE INTENTIONALLY LEFT BLANK SECTION 400507 HANGERS AND SUPPORTS PART 1 - GENERAL 1.1 DESCRIPTION A. Scope of Work: Furnish and install all pipe supports as indicated and as specified herein. B. Number and Location: The Contract Drawings depict only minimum pipe support locations. Adequate pipe supports shall be supplied for all piping systems to provide a rigid overall installation and additional support for pipe ends when equipment is disconnected. 1.2 SUBMITTALS A. Submit to the Engineer in accordance with Section 013300 — Submittal Procedures. B. Submit manufacturer's descriptive literature for all pipe support devices and materials demonstrating compliance with this section and the support details shown on the Contract Drawings. 1.3 QUALITY ASSURANCE A. Qualifications: 1. All equipment furnished under this Specification shall be new and unused and shall be a standard product which has a successful record of reliable service in similar installations for a minimum of 5 years. B. Standards: Design, manufacturing and assembly of elements of the products herein specified shall be in accordance with, but not limited to, published standards of the following as applicable: 1. American National Standards Institute (ANSI) 2. American Society of Mechanical Engineers (ASME) a. ANSI/ASME B16.1 and B16.5 — Pipe Flanges and Flanged Fittings Package July 2021 Project#19.00305 400507- Page 1 3. American Society for Testing and Materials (ASTM) a. ASTM A123 — Standard Specification for Zinc (Hot-Dip Galvanized) Coatings on Iron and Steel Products b. ASTM A320 — Standard Specification for Alloy-Steel and Stainless Steel Bolting for Low-Temperature Service c. ASTM D1785 — Standard Specification for Poly(Vinyl Chloride) (PVC) Plastic Pipe, Schedules 40, 80, and 120 4. American Iron and Steel Institute (AISI) 5. American Water Works Association (AWWA) a. AWWA/ANSI C150/A21.50 —Thickness Design of Ductile-Iron Pipe b. AWWA/ANSI C151/A21.51 — Ductile Iron Pipe, Centrifugally Cast 6. Where reference is made to standards of one (1) of the above, or other originations, the latest edition or version shall apply. C. Warranty: Provide manufacturer's warranty in accordance with the Division 01 - General Requirements. PART 2 - PRODUCTS 2.1 PIPING SUPPORTS FOR METAL PIPE A. Furnish and install supports necessary to hold the piping and appurtenances in a firm, substantial manner at the lines and grades indicated on the Contract Drawings or specified. Piping supports and hangers shall conform to Federal Specification WW-H-171 or shall be as specifically shown or indicated on the Contract Drawings. Piping within structures shall be adequately supported from floors, walls, ceilings or beams. Supports from the floor shall be approved flange supports, saddle stands or suitable concrete piers as indicated or approved. Pipe saddles shall be shaped to fit the pipe with which they will be used and shall be capable of screw adjustment. B. Concrete piers shall conform accurately to the bottom IA to of the pipe. Piping along walls shall be supported by approved wall brackets with attached pipe rolls or saddles or by wall brackets with adjustable hanger rods. For piping supported from the ceiling, approved rod hangers proportioned for the size of pipe to be supported and of a type capable of screw adjustment after erection of the pipeline, with suitable adjustable concrete inserts or beam clamps, shall be used. The use of perforated band iron strap (plumber's strap), wire, or chain as pipe July 2021 Project#19.00305 400507- Page 2 hangers will not be acceptable. If required, piping supports shall be placed so as to provide a uniform slope in the pipe without sagging. Supports shall be located wherever necessary in the opinion of the Engineer; however, in no case shall they exceed the dimensions shown herein. Adequate supports shall especially be used adjacent to valves and fittings in pipelines. Fabricated steel or cast iron pipe supports, saddles, rolls, brackets and the like shall be as manufactured by Grinnell or an approved equal by the Engineer. C. All fabricated steel or cast iron pipe supports, saddles, rolls, brackets, devises, and the like shall be hot dip galvanized after fabrication and/or machining in accordance with ASTM A123. All nuts, bolts, clips and other hardware, and all hanger rods used for pipe supports, shall be AISI Type 316 stainless steel. All nuts, bolts and threaded rods shall be in accordance with ASTM A320, Class 2. All such devices shall be painted in accordance with Section 099000 Painting, after installation. 2.2 PIPE SUPPORTS FOR PLASTIC PIPE A. Single plastic pipes shall be supported by pipe supports as previously specified herein. B. Multiple, suspended, horizontal plastic pipe runs, where possible, and rubber hose shall be supported by ladder type cable trays such as the Electray Ladder by Husky-Burntly, the Globetray by the Metal Products Division of United States Gypsum, or equal. Ladder shall be of mild steel construction. Rung spacing shall be approximately 18 inches for plastic pipe and 12 inches for rubber hose. Tray width shall be approximately 6- inch for single runs of rubber hose and 12 inches for double runs of rubber hose. Ladder type cable trays shall be furnished complete with all hanger rods, rod couplings, concrete inserts, hanger clips, etc. required for a complete support system. Individual plastic pipes shall be secured to the rungs of the cable tray by strap clamps or fasteners equal to Globe Model M-CAC, Husky-Burndy Model SCR or approved equal. Spacing between clamps shall not exceed 9 feet. The cable trays shall provide continuous support along the length of the pipe. C. Individual clamps, hangers, and supports in contact with plastic pipe shall provide firm support but not so firm as to prevent longitudinal movement due to thermal expansion and contraction. 2.3 PIPE SUPPORTS FOR SMALL DIAMETER PVC PIPE AND STEEL PIPE A. Small diameter PVC piping 4-inches in diameter and smaller, shall be supported with AISI Type 316 stainless steel pipe supports. Hardware used for pipe supports shall be AISI Type 316 stainless steel. July 2021 Project#19.00305 400507-Page 3 B. In some cases, to adequately support small diameter PVC or steel piping, a metal frame support structure may be required for support of the piping system. Where required, metal frame support structures shall be constructed using channels, fittings, brackets, hardware and other accessories as manufactured by B-Line Systems, Inc. or an approved equal by the Engineer. The materials for the frame structure shall be Type 316 stainless steel unless otherwise noted on the Contract Drawings. Hardware used to construct the frame support structure shall be Type 316 stainless steel. C. Pipe supports for small diameter PVC and steel piping shall be located wherever necessary in the opinion of the Engineer to adequately support the pipe; however, they shall have a maximum spacing as specified hereinafter for straight pipe runs. Adequate supports shall especially be used adjacent to valves and fittings in pipelines. PART 3 - EXECUTION 3.1 INSTALLATION A. General: 1. Install hangers or supports at all changes in direction at the spacing requirements stated in this specification and at the end of piping runs to minimize the stresses imposed on piping, valves, associated equipment and appurtenances. 2. Piping support systems and accessories shall be installed in accordance with the manufacturer's installation instructions. 3. Install all hangers, supports, rods, inserts, clamps, bolts and other supporting devices of sizes and spacings to prevent loads from exceeding the manufacturer's maximum recommended loading with a safety factor of 5.0. 4. Secure hangers to beams or approved concrete insert where possible. 5. When piping is installed on structural steel supports, provide blocking of pipe rolls to prevent lateral pipe movement. 6. Do not support piping from other pipes or from stairs and walkways. 7. Wherepossible, set all inserts or anchor bolts before concrete is placed. July 2021 Project#19.00305 400507- Page 4 B. Expansion and Contraction: 1. Rigidly support all piping with adequate provisions for expansion and contraction. 2. Firmly anchor horizontal runs over 50-feet in length at the midpoint of the runs to force expansion equally toward the ends. C. Spacing: 1. Install hangers and supports at sufficiently close intervals to maintain alignment and prevent sagging. 2. The following table is based on spacing requirements for hard drawn copper tube, Class 53 DIP, Schedule 80 PVC, or Standard Weight (Schedule 40) steel pipe carrying a fluid with a Specific Gravity of 1.0 at a temperature not exceeding 120°F. Support spacing for other pipe materials or for piping carrying fluids with a Specific Gravity or temperature exceeding those stated above shall be approved by the Engineer. Maximum spacing of hangers and supports shall be as follows: Support Spacing, Feet Nominal Pipe Ductile Copper Iron Plastic Steel Diameter, (inches) 1/2 4.0 N/A 3.5 4.5 3/ 4.0 N/A 4.0 5.0 1 4.0 N/A 4.5 5.5 1'/ 6.0 N/A 5.0 6.5 1'/2 6.0 N/A 5.0 7.5 2 6.0 N/A 5.5 8.0 2'/2 6.0 N/A 5.5 8.0 3 6.0 N/A 6.0 8.0 4 N/A 8.0 7.0 8.0 Larger than 4 N/A See Note N/A See Note July 2021 Project#19.00305 400507- Page 5 Note: Spacing shall be 10 feet maximum but may be increased depending on pipe size. Refer to AWWA standard of practice. D. Supporting Vertical Piping: 1. Support at a maximum of 10-feet spacing. 2. Support at all points necessary to ensure rigid installation with adequate provisions to allow expansion and contraction and prevent vibration. 3. Support by approved pipe collars, clamps, brackets, or wall rests. E. Supporting PVC: 1. Support in strict accordance with the manufacturer's instructions and recommendations for the conditions of operation, temperature, and size of pipe. 2. Support in a manner which will prevent subsequent visible sagging of the pipe between supports due to plastic deformation. F. Drain, Waste, and Vent Piping: Support by adjustable hangers. G. Valves, Fittings, and Specialties: Independently support pipe, valves, and specialties connected to pumps and equipment. H. Temporary Pipe Supports: 1. Lay out each section of pipeline and make connections while the pipe is held in temporary supports. 2. After the completion of connections in each section of pipeline, hold the section in place with temporary clamps. 3. Do not remove the temporary clamps until the piping is correctly installed on the permanent supports. 3.2 PAINTING A. All fabricated steel or cast iron pipe supports, saddles, brackets, rolls, clevises and the like shall be painted, after installation, as specified in Sections 099000 — Painting. END OF SECTION 400507 July 2021 Project#19.00305 400507- Page 6 SECTION 400551 VALVES PART 1 - GENERAL 1.1 SUMMARY A. Section Includes: 1. Plug Valves. 2. Check Valves. 3. Butterfly Valves 4. Ball Valves. 5. Globe Valves. 6. Valve Accessories. B. Some products specified in this Section may not be required for this Contract. Refer to piping system Specification section(s) and Drawings to determine particular products to be provided under this Contract. 1.2 REFERENCES A. ANSI: American National Standards Institute B. ASTM: American Society for Testing and Materials C. ASME: American Society of Mechanical Engineers D. AWWA: American Water Works Association E. ISO: International Organization for Standardization F. MSS: Manufacturers Standardization Society G. NEMA: National Electrical Manufacture's Association H. NSF: National Sanitation Foundation 1.3 SUBMITTALS A. Product Data and Shop Drawings: July 2021 Project#19.00305 400551- Page 1 1. Submit in accordance with Section 013300 in sufficient detail to confirm compliance with the Drawings and this Section. 2. Submittal shall, at a minimum, include the items listed below. a. Manufacturer's product data for each type of valve. b. Motor data. Submit in accordance with Section 110513. c. Coating systems. Submit in accordance with Section 099000. d. Valve schedule. Identify all valves by type number, pipeline, location, joint type, manufacturer, and model or catalog number. B. Instructional Services Documentation: 1. Submit in accordance with Section 016000. C. Operation and Maintenance (O&M) Data: 1. Submit in accordance with Section 017823 D. Provide AIS certification. 1.4 QUALITY ASSURANCE A. Manufacturer shall be responsible for all components identified for each valve type, accessory, and actuator specified in this Section. 1.5 WARRANTY A. Manufacturer shall furnish written one year standard warranty from date of substantial completion to guarantee there shall be no defects in material or workmanship in any item supplied. 1.6 PRODUCT DELIVERY, STORAGE, AND HANDLING A. All equipment and parts shipped to the job site shall be properly protected from the elements so that no damage or deterioration occurs from the time of delivery to the time when the installation is completed and the units are placed into operation. B. Manufacturer shall define the requirements to properly protect the equipment and parts shipped to the job site. July 2021 Project#19.00305 400551-Page 2 PART 2 - PRODUCTS 2.1 GENERAL A. All valves shall be complete with all necessary operating hand wheels, chain wheels, extension stems, worm and gear operators, operating nuts, chains, wrenches, and other accessories that are required for proper completion of Work included under this section. B. Valves installed in insulated piping systems shall be furnished with extended stem as required to allow operation of valve without damage to, or interference with, insulation system. C. Unless otherwise shown, valves shall be same size as adjoining pipe. D. All units shall have name of manufacturer and size of valve cast on body or bonnet or shown on permanently attached plate in raised letters. E. Service for all items specified herein are shown on Drawings or in Specifications. Note, this is a general specification; some types listed herein may not be part of the Work. 2.2 CHECK VALVES A. PVC Ball Check Valve 1. Manufacturers: a. Spears Manufacturing. b. Hayward Industrial Products, Inc. c. Asahi/America d. Or equal. 2. Ball check valve. 3. Provide sizes as indicated on Drawings. 4. PVC construction, ASTM D1784. 5. Valve shall be true union type. 6. Provide with socket weld joints. 7. Viton seats and seals. 8. 0-rings shall be EPDM. July 2021 Project#19.00305 400551-Page 3 9. All valve unions and nuts shall have Buttress threads. 10. Valve shall be suitable for installation in the vertical or horizontal position. 11. Rated for 150-psi at 73 deg F. B. Disc Check Valve 1. Manufacturers: a. Val-Matic b. Cla-val c. Or equal. 2. Furnish and install sizes as indicated on the Drawings. 3. Valves shall be designed, manufactured, and tested in accordance with ANSI/AWWA C518. 4. For use in potable water systems, valves shall be certified lead-free in accordance with NSF/ANSI 61. 5. Valves shall be wafer-style for installation between flanges as specified within other sections. 6. The valve body shall be constructed of ASTM A536 Grade 65-45-12 ductile iron. The disc shall be cast bronze with Type 316 stainless steel pivot and stop pins. The torsion spring shall be Type 316 stainless steel. The valve shall incorporate a Buna-N seal. 7. Valves shall have a maximum cracking pressure of 0.25 psi. 2.3 BUTTERFLY VALVES FOR AIR SERVICE A. Butterfly valves shall be high performance lugged style 316 stainless steel body ASTM A351 Type CF8M, ANSI B16 with a solid 316 stainless steel shaft and disc. Fabric PTFE bearings, PTFE/Titanium seat and PTFE V-flex packing shall be provided. B. Valves shall be fully assembled and tested with their actuators prior to shipment. C. Valves shall be manufactured by Bray, Pratt, Keystone, DeZurik or equal. 2.4 BALL VALVES A. PVC, Socket-Weld Ball Valve July 2021 Project#19.00305 400551- Page 4 1. Manufacturers: a. Spears Manufacturing. b. Nibco. c. Hayward Industrial Products, Inc. d. Or equal. 2. 3-inch and smaller. 3. Provide sizes as indicated on Drawings. 4. PVC construction, ASTM D1784. 5. Valve shall be true union type. 6. Provide with socket weld joints. 7. Full-port. 8. Vented Ball. 9. PTFE ball seats. 10. 0-rings shall be EPDM. 11. All valve unions and nuts shall have Buttress threads. 12. Rated for 150-psi at 73 deg F. 13. Unless indicated otherwise, provide with double-stop polypropylene handle operator. B. Stainless Steel, Threaded Water Service Ball Valve 1. Manufacturers: a. Apollo b. Nibco c. DeZurik d. Or Equal. 2. 3-inch and smaller for water service on stainless steel piping systems. July 2021 Project#19.00305 400551-Page 5 3. Comply with MSS-SP-110. 4. Conventional port, two-piece stainless steel body for threaded valves. 5. Conventional port, three-piece stainless steel body for socket weld valves. 6. Stainless steel ball and stem. 7. Reinforced TFE Seats. 8. 1000 psi CWP. 2.5 ACCESSORIES A. Valve Actuators: 1. Open by turning counter-clockwise. 2. Valves with centerline 5-feet 6-inch or less above operating floor: Handwheel for gear- actuated valves, lever for lever-actuated valves. Shall require no more than 40-pound effort to unseat valve. 3. Valves 4-inch and larger, unless otherwise noted on drawings, with centerline greater than 5-feet 6-inch above operating floor: Chainwheel. 4. Valves 4-inch and smaller, maximum operating pressure 25 psig and less: Lever. 5. Valves 4-inch and smaller, maximum operating pressure greater than 25 psig: Gear. 6. Valves 6-inch and larger: Gear. B. Buried and Submerged Valves: 1. Provide seals on shafts and gaskets on valve and actuator covers to prevent water entry. 2. Provide totally enclosed actuator mounting brackets with gasket seals. C. Valve Boxes: 1. Provide for buried valves. 2. Three-piece screw type, cast iron box and cover. 3. Valve box diameter 5 '/4-inch, length as required for installation. July 2021 Project#19.00305 400551-Page 6 4. Provide 316L stainless steel extension stem as required for installation and 2-inch operating nut located within 6-inches from top of cover. D. Worm and Gear Actuators: 1. Totally enclosed design. 2. Sized for valve operation under valve rated pressure with pull of 40- pounds on handwheel or chain wheel. 3. Self-locking to prevent valve position creep. 4. Hardened alloy steel worm. 5. Reduction gearing runs in lubricant. 6. Orient operators to avoid interference with adjacent piping, equipment, and structures. 7. Include valve position indication. 2.6 COATINGS A. Manufacturer is responsible for surface preparation and application of first coat (prime coat) of equipment prior to shipment. Coatings shall comply with Section 099000. B. Contractor shall provide finish coats at Project Site. Finish coat products shall be manufactured by same manufacturer of first coat (prime coat). C. Stainless steel, bronze, and nonmetallic surfaces shall not be coated. D. Coat machined or bearing surfaces and holes with protective grease. PART 3 - EXECUTION 3.1 INSTALLATION A. Install valves in accordance with manufacturer's written recommendations and approved submittals. B. Bolt holes of flanged valves shall straddle the vertical centerline of the pipe run. Before installing flanged valves, the flanged faces shall be thoroughly cleaned. After cleaning, insert gasket and bolts, and tighten the nuts progressively and uniformly. If flanges leak under pressure, loosen or remove the nuts and bolts, reseat or replace the gasket, retighten and/or reinstall the nuts and bolts, and retest the joints. July 2021 Project#19.00305 400551-Page 7 C. Provide equipment identification marker complete with equipment name and tag number. Coordinate field location with Engineer. 3.2 FIELD QUALITY CONTROL A. Tests: 1. Pressure test valves at same time connected piping is tested. 2. Repair leaking joints. 3. Protect parts of valves and actuators that could be damaged by test. END OF SECTION 400551 July 2021 Project#19.00305 400551-Page 8 SECTION 401223 AERATION PIPING AND APPURTENANCES PART 1 - GENERAL 1.1 RELATED DOCUMENTS A. Drawings and general provisions of the Contract, including Modified General and Supplementary Conditions and Division 01 Specification Sections, apply to this Section. 1.2 SCOPE OF WORK A. The work included under this Section consists of furnishing and installing the aeration piping and appurtenances for the transmission and distribution of compressed air as shown on the Drawings and specified herein. Aeration piping shall be ductile iron, black steel or galvanized steel as shown on the drawings. B. Unless otherwise noted, all materials and equipment supplied under this Section shall be new, of good quality, and in good condition. 1.3 QUALITY ASSURANCE A. All aeration piping shall be provided by a single manufacturer, with at least five (5) years of experience in manufacturing ductile iron, black steel or galvanized steel pipe. B. All piping materials shall bear label, stamp, or other markings of specified testing agency. 1.4 SUBMITTALS A. The Contractor shall submit complete shop drawings to Engineer for review and approval to include at least the following: 1. Descriptive literature and catalog cut data. 2. Manufacturer's certification of factory tests. July 2021 Project#19.00305 401223—Page 1 1.5 DELIVERY, STORAGE AND HANDLING A. The Contractor shall coordinate material deliveries with the manufacturer/supplier. All materials shall be handled and stored in accordance with the manufacturer's recommendations using methods that will prevent damage to the materials. B. The Contractor shall unload pipe and appurtenances so as to avoid deformation or other injury thereto. Pipe shall not be placed within pipe of a larger size and shall not be rolled or dragged over gravel or rock during handling. If any defective material is discovered after installation, it shall be removed and replaced with sound pipe or shall be repaired by the Contractor in an approved manner and at his own expense. C. The Contractor shall store all pipe and appurtenances on sills above storm drainage level and deliver for installation after the trench is excavated. D. Protect pipe, pipe fittings, and seals from dirt and damage. E. Handle all materials in accordance with the manufacturer's written instructions. F. When any material is damaged during transporting, unloading, handling or storing, the undamaged portions may be used as needed, or, if damaged sufficiently, the Engineer will reject the material as being unfit for installation. 1.6 WARRANTY A. The manufacturer shall warrant the material to be free of defects in workmanship or material for a period of one (1) year from the date of final acceptance by the Owner. PART 2 - PRODUCTS 2.1 DUCTILE IRON PIPE, FITTINGS AND ACCESSORIES A. Above Ground Piping: 1. Ductile Iron Pipe: Aeration piping shall be flanged, unlined Class 53 ductile iron pipe conforming to ANSI/AWWA C150/A21 .50. 2. Fittings: Fittings shall be flanged ductile iron, compact fittings, with a minimum 250 psi pressure rating. 3. Gaskets: Gaskets shall be EPDM, rated for 250 degree F temperature and suitable for compressed air transmission service. July 2021 Project#19.00305 401223—Page 2 B. Underground Piping: 1. Ductile Iron Pipe: Buried air piping shall be unlined and have mechanical restrained joints and shall be pressure class 350. 2.2 STEEL PIPE, FITTINGS AND ACCESSORIES A. All steel aeration piping shall be standard weight, Schedule 40 welded or seamless pipes of USA manufacture without an interior lining and shall conform to the requirements of ASTM Specification A 53. Pipe shall be hot-dipped, zinc coated unless specifically indicated to be black. B. Steel pipe fittings shall conform to ANSI B16.3. C. Flanges shall be rated at 125 PSI and conform to ANSI B16.5. D. Steel pipe unions shall conform to ANSI B16.39. E. Expansion Joints shall be compound, galvanized steel fittings with a telescoping body and slip-pipe section. Include packing rings, packing, limit rods, chrome- plated finish on slip-pipe sections, and flanged ends. F. Unless otherwise noted, all fittings, flanges, unions, and accessories, unless otherwise noted, shall be wrought steel, cast steel, or malleable iron having a minimum working pressure of 150 psi. G. Above-Ground and Underground Piping: 1. 4 inches and Smaller (Galvanized Steel Pipe or Black Steel Pipe): a. Steel pipe and fittings shall utilize threaded and coupled joints. 2. 6 inches and Larger (Black Steel Pipe): a. Steel pipe and fittings shall utilize plain end, welded or flanged joints. 2.3 STAINLESS STEEL PIPE, FITTINGS AND ACCESSORIES A. Pipe 8" and smaller shall be Schedule 40 and larger than 8" shall be Schedule 10. B. Pipes shall be manufactured from ASTM-A240 annealed and pickled sheets and plates and shall conform to ASTM-A312 in Grade TP 304L stainless steel. Pipe shall be manufactured to nominal pipe sizes as listed in ANSI B36.19. All stainless steel pipes shall have a maximum temperature of 300 degrees. July 2021 Project#19.00305 401223-Page 3 C. Fittings shall be butt weld type manufactured in accordance with ASTM A-403 of the same grade (alloy) and in the same thickness as the pipe. Long radius elbows (i.e. centerline to end of elbow equals 1.5 times the nominal pipe size) up to 24-inch diameter shall be smooth flow type. Reducers may be straight tapered, cone type. Tees, crosses, laterals and wyes may be shop fabricated from the specified pipe. D. The finish on the raw material, manufactured to ASTM-A240 will be No. 1 , HRAP (hot rolled annealed and pickled) or better. The finish on the completed pipe and fittings shall be as specified in ASTM-A312 and A-403, respectively. E. Pipes shall be straight within a maximum 1/8-inch tolerance within 10-linear feet. F. All pieces shall be marked with gauge and type of stainless steel. 2.4 COATINGS: A. The exterior of all above ground aeration piping not exposed to wastewater shall include a rust inhibitor primer (2.5 mil, DFT), and two (2) coats of alkide (1 .5 mils DFT per coat). The exterior of all above ground aeration piping subject to wastewater submergence or splashing shall have an epoxy primer (5.0 mils DFT), and one coat of coal tar epoxy (10 mils DFT). PART 3 - EXECUTION 3.1 PREPARATION A. Interruption of Existing Aeration Service: Do not interrupt aeration service to facilities occupied by Owner or others unless permitted under the following conditions: 1 . Notify Owner not less than three (3) days in advance of proposed interruption of aeration service. 2. Do not proceed with interruption of aeration service without Owner's written permission. 3. If required by Owner, provide temporary aeration service as required to maintain necessary service to existing facilities. 3.2 PIPING INSTALLATION A. Installation of aeration piping shall be in accordance with the manufacturer's recommendations. The Contractor shall provide a copy of the installation instructions to the Engineer if so requested. B. Install aeration piping with 1 percent slope downward in direction of airflow. July 2021 Project#19.00305 401223-Page 4 C. Install eccentric reducers where piping is reduced in direction of flow, with bottoms of both pipes and reducer fitting flush. D. Install branch connections to aeration mains from top of main. Provide drain leg and drain trap at end of each main and branch and at low points. E. Install flexible pipe connector on each connection to air compressors/blowers. 3.3 VALVE INSTALLATION A. Install a shutoff valve at each connection to and from aeration equipment and accessories. Install strainer if indicated. B. When indicated, install check valves to maintain correct direction of air flow to and from aeration piping, equipment and accessories. C. Install safety valves where recommended by equipment manufacturers. 3.4 JOINT CONSTRUCTION A. Threaded Joints: 1. Threaded joints shall be made perfectly tight with a stiff mixture of graphite and mineral oil, or an approved, non-toxic, non-hardening, pipe joint compound applied to the male threads only. 2. All exposed threads, wrench marks, or other damage to the zinc coating, shall be protected by the application of two coats of a heavy consistency, bituminous paint, or with two wraps of an approved vinyl or poly vinyl pressure sensitive tape. Bituminous paint shall be applied. Tape shall be 0.010 inches thick and installed over a primer as recommended by the manufacturer. B. Welded Joints: 1. Pipe ends shall be provided to suit the field joints indicated on the drawings. Field welded joints shall be single (outside) lap or butt type. 2. Field welding shall conform to AWWA Standard C 206. C. Use dielectric fittings for joints in dissimilar metal piping materials. 3.5 CONNECTIONS A. Drawings indicate general arrangement of piping, fittings, equipment and accessories. July 2021 Project#19.00305 401223-Page 5 B. Install piping adjacent to equipment and accessories to allow for service and maintenance. C. Connect piping to equipment and accessories with shutoff valve and union or flanged connection. 3.6 FIELD QUALITY CONTROL A. Piping Leak Testing: Test new and modified parts of existing piping. Cap and fill aeration piping with oil-free dry air to pressure of 15 psig above system operating pressure, but not less than 50 psig. Isolate test source and let stand for four hours to equalize temperature. Refill system, if required, to test pressure; hold for a minimum of two (2) hours with no drop in pressure. Repair leaks and repeat test until no leaks exist. The Contractor shall provide additional system valves to isolate sections of the system for testing if so desired. END OF SECTION 401223 July 2021 Project#19.00305 401223-Page 6 SECTION 431133 ROTARY LOBE COMPRESSORS PART 1 - GENERAL 1.1. SCOPE OF WORK A. Furnish all labor, materials, equipment and incidentals required and install complete, ready for operation and field-test one (1) new rotary lobe compressors and appurtenances, as shown on the Drawings and as specified herein. B. The entire package and its components shall comply with all applicable safety and environmental regulations. 1.2. RELATED WORK A. Valves, except as otherwise specified herein, are included in Section 400551 - Valves and Appurtenances. B. Instrumentation work, except as otherwise specified herein, is included in Division 26. C. Electrical work, except as otherwise specified herein, is included in Division 26. 1.3. SUBMITTALS A. Submit copies of all materials required to establish compliance with this Section. Submittals shall include at least the following information: 1 . Certified general arrangement drawings showing materials, details of construction, dimensions and connections. 2. Complete Performance Data at the Design Point and all specified operating points including: a. Actual Operating Speed (RPM) and % of maximum rated speed b. Capacity — scfm and icfm c. Design inlet conditions, pressure, temperature and relative humidity(%) d. Discharge pressure e. dB(A) noise pressure level f. Blower Shaft HP, Motor HP and Package HP 3. List of recommended spare parts broken down into on hand parts and long term for 2 years operation and 3 to 5 years operation. July 2021 Project#19.00305 431133- Page 1 4. Descriptive Brochures 5. Motor Data 6. Instrumentation and Wiring Diagram 7. ISO-1217 Factory Performance Test Results. Slip test results shall not be unacceptable as an alternate. Manufacturer shall provide documented results for the purchased machines. Typical or average data shall not be acceptable. 8. ISO-8573-1 Class Zero Oil Free Certificate 9. Declaration of Conformity, per Machinery Directive 2006/42/EC, Annex II, No.1 A. B. Complete blower package operating and maintenance instructions professionally published, hard copy and electronic copy, shall be furnished for all equipment included under these specifications. 1.4. QUALITY ASSURANCE A. Qualifications 1. Package shall be Aerzen Delta Hybrid Model D76S. Regardless of manufacturer, the package shall be produced by the manufacturer of the blower stage, to ensure single source responsibility for blower performance and compatibility of associated accessories. Packagers shall not be permitted to bid. 2. The equipment shall be designed, constructed and installed in 9 accordance with the best practices and methods and shall operate satisfactorily when installed as shown on the Drawings. 3. The rotary lobe compressors shall be covered by a warranty for 24 months from date of commissioning, or 30 months from date of shipment, whichever occurs first. 1.5. BLOWER PERFORMANCE CRITERIA 1. Quantity of Machines 1 2. Design Inlet Temperature 100 °F 3. Site elevation 2,500 ft 4. Design Inlet Pressure 13.41 psia July 2021 Project#19.00305 431133- Page 2 5. Design Relative Humidity (%) 80 % 6. Design Flow 2,079/2,541 scfm/icfm 7. Minimum Turndown 749/915 scfm/icfm 8. Design Discharge Pressure 12.50 psig 9. Brake Horsepower (Max) 139.6 bHp 10. Motor Size (Max) 200 Hp 11. Free Field Noise Guarantee (at design point) 75 dB(A) at 1 meter (1) Package BHP to include pressure loss through a clean inlet filter/ silencer, pressure loss of the exhaust silencer and check valve. (2) Package Performance shall be guaranteed to ISO 1217 with a tolerance is +/- 5% on volume flow and +/- 5% on package horsepower. Manufacturer of blower shall provide data for purchased machine. (3) Sound data shall be from an ISO 2151 method of measurement, in an ISO 3745 qualified test facility. Sound data shall be compliant with a Declaration of Conformity assessment standard. 1.6. DELIVERY, STORAGE AND HANDLING A. All equipment shall be completely factory assembled, skid mounted, crated and delivered to protect against damage during shipment. B. All exposed flanges shall be covered and sealed with shrink-wrap to prevent the entrance of moisture or debris. Finished iron or steel surfaces not painted shall be properly protected to prevent rust and corrosion. C. All equipment delivered to the site shall be stored as specified in accordance with the manufacturer's instructions. 1.7. MAINTENANCE A. Spare Parts 1 . Furnish the following spare parts for each blower package specified: a. Complete set of matched V-belts b. One inlet air filter element c. One oil filter element d. One volume of oil for first service interval July 2021 Project#19.00305 431133- Page 3 2. Spare parts shall be properly bound and labeled for easy identification without opening the packaging. PART 2 - PRODUCTS 2.1. GENERAL A. Rotary Lobe Compressor Packages shall be designed to minimize the life-cycle costs and maximize plant reliability. The design and the selection of the components shall be based on a minimum useful life of 20 years and a Mean Time Between Overhauls of 5 years of continuous operation. Bearing life shall be submitted by manufacturer of the blower stage, based on specified conditions. B. No special foundations shall be required. The packages will be installed directly on a concrete slab without grouting the base frame. There shall only be 4 easily accessible anchor points. C. Manufacturer shall guarantee that the rotary lobe compressor shall provide oil- free operation and be certified to ISO 8573-1 Class Zero. D. Blower Casing: 1. The casing shall be of one-piece construction, with separate sideplates that are bolted and pinned to the housing. 2. Casing materials shall be close-grained cast iron ASTM A48 suitably ribbed to prevent distortion under the specified operating conditions. 3. Inlet and outlet shall be flanged connections, not threaded. 4. Airflow shall be vertical top to bottom with inlet and outlet connections offset so that the flow travel horizontally across the blower stage. Casings that do not utilize a horizontal internal flow shall not be allowed. 5. The vibration level as measured at the casing, in the X/Y planes of the bearings, shall not exceed 0.3 "/ sec RMS when operating at the specified operating pressure and speed. The vibration level shall be checked at start-up and documented in the field start up report. E. Factory Testing: 1. Each rotary lobe compressor stage shall be factory performance tested in accordance with ISO 1217 standards to verify flow and brake horsepower. A slip test shall not be acceptable, nor is average data for the manufactured size. July 2021 Project#19.00305 431133-Page 4 2. The acceptance criteria are +5% tolerance on power and —5% tolerance on flow regardless of the size of the machine. 3. The manufacturer shall submit free field noise data for the complete blower package. The results have been obtained using an ISO 2151 method of measurement, in an ISO 3745 qualified test facility. The performance data shall include a Declaration of Conformity, per Machinery Directive 2006/42/EC, Annex II, No.1 A. F. Rotors: 1 . Each rotor (male and female) shall be of the "stiff' design with first lateral critical speed at least 120% of the maximum allowable operating speed. 2. The rotors shall operate without rubbing nor shall they require lubrication. 3. Rotors shall be drop forged in one single piece of AISI 1043 or equivalent, machined to final tolerance. Minimum material tensile strength shall be 620Mpa. Lesser precision cast iron rotors with surface coatings shall NOT be accepted. 4. Open rotors shall not be acceptable. 5. For maximum strength and reliability, the female rotor shall be driven by the drive motor and the male rotor shall be driven by the timing gear set. Stages that utilize a male driven rotor shall not be accepted. 6. A male and female rotor configuration with internal compression ratio and axial flow entry must be used to increase the adiabatic efficiency of the blower stage. Twisted rotor profiles applied for pulsation cancelation only shall not be allowed. Radial flow entry type rotors shall not be allowed. 7. Only precision-machined rotors with sealing strips to optimize clearance and performance shall be accepted. Manufacturers using coated rotors are required to include the following additional services in their proposal, with a broken out adder to their proposed cost: a. For the first 5 years of service, the manufacturer (not the packager) will visit the site. Each machine will be shut down and visually inspected for evidence of degradation. Inspection will include clearance measurement with feeler gauges. An annual report will be submitted, including photographs, for each machine. b. An annual performance test will be performed on site, including flow and power measurement, for each machine. The results will be compared to the original ISO-1217 test results for each machine, and a report submitted to the owner and the engineer. c. Any sign of performance loss or coating degradation will be monitored. If the engineer or owner determine that the results pose a threat to the reliability of the aeration system over the first five years, the July 2021 Project#19.00305 431133- Page 5 manufacturer will, at their own expense (including parts and labor) replace the designated compressor stage, or overhaul and recoat the existing stage, depending on the number of units affected by the degradation. 8. Rotors shall be statically and dynamically balanced per ISO1940/ANSI S2.19 G2.5. G. Bearings: 1. Each rotor/shaft shall be supported by anti-friction bearings, and fixed to control the axial location of the rotor/shaft in the unit. 2. Regardless of theoretical bearing life calculations, the bearings shall be sized for a minimum expected life of 5 years between overhauls. H. Timing Gears: 1. The rotors shall be timed by a pair of single helical gears with quality equivalent to AGMA 12. Spur cut gears shall not be acceptable. 2. Gears shall have hardened and ground teeth and a minimum AGMA service factor of 1.70. 3. Gears shall be mounted via hydraulic expansion onto the shafts with a tapered interference fit, and secured by a locknut. Pinned gears shall not be acceptable. I. Seals: 1. Seals shall be designed to prevent lubricant from leaking into the air stream as well as to prevent oil from leaking out of the machine. 2. The seal shall be a cartridge type consist of two rotary slip rings mounted in a retainer on the air end, an atmospheric air gap in the center with top and bottom ventilation and a noncontact labyrinth seal with no wearing parts on the oil end. Internal lip seals shall not be permitted. 3. The rotor input shaft shall have a noncontact labyrinth seal with no wearing parts. J. Lubrication: 1. The timing gears and the bearings shall be oil lubricated. Grease lubrication shall be not acceptable. K. Oil Sight Glass: 1. An oil sight glass shall be provided on the exterior of the noise enclosure so the operator can easily view the oil level. July 2021 Project#19.00305 431133-Page 6 2. Sight glasses inside the enclosure or that cannot be easily viewed by the operator shall not be acceptable. L. Painting: 1 . Painting shall be per supplier's standard meeting the following criteria: a. Except for machined sealing and machined mounting surfaces, the package shall be painted dark blue. b. Aluminum, stainless steel, and brass shall not be painted. c. The supplied motor shall not be over sprayed and will be supplied with the motor manufacturer's standard protection and paint color. d. Painted Cast Iron and Carbon Steel shall be Alkyd Resin Primer and Final coat with a total dry film thickness of 70Dm. Surface preparation SSPC10 or better. e. Sound enclosure shall be powder-coated polyester base total dry film thickness 80 m. f. Galvanized components shall only be painted with appropriate surface preparation 2.2. BLOWER ACCESSORIES A. Inlet Filter/ Silencer: 1. Each package shall be supplied with one combination inlet filter and silencer. 2. The inlet filter silencer shall be mounted directly to the inlet flange of the blower. 3. The filter media efficiency shall meet the requirements of ASHRAE 52.2 MERV7 50-70% @3-10 microns corresponding to EN779 G4. 4. The silencer portion shall be located upstream of the inlet filter. 5. The filter element shall be designed to trap dirt on the inside so that upon changing, dirt does not fall into the machinery. Filters where dirt accumulates on the external surface of the filter shall not be permitted. 6. Filter and silencer performance losses (clean element) shall be included in the entire package performance calculation. B. Base Frame / Discharge Silencer: 1 . Each package shall be supplied with one combination base frame / discharge silencer. 2. The silencer shall be a chamber type design for maximum sound July 2021 Project#19.00305 431133-Page 7 attenuation and shall not use internally any absorption materials of any kind (fibrous or otherwise). Internal absorption material has been shown to degrade, reduce the attenuation quality of the silencer, and internally foul diffusers. Silencers that utilize internal absorption material shall not be permitted. 3. The silencer shall be fabricated of a single shell of pressure vessel 9 quality steel with continuous welds. 4. The silencer must be subject to a pressure test for tightness and strength at a minimum of 1.65 times the maximum design pressure. 5. The silencer shall have a machined flanged inlet connection and bolt directly to the discharge flange of the rotary lobe compressor, with no intermediary or interconnecting pieces. Threaded connection between the compressor stage and the discharge silencer is subject to leakage and misalignment, and shall not be permitted. 6. Discharge silencer performance losses shall be included in the entire package pressure calculation. Blower accessories shall be supplied by the manufacturer of the blower stage. 7. The base frame shall be constructed from welded carbon steel that shall be designed to maintain alignment of the blower internal components and the drive during operation. 8. The base frame shall be designed to resist distortion while being installed on vibration isolating mounts. 9. The manufacturer shall supply a stainless steel grounding lug fully welded to the base. C. Flexible Connectors: 1. Each package shall be provided with a flexible ANSI style discharge connector and upstream of the inlet silencer.. 2. Flexible connectors shall prevent the transmission of noise and vibrations from the blower package into the piping. 3. Flexible discharge connectors shall be Proco Style 240, Type EE, EPDM, with a standard ANSI flange discharge connection, rated for 300 °F at 20 psig. Soft face range with galvanized split ring reinforcement. D. Electric Motor: 1. Each package shall be supplied with a WEG manufactured TEFC NEMA Premium Efficiency motor that shall operate on 460 Volts, 3 Phase, 60 Hertz current, 3600 RPM. Operation of motors above 60 Hertz shall not be allowed under any circumstance. July 2021 Project#19.00305 431133-Page 8 2. Motors shall be horizontal, foot mounted, rigid base, Torque NEMA B, Temperature rise Class B, TEFC IP55, water tight and dust tight enclosure. 3. Class F, inverter rated insulation, Class H applied varnish, 3:1 constant torque VFD-duty. 4. Regreasable bearings, positive pressure lubrication system with automatic drawn plugs — pressure compensated (frame sizes 254T and larger). 5. All frame sizes shall be domestic NEMA standard frame sizes, suitable for overhung belt drive and with the conduit box on top of the motor. IEC frame motors shall not be allowed. 6. The motor will be mounted on a pivoting base to provide automatic tensioning of the belts. The motor nominal rating after any corrections for ambient conditions shall be 10°A) above the maximum operating horsepower. 7. The motor shall have a 1.25 service factor for sizes up to 100 HP and a 1.15 service factor for sizes above 100 HP. 8. Motor windings shall be supplied with a normally closed thermostat, one per phase, wired in series to form a fail-safe motor protection circuit for the external fault circuit of the motor controller on all frame sizes at or above 324T. Thermostat shall be a Klixon Precision Thermostat by Sensata Technologies. 9. Motors shall be equipped with an Aegis ring and insulated NDE bearing to mitigate the effects of stray motor currents. 10. Blower manufacturer shall be responsible for coordinating the starting torque requirement of the blower and the motor. 11. The use of the TEFC motor to cool the blower system or circulate the enclosure air shall not be allowed. 12. Regardless of VFD supply, the manufacturer shall publish the VFD program settings in the submittal documentation to verify operation is within the intended RPM range of the motor. 13. Under no circumstances shall operation above 60Hz be permitted to achieve the required flow rate. Motor operation shall be limited to a maximum of 60Hz by the motor controller. E. V-Belt Drive: 1. Each package shall be supplied with a V-belt drive that shall be of the high capacity type, oil and heat resistant. July 2021 Project#19.00305 431133-Page 9 2. Drive shall be designed for a minimum service factor of 1.4 times operating power (bHp), or 1.1 times the motor nameplate Hp, whichever is larger to allow a minimum of 1.4-service factor based on the maximum blower bHp. 3. Belt tensioning shall be automatic without the use of any spring devices or interaction on the part of the operator. Slide rails or spring tensioners shall not be used as a tensioning device. 4. Sheaves shall be dynamically balanced regardless of the operating speed and hydraulically mounted on the compressor drive shaft. 5. The automatic tensioning system shall yield a v-belt life of 16,000 hrs of operation. F. Belt Guard: 1. The belt drive shall be guarded in compliance with OSHA regulations. 2. Portions of the guard shall be easily removable allowing for belt inspection and replacement. 3. Guard material shall be perforated galvanized carbon steel. G. Vibration Isolators: 1. Each package shall be supplied with vibration isolating feet with a minimum efficiency of 80%. 2. The manufacturer shall be responsible for attenuating noise and vibration in the package such that no special installation base shall be required, nor shall any additional measures be required to reduce vibrations from the package being transmitted to the base or the piping. H. Pressure Safety Valve: 1. Each package shall be supplied with a single pressure safety valve on the discharge side of the blower mounted downstream of the discharge silencer and upstream of the check valve. 2. The safety valve shall be set to protect the machine from exceeding its maximum pressure rating, and shall be sized to pass 100% of the design flow. 3. The valve shall be field adjustable, spring loaded, and have a certificate of conformity to PED if operating above 15 psig. 4. The pressure safety valve shall be housed inside and attenuated by the sound enclosure. The safety valve shall relieve hot air into a segmented and sealed section of the sound enclosure so that the hot air cannot July 2021 Project#19.00305 431133-Page 10 reenter the inlet of the machine. Weighted relief valves inside the enclosure shall not be permitted. Diaphragm electronically actuated relief valves shall not be permitted. 5. The valve shall be manufactured by Aerzen. Check Valve: 1 . Each package shall be supplied with one check valve that shall be installed on the discharge line. 2. The check valve shall be of the full-bore low pressure-drop, flapper type design with a steel body, and steel flap embedded in EPDM with full- contact seal. Applications with a continuous discharge temperature of 275°F will require the steel flap embedded in Silicone with a full-contract seal 3. The valve shall be easily removable without disturbing the piping. Check valves requiring installation in the discharge piping shall not be considered, unless installation cost of the external valve is included in supplier's proposal. 4. Pressure losses produced by the check valve shall be included in the entire package performance calculation. 5. The check valve shall be manufactured by Aerzen. J. Local Control Panel: 1 . Each package shall be supplied with the following control functions and features: a. Intuitive TFT color touch screen display b. Display, monitoring, alarm, and shutdown of inlet pressure, discharge pressure, discharge temperature, enclosure cooling fan thermal overload, main drive motor thermal overload, oil temperature and oil pressure. c. Display run hours d. Log errors and first out indication e. Track and log maintenance f. E-Stop button mounted on front of blower enclosure g. Operation of enclosure cooling fan motor starter and oil demister h. Ability to transfer measured values, fault and status messages, as well as remaining times of the service intervals to the customer control system via Ethernet IP. i. Permissive control function of customer start and stop signals to a motor controller July 2021 Project#19.00305 431133-Page 11 - J j. The local control panel shall be provided with the following digital outputs: i. Common alarm ii. Common fault iii. Ready to run iv. Transfer of external start/stop command v. Status remote vi. Alternatively, these outputs can be obtained using the communication protocol k. The local control panel shall be provided with the following digital inputs: i. Remote start/stop ii. Motor controller fault iii. Customer E-stop iv. Alternatively, these inputs can be supplied using the communication protocol 2. Control Enclosure a. IP54 suitable for indoor/outdoor installation b. NEMA 12 c. Factory installed, integral to sound enclosure 3. Control Supply Power a. 460 VAC, 10 Amp feed with 24 VDC transformer 4. Monitoring Sensors a. Inlet Pressure Transducer b. Discharge Pressure Transducer c. PT 1,000 Discharge Temperature RTD d. PT 1 ,000 Oil Temperature RTD e. Oil Pressure Transducer 5. Local control panel shall be the Aerzen AERtronic Digital Controller K. Each blower shall receive its initial oil filling at the factory. Oil to be fully synthetic and rated for 16,000 hours of operation between change intervals. L. Acoustical Sound Enclosure: 1 . Each package shall be supplied with a sound enclosure covering the July 2021 Project#19.00305 431133- Page 12 entire blower package. 2. The enclosure shall provide suitable protection for outdoor installation under wind loads of 50mph and snow loads of 251bs/ft2. 3. The enclosure shall be designed so as to be able to install them side-by- side with all maintenance done from the front or back of the package. 4. Details shall be as follows: a. Enclosure Panels shall be made of galvanized steel sheet, powder coated in a light reflecting, blue color per RAL 5001 . The skid shall be of the same color. b. The enclosure and the blower package shall both be mounted on a skid/ oil-drip pan designed for meeting environment protection standards and for easy transportation and installation. c. A grounding strap shall be installed between the blower base and the package skid to bypass any vibration isolating mounts for grounding continuity. d. Quick release panels, each less than 50 lb (as mandated by MSHA) must provide easy and quick access for routine maintenance of the blower and the package components. e. Enclosure Cooling / Ventilation Fan: i. Ventilation fan shall be provided for cooling the sound enclosure. ii. The fan shall be sized for sufficient heat removal from the sound enclosure, even when the blower is operated with a VFD. iii. The cooling fan shall be driven separately by a 460V, 3Ph, 60Hz electric motor powered by the same 460 VAC electric feed as the local control panel. A 120V single phase motor for this application will not be acceptable as the current draw and motor operating temperature are too high. iv. The enclosure cooling fan shall be a dedicated device. The use of the TEFC drive motor to cool the blower or circulate the sound enclosure shall not be allowed. f. To prevent possible operator damage, electrical components, instrumentation and instrument connections shall not be mounted or interface with moving panels of the sound enclosure. g. Both blower oil sumps shall be piped to a common fill and drain, located at the front of the package for easy maintenance. An oil level indicator shall be mounted on the outside of the enclosure, which gives an accurate oil level indication while the blower is in operation. All oil lines shall be industrial-quality hydraulic hose and fittings. July 2021 Project#19.00305 431133- Page 13 PART 3 - EXECUTION 3.1. INSTALLATION A. The Contractor shall install the rotary lobe compressors in accordance with the manufacturer's written instructions. B. The Contractor shall make all electrical and process connections to the blower package prior to the arrival of the manufacturer's representative. C. Manufacturer's authorized service technician shall verify proper installation, electrical connections and equipment alignment prior to start up. 3.2. FIELD SERVICE & TESTING A. After installation of all equipment has been completed and as soon as conditions permit, the manufacturer shall provide one (1) trip for a total of one (1) - 8-hour days to verify the installation and conduct an acceptance test under actual operating conditions. 1. The Manufacturer shall perform a physical check of the blower installation, perform safety checks, power up the equipment and perform functional testing. 2. The functional test shall consist of 4 hours of operation of each blower with vibration, temperature, and pressure readings as well as motor amp readings taken and recorded at 60-minute intervals. 3. The Manufacturer shall provide operations and maintenance training to the plant personnel. The training shall consist of 1 hour of classroom training using the Operation and Maintenance Manual for reference and 2 hours of hands-on training at the blower package. B. If required, Contractor shall make any changes, at his own expense, to the installation that may be necessary to assure satisfactory operation. Contractor shall be held liable for changes needed in the installation. C. Manufacturer shall provide a written field test / start up report after completion of testing. END OF SECTION 431133 July 2021 Project#19.00305 431133-Page 14 SECTION 465131 FLEXIBLE MEMBRANE TUBE DIFFUSERS PART 1 - GENERAL 1.1 SCOPE OF WORK A. This section includes the design, manufacture, installation and start-up of a flexible membrane, fine pore aeration system including in-basin aeration components as shown on the Drawings and as specified herein. B. The aeration system manufacturer shall provide single source responsibility for the complete aeration system including blowers, yard piping, in-basin piping, diffuser assemblies, support components, and installation. 1.2 DEFINITIONS A. Tank: Vertical walled reactor within which aeration occurs. B. Diffuser Unit: Fabricated unit including diffuser support frame and flexible membrane which releases air to the water. C. Diffuser Assembly: Fabricated assembly including two diffuser units and assembly mounting components. D. Air Drop Pipe: Vertical piping section from out-of-basin header stub to in-basin aeration system. E. Air Subheader Piping: Air distribution piping from drop pipe to air distribution laterals. F. Air Lateral Distribution Piping: Air distribution piping from air subheader and diffuser assemblies. G. Air Header Piping: Out-of-basin air distribution piping from the blower building to the header stubs. H. Blower Manifold Piping: Air distribution piping between the blower discharge and air header piping. I. Aeration Grid: Associated piping and diffuser components connected to a single drop pipe. J. Standard Cubic Feet per Minute (scfm): Air at 68°F, 14.7 psia and 36% relative humidity. K. Maximum Pressure: Pressure in blower manifold piping at the specified airflow rate. July 2021 Project#19.00305 465131-Page 1 L. Oxygen Transfer Efficiency: Percent of oxygen in the air stream that is dissolved to the wastewater under specified conditions of temperature, barometric pressure, airflow rate, and dissolved oxygen concentration. M. Standard Oxygen Transfer Efficiency: Percent of oxygen in the air stream that is dissolved to clean water under conditions of 68°F, 14.7 psia, and zero dissolved oxygen. N. Air Distribution Uniformity: Variation in air distribution between diffuser assemblies. 1.3 SYSTEM DESCRIPTION A. Design Requirements: 1. Design in-basin air piping and diffusers to diffuse air throughout the aeration tank(s) in accordance with the specifications. 2. Design each diffuser assembly to provide uniform air release over the specified airflow range. 3. Design the aeration system to provide the minimum specified oxygen transfer efficiency at the specified airflow and operating pressure. 1.4 SUBMITTALS A. General: 1. A detailed engineering submittal package shall be provided in sufficient detail and scope to confirm compliance with the requirements of this section. Submittals shall be complete for all required components. Partial submittals will not be accepted. B. Shop Drawings: 1. Detailed layout drawings for aeration components. Layout drawings shall include: a. Layout and configuration of blower. b. Layout and configuration of aeration system. c. Detail drawings of diffuser assemblies showing components, method of construction, and attachment mechanism to air header distribution piping. d. Detail drawings of all piping connections including drop to manifold, manifold to header and inline connections for manifold and headers. e. Detail drawings of pipe support components. July 2021 Project#19.00305 465131-Page 2 C. Product Data: 1. Detailed listing of materials and materials of construction. 2. Product literature. D. System Design and Performance Data: 1. Design calculations showing oxygen transfer based on guaranteed performance. 2. Include complete air headloss calculations for the aeration equipment from the top of the dropleg to the farthest diffuser bubble release point. 3. Design calculations showing uniform air distribution (+10% maximum variation) through lateral piping and diffuser element orifice system. 4. Design calculations for piping and support components. 5. Product Experience: a. The supplier shall have experience in the design, manufacture, supply and commissioning of fine pore, flexible membrane aeration equipment identical to the type specified for this project. b. The equipment submitted shall be of proven design and shall be referenced by at least three installations of similar size, having been in successful operation for a period of not less than five (5) years prior to bid date. c. If the Contractor elects to submit a substitute aeration system that does not comply with the above experience requirements, a bond guaranteeing the replacement of the aeration system shall be provided with the submittal package. 1) The bond term shall be for a period of five (5) years. This term shall include the specified warranty period plus three (3) additional years. 2) If the operation of the aeration system as determined by the Owner is unsatisfactory, the Contractor shall repair, modify or replace the entire aeration system in a manner acceptable to the Owner. 3) Normal wear or malfunctions due to neglect or abuse shall not be considered justifiable reasons for unsatisfactory operations. 4) The presence of chemical compounds that are aggressive to the membrane material are not considered as normal wear or service. 5) If the Contractor fails to correct deficiencies identified by the Owner within six (6) months of the date first notified in writing, the Owner shall at it's own discretion make all necessary repairs or replacement and deduct all associated costs from the Contractor's bond. July 2021 Project#19.00305 465131-Page 3 6. Guarantee: a. All equipment furnished under this contract shall be warranted to be free from defects in materials and workmanship for twelve (12) months from startup of the equipment or eighteen (18) months from shipment, whichever occurs first. Defective part(s) shall be remedied by repair or replacement of the defective part(s) only shipped freight included, FOB original shipping point, by the Manufacturer. Labor is included in this warranty. E. Installation Instructions: 1. Installation requirements and guidelines for all proposed equipment shall be provided and approved. 2. Information on the aeration system shall include but not be limited to: a. Diffuser unit assembly. b. Diffuser assembly attachment. c. Piping components and assembly. d. Piping support components. F. Operation and Maintenance Manuals: 1. Operations and maintenance manuals for all proposed equipment shall be provided and approved. 2. Information on the aeration system shall include but not be limited to: a. Air flow balancing. b. Diffuser assembly maintenance and membrane replacement. PART 2 - PRODUCTS 2.1 MANUFACTURERS A. Environmental Dynamics International, Columbia, Missouri. Environmental Dynamics will be sole sourced contractor and manufacturer for supply and installation of blowers, yard piping, header piping, and in-basin aeration equipment. 2.2 MATERIALS A. Welded Stainless Steel Components: 1. Sheets and plates of Type 304L stainless steel conforming to AISI 304L and ASTM A240. July 2021 Project#19.00305 465131-Page 4 2. Limit carbon content to 0.30% maximum. B. Non-welded Stainless Steel Components: 1 . Sheets and plates of Type 304 stainless steel conforming to AISI 304 and ASTM A240. C. Fasteners and Anchorage Components: 1. 18-8 series stainless steel. D. PVC Pipe and Fittings: 1. Base material shall be ASTM D-1784. 2. Pipe shall be manufactured in accordance with ASTM D-1785 and ASTM D-2665. CPVC Pipe and Fittings E. CPVC Pipe and Fittings 1. Base material shall be ASTM D-1784. 2. Pipe shall be manufactured in accordance with ASTM F-439 and ASTM F-441 . 2.3 AERATION EQUIPMENT A. System Performance: 1. The aeration-mixing system shall be designed to meet the following: a. Airflow = 2121 scfm maximum b. Discharge Pressure = 12.5 psig c. Diffuser Unit DWP = 1 inches H2O maximum d. Design Diffuser Submergence = 23 feet maximum B. Flexible Membrane, Fine Pore Diffusers: 1 . The EDI FlexAir Magnum 84P high temperature diffuser assembly shall be furnished and installed. 2. Each diffuser assembly shall be factory assembled and include two diffuser units and mounting saddle. 3. Diffusers unit shall have nominal dimensions of 3.5 inches in diameter and 40 inches long. 4. The diffuser membrane shall be fully supported over full length and July 2021 Project#19.00305 465131-Page 5 circumference with a 3.5 inch CPVC membrane support frame. a. Use of a non-fully supported diffuser membrane is not acceptable. 5. The diffuser support frame shall be approximately 40 inches long and have a full diameter mounting connection. a. Use of non-full diameter mechanical connections including threaded connections is not acceptable. 6. The diffuser membrane shall be held in place by two 304 stainless clamps. a. Retainer clamps shall be crimp type. Worm gear type clamps are not acceptable. 7. Installation of the diffuser membrane shall be accomplished with the removal and installation of the membrane clamps. a. Disassembly of diffuser assembly to remove and install membranes is not acceptable. 8. Individual diffuser units shall be provided with an internal end cap. 9. The diffuser unit shall be fully capable of operating under continuous or intermittent conditions and shall be designed with check valve capabilities to prevent entry of mixed liquor into the diffuser unit or air piping on air shutdown or interruption of air supply. A minimum of three (3) check valve features shall be provided, not limited to the following: a. Membrane shall be elastic and allow openings to close when the air supply is interrupted. b. Membrane shall contract and close around full diameter support frame. c. Membrane shall employ a non-perforated section that is aligned and seals against the support frame, air distribution orifices. d. Use of independent or internal check valve components is not acceptable. 10. Diffuser assemblies shall be completely factory assembled with diffuser units, membranes and mounting saddle factory installed. a. Field solvent welding or assembly of diffuser is not acceptable. 11. Diffuser assemblies shall be shipped to the jobsite assembled and properly crated and protected for shipment and handling. 12. Diffuser saddle mount shall be ABS construction and shall be capable of withstanding an external force of 7,500 inch-pounds without structural failure of the air distribution pipe, diffuser units connection or mounting July 2021 Project#19.00305 465131-Page 6 saddle. a. Small diameter threaded connections to attach diffusers to the air distribution header are not acceptable. b. Saddle mount shall fully encompass the air distribution header and reinforce the pipe section at the diffuser assembly connection. c. Alignment plug shall be provided to ensure proper alignment and resistance to rotation. d. An 0-ring gasket shall be provided to ensure an air tight seal between the mounting saddle and air header. 13. A minimum 3 inch diameter connection shall be provided between the saddle mount and diffuser assembly. C. Flexible Membrane: 1. Membrane material for the diffuser unit shall be EPDM rubber. a. Alternate membrane materials are not acceptable. 2. Membrane shall be extruded in a single piece with the following characteristics. a. Membrane shall be 91 mm inside diameter with an overall length of 1000 mm. b. Perforated length on diffuser membrane shall be 924 mm. c. Membrane shall have a 20 mm non-perforated strip at the top and bottom of the diffuser to reduce bubble coalescence. d. Non-perforated membrane section shall be provided to seal off air distribution orifices on the diffuser support structure. D. Aeration System Piping: 1 . Out-of-basin air piping including blower manifold, air header, and header stubs are required and are to be supplied by the Manufacturer. a. Header stubs shall extend to the inside top of the wall and terminate with a full diameter, horizontal face, flange. b. Out-of-basin piping may be unlined ductile iron, galvanized steel, stainless steel, or painted carbon steel. c. The Manufacturer shall provide an isolating/balancing valve for control and distribution of air to the aeration grid and to allow isolating of the grid for inspection and maintenance on the header stub. d. Isolation/balancing valve shall be positioned for accessibility from the top of the tank. 2. Drop pipe shall be provided with a flanged top connection and plain end bottom. July 2021 Project#19.00305 465131-Page 7 a. Drop pipe shall extend from the top connection to within 2 feet of the air manifold. b. Material of construction for the drop pipe shall be schedule 5, 304 stainless steel. c. Drop pipe shall connect to air manifold piping by means of a wrap-around clamp adapter. 3. All submerged manifolds and header components shall be schedule 40, PVC minimum. a. Use of non-reinforced diffuser connections including threaded diffuser mounts is not acceptable. 4. Pipe supports shall be all stainless steel construction. a. Supports shall accommodate longitudinal movement in the piping components due to the thermal expansion and contraction over a temperature range of 100°F. b. Supports shall restrain the axial and rotational movement of the pipe while providing for unrestrained longitudinal movement. c. Supports shall allow leveling of the air piping with 2 inch minimum vertical adjustment at each support. d. Each pipe support shall be connected to basin floor by at least 2 anchor bolts. e. The integrated pipe support assembly shall be designed to withstand the associated uplift force of the piping and diffuser assemblies with a minimum design factor of safety equal to ten (10). E. Spare Parts: 1. The Contractor shall furnish all recommended spare parts for one (1) year of operation, including but not limited to: a. Four (4) - EDI FlexAir Magnum Model 84P diffuser assemblies completely factory assembled. 2.4 BLOWER SUPPLY A. System Performance 1. See separate specification. 2. Blower shall be manufactured by Aerzen. PART 3 - EXECUTION July 2021 Project#19.00305 465131-Page 8 3.1 INSTALLATION A. Manufacturer shall furnish, inspect, store, and install aeration system, blower, and yard piping in accordance with written instructions and approved submittals. B. Diffuser assemblies on a common grid shall be installed within an elevation tolerance of ±1/2 inches. C. Contractor shall provide all valves, air header piping, wall sleeves with seals, wall pipes, and concrete pedestals as necessary to complete the system as shown on the plans. D. Air piping including blower manifold, header, and in-basin piping must be clean prior to delivering air up the diffusers. E. Manufacturer shall be responsible for cleanliness of piping and may be required to manually clean pipe, or air or water flush piping as required. 3.2 START-UP A. After installation is completed, the Manufacturer shall perform the following field tests in the presence of the Engineer and the Owner. 1. Fill the reactor to the bottom of the diffuser assemblies. 2. Adjust the pipe supports and diffuser assemblies such that all diffuser units are installed within ±1/2 inches of the design diffuser elevation. 3. Fill the reactor to a level of 2 feet above the top of the diffusers. 4. Release air to the system and inspect the system for air leaks at all piping or diffuser connections. 5. Check all membrane for cuts or tears that may have occurred during the installation. 6. Adjust any piping or diffusers that show leaks or disproportionate amount of airflow. 7. Operate the blowers at the design air rate and observe air release and air distribution patterns. 8. All water, air, power and labor associated with testing and adjustment of diffuser assemblies are to be supplied by Contractor. B. MANUFACTURER'S FIELD SERVICES July 2021 Project#19.00305 465131-Page 9 1. A manufacturer's representative shall be present at the job site to inspect the installation of the equipment, start-up the system, and train operations and maintenance personnel on the supplied equipment. 2. Services including a total of two (2) trip with a total of two (2) day onsite shall be provided. The EDI equipment included in this specification is covered by US Patent Nos. 5,059,358, 4,960,546, 5,013,493, 5,133,876 and additional pending patent applications. END OF SECTION 465131 July 2021 Project#19.00305 465131-Page 10