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WQ0020249_Regional Office Historical File Pre 2018
Michael F. Easley, Governor William G. Ross Jr., Secretary North Carolina Department of Environment and Natural Resources Gregory J. Thorpe, Ph.D. Acting Director Division of Water Quality -NiC DEPT. OF ENVIRCNTAE?'4' August 28, 2001 Honorable Darrell AImond, Mayor Town of Norwood P. O. Box 697 Norwood, North Carolina 27128-0697 AtfU 1NJ:1k kiCO FIESVi;.t. . F1C. AUG 2 9 2001 gA rER ULTY SECTION SUBJECT: Town of Norwood Outfall Line Replacements Approval of the Plans and Specifications Project No. E-SRG-T-01-0114 uva2 O 49 Dear Mayor Almond: The review for completeness and adequacy of the project construction plans and specifications has been concluded by the Construction Grants & Loans Section of the North Carolina Division of Water Quality. Therefore, said plan documents are hereby approved with eligibility for State grant funding determined as follows: Eligible The replacement of approximately 9,5701.f. of 18-inch gravity sewer, and 1,0601.E of 18-inch plant discharge outfall, and all associated appurtenances to serve the Town of Norwood. Issuance of this approval letter does not imply availability of funding. You are encouraged not to advertise for bids until you have received the funding offer. In the event that received bids exceed the amount established through the funding offer, and local funds are not adequate to award contract(s), it will be necessary to consider all alternatives including redesign, re -advertising, and rebidding. Neither the State or Federal Government, nor any of its departments, agencies or employees is or will be a party to the invitation to bids, addenda, any resulting contracts or contract negotiations/changes. In accordance with the Federal Regulations, the Recipient is required to assure compliance with the OSHA safety regulations on the subject project. In complying with this regulatory responsibility, the Recipient should, by letter, invite the Training Officer, Standards Analysis and Publications Unit, NC OSHA Division, 4 W. Edenton Street, Raleigh, North AA .NCDENR. Construction Grants & Loans Section 1633 Mail Service Center Raleigh, NC 27699-1633 (919) 733-6900 Customer Service Fax (919) 715-6229 Internet Address: www. nccgl.net 1 800 623-7748 Michael F. Easley, Govemor William G. Ross Jr., Secretary North Carolina Department of Environment and Natural Resources August 28, 2001 Honorable Darrell Almond, Mayor Town of Norwood P. O. Box 697 Norwood, North Carolina 27128-0697 Gregory J. Thorpe,,Ph.b. Acting Director WC DEPT. .v EWVfRON EWT AND NATURAL RESOURCES "Jr72SvI ,Lt a.' ;;'s; h f OFFICE AEG 2 9 2611 SUBJECT: Town of Norwood Outfall Line Replacements Approval of the Plans and Specifications Project No. E-SRG-T-01-0114 Dear Mayor Almond: The review for completeness and adequacy of the project construction plans and specifications has been concluded by the Construction Grants & Loans Section of the North Carolina Division of Water Quality. Therefore, said plan documents are hereby approved with eligibility for State grant funding determined as follows: Eligible The replacement of approximately 9,570 1.f. of 18-inch gravity sewer, and 1,060 I.f. of 18-inch plant discharge outfall, and all associated appurtenances to serve the Town of Norwood. Issuance of this approval letter does not imply availability of funding. You are encouraged not to advertise for bids until you have received the funding offer. In the event that received bids exceed the amount established through the funding offer, and local funds are not adequate to award contract(s), it will be necessary to consider all alternatives including redesign, re -advertising, and rebidding. Neither the State or Federal Government, nor any of its departments, agencies or employees is or will be a party to the invitation to bids, addenda, any resulting contracts or contract negotiations/changes. In accordance with the Federal Regulations; the Recipient is required to assure compliance with the OSHA safety regulations on the subject project. In complying with this regulatory responsibility, the Recipient should, by letter, invite the Training Officer, Standards Analysis and Publications Unit, NC OSHA Division, 4 W. Edenton Street, Raleigh, North NCDENR Construction Grants & Loans Section 1633 Mail Service Center Raleigh, NC 27699-1633 (919) 733-6900 Customer Service Fax (919) 715-6229 Internet Address: www. nccgl.net 1 800 623-7748 A 7F9 Michael F. Easley, Governor William G. Ross Jr., Secretary QG North Carolina Department of Environment and Natural Resources rGregory J. Thorpe. Ph.D. —I Acting Director 0 Y Division of water Quality Honorable Darrell Almond, Mayor Town of Norwood P. O. Box 697 Norwood, North Carolina 27128-0697 Dear Mayor Almond: August 28, 2001 NC DEPT. OF ENVIRONMENT AND Tilr;AL Kt_sOURCES MOORESVILLE REGIONAL OFFICE n I_r AUG 3 0 2001 VIA rn lc 1Y SUBJECT: Town of Norwood Outfall Line Replacements Approval of the Plans and Specifications Project No. E-SRG-T-01-0114 The review for completeness and adequacy of the project construction plans and specifications has been concluded by the Construction Grants & Loans Section of the North Carolina Division of Water Quality. Therefore, said plan documents are hereby approved with eligibility for State grant funding determined as follows: Eligible The replacement of approximately 9,570 I.f. of 18-inch gravity sewer, and 1,0601.f. of 18-inch plant discharge outfall, and all associated appurtenances to serve the Town of Norwood. Issuance of this approval letter does not imply availability of funding. You are encouraged not to advertise for bids until you have received the funding offer. In the event that received bids exceed the amount established through the funding offer, and local funds are not adequate to award contract(s), it will be necessary to consider all alternatives including redesign, re -advertising, and rebidding. Neither the State or Federal Government, nor any of its departments, agencies or employees is or will be a party to the invitation to bids, addenda, any resulting contracts or contract negotiations/changes. In accordance with the Federal Regulations, the Recipient is required to assure compliance with the OSHA safety regulations on the subject project. In complying with this regulatory responsibility, the Recipient should, by letter, invite the Training Officer, Standards Analysis and Publications Unit, NC OSHA Division, 4 W. Edenton Street, Raleigh, North ATATA NCDEM: Construction Grants & Loans Section 1633 Mail Service Center Raleigh, NC 27699-1633 (919) 733-6900 Customer Service Fax (919) 715-6229 Internet Address: www. nccgl.net 1 800 623-7748 Michael F. Easley Governor William G. Ross, Jr.,Secretary North Carolina Department of Environment and Natural Resources Y Gregory J Thorpe, PhD,,Acting Director Division of Water Quality August 20, 2001 Sam R. Noble, Jr., P.E. Koonce, Noble, & Associates, Inc. 208 E. Fifth Street P.O. Box 1027 Lumberton, N.C. 28359 Subject: Town of Norwood Sewer Line Outfall Replacement/Abandonment Stanly County, NC Dear Mr. Noble: This office has received your request for an acceptable method to abandoning the 12-inch sanitary sewer outfall serving the Town of Norwood. Special Provision 32 of your specifications requires the contractor to fill the line with grout after the new sewer line is placed into service. The sewer line should also be flushed prior to filling with grout and the ends need to be sealed to prevent any odors from the line. Water from the flushing operation should be discharged to the Town ofNorwood's WWTP. Special provision 36 of your specifications is acceptable for manhole abandonment. Should you have any questions concerning this matter, please do not hesitate to contact Mr. Don Price or me at (704) 663-1699. Sincerely, D. Rex Gleason, P.E. Water Quality Regional Supervisor cc: Construction Grants & Loans Ronnie Yarbough, Norwood Public Works Director DP web am Customer Service 1 800 623-7748 Mooresville Regional Office, 919 North Main Street, Mooresville, NC 28115 PHONE (704) 663-1699 FAX (704) 663-6040 Koonce, Noble & A,ssociaes, Inc. Consulting Engineers August 8, 2001 WAT Mr. Don Price Division of Water Quality' North Carolina. Department ofI° nviron► ent and Natural Resources Mooresville Regional Office 919 North Main Street Mooresville, NC 28115 RE: TOWN OF NORWOOD OUTFALL LINE REPLACEMENT PROJECT NO. E-SR.G-7-01-0114 Bear Mr. Price: AUG 1 2 01 C)ur office has prepared plans and specifications to replace the existing outfall to the Town of Norwood's Wastewater Treatment Plant. Construction Grants and Loans has requested that we have the regional office confirm the acceptable method of abandoning the existing 12" Sanitary Sewer. W have enclosed a copy of the Special Provisions. Special Provisions 32 and 36 provide for the abandonment of the existing mains and manholes. Special Provisions 33 and 34 provide the sequence of construction. Please advise if this naeth.od of abandonment is acceptable. Sincerely, KOONCE, NOIIL.E & ASSOCIATES, INC. R. Noble, Jr., SRNjr/asb enclosure 20 EAST FIFTH STREET . TELEPHONE (910) 738.9376 P. O. BOX 1027 . LUMBERTON, NC 28359 1 AX (910) 738-9378 . E MAIL: KNA @ Carolina.net SPECIAL PROVISIONS 01. GENERAL: In the event of a conflict between the General Conditions and these Special Provisions, the Special Provisions will govern. 02. COMPLETION TIME: Work shall be commenced with adequate forces on the date stipulated in the Notice to Proceed, and the Project shall be fully completed within 210 consecutive calendar days. 03. LIQUIDATED DAMAGES: If the project remains incomplete after the established time of completion, the liquidated damages sustained by the Owner shall be $200.00 per day. The Contractor shall also be liable for additional construction observation costs incurred by the Engineer for the time by which contract time is exceeded. 04. SILTATION AND SOIL EROSION: The Contractor shall minimize siltation and soil erosion as specified under the Erosion and Sedimentation Control Section of the Detailed Specifications and as shown on the contract drawings. 05. DISTURBED AREAS: The Contractor shall restore all disturbed areas to original, or better, condition. 06. SAFETY AND HEALTH REGULATIONS: The Contractor shall comply with the Department of Labor Safety and Health Regulations for construction promulgated under the Occupational Safety and Health Act of 1970 (PL-596) and under Section 107 of the Contract Work Hours and Safety Standards Act (PI. 91-54). 07. TEMPORARY TOILETS: The Contractor shall provide temporary toilet facilities for use of all workmen. Temporary toilet facilities shall comply with local and state sanitation laws and regulations. 08. CHEMICALS: All chemicals used during project construction or furnished for project operation, whether herbicide, pesticide, disinfectant, polymer, reactant, or other classification, must show approval of either EPA or USDA. Use of all such chemicals and disposal of residues shall be in strict accordance with applicable instructions. 09. LAWS AND ORDINANCES: The Contractor shall abide by all local and state laws or ordinances to the extent that such requirements do not conflict with federal laws or regulations. 10. RIGHTS OF INSPECTION: The Contractor, for any Section of this project, shall make the project available to the representatives of the Owner, the Division of Water Quality, Division of Environmental Health, North Carolina Department of Environment and Natural Resources, SP-1 rand the Engineers for ready access to any portion of the project at any stage of its construction for the purpose of making such inspection as they deem necessary. This shall be construed to include access to inspection of materials and equipment in the manufacturing or construction stage, all materials, payrolls, personnel records, invoices and other relevant data and records if so requested by representatives of the above enumerated persons and/or organizations. 11. UNSATISFACTORY EQUIPMENT INSTALLATION: Any equipment manufacturer with an unsatisfactory, uncorrected equipment installation that is attributable to the manufacturer will not be allowed to supply materials for the job. 12. SHOP DRAWINGS: Contractor will be required to submit at least six copies of shop drawings on all materials and equipment. Three copies will be returned to the Contractor after review by the Engineer, and three copies will be retained by the Engineer. Should the Contractor require additional copies of shop drawings, equivalent additional copies must be submitted for approval. 13. PAYMENT FOR MATERIALS STORED ON SITE: If the Contractor elects to submit a request for payment based on materials stored on site, he shall include invoices for all materials stored on site and a cumulative monthly summary of all materials stored on -site in the periodical pay estimate. 14. NORTH CAROLINA SALES TAX: The Contractor shall comply with the procedures for reporting North Carolina Sales Tax payments as specified on Page 27 . 15. UNILATERAL CHANGE ORDERS: If during the project it is determined that changes to the scope of work bid are necessary, and an agreement cannot be reached between the Contractor and the Owner regarding the price for the work change, the Engineer shall be able to direct the Contractor to proceed with the work change as necessary to keep the project on schedule prior to an agreement being made on the price. 16. In addition to the requirements set forth in the Earthwork Section of these specifications, the Contractor shall also obtain a letter from the District Engineer for the North Carolina Department of Transportation, addressed to Koonce, Noble & Associates, Inc., Lumberton, North Carolina, stating that all cleanup work along the pipeline route, within D.O.T. rights -of - way, is acceptable to the D.O.T. The letter shall also contain a statement of approval of all pavement replacement sections within the D.O.T. rights -of -way. Department of Transportation Division of Highways District Engineer 615 Concord Road Albemarle, North Carolina 28001 704-982-0104 17. A copy of the Encroachment Agreement with the North Carolina Department of Transportation is enclosed with these specifications. The District Engineer's Office is to be notified prior to any work and notified in writing upon completion of the encroachment. All work within the North Carolina Department of Transportation right-of-way shall be accomplished in accordance with North Carolina Department of Transportation's latest Policies and Procedures for Accommodating Utilities on Highway Rights -of -Way. Work shall also be in compliance with Department of Transportation's latest Manual on Uniform Traffic Control Devices for Streets and Highways and The North Carolina Construction and Maintenance Operations Supplement. 18. ADDENDA: In general, no answer will be given in reply to an oral question if the question involves an interpretation of the intent or meaning of the drawings or specifications or the equality or use of products or methods other than those definitely designated or described on the drawings or in the drawings and Contract Documents. No information will be given to Bidders other than by means of the drawings and Contract Documents or by addenda as described below. To receive consideration, such questions must be submitted in writing to the Engineer, and to be given consideration, must be received at least ten days before the advertised date for the opening of bids. Any and all such interpretation and any supplemental instruction will be in the form of written addenda to the specifications. Failure of any Bidder to receive any such addendum or interpretation shall not relieve such Bidder from any obligation under his bid as submitted. All addenda so issued shall be issued at least 7 days prior to bid and shall become part of the Contract Documents. All addenda shall be submitted to Construction Grants for approval prior to opening of bids. Pr 19. PIPE SEPARATION: The following minimum pipe separation will be maintained: 18 inches vertical separation between crossing of sanitary sewer (including force main) and storm sewers, 18 inches vertical separation between crossing of sanitary sewer (including force main) and water mains, and 10 feet horizontal separation between sanitary sewer (including force main) and water mains. If these separations cannot be maintained, ductile iron pipe will be used 10 feet either side of crossing and along entire length of line less than 10 horizontal feet from water mains. The Contractor shall receive approval from the Engineer in the field before payment will be made at ductile iron prices. 20. INFILTRATION: Will be strictly measured by methods prescribed in the detailed specifications. The pipe will be required to meet the 100 gallon per inch mile/24 hr. of infiltration when the line is placed in service and be subject to meeting the 100 gallon per inch mile/24 hr. for the one year warranty period from the date of acceptance by the Town. 21. LAYOUT: The Engineer shall establish a baseline for the Contractor along the pipeline route and furnish necessary benchmarks. All other staking or layout required for construction shall be at the Contractor's expense. 22. The Contractor is instructed to control sedimentation run-off by methods approved by the Engineers, during the course of construction of this project. The Contractor is reminded that all work shall meet all applicable requirements of the Rules and Regulations for Erosion and Sediment Control as published by the Department of Environment and Natural Resources, Division of Water Quality. Erosion control shall also be performed in accordance with the requirements contained in the current edition of the North Carolina Department of Transportation Standard Specifications for Roads and Structures. 23. The cost of sedimentation and erosion control, and dust control, shall be considered an incidental part of construction of this project and shall not be paid for directly but shall be included in the unit price bid per l.f. of pipe. 24. No PVC pipe shall be delivered to the job more than six months after date of manufacture. Manufacturer shall supply explanation of code so date of manufacture can be read from pipe. 25. Shop drawings shall be furnished for but not limited to the following items: Pipe, fittings, manholes, manhole ring and cover, manhole coating, service material, detection tape and rany other items necessary for the prosecution of the work. All shop drawings shall be in conformance with the General Conditions. 26. All permits and licenses required by any City, County or any other unit of local government necessary for the prosecution of the work shall be paid for by the Contractor unless otherwise specified. Permits required by the State for operation of the facilities shall be obtained by the Owner. The Contractor shall give all notices and comply with all laws, ordinances, rules and regulations bearing on the conduct of the work as drawn and specified. If the Contractor observes that the contract documents are at variance therewith, he shall promptly notify the Engineer in writing, and any necessary changes shall be adjusted as provided in Section 13 of the General Conditions, Changes in the Work. 27. Pipe interior, sealing surfaces and other accessories shall be kept clean and gaskets shall not be exposed to oil, grease, ozone (produced by electric motors), or excessive heat. PVC pipe bundles shall be stored on flat surfaces with uniform support and stored PVC pipe shall not be exposed to sunlight for a period exceeding four (4) months unless provided with a canvas cover, (or other opaque material approved by the Engineer), with air circulation provided under the covering. 28. Rock Excavation: The Contractor shall be aware of the possibility of encountering rock during installation of the sewer line improvements. Boulders measuring '/2 cubic yard or more and materials that cannot be removed without systematic drilling and blasting, such as rock material in bedded deposits, Iedges, conglomerate deposits and unstratified masses, shall be considered rock. If rock is encountered in excavation, rock shall be removed to a depth of eight (8) inches below the bottom of the pipe. This eight (8) inches shall be refilled with select material. Payment for the rock cut shall be paid for at the unit price bid per cubic yard for rock cut. The yardage of rock cut to be paid for shall be the number of cubic yards in place in the ditch prior to removal not to exceed a depth of eight inches below the bottom of the pipe or the width established by Item .07A of the Earthwork Section of the specifications. Select material shall be paid for as established in the Earthwork Section of the specifications. Payment for Rock excavation will not be allowed unless it is proven that the Contractor has taken every effort to remove rock by a reasonable size excavator and that the rock is measured by the Engineer. r29 . Where existing stone driveways are crossed, the Contractor shall replace stone that is removed and shall return the driveway to a condition equal to or better than the condition prior to crossing with the sanitary sewer main. This shall not be a pay item but shall be included in the price of the pipe. 30. Sanitary sewer mains shall be ductile iron or PVC pipe as called for in the bid item. 31. Gravity mains installed through casing pipe under roads will not be paid for directly but the cost of the gravity main from manhole to manhole shall be included in the unit price for casing pipe. 32. After the new sanitary sewer main is placed into service, the Contractor shall abandon the existing 12" sanitary sewer outfall line by filling with grout the entire length of the line. This shall be paid for at the unit price bid for abandoning the 12" sewer outfall line. 33. Sequence of Construction for Manhole No. 5: a. Sheet 1, Manhole No. 5: Contractor shall install and receive the Engineer's approval of all gravity mains and manholes between the Rocky River and Manhole #4 prior to beginning construction from Manhole #4 to Manhole #5 on Sheet 1 of the plans. The Contractor shall also install a bypass pumping system to pump from the existing chlorine contact basin to the proposed Manhole #4 in accordance with the specifications prior to installing this section. Bypass pumping shall remain in place until the Engineer verifies Manhole #5 is ready to be placed into service. The Contractor shall then remove plugs and release flow from the chlorine contact chamber to Manhole #5. 34. When installing the gravity mains the following sections and tie-ins shall be left out until all other sections are complete and accepted by the Engineer to be placed into service. Section Sheet Manhole Nos. 1 2 MH. 5 — MH. 6 2 2 MH. 6 — MH. 7 3 3 MH. 8 -- MH. 9 4 4 MH. 23 — MH. 24 5 11 MH. E—MH. 39 Tie -In Sheet No. Manhole No. 1 7 ME. #31 2 10 MH. #40 3 10 Existing Manhole When the project is verified to be ready to be placed into service with the exceptions listed above the Contractor shall begin installing sections and tie-ins in the sequence as follows. Section 1 Section 2 Section 3 Section 4 Tie -In 1 Section 5 Tie -In 2 Tie -In 3 The Contractor shall complete each section or tie-in and receive the approval of the Engineer prior to proceeding to the next section or tie-in. All work will be done in accordance with the "Temporary Bypass Pumping Systems" section of the specifications. It is essential to the operation of the existing sewage system that there be no interruption of sewage throughout the duration of the project. 35. Tree Removal: Any tree with a diameter of six (6) inches or more, determined by the Engineer to require removal for the installation of the sewer shall be removed by the Contractor. All roots of such trees shall be removed to a depth of one foot below the grade line of the proposed pipe. All refuse from the tree removal shall be disposed of as cleared and grubbed material discussed in paragraph 05 of the "Site Work Section" of the specifications. Size shall be determined by diameter of the tree trunk five (5) feet above the ground. Payment for tree removal shall be made based on unit price bid for each tree removed and shall include removal and disposal of the entire tree and roots. Removal of trees with a diameter of less than six (inches) shall not be a pay item and shall be included in the unit price bid for pipe. r After the proposed gravity outfall is placed into service and all of the existing outfall has been removed from service and the mains have been grouted, the Contractor shall abandon the existing manholes as follows: Remove the manhole to a depth of one foot below grade and fill the remaining manhole with compacted fill material to grade. The Contractor shall be responsible for disposing of all refuse to an approved dump. The Method of Measurement shall be identical to measurement of proposed manholes and payment shall be made at the unit price bid for "Existing Sanitary Sewer Manholes to be Abandoned." 37. At any location where the bank of Norwood Creek is disturbed the Contractor shall reestablish the bank to original grade and line the bank with Class II Rip Rap to a minimum depth of 19 inches. This shall not be a pay item but shall be included in the unit price bid for gravity mains. 38. Casing spacers shall be used to install carrier pipe inside encasement pipe. Casing spacers shall not exceed a span of six feet. The casing shell shall be of T304 or higher grade stainless steel or high -density polyethylene. The liner shall be PVC or high -density polyethylene. Runners shall be ultra high molecular weight polymer or high -density polyethylene. Casing spacers shall not be paid for directly but shall be included in the unit price bid for steel casing pipe to be installed by boring. 39. The Bidder is notified that he shall bid both the Base Bid and the Alternate Bid. The Owner reserves the right to award the contract for this project based on either the low Base Bid or the low Alternate Bid. 40. The section of gravity main crossing under Norwood Creek on Sheet 5 of the plans at Station 39+00 and the section of gravity main crossing under the gully on Sheet 11 of the plans at Station 6+20 shall be installed during a dry period when the stream bed is dry or flow is very low. Installation of these crossings should proceed as quickly as reasonably possible. Backfilling and lining the banks and bed of the stream with rip rap as described in Special Provision 37 shall be done immediately after installation. Installation of each crossing shall begin early in the day and shall continue until installation of the rip rap lining is completed. lE 9lir?, QG r wuicnaet r. tasrey, Governor William G. Ross Jr., Secretary North Carolina Department of Environment and Natural Resources Gregory J. Thorpe, Ph.D. Acting Director Division of Water Quality tiErr. OF ENVIRONMENT `•..r7's=ar ''Sr)URCES • • '' Qr F CE August 28, 2000 Honorable Darrell Almond, Mayor Town of Norwood Post Office Box 697 Norwood, North Carolina 27218-0697 SUBJECT: Permit No. WQ0020249 Town of Norwood Outfall Line Replacement Stanly County Project No. E-SRG-T-01-0114 Dear Mayor Almond: AUG 3 1 2001 In accordance with your application received July 6, 2001, we are forwarding herewith Permit No. WQ0020249 dated August 28, 2001, to the Town of Norwood for the construction and operation of the subject outfall. This permit shall be effective from the date of issuance until rescinded, and shall be subject to the conditions and limitations as specified therein. If any parts, requirements, or limitations 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 permit. This request must be in the form of a written petition, conforming to Chapter 150B of North Carolina General Statutes, and filed with the Office of Administrative Hearings, 6714 Mail Service Center, Raleigh, N. C. 27699-6714. Unless such demands are made, this permit shall be final and binding. Upon completion of construction and prior to operation of this permitted facility, a certification must be received from a professional engineer certifying that the permitted facility has been installed in accordance with the approved plans and specifications. Mail the Certification to the Non -Discharge Branch, 1617 Mail Service Center, Raleigh, North Carolina 27699-1617. (Engineer's Certification Form is attached.) One (1) set of final approved plans and specifications is to be forwarded to you, one (I) set retained for the Construction Inspection Unit, and one (1) set retained for the SRG file. Construction Grants & Loans Section 1633 Mail Service Center Raleigh, NC 27699-1633 (919) 733-6900 Fax (919) 715-6229 Internet Address: www. nccgl.net —14 NC17ENf Customer Service 1 800 623-7748 2 - A copy of the approved plans and specifications shall be maintained on file by the Owner for the life of the project. If there are any questions concerning this matter, please contact Mr. Cecil G. Madden, Jr., P.E. at (919) 715-6203. Sincerely, regory J. Thorpe, h.D. Acting Director Attachment to All JM/nw cc: Koonce, Noble and Associates, Inc. Stanly County Health Department Mooresville Regional Office Non -Discharge Unit Dan Blaisdell, P.E. Joe Martin, Jr., P.E. Don Evans Cecil G. Madden, Jr., P.E. SRG I NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES RALEIGH WASTEWATER COLLECTION PERMIT In accordance with the provisions of Article 2I of Chapter 143, General Statutes of North Carolina as amended, and other applicable Laws, Rules, and Regulations PERMISSION IS HEREBY GRANTED TO Town of Norwood Stanly County FOR THE construction and operation of approximately 9,570 linear feet of I8-inch gravity sewer interceptor, to replace the existing interceptor; and associated appurtenances, pursuant to the application received July 6, 2001, and in conformity with the project plans, specifications, and other supporting data subsequently filed and approved by the Department of Environment and Natural Resources and considered a part of this permit. This permit action authorizes no additional flow to the Town of Norwood's existing collection system or wastewater treatment plant. This Permit shall be effective from the date of issuance until rescinded, and shall be subject to the following conditions and limitations: 1. This permit shall become voidable unless the facilities are constructed in accordance with the conditions of this permit, the approved plans and specifications, and other supporting data. 2. This permit is effective only with respect to the nature and volume of wastes described in the application and other supporting data. 3. The facilities must be properly maintained and operated at all times. The sewage and wastewater collected by this system shall be treated in the Town of Norwood Wastewater Treatment Facility prior to being discharged into the receiving stream. 5. This permit is not transferable. In the event there is a desire for the facilities to change ownership, or there is a name change of the Permittee, a formal permit request must be submitted to the Division of Water Quality (Division) accompanied by an application fee, documentation from the parties involved, and other supporting materials as may be appropriate. The approval of this request will be considered on its merits and may or may not be approved. 6. Construction of the sewers shall be scheduled so as not to interrupt service by the existing utilities nor result in an overflow or bypass discharge of wastewater to the surface waters of the State. 7. Upon completion of construction and prior to operation of this permitted facility, a certification must be received from a professional engineer certifying that the permitted facility has been installed in accordance with this permit, the approved plans and specifications, and other supporting materials. If this project is to be completed in phases and partially certified, you shall retain the responsibility to track further construction approved under the same permit, and shall provide a final certificate of completion once the entire project has been completed. Mail the Certification to the Non -Discharge Branch, 1617 Mail Service Center, Raleigh, North Carolina 27699-1617. (Engineer's Certification Form is attached.) S. A copy of the approved plans and specifications shall be maintained on file by the Permittee for a minimum of five years from the date of the completion of construction. 9. Failure to abide by the conditions and limitations contained in this permit may subject the Permittee to an enforcement action by the Division, in accordance with North Carolina General Statute 143-215.6A to 143-215.6C. 10. The issuance of this permit does not preclude the Permittee from complying with any and all statutes, rules, regulations, or ordinances which may be imposed by other government agencies (local, state, and federal) which have jurisdiction. 1 I . In the event that the facilities fail to perform satisfactorily, including the creation of nuisance conditions, the Permittee shall take immediate corrective action, including those as may be required by this Division, such as the construction of additional or replacement wastewater collection facilities. 12. The facilities shall be constructed in accordance with the requirements of the North Carolina Sedimentation Pollution Control Act. 13. Any abandoning of the existing facilities must be done in accordance with the requirements of the Division of Water Quality's Mooresville Regional Office. I NONCOMPLIANCE NOTIFICATION: 14. The Permittee shall report by telephone to the Mooresville Regional Office, telephone number (704) 663-1699, 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 either of the following: a. Any process unit failure, due to known or unknown reasons, that renders the facility incapable of adequate wastewater transport, such as mechanical or electrical failures of pumps, line blockage or breakage, etc.; or b. Any failure of a pumping station or sewer line resulting in a by-pass directly to receiving waters without treatment of all or any portion of the influent to such station or facility. Persons reporting such occurrences by telephone shall also file a written report in letter form within five (5) days following first knowledge of the occurrence. This report must outline the actions taken or proposed to be taken to ensure that the problem does not recur. Permit issued this the 28th day of August, 2001. NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION gory J. Thorpe, Ph.D. Acting Director ivision of Water Qualit y Authority of the Environmental Management Commission Permit No. WQ0020249 Permit No. WQ0020249 Non -Discharge Permit Town of Norwood ENGINEER'S CERTIFICATION I, , as a duly registered Professional Engineer in the State of North Carolina, having been authorized to observe (periodically/weekly/full time) the construction of the Town of Norwood Outfall Line Replacement serving the Norwood area, located in Stanly County, hereby state that to the best of my abilities, due care and diligence was used in the observation of the following construction: Approximately 9,570 linear feet of 18-inch gravity sewer. I certify that the construction of the above referenced project was observed to be built within substantial compliance and intent of the approved plans and specifications. Signature Registration No. Date Mail this Certification to: DENR/DWQ Non -Discharge Branch 1617 Mail Service Center Raleigh, North Carolina 27699-1617. DIVISION OF WATER QUALITY May 11, 1999 MEMO TO: Jay Lucas FROM Rex Gleason Prepared By: Samar Bou-Ghazale SUBJECT: Town of Norwood Wastewater Treat nt Plant Improvements And Ou`tfall Line placement Preliminary Engineering Report Stanly County, N.C. As requested by your memo dated April 13, 1999, this Office has reviewed the preliminary engineering report submitted by Koonce, Noble and Associates, Inc. for the Town of Norwood. The Town wishes to replace old sewer lines, repair the North Main Street sewage pump station and upgrade the existing wastewater treatment plant in order to address existing deficiencies and to meet future growth demands. This Office has no objections to the project as proposed. If you have any questions regarding this matter, please advise. ENVIRONMENTAL ASSESSMENT FOR THE TOWN OF NORWOOD, NORTH CAROLINA. KOONCEE, NOBLE AND ASSOCIATES, INC. CONSULTING ENGINEERS LUMBERTON, NORTH CAROLINA MARCH, 1999 ENVIRONMENTAL ASSESSMENT FOR THE TOWN OF NORWOOD, NORTH CAROLINA KOONCE, NOBLE AND ASSOCIATES, INC. CONSULTING ENGINEERS LUMBERTON, NORTH CAROLINA MARCH, 1999 .O(`](:et GARQ '.,, ♦ s•` _ ..,, , �� °• SL 3954EA r-xF ENVIRONMENTAL ASSESSMENT I. INTRODUCTION: The Town of Norwood is located in southeastern Stanly County, North Carolina, adjacent to Lake Tillery, approximately ten miles from Albemarle, the County seat. Stanly County is located in south central North Carolina and is bounded by Rowan County to the north; Montgomery County to the east; Cabarrus County to the west; and Anson and Union Counties to the south. This project will involve the rehabilitation and upgrade of the wastewater treatment plant and replacing a sanitary sewer outfall line in Norwood, North Carolina. Some of the individual treatment systems at the wastewater treatment plant are beginning to show signs of wear from extended use and oxidation from exposure to a corrosive environment. New facilities will be added to the existing plant to improve the effluent water quality. Currently, the wastewater treatment plant does not have any sludge digester volume; therefore, an aerobic digester will be added to the system. Due to the age and condition of the existing clarifiers, they will be rehabilitated with all mechanical parts being replaced. The influent flow meter and parshalI flume will be reconfigured for improved accuracy in recording influent flows. The chlorine contact basin will be enlarged to increase chlorine contact times. A dechlorination system with autopacing will be added to the system. Additional sludge drying beds will also be added at the plant. The Norwood Creek sanitary sewer outfall line was constructed in the late 1950s of twelve - inch vitrified clay pipe. This outfall line will be abandoned and replaced with an eighteen -inch line. Also included in this project is the rehabilitation of the North Main Street Pumping Station, which is currently in poor condition. II. EXISTING ENVIRONMENT: A. Demographics: According to the 1997 state demographic data from the Office of State Planning, the Town of Norwood, North Carolina, has a population of 1,943 (55,131 for Stanly County). However, there are 12 residential customers outside the Town of Norwood. Therefore, we estimate the total population of the water system to be 1,985. There are also approximately 180 new users that have been annexed but have not been connected. This would bring the total population to 2,519. The projected population of Stanly County in July, 2019, is 63,715, which is 1 equivalent to a 20-year growth rate of 13.4%. Assuming that the growth rate of Norwood will be equivalent to that of Stanly County, the 20-year projected population will be 2,965. B. Topography: Norwood is located in a physiographic region characterized by terrain that is highly dissected by intermittent streams, gently sloping or undulating ridgetops and hilly to steep slopes along the streams. Elevations in Norwood and vicinity range from 275 to 430 above MSL. C. Land Use:- Primary land use in Norwood includes residential, commercial, industrial and recreational. There are some forested areas where the outfall line will be located; however, the line will be constructed in an existing easement. D. Soils: Four soil associations occupy the project area. The soil in the vicinity of the wastewater treatment plant consists of Goldston silt loam. This well -drained soil has a rapid surface runoff rate and a moderately rapid peimeability. The available water capacity is low. Other soils along the outfall line consist of the following: Badin channery silt loam, a well -drained soil on narrow ridges that are highly dissected by intermittent drainageways. This soil will erode where areas are bare. Badin-Urban land complex is well drained with a silt loam surface layer. Susceptibility to erosion is very severe. In lower areas is the Oakboro silt loam. This soil is nearly level and moderately well drained. The upper part of this soil is a silty clay loam with yellowish brown mottles. E. Surface Waters: The existing and proposed outfall lines mostly run adjacent to Little Cedar Creek. Great care will need to be taken to prevent sediment from entering the creek. Effluent from the wastewater treatment plant discharges to the Rocky River. The Rocky River empties into the Pee Dee River. F. Groundwater: Groundwater supplies are considered adequate in Norwood. Although Norwood uses surface water for its water system, there are small communities that use well water. The project should not affect groundwater quality in these areas. 2 III. PROJECT NEED: The proposed project involves upgrading, refurbishing, and replacing old systems in the wastewater treatment plant. The project will also involve replacing a sanitary sewer outfall line. The existing wastewater treatment plant currently does not have an aerobic digester and enough sludge drying bed capacity needed to digest and de -water the sludge that accumulates in the system. An aerobic digester and additional sludge drying beds are needed. This will allow the system to remove more solids and metals from the effluent. The project also involves the following: modifying the parshall flume; providing new aerators in the aeration basin; rehabilitating the clarifiers; expanding the chlorine contact tank; adding a dechlorination system; and replacing the sludge return pumps. The addition of aerobic digester volume will also assist in the reductions of pathogens contained in the sludge. There have been NPDES violations for high effluent suspended solids and the effluent has failed chronic toxicity tests. The dechlorination system will assist with chronic toxicity and the aerobic digester will assist with removal of suspended solids. The existing collection system consists of approximately 15 miles of sanitary sewer main and several sewage pumping stations. Of particular concern is the 12-inch vitrified clay pipe outfall line along Little Cedar Creek. This line was installed in the late 1950s and is known to have infiltration and inflow problems. Flow monitoring done on this line during January and February, 1999, indicated infiltration of 163,000 gpd or 6,820 gallons per inch diameter mile (GPDIM). Infiltration and inflow greater than 3,000 GPDIM is considered excessive. Portions of this line have been examined with t.v. cameras and the video shows that the line is in very poor condition. This outfall line will be abandoned and a new 18-inch line will be emplaced parallel to the existing line. Replacement of this line should eliminate a substantial portion of the infiltration and inflow into the wastewater system. Heavy infiltration and inflow after a substantial rainfall event has the potential to create high peak instantaneous flows, which can result in the washout of clarifiers. This will result in a negative environmental impact of the Rocky River. Norwood has had several violations of the NPDES permit due to excessive flows. The North Main Street Pumping Station is in poor condition and will be rehabilitated. This pump station is in desperate need of repair. It is operating at or near its capacity and has been known to overflow periodically. There should be no major soil disturbance for this part of the proj ect, 3 IV. ALTERNATIVE ANALYSIS: There are three alternatives for the outfall line; no action, rehabilitation and replacement. No action would leave significant amounts of infiltration in the line and the Town of Norwood would exceed the flow limits in the NPDES Permit. Rehabilitation would remove a portion of the infiltration and inflow but would not increase the capacity. Replacing the line with an 18-inch line would remove more infiltration than any other alternative and would increase capacity. The alternative to upgrading the wastewater treatment plant is to take no action. If this alternative is chosen, the Town will continue to violate the NPDES Permit and receive additional fines. The money spent by the Town to pay these fines could be better spent on maintenance. In addition to fines, the effluent quality will affect the water quality of the Rocky River and subsequently the Pee Dee River. The alternative to upgrading the North Main Street Pumping Station is to take no action, which will result in future raw sewage overflows. V. ENVIRONMENTAL CONSEOUENCES: A. Changes in Land Use: There will be minimal changes in land use with this project. There will be very little clearing and grubbing required for the new facilities at the wastewater treatment plant. There is sufficient room for expansion around the existing facility. The new outfall line will be constructed in an existing, previously disturbed utility easement. There will be no change in land use for the pump station upgrade. B. Wetlands and Floodplains: There are a few areas in the proposed outfall line route that are considered wetlands areas and floodplains. The new outfall line will cross Little Cedar Creek; however, the crossing will be made perpendicular and at a narrow section of the creek. In addition, construction in this area will be limited to months where potential impacts of sedimentation and turbidity from construction on spawning activities of fresh -water species will be minimal. Prior to any construction of any part of this project, a complete Erosion and Sedimentation Control Plan will be submitted for State approval. C. Prime or Unique Agricultural Lands: This project will not involve any impact to agricultural lands. 4 D. Public Lands: There are no public land areas that will be affected by this project. E. Scenic and Recreational Areas: This project will not affect any scenic or recreational areas. F. Areas of Archeological or Historic Value: There are no known areas within the project area of archeological or historic value. G. Air Quality: This project should not have any substantial impact on air quality. The only changes in air quality will be short term from engine exhaust from construction equipment. H. Groundwater Quality: Impacts on groundwater related to construction will be moderate and short term. Some lowering of the water table may be required in a few areas but should not have any significant adverse impacts. I. Noise Levels: Impact on noise levels related to construction will be moderate and short term. The noise level at the pump station will not substantially increase. J. Water Supplies: This project should have no adverse affects on existing water supplies. The improvements at the wastewater treatment plant should improve quality of the effluent. The Town of Norwood receives its water supply from Lake Tillery, which will not be affected by this project. K. ShelIfish or Fish and Their Habitat: To the best of our knowledge, no threatened or endangered aquatic species have been identified in the project area or its immediate vicinity. Any impact to the aquatic environment will be minimal and short-term in nature. All construction will take place in existing urban areas or in existing easements previously disturbed. L. WiIdlife and Their Habitats: No threatened or endangered species both animal and plant have been identified in the project area. A majority of the project area exists near roads and 5 areas that will not support a substantial amount of wildlife. However, any impacts to wildlife and their habitat will be short term in nature. M. Introduction of Toxic or Hazardous Substances: No known toxic or hazardous substances will be introduced into the environment as a result of this project. N. Receiving Waters: This project should improve the quality of effluent that is discharged into Little Cedar Creek. Facilities are being added to remove heavy metals and a dechlorination system will remove residual chlorine that is toxic to aquatic life in the receiving stream. Special emphasis will be taken with the installation of the new outfall line to prevent sedimentation into Little Cedar Creek. O. Indirect or Secondary Impacts: There should be no indirect or secondary impact to the environment from this project from construction or effects after project completion. VI. MITIGATIVE MEASURES: Prior to any construction, a complete erosion and sedimentation control plan will be submitted to the Division of Land Resources, for approval by the State. In order to avoid significant adverse impact to the environment from this project, the Erosion and Sedimentation Control Plan will be strictly followed. The soils in the project area for the outfall line are susceptible to severe erosion. After construction, seeding and mulching will be conducted as soon as possible to restore vegetation. Construction in critical areas along Little Cedar Creek and at the crossing site will be conducted during times that will not affect spawning and at times when the water level is low. The crossing area will be located at a point where the creek narrows and the crossing will be parallel to the creek. 6 d PROPOSED 18" OLTFALL 5P7L PRELIMINARY ENGINEERING REPORT STEWATER TREATMENT PLANT IMPROVEMENTS AND OU'TFALL LINE REPLACEMENT FOR THE TOWN OF NOR%% OOD, NORTH CAROLINA APR 13 1999 KOONCE, NOBLE AND ASSOCIATES, INC. CONSULTING ENGINEERS LUMI3ERTON, NORTH CAROLINA MARCH, 1999 PRELIMINARY ENGINEERING REPORT WASTEWATER TREATMENT PLANT IMPROVEMENTS AND OUTFALL LINE REPLACEMENT FOR THE TOWN OF NORWOOD, NORTH CAROLINA KOONCE, NOBLE AND ASSOCIATES, INC. CONSULTING ENGINEERS LUMBERTON, NORTH CAROLINA MARCH,1999 ss,`i��11111flfrplrrr,, �YL CARo ►� •F�SSl�" • Table Of Contents L Summary, Conclusion and Recommendation 1 II. Current Situation 1 III. Future Situation 3 IV. Alternatives 4 V. Detailed Project Description 4 W. Preliminary Opinion Of Probable Cost 6 VII. Present Worth Analysis 9 Appendix A Maps and Flow Schematic Appendix B Calculations Appendix C NPDES Permit Appendix D Monthly Flow Data Appendix E Climate Data P €E IMINARY ENGINEERING L EPO SUMMARY, CONCLUSTI}N AND REECOMMENDAT1ON The Town of Norwood's Wastewater Treatment Plant needs to be upgraded to reliably meet discharge limits. The items to be upgraded are as follows. 1, Modify parshall flume, ?. Provide new aerators. Rehabilitate clarifier.. New digester. 5. Expand chlorine contact tank. 6. Add dechlorin.ation system with autopacing. 7. Replace existing sludge return pumps. 8. New drying beds. 9. Rehabilitate the North Main Pumping Station. Also, the main outfall to the wastewater treatment plant has excessive infiltration and is to be replaced with a new 18-inch diameter outfall line. II. CURRENT SITUATION; A. Collection System: 1, Description: The Town of Norwood's sanitary sewer sprovides service to approximately 750 customers. The Town maintains a 750,000 gallons per day Grade II extended aeration type wastewater treatment plant. The treatment plant is effectively treating the average wastewater flow of approximately 530,000 gallons per day. The existing collection system consists of approximately 1.5 miles of sanitary sewer main and several sewage pumping stations. The majority of the sanitary sewer system is over 30 years old and may be susceptible to excessive levels of infiltration and inflow, Of particular concern is the 12" VCP Norwood Creek autfall line, This line was installed in the late 1 y50's and is known to have infiltration and inflow problems. Replacement of this line should eliminate a substantial portion of the infiltration and inflow into the wastewater system, The existing sewage pumping stations, with the exception of the North Main Street sewage pump forth Main Street sewage station, are in good condition, and are adequate for continued use. pumping station, however, is in desperate need of upgrade and repair. This sewage pumping station is operating at or near its capacity and has been known to overflow periodically. Infiltration: The Town of Norwood's sewage collection system has excessive infiltration. Infiltration for the entire system is estimated to be 4,113 gallons per day per inch -mile (GPDIM) (see calculations), which exceeds the criteria of 3,,000 GPDIM. Also, the 1.2-inch outfall line to the wastewater treatment plant is definitely subject to excessive infiltration. Flow monitoring done on this line during January and February, 1999, indicates infiltration of 163,000 GPD or 6,820 GPDIM. (See calculations). Also, portions of this line have been examined with t.v. cameras and the video shows the line is in very poor condition, 3. Inflow: The Town of Norwood.'s sewage collection also has excessive inflow. Inflow for the system is estimated to be 442 GPD/Capita. (See calculations). B. Wastewater Treatment Plant: I. Headworks: The headworks consists of a bar screen., grit chamber and parshall flume. The bar screen and grit chamber are satisfactory but there is a hydraulic, problem with the parshall flume. The flow makes a 90° turn before entering the parshall flume, which causes turbulence and prevents accurate how readings. The channel should be extended and the flume relocated. 2. Aeration Basin: The facility ➢ra.s two aeration basins with a capacity of 375,000 gallons each. Each basin has 2-15 hp floating aerators. The aerators are old and need to be replaced. Clarifiers: The facility a. 33-foot diameter clarifiers. The capacity of these clarifiers is adequate but the equipment is old and worn out. All niecha.nica'1 equipment, weirs and baffles should be replaced. 4. Chlorine Feed System: The chlorine contact tanks are undersized and should be expanded. Also, the facility needs to have dechlorination with autopacing i nstalled. 5. Aerobic Digestion: The facility does not currently have an aerobic digester; therefore, a new digester should be included in the project. The facility does have a converted Imhoff Tank that is used as a sludge holding tank but it is undersized and leaks. 6. Sand Drying Beds: The exiting sand drying beds are adequate but do not have sufficient capacity. Sludge Return Pumps: There are three (3) 75 hp sludge return pumps' located in the control building. 1:hey are old and worn out and should be replaced. C. PopuIation and Demographics: According to 1997 state demographic data from the Office of State Planning, the Town of Norwood, North Carolina, has a population of 1,943 (55,131 for Stanly County). However, there are 12 residential customers outside of the Town of Norwood. Therefore, we estimate the total population of the water system to be 1,985. There are also approximately 180 new users that have been annexed but have not yet been connected. This would bring the total population to 2,519. D. Existing Flows: The current flows based on billing records, less 10% and adjusted for the number of sewer customers as opposed to water customers for the month of February, is as follows: Commercial and Institutional 34,200 gpd Industrial 125,198 gpd Residential 89,044 gpd 248,442 gpd III. FUTURE SITUATION: The projected population for Stanly County in July, 2019, is 63,715, which is equivalent to a 20-year growth rate of 13.4%. The current sewered population of Norwood is 2,519, including newly annexed areas. Therefore, the 20-year projected population is 2,965. The 20-year projected flow is as follows: Residential 2,856 @ 70 gpd/capita 199,920 Commercial 2,965 @ 15 gpd/capita 42,840 Industrial Reserve 24,844 Existing Industrial 125,198 TOTAL PROJECTED FLOW WITHOUT III 392,802 Infiltration Inflow 526,000 Remove I/I from Outfall - 163,000 Future I/I Removal 6,000 TOTAL PROJECTED FLOW 749,802 gpd Design Flow 750,000 gpd 3 IV. ALTERNATIVES A. Outfall Line: There are three alternatives for the outfiull Iine; no action, rehabilitation and replacement. No action wouldleave significant amounts of infiltration in the line and the Town of Norwood would exceed the flow limits in the NPDES Permit. Rehabilitation would remove a portion of the infiltration and inflow but would not increase the capacity. Replacing the line with an 18-inch line would remove more infiltration than any other alternative and would increase capacity, B. Wastewater Treatment Plant Upgrade: The alternative to upgrading the wastewater treatment plant is to take no action. If this action is chosen, the Town would probably not continue to comply with the NPDES Permit and wastewater not properly treated would be discharged to the Rocky River.. Upgrading the wastewater treatment plant will allow the Town to continue .he NPDES Permit and protect the water quality of the Rocky River. C. North Main Street Pumping Station: The alternative to not upgrading this station is to take no action. Since this station is in such poor condition, this would result in raw sewage overflows. V. DETAILED PROJECT .DESCRIPTION: A. Wastewater. Treatment Plant Upgrade: 1. Modify Parshall 'Flume: The existing parshall flume does not provide accurate readings because a 90° turn immediately in front of the flume causes turbulence. The channel will be extended so the flume can be located downstream of the turbulence caused by the 90turn, 2. Provide New Aerators: The existing aerators shall be replaced with new aerators. Two 25 hp floating aerators will be furnished for each basin, 3 Rehabilitate Clarifiers: The existing aerators have adequate capacity hut the mechanical equipment is worn out. All mechanical equipment. weirs and baffles will be replaced with new equipment. 4. New Digester: The existing facility does not have a digester so a new one will be provided with a capacity of 60 days. The new digester will be dual interconnecting basins with a total volume of 34,400 cubic feet. 4 5. Expand Chlorine Contact Tank: The existing chlorine contact tank will be expanded to provide a total volume of 2,100 cubic feet. This will provide 30 minutes detention at design flow. 6. Dechlorination System with Autopacing: A sulfur dioxide feed system will be furnished. Autopacing will be provided for both the chlorine and sulfur dioxide systems. 7. RepIace Existing Sludge Return Pumps: The existing sludge return pumps shall be replaced with new pumps. Existing piping will be utilized as much as possible. 8. New Drying Beds: Ten new drying beds will be furnished. This will provide 12 cycles per year at design flow. 9. Rehabilitate North Main Pumping Station: New pumps and controls will be furnished for the North Main Pumping Station. B. Outfall Line: The existing outfall line will be replaced with an I8-inch ductile iron line parallel to the existing route. 5 VI. PRELIMINARY OPINION OF PROBABLE COST A. Norwood Wastewater Treatment Plant Upgrade: 1. Parshall flume modification $ 10,000.00 2. New aerators $ 50,000.00 3. Rehabilitate clarifiers $130,000.00 4. New digester $205,000.00 5. Modify C12 contact tank $ 25,000.00 6. Dechlorination system with autopacing $ 15,000.00 7. New drying beds $160,000.00 8. Rehabilitate North Main Pumping Station $ 50,000.00 9. Piping $ 80,000.00 10. Sitework $ 50,000.00 11. Electrical $ 25,000.00 12. Replace Sludge Pumps $ 50.000.00 TOTAL CONSTRUCTION COST S850,000.00 Construction Cost $850,000.00 Legal and Administrative $ 7,500.00 Engineering — Basic $ 68,000.00 Construction Observation $ 43,000.00 Environmental Assessment $ 5,000.00 Preliminary Engineering Report $ 5,000.00 Testing $ 2,500.00 O & M Manual $ 10,000.00 Contingencies $ 85,000.00 TOTAL PROJECT COST S1,076,000.90 6 PRELIMINARY OPINION OF PROBABLE COST B. Outfall Line Replacement: 1. 18" Ductile Iron Pipe (6-8) 10,500 I.f. @ $61.00 $640,500.00 2. Standard 4' Diameter Precast Manhole (6-8) 35 ea. @ $2,200.00 $ 77,000.00 3. Stone for Bedding 2,000 tons @ $21.00 $ 42,000.00 4. 60' Bore — 36" Steel Casing 601.f. @ $375.00 $ 22,500.00 5. Rock Excavation 3,500 c.y. @ $41.00 $ 143,500.00 6. Select Material (Borrow Sand/Clay) 5,000 c.y. @ $7.00 $ 35,000.00 7. Seeding and Mulching 4.0 ac. ® $2,500.00 $ 10,000.00 TOTAL CONSTRUCTION COST S970,500.00 Construction Cost $970,500.00 Engineering — Basic $ 78,000.00 Construction Observation $ 50,000.00 Environmental Assessment $ 5,000.00 Preliminary Engineering Report $ 5,000.00 Subsurface Investigation $ 8,500.00 Contingencies $ 97 000.00 Land Acquisition $ 8,000.00 TOTAL PROTECT COST 1,222,000.00 7 TOTAL CONSTRUCTION COST (All Projects) WWTP Upgrade Outfall Line Replacement Legal and Administrative Engineering — Basic Construction Observation Environmental Assessment Preliminary Engineering Report Testing & Subsurface Investigation O&M Manual Contingencies Land Acquisition TOTAL PROJECT COST $ 850,000.00 $ 970,500.00 $ 7,500.00 $ 146,000.00 $ 93,000.00 $ 10,000.00 $ 10,000.00 $ 11,000.00 $ 10,000.00 $ 182,000.00 $ 8,000.00 $ 2,298,000.00 8 VII. PRESENT WORTH ANALYSIS: Wastewater Treatment Plant: Capital Cost $1,076,000.00 Annual 0 & M $ 200,000.00 Salvage Value (20 years) $ 500,000.00 Discount Rate $ 6.875% Present Worth = Project Cost + Annual Cost x (10.7035) — Salvage Value x (0.2667) Present Worth= $1,076,000.00 + $2,140,700.00 - $133,350.00 Present Worth = $3,083,350.00 Outfall Line: Replace Outfall Capital Cost Annual O & M Salvage Value Discount Rate $1,222,000.00 $ 5,000.00 $ 611,000.00 6.875% Present Worth = Project Cost + Annual Cost x (10.7035) -- Salvage Value x (0.2667) Present Worth = $1,222,000.00 + $53,517.50 - $162,953.70 Present Worth = $1,112,563.80 No Action Capital Cost $ 611,250.00 Annual O & M $ 58,467.00 Salvage Value 0 Discount Rate 6.875% Present Worth = Project Cost + Annual Cost x (10.7035) — Salvage Value x (0.2667) Present Worth = $611,250.00 + $625,801.53 - $ 0 Present Worth = $1,237,051.53 9 APPENDIX A MAPS AND FLOW SCHEMATIC APPENDIX B CALCULATIONS 1 1 1 1 1 1 INFILTRATION Month Water Sold (Gallons) Adjust. No. Water Gusts.* (Gallons) Adjust 10% Loss (Gallons) Expected Daily Flow (GPD) Avg. Metered Daily Flow (GPD) Infiltration (GPD) 2/98 9,121,585 6,244,586 5,620,127 200,719 740,000 539,281 3/98 9,960,190 6,818,690 6,136,821 197,962 773,000 575,038 4/98 11,685,960 8,000,142 7,200,128 240,004 705,000 464,996 Total 1,579,315 *There are 1,097 water customers and 751 sewer customers Avg. Infiltration - 526,438 gpd App. System = 128 Inch Diameter Miles Infiltration = 4,113 gpd Inflow: Metered Calculated Rainfall Flow Flow* Date (Inches) (MGD) (MGD) 1/19/99 0 .807 .775 1/20/99 0 .776 .685 1/21/99 0 .733 .600 1/22/99 0 .638 .560 1/23/99 1.21 1.089 0.985 *Flow has been adjusted for turbulence (See B.2.a) Q = 0.985 MGD * (Calculated) Expected Flow = 0.248 MGD Infiltration = 0.526 MGD Inflow = 0.278 MGD Inflow/Inch Rain = 0.230 MGD Total Flow After 1-Inch Rain = 1.004 MGD Existing Service Population = 1,985 Industrial Flow = 0.125 MGD Flow/Capita = 442 gpd/capita Excessive 12" Outfall Line: Average Infiltration = 163,000 gpd (See attached flow monitoring records) D=12" L = 10,500 1.f. 23.9 inch diameter mils Infiltration = 6,820 GPDIM OTJTFALL LINE - FLOW MONITORING Date WWTP --1--- r� Flow Charted ^:Calculated Anson Turner Aeroquip ;Total IPercer-d ;Percent Meter Flow Fiow Flow Flow_ F_lo_w F_lo_w Infiltration flhlration 118/99 i 1•Catcuiated Charted 119199 _0.589 0,491 0.471 r 0.168274 0.075095 0.098369 0.341738' 0.2744421 0.302576 1/10/99 0.5581 0.429r---0.4011 0.149285 0.060611 074228 0.284324 0.290963 0.331002 1/11199 0.606! ' 0751 ^ 0.4481 0,146493 0,05257 0,1328041 0.331854 0.259254 0.349306 1/12/99 . 0694 0.605 ---0.541 0.151872 6.634162 0.135707 0.3227411 0.403436 0.486544 1/13199 _ 0,548 0.44 0.429 0.162936 0.039767 6.129799 0.332502 0,224937 0.244314 1/54199 �0.642 0.55 0.482 0.171341 0.036822 0.118726 _0.328889 0.321807 0.405858 µ 1/15/99 _ 0.998 0.95 `0.918 07273524 0.169291�0.221126 0.66394_ 01 276753�0.301115 1/16/99 0,738 0.85 0.588 0.188995 0,107172 0.096574 0.393041, 0.331563' 0.3953.22 1/17/99 1-- _ 0.807 0.74 0.629 0.18278 0.105336 0.102941 0.391057 0.378288 0.471545 1/18199 1,07 D.985 0.964 0.271149 0.218201 0.214834 0.704184 0.?84366 0.285092 1/19/99 0.807 0.775 0,678 0.199279 0.125273 0.148025 0.472577 0.302984 0.390223 1/20/99 0.778 0.885 0.621 0.175593 0.093568 0,131544 0,400705 07354742 0.415029 1121/99 ___ 0,733 0.6 0.586 0.154109 0.05794 0.124539 0.336588 0.425618. 0,43902 1/22/99 y0.638 0.56 0.479 0.166934 0.060597 O'107928 0.335459 0.299658 0.400968 1/23/99 _-11.089 0.985 �1.001 0.489996 0.157942 0.198127 0.846065 0.15478 0.141051 1/24/99 1.092 0.99 ' jA0•5 1.141883 0_278274 1068472 2.488629-1.47625 -1.51377 1/25/99 1.062 0.975 0.977 0.8222 0.157664 0,543173 1.323037-0.35418 -0.3569E 1/26/99 1.005 0.95 0.925 0.382846 0.116187 0.311203 0,790235 0.145691 0.168173 1/27/99 0.94 0.875 0.855 0.298659 0.069081 0.232773 0.600513 07297648 0.313599 1/28/99 0.817.. 0.71 0.854 0.219503 0.047865 '0.1947591- 0.462127 0,293364 • 0.349117 __ 1/29/99 ._ 0.711 0.625 0.569 0.188169 0.059668 0,155784 0.403821 0.290649 0.354208 _ .____. _ 0,576 0.475 0.432 0.154583 0,089343 0.071111 0.315037 0.270748 0.338764 1/31/99 0.552 0.43 0.414 0.121665� 0.100453 0.043464 0.265582 0,358498 0.382367 211/99 1.07 1 0.984 0.300548 0.217146' 0.2591362 0.776756 0.210814 0.223244 2/2/99 1.211 1.19 1.114 0.583285 0.354187 ;; 07391428 1.3289 -0.19291 -0.11672 2/3/99 1.184 1.1 1.071 0.415274 0.252306' 0.213389 0.880969 0.177433 0.199119 2/4/99 1.002 0.95 0.952 0.304119 0.193402 0.200222 0.697743 0.267077 0.255534 .2/5/99 0.887 0.76 0.684 0.234765 0.125683 0.165752 _ 0.5256 D 231579 0.326154 2/6/99 0.783 0.688 0.603 0.201849 0.119059 0.103768 0.424678 0.295728 0.382738 2/7199 0.717 0.845 0,538 0.178597 0.110644 0.84557 1.134811 -1,10931 -0.7594 2/8/99 0.721 0.848 0.541 0.147914 0.109836 0.134044 0.391794 D.275797 0.39538 2/9/99 0.693 0.59 0.52 0.127393 0,077204 0,1213268 0.324865 0.37526 -0.449361 _ _2/10/99 0.664 0.56 0.498 0.106547 0.075798 0.117808 0.303153 0.391259 0.458655 2/11/99 0.642 0.55 0.482 0.095788 0.079254 0.105734 0.280806 0.417415 0.489444 2/12/99 0.658 0,555 0.494 0.075925 0.093338 0.114534 0.283797 0.425512 0.488664 2113/99 0.604 0,51 0,453 0.078444 0.079169 0.04585 0.203463 0.550854 0.601053 2/14/99� 0.581 0.55 0.438 0.075764 0.072716 0.026238 0.174418 06017850.682876 _2/15/99• 0,626 0.53 0.47 0.166873 0.072195 0,091181 0.270249 0.425002 0.490096 2118199 -0.605 0.525 0.454 0.121371 0.070285 0,89005 1.081705-1.36261 1.08039 -2/17/99 0.62 0.518 0.465 0.123895 0.057773 0.90101 �'1.082678 -1.32834 -1.09011 2/18/89 0.806 0.725 0.605 0.165112 0.139243 0.166319 0.470674 0.222026 0.350794 2/19/99 0,873 0.78 0.681 0208949 6.180833 0.192135 0.561917 0.174865 0.279594 _._ /20/99 8.21 0.72 0.64 0.237631 0.154912 0.183413 0.575956 0.100069 0.200061 2121/99 0.719 0,71 0.539 0.190148 0.10495 0,061586 0.356654 0.338249 0.497828 _21221990.75 0.85 0.583 0.157972 0.088705 0.132263 0.37894 0.326927 0.417015 _ 2/23/99 O,70q 0,64 0.528 0.050717 0:025852 0.058937 0.133506 0.7471481 D.791397 2/24/90 - - 0,676 0.595 0.507 - - - 2/25/99 0,664 0.558 0.498 2/26/99 0.61 0.5280.458 . _.__ ----- --- .�� 0.151113 0.224664 Sheetl Town of Norwood - Outfall Line Date :WWTP (Flow Charted Calculated Anson Turner Aeroquip Total Infiltration Meter Flow Flow Flow Flow Flow Flow 1/9/991 0.471 0.342 0.129 1/10/99! 0.401 0.284 0.117 1/11/99! 0.448 0.331 0.117 1/12/991 0.541 0.322 0.219 1 /13/991 0.429 0.332 0.097 1/14/99 0.482 0.327 0.155 1/15/99 0.918 0.664 0.254 1/16/99 0.588 0.393 0.195 1/17/99 0.629 0.391 0.238 1/18/99 0.984 0.704 0.28 1/19/99 0.678 0.472 0.206 1/20/99 0.621 0.4 0.221 1 /21 /99 0.586 0.337 0.249 1/22/99 0.479 0.335 0.144 1/23/99 1.001 0.846 0.155 1/24/99 1.005 2.489 0 1/25/99 0.977 1.323 0 1/26/99 0.925 0.79 0.135 1/27/99 0.855 0.601 0.254 1/28/99 0.654 0.462 0.192 1/29/99 0.569 0.404 0.165 1/30/99 0.432 0.315 0.117 1/31/99 0.414 0.265 0.149 2/1/99 0.984 0.777 0.207 2/2/99 1.114 1.33 0 2/3/99 1.071 0.881 0.19 2/4/99 0.952 0.698 0.254 2/5/991 0.684 0.526 0.158 2/6/99! 0.603 0.427 0.176 2/7/99j 0.538 1.135 0 2/8/99 1 0.541 . 0.392 0.149 2/9/99! 0.52 0.325 0.195 2/10/99: 0.498 0.303! 0.195 2/11/99€ 0.482 0.2811 0.201 2/12/99 ! 0.494 0.284 'I 0.21 2/13/99 ` 0.453 , 0.203 ` 0.25 2/14/99 0.438 0.174 0.264 2/15/99 0.471 0.27, 0.2 2/16/99 0.454 ; 1.082 0 2/17/99 0.4651 1 1.083 0 2/18/99 0.605; i 0.471 0.134 2/19/99 0.681 ; 1 0.562, 0.119 2/20/99 0.64 , i 0.576 0.064 Sheetl 2/21/991 I 0.539 I 0.357I 0.182 2/22/99 1 0.563j I 0.379 0.184 2/23/99 f 0.5281 0.133 0.395 2/24/99 2/25/99 Total 7.515 2/26/99 'Avg. 0.16337 2/27/99 2/28/99 3/1/99 3/2/99 1 1 1 1 1 1 Variables used in Calculations Town of Norwood Variable Value Units Description QcI 0.53 mgd Current influent flow QdI 0.750 mgd Design influent flow MLVSSab 2100 mg/L Mixed liquor volatile suspended MLVSSdab 2100 mg/L Mixed liquor volatile suspended VOLUMEab 0.375 mg Volume of each aeration basin NUMBERab 2 each Number of aeration basins Current influent BOD5 Design influent BOD5 Mixed liquor suspended solids ir Mixed liquor suspended solids ir SIudge wasted per day to drying Solids concentration out of secor Current effluent suspended solid; Settleability of sludge solids Solids concentration out of secor Current influent suspended solid; Design influent suspended solids Current influent ammonia Design influent ammonia Current influent flow, gal Design influent flow, gal Volume of each aeration basin in Number of secondary clarifiers Volume of secondary clarifier Length of weir on secondary clay Surface area of secondary clarifie Return sludge flow at current flo' Return sludge flow at design floe Current solids concentration of d Design solids concentration of di Number of digesters Volume of aerobic digester Volume of chlorine contact cham Number of chlorine contact chary. Chlorine feed rate Current average solids concentral Depth of sludge placed in the dry Number of sludge drying beds Area of sludge drying beds BODcI 242 mg/L BODdI 220 mg/L MLSSab 2000 mg/L MLSSdab 3000 mg/L SLUDGEwst 1440 gpd SOLIDScI 0.006 0.6% SSce 14 mg/L SETTLE 500 mg/L SOLIDSras 5900 mg/L SScI 510 mg/L SSdI 220 mg/L NH3cI 20 mg/L NH3d1 20 mg/L Qclg 530000 gal Qdlg 750000 gal VOLUMEabcf 50134 ft3 NUMBERc1 2 each VOLUMEccfl 8700 ft3 LENGTHcw1 104 ft AREAcI 855 _ ft2 Qras 0.35 mgd Qdras 0.75 mgd SOLIDScdc 0.02 2.0% SOLIDSdpc 0.025 2.5% NUMBERd 0 each VOLUMEd 0 ft3 VOLUMEccc 1252 ft3 NUMBERccc 1 each CHLORINE 25 lbs/day SOLIDScdb 0.025 2.50% DEPTHdb 0.75 ft NUMBERdb 2 each AREAdb 2000 ft2 solids in aeration basin @ current solids in aeration basin @ design aeration basin ® current aeration basin ® design beds dary clarifier in percent dary clarifier cubic feet ifier r gested sludge vested sludge ber bers ion of sludge placed in drying beds ing beds NORWOOD WWTP SLUDGE PRODUCTION (S) - THEORETICAL QcI = 0.5 mgd Qdl = 0.75 mgd BODcI = 242 mg/L BODdI = 220 mg/L Aeration Sludge Production = (flow,mgd)(influent BOD, mg/I)(8.34)(0.65) ScI = QcI*BODcI*8.34*0.65 ScI = 695 lbs/day @ current Sc = ScI*365/2000 Sc = 126.9 tons/year @ current SdI = QdI*BODdI*8.34*0.65 Shc = 894 lbs/day @ dcsigm Sd= SdI*365/2000 Sd = 163.2 tons/year @ design Page 1 of 10 NORWOOD WWTP 1 1 1 Existing Influent Data QcI = 0.5 mg/L QdI = 0.75 mgd BODcI = 242 mg/L BODdI = 220 mg/L SScI = 510 mg/L SSdI = 220 mg/L NH3cI = 20 mg/L NH3dI = 20 mg/L BOD5 Influent = (Existing influent flow, mgd)(Influent BOD, mg/L)(8.34 lb/gal) BOD5 Influent = QcI*BODcI*8.34 BOD5 Influent = 1070 lbs SS Influent = (Existing influent flow, mgd)(Influent SS, mg/L)(8.34 lb/gal) SS Influent= QcI*SScI*8.34 SS Influent= 2254 lbs NH3N Influent = (Existing influent flow, mgd)(Influent NH3N, mg/L)(8.34 lb/gal) NH3N Influent -= QcI*NH3cI*8.34 NH3N Influent = 88 Ibs Design influent Data BOD5 Influent = BOD5 Influent = (Design flow, mgd)(Design BOD, mg/L)(8.34 Ib/ga1) QdI*BODdI*8.34 BOD5 Influent = 1376 lbs SS Influent = SS Influent = (Design flow, mgd)(Design SS, mg/L)(8.34 lb/gal) QdI*SSdI*8.34 SS Influent = 1376 lbs NH3N Influent = (Design flow, mgd)(Design NH3N, mg/L)(8.34 lb/gal) NH3N Influent = QdI*NH3dI*8.34 NH3N Influent = 125 lbs Page 2 of 10 NORWOOD WNW AERATION BASIN Detention Qclg = 530000 gal NUMBERab = 2 ea Qdlg = 750000 gal VOLUMEab = 0.375 mg Detention = (number of basins)(mg)(24 hr/day)(1000000) Avg Daily F1ow,gpd DETabc = DETabc = DETabd = DETabd = NUMBERab*VOLUMEab*24* 1000000 Qclg 34.0 hrs @ current NUMBERab*VOLUMEab*24* 1000000 Qdlg 24.0 hrs @ design Suggested detention time is 18-36 hours for an oxidation ditch. Page 3 of 10 NORWOOD WWTP Volumetric Loading QcI = BODel = BODdI = 0.5 mgd 242 mg/L 220 mg/L NUMBERab = 2 ea VOLUMEabcf= 50134 ft3 Qdl = 0.75 mgd Volumetric Loading = (Avg Daily flow, mgd)(BOD, mg/I)(8.34) 1000 ft3 of basin QcI*BODcI*8.34 VLabc ((NUMBERab* VOLUMEabcf)/I 000) VLabc = 10.7 Ib BOD5/1000ft3 @ current VLabd = QdI*BODdI*8.34 ((NUMBERab* VOLUMEabcf)/ 1000) VLabd = 13.7 Ib BOD5/1000ft3 @ design Suggested loading is 10 - 25 Ibs BOD5/1000ft3 for extended aeration. Oxygen Requirements see parameters above plus NH3cI = NH3dI = Oxygen Required= 20 mg/L 20 mg/L (1.5 lb 03/1b BOD5)(ADF, gpd)(Aeration BOD5, mg/1)(8.34 Ib/gal) + (4.5 Ib 02/lb NH3N)(ADF, gpd)(Aeration NH3N)(8.34 Ib/gaI) AORabc= AORabc = AORabd= AORabd = 1.5*QcI*BODcI*8.34 +4.5*QcI*NH3cI*8.34 2002 lb 02/day @ current 1.5*QdI*BODd1*8.34 + 4.5*QdI*NH3d1*8.34 2627 Ib 0,/day @ design Page 4 of 10 Aerator hp Required Current 02 Demand AOR abc = 2002 lbs. 02/day = 83.4 Ibs. O2/hr Aerator = 1.5 lbs. O2/hr/hp hp required (current) = 55.6 hp hp available (current) = 60 hp Current conditions for 02 demand is o.k. Mixing Vol=0.75MG hp required = 125 hp/mg hp required (current) = 93.8 hp hp available (current) = 60 hp Current hp for mixing is not sufficient Design Conditions 02 Demand AOR abd = 2627 lbs. 02/day = 109 lbs. O2/hr Aerator = 1.5 lbs. 02/h /hp hp required (design) = 72.7 hp Existing aerators not sufficient for 02 demand Mixing Vol = 0.75 MG hp required = 125 hp/mg hp required (design) = 93.8 hp .'. Mixing controls, provide 4-25 hp floating aerators — 2 per basin NORWOOD WWTP SECONDARY CLARIFIERS Detention Qclg = 530000 gal Qdlg = 750000 gal NUMBERc1= 2 ea VOLUMEccfl = 8700 cubic feet Detention = (cubic feet of clarifier)(7.48 gal/cubic feet)(24 hr/day) ADF, gpd DETcc1= VOLUMEccfl*NUMBERcI*7.48*24 Qclg DETccI= 5.9 hrs @ current DETdc1= VOLUMEccfl*NUMBERc1*24*7.48 Qdlg DETdc1= 4.2 hrs @ design Suggested detention time for secondary clarifiers is 2 to 4 hours. Weir Rate Qclg = 530000 gal LENGTHcwI = 104 ft Qdlg = 750000 gal NUMBERcI = 2 each Weir Rate = ADF, gpd / Length of weir, ft WEIRrc1 = Qclg / LENGTHcwI*NUMBERcI WEIRrc1 = 2548 gpd/lf@ current WEIRrdI = Qdlg / LENGTHcw1*NUMBERcI WEIRrd1= 3606 gpd/1f @ design Suggested weir rate for secondary clarifiers should be less than 10,000 gpd/lf. Page 5 of 10 • NORWOOD WWTP Overflow Rate Qclg = 530000 gal Areacl = 855 ft2 Qdlg = 750000 gal NUMBERc1= Overflow Rate = ADF,gpd / Total Clarifier area, sq ft. OVERFLOWcc1 = QcTg / AREAcI*NUMBERc1 OVERFLOWcc1= 310 gpd / ft2 @ current OVERFLOWcdI = Qdlg / AREAc1*NUMBERcI OVERFLOWcd1= 439 gpd / ft2 @ design 2 ea Suggested overflow rates for secondary clarifiers are 400 to 700 gpd/sq ft. (As per p. 592 Design of Municipal Wastewater Treatment Plants) Average Solids Loading Rate QcI = 0.53 mgd MLSSab = 2000 mg/L Qras = 0.35 mgd MLSSdab = 3000 mg/L Qdi = 0.75 mgd NUMBERc1 = 2 each AREAc1 855 ft2 Qdras = 0.5 mgd ASLR = (ADF,mgd + Recir, mgd)(MLSS,mg/L)(8.34 lb/gal) (Clarifier area, ft2)(24 hr/day) ASLRcl = (QcI+Qras)*MLSSab*8.34 NUMBERc1*AREAc1*24 ASLRc1 = 0.36 lb/ft2/hr @ current ASLRd = (QdI+Qdras)*MLSSdab*8.34 NUMBERcI*AREAc1*24 ASLRd = 0.76 lb/ft2/hr @ design Typical solids loading values for activated sludge vary from 1.25 Ib/ft2/hr for peak conditions to 0.5 lb/ft2/hr for average conditions. Page 6 of 10 ME NM ME Estimated Sludge Production @ current ScI = 695 lb/day from previous calculations Sc1*365= 253784 lb/year Estimated Sludge Production @ design SdI = 894 lb/day from previous calculations SdI*365= 326480 Ib/year Solids Detention = (ft3 digester)(62.4 lb/cu ft) lb solids/day / solids conc SOLIDScpc = 0.02 % ScI = SOLIDSdpc = 0.025 % SdI 695 Ib/day 894 lb/day Suggested aerobic detention time is 30 - 60 days. Calculations below will be based on a detention time of 60 days. (DET = 60) VOLUMEd = VoIume needed to meet required detention time. VOLUMEdc = VOLUMEdc = VOLUMEdd — VOLUMEdc DET*ScI SOLDIDScpc*62.4 33428 ft3 DET*SdI SOLDIDSdpc*62.4 34403 ft3 NORWOOD WWTP Prying Beds ScI = 695 lbs/day AREAdb = 2000 ft2 SdI = 894 lbs/day NUMBERdb = 2 ea SOLIDScdb = 0.025 1.80% DEPTHdb = 0.75 ft SOLIDSdpc = 0.025 2.50% Drying Cycles Required Per Year = (lbs solids/day)(365 days/yr) (% solids)(62.4 lb/ft3)(loading depth, ft)(area, ft2)(# beds) DCc = ScI*365 (SOLIDScdb*62.4*DEPTHdb*AREAdb*NUMBERdb) DCc = 54 cycles/year rr current DCd = SdI*365 SOLIDSdpc *62.4 *DEPTHdb*AREAdb*NUMBERdb DCd = 70 cycles/year @ design The suggested number of cycles for drying beds is 8-12. Additional drying beds are needed. Sludge Disposal / Reuse Sc = 126.9 tons/yr Sd = 163.2 tons/yr Land application of sludge: Assume 5 dry tons/acre/yr Land area required = Tonslyr sludge produced 5 dry tons/acre/yr At current: LANDc= Sc/5 LANDc= 25.4 acres At design: LANDd= Sd/5 LANDd= 32.648 acres Page 9 of 10 NORWOOD WWTP Buffer Requirements: Assume a 100 foot buffer requirement At current: BUFFERc = ((SQRT(LANDc*43560)+200)^2)* 1/43560 - LANDc BUFFERc = 11 acres BUFFERd = ((SQRT(LANDd*43560)+200)^2)* 1/43560 - LANDd BUFFERd = 12 acres Total Estimated Area Needed: At Current: TOTALc = LANDc+BUFFERc TOTALc = 36 acres TOTALd = LANDc+BUFFERd TOTALd = 45 acres Page 10 of 10 APPENDIX C NPDES PERMIT State of North Carolina Department of Environment, Health and Natural Resources Division of Environmental Management James B. Hunt, Jr., Governor Jonathan B. Howes, Secretary A. Preston Howard, Jr., P.E., Director Mr. Ken Thomas P. O. Box 697 Norwood, NC 28128 Dear Mr. Thomas: IF TA 1E)EHN1F1 November 15, 1994 Subject: Permit No. NC0021628 Town ofNorwood WWTP Stanly County In accordance with your application for discharge permit received on April 13, 1994, we are forwarding herewith the subject state - 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 US Environmental Protection agency dated December 6, 1983. 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, Post Office Drawer 27447, Raleigh, North Carolina 27611 -7447. Unless such demand is made, this decision shall be final and binding. Please take notice this permit is not transferable. Part II, E.4. addresses the requirements to be followed in case of change in ownership or control of this discharge. This permit does not affect the legal requirements to obtain other permits which may be required by the Division of Environmental Management or permits required by the Division of Land Resources, Coastal Area Management Act or any other Federal or Local governmental permit that may be required. If you have any questions concerning this permit, please contact Jay Lucas at telephone number 919/733-5083. Sipcerely, • A —A. Preston Howard, Jr. cc: Mr. Jim Patrick, EPA Mooresville Regional Office P.D. Box 29535, Raleigh, North Carolina 27626-0535 Telephone 919-733-7015 FAX 919-733-2496 An Equal Opportunity Affirmative Action Employer 50% recycled/ 10% post -consumer paper Permit No. NC0021628 STATE OF NORTH CAROLINA DEPARTMENT OF ENVIRONMENT, HEALTH, AND NATURAL RESOURCES - DIVISION OF ENVIRONMENTAL MANAGEMENT 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, Town of Norwood is hereby authorized to discharge wastewater from a facility Located at Norwood Wastewater Treatment Plant U.S. Highway 52 south of Norwood Stanly County to receiving waters designated as Rocky River in the YadIain-Pee Dee River Basin in accordance with effluent limitations, monitoring requirements, and other conditions set forth in Parts I, II, and III hereof. This permit shall become effective December 1, 1994 This permit and the authorization to discharge shall expire at midnight on November 30, 1999 Signed this day November 15, 1994 y-A, A. Preston Howard, Jr., P.E., Director Division of Environmental Management By Authority of the Environmental Management Commission Permit No. NC0021628 SUPPLEMENT TO PERMIT COVER SHEET Town of Norwood is hereby authorized to: 1. Continue to operate a 0.75 MGD wastewater treatment facility consisting of a flow splitter box, dual bar screens (one mechanical and one manual), a grit chamber, a parshall flume, a flow recorder with totalizer, dual aeration basins with floating surface aerators, dual secondary clarifiers, a chlorine contact basin with gaseous disinfection facilities, two sludge drying beds and a stand-by power generator located at Norwood Wastewater Treatment Plant, U.S. Highway 52, south of Norwood, Stanly County (See Part III of this Permit), and 2. Discharge from said treatment works at the location specified on the attached map into Rocky River which is classified Class C waters in the Yadkin -Pee Dee River Basin. 904 a 1\ — (11 c--,=0Wr, . r330 Hydroelectric Plant t L_ ccl gigtik 0/ MN MEI MINN MN A. (). EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS FINAL Permit No. NCO 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: Effluent Characteristics Flow BOD, 5 day, 20°C** Total Suspended Residue" NH3 as N Fecal Coliform (geometric mean) Total Residual Chlorine Temperature, °C Total Nitrogen (NO2 + NO3 + TKN) Total Phosphorus Copper Zinc Discharge Limitations Monthly Ava. Weekly Avg. Daily Max 0.75 MGD 30.0 mg/I 45.0 mg/I 30.0 mg/I 45.0 mg/I 200.0 /100 ml 400.0 /100 ml Monitoring Measurement Frequency Continuous Weekly Weekly 2/Month Weekly 2/Week Weekly Quarterly Quarterly Monthly Monthly Requirements Sample Type Recording Composite Composite Composite Grab Grab Grab Composite Composite Composite Composite 'Sample Location lorE E, 1 E, I E E E E E E E E * Sample locations: E - Effluent, 1- Influent ** The monthly average effluent BOD5 and Total Suspended Residue concentrations shall not exceed 15 % of the respective influent value (85 % removal). *** Chronic Toxicity (Ceriodaphnia) P/F at 2.7%; March, June, September, and December; See Part III, Condition E. The pH shall not be less than 6.0 standard units nor greater than 9.0 standard units and shall be monitored weekly at the effluent by grab sample. There shall be no discharge of floating solids or visible foam in other than trace amounts. INN MI Eli A. (). EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS FINAL Permit No. NC002,._ 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. (Continued) Effluent Characteristics Lead Chronic Toxicity"* Discharge Limitations Units (specify) Mon lily Avg. Weekly Avg. t Daily Max Monitoring Measurement Frequency Monthly Quarterly Requirements Sample Type Composite Composite *Sample Location E APPENDIX D MONTHLY FLOW DATA 1 A n Pall ye--;., I Month 'Finished Water Water Sold Water Water Plan 'i er'cent Sold Sewer Sewer Sewer Plant Sewer Pia Pump to Town Day Avg. Capacity Water Peak Flow Avg. Flow Cap. Percent Capacity Jan-94 14436550 10827420 465695 2000000 0.75000052 572000 432000 0.576 750000 FFeb-94 12334850 8790700 440530 2000000 0.71267182 588000 471000 0.628 750000 1 Mar-94 13586180 9512920 438263 2000000 0.700190929 542000 444000 0.592 750000 Apr-94 13418410 10063810 447280 2000000 0.750000186 441000 367000 0.489333333 750000 May-94 13938810 10454110 449639 2000000 0.750000179 412000 342000 0.456 750000 IJun-94 14933790 12820110 497793 2000000 0.858463257 459000 336000 0.448 750000 JuI-94 15150470 11384302 488724 2000000 0.751415765 652000 483000 0.644 750000 Aug-94 14922870 9681469 481382 2000000 0.648767228 615000 564000 0.752 750000 Sep-94 14010490 9780320 467016 2000000 0.698071231 658000 398000 0.530666667 750000 1 Oct-94 12980050 9395990 418711 2000000 0.723879338 557000 353000 0.470666667 750000 Nov-94 12405920 10066944 413530 2000000 0.811462914 536000 345000 0.46 750000 Dec-94 12915880 8127846 416641 2000000 0.629290919 829000 385000 0.513333333 750000 1Jan-95 12406770 8784620 400218 2000000 0.708050524 903000 477000 0.636 750000 Feb-95 11498280 8492079 410652 2000000 0.738552114 596000 472000 0.629333333 750000 Mar-95 12790020 11812011 412581 2000000 0.923533427 631000 465000 0.62 750000 Apr-95 13619110 9848914 453970 2000000 0.723168695 398000 361000 0.481333333 750000 May-95 14607490 12178926 471209 2000000 0.833745291 526000 344000 0.458666667 750000 Jun-95 13928547 12001530 464284 2000000 0.861649819 830000 562000 0.749333333 750000 Jul-95 14024570 11133703 452405 2000000 0.793871256 892000 485000 0.646666667 750000 IAug-95 15615820 13290052 503736 2000000 0.851063345 972000 436000 0.581333333 750000 Sep-95 13474000 10953149 449133 2000000 0.812909975 693000 438000 0.584 750000 Oct-95 13355050 10021310 430808 2000000 0.750376075 1064000 747000 0.996 750000 Nov-95 11695000 9561260 389833 2000000 0.81755109 1047000 739000 0.985333333 750000 1 Dec-95 11860000 8877390 382580 2000000 0.748515177 922000 579000 0.772 750000 Jan-96 12699999 10399080 409677 2000000 0.818825261 1089000 746000 0.994666667 750000 Feb-96 11663000 8655583 416535 2000000 0.742140358 728000 496000 0.661333333 750000 Mar-96 I 11823000 8633337 381387 2000000 0.730215428 1136000 601000 0.801333333 750000 Apr-96 12577000 10446200 419233 2000000 0.830579629 730000 566000 0.754666667 750000 May-96 14753000 12852000 475903 2000000 0.871144852 658000 461000 0.614666667 750000 }Jun-96 15200000 12978190 506666 2000000 0.853828289 577000 384000 0.512 750000 I JuI-96 16398000 13305820 528967 2000000 0.811429443 553000 368000 0.490666667 750000 Aug-96 15809000 14613699 509967 2000000 0.924391106 718000 414000 0.552 750000 Sep-96 16220000 13261796 540666 2000000 0.817619975 915000 549000 0.732 750000 1 Oct-96 13171000 13261796 424870 2000000 1.00689363 1043000 529000 0.705333333 750000 Nov-96 11739000 9668862 391300 2000000 0.823652952 655000 460000 0.613333333 750000 Dec-96 12261000 10265568 395516 2000000 0.837253731 800000 555000 0.74 750000 Jan-97 11574000 10191354 373354 2000000 0.880538621 972000 560000 0.746666667 750000 1 Feb-97 10203000 10330266 364392 2000000 1.01247339 822000 555000 0.74 750000 Mar-97 12572000 9631634 405548 2000000 0.766117881 828000 581000 0.774666667 750000 Apr-97 May-97 12010000 11346976 400333 2000000 0.944794005 967000 572000 0.762666667 750000 13699000 12977601 441903 2000000 0.947339295 789000 506000 0.674666667 750000 Jun-97 14199000 12669820 473300 2000000 0.892303683 509000 403000 0.537333333 750000 JuI-97 15375000 13047169 495967 2000000 0.848596358 951000 437000 0.582666667 750000 Aug-97 15083000 13571670 486548 2000000 0.899799112 622000 408000 0.544 750000 Sep-97 14337000 11939850 477900 2000000 0.832799749 585000 416000 0.554666667 750000 Oct-97 13627000 12554000 439580 2000000 0.921259265 780000 444000 0.592 750000 Nov-97 12088000 9531560 402933 2000000 0.788514229 814000 611000 0.814666667 750000 I Dec-97 IJan-98 12539000 12324265 404483 2000000 0.982874631 853000 647000 0.862666667 750000 12227000 8913470 394419 2000000 0.728998937 850000 692000 0.922666667 750000 Feb-98 11084000 9121585 395857 2000000 0.82295065 1253000 740000 0.986666667 750000 IMar-98 11895000 9960190 396500 2000000 0.837342581 1472000 773000 1.030666667 750000 Apr-98 12819000 11685960 427300 2000000 0.91161245 1089000 705000 0.94 750000 Vlay-98 13675000 12023219 441129 2000000 0.879211627 1168000 640000 0.853333333 750000 Jun-98 14932000 14174581 497733 2000000 0.949275449 526000 373000 0.497333333 750000 JuI-98 15249000 14021136 491903 2000000 0.919479048 610000 381000 - 0.508 750000 Aug-98 15088000 13865689 583484 2000000 0.918987871 372000 331000 0.441333333 750000 Sep-98 14084000 11669040 469467 2000000 0.828531667 487000 383000 0.510666667 750000 L Oct-98 13868000 11320930 377364 2000000 0.816334727 723000 363000 0.484 750000 ;Nov-98 11998000 9910630 330354 2000000 0.826023504 701000 427000 0.569333333 750000 Dec-98 12193000 11364070 393323 2000000 0.932015911 1213000 567000 0.756 750000 Jan-99 11637000 8597860 375387 2000000 0.738838189 1236000 720000 0.96 750000 APPENDIX E CLIMATE DATA SCO AgNet: SALI Page 1 of 1 1 1 e 1 March 1999 Piedmont Research Station, Salisbury Weather & Climate Network Date Air Max (°F) Air Min (°F) Total Rain (inch) Soil Max (°F) Soil Min (°F) Ave RH (%) Ave Wind (mis) Max Wind (Pm Ave Wind (deg) Total Solar (MJlm2) Ave Baro (mb) PAR 2 (day) day) ID 3 1 56.1 30.6 0.00 45.6 38.7 59 2.0 5.6 268 [13.1 1006 24.8 618 3 2 67.3 24.0 0.00 46.9 36.4 61 1.4 5.4 183 15.3 1012 28.8 618 61.6 36.4 0.33 45.3 40.0 73 3.7 10.8 223 2.4 1004 4.9 618 3 4 49.8 27.9 0.00 43.6 36.5 51 2.3 5.8 [268 15.9 1015 29.5 618 3 5 54.8 22.0 0.00 44.0 35.6 64 1.1 5.3 185 13.7 1024 25.9 1618 3 6 68.5 41.9 0.01 49.6 39.1 72 3.3 8.1 238 14.2 1017 27.6 .618 3 7 49.2 31.9 0.00 46.5 38.9 43 3.5 9.5 1132 16.4 1025 30.6 :618 3 8 44.7 17.5 0.00 43.5 35.5 48 1.0 ;4.2 110 12.0 1030 22.3 618 3 9 38.4 29.5 0.20 40.4 36.9 83 1.1 :3.2 102 12.2 1019 4.7 618 3 10 52.4 30.1 0.01 43.8 35.8 79 1.9 7.1 254 12.1 1012 23.2 618 3 11 53.7 25.8 0.00 44.5 35.7 54 2.3 5.9 220 16.6 1015 31.2 618 312 58.4 29.1 0.00 45.4 35.7 38 2.5 7.5 131 17.0 1017 31.3 1618 3 13 42.4 30.1 0.06 39.9 36.3 67 1.1 4.8 1124 4.0 1020 8.1 618 3 14 39.4 34.8 0.34 39.2 37.2 100 3.0 7.1 53 1.0 1009 2.4 618 3 15 53.2 30.5 0.03 45.7 37.4 79 2.5 7.3 156 12.2 1008 23.5 618 3 16 63.8 24.7 0.00 46.7 35.7 66 1.8 6.9 229 16.9 1018 32.3 618 317;78.5 31.1 0.00 51.8 37.3 55 1.7 5.4 233 16.8 1016 31.7 618 3 18 78.8 38.4 0.00 55.5 41.8 50 2.0 6.1 264 17.0 1014 32.7 618 3 19 65.3 34.2 0.00 53.9 42.5 57 1.1 4.5 151 14.8 1020 27.7 618 3 20 66.2 34.1 0.00 55.0 41.8 61 1.4 5.1 112 17.3 1021 32.9 1 618 3 21 56.0 43.7 0.59 50.3 45.4 96 1.7 4.5 163 3.0 1010 6.2 618 3 22 60.9 35.0 0.00 52.1 40.6 54 ® 4.8 261 17.6 1015 32.9 618 3 23 70.2 31.5 0.00 53.8 40.8 69 1.5 7.8 166 17.3 1018 32.6 618 1 http:l/www.nc-climate.ncsu.edu/sco/agnet/sali/SALI0399.h.tml 3/24/99 SCO AgNet: SALI Page 1 of 1 Febuary 1999 Piedmont Research Station, Salisbury NCARS Weather & Climate Network Date Air Max °F ( ) ; Air Min (°F),inch Total I Rain (inch) Soil Max (°F)(°F)% Soil Min Ave RH ( ) Ave Wind speed (m/s) Max Wind speed (m/s) Ave Wind Dir (deg) Total Solar 2 (MJ/m) AVe Baro (mh) PAR (mole/m 2 day) ID 2 1 36.8 31.4 ' 0.63 40.4 37.5 96 2.7 5.2 56 1.4 +1026 3.1 6181 2 2 48.1 35.3 t0.03 45.0 38.2 99 1.1 5.2 185 3.1 1014 6.1 618 2 3 59.7 32.7 0.01 50.5 '39.4 91 1.2 4.8 190 9.5 1015 17.5 r618 2 4 66.3 36.2 0.00 51.7 42.3 69 2.7 7 6 263 9.4 f 1015 17.5 618 2 5 64.3 26.7 1 . 36.9 60 0.7 3.0 198 10.2 1023 18.7 618 2 6 70.3 35.7 0.00 5Q.3 66 1.3 5.7 244 8.1 1017 16.1 618 2 7 72.8 40.8 0.00 53.2 83 3.1 10.8 211 6.6 1010 13.0 618 2 8 63.4 37.3 0.00 52.1 43.3 62 1.7 5.4 135 10.5 1014 19.6 618 2 9 63.8 30.9 0.08 50.0 39.7 90 0.9 4.9 176 7.3 1019 14.3 618 2 10 70.9 39.6 0.00 53.5 42.5 74 0.6 3.0 141 10.4 1020 19.7 618 211 72.1 35.6 0.00 53.1 41.6 83 1.3 5.9 177 9.6 1022 19.0 618 2 12 73.6 31.1 0.05 57.4 44.0 85 3.7 12.0 241 6.5 1016 12.9 618 146.7 41.2 24.5 0.00 45.2 37.1 63 2.4 8.2 235 10.3 1021 19.4 618 2 14 15.4 0.00 39.7 33.7 59 1.0 3.8 2I0 11.9 1026 21.9 618 215 59.6 19.7 0.00 41.3 33.5 60 1.2 5.7 221 11.2 1024 21.2 618 2 16 66.1 26.2 0.00 44.5 57 1.5 5.6 232 11.4 1019 21.1 618 217 61.8 41.4 0.11 46.9 39.4 86 1.6 4.8 207 3.0 1013 6.2 618 2 18 60.9 40.5 0.40 52.2 44.5 91 1.2 4.3 113 7.4 1010 14.3 618 219 45.7 32.0 0.50 45.6 36.8 99 2.6 6.2 67 1.1 1010 2.3 618 2 20 55.0 30.1 0.30 45.0 35.3 78 1.0 4.5 219 12.8 1014 24.1 618 2 21 42.4 27.3 0.00 42.3 36.7 y60 3.3 7.4 107 9.5 1017 18.3 618 2 22 19.9 0.00 37.3 34.8 52 2.0 6.6 152 13.8 1022 25.3 618 2 23 33.1 19.7 0.00 35.7 34.3 74 1.2 4.1 80 5.1 1026 ;9.8 618 2 24 38.6 23.4 0.06 36.1 34.0 89 90 1.3 1.2 4.6 119 9.9 1024 19.0 618 2 25 46.5 22.9 0.00 38.2 33.8 6.1 207 5.2 1019 10.0 618 2 26 56.2 25.0 0.00 42.3 34.0 68 1.0 4.8 142 14.1 1019 26.1 618 2 27 68.8 30.4 0.00 47.5 35.3 80 1.9 18.1 191 11.6 1015 22.2 618 2 28 63.1 43.8 0.01 50.8 43.0 72 3.5 6.7 261 8.3 1003 15.6 618 http://www.nc-climate.ncsu.edu/sco/agnet/sali/SALI0299.html 3/24/99 SCO AgNet: SALT Page 1 of 1 January 1999 Piedmont Research Station, Salisbury NCARS Weather & Climate Network Date 1 1 Air Max (°F) 47.5 Air Min (°F) .18.9 Total Rain (inch) 0.00 Soil Max (°F) 41.2 Soil Min (°F) 35.2 Ave RI-{ (%) Ave Wind need speed Max Wind speed (mis) 5.0 Ave Wind Dir (deg 80 Total Solar 2 (MJ/in ) 7.9 Ave Bar° (mb) 1023 PAR (mole/m2 day) 14.9 ID 618 72 1.6 1 2 32.8 27.6 0.01 - 38.1 34.6 177 2.7 6.3 68 1.1 1021 2.2 618 1 3 36.2 28.2 0.88. 38.9 34.5 '98 1.1 4.8 261 2.8 1010 5.6 618 1 4 32.0 18.8 0.00 37.1 34.5 67 1.2 4.8 269 8.1 1021 14.7 618 1 5 30.0 11.9 0.00 35.0 32.9 71 0.8 4.6 184 8.4 1026 15.1 618 1 6 43.1 11.8 0.00 33.5 31.7 172 2.2 6.6 228 7.7 1024 14.3 618 1 7 58.0 33.9 0.00 39.5 31.9 74 1.5 4.9 210 8.1 1023 15.3 618 1 8 48.2 34.0 0.18 41.6 35.8 98 I 0.8 3.1 106 2.3 1022 4.7 618 1 9 55.1 29.3 0.01 44.4 38.4 88 2.0 8.1 215 1.8 1012 3.6 618 1 10 39.7 20.2 0.00 38.8 35.4 58 2.1 4.9 159 8.4 1020 15.3 618 1 11 50.8 -2.1.9 0.00 39.0 34.4 !61 1.8 5.6 233 -18.1 1022 15.2 618 1 12 61.1 38.9 0.00 43.8 36.1 57 , 3.1 7.3 231 8.4 1020 15.7 618 1 13 61.6 31.9 0.00 44.6 36.7 73 2.2 16.7 ,226 6.0 1020 11.5 618 1 14 69.0 43.3 0.08 50.1 41.5 '86 1.6 5.8 163 6.1 1019 12.0 618 1 15 51.3 27.1 0.33 47.7 40.1 71 1.8 6.6 237 8.6 1015 15.6 618 1 16 60.4 23.5 0.00 43.5 37.5 70 1.7 7.4 205 I8.5 1019 15.8 618 1 17 60.7 27.3 0.27 44.5 36.5 83 0.6 3.3 190 5.7 1020 11.1 618 1 18 64.2 35.4 0.23 49.5 41.9 77 1.9 7.3 221 5.9 1013 11.2 618 1 19 61.1 28.4 0.00 46.1 38.1 61 1.1 3.8 238 8.4 1019 15.9 618 1 20 65.9 32.9 0.00 48.0 38.5 77 0.7 3.4 177 8.2 1017 15.6 618 1 21 55.9 35.4 0.00 47.8 40.4 94 0.5 2.1 163 4.0 1017 7.9 M 618 1 22 71.0 43.9 0.00 53.4 43.9 96 1.0 4.7 171 4.9 1019 9.8 1 23 71.4 57.3 1.21, 57.4 49.4 98 2.7 7.9 176 3.3 1016 6.8 618 1 24 61.9 37.1 0.78 56.8 46.0 84 2.1 6.3 182 5.7 1015 10.3 618 1 25 66.7 30.1 0.00 51.7 40.4 73 1.4 5.0 193 8.5 1022 15.8 6181 1 26 54.3 33.6 0.00 49.5 40.2 78 1.3 4.6 142 8.6 1028 16.2 618 MN 70.5 29.3 0.00 51.6 37.8 85 2.0 6.9 183 8.3 1021 15.7 618 1 28 76.2 39.4 0.00 54.3 41.7 79 1.3 4.6 225 8.7 1018 16.8 618: 1 29 68.3 41.9 0.00 55.3 44.2 79 1.1 4.6 116 7.4 1022 14.3 618: 1 30 56.7 41.4 0.01 53.1 46.8 84 1.0 3.6 103 6.2 1027 12.0 618 1 31 44.3 35.5 0.00 47.3 39.8 66 3.4 7.1 67 3.8 1033 6181 http://www.ne-climate.hosu.edu/seo/agnet/sali/SALI0199.html 3/24/99 SCO AgNet: SALI Page 1 of 2 December 1998 Piedmont Research Station, Salisbury NCARS Weather & Climate Network Date Air Max (°F} � Air Min (°F} Total Rain (inch) Soil Max (°F) Soil Min (°F) Ave RH (%) Ave Wind speed (m/s) Max Wind speed (m/s) Ave Wind Dir (deg) Total Solar(mole/m2 Jlm2 ) Ave Barom (nib) PAR day) ; ID 12 1 72.7 3 8.7 0.00 59.5 49.9 73 1.2 6.7 194 8.0 1022 15.0 618 12 2 69.7 29.2 0.00 56.2 46.3 74 } 0.7 4.8 206 8.1 1023 + 14.9 618 12 3 73.3 35.4 0.00 58.1 47.1 82 1.0 4.0 246 7.2 1019 13.7 '618 12 4 76.1 39.0 0.00 59.2 48.5 82 0.8 3.6 237 7.3 1020 13.9 618 12 5 73.8 40.6 }46.9 0.00 59.4 '49.6 90 1.4 6.8 220 4.5 1019 9.1 618 12 6 78.6 0.00 63.0 52.8 88 1.7 5.7 235 7.3 1017 14.2 618 12 7 78.1 57.1 0.00 64.5 55.4 88 3.1 8.7 229 7.5 1017 14.9 618 12 8 78.3 58.3 0.17 65.4 56.8 91 3.1 9.0 212 6.0 1016 12.1 618 12 9 59.5 37.1 0.03 61.8 51.8 82 2.3 7.7 79 8.1 1022 14.9 618 12 IO 56.8 28.5 0.00 54.4 45.9 84 0.4 2.3 153 8.0 1026 14.8 618 12 11 54.5 42.1 0.00 52.9 49.2 48.1 59 71 1.7 4.9 80 4.5 3.I 1025 1026 8.7 618 618 50.6 38.5 0.27 52.6 1.7 4.5 68 6.1 46.2 38.1 0.89 49.2 46.6 100 1.9 4.5 67 1.5 1015 3.2 618 12 14 52.3 28.8 0.00 51.2 43.7 78 2.4 6.6 51 8.0 1020 I4.6 618 12 IS 44.7 24.8 0.38 44.0 39.9 80 1.5 4.7 93 3.5 1024 6.9 618 I6 62.9 34.3 0.16 50.4 42.0 66 1.4 4.4 237 8.2 1015 14.7 618 17 49.8 30.5 0.00 46.4 40.6 69 1.7 5.9 259 5.5 - 1013 10.1 618 12 18 48.9 21.8 0.00 44.5 37.9 68 1.2 4.9 204 r 7.9 1023 14.7 618, 12 19 53.0 35.5 0.05 47.0 40.1 81 0.8 3.0 155 4.1 1025 8.1 618 12 20 61.4 38.6 0.00 52.5 44.2 97 0.4 2.9 172 5.5 1025 10.5 618 12 21 66.5 47.4 0.00 56.0 47.7 96 Q.9 3.8 171 5.4 1023 10.6 618 12 22 67.0 34.8 0.00 56.8 46.4 70 3.9 8.2 175 5.2 1020 9.8 618 2? 35.1 28.4 0.09 46.9 39.9 76 1.5 5.2 48 1.3 1028 2.8 618 http://www.nc-climate.ncsu.edulsco/agnet/sali/SALI1298.html 3/24/99 SCO AgNet: SALT Page 2 of 2 12 24 33.5 28.6 0.71 41.1 39.0 100 0.0 1 1 51 1.1 1025 2.5 618 12 2s 33.5 26.3 0.16 41.4 37.7 95 0.0 1 1 60 5.0 1028 10.9 618 26 40.5 24.6 0.08 41.4 36.4 95 0.2 2.0 143 5.7 1023 10.4 618 12 27 45.8 19.9 0.00 41.7 35.7 90 , 0.5 3.2 102 7.3 1024 13.6 618 12 28 47.9 24.9 0.01 42.8 36.4 90 0.6 3.0 211 5.6 1018 10.5 618 12 29 41.8 i 37 .3 0.01 42.7 40.6 99 1.3 3.6 160 1.2 1010 2.3 618 12 30 42.3 24.8 0.00 42.4 37.8 62 2.2 7.8 237 8.4 1013 14.9 618 12 31 45.8 24.5 0.00 41.8 36.6 63 1.0 4.7 158 7.3 1019 13.1 618 http://www.nc-climate.ncsu.edu/sco/agnet/sali/SALI1298.html 3/24/99 SCO AgNet: SALI Page 1 of 2 November 1998 Piedmont Research Station, Salisbury CAfl:S Weather & Cliinate Network Date Air Max (°F) t72.9 Air Min (°F) Total Rain (inch) Soil Max (°F) Soil Min (°F) }56.9 Ave RH (%) Ave Wind (m/s) Max Wind (m/s) Ave Wind (deg) r Total Solar �/m2) Ave Baro (nib) PAR 2 mole/m ( day) ID 11 1 42.4 0.00 64.9 74 0.5 3.2 113 8.0 1016 15.6 618 112 67.5 43.6 0.02 64.3 56.6 82 0.8 2.9 t77 5.3 1015 10.4 618 113 56.0 45.8 0.17 61.8 56.0 99 2.4 .4.2 48 1.3 1012 2.5 618 114 51.9 43.5 0.00 58.3 55.0 96 1.9 3.8 54 3.1 1012 6.0 618 11 5 52.7 40.9 0.00 57.8 53.0 78 2.2 5.2 54 8.8 1014 16.6 618 11 6 52.3 30.4 0.00 57.0 50.1 63 2.1 6.3 128 8.3 1018 15.5 618 11 7 55.0 24.2 0.00 54.4 145.8 78 0.4 4.2 }4.7 139 7.9 1026 14.9 618 11 8 51.4 29.0 0.00 53.3 47.2 88 0.7 175 3.4 1024 .6.7 618 11 9 60.5447.4 0.00 59.3 51.8 93 0.8 3.1 168 4.8 1023 19.2 618 11 10 74.2 -71.0 53.1 0.05 63.6 55.9 90 2.5 8.5 192 4.7 1020 9.2 618 11 11 t38.2 0.12 65.3 55.0 80 1.7 10.2 236 5.7 1020 10.9 618 11 t 12 62.6 32.4 0.00 57.7 49.5 70 0.8 4.6 104 8.0 1026 14.9 618 11 13 62.3 40.5 0.01 58.4 52.2 80 0.7 3.8 187 5.4 1023 10.4 618 11 14 57.8 44.9 0.54 58.0 53.0 97 1.7 5.5 214 3.3 1016 6.7 618 11 15 71.6 43.8 0.00 63.7 55.1 86 0.8 3.3 232 7.8 1012 14.7 618 11 16 62.6 38.1 0.27 58.4 51.3 97 0.6 3.9 168 4.3 1013 8.6 618 11 17 71.2 49.9 0.00 63.9 55.5 76 1.2 3.8 209 7.9 . 1014 14.8 618 11 18 61.2 35.9 0.00 58.2 50.6 80 0.9 5.8 75 7.6 1024 14.3 618 11 t + =� 19 66.5 34.5 0.00 59.3 49.9 88 0.6 3.1 161 7.3 1021 13.9 618 11 20 68.8 52.0 0.00 62.5 56.1 85 2.3 5.9 236 6.0 1015 11.5 618 121 56.6 37.7 0.00 58.7 51.3 62 1.2 4.9 169 7.5 1022 13.8 618 22 59.3 26.2 0.00 55.0 46.5 79 0.5 3.1 162 8.1 1027 14.9 618 11 23 70.9 27.6 0.00 56.1 44.8 84 1.5 5.6 221 7.2 1023 14.1 618 http://www.nc-climate.ncsu.edu/sco/agnet/sali/SALT 1198.html 3/24/99 SCO AgNet: SALT Page 2 of 2 11 24 72.1 .30.00 61.1 51.6 78 1.1 5.4 138 8.0 1019 15.3 618 11 25 57.1 34.4 0.06 54.6 .49.7 81 0.6 2.3 140 2.8 1019 5.6 618 11 26 67.2 39.7 0.09 55.9 49.2 68 1.4 5.0 251 7.7 1015 14.4 618 11 27 69.7 32.8 0.00 55.3 46.3 69 0.9 3.7 245 8.0 1018 15.1 618 11 28 71.9 30.8 0.00 55.8 45.4 75 0.7 4.3 229 8.2 1021 15.4 618 11 29 73.7 31.5 0.00 56.7 45.6 76 0.9 5.7 212 8.1 1021 15.2 618 11 30 72.8 36.1 0.00 58.6 '47.3 84 1.7 7.3 224 8.0 1021 15.2 618 http://www.nc-climate.ncsu.edu/sco/agnet/sali/SALI1198.html 3/24/99 od V 3 -z, GAF C4 1751-1 nfcC� r� n IZ,GIr; 61-1 0 1411E17 46_•1Lo1-1 n -7L1JF V 4�©E-i (14ed Are, ` P_ !2 1 N Col y p ,P2625— I J th a>z +.1..FW-fore rx.0 Honorable Darrell Almond Town of Norwood. Post Office Box 697 Norwood, North Carolina 2 Dear Mayor Almond: NORTH CAROLINA DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES April 23, 28-0697 SUBJECT: DIVISION OF WATER QUALITY 999 Town. of Norwood Wastewater Treatment Improvements And Outfall Replacement Preliminary Engineering Report The Construction Grants & Loans Section has completed its review of the subject Preliminary Engineering Report and has the attached comments. Responses to these comments should be submitted for our review and approval as soon as possible.. If you have any questions conceming this matter, please contact Mr. Cecil G. adden, Jr., P.E. at (919) 715-6203, Sincerely, T. Allen Wahab, P.E., Assistant Chief for Engineering Branch CGM:pe Attach' ent (a cc: Dwight Smith, Town Administrator Koonce, Noble and Associates Mooresville Regional Office Allen Wahab DMU/FEUISRG CONSTRUCTION GRANT* & LOANN SECTION Pp, Box 29579, RALEIGH, NORTH CAROLINA 27626.0579 PHONE 919-733-6900 FAX 91 9.715-6229 AN EQUAL OPPORTUNITY / AFFIRMATIVE" ACTION EMPLOYER - 50% RECYCLED/10% POST•CONSUMER PAPER Review Comments for Town of Norwood Preliminary Engineering Report Wastewater Treatment Plant Upgrade And Outfall Line Replacement April 23,1999 1. An environmental assessment (EA) must be included as a part of the PER. Attached is a typical outline of what is covered in an EA. The project appears to meet minimum criteria; therefore, only 4 copies will be required. 2. It appears that excessive infiltration is being addressed by replacing the 18 inch outfall. Advise how excessive inflow is being addressed. 3. A detailed sludge management plan will be required during the review of plans and specifications. As a part of the PER, advise how the facility will comply with the 40 CFR Part 503 sludge regulations. Provide supporting calculations. Regulations require a minimum of 30 days of sludge storage over and above the volume required for stabilization. We would suggest providing 60 days of sludge storage. This could be accomplished by increasing the digester size. 4. Typically we expect to accomplish no more than eight cycles per year on the sludge drying beds. The PER does not indicate the amount of additional beds required or provide a basis for the cost estimate used in that line item. Sludge drying beds are labor intensive. Confirm the town is committed to this method of handling sludge disposal/reuse. 5. Aeration calculations were provided for the aeration basin but omitted for the digester. Environmental Assessment (EA) An EA must be included as a separate section of the PER. Contact the Army Corps of Engineers regarding 404 permit requirements if necessary. An environmental assessment is a concise but accurate document which describes the following items: 1. Existing Environment - Describe in concise terms the demographics, topography, land use, soils, geology, surface waters, and groundwater in the project area. 2. Need - Describe the need for the proposed project. 3. Alternative Analysis - Discuss alternatives to the proposed action including the alternative of doing nothing to meet the need. 4. Environmental Consequences - State clearly but concisely the environmental impacts of the selected alternative on the project service area. Impacts to be addressed should include at least a brief discussion of the following categories: a) Changes in land use b) Wetlands and floodplains c) Prime or unique agricultural Lands d) Public lands such as parks (state, federal, or Iocal) e) Scenic and recreational areas f) Areas of archeological or historical value g) Air quality h) Groundwater quality i) Nuisance conditions (i.e., odor, noise, etc.) j) Water supplies k) Shellfish or fish and their habitats 1) Wildlife and their habitats (identify any threatened or endangered species) m) Introduction of toxic or hazardous substances n) Receiving waters o) Indirect or secondary impacts 5. Mitigative Measures - Describe methods proposed to mitigate or avoid significant adverse environmental impacts. 6. Map - Provide a reproducible 8 V2" x 11" site location map showing the site of the proposed project, and any significant features such as wetlands, parks, historic sites, etc.