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HomeMy WebLinkAboutWQ0000798_Final Permit_20051121�p W A r, R Michael F. Easley, Governor 0 G William G. Ross Jr., Secretary rNorth Carolina Department of Environment and Natural Resources p Alan W. Klimek, P.E. Director November 21, 2005 GERALD L. LONG, MAYOR TOWN OF SHALLOTTE PO Box 2287 SHALLOTTE, NORTH CAROLINA 28459 Dear Honorable Mayor Long: Division of Water Quality Subject: Permit No. WQ0000798 Town of Shallotte WWTP Wastewater Treatment and Surface Irrigation Brunswick County In accordance with your modification request received February 4, 2005, we are forwarding herewith Permit No. WQ0000798, dated November 21, 2005, to the Town of Shallotte for the continued operation of the subject wastewater treatment and surface irrigation facilities. This permit approves the request to plant longleaf pines instead of hardwoods on fields 6, 7, 8, 10, 11, 12, and 13. Conditional approval was granted by letter dated March 14, 2005 from Tim Bushardt, Y.E. of the Wilmington Regional Office to begin planting of the longleaf pines due to time constraints for purchasing and planting. Please pay particular attention to Condition 11. 1, Condition H.2, and Condition 11.3. The Division of Water Quality (Division) still has serious concerns about the lack of operational flexibility and efficiency that is currently incorporated into the design of the facilities. Therefore, the Division urges the Permittee to look critically at the operation of the wastewater treatment and spray irrigation facilities and consider a permit modification to upgrade the pumping capabilities of the irrigation system. The Permittee is also urged to consider additional irrigation capacity to reduce the number of consecutive hours that must be accommodated by the Permittee's staff in order to operate and maintain the facilities properly. This permit shall be effective from the date of issuance until October 31, 2010, shall void Permit No. WQ0000798 issued August 6, 2001, and shall be subject to the conditions and limitations as specified therein. Please pay particular attention to the monitoring requirements in this permit. Failure to establish an adequate system for collecting and maintaining the required operational information will result in future compliance problems. If any parts, requirements, or limitations contained in this permit are unacceptable, you have the right to request an adjudicatory hearing upon written request within thirty (30) days following receipt of this permit. This request must be in the form of a written petition, conforming to Chapter 150E of the North Carolina General Statutes, and filed with the Office of Administrative Hearings, 6714 Mail Service Center, Raleigh, NC 27699-6714. Unless such demands are made this permit shall be final and binding. ft Mr Carolina Aaturally Aquifer Protection Section 1636 Mail Service Center Raleigh, NC 27699-1636 Phone (919) 733-3221 Customer Service Internet: h2o.enr.statc,nc.us 2728 Capital Boulevard Raleigh, NC 27604 FAX (919) 715-6048 1-877-623-6748 An Equal Opportunity/Affirmative Action Employer — 50% Recycled/iO% Post Consumer Paper One set of approved plans and specifications is being forwarded to you. if you need additional information concerning this matter, please contact Toni Wyche at (919) 715-6188 %Since/re, e // Alan W. Klimek, P.E. cc: Brunswick County Health Department Wilmington Regional Office, Aquifer Protection Section David B. Bowman, PE of East Coast Engineering Technical Assistance and Certification Unit APS Central Files LAU Files 2 NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES RALEIGH SURFACE IRRIGATION SYSTEM PERMIT In accordance with the provisions of Article 21 of Chapter 143, General Statutes of North Carolina as amended, and other applicable Laws, Rules, and Regulations PERMISSION IS HEREBY GRANTED TO Town of Shallotte Bnlnswick County FOR THE continued operation of a 500,000 gallon per day wastewater treatment and spray irrigation facilities. The facilities are divided into two separate and distinct treatment and disposal process trains paths that shall be known by the identifiers WQ0000798-A (i.e., the "Original" system) and WQ0000798-B (i.e., the "Phase I" Expansion" systems), respectively, for the purpose of permit compliance. The WQ0000798-A wastewater treatment and spray irrigation facilities shall treat and dispose of a maximum of 175,000 gallons per day of wastewater and shall consist of the following minimum components: an ultrasonic -type flow metering device to measure all wastewater that is influent to the facilities; two stair step -type cascade influent paths to dual, 2.75 -acre facultative lagoons with a natural clay liner and reserve storage capacity; dual manually -cleaned coarse screens; a manually -cleaned fine - mesh screen for wastewater effluent screening; chlorination facilities; a mechanical float -type flow metering device to measure all wastewater effluent; an irrigation pump station with two, 400 -gallon per minute pumps; a solid -set spray irrigation field that has approximately 40.8 acres of wetted area (i.e., including 14.8 acres currently being irrigated from the WQ0000798-A facilities as well as 26.0 acres currently being irrigated from the WQ0000798-B facilities that shall be modified such that they will be irrigated from the WQ0000798-A facilities; and all associated piping, valves, electrical and instrumental/control systems, and other appurtenances necessary to make a complete and functional wastewater treatment and spray irrigation operation. The WQ0000798-B wastewater treatment and spray irrigation facilities shall treat and dispose of a maximum of 325,000 gallons per day of wastewater and shall consist of the following minimum components: approximately 7,400 linear feet of eight -inch force main to convey influent wastewater to the facilities; an ultrasonic -type flow metering device to measure all wastewater that is influent to the facilities; an influent bar screen; an 11.6 -acre treatment and storage lagoon with a 40 -mil high-density polyethylene (HDPE) liner; a trash screen for wastewater effluent screening; a gaseous chlorine feed system and chlorine contact basin for wastewater effluent disinfection; an irrigation pump station with two, 820 -gallon per minute vertical turbine pumps and in-line strainers; an ultrasonic -type flow metering device to measure all wastewater effluent; a solid -set spray irrigation field that has approximately 93.4 acres of wetted area (i.e., including 39.0 acres that are currently being irrigated from the WQ0000798-B facilities as well as 54.4 acres that are new); and all associated piping, valves, electrical and instrumental/control systems, and other appurtenances necessary to make a complete and functional wastewater treatment and spray irrigation operation. The above-described existing and new wastewater treatment and spray irrigation facilities are intended to serve the Town of Shallotte and its wastewater customers with no discharge of wastes to surface waters, pursuant to the permit modification application package received on February 4, 2005, and subsequent additional information received by the Division, and in conformity with the project plan, specifications, and other supporting data subsequently filed and approved by the Department of Environment and Natural Resources and considered a part of this permit. This permit shall be effective from the date of issuance until October 31, 2010, shall void Permit No. WQ0000798 issued August 6, 2001, and shall be subject to the following specified conditions and limitations: I. PERFORMANCE STANDARDS Upon completion of construction and prior to operation of this permitted facility, a certification must be received from a professional engineer certifying that the permitted facility has been installed in accordance with this permit, the approved plans and specifications, and other supporting materials. If this project is to be completed in phases and partialI certified, you shad retain the responsibility to track further construction approved under the same permit, and shall provide a final certificate of completion once the entire project has been completed. Mail the Certification to the Land Application Unit, Division of Water Quality, 1636 Mail Service Center, Raleigh, NC 27699-1636. 2. The Wilmington Regional Office, telephone number (910) 796-7215, shall be notified at least forty- eight (48) hours in advance of operation of the installed facilities so that an in-place inspection can be made. Such notification to the regional supervisor shall be made during the normal office hours from 8:00 a.m. until 5:00 p.m. on Monday through Friday, excluding State Holidays. The surface irrigation facilities shall be effectively maintained and operated at all times so that there is no discharge to the surface waters, nor any contamination of ground waters, which will render them unsatisfactory for normal use. In the event that the facilities fail to perform satisfactorily, including the creation of nuisance conditions or failure of the irrigation area to adequately assimilate the wastewater, the Permittee shall take immediate corrective actions including those actions that may be required by the Division of Water Quality, such as the construction of additional or replacement wastewater treatment and disposal facilities. 4. The issuance of this permit shall not relieve the Permittee of the responsibility for damages to surface or groundwaters resulting from the operation of this facility. 5. The residuals generated from these treatment facilities must be disposed in accordance with General Statute 143-215.1 and in a manner approved by the Division. 6. Diversion or bypassing of the untreated wastewater from the treatment facilities is prohibited. 7. The following buffers shall be maintained: a) 400 feet between wetted area and any residence or places of public assembly under separate ownership, b) 150 feet between wetted area and property lines, c) 100 feet between wetted area and wells, d) 100 feet between wetted area and drainage ways or surface water bodies, e) 50 feet between wetted area and public right of ways, f) 100 feet between treatment/storage units and any wells, and g) 50 feet between treatment units and property lines. II. OPERATION AND MAINTENANCE REOUIREMENTS 1. Within ninety (90) days of permit issuance, the Permittee shall submit a map detailing the longleaf pine planting layout. All trees shall be planted with a ten (10) foot radius setback from all spray risers. 2. Within ninety (90) days of permit issuance, the Permittee shall submit a map depicting all stream monitoring points (see Condition 111.5). A suitable year round vegetative cover shall be maintained in accordance with the Nutrient Management Plan (Attachment A). Once established, the vegetative cover on the wetted area of the new, modified, and existing spray irrigation facilities shall be observed and maintained as follows: a. Harvest and reestablish the tree cover crop in accordance with the "Tree Harvest Operational Plan" that was prepared by East Coast Engineering Company, P.A. (i.e., see Attachment A). b. Inspect the grass cover crop once per week and maintain as necessary to harvest prior to reaching a 12 -inch height. The understory grasses shall be removed by bailing and harvesting. Harvested grass shall be removed from the wetted area; c. Evaluate the grass cover crop in September and March for survival and cover percentage and, if necessary, rake all bare areas to the surface layer and reseed; d. Evaluate the tree cover crop annually and prune as necessary to ensure proper distribution of the irrigated wastewater effluent (i.e., tree prunings shall be removed from the wetted area); and e. Have the tree cover crop evaluated by a arborist or agronomist once per permit cycle to determine overall vegetative cover health and to make recommendations as to those mature, dominant stands that should be whole -tree harvested and removed from the area. 4. The facilities shall be properly maintained and operated at all times. 5. Upon classification of the wastewater treatment and irrigation facilities by the Water Pollution Control System Operators Certification Commission (WPCSOCC), the Permittee shall designate and employ a certified operator to be in responsible charge (ORC) and one or more certified operator(s) to be back-up ORC(s) of the facilities in accordance with 15A NCAC 8G .0201. The ORC shall visit the facilities in accordance with 15A NCAC 8G .0204 or as specified in this permit and shall comply with all other conditions specified in these rules. d. Irrigation shall not be performed during inclement weather or when the ground is in a condition that will cause runoff. 7. Adequate measures shall be taken to prevent wastewater runoff from the irrigation field. 8. The facilities shall be effectively maintained and operated as a non -discharge system to prevent the discharge of any wastewater resulting from the operation of this facility. 9. The application rate shall not exceed the following: Field No.' Facilities No. Wetted Area acres a Cumulative Application Rate (inches er ear Vegetative Cover Crop IA W 0000798-A 6.50 44.20 Hardwood Plantation 1B WQ0000798-A 6.50 44.20 Hardwood Plantation 2A WQ0000798-A 6.50 44.20 Hardwood Plantation 2B WQ0000798-A 6.50 44.20 Hardwood Plantation 3 W 0000798-B 13.00 44.20 Hardwood Plantation 4 WQ0000798-B 13.00 44.20 Hardwood Plantation 5 WQ0000798-B 13.00 44.20 Hardwood Plantation 6` WQ0000798-B 12.16 53.04 Longleaf Pines 7` WQ0000798-B 12.28 39.52 Longleaf Pines 8` WQ0000798-B 23.36 52.00 Longleaf Pines 9 WQ0000798-A 2.00 100.36 Coastal Bermuda/Rye 10 WQ0000798-A 5.10 78.00 Longleaf Pines 11 WQ0000798-A 4.70 78.00 Longleaf Pines 12 WQ0000798-A 3.00 78.00 Longleaf Pines 13` WQ0000798-B 6.60 46.80 Longleaf Pines Sub -Total W 000798-A 40.80 511.16 n/a Sub -Total W 000798-B 93.40 323.96 n/a Total n/a 134.2 835.12 n1a a Each field shall be closely monitored during any spray irrigation event. Should the applied wastewater effluent be observed to accumulate on the ground surface, the application rates shall be reduced or irrigation shall be ceased accordingly. b The cumulative application rate shall be equivalent to the Ioading of wastewater effluent over any 12 -month period. ` Irrigation on these fields shall be performed for maximum period of one hour and shall be followed by a minimum rest period of three hours prior to initiating another spray irrigation event. d A suitable year-round grass cover crop shall be established and maintained in between the rows of the trees in those fields containing a hardwood plantation. 10. No type of wastewater other than that from the Town of Shallotte Wastewater Treatment Plant shall be irrigated onto the irrigation area. 11. No traffic or equipment shall be allowed on the disposal area except while installation occurs or while normal maintenance is being performed. 12. Public access to the land application sites shall be controlled during active site use. Such controls may include the posting of signs showing the activities being conducted at each site. 13. Freeboard in the facultative lagoons shall not be less than two feet at any time. 14. A protective vegetative cover shall be established and maintained on all earthen basin embankments (outside toe of embankment to maximum pumping elevation), berms, pipe runs, erosion control areas, and surface water diversions. Trees, shrubs, and other woody vegetation shall not be allowed to grow on the earthen basin dikes or embankments. Earthen basin embankment areas shall be kept mowed or otherwise controlled and accessible. 4 III. MONITORING AND REPORTING REQUIREMENTS 1. Any monitoring (including groundwater, surface water, soil or plant tissue analyses) deemed necessary by the Division to insure surface and ground water protection will be established and an acceptable sampling reporting schedule shall be followed. 2. Influent flow shall be continuously monitored and daily flow values shall be reported on Form NDMR. The Permittee shall install an appropriate flow measurement device consistent with approved engineering and scientific practices to ensure the accuracy and reliability of influent flow measurement. Flow measurement devices selected shall be capable of measuring flows with a maximum deviation of less than 10 percent from true flow, accurately calibrated at a minimum of once per year, and maintained to ensure that the accuracy of the measurements is consistent with the accepted capability of that type of device. The Permittee shall keep records of flow measurement device calibration on file for a period of at Ieast three years. At a minimum, data to be included in this documentation shall be: a. Date of flow measurement device calibration b. Name of person performing calibration c. Percent from true flow 3. The effluent from the subject facilities shall be monitored by the Permittee at the point following all wastewater treatment processes and prior to irrigation every month for the following parameters: NH3 as N NO2-NO3 BODS TKN - TSS Fecal Coliform PAN calculation 4. The effluent from the subject facilities shall be monitored by the Permittee at the point following all wastewater treatment processes and prior to irrigation every day for the following parameters: Effluent flow I Total Residual Chlorine 5. The surface water from upstream and downstream monitoring points for the wastewater treatment and spray irrigation facilities shall be monitored by the Permittee every month for the following parameters: Fecal Coliform Total Nitrogen PH The upstream surface water monitoring points for the WQ0000798-A facilities and the WQ0000798- B facilities shall be located at accessible points on Stinking Well Branch (Woodward Branch) and Charles Branch and at the intersection of Mulberry Branch and Forest Drive Extension, respectively. The downstream surface water monitoring points for the WQ0000798-A facilities and the WQ0000798-B facilities shall be located immediately below the confluence of Stinking Well Branch (Woodward Branch) and Charles Branch and at the intersection of Mulberry Branch and North Carolina State Road 1348, respectively. 6. The Permittee tracking the amount of wastewater disposed shall maintain adequate records. These records shall include, but are not necessarily limited to, the following information: a. Date of irrigation, b. Volume of wastewater irrigated, c. Field irrigated, d. Length of time field is irrigated, e. Continuous weekly, monthly, and year-to-date hydraulic (inches/acre) loadings for each field, f. Weather conditions, and g. Maintenance of cover crops. 7. Freeboard in the facultative lagoons shall be recorded weekly. 8. Three (3) copies of all monitoring data [as specified in Conditions 111(2), 111(3), 111(4), and IU(5)] on Form NDMR-1 and three (3) copies of all operation and disposal records [as specified in Conditions 111(6) and 111(7)] on Form NDAR-1 shall be submitted on or before the last day of the following month. All information shall be submitted to the following address: Division of Water Quality Information Processing Unit 1617 Mail Service Center Raleigh, North Carolina 27699-1617 9. An annual representative soils analysis (Standard Soil Fertility Analysis) shall be conducted on each irrigation field and the results maintained on file by the Permittee for a minimum of five years. The Standard Soil Fertility Analysis shall include, but is not necessarily limited to, the following parameters: Acidity Manganese Potassium Calcium Percent Humic Matter Sodium Co er pH Zinc Magnesium Base Saturation (by calculation) Phosphorus Cation Exchange Capacity Exchangeable Sodium Percenta e 10. Noncompliance Notification: The Permittee shall report by telephone to the Wilmington Regional Office, telephone number (910) 796-7215, as soon as possible, but in no case more than 24 hours or on the next working day following the occurrence or first knowledge of the occurrence of any of the following: a. Any occurrence at the wastewater treatment facility which results in the treatment of significant amounts of wastes which are abnormal in quantity or characteristic, such as the dumping of the contents of a sludge digester; the known passage of a slug of hazardous substance through the facility; or any other unusual circumstances. b. Any process unit failure, due to known or unknown reasons, that render the facility incapable of adequate wastewater treatment such as mechanical or electrical failures of pumps, aerators, compressors, etc. c. Any failure of a pumping station, sewer line, or treatment facility resulting in a by-pass directly to receiving waters without treatment of all or any portion of the influent to such station or facility. d. Any time that self-monitoring information indicates that the facility has gone out of compliance with its permit limitations. Occurrences outside normal business hours may also be reported to the Division's Emergency Response personnel at telephone number (800) 662-7956, (800) 858-0368, or (919) 733-3300. Persons reporting such occurrences by telephone shall also file a written report in letter form within five (5) days following first knowledge of the occurrence. This report must outline the actions taken or proposed to be taken to ensure that the problem does not recur. IV. GROUNDWATER REOUMEMENTS 1. The nine existing groundwater monitoring wells (i.e., MW -6, MW -7, MW -8, MW -9, MW -10, MW - 11, MW -12, MW -13, and MW -14) shall be sampled every March, July, and November for the following parameters: Chlorides Total Ammonia -Nitrogen (NH3-N) Fecal Coliform Total Dissolved Solids (TDS) Nitrate -Nitrogen (NO3-N) Total Organic Carbon (TOC) PH Water Level Volatile Organic Compounds (VOC), in November only, by one of the following methods: (A) Standard Method 6230D, PQL at 0.5 gg/L or less (B) Standard Method 621013, PQL at 0.5 gg/L or less (C) EPA Method 8021, Low Concentration, PQL at 0.5 gg/L or less (D) EPA Method 8260, Low Concentration, PQL at 0.5 µg/L or less (E) Another method with prior approval by the Groundwater Section Chief Any method used must meet the following qualifications: (1) A laboratory must be DWQ certified to run any method used. (2) The method used must, at a minimum, include all the constituents listed in Table VIII of Standard Method 6230D. (3) The method used must provide a PQL of 0.5 [tg/L or less that must be supported by laboratory proficiency studies as required by the DWQ Laboratory Certification Unit. Any constituents detected above the MDL but below the PQL of 0.5 µg/L must be qualified (estimated) and reported. The measurement of water levels must be made prior to sampling for the remaining parameters. The depth to water in each well shall be measured from the surveyed point on the top of the casing. If any volatile organic compounds are detected by the methods listed, then the Wilmington Regional Office Aquifer Protection Supervisor, telephone number (910) 796-7215, must be contacted immediately for further instructions regarding any additional follow-up analyses required. The results of all initial and follow-up analyses must be submitted simultaneously. The results of the sampling and analysis must be received on Form GW -59 (Groundwater Quality Monitoring; Compliance Report Form) by the Division of Water Quality, Information Processing Unit, 1617 Mail Service Center, Raleigh, N.C. 27699-1617 on or before the last working day of the month following the sampling month. 2. The COMPLIANCE BOUNDARY for the disposal system shall be as specified by regulations in 15A NCAC 2L (i.e., "Groundwater Classifications and Standards"). The Compliance Boundary for a disposal system individually permitted after December 31, 1983 shall be established at either (1) 250 feet from the waste disposal area or (2) 50 feet within the property boundary, whichever is closest to the waste disposal area. An exceedance of groundwater quality standards at or beyond the Compliance Boundary shall be subject to immediate remediation action in addition to the penalty provisions applicable under North Carolina General Statute § 143-215.6A(a)(1). 3. In accordance with 15A NCAC 2L, a REVIEW BOLTNDARY shall be established around the disposal system midway between the Compliance Boundary and the perimeter of the waste disposal area. Any exceedance of groundwater quality standards at the Review Boundary shall require remediation action on the part of the Permittee. 4. Any additional groundwater quality monitoring, as deemed necessary by the Division, shall be provided. V. INSPECTIONS 1. Adequate inspection, maintenance, and cleaning shall be provided by the Permittee to insure proper operation of the subject facilities. 2. The Permittee or his designee shall inspect the wastewater treatment and disposal facilities to prevent malfunctions and deterioration, operator errors and discharges which may cause or lead to the release of wastes to the environment, a threat to human health, or a nuisance. The Permittee shall keep an inspection log or summary including at least the date and time of inspection, observations made, and any maintenance, repairs, or corrective actions taken by the Permittee. This log of inspections shall be maintained by the Permittee for a period of three years from the date of the inspection and shall be made available upon request to the Division or other permitting authority. 3. Any duly authorized officer, employee, or representative of the Division may, upon presentation of credentials, enter and inspect any property, premises or place on or related to the disposal site or facility at any reasonable time for the purpose of determining compliance with this permit; may inspect or copy any records that must be maintained under the terms and conditions of this permit, and may obtain samples of groundwater, surface water, or leachate. VI. GENERAL CONDITIONS 1. This permit shall become voidable unless the facilities are constructed in accordance with the conditions of this permit, the approved plans and specifications, and other supporting data. 2. This permit is effective only with respect to the nature and volume of wastes described in the application and other supporting data. 3. This permit is not transferable. In the event there is a desire for the facilities to change ownership, or there is a name change of the Permittee, a formal permit request must be submitted to the Division accompanied by an application fee, documentation from the parties involved, and other supporting materials as may be appropriate. The approval of this request will be considered on its merits and may or may not be approved. 4. Failure to abide by the conditions and limitations contained in this permit may subject the Permittee to an enforcement action by the Division in accordance with North Carolina General Statute 143- 215.6A to 143-215.6C. 5. The issuance of this permit does not exempt the Permittee from complying with any and all statutes, rules, regulations, or ordinances which may be imposed by other government agencies (local, state, and federal) which have jurisdiction, including but not limited to applicable river buffer rules in 15A NCAC 2B .0200, erosion and sedimentation control requirements in 15A NCAC Chapter 4 and under the Division's General Permit NCGO10000, and any requirements pertaining to wetlands under 15A NCAC 2B .0200 and 2H.0500. 6. The Permittee shall retain a set of approved plans and specifications for the life of the project. 7. The Permittee must pay the annual administering and compliance fee within thirty (30) days after being billed by the Division. Failure to pay the fee accordingly may cause the Division to initiate action to revoke this permit as specified by 15A NCAC 2H .0205 (c)(4). 8. The Permittee, at least six (b) months prior to the expiration of this permit, shall request its extension as well as a modification and schedule to expand the spray irrigation facilities. The purpose of this expansion shall be to establish a "repair area" that can meet the hydraulic and nutrient demands that will be created when certain spray irrigation fields are taken out of service for harvesting and reestablishment of the tree cover crop. Upon receipt of the request, the Commission will review the adequacy of the facilities described therein, and if warranted, will extend the permit for such period of time and under such conditions and limitations as it may deem appropriate. 9. The subject wastewater treatment and disposal facilities shall be connected to an operational publicly owned wastewater collection system within 180 days of its availability to the subject facilities, if the subject wastewater treatment or disposal facilities are in noncompliance with the terms and conditions of this non -discharge permit or the governing statutes or regulations. Prior to the initiation of these connection activities, appropriate approval must be received from this Division. Permit issued this;he 21" day of November, 2005 NORTH C/A(1tOLINA MWIRONMENTAL MANAGEMENT COMMISSION lan W. Klimek, P.E., Director Division of Water Quality By Authority of the Environmental Management Commission Permit Number WQ0000798 9 Permit No. WQ0000798 November 21, 2005 ENGINEER'S CERTIFICATION Partial Final I, , as a duly registered Professional Engineer in the State of North Carolina, having been authorized to observe (periodically, weekly, full time) the construction of the project, Project Name Location and County for the Permittee hereby state that, to the best of my abilities, due care and diligence was used in the observation of the construction such that the construction was observed to be built within substantial compliance and intent of this permit, the approved plans and specifications, and other supporting materials. Signature Date 10 Registration No. .�. � � • 9 tf � � I 4'�s`��' s+,r� }� y - ..'S�y�tr t 1 •11 4 } ft rLIJAM ME] m Illy y t ;; �dj� µi'.1 r'.^A p' L�^+ � ' •�.'� �~%. Y,��:` 9 '* I. b�'•^iK 'r, � fit. '�' +.5.. TI! PT \A monitoHn-a'POITI, dream 7 .') i: ;.'rail. 'taT C) Jin'L "I ----------- =)im OF T No. Upstream Monitoring Point -rz-7,- 11 r 1> Downstream Monitoring Point :Loner z el rl .......... b NIL :7 . •. .......... ..... S _7 J S, oft 57 - IF -�j Y 71 lr- I I NUTRIENT MANAGEMENT PLAN For Town of Shallotte, NC Wastewater Treatment Plant Spray Field Expansion . P.O. Box 2287 Shallotte, NC 28459 ATTAc-+At-=4A V\f:k000a-7-gg pvv� o C�dL LO FV *klrw& . 60, 1-n r,; :) t A. General Information: -- .v The Town of Shallotte, NC is modifying its wastewater spray application site. The current cropping system is being modified and the spray site acreage is being expanded. Approved changes voigbe implemented on the existing spray fields. Approved practices will be conducted on the expanded spray field. An appropriately engineered solid set irrigation system has been installed to ensure the even distribution of effluent across the spray fields. There are approximately 12 acres in the existing spray areas to be modified (fields # 10 and #11). There are approximately 59 acres in the expansion area (fields #6, #7, #S and #13). Fields, tree planting pattern, and irrigation installation design are delineated on East Coast Engineering Company, PA Tree Planting Plan for Town of Shallotte WWTP map dated 11120/2003. B. CROPS to be GROWN and their APPROPRIATE PLANTING DATES: EXIXTING APPLICATION AREA (Fields #10 and #11) L rIr=:LD i�— 12. The existing spray site is seeded in coastal Bermuda grass as the receiver crop for the treated wastewater. The Bermuda grass is over seeded in the fall with cereal rye. During the fall/winter 2004 Long Leaf Pine (Pinus Palustris) will be planted in to the existing Bermuda grass sod. Longleaf pine grows well in damp as well as sandy soils. The pine trees -will be planted on a 10' x 10' plantation regime resulting in approximately 450 trees per acre. The Bermuda grass will be maintained. EXPANDED APPLICATION AREA (Fields #6,97, 48, and #13) The expanded spray area has been appropriately cleared and seeded in common Bermuda grass. During the fall/winter 2004 this area will be planted with Long Leaf Pine ( Pinus Palustris) on a 10' x 10' plantation regime resulting in approximately 450 trees per acre. The Bermuda grass will be maintained. Town of Shallotte Nutrient Management Plan November 22, 2004 Page 1 of 5 CelW114ATUIV4 All Bermuda grass will be over seeded in the fall with cereal rye at the rate of 100 pounds seed per acre. It is anticipated that the combination of pine trees with the Bermuda grass for summer and the pine trees with the cereal rye for the winter should assimilate the nutrient load projected to be applied. All seeded pine seedling will be improved varieties. Pine plantations seeded at the rate of 450 trees per acre are common. It is recommended that deceased trees be replaced promptly to ensure projected nitrogen uptake. The forage grass will be maintained so as to limit the under story development. Any area of the forage grass that falls below 80% land cover will be re -vegetated during the appropriate growing season. The pine tree plantation will be established under the auspices of a Forestry Consultant. C. NITROGEN REQUIREMENTS OF THE CROPS: The nitrogen requirements for the Bermuda grass and the cereal rye are based upon the Realistic Yield Expectations (RYE) as developed by the National Resources Conservation Service (MRCS) and is based on the Soil Type present where the crops are to be grown. RYE values found in NCSU, Nutrient Management Planning Manual, page 75 of the Reference Section. The nitrogen requirements for the pine trees are based on the Forestry Site Index as set forth in the NRCS Soil Survey Report for Brunswick County, North Carolina, issued in 1986, Table # 7, and page 88-90. These Site Indexes are also based on Soil Types present. Soil pH should be closely monitored to ensure pH of 6.0 or less is maintained in all pine growth areas. A pH above 6.0 will definitely cause growth problems in pine trees. The effluent to be applied to the expansion site has consistently been above pH 7.0 for the previous 12 months, The pH recommended for Long Leaf Pine is 5.5 — 6.0. The application of this effluent will tend to raise soil pH overtime. The buffering capabilities of the soil will prevent drastic shifts in soil pH. The soil pH should be monitored closely to track soil pH trends. Appropriate actions can be developed to adjust soil pH when deemed necessary. The corrective action to be taken will be dictated by the specific circumstances present at that time. It would be speculation to suggest the most appropriate action at this time. To change the pH in the soil requires time, so close monitoring (a soil sample analysis every 6 months) should established as a standard operating procedure. The nitrogen recommendations for the Long Leaf Pine are based on the "grass" stage of growth for the pines. This growth stage will last 3 to 5 year depending on soil type, environmental conditions, and many other condition too numerous to delineate. Nitrogen rates should be revised for a mature pine stand. Nitrogen rates for mature pine stands can Town of Shallotte Nutrient Management Plan November 22, 2004 Page 2 of 5 be found in EPA Process Design Manual, Land Application of Municipal Sludge (EPA - 625/1 -83-016) dated October 1083, Table 7-2 located on page 7-7. Nitrogen recommendations are based on Plant Available Nitrogen (PAN). Bermudagrass can uptake 50 lbs. of nitrogen for ton of RYE forage produced. Cereal rye can uptake 50 lbs. of nitrogen for ton of RYE produced. Uptake numbers are not available for all crops on all soil types. RYE and Site Index via Soil Type Crop Soil Type RYE Site Index Nitrogen/acre Bermuda grass Baymeade 5.5 tons 275 lbs. Bermuda grass Blanton 4.5 tons 225 lbs. Bermuda grass Lynchburg. 5.5 tons 275 lbs. Bermuda Eass Muckolee 4.5 tons 225 lbs. Bermuda grass Onslow 6.5 tons 325 lbs. Bermuda grass Foreston 6.0 tons 300 lbs. Cereal rye Baymeade n/a Cereal rye Blanton n/a Cereal ge Lynchburg n/a - Cereal a Muckolee n/a Cereal a Onslow n/a Cereal rye Foreston n/a Longleaf pine Ba meade 65 Low 25-30 lbs. PAN Lon leaf pine Blanton 70 (Moderate) 25-30 lbs. PAN Longleaf pine Lynchburg 74 (Moderate) 25-30 lbs. PAN Longleaf pine Muckolee Not listed 25-30 lbs, PAN Longleaf pine Onslow 67 (Moderate) 25-30 lbs PAN Longleaf pine Foreston 75 (Moderate) 25-30 lbs, PAN Site Index and RYE rates are based on the dominate soil type in the application area. D. APPLICATION RATES: This Nutrient Management Plan is based on the projected wastewater application rates as developed in the soil scientist's report, Land Application Site Evaluation for Town of Shallotte Expansion Area, Brunswick County, NC by Edwin Andrews & Associates, PC, Consulting Hydrogeologists, Raleigh, NC, dated September 6, 1999. If the application rates change or the nutrient content of the effluent changes then the Nutrient Management Plan should be modified accordingly. Town of Shallotte Nutrient Management Plan November 22, 2004 Page 3 of 5 E. APPLICATION METHOD: The treated effluent will be evenly applied over the entire permitted spray application site by a solid set irrigation system appropriately engineered and installed under the supervision of a professional engineer. The irrigation application equipment should be calibrated annually. F. ADDITIONAL FERTILITY REQUIREMENTS: Only nutrients in the wastewater will be applied to the spray fields. Any additional nutrients will be applied strictly in accordance with the annual soil test recommendations. Soil test results for the crops grown must be obtained annually. Buffer areas where no wastewater is applied should be maintained. The addition of commercial fertilizer nutrients, when warranted, should be in accordance with the calculated nutrient application from the wastewater. G. HARVESTING of the CROPS: The harvesting of the pine straw and ultimately the pine trees will be under the guidance of a Forestry Consultant. , K SOM ERROSION and RUNOFF: Given that the slopes on this site, as specified in the Soil Scientists Report, do not exceed five percent (5%), a 50 foot grass buffet should prevent wastewater from migrating off site. Adequate buffers are identified in the approved application site to ensure effluent does not leave the approved application site. I. ENDANGERED SPECIES: No endangered plants or animals have been identified in the wastewater application site. J. APPLICATION SITE: This Nutriment Management Plan prepared for NCDENR Permit No. WQ 0000 77$. Town of ShalIotte Nutrient Management Plan November 22, 2004 Page 4of5 e K. CERTWICATION: SUBMITTED BY -DATE Si ature of Perini e Operator Plan prepared by: Phillip Ricks P. O. Box 729 Oak Island, NC 28465 North Carolina & National Certified Crop Advisor # 19575 Town of Shallotte Nutrient Management Plan November 22, 2004 Page 5 of 5