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HomeMy WebLinkAboutWQ0002128_Final Permit_19950530State of North Carolina IT R Department of Environment, Health and Natural Resources Division of Environmental Management James B. Hunt, Jr., Governor Jonathan B. Howes, Secretary p � H N F� A. Preston Howard, Jr., P.E., Director May 30, 1995 Mr. Nick Crane, Managing Agent Pebble Beach Homeowners Association, Inc. P.O. Box 4455 Emerald Isle, NC 28594 Subject: Permit No. WQ0002128 Pebble Beach HOA, Inc. Pebble Beach Condominiums Wastewater Rotary Distributor Facilities Carteret County Dear Mr. Crane: In accordance with your renewal request received January 12, 1995, we are forwarding herewith Permit No. WQ0002128, dated May 30, 1995, to the Pebble Beach Homeowners Association for the continued operation of the subject wastewater collection, treatment and rotary distributor facilities. Please be advised that the permit is being issued for a reduced period of two (2) years and six (6) months due to the routine presence of high/excessive levels of nitrates and total dissolved solids (TDS) in groundwater samples from two of the monitor wells since their installation (1992). At least six months prior to expiration of the permit, application should be made to the Division for permit renewal. The two (2) year period between the date of issuance and submittal of the renewal request should be utilized by the permittee to implement steps to help eliminate the high nitrate and TDS levels mentioned previously. If violations continue during this permit cycle, a Corrective Action Plan (CAP) may have to be implemented. Please also be advised of condition IV 1, which requires that the existing media in the rotary distribution fields be removed and replaced with new media. This action should be taken as soon as possible. The permittee should begin coordinating a satisfactory schedule for media replacement with the Division's Wilmington Regional Office immediately after permit issuance. This permit shall be effective from the date of issuance until November 30, 1997, shall void Permit No. WQ0002128 issued August 10,,1990, 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 150B of the North Carolina General Statutes, and filed with the Office of Administrative Hearings, P.O. Drawer 27447, Raleigh, NC 27611-7447. Unless such demands are made this permit shall be final and binding. P.O. Box 29535, Raleigh, North Carolina 27626-0535 Telephone 919-733-5083 FAX 919-733-9919 An Equal Opportunity Affirmative Action Employer 50% recycled/ 10% post -consumer paper If you need additional information concerning this matter, please contact WNW4blx:-at (919) 733-5083 ext. 549. Sincerely, � 0"�ZD � CcJ A. Prest Howard, Jr., P.E. 4 cc: Carteret County Health Department Wilmington Regional Office, Water Quality Section Wilmington Regional Office, Groundwater Section Brian Wootton, Groundwater Section, Central Office Training and Certification Unit (No Revised Rating) Facilities Assessment Unit NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION DEPARTMENT OF ENVIRONMENT, HEALTH AND NATURAL RESOURCES RALEIGH HIGH RATE INFILTRATION 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 THE Pebble Beach Homeowners Association, Incorporated Carteret County [9L01: x.i continued operation of a wastewater collection system consisting of approximately 1,370 linear feet of fl- inch gravity sewer, a 125 gpm influent pump station with dual pumps and approximately 35 linear feet of 4-inch force main, and the continued operation of a 70,000 GPD wastewater treatment and dual rotary distributor facility consisting of a bar screen, a 30,000 gallon aerated flow equalization basin with dual 70 gpm pumps and a 1,100 cfm blower, a flow splitter, dual 35,000 gallon aeration tanks with dual blowers, dual clarifiers, dual aerated sludge holding tanks and an additional 5,800 gallon aerated sludge holding tank, a tertiary filter unit consisting of a 5,700 gallon clear well with dual 600 gpm backwash pumps and a 50 cfm blower, dual tertiary filters (each with a surface area of 38 ft2), a 6,400 gallon mud well with dual 60 gpm return pumps, a chlorine contact tank with dual tablet type chlorinators, a 4,200 gallon dosing tank, , dual rotary distributors (each with a diameter of 70 feet), an automatically activated standby power unit, and all associated piping, valves and appurtenances to serve the Pebble Beach Condominiums, with no discharge of wastes to the surface waters, pursuant to the renewal request received January 12, 1995, and in conformity with the project plan, specifications, and other supporting data subsequently filed and approved by the Department of Environment, Health and Natural Resources and considered a part of this permit. This permit shall be effective from the date of issuancu,.until November 30, 1997, shall void Permit No. WQ0002128, issued August 10, 1990, and shall be subject to the following specified conditions and limitations: I. PERFORMANCE STANDARDS In the event that the facilities fail to perform satisfactorily, including the creation of nuisance conditions, the Permittee shall take immediate corrective actions, including those actions that may be required by this Division, such as the construction of additional or replacement wastewater treatment or disposal facilities. 2. This permit shall become voidable if the soils fail to adequately assimilate the wastes and may be rescinded unless the facilities are installed, maintained, and operated in a manner which will protect the assigned water quality standards of the surface waters and ground waters. The ponding of wastewater on the surface of the distribution field when the dosing cycle commences shall be considered as evidence of failure of the soils to adequately assimilate the wastewater. Additionally, such failure shall be interpreted as a violation of this permit condition. 3. 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 North Carolina Division of Environmental Management. 4. Adequate measures shall be taken to divert stormwater from the high rate infiltration area and to prevent wastewater runoff. 5. Diversion or bypassing of the untreated wastewater from the treatment facilities is prohibited. 6. 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. 7. The following buffers shall be maintained: a) 400 feet between high rate infiltration unit and any habitable residence or place of public assembly under separate ownership or which is to be sold, b) 200 feet between high rate infiltration unit and any private or public water supply source and any streams classified as WS or B, c) 200 feet from mean high water between high rate infiltration unit and any "SA" or "SB" classified surface waters, d) 200 feet from normal high water between high rate infiltration unit and any other stream, canal, marsh, or coastal waters, e) 200 feet from normal high water between high rate infiltration unit and any Class I or Class 11 impounded reservoir used as a source of drinking water, f) 200 feet between high rate infiltration unit and any other lake or impoundment, g) 200 feet between high rate infiltration unit and any Drainage systems (ditches, drains, surface water diversions, etc.) and from any groundwater lowering and surface drainage ditches, h) 100 feet between high rate infiltration unit and property lines, i) 50 feet between treatment units and property lines, and j) 50 feet between high rate infiltration unit and other treatment units and public right of ways. Some of the buffers specified above may not have been included in previous permits for this waste treatment and disposal system. These buffers are not intended to prohibit or prevent modifications, which are required by the Division, to improve performance of the existing treatment facility. These buffers do, however, apply to modifications of the treatment and disposal facilities which are for the purpose of increasing the flow that is tributary to the facility. These buffers do apply to any expansion or modification of the high rate infiltration areas and apply in instances in which the sale of property would cause any of the buffers now complied with, for the treatment and disposal facilities, to be violated. The applicant is advised that any modifications to the existing facilities will require a permit modification. 8. A usable green area shall be maintained for wastewater disposal. The green area shall have the capability of accommodating the average daily flow of the facility being served without exceeding the loading rates of the green area. A "green area", as defined in 15A NCAC 2H .0404 (g)(7), is an area suitable for waste disposal, either in its natural state or which has been modified by planting a vegetative cover of grasses or low growing shrubbery. 2 II. OPERATION AND MAINTENANCE REQUIREMENTS 1. The facilities shall be properly maintained and operated at all times. 2. Upon classification of the facility by the Certification Commission, the Permittee shall employ a certified wastewater treatment plant operator to be in responsible charge (ORC) of the wastewater treatment facilities. The operator must hold a certificate of the type and grade at least equivalent to or greater than the classification assigned to the wastewater treatment facilities by the Certification Commission. The Permittee must also employ a certified back-up operator of the appropriate type and grade to comply with the conditions of Title 15A, Chapter 8A, .0202. The ORC of the facility must visit the plant at least five days per week, excluding holidays. During the months of April through October, the five days shall be Monday, Wednesday, Friday, Saturday and Sunday. The ORC must also properly manage and document daily operation and maintenance of the facility and must comply with all other conditions of Title 15A, Chapter 8A, .0202. 3. The application rates for the high rate infiltration system shall not exceed 10 GPD/ft2 4. The facilities shall be effectively maintained and operated as a non -discharge system to prevent the discharge of any wastewater outside of the high rate infiltration disposal area, which result from the operation of this facility. 5. No traffic or equipment shall be allowed on the disposal area except while installation occurs or while normal maintenance is being performed. 6. The rotary distribution fields shall be raked twice weekly during the months April through October and once a week during the months of November through March. 7. The screenings removed from the wastewater treatment plant shall be properly disposed in a sanitary landfill or by other means which have been approved by this Division. 8. Vegetative growth must be kept out of the rotary distribution areas at all times. All vegetation must be removed manually so that minimal disturbance will occur to the disposal area. 9. The application of chemicals to the distribution field(s) is expressly prohibited. 10. An automatically activated standby power source shall be on site and operational at all times. If a generator is employed as an alternate power supply, it shall be tested weekly by interrupting the primary power source. 11. The flow measurement device shall be calibrated annually by a representative of a firm which is routinely engaged in the calibration of flow measurement devices. Records of this calibration, including all information pertinent to the calibration, shall be available during any inspection by Division staff. 12. Diffusers shall be cleaned as needed to ensure that adequate aeration is provided. Records of this maintenance shall be maintained by the permittee. 13. The chlorine tablets used in the disinfection facility shall be of the kind and type specified in the plans and specifications approved by the Division. III. MONITORING AND REPORTING -REQUIREMENTS 1. 'Any monitoring deemed necessary by the Division of Environmental Management to insure surface and ground water protection will be established and an acceptable sampling reporting schedule shall be followed. 2. As an indicator of proper operation and maintenance, the facility shall produce an effluent in compliance with the following limitations: Parameter Monthlv Avera2ea Daily Maximumb Flow 70,000 GPD BOD5 (5-day, 20°C) 10 mg/l NH3 - N 4 mg/l TSS 20 mg/l Fecal Coliform 14 per 100 ml 43 per 100 ml a Monthly average shall be the arithmetic mean of all samples collected during the reporting period. b Daily maximum shall be the maximum value of all samples collected during the reporting period. The effluent from the subject facilities shall be monitored, by the Permittee, at the point prior to discharge to the long term holding pond for the following parameters: Parameter Sampling Point Sampling Frequency Type of Sample Flow BOD5 (5-day, 20°C) NH3 as N TSS Fecal Coliform Settleable Matter Residual Chlorine NO3 TDS TOC Chloride The effluent pH shall units. Influent or Effluent Continuous Recording Effluent *2/Month Composite Effluent *21Month Composite Effluent *2/Month Composite Effluent of first pond 2/Month Grab Effluent Daily Grab Effluent Daily Grab Effluent Triannualiy Grab Effluent Triannualiy Grab Effluent Triannually Grab Effluent Triannually Grab not be less than 6.0 standard units nor greater than 9.0 standard 2/Month sampling frequency only during the months of April through October. During the remainder of the year, these parameters shall be monitored monthly. * Triannual sampling shall be conducted during March, July and November. If Groundwater sampling indicates or predicts problems with compliance with of the Groundwater Standards, this permit will be modified to include additional and/or more restrictive limitations. 3. Three (3) copies of all effluent monitoring data (as specified in condition 111 2) on Form NDMR- I shall be submitted on or before the last day of April, August and December . All information shall be submitted to the following address: NC Division of Environmental Management Water Quality Section Facility Assessment Unit Post Office Box 29535 Raleigh, N.C. 27626-0535 4 4. A record shall be maintained of all residuals removed from this facility. The record shall include the name of the hauler, the permit authorizing the disposal or a letter from a municipality agreeing to accept the residuals, the date the residuals were hauled, and the volume of residuals removed. 5. A maintenance log shall be maintained at this facility including, but not limited to, the following items: a. Daily sampling results including residual chlorine, settleable matter, and dissolved oxygen in the aeration basin and at the clarifier weir; b. Visual observations of the plant and plant site; c. Record of preventative maintenance (changing of filters, adjusting belt tensions, alarm testing, diffuser inspections and cleanings, etc.); d . Date of calibration of flow measurement device; e. Date and results of power interruption testing on alternate power supply; and f. Dates fields were raked and arms inspected. 6. Noncompliance Notification: The Permittee shall report by telephone to the Wilmington Regional Office, telephone number (910) 395-3900, 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 basin or tank, 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 renders 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 of all or any portion of the influent to such station or facility; or d. Anytime that self -monitoring information indicates that the facility is not in compliance with its permit limitations. Persons. reporting such occurrences by telephone shall also file a written reportin letter form within 15 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 REQUIREMENTS 1. The existing media in the two rotary distribution fields shall be removed and replaced with new media as soon as possible (as agreed upon by the Wilmington Regional Office). 2. The four (4) existing monitor wells (MW-1, MW-2, MW-3 and MW-4), as depicted on the attached site map (Attachment A), shall be sampled every March, July and November for the following parameters: NO3 Ammonia Nitrogen pH Sodium TDS TOC Total Phosphorus Water Level Chloride Fecal Coliform Volatile Organic Compounds - In November only (by Method 1 or 2 below) Method 1: Method 6230D (Capillary - Column), "Standard Methods For The Examination of Water and Wastewater", 17th ed., 1989 Method 2: Method 502.2 "Methods For The Determination Of Organic Compounds In Drinking Water", U.S. EPA-600/4-88/039 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. The measuring points (top of well casing) of all monitoring wells shall be surveyed to provide the relative elevation of the measuring point for each monitoring well. If TOC concentrations greater than 10 mg/1 are detected in any downgradient monitoring well, additional sampling and analysis must be conducted to identify the individual constituents comprising this TOC concentration. If the TOC concentration as measured in the background monitor well exceeds 10 mg/l, this concentration will be taken to represent the naturally occurring TOC concentration. Any exceedances of this naturally occurring TOC concentration in the downgradient wells shall be subject to the additional sampling and analysis as described above. If any volatile organic compounds are detected by Method 6230D, or the equivalent Method 502.2, then the Wilmington Regional Office Groundwater Supervisor, telephone number (910) 395-3900, 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 shall be sent to the Groundwater Section, Permits and Compliance Unit, P.O. Box 29535 Raleigh, N.C. 27626-0535 on Form GW-59 [Compliance Monitoring Report Form] every April, August and December. 3. Any additional groundwater quality monitoring, as deemed necessary by the Division, shall be provided. 4. The COMPLIANCE BOUNDARY for the disposal system is specified by regulations in 15A NCAC 2L, Groundwater Classifications and Standards. The Compliance Boundary for the disposal system constructed prior to December 31, 1983 is established at either (1) 500 feet from the waste disposal area, or (2) at the property boundary, whichever is closest to the waste disposal area. An exceedance of Groundwater Quality Standards at or beyond the Compliance Boundary is subject to immediate remediation action in addition to the penalty provisions applicable under General Statute 143-215.6A(a)(1). In accordance with 15A NCAC 2L, a REVIEW BOUNDARY is established around the disposal systems midway between the Compliance Boundary and the perimeter of the waste disposal area. Any exceedance of standards at the Review Boundary shall require remediation action on the part of the permittee. V . INSPECTIONS 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 maintain 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 to the Division of Environmental Management or other permitting authority, upon request. Any duly authorized officer, employee, or representative of the Division of Environmental Management 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 of Environmental Management 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. 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. 5. The annual administering and compliance fee must be paid by the Permittee 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 .02a5 (c)(4). 6. Failure to abide by the conditions and limitations contained in this permit may subject the Permittee to an enforcement action by the Division of Environmental Management in accordance with North Carolina General Statute 143-215.6(a) to 143-215.6(c). 7. 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. . 8. A set of approved plans and specifications for the subject project must be retained by the Permittee for the life of this project. 9. The Permittee, at least six (6) months prior to the expiration of this permit, shall request its extension. 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. Permit issued this the thirtieth day of May, 1995 NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION } A. Preston �oward, Jr., PE, Director / Division of nvironmental Management By Authority of the Environmental Management Commission Permit Number WQ0002128 8 r1 N W 1 Mw w o r1 Q' r11 C14M0 1 rro'' p o o "1 a) zap �v:141 O 1 �� �.�,�t1E ti-I � ! .� � o `mot, � 1 ��,�• � �44 1 41 1 4 .1 d jjII sue. �• .ti to t Y� LIt, o i U �-'.�.�a 1.4 i4•' .:+ai r- Il l`U � 51.r� � �r `-U' �`l ''r�tl •�1��. „. � �, Ki '`� j! ��V�I U� �+ �. L 11��! � Ili � ��• °\ A Qom. U m la F--► MA , r W W Inc ry Y IY L- o N q LLJ ;{ d 0o �Z3; F- r o Ln oot - li.l � o m o CL�r W Z 111 Z� e J ULn4 d y U < o s s z i 4, LEr a _ U o x r a 0 a in 1- 1 x a z`- V � � o m 5 �� ATTACHMENT A 93.0 r Nores z/ VALUrs /tq rilE Cf�ri•Nw.0.TEl� k�.Lv,nTror� ,c��_ .r�r� w��_._, jZr�A-Ir/YF To ^i-f P 5�NIl=I.� l lvl. 4 �,O 93. o Mw-+ ( 7 3. -73 ') V A,. r-i L> . C�8 , 93S. D r1 -Ll lv 7 Vlp,srLWAr R ROTAJZY 1r10. 1 F'AGrR-rrY1 (jjfNC9AL- Drv6G-r /orl or 6RovNDw.0\-rE2 FLOW 5'3.5' (9 SSA C) ROTARY N Z MW-2 ( 23—gy 7. Sc AJ-.E~ roe !00+ PEBBLE BEACH CONDOMINIUMS CARTERET COUNTY PE1tM1T NO_ WQ0002128 ]WEDOEPM IBAD•OIE