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HomeMy WebLinkAboutWQ0002648_Final Permit_19910821State of North Carolina Department of Environment, Health and Natural Resources Division of Environmental Management 512 North Salisbury Street • Raleigh, North Carolina 27626-0535 James G. Martin, Governor William W. Cobey, Jr., Secretary August 21, 1991 Mr, Darius Luck, Plant Manager Luck's, Incorporated Post Office Box 510 Seagrove, North Carolina 27341 George T. Everett, Ph.D, Directo Subject: Permit No. WQ0002648 Amendment Luck's, Incorporated Wastewater Treatment and Spray Irrigation System Randolph County Dear Mr. Luck: In accordance with your application received October 30, 1989, and your request for permit amendment dated December 10, 1990, we are forwarding herewith Permit No. WQ0002648, dated August 21, 1991, to Luck's, Incorporated for the continued operation of the subject wastewater treatment and spray irrigation disposal system. The capacity of the wastewater treatment system's holding pond has been changed from 350,000 gallons to 588,000 gallons. This is based on Mr. Torn Anderson's October 22, 1990, memo, which reflects a September 1990 evaluation of the holding ponds capacity. The spray application rate has been changed to reflect the application rates recomended in the August 6, 1991, soil scientist report, by Mr. Dennis I - Osborne. This permit shall be effective from the date of issuance until October 31, 1995, 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. Issuance of this permit hereby voids Permit No. WQ0002648 issued November 30, 1990. If any parts, requirements, or limitations contained in this permit are unacceptable to you, you have the right to request an adjudicatory hearing upon written request within 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, P.O. Box 11666, Raleigh, NC 27604. Unless such demands are made this permit shall be final and binding. Pollution Prevention Pays P.O. Box 29535, Raleigh, North Carolina 27626-0535 Telephone 919-733-7015 An Equal Opportunity Affirmative Action Employer If you need additional information concerning this matter, please contact John Seymour at 919/ 733-5083. Sin rely, George T. Evere cc: Randolph County Health Department Winston-Salem Regional Office Groundwater Section Training and Certification Unit Facilities Assessment Unit NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION DEPARTMENT OF ENVIRONMENT, HEALTH AND NATURAL RESOURCES :: s" SPRAY 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 Luck's, Incorporated Randolph County FOR THE continued operation of a 0.3 MGD wastewater treatment and spray irrigation disposal facility to treat the combined sewage and industrial wastes, consisting of aerobic digestion and chlorination facilities for domestic waste pretreatment; wastewater screening, grease removal and aerobic digestion facilities for process waste pretreatment; a 588,000 gallon capacity holding pond to collect the combined waste flow: and an automated spray irrigation system utilizing approximately 40 acres of woodland and grassland for the disposal of the treated wastewater to serve Luck's, Incorporated, Seagrove Plant with no discharge of wastes to the surface waters, pursuant to the application received October 30, 1989, and the request for permit amendment received dated December 10, 1990, 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 issuance until October 31, 1995, and shall be subject to the following specified conditions and limitations: I. PERFORMANCE STANDARDS l . The spray 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 absorb the wastewater, the Permittee shall take such immediate corrective action to correct the problem, including actions as may be required by the Division of Environmental Management. 2, 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. 3. The sludge generated from these treatment facilities must be disposed of in accordance with General Statute 143-215.1 and in a manner approved by the North Carolina Division of Environmental Management. 4. Diversion or bypassing of the untreated wastewater from the treatment facilities is prohibited. II. OPERATION AND.. MAINTENANCE REQUIREMENTS 1. The facilities shall be properly maintained and operated at all times. 2. The Permittee shall employ a certified wastewater treatment plant operator to be in responsible charge of the wastewater treatment facilities. The operator must hold a certificate of the grade at least equivalent to the classification assigned to the wastewater treatment facilities by the Certification Commission. 3. A suitable vegetative cover shall be maintained. 4. Irrigation shall not be performed during inclement weather or when the ground is in a condition that will cause runoff. 5. Adequate measures shall be taken to prevent wastewater runoff from the spray field. 6. 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. 7. The application rate shall not exceed: a) 0.75 inches/ acre/ week, for the month of January b) 0.0 inches/ acre/ week, for the month of December unless documented soil conditions allow c) an average weekly rate (inches/ acre/ week) which does not exceed the rate calculated by the water balance total allowable irrigation per month, for the rest of the year Water balance referenced was prepared by Mr. Dennis J. Osbome in his August 6, 1991 report. S. No type of wastewater other than that from Luck's, Incorporated Seagrove Plant shall be sprayed onto the irrigation area. 9. No traffic or equipment shall be allowed on the disposal area except while installation occurs or while normal maintenance is being performed 10. 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. III. MONITORING AND RE.PQRTING REOUIREMENNJsS Any monitoring (including groundwater, surface water, soil or plant tissue analyses) 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. N 2. Adequate records shall be maintained by the Permittee tracking the amount of wastewater disposed. 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 for each field, f) weather conditions, and g) maintenance of cover crops. year-to-date hydraulic (inches/acre) loadings 3. The effluent from the subject facilities shall be monitored by the Permince at the point prior to irrigation every March, July and November for the following parameters: Parameter DS Magnesium Fecal Coliform Calcium pH Sodium Adsorption Ratio by Calculation NH3 as N 4. Three copies of all operation and disposal records (as specified in condition III 2) and all effluent monitoring data (as specified in condition RI 3) and any other data as may be required shall be submitted on or before the last day of the following month to the following address: NC Division of Environmental Management Water Quality Section Facility Assessment Unit PO Box 27687 Raleigh, NC 27611-7687 5. Noncompliance Notification: The Permittee shall report by telephone to the Winston-Salem Regional Office, telephone no. 919/ 896-7007, 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. Persons reporting such occurrenpes by telephone shall also file a written report in letter form within 15 days following is t 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 The three (3) existing monitor wells must be sampled every March, July, and November for the following parameters: NO2 Na TDS (500.0) TOC pH (6.5-8.5 standard units) Chloride (250.0) Water level SO4 (250.0) 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 "Method For The Determination Of Organic Compounds In Drinking Water", U.S. EPA - 600/4-88/039 The measurement of water level must be made prior to sampling for the remaining parameters. The measuring points (top of well casing) of all new monitoring wells shall be surveyed relative to mean sea level (M.S.L.). The depth of water in each well shall be measured from the surveyed point on the top of the casing. The water level elevations shall then be determined relative to M.S.L. The numbers in parentheses represent the maximum allowable concentrations in groundwater for the various analytical parameters, as specified in 15 NCAC 2L [Groundwater Classifications and Standards]. Unless otherwise noted, the concentrations are given in parts per million. If TOC concentrations greater than 10 rng/l 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 EPA methods 604 and 611 must also be run to detect other organic compounds which may be present. The results of all analyses specified in the monitoring requirements, including 604 and 611 if required, must be submitted simultaneously. The results of the sampling and analysis shall be sent to the N.C. Division of Environmental Management on Form GW-59 (Compliance Monitoring Report Form) every April, August, and December. 2. The Compliance Boundary for the disposal system is specified by regulations in 15 c NCAC 2L, Classifications and Water Quality Standards applicable to the groundwater of North Carolina. An exceedance of Groundwater Quality Standards beyond the Compliance Boundary is subject to penalty provisions applicable under General Statute 143-215.6(1)a. The sale of property, by the Permittee, which is within or contiguous to the disposal system site may alter location of the Compliance Boundary. For facilities permitted prior to December 30, 1983, the Compliance Boundary is established at a distance of 500 feet from the spray irrigation field or the property boundary, whichever is less. For facilities permitted on or after December 30, 1983, the Compliance Boundary is established at the lesser of 250 feet from the spray irrigation field or 50 feet within the property boundary. If the title to any property which may affect the location of the Compliance Boundary is changed, the permittee shall notify the Division Director within 14 days. The Director shall then establish a modified Compliance Boundary which will be done as a modification to the Permit. The REVIEW BOUNDARY for the disposal system is specified by regulations in 15 NCAC 2L, Groundwater Classifications and Standards. A REVIEW BOUNDARY is established around disposal systems midway between the Compliance Boundary and the perimeter of the waste disposal area. When the concentration of any substance equals or exceeds the maximum allowable concentration of that substance at the REVIEW BOUNDARY, as determined by monitoring, the permittee shall either (i) demonstrate, through predictive calculations or modeling, that natural site conditions, facility design and operational controls will prevent a violation of standards at the Compliance Boundary; or, (ii) submit a plan for the alteration of existing site conditions, facility design or operational controls that will prevent a violation of standards at the Compliance Boundary, and implement that plan upon its approval by the Director. 3. The spray irrigation field shall be tested once every four (4) months for sodium content and the results submitted to the Division's Winston-Salem Regional Office. 4. Any additional groundwater quality monitoring, as deemed necessary by the Division, shall be provided. V . INSPECTTQN5 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 of Environmental Management or other permitting authority. E 3. 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 and facility at any reasonable time for the purpose of determining compliance with this permit; may inspect or copy any records that must be kept under the terms and conditions of this permit; or may obtain samples of groundwater, surface water, or leachate. VI. GENERAL CONDITIONS This permit shall become voidable unless the facilities are constructed in accordance with the conditions of this permit, the approved plans, 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. 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. 5. 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. 6. Prior to any transfer of this land, a notice shall be given to the new owner that gives full details of the materials applied at this site. 7. A set of approved plans and specifications for the subject project must be retained by the Permittee for the life of the project. 8. The annual administering and compliance fee must be paid by the Permittee within thirty 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 15 NCAC 2H .0205 (c)(4). 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. 10. Issuance of this permit hereby voids Permit No. WQ0002648 issued April 26, 1988. Permit issued this the 21st day of August, 1991 CAROLINA George T. Everett; Division of Enviro By Authority of the AL MANAGEMENT COMMISSION Management Conunission 6 b wy us T, 1 7 `i f WATER BALANCE Luck's incorporated Seagrove, North Carolina -----------------_----------------------------------------__------------------------_-_______------------------ (1) (2) (3) (4) (5) (6) (7) (8) POTENTIAL TOTAL ALLOWABLE CHANGE IN CUMULATIVE MONTH ET DRAINAGE RUNOFF LOSS PPT IRRIGATION STORAGE STORAGE -------------------------------------------------------------------------------------------------------------- L( 1 )+( 2 )+( 3 ) L( 4 )-( 5 )] [Mean-( 6 )] Jan. 0.93 5.00 .32 - 6.25 3.16 3.09 .06 8.02 Feb. 1.40 5.00 .44 6.04 4.36 2.48 1.47 9.49 Mar. 2.17 5.00 .20 7.37 2.06 5.31 -1.36 8.13 Apr. 3.30 5.00 .26 8.56 2.56 6.00 -2.05 6.08 May 4.34 5.00 .56 9.90 5.58 4.32 - .37 5.71 June 4.80 5.00 .54 10.34 5.44 4.90 - .95 4.76 Ju I y 4.65 5 _00 .35 10.00 3.51 6.49 --2 .54 2. 22 Aug. 4.03 5.00 .42 9.45 4.20 5.25 -1.30 .92 Sept. 3.30 5.00 .46 8.78 4.81 3.97 - .02 ,90 Oct_ 1.86 5.00 .22 7.08 2.23 4.85 - .90 -0- Nov. . 1 .20 5 .00 .61 6.81 6.07 .74 3.21 3.21 Dec. 0.62 5.00 .80 6.42 0.03 -0- 3.95 7.16 TOTAL 52.01 47.40 x = 3.95 F- . � •ram . • • • �• � , ,�. �- \ jj�Jff i I •. I ra �� J. , '.:.'" i^ �\', .i: i ! is i _+ . 1.4 -5 .I 1�a ' %�' s�°I %i °•� l I ra n ot • ple 5 .; --•- Srf �J2 .\� / - �. --- _ 47�• ai�1 . � ,.'� C2m -- - � J _ , - r/ r /J/ "�� Fairview •fl - _ :.� I -•'' 1',Ol;••f! ��__'tr' '�r!'/'', �QICa A'-1d �. 010 _ l 5 �a le (MISCELLANEOUS UNITS CONTINUED) POINTS (c) Holding Pond for Effluent Flow Equalization and/or Stage Discharge . . . . . . . . . . . . . . . . . 5> d Effluent Pumps . . . . . . . . . . . . . . . c In -Plant Puwps (including air lifts). . . . . . . . 2 f Stand -By Power Supply . . . . . . . . . . . . . . . 3 g Thermal Pollution Control Device . . . . . 3 h Treatment Processes for Removal of Metal or Cyanide and ;other Toxic Materials . . . . . . . . . . . . . . . 30 Total Points 2-3 CLASS I FI CAT ION gI ass 1 • • • • • • . 5 - 25 Points Class 11 . . . . . . . . . . . . . . . 26 - 50 Points Class III . . . . . . . . . . . . . . . 51 - 65 Points Class IY . . . . . . . . . . . . 66 Up Points Facilities having a rating of one through four points, inclusive, do not require a certified operator. Classification of all other facilities requires a comparable grade operator in responsible charge. s— - L � 4 C' M� -4- till, aa J1 n �. -(J ?forth Caro) i na ,h Division of Envirorvnental Kanagem nt ' Checklist of Facility Components To be Used in Determing Facility Classification All information will -be printed: Name of Plant I, C_ S County �10 Owner or Contact Person Mailing Address 9 0 40 L Al Street or ox No. Imo br City Lip Permit Number Information Construction Status r - NPUES Permit No. Please Check; Existing Facility Date Issued Upgraded Facility _ New Facility State Permit No. VUGCIC'O Z6yg If Upgraded or Hew —Facility, 50% Caopletion Date Date Issued 11Z 1005 Completion Date Rated by I n r Regional Office - C Ph� fO _Date l Operator in Responsible Charge Grade Design Flow of Plant in GPD Plant Class ITEM POINTS �1} PRETREATMENT UNITS (see definition No. 34) 2 2) DESIGN FLOW OF PLANT IN GPD (not applicable to non - contaminated cooling waters and non -discharging systems) 0 -- 211,000 . . . . . . . . . . . . . . . . . 1 20,001 -- 5G,000 . . . . . . . . . . . . . . 2 50,001 -- 100,000 . . . . . . . . . . . . . . . . . . 3 100,001 -- 250,000 . . . . . . . . . . . . . . . . . 4 250,001 -- 500,000 . . . . . . . . . . . . . . . 5 5D0,001 -- 1,000,000 . . . . . . . . . . . . . . . . . . B 1,000,001 -- 2,000,000 . , . . . . . . . . . . . 10 2.000,001 (and up) - rate 1 point additional for each 200,000 GPD capacity up to a maximcun of . . . 10 Design Flow (GPD): (3) PRELIMINARY UNITS (set deflnition No. . . . . . . . .. (a) Influent Pumps (including air lift) . . . . . . . . . 3 b Bar Screens I or (c) Mechanical Screens, Static Screens or Cominuting Devices . . . . . . . . . . . . . . . . . . . . 2 d) Grit Removal or • • . • • • • . • 1 e) Mechanical or Aerated Grit Removal 2 f) Flow Measuring Device or . . . . . . . . . . . . . . 1 (g) Instrumented Flow Measurement . . . . . . . • • • . 2 Effective 7/1/83 1 (4) (5) (6) ITEM POINTS hj Preaeration or Equalization . . . _ . . . . . 1 i} Grease or Oil Separators -- Gravity . . . . . . (�3 Mechanical. . . . . . . 3 Aerated . . . . . . . . 5 {j) Chemical Conditioning . . . . . . . . . . . . . . . 5 PRIMARY TREATMENT UNITS a Septic Tank (see definition No. 44) . . . . . . . . 2 b Imhoff Tank , , 3 c Primary Clarifiers (including sludge air lifts) . . 5 d Settling Ponds or Settling Tanks for Inorganic Nan - Toxic Materials Involving a Discharge to the Surface waters (sand, gravel, stone, and other mining operations except recreational activities such as gem or gold ni ni ng) . . . . . . . . . . . . . . . .. 10 SECONDARY TREATMENT UNITS (a) Carbonaceous Stage (i) Aeration - High Purity Oxygen System Diffused Air System . . . .". . . . . . D Mechanical Air System (fixed, floating or rotor) Separate Sludge Reaeration . . . . . 3 (it) Trickling Filter - High Rate . . . . . . . . 7 Standard Rate . . . . . . 5 Packed Tower . . . . . . . 5 (III) Aerated Lagoons . . . . . . . . . . . . . 10 (iv Rotating Biological Contactors (biodisc). . . 10 (v Sand Filters (intermittent biological) . . . 2 (vi Stabilization Lagoons with Outlet to Stream . 5 {vii Clarifier (including sludge air lifts). . . . 5 (b) Hitrogenous Stage (1) Aeration - High Purity Oxygen System. 20 Diffused Air Systems. . 10 Mechanical Air System (fixed, floating, or rotor)8 separate Sludge Reaeration . . . . . . . . . 3 (it) Trickling Filter - High Rate . . . . . . . . 7 Standard Rate . . . . . . 5 Packed Tower. . . 5 (1i1) Rotating Biological Contactors (biodisc) . . 10 (iv Sand Filter (intermittent biological). . . . 2 (v Clarifier {including sludge air lifts) . . . 5 TERTIARY OR ADVANCED TREATMENT UNITS (a) Activated Carbon Beds - Without Carbon regeneration 5 With Carbon regeneration. 15 (b) Powdered or Granular Activated Carbon Feed - Without Carbon regeneration 5 With Carbon regeneration. 15 c) IV—nia Stripping . . . . . . . . . . . . . . . . 18 d Chemical Additions . . . . . . . . . . . . . 5 e Dent trification Process (separate process). . . . 10 fl Electrodialysis . 5 91 Foam Separation . . . . . . . 5 . . . . e hJ Ion Exchange . . . . . . . . . . . . . . . . . 5 -2- ITEM POINTS {i) Land Application (see definition No. 23b) . . . . . 5i (not applicable for facilities under 10(a) . . . , J) Microscreens . . . . . . . . . . . . . . ... 5 k Phosphorus Removal . . . . . . . . . . . . . . . 20 Polishing Ponds- Without aeration . . . . . . . . 2 With aeration . . . . . , , . . . 5 (m) Post Aeration - Cascade . . . . . . . . 0 Diffused or Mechanical . . . . 5 (n) Pre -Package Unit for Removal of 011 and Grease 30 (o) Reverse Osmosis 5 (p) Sand or Mixed -Media Filters -- Low Rate . . . . . . 2 High Rate 5 (7) SLUDGE TREATMENT (a) Sludge Digestion Tank -- heated . . . . . . _ . . . 10 Aerobic . . _ . . . . . . 5 Unheated . . . . 3 b} Sludge Stabilization {chemical or thermal} . . , . 10 c) 5ludge Drying Beds . . . . . . . . . . . . . . . . 2 dl Sludge Elutriation . . . . . . . . . . . . . . 5 e Sludge Conditioner (chemical or thermal) . . _ . . 5 f) Sludge Thickener . . . . . . . . . . . . . . . . . 2 4 Sludge Gas Utilization (including gas storage), . . 2 h Sludge Holding Tank -- Aerated . . . . . . . . . . 5 Nan -aerated . . . . . . 2 (i) Sludge Incinerator (not includin activated carbon regeneration . . . . . . 10 (j) Vacuum Filter, Centrifuge or Filter Press . . . . 10 (8) SLUDGE DISPOSAL (including Incinerated ash) (a) Lagoons . . . . . . . . . . . . . . . . . 2 b Land Application (surface and subsurface) (see def. 23a ) . . . . . . . . . . . . . 10 (c) Landfilled (burial) . . . . . . . . . . . . . . . 5 (9) DISINFECTION a Pre . . . . . . . . . . . . . . . . . . . . . . . I b Intermediate . . . . . . . . . . . . . . . . . . 2 c� Past . . . . . . . . . . . . . . . . . . . . . . ('3) d Dechlorination. . . . . . . . . . . . . . . 5 e) Chlorine or Ozone Generation . . . . . . . . . . 5 f) Radiation . . . . . . . . . . . . . . . . . 3 (10) MISCELLANEOUS UNITS (a) Holding Ponds or Holding Tanks for Inorganic, Hon -toxic Materials with no Discharge to the Surface Waters 2 (Sludge handling facilities for water purification plants, sand, gravel, crushed stone and other similar operations --see definition No. 10) (b) Holding Ponds or Holding Tanks for Organic or Toxic Materials with no Discharge to the surface Waters 4 (Any pump, valve, or other mechanical control subject to failure creating a potential for bypass or discharge from the holding ponds or tanks will necessitate a minimum classification of Class I requiring a certifled operator). Ke