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HomeMy WebLinkAboutWQ0004240_Final Permit_19910517�* 3p, State 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 May 17, 1991 Mr. J. Clark, Director of Facilities Marine Corps Auxiliary Landing Field Bogue MCAS, Building 198, Stop 1 Cherry Point, NC 28533•-5001 George T. Everett, Ph.D. Director Subject: Permit No. WQ0004240 U. S. Marine Corps MCALF Bogue Field Spray Irrigation Disposal System Carteret County Dear Mr. Clark: In accordance with your application received October 8, 1990, we are forwarding herewith Permit No. WQ0004240, dated May 17, 1991, to the U. S. Marine Corps for the continued operation of the subject facility. This permit shall be effective from the date of issuance until April 30, 1996, shall hereby void Permit No. 6338R2 issued April 10, 1986, 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 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. Drawer 27447, Raleigh, NC 27611-7447. Unless such demands are made this permit shall be final and binding. If you need additional information concerning this matter, please contact Mr. Lindsay L. Mize at 919/ 733-5083. Mm cerely, George T. E Carteret County Health Department Wilmington Regional Office Groundwater Section Training and Certification Unit Facilities Assessment Pollution Prevention Pays P.O. Box 29535, Raleigh, North Carolina 27626-0535 'Telephone 919-733-7015 An Equal opportunity Affirmative Action Employer NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION DEPARTMENT OF ENVIRONMENT, HEALTH AND NATURAL RESOURCES RALEIGH 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 U. S. Marine Corps Carteret County continued operation of a 0.003 MGD spray irrigation system consisting of a treatment lagoon, polishing pond, chlorination facility, a 106 GPM spray pump, approximately four (4) acres of spray field, and associated pipes, valves, sprinkles, and fittings to serve the Bogue Marine Corps Auxiliary Landing Field with no discharge of wastes to the surface waters, pursuant to the application received October 8, 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 April 30, 1996, and shall be subject to the following specified conditions and limitations: 1. PERFORMANCE STANDARDS 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. i 5. The following buffers shall be maintained (existing facilities may be exempt): a) 400 feet between wetted area and any residence 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 drainageways or surface water bodies, e) 50 feet between wetted area and public right of ways, f) 100 feet between wastewater treatment units and wells, g) 50 feet between wastewater treatment units and property lines. II. QPERATIQN 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 of the wastewater treatment facilities. The operator must hold a certificate of the type and grade at least equivalent to the classification assigned to the wastewater treatment facilities by the Certification Commission. Once the facility is classified, the Permittee must submit a letter to the Certification Commission which designates the operator in responsible charge. 3. A suitable vegetative year round 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 one (1) inch/acre/week. 8. No type of wastewater other than that from Bogue Marine Corps Auxiliary Landing Field 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. M NITQRING AND REPORTING REQUIREMENTS 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. 2 2. Adequate records shall be maintained by the Perznittee tracking the amount of was .,pter 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 year-to-date hydraulic (inches/acre) loadings for each field, f) weather conditions, and g) maintenance of cover crops. 3. The effluent from the subject facilities shall be monitored by the Permittee at the point prior to irrigation at the listed frequency for the following parameters: Parameter Frequency BOD5 every March, July, and November TSS every March, July, and November PH Daily (report submitted April, August, and December) Flow Daily (report submitted April, August, and December) Sodium Adsorption Ratio (by Calculation) every March, July, and November NH3 as N every March, July, and November Fecal Coliform every March, July, and November 4. Three copies of all operation and disposal records (as specified in condition III 2) and all effluent monitoring data (as specified in condition III 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 29535 Raleigh, NC 27626-0535 5. Noncompliance Notification: The Permittee shall report by telephone to the Wilmington Regional Office, telephone no. 919/395-3900, 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 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 bypass directly to receiving waters without treatment of all or any portion of the influent to such station or facility. 3 d. Any time that self -monitoring information indicates that the facility has gone out of ' compliance with its permit limitations. Persons reporting such occurrences by telephone shall also file a written report in 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 two (2) wells indicated on the attached map, designated to be abandoned, shall be abandoned in accordance with the Well Construction Standards (15A NCAC 2L). 2. Within 90 days of permit issuance, two (2) additional monitor wells as indicated on the attached map, shall be constructed such that monitor wells, upgradient and downgradient, shall be installed to monitor groundwater quality. The well(s) shall be constructed such that the water level in the well is never above or below the screened (open) portion of the well at any time during the year. However, the exact location and construction details for these wells shall be approved by the Wilmington Regional Office, from which a well construction permit must be obtained. 3. The three (3) monitoring wells shall be sampled (initially after construction for the two new wells) every March, July, and November for the following parameters: NO3 (10.0) Ammonia Nitrogen TDS (500.0) TOC pH (6.5 - 8.5 Standard Units) Water Level Chloride (250.0) Fecal Coliforms (1/100ni1) TSS (Total Suspended Solids) Volatile Organic Compounds - In November only (by Method l or Method 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 level must be made prior to sampling for the remaining parameters. The measuring points (top of well casing) of all monitoring wells shall be surveyed to provide relative elevations of the measuring point for each of the monitoring wells. The depth of water in each well shall be measured from the surveyed point on the top of the casing. 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 specified, the units for these concentrations are expressed as milligrams per liter. 2 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(1, 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. 4. The Compliance Boundary delineated on the attached site map for the disposal system is specified by regulations in 15A NCAC 2L, Groundwater Classifications and Standards. An exceedance of Groundwater Quality Standards beyond the Compliance Boundary is subject to the penalty provisions applicable under General Statute143-215.6(1)a. The sale of property, by the Permittee, which is within or contiguous to the disposal site, may alter the location of the Compliance Boundary_ For facilities permitted prior to December 30, 1983, the Compliance Boundary is established at the lesser of 500 feet from the lagoon and spray field, or the property boundary, whichever is less. If the title to any property which may affect the location of the Compliance Boundary is changed, the Perminee shall notify the DEM 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 delineated on the attached site map 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. 5. Any additional groundwater quality monitoring, as deemed necessary by the Division, shall be provided. V . INSPECTIONS Adequate inspection, maintenance, and cleaning shall be provided by the Permittee to insure proper operation of the subject facilities. 5 2. The Permittee or his designee shall inspect the aastewater treatment and disposal facilities to prevent malfunctions and deterioration, 3Vrator 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 Permittec 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. 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 1. 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 vrarranted, 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. 6338R2 issued April 10, 1986. Permit issued this the 17th day of May, 1991 CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION 11��x L-teo�rgaeT. Everett, it Division of Environ e By Authority of the En PERMIT NO. WQ0004240 Management Commission 7 !3OGDE SOUND Q� 100, .000, Drinking Wa t r I I Proundr� er ��oni for i ng We S < �ERIM�T�►Z of � C ' ation Fiejd. I -le I i s �—Stor e SuiZJ\n 1 1 t Wasteara Treatment Lago f - Xo �r 1 PEP',rA�-rg R e� !0 �E�,�w 19 Man��oriL we�� �b 1� a�Da�nc�o ne� Q exis �;n� rN pn A.ri+'� Wel` �r,C) cl new moT.;kos;n� well ej ffi r ~ O L✓"" P a z w d ti V. C `•' a 4 �� 41 a Q Q 135' 2 a p o �.L• d o e� ;•5 o Sch 3• 42'-7 a,p tn *a 3 d 11 y MN O ti d 6 � +y 23 •., .m d i • r � Cal A. C N +-/, 4 4 3142 M 25 a • •1 . � p«�"= • / , r- � .'Fireb�esk I ft 2AQ • ��� 31341 Da y4 Co j /' s _ •a° - ii 5 +Humphrey pt Taylor �4 �; t Bay _ (C w, Guge thrie Dayheaco e tip••-r uMree J �p2 I k V \ ' and )� ''•. s 1 ✓z '+ Dsy6eacana,, t� � g �Fp — f6 {C) T S O Piney Point i Lang arch, ! l %Archer r !yam + 4 ; ;Pt Tj B�- Plum {C 2a �O -0(0) ). . $ SWANSBORO QUADRANCLE + ® - NORTH CAROLINA ' �` _ �' r j., ti• —: sa 7.5 MINUTE SERIES (TOPOGRAPHIC, �} © - NE/4 SWANSE30RO 15' QUADRANGLE -2- 1952 PHOTOREVISED 1971 AMS 5553 11 NE --SERIES V842 (MIS£FLLANECUS UNITS CONTINUED) POINTS (c) Holding Pond for Effluent flow Equalization and/or Stage Discharge . . . . . . . . . . . . . . . . . . (tf) Effluent PulupS . . . . . . . (e) In -Plant Pumps (including air lifts). . . . . . . _ 2 (f) Stand-Dy 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 CI A':S1(i CAT ION Class I . . . . . . . . . . . . . . . . 5 - 25 Points Class II . . . . . . . . . . . . . . . 26 - 50 Points Class III . . . . . . . . . . . . . . . 51 - 65 Points Class IV . . . . . . . . . . . . . . . fi6 - 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. .4 North Carolina Division of Environmental Management Checklisl. of Facility Components To be Used In Determing Facility Classification All information will be printed: H ime of Plan" County _ y II_ ACrwter Llvner or Contact Person �1. (ZZAAi(— ;y e ephone Mailing Address CAS, pA148-SAe 1 e y /rPiwrj t8a 3'30[sl Street or P.O, ox No. I Town or City Zip Permit Number Information Construction Status NPOES Permit No. Please Check: Existing Facility 1/ Date Issued _ Upgraded Facility ` New Facility State Permit No. &) 000�2D If Upgraded or New Facility, Give: 50% Completion Date Date Issued 100% Completion Date Rated by _D_ .__ --Regional Office � Date Operator in Responsible Charge�'e 411Qm/04y Grade R Design Flow of Plant in GPD Z010,3 Plant Class —�- ITE+I 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 -- 20,000 . . . . . . . . . . . . . _ . . . 20,001 -- 50,000 . . . . . . . . . . . . . . . . . 2 50,OOI -- 100,000 . . . . . . . . . . . . . . . . . 3 100,001 -- 250,000 . . . . . . . . . . . . . . . . . . 4 250,001 -- 500,000 . . _ . . . . . . . . . . . _ _ . . 5 500,001 -- 11000,000 _ . . . . . . . . a 1,000,001 -- 2,000,000 . . . . . . 10 2,000,001 (and up) - rate I point additional for each 200,000 G90 capacity up to a maximum of 30 Design Flow (GPO): (3) PRELIMINARY UNITS (see de inition No. 35) . . . . . . . ._ a) Influent Pumps (including air lift) 3 ° b) gar Screens . . . . . . . . . . . . . . . . . . . . . I or (c) Mechanical Screens, Static Screens or Comminuting Devices . . . . . . . . . . . . . . . . . 2 (d) Grit Removal or . . . . . . . . I (a) Mechanical or Aerated Grit Removal . . . . . . . . . 2 (f) Flow Measuring Device or . . . . . . . . . . . . . . I (g) Instrumented Flow Measurement . . . . . . . 2 Effective 7/1/83 -1_ (4) (5) (o) ITEM POINTS ITEM POINTS (h) Preaeration or Equalization . . . . . . . _ . . 1 (i) Land Application (see definition No. 23b) 5 (i) Grease or Oil Separators -- Gravity . . . . . . . . 2 (not applicable for facilities under 10(a) . . . . Mechanical. . . . . . . 3 Microscreens . . . . . . . . . . . . ... . . . 5 Aerated . . . . . . . . 5 (k) Phosphorus Removal _ . . . . . . . 20 (j) Chemical Conditioning . . . . . . . . . . . . . . . 5 (7) Polishing Ponds- Without aeration. . . . . . . . 2 PRIMARY TREATMENT UNITS With aeration . . . . . . . . . . 5 (a) Septic Tank (see definition No. 44) . _ _ . . . . . 2 (M) Post Aeration - Cascade . . .. . . . . . . . . . . 0 (b) Imhoff Tank . . 3 Diffused or Mechanical _ . . . . . 5 (c) Primary Clarifiers (including sludge air lifts) S (n) Pre -Package Unit for Removal of Oil and Grease _ 30 (d) Settling Ponds or Settling Tanks -for Inorganic Non- (o) Reverse Osmosis . . . . . . . _ . . . . . .. 5 Toxic Materials Involving a Discharge to the Surface (p) Sand or Mixed -Media Filters -- Low Rate .. ? waters (sand, gravel, stone, and other mining operations :Sigh Rate 5 except recreational activiLies such as gem or gold (7) SLUDGE TREATMENT mining). . . . . . . . . . . . . . . . . .. LO (a) Sludge Digestion Tank -- Heated . . . . . 10 SECONDARY TREATMENT UNITS ;aerobic . _ . . . . . . . 5 (a) Carbonaceous Stage Unheated . . . . . . . 3 0 ) Aeration - High Purity Oxygen System . . . . 20 (b) Sludge Stabilization (chemical or thermal) . . . . 10 Diffused Air System . . . . . . . . . . . . . 10 (c) Sludge Drying Beds . . . . . . . . . . . . . . . . 2 Mechanical Air System (fixed, floating or rotor) 8 (d) Sludge Elutriation . . . . . . . . . . . . 5 Separate Sludge Reiteration . . . . . . . . 3 (e) Sludge Conditioner (chemical or thermal) . . . . . 5 (ii) Trickling Filter - High Rate . . . . . _ 7 (f) Sludge Thickener . . . . . . . . . . . 2 Standard Rate . . . . _ 5 (g} Sludge Gas Utilization (including gas storage). . . 2 Packed Tower . . . . . _ _ 5 (h) 4ludge Holding Tank -- Aerated . . . . . . . . . . 5 (iii) Aerated Lagoons . . . . . . . . . . . . 10 Non -aerated . . . . . _ 2 (iv) Rotating Biological Contactors (biodisc). _ . 10 (i) Sludge Incinerator (not including activated carbon (v) Sand Filters (intermittent biological) . . . 2 regeneration) . . . . . . . . 10 (vi) Stabilization Lagoons with Outlet to Stream . 5 (j) Vacuum Filter. Centrifuge or- Filter Press . . . . 10 (4ii) Clarifier (including slurigo air lifts)_ . . . 5 (8) SLUOCE DISPOSAL (including incinerated ash) (b) Nitrogenous Stage (a) Lagoons . _ . . . . . . . . . . . . . . . . 2 (i) Aeration - high Purity Oxygen System. 20 (b) Land Application (surface and subsurface) (see def. Diffused Air Systems. . . . . . . . . . . . . 10 ?3a) . . . . . . . . . . . . . 10 Mechanical Air System (fixed, floating, or rotor)8 (c) Landfilled (burial) . . . . . . . . . . . . . . . 5 Separate Sludge Reaeration . . . . . . . 3 (9) OISINFECTION (ii) Trickling Filter - 16911 Pate . . . _ . . . . 7 (a) Pre . . . . . . . . . . . . . . . . . . . . 1 Standard Rate . . . . . . 5 b) Intermediate . . . . . . . . . . . . . . . . Packed Tower. . _ 5 (c) Post . . . . . . . . . . . . . . . . . . (iii) Rotating Biological Contactors (biodisc) . . 10 (d) Dechiorination. . . . . . . . . . . . . . . . . . 5 (iv) Sand Filter (intermittent biological) . . . 2 (e) Chlorine or Ozone Generation _ . . . . . . . . . 5 (v) Clarifier (includirtin sludge air lifts) . . . 5 (f) Radiation . . . . . . . . . . . . . . . . . . 3 TERTIARY OR ADVANCED TREATMENT UNITS (10) MISCELLRNEOUS UNITS (a) Activated Carbon Beds - Without Carbon regeneration 5 (a) Holding Ponds or Holding Tanks for 6norganic, Non -toxic With Carbon regeneration. 15 Materials with no Discharge to the Surface Raters 2 (b) Powdered or Granular Activated Carbon feed - Without (Sludge handling facilities for water purification Carbon regeneration 5 plants, sand, gravel, crushed stone and other sinilar With Carbon regeneration. 15 operations --see definition No. 10) (c) Arrmnia Stripping . . . . . . . . . . . _ . . . . 18 (b) Holding Ponds or Holding Tanks for Organic or Toxic (d) Chemical Additions . _ _ . . . . . . . 5 Materials with no Discharge to the surface 'paters 4 (e) Denitrification llirocess (separate process). . _ _ iO (Any pump, valve, or other mechanical control subject. (f) Electrodialysis . . . . . . . . . . . . . . . . . 5 to failure creating a po[Cn[ial for bypass or- discharge (g) Foam Separation . . . _ . . . . . . . _ . . . . 5 from the holding yonds or Canks will necr'ssitate a (h) Ian Exchange. . . . _ _ . _ . . . . . . . . . . 5 minimum classification of Class i requiring a certified operator). -3-