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HomeMy WebLinkAboutWQ0006462_Final Permit_19930402State of North Carolina Department of Environment, Health and Natural Resources Division of Environmental Management 512 North Salisbury Street • Raleigh, North Carolina 27604 James B. Hunt, Jr., Governor April 2, 1993 Jack R. O'Leary Union Camp Corporation Highway 58 Franklin, Virginia 23851 Jonathan B. Howes, Secretary Subject: Permit No. WQ0006462 Union Camp Corporation Union Camp Sawmill - Seaboard, N.C. Wastewater Spray Irrigation Northampton County Dear Mr. O'Leary: In accordance with your application received May 6, 1992, we are forwarding herewith Permit No. WQ0006462, dated April 2, 1993, to the Union Camp Corporation for the construction and operation of the subject wastewater collection, treatment and disposal system. This permit shall be effective from the date of issuance until March 31, 1998 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. Regional Offices Asheville Fayetteville Mooresville Raleigh Washington Wilmington Winston-Salem 704/251-6208 919/486-1541 704/663-1699 919/571-4700 919/946-6481 919/395-3900 919/896-7007 Pollution Prevention Pays P.O. Box 29535, Raleigh, North Carolina 27626-0535 Telephone 919-733-7015 An Equal Opportunity Affirmative Action Employer One set of approved plans and specifications is being forwarded to you. If you need additional information concerning this matter, please contact)&. Michael D. Allen at (919) 733-5083. Sincerely, A. Prest Howaldr.�, P.E. Director cc: Northampton County Health Department Raleigh Regional Office, Water Quality Raleigh Regional Office, Groundwater Groundwater Section, Jack Floyd Training and Certification Unit Facilities Assessment Unit Dewberry & Davis 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 Union Camp Corporation Northampton County "R• _yl construction and operation of a 6,300 GPD spray irrigation disposal system consisting of approximately 160 linear feet of 6-inch gravity sewer, approximately 182 linear feet of 8-inch gravity sewer, a 5 HP pump station with duplex pumps, high water alarms and approximately 1,660 linear feet of 4-inch force main, a 2.7 HP pump station with duplex pumps, high water alarms and approximately 18 linear feet of 4- inch force main, a 240,000 gallon storage lagoon, dual 25 HP irrigation pumps, nine (9) sprinkler heads, a 2.6 acre sprayfield and all associated valves, piping and appurtenances a to serve the Union Camp Sawmill in Seaboard, N.C. with no discharge of wastes to the surface waters, pursuant to the application received May 6, 1992, and in conformity with the project plan, specifications, and other supporting data subsequently Bled 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 March 31, 1998 and shall be subject to the following specified conditions and limitations: 1. 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. Mail the Certification to the Permits and Engineering Unit, P.O. Box 29535, Raleigh, NC 27626-0535. 2. The Raleigh Regional Office, phone no. (919) 571-4700 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. 3. 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'Pemiittee shall take such immediate corrective action to correct the problem, including actions as may be required by the Division of Environmental Management. 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 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. 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 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. 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 each Class I facility at least weekly and each Class 11, III, and IV facility at least daily, excluding weekends and holidays, and must properly manage and document daily operation and maintenance of the facility and must comply with all other conditions of Title 15A, Chapter 8A, .0202, Once the facility is classified, the Permittee must submit a letter to the Certification Commission which designates the operator in responsible charge within thirty days after the wastewater treatment facilities are 50% complete. 3. A suitable vegetative cover of fescue shall be maintained. If this grass fails to provide an adequate cover by the second year of operation, the permittee is to replant the sprayfield to a different cover crop better suited to the situation. 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. 2 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 average annual weekly application rate shall not exceed 0.62 inches at an instantaneous application rate not to exceed 0.004 inches per hour. 8. No type of wastewater other than that from the Union Camp Sawmill in Seaboard, N.C. 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. 11. Prior to spray irrigation, the entire sprayfield site as well as a 25 foot wide strip around the perimeter shall be chisel plowed in two directions, 90 degrees apart. The area shall be chisel plowed a minimum of 15 inches deep, but preferably 18 to 20 inches deep. Future chisel plowing may also be necessary after the system is started up, once the cover crop is established. III. MONITORING AND REPORTING RMUIREMENTS 1. 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. 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 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 every April, August and December for the following parameters: BOD5 TS S Calcium pH NH3 as N Sodium Magnesium Sodium Adsorption Ratio by Calculation 3 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 Raleigh Regional Office, telephone no. (919) 571-4700 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 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. Prior to beginning waste disposal operations, three (3) monitor wells, one (1) upgradient and two (2) downgradient, shall be installed to monitor groundwater quality. The wells 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. The exact location of these wells shall be approved by the Raleigh Regional Office and shall be constructed in accordance with the conditions of this permit. 0 2. The three (3) monitor wells must be sampled initially after construction and thereafter every April, August and December for the following parameters: NO3 Chromium TOC pH Ammonia Nitrogen Chloride Copper Total Suspended Solids Water Level Total Dissolved Solids Arsenic Phenol (per EPA Method 604) Volatile Organic Compounds - (in December only by Method 1 or 2 below) Method 1: Method 6230D (Capillary - Column), "Standard Methods for the Examination of Water and Wastewater", 17th edition, 1989 Method 2: Method 502.2 "Methods for the Determination of Organic Compounds in Drinking Water", United States Environmental Protection Agency - 600/4-88/039 The measurement of water level must be made prior to sampling for the remaining parameters. The depth of 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 relative elevations of the measuring point for each of the monitoring wells. 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. The results of the sampling and analysis shall be sent to the N.C. Division of Environmental Management, P.O. Box 29535, Raleigh, N.C. 27626-0535 on Form GW- 59 (Compliance Monitoring Report Form) every May, September and January. 3. All wells that are constructed for the purposes of groundwater monitoring shall be constructed in accordance with 15A NCAC 2C .0108 (Standards of Construction for Wells Other Than Water Supply) and any other state and local laws and regulations pertaining to well construction. 4. The Raleigh Regional Office, telephone number (919) 571-4700 shall be notified at least forty-eight (48) hours prior to the construction of any monitoring well so that an inspection can be made of the monitoring well location. 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. 5 5. Within sixty (60) days of completion of all monitoring wells, the permittee shall submit two original copies of a scaled topographic map (scale no greater than 1:24,000) signed and sealed by a professional engineer or a state licensed land surveyor that indicates all of the following information: a. the location and identity of each monitoring well, b. the location of the waste disposal system, c. the location of all property boundaries, d, the latitude and longitude of each monitoring well, e. the relative elevation of the top of the well casing (which shall be known as the "measuring point"), f. and the depth of water below the measuring point at the time the measuring point is established. All monitoring well locations and elevations shall be surveyed by a state licensed land surveyor. 6. Upon completion of all well construction activities, a certification must be received from a professional engineer certifying that the monitoring wells are located and constructed in accordance with the Well Construction Standards (15A NCAC 2C) and this permit. This certification should be submitted with copies of the Well Completion Form (GW-1) for each well. Mail this certification and associated GW-1 forms to the Permits and Compliance Unit, Groundwater Section, P.O. Box 29535, Raleigh, N.C. 27626-0535. 7. For the initial sampling of the well as specified elsewhere in the permit, the permittee shall submit a copy of the GW-1 form with the Compliance Monitoring Form (GW-59) for that well. Compliance Monitoring Forms that do not include copies of the GW-1 form will be returned to the permittee without being processed. Failure to submit these forms as required by this permit may result in the initiation of enforcement activities pursuant to N. C. General Statutes 143-215.6. Any additional groundwater quality monitoring, as deemed necessary by the Division, shall be provided. 9. The interior surfaces of the lagoon shall be completely lined with a 36-mil thick Hypalon liner. Following installation and inspection of the lagoon liner, and prior to waste disposal operations, certification of the liner's compliance with approved construction specifications and the liner's integrity must be provided to the Division of Environmental Management, Groundwater Section, by the project engineer. 10. Thepliance Boundary for the disposal system is specified by regulations in 15 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. For facilities permitted on or after December 30, 1983, the Compliance Boundary is established at the lesser of 250 feet from the lagoon and sprayfield, or 50 feet within the property boundary. Any sales or transfer property which affects the location of the compliance boundary shall be reported immediately to the Director. The permittee shall not transfer land within an established compliance boundary unless the permittee has satisfied all the requirements of 15A NCAC 2L .107 (e and f). C 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. 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. 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 tirne 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 CQNDITIONS 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 143-215.6A to 143-215.6C. 7 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. A set of approved plans and specifications for the subject project must be retained by the Permittee for the life of the project. 7. 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 211.0205 (c)(4). 8. 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 2nd day of April, 1993 NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION A. Preston Ho ard, Jr., P.E., Director Division of Enonmental Management By Authority of the Environmental Management Commission Permit Number WQ0006462 Permit No. WQ0006462 April 2, 1993 Engineer's Cerfification 1, , 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 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 the approved plans and specifications. Signature Date Q Registration No. fit A LZ'111 /^OPP �•.� rans am/ : ✓ /�-V�.'� �v6D VA 139 Elm `�, 1. _ _ •'��/ �. £RHO / .•-- ,.• 4 (JAGKSOf4) 282 283 25' 284 3 2 a70 00O FEET ;N. C.}, 2&5DDft E. • INTERIOR -GEOLOGICAL SUFM 5556 !V NW ' SCALE 1:2• 000 NLE lQ 0006442- ROA D C LA X!' 3LC:) ;U:w, 50'1O 5700 7000 FEET /R I'*, Camp Cori. )UR INTERVAL 10 FEE1 r �o 5Pmy Sit? 1 5 REPRESENT 5.�00T CONTOURS S- .- MDETIC VERTICAL DATUM OF 1929 i...- f VIRGINIA . '. SuJ �—CLAR 'tT+s NATIONAL MAP ACCURACY STANDARDS QUADRANGLE LOCATION SW/4 A -OGtCAL SURVEY, RESTON, VIRGINIA 22092 Revisions shown in purple comp;led in cooperation with Commonwealth iAL ' ,OURCES, CHARLOT i ESVILLE, VIRGINIA 22093 of Virginia agencies from aerial photographs taken 1982 and other 'HIC SAND SYMBOLS IS AVAILABLE ON REQUEST source data. This information not field checked- Map edited 1986 DMA RATING SCALE FOR CLASSIFICATION OF FACILITIES Name of Plant: 1410N CAMP CaRPatz 6sj Owner or Contact Person: UAcx R. d' LEb&y Mailing Address: Ntc.NwA4 S'8 FRA,r4v-,, ti 1/1A61r4 W 239S t County: ar-roA► irew Telephone: {8t54} 5A- 415(o3 NPDES Permit No. NCOO Nondisc. Per. No.W&noo44roz IssueDate: Expiration Date: 3 31-93 Existing Facility New Facility we - Rated By:_M,tcw►eL Date: 3 ` 36 --93 Reviewed (Train. & Cert.) Reg. Office_ Reviewed (Train. & Cert.) Central Office ORC Plant Class: (circle one) 0 ITEM POINTS (1) Industrial Pretreatment Units and/or Industrial Pretreatment Program (see definition No. 33) 4 (2) DESIGN FLOW OF PLANT IN GPD (not applicable to non -contaminated cooling waters, sludge handling facilities for water purification plants, totally closed cycle systems (def. No. 11), and facilities consisting only of Item (4) (d) or Items (4) (d) and (11) (d}� 0 -- 20,000.......................... Q 20,001 •- 50,000.......................... 2 50,001 100,000.......................... 3 100,001 - 250,000.......................... 4 250,001 -- 500,000.......................... 5 500,001--1,000,000.......................... 8 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 maximum of 30 Design Flow (gpd) : (3) PRELIMINARY UNITS (see definition no. 32) (a) Bar Screens ................................ or (b) Mechanical Screens, Static Screens or Comminuting Devices ........... ............. (c) Grit Removal ............................... or (d) Mechanical or Aerated Grit Removal .. , ... , ... . (e) Flow Measuring Device ....................... or (f) Instrumented Flow Measurement .............. (g) Preaeration ................................ 2 1 2 1 2 2 (h) Influent Flow -Equalization ................... 2 (i) Grease or Oil Separators - Gravity .......... 2 Mechanical.......... 3 Dissolved Air Flotation. 8 G) Prechlorination .............................. 5 (4) PRIMARY TREATMENT UNITS (a) Septic Tank (see definition no. 43) .............. 2 (b) Imhoff Tank .................................. 5 (c) Primary Clarifiers ... ....................... 5 (d) Settling Ponds or Settling Tanks for inorganic Nontoxic Materials jsludge handling facilities for water purification plants, sand, gravel, stone, and other mining operations except recreational activities such as gem or gold mining) ...................................... O2 Grade 11 111 IV Total Points (5) SECONDARY TREATMENT UNITS (a) Carbonaceous Stage (i)Aeration - High Purity Oxygen System .... . Diffused Air System ........... Mechanical Air System (fixed, floating or rotor) .............. Separate Sludge Reaeration ..... (N) Trickling Filter High Rate . ................ . Standard Rate ............... Packed Tower ............... (iii) Biological Aerated Filter or Aerated Biological Filter ...................... (iv) Aerated Lagoons ..................... . (v) Rotating Biological Conlactors ......... . (vi) Sand Filters - intermittent biological .... . recirculating biological .... . (vn) Stabilization Lagoons ................... (viii)Clarifier .............................. (ix) Single stage system for combined carbonaceous removal of SOD and nitrogenous removal by nitrification (see def. No. 12) (Points for this item have to be in addition to items (5) (a) @ through (5) (a) NM) ................. (x) Nutrient additions to enhance SOD removal.. ............ (xi) Biological Culture ('Super Bugs') addition to enhance organic compound removal ..... (b) Nitrogenous Stage (i) Aeration - High Purity Oxygen System ... , . Diffused Air System ........... Mechanical Air System (fixed, floating, or rotor) ...... ...... Separate Sludge Reaeration .... . V) Trickling Filter - High Rate .............. Standard Rate ............ Packed Tower............ (iii) Biological Aerated Filter or Aerated Biological Filter ......................... (iv) Rotating Biological Conlactors ............ (v) Sand Filter - intermittent biological ....... . recirculating biological ....... . (v i) Clarifier ................................ 20 10 8 3 7 5 5 10 10 10 2 3 S 5 8 5 5 20 10 8 3 7 5 5 10 10 2 3 5 (6) TERTIARY OR ADVANCED TREATMFNT UNIT (10) CHEMICAL ADDITION SYSTEM (S) (See definition No. 9) (a) Activated Carbons Beds - (not applicable to chemical additions rated as item without carbon regeneration .................. 5 (3) (i). (5) (a) (xi), (6) (a), (6) (b), (7) (b). (7) (e), %ith Carbon regeneration .................... is (9) (a). (9) (b), or (9) (c) S points each: List., (b) powdered or Granular Activated Carbon Feed - 5 without carbon regeneration ................. 5 5 with carbon regeneration .... - ............. is . . . . . 5 (c) Air Stripping ....................... .. .. 5 5 (d) Denitrificalion Process (separate process) ..... 10 (e) Electrodialysis .............................. 5 (11) MISCELLANEOUS UNITS (0 Foam Separation ............................. 5 (a) Holding Ponds, Holding Tanks or Settling Ponds (g) Ion Exchange ................................ 5 for Organic or Toxic Materials including wastes (h) Land Application of Treated Effluent from mining operations containing nitrogen and/or (see definition no. 22b) (not applicable for phosphorous compounds in amounts significantly sand, gravel, stone and other similar mining greater than is common for domestic wastewater .......... 4 operations) (b) Effluent Flow Equalization (not applicable to storage (i) on agriculturally managed sites (See def. basins which are inherent in land application systems). 2 No. 4)................................... 10 (c) Stage Discharge (not applicable to storage basins (ii) by high rate infiltration on non -agriculturally inherent in land application systems ................. managed sites (includes rotary distributors „ (d) Pumps -----„--- _—_. _ .. _•- -. „ .„ ,� . 6and similar fixed nozzle systems) ........... 4 e Stand-ByPower Sv l (iif) by subsurface disposal (includes low pressure (f) Thermal Pollution Control Device ............................................ 3 pipe systems and gravity systems except at plants consisting of septic EaO and nitrifica- tion lines only) ............................. 4 TOTAL POINTS tp (i) Microsaeens.................................. 5 (j) Phosphorus Remoaal by Biological Processes CLASSIFICATION (See def. No. 26) ............................ 2 0 (k) Polishing Ponds - wilhout aeration ....... 2 ss t_...„..... .„� .„.„.„_ 5 25 Points with aeration .......... 5 Ctass I ____„ _.._ . „... „ „ 26- 50 oinls (I) Post Aeration - cascade ............. 1 0 Class l!L„..„„_.�_..._....._...._.� „... „.... 51- 65 Points diffused or mechanical ... 5 Class IV..... _ —_ _ 66- Up Points (m) Reverse Osmosis ............................... 5 (n) Sand or Mixed -Media Filters - low rate ........... 2 Facilities having a rating of one through four points, inclusive, high rate .......... 5 do not require a certified operator. Classification of all other (o) Treatment processes for removal of metal or facilities requires a comparable grade operator in responsible cyanide .......................... ......... 15 charge. (p) Treatment processes for removal of toxic materials other than metal or cyanide ......... 15 Facilities having an activated sludge process will be assigned a minimum classification of Class 11. I SLUDGE TREATMENT Facilities having treatment processes for the removal of metal (a) Sludge Digestion Tank - Heated ............... 10 or cyanide will be assigned a minimum classification of Class 11. Aerobic ............... 5 Unhealed ............. 3 Facilities having treatment processes for the biological removal (b) Sludge Stabilization (chemical or thermal) ....... 5 of phosphorus will be assigned a minimum classification of Class (c) Sludge Drying Beds - Gravity ................. 2 I!!. Vacuum Assisted ....... 5 (d) Sludge Eluination ............................. 5 In -plant processes and related control equipment which are an (e) Sludge Conditioner (chemical or thermal) ........ 5 integral part of industrial production shall not be considered waste (i) Sludge Thickener (gravity) ...................... 5 treatment. Likewise, discharges of wastewater from residences (g) Dissolved Air Flotation Unit having a design flow of 1.000 gpd or less, shall not be subject to (not applicable to a unit rates as (3) (1) ......... s rating. (h) Sludge Gas Utilization (including gas storage) .... 2 (i) Sludge Holding Tank - Aerated ................ 5 ADDITIONAL COMMENTS: Non -aerated ............ 2 Q) Sludge Incinerator - (not including activated carbon regeneration) ..... 10 (k) Vacuum Filter, Centrifuge or Filter Press or other similar dewalering devices .................... 10 (B) SLUDGE DISPOSAL (including incinerated ash) (a) Lagoons ........................................ 2 (b) Land Application (surface and subsurface) (see definition 22a) -where the facility holds the land app. permit ... 10 -by contracting to a land application operator who holds the land application permit ................ 2 -land application of sludge by a contractor who does not hold the permit for the wastewater treatment facility where the sludges generated ......... 10 (c) Landfilled (burial) ............................. 5 (9) DISINFECTION (a) Chlorination ............................. 5 (b) Dechlorinalion ........................ 5 (c) Ozone .............................. 5 (d) Radiation ........................... 5