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Home My WebLink AboutWQ0006594_Final Permit_19920917State of North Carolina Department of Environment, Health and Natural Resources Division of Environmental Management 512 North Salisbury Street • Raleigh, North Carolina 27611 James G. Martin, Governor William W. Cobey, Jr., Secretary September 17, 1992 Mr. Timothy Cole, Environmental Affairs Manager Unifi, Incorporated Post Office Box 698 Yadkinville, North Carolina 27055 A. Preston Howard, Jr., P.E. Acting Director Subject: Permit No. WQ0006594 Unifi, Incorporated, Plant No. 2 Land Application of Sludge Rockingham County Dear Mr. Cole: In accordance with your application received June 8, 1992, we are forwarding herewith Permit No. WQ0006594 dated September 17, 1992, to Unifi, Incorporated for the operation of a land application of sludge program. This permit shall be effective from the date of issuance until August 31, 1997, 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 forth 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 qW One set of approved plans and specifications is being forwarded to you. If you need additional information concerning this matter, please contact Mr. John Seymour at 919/ 733-5083. cc: Rockingham County Health Depa rtment Environmental Waste Recycling, Incorporated Winston-Salem Regional Office, Water Quality Section Winston-Salem Regional Office, Groundwater Section Jack Floyd, Groundwater Section Central Office Training and Certification Facilities Assessment Unit 4W NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION DEPARTMENT OF ENVIRONMENT, HEALTH AND NATURAL RESOURCES RALEIGH SLUDGE LAND APPLICATION 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 Unifi, Incorporated Rockingham County FOR THE operation of a sludge land application program consisting of the application of approximately 20.0 dry tons per year of sludge (no domestic sludge) from the Unifi, Incorporated's Plant No. 2 (in Reidsville, N.C.) wastewater treatment facility to approximately 178.2 usable acres of land in Rockingham County with no discharge of wastes to the surface waters, pursuant to the application received June 8, 1992, 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 August 31, 1997, and shall be subject to the following speed conditions and limitations: • :VY-OW4 XMIM =11 FROi::l 1. The Winston-Salem Regional Office, telephone number 919/ 896-7007 and the appropriate local governmental official (county manager/city manager) shall be notified at least twenty- four (24) hours prior to the initial application of the sludge so that an inspection can be made of the application sites and application method. 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. Also the Rockingham County Manager's office must be notified prior to the initial application so that they will be aware that the operation has commenced. 2. This permit shall become voidable if the soils fail to adequately absorb the wastes and may be rescinded unless the sites are maintained and operated in a manner which will protect the assigned water quality standards of the surface waters and ground waters. 3. The land application program shall be effectively maintained and operated as a non - discharge system to prevent the discharge of any wastes resulting from the operation of this program. ftr 5. In the event that the land application program is not operated satisfactorily, including the creation of nuisance conditions, the Permittee shall cease applying sludge to the sites and take any immediate corrective actions, including the construction of additional or replacement wastewater treatment or disposal facilities. b. No crops for direct human consumption shall be raised on these sites for a period of 18 months following sludge application. The proposed growing of tobacco is unacceptable in that tobacco is considered a crop for direct human consumption. 7. Maximum slope for sludge application shall be 10% for surface application and 18%Q for subsurface applications. 8. The following buffer zones shall be maintained: a) 400 feet from residences or places of public assembly under separate ownership for surface application method; however, the buffer zone requirement may be reduced to a minimum of 100 feet upon written consent of the owner and the appropriate DEM regional office, b) 200 feet from residences or places of public assembly under separate ownership for injection method; however, the buffer zone requirement may be reduced to a minimum of 100 feet upon written consent of the owner and the appropriate DEM regional office, c) 100 feet from "SA and SB" classified waters and public surface water supplies for both methods, d) 50 feet from "WS" classified waters and other streams, creeks, lakes, rivers, and surface water drainage ways for injection method, e) 100 feet from "WS" classified waters and other streams, creeks, lakes, rivers and surface water drainage ways for surface application method, f) 100 feet from property lines for both methods; however, this requirement may be reduced to 50 feet upon written concurrence from the adjoining property owner and the appropriate DEM regional office, g) 50 feet from public right of ways for surface application methods, h) 25 feet from public right of ways for subsurface disposal methods, i) 10 feet from upslope interceptor drains and surface water diversions for both methods, j) 25 feet from downslope interceptor drains, surface water diversions, groundwater drainage systems and surface drainage ditches for both methods. 9. A copy of this permit shall be kept at the land application site when sludge is being applied during the life of this permit. A spill prevention and control plan shall be kept in all sludge transport and application vehicles. 10. Specific sludge application area boundaries shall be clearly marked on each site prior to and during sludge application. 11. No sludge at any time shall be stored at any application site. 1. The facilities and disposal sites shall be properly maintained and operated at all tames. 2. A suitable vegetative cover as listed in condition II 3, shall be maintained in accordance with the crop management plan approved by this Division. 2 IW 3. The application rates shall not exceed the following for the specified crops: Q= PAN (lb./ yy_ _ Alfalfa 250 Blue Grass 220 Coastal Bermuda Grass 350 Corn (Silage & Grain) 200 Cotton 100 Fescue 250 Forest (Hardwood & Softwood) 75 Small Grain (Wheat, barley, milo, oats) 100 Sorghum 120 Soybeans 150 Sudex (Hay) 160 Sudex (Silage) 200 Timothy, Orchard, & Rye Grass 200 4. No sludges other than the following are hereby approved for land application in accordance with This permit: Permit Estimated Unifi, Inc. Rockingham City of Reidsville 20.0 Plant No. 2 WWTP 5. The lifetime heavy metal loadings shall not exceed the following for the corresponding Cation Exchange Capacities (CEC): MOMI Lead 500 Zinc 250 Copper 125 Nickel 125 Cadmium 4.5 6. 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 II, 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. 7. Adequate procedures shall be provided to prevent surface runoff from carrying any disposed or stored sludge material into any surface waters. 8. Animals shall not be grazed on sludge applied land within a 30-day period following the sludge application. Application sites that are to be used for grazing shall have fencing that will be used to prevent access after each application. 3 it 9. Surface applied sludge will be plowed or disced within twenty-four (24) hours after application on lands with no cover crop established. 10. For areas that are prone to flooding or within the 100-year flood elevation, sludge may be applied only during periods of dry weather. The sludge must be incorporated into the soil within twenty-four (24) hours of application. 11. Appropriate measures must be taken to control public access to the land application sites during active site use and for the 12-month period following the last sludge application event. Such controls may include the posting of signs indicating the activities being conducted at each site. 12. Adequate provisions shall be taken to prevent wind erosion and surface runoff from conveying pollutants from the sludge application area onto the adjacent property or into the surface waters. 13. Sludge shall not be applied in inclement weather or until 24 hours following a rainfall event of 1/2-inch or greater in 24 hours. Any emergency sludge disposal measures must first be approved by the Division of Environmental Management. 14. The site shall be adequately limed to a soil pH of at least 6.5 prior to sludge application. Sludge may be applied to sites with a pH of less than 6.5 provided a sufficient amount of lime is also applied to achieve a final pH of the lime, sludge and soil mixture of at least 6.5. 1. Any monitoring (including groundwater, surface water, sludge, soil, or plant tissue analyses) deemed necessary by the Division of Environmental Management to insure protection of the environment will be established and an acceptable sampling and reporting schedule shall be followed. If monitoring data indicates minimal or no concern to the Division, reduction of monitoring requirements may be pursued after two annual reporting periods. 2. Proper records shall be maintained by the Permittee tracking all disposal activities. These records shall include, but are not necessarily limited to the following information: a) source of sludge b) date of sludge application c) location of sludge application (site, field, or zone #) d) method of application e) weather conditions f) soil conditions g) type of crop or crop to be grown on field h) volume of sludge applied in gallons/acre and dry tons/acre i) annual and cumulative totals of dry tons/acre of sludge, annual and cumulative pounds/acre of each heavy metal (which shall include, but not be limited to lead, nickel, cadmium, copper and zinc), annual pounds/acre of plant available nitrogen (PAN), and annual pounds/acre of phosphorus applied to each field. n 4W 3. A representative annual soils analysis (Standard Soil Fertility Analysis) shall be conducted of each site receiving sludge in the respective calendar year and the results maintained on file by the Permittee for a minimum of five years. The Standard Soil Fertility Analysis shall include, but is not necessarily limited to, the following parameters: % Base Saturation Magnesium Phosphorus Potassium Le1 Zincl pH Manganese Cation Exchange Capacity Sodium Nickell Cadmiuml Copperl Calcium 1 Soils analysis for these parameters shall be conducted once prior to permit renewal on soils from each site which has received sludge during the permit cycle. 4. A quarterly sludge analysis and annual Toxicity Characteristics Leaching Procedure (TCLP) analysis shall be conducted by the Permittee and the results maintained on file by the Permittee for a minimum of five years. If land application occurs at a frequency less than quarterly, sludge analysis will be required for each instance of land application. The sludge analysis shall include but is not necessarily limited to the following parameters: % total solids Magnesium Chlorides Sulfate Phosphorus Potassium Lead Zinc Copper Nickel Cadmium Chromium Sodium Calcium Total Nitrogen Ammonia Nitrogen NitraWNitrite Nitrogen pH Plant Available Nitrogen (by calculation) The TCLP analysis shall include the following parameters: Arsenic Barium Benzene Cadmium Carbon tetrachloride Chlordane Chlorobenzene Chloroform Chromium o-Cresol m-Cresol p-Cresol Cresol 2,4-D 1,4-Dichiorobenzene 1,2-Dichloroethane 1,1-Dichloroethylene 2,4-Dinitrotoluene Endrin Heptachlor (and its hydroxide) Hexachlorobenzene Hexachloro-1,3-butadiene Hexachloroethane Lead Lindane Mercury Methoxychlor Methyl ethyl ketone Nitrobenzene Pentachlorophenol Pyridine Selenium Silver Tetrachloroethylene Toxaphene Trichloroethylene 2,4,5-Trichlorophenol 2,4,6-Trichlorophenol 2,4,5-TP (Silvex) Vinyl chloride 5 5. Three copies of all monitoring and reporting requirements as specified in conditions III 1, III 2, III 3, and III 4 shall be submitted annually on or before March 1 of the following year to the following address: NC Division of Environmental Management Water Quality Section Facility Assessment Unit PO Box 29535 Raleigh, NC 27626-0535 7. Noncompliance Notification: The Permittee shall report by telephone to the Winston - Salem Regional Office, telephone number 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 fast knowledge of the occurrence of any of the following: a. Any occurrence with the land application program which results in the land application of significant amounts of wastes which are abnormal in quantity or characteristic. b. Any failure of the land application program resulting in a release of sludge material to receiving waters. c. Any time that self -monitoring information indicates that the facility has gone out of compliance with the conditions and limitations of this permit or the parameters on which the system was designed. d. Any process unit failure, due to known or unknown reasons, that render the facility incapable of adequate sludge treatment. e. Any spillage or discharge from a vehicle or piping system transporting sludge to the application site. 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. 1. No sludge shall be applied to proposed application field number 4, due to drainage problems caused by SR 2432. 2. No land application of waste activities shall be undertaken when the seasonal high water table is less than three feet below land surface. 3. The �mpliance 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 143-215.6A. The sale of. property, by the Permittee, which is within or contiguous to the disposal m system site may alter location of the Compliance Boundary. For facilities permitted on or after December 30, 1983, the Compliance Boundary is established at the lesser of 250 feet from the perimeter of the land application site, or 50 feet within the property boundary. 6 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 BOUNDARYfor the disposal system is specified by regulations in IS 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 REVIE 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. 4. Any groundwater quality monitoring as deemed necessary by the Division. of Environmental Management shall be provided. 1. The Permittee or his designee shall inspect the sludge storage, transport, 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 by the Division of Environmental Management or other permitting authority. 2. 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. 1. This permit shall become voidable unless the land application activities are carried out in accordance with the conditions of this permit and in the manner approved by this Division. 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 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. 7 4. This permit shall become voidable unless the agreements between the Permittee and the landowners/lessees are in full force and effect. 5. The following are approved sites for sludge application (see attached map(s)): Site No. OwnerliesseeApplication Areal(acres) UN 1 Clinton Hanks 4.0 UN2 Clinton Hanks 3.3 UN3 Clinton Hanks 13.2 UN6 Clinton Hanks 12.0 UN 12 Clinton Hanks 3.5 UN 14 Clinton Hanks 5.0 UN16 Clinton Hanks 2.8 UN17 Clinton Hanks 3.3 UN 19 Clinton Hanks 15.0 UN20 Clinton Hanks 3.8 UN22 Clinton Hanks 3.3 UN23 Clinton Hanks 3.8 UN24 Clinton Hanks 6.0 UN25 Clinton Hanks 5.0 UN26 Clinton Hanks 3.5 UN27 Clinton Hanks 6.0 UN28 Clinton Hanks 2.8 The following are approved sites for sludge application that require specified modifications and/or deletions (see attached map(s)): Site No. Qmmerlessee.-Application Areas acre UN5 Clinton Hanks 9.0 Insure minimum 50 ft. buffer from floodplain UN7 Clinton Hanks 25.2 Delete southwest corner and northern tip from site where low (potentially wet) areas exist UN8 Clinton Hanks 8.0 Require incorporation within 24 hours* UN9 Clinton Hanks 7.2 Require incorporation within 24 hours* UN10 Clinton Hanks 4.6 Require incorporation within 24 hours* UN11 Clinton Hanks 3.7 Require incorporation within 24 hours* UN13 Clinton Hanks 3.0 Delete Southern tip of site+ UN15 Clinton Hanks 1.7 Delete Southern tip of site+ 8 Site No. OwnerA essee Application Areal (acres) continued UN18 Clinton Hanks 6.3 Delete Southwestern tip of site+ UN21 Clinton Hanks 6.7 Delete Southern tip of site+ UN29 Clinton Hanks 6.5 Delete Southern tip of site+ Total 178.2 acres usable 1- Application Area excludes buffer areas. * - Until a more stable & uniform vegetative cover is established. + - Questionable moderate slope and/or nearness to surface water during rainfall. 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 143-215.6A to 143-215.6C. 7. 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 15 NCAC 2H .0205 (c)(4). 8. 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. 9. A set of approved documents for the subject project must be retained by the applicant for the life of the permit. 10. 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. 11. This permit may be modified, or revoked and reissued to incorporate any conditions, limitations and monitoring requirements the Division of Environmental Management deems necessary in order to adequately protect the environment and public health. Permit issued this the 17th day of September 1992 CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION A. Preston How , J'r., Division of En vir en By Authority of the Permit No. WQ0006594 Director Management Commission r� m - hi - � o $ m 8 WINS ION- SAL EA# 33 AV $ ' t �J tl SIOHESAAI E 19 MI ; Soso !v a. 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'.�;' �:.4 ''s Lam• ,r�.'�.'••� •i •1• ! .1 ti "ti..�� '!y'ai'. I�a .n r1l; ill.1] •1. - -f �,�• r'�! ,, �` -��„ t :,' N•,, .,•i �. c• r ky ' Ty'7'• .� � • %. '.Rt.� i r i �'��`� i i h _ .. •,. � ;•, ' , ` 'f 11w -. , • i', .��/��}.I T yF �.7{11�,�/. 'C1 �+�►'Jf•.. 1 4 t 1 `i.- 4� ,.� !'� ` •.'�', } , .�! '1 +• ,wi^f Ir' •', ,�f�: 1 �i `' _ + �t�µ �'i•i."{` �t��•�t`f]. +j� 5 r4''1�. � +� Y'r1: Y! 4W RATING SCALE fOR CLASSIFICATION OF FACILITIES L.qlj a/1l1 raIl - H Name of Plant Owner or Cant Mailing Address County: RdCL`R Telephone. NPDES Permit No. NC00 Nondisc. Per- No. Lt16c ado G'qy IssueOate: o9//y/9L Expiration Date: oar Existing Facility New Facility Rated By:_ .TeDate: G ? I? /sZ- Reviewed (Train. & Cert.) Reg. Office_ Reviewed (Train. & Cert.) Central Office ORC Grade_ Plant Class: (circle one) 0 11 111 IV Total Points-d 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.......................... 1 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 ................................ 1 Of (b) Mechanical Screens, Static Screens or Comminuting Devices ........... ............. 2 (c) Grit Removal ................................ 1 or (d) Mechanical or Aerated Grit Removal ........... 2 (e) Flow Measuring Device ....................... 1 or (I) Instrumented Flow Measurement .............. 2 (9) Preaeration................................ 2 (h) Influent Flow -Equalization .... . .............. 2 (i) Grease or Oil Separalors - Gravity .......... 2 Mechanical .......... 3 Dissolved Air Flotation. 8 G) Prechlorination ..................:........... 5 (4) PRIMARY TREATMENT UNITS (a) Septic Tank (see definition no. 43) .............. 2 (b) ImhoflTank.................................. 5 (c) Primary Clarifiers .. . . ....... ............. 5 (d) Settling Ponds or Settling Tanks for inorganic Nontoxic Materials (sludge handling facilities for water purification plants, sand, gravel, stone, and other mining operations except recreational activities such as gem or gold -- .......... 2 SS (5) SECONDARY TREATMENT UNITS (a) Carbonaceous Stage (!)Aeration - High Purity Oxygen System ..... Diffused Air System ........... Mechanical Air System (fixed, floating or rotor) .............. Separate Sludge Reaeration .... (ii) Trickling Filter High Rate ................... Standard Rate ............... Packed Tower ............... (iii) Biological Aerated Filter or Aerated Biological Filter ..................... . (iv) Aerated Lagoons ..................... . (v) Rotating Biological Contactors .......... (vi) Sand Filters - intermittent biological ..... recirculating biological .... . (vu) Stabilization Lagoons ................... (viii)Clarifier .............................. (ix) Single stage system for combined carbonaceous removal of BOD and nitrogenous removal by nitrification (see def. No. 12) (Points for this item have to be in addition to items (5) (a) (i) through (5) (a) (viu) ................. (x) Nutrient additions to enhance BOD 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 .... . (ii) Trickling Filler - High Rate .............. Standard Rate ............ Packed Tower ........... . (ill) Biological Aerated Filter or Aerated Biological Filler ......................... (iv) Rotating Biological Contactors ............ (v) sand Filter- intermillent biological ....... . recirculating biological ........ (vl) Clarifier........ 6.............. • ........ 20 10 8 3 7 5 5 10 10 10 2 3 J 5 8 5 5 20 10 8 3 7 S S 10 10 2 3 5 4W (5) TERTIARY OR ADVANCED TREATMENT UNIT (10) CHEMICAL ADDITION SYSTEM (S) (See definition No. 9) -N Activated Carbons Beds - (not applicable to chemical additions rated as item without carbon regeneration .................. 5 (3) (j}, (5) (a) (xi), (6) (a), (6) (b), (7) (b), (7) (e}, with carbon regeneration .. . ................. is (9) (a), (9) (b), or {9) (c) 5 points each: Lis€: (b) Powdered or Granular Activated Carbon Feed - 5 without carbon regeneration ................. 5 5 with carbon regeneration . . .. ............. 15 5 {c} Air Stripping ..................... . : .. 5 5 (d) Denibificalian Process (separate process) ..... 10 (e) Electrodialysis ........ _ .................... 5 (11) MISCELLANEOUS UNITS {[} Foam Separation ............................. 5 (a) Holding Ponds, Holding Tanks or Settling Ponds {g} ton Exchange ..................... . .......... 5 for Organic or Toxic Materials including wastes (h) Land Application of Treated Effluent from mining operations containing nitrogen andlor (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 agricilfturally managed sites (See del. 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-agriculiuraily inherent in land application systems ....................................... 5 managed sites (includes rotary distributors (d) 3 and similar fired nozzle systems) ... ....... 4 e Stand Power Su f _ __ ._ .... 3 (III) by subsurface disposal (includes low pressure (f) Thermal Pollution Control Device' ............................................. 3 pipe systems and gravity systems except at plants consisting of septic lank and nitrifica- tion fines only) ............................. 4 TOTAL POINTS (i) Microscreens ..... ............ ............... 5 (j) Phosphorus Removal by Biological Processes CLASSIFICATION (k) (See def. No.26) ............................ 20 Polishing Ponds - without aeration ....... 2 ss ! _ _. .. 5 - 25 Points with aeration .......... 5 ss ll..... ... .... __ 26- 50 Points (1) Post Aeration - cascade .............. 0 Class 51- 65 Points diffused or mechanical ... 5 Class 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, Nigh 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 II. 1 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 Unheated ............. 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 Vacuum Assisted ....... 5 (d) Sludge Elutriation ............................. 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 ( f ) 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) ......... 8 rating. (h) Sludge Gas Utilization (including gas storage) .... 2 (i) Sludge Holding Tank - Aerated ................ 5 ADDITIONAL COMMENTS-. Non -aerated ............ 2 (j) Sludge Incinerator - (not including activated carbon regeneration) ..... 10 (k) Vacuum Filler, Centrifuge or Filler Press or other similar dewalering devices .................... 10 18) 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 . . -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 sludga-is genera led ......... 10 (c) Landfilled (burial) ............................. 5 19) DISINFECTION (a) Chlorination ............................. 5 (b) Dechlorinalion ........................ 5 (c) Ozone .............................. 5 (d) Radiation .......................... 5