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HomeMy WebLinkAboutWQ0001814_Final Permit_19940930State of North Carolina Department of Environment, {-health and Natural Resources Division of Environmental Management James B. Hunt, Jr., Governor Jonathan B. Howes, Secretary A. Preston Howard, Jr., P.E., Director Mr. C. Dolan Little, Plant Manager International Paper Post Office Box 369 Spring Hope, North Carolina 27882 Dear Mr. Little: �EHNR September 30, 1994 Subject: Permit No. WQ0001814 International Paper Masonite Division Wastewater Spray Irrigation Nash County In accordance with your application received March 24, 1994, we are forwarding herewith Permit No. WQ0001814, dated September 30, 1994, to International Paper for the construction and operation of the subject wastewater treatment and spray irrigation facilities. 1'his permit shall void Permit No. WQ0001814 dated October 20, 1989 and shall be effective from the date of issuance until August 31, 1999, and shall be subject to the conditions and limitations as specified therein. Please pay particular attention to the monitoring requirements in this permit. Failure to establish an adequate system for collecting and maintaining the required operational information will result in future compliance problems. If any parts, requirements, or limitations contained in this permit are unacceptable, you have the right to request an adjudicatory hearing upon written request within thirty (30) days following receipt of this permit. This request must be in the form of a written petition, conforming to Chapter 150B of the North Carolina General Statutes, and filed with the Office of Administrative Hearings, P.O. Drawer 27447, Raleigh, NC 27611-7447. Unless such demands are made this permit shall be final and binding. If you need additional information concerning this matter, please contact Ms. Angela Y. Griffin at (919) 733-5083. Sincerely, r A. Presa Howard, Jr., P.E. cc: Nash County Health Department Raleigh Regional Office, Water Quality Section Raleigh Regional Office, Groundwater Section Groundwater Section, rack Floyd Training and Certification Unit Facilities Assessment Unit P.O. Box 29535, Raleigh, North Carolina 27626-0535 Telephone 919-733-5083 FAX 919-733-9919 An Equal Opportunity Affirmative Action Employer 50% recycled/ 10% post -consumer paper 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 International Paper Masonite Division Nash County FOR THE continued operation of a 5,000 GPD extended aeration type wastewater treatment plant with chlorination, for treating domestic wastes which feeds into a 216,000 GPD industrial and domestic wastewater treatment facility consisting of an influent pump station, a hydrosieve for solids removal, chemical (lime) treatment tanks, a polymer feed system, a primary clarifier, dual 600,000 gallon aeration basins with mechanical aeration, two (2) sludge holding ponds, flow measuring and recording equipment, a long term (50 MG) holding pond and two (2) spray irrigation fields; one consisting of approximately 16 acres and the other approximately 5 acres to serve International Paper's Masonite Division (approximately 10,972 GPD is spray irrigated) with no discharge of wastes to the surface waters, pursuant to the application received March 24, 1994, 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 void Permit No. WQ0001814 issued October 20, 1989 and shall be effective from the date of issuance until August 31, 1999, and shall be subject to the following specified conditions and limitations: I. 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 assimilate the wastewater, the Permittee shall take immediate corrective actions including those actions that may be required by the Division of Environmental Management, such as the construction of additional or replacement wastewater treatment and disposal facilities. 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 residuals generated from these treatment facilities must be disposed in accordance with General Statute 143-215.1 and in a manner approved by the North Carolina Division of Environmental Management. 4. Within ninety (90) days of permit issuance International Paper shall submit an acceptable residuals management plan to the Raleigh Regional Office, 3800 Barrett Drive, Suite 101 Raleigh, NC 27609 5. Diversion or bypassing of the untreated wastewater from the treatment facilities is prohibited. 6. 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, and g) 50 feet between wastewater treatment units and property lines. Some of the buffers specified above may not have been included in previous permits for this waste treatment and disposal system.. These buffers are not intended to prohibit or prevent modifications, which are required by the Division, to improve performance of the existing treatment facility. These buffers do, however, apply to modifications of the treatment and disposal facilities which are for the purpose of increasing the flow that is tributary to the facility. These buffers do apply to any expansion or modification of the spray irrigation areas and apply in instances in which the sale of property would cause any of the buffers now complied with, for the treatment and disposal facilities, to be violated. The applicant is advised that any modifications to the existing facilities will require a permit modification. I1. OPERATION AND MAINTENANCE REQUIREMENTS 1. The facilities shall be properly maintained and operated at all times. 2. Upon classification of the facility by the Certification Commission, the Permittee shall employ a certified wastewater treatment plant operator to be in responsible charge (ORC) of the wastewater treatment facilities. The operator must hold a certificate of the type and grade at least equivalent to or greater than the classification assigned to the wastewater treatment facilities by the Certification Commission. The Permittee must also employ a certified back-up operator of the appropriate type and grade to comply with the conditions of Title 15A, Chapter 8A, .0202. The ORC of the facility must visit 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. 3. A suitable vegetative cover shall be maintained. 4. Irrigation shall not be performed during inclement weather or when the ground is in a condition that will cause runoff. 5. Adequate measures shall be taken to prevent wastewater runoff from the spray field. 6. The facilities shall be effectively maintained and operated as a non -discharge system to prevent the discharge of any wastewater resulting from the operation of this facility. 2 7. The application rate shall not exceed 41 inches per year at mz instantaneous application rate not to exceed 0.20 inches per hour. 8. No type of wastewater other than that from International Paper/Masonite Division 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. The waste treatment facility, including the lagoons must be fenced to prevent trespassing. Such controls may also include the posting of signs showing the activities being conducted at each site. 11. Freeboard in the 50 MG holding pond shall not be less than two feet at any time. 12. The domestic waste effluent must be chlorinated before being added to the industrial wastewater. 13. Dikes shall be constructed to prevent surface water runoff from the spray field. III. MONITORING 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. 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) Ioadings 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 February, rune and October for the following parameters: BOD5 TSS Fecal Coliform pH NH3 as N Sodium Magnesium Calcium Sodium Adsorption Ratio by Calculation 3 4. Three (3) copies of all operation and disposal records (as specified in condition 11I 2) on Form NDAR--1 shall be submitted on or before the last day of the following month. Three (3) copies of all effluent monitoring data (as specified in condition III 3) on Form NDMR-1 shall be submitted on or before the last day of March, July and November. All information shall be submitted 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 number (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 renders the facility incapable of adequate wastewater treatment, such as mechanical or electrical failures of pumps, aerators, compressors, etc.; c. Any failure of a pumping station, sewer line, or treatment facility resulting in a by-pass directly to receiving waters without treatment of all or any portion of the influent to such station or facility; or 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 Within 45 days of permit issuance, one (1) upgradient monitoring well shall be installed to monitor groundwater quality. The monitor well (designated as MW-4) 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 general location and name for each well is marked on Attachment A. Each monitoring well shall be located at the review boundary, constructed in accordance with this permit, and approved by the Raleigh Regional Office. 2. The three (3) existing monitor wells (MW-1, MW-2, MW-3) and the new monitor well (MW-4) depicted on the attached site map (Attachment A), shall be sampled initially after construction and thereafter every February, June and October for the following parameters: NO3 Total Ammonia TDS TOC pH Water Level Chloride NO2 SO4 Phenols Volatile Organic Compounds - (by EPA Method 6230 D) 4 Method 6230D (Capillary - Column), "Standard Methods For The Examination of Water and Wastewater", 17th ed., 1989 The measurement of water levels must be made prior to sampling for the remaining parameters. The depth to water in each well shall be measured from the surveyed point on the top of the casing. The measuring points (top of well casing) of all monitoring wells shall be surveyed to provide the relative elevation of the measuring point for each monitoring well. If TOC concentrations greater than 10 mg/l are detected in any downgradient monitoring well, additional sampling and analysis must be conducted to identify the individual constituents comprising this TOC concentration. If the TOC concentration as measured in the background monitor well exceeds 10 mg/l, this concentration will be taken to represent the naturally occurring TOC concentration. Any exceedances of this naturally occurring TOC concentration in the downgradient wells shall be subject to the additional sampling and analysis as described above. If any volatile organic compounds are detected by method 6230D, or the equivalent method 502.2, then EPA methods 604 and 611 must also be run to detect other organic compounds which may be present. The results of all analyses specified in the monitoring requirements, r including 604 and 611 if required, must be submitted simultaneously. The results of the sampling and analysis shall be sent to the Groundwater Section, Permits and Compliance Unit, P.O. Box 29535 Raleigh, N.C. 27626-0535 on Form GW-59 [Compliance Monitoring Report Form] every March, July and November. 3. Any additional groundwater quality monitoring, as deemed necessary by. the Division, shall be provided. 4. The COMPLIANCE BOUNDARY for the disposal system is specified by regulations in 15A NCAC 2L, Groundwater Classifications and Standards. The Compliance Boundary for the disposal system constructed prior to December 31, 1983 is established at either (1) 500 feet from the waste disposal area, or (2) at the property boundary, whichever is closest to the waste disposal area. An exceedance of Groundwater Quality Standards at or beyond the Compliance Boundary is subject to immediate re -mediation action in addition to the penalty provisions applicable under General Statute 143-215.6A(a)(1). In accordance with 15A NCAC 2L, a REVIEW BOUNDARY is established around the disposal systems midway between the Compliance Boundary and the perimeter of the waste disposal area. Any exceedance of standards at the Review Boundary shall require remediation action on the part of the Permittee. 5. All wells that are constructed for 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. 6. 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 groundwater 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. 7. 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":100') signed and sealed by a professional engineer or a state licensed land surveyor that indicates all of the following information: 5 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 the established horizontal control monument; e. the relative elevation of the top of the well casing (which shall be known as the "measuring point"), and f. the depth of water below the measuring point at the time the measuring point is established. The survey shall be conducted using approved practices outlined in North Carolina General Statutes Chapter 89C and the North Carolina Administrative Code Title 21, Chapter 56. The surveyor shall establish a horizontal control monument on the property of the waste disposal system and determine the latitude and longitude of this horizontal control monument to a horizontal positional accuracy of +/- above shall be surveyed relative to this horizontal control monument. The positional accuracy of features listed in a. through e. above shall have a ratio of precision not to exceed an error of closure of 1 foot per 10,000 feet of perimeter of the survey. Any features located by the radial method will be located from a minimum of two points. Horizontal control monument shall be installed in such a manner and made of such materials that the monument will not be destroyed due to activities that may take place on the property. The map shall also be surveyed using the North American Datum of 1983 coordinate system and shall indicate the datum on the map. All bearings or azimuths shall be based on either the true or NAD 83 grid meridian. If a Global Positioning System (GPS) is used to determine the latitude and longitude of the horizontal control monument, a GPS receiver that has the capability to perform differential GPS shall be used and all data collected by the GPS receiver will be differentially corrected. The maps and any supporting documentation shall be sent to the Groundwater Section, N.C. Division of Environmental Management P.O. Box 29535 Raleigh, N.C. 27626- 0535, 8. 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 the associated GW-1 forms to the Permits and Compliance Unit, Groundwater Section, P.O. Box 29535, Raleigh, NC, 27626-0535, 9. For the initial sampling of the well as specified elsewhere in the permit, the Permittee shall submit a copy of the GW-1 Form (Well Completion 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 NC General Statutes 143-215.6. V . INSPECTIOhLS 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 Permitter 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 Permitter. This log of inspections shall be maintained by the Pcnnittec for a per"Eod 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. 6 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 or facility at any reasonable time for the purpose of determining compliance with this permit, may inspect or copy any records that must be maintained under the terms and conditions of this permit, and may obtain samples of groundwater, surface water, or leachate. V I. GENERAL CONDITIONS l . This permit shall become voidable unless the facilities are constructed in accordance with the conditions of this permit, the approved plans and specifications, and other supporting data. 2. This permit is effective only with respect to the nature and volume of wastes described in the application and other supporting data. 3. This permit is not transferable. In the event there is a desire for the facilities to change ownership, or there is a name change of the Permittee, a formal permit request must be submitted to the Division of Environmental Management accompanied by an application fee, documentation from the parties involved, and other supporting materials as may be appropriate. The approval of this request will be considered on its merits and may or may not be approved. 4. Failure to abide by the conditions and limitations contained in this permit may subject the Permittee to an enforcement action by the Division of Environmental Management in accordance with North Carolina General Statute 143-215.6(a) to 143-215.6(c). 5. The issuance of this pen -nit 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. The annual administering and compliance fee must be paid by the Permittee within thirty (30) days after being billed by the Division. Failure to pay the fee accordingly may cause the Division to initiate action to revoke this permit as specified by 15A NCAC 2H .0205 (c)(4)• 7. 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 30th day of September, 1994 NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION Nr � 1AACLA- - f A. Preston H ward, Jr,, P.E. Director / Division of vironmental Management By Authority of the Environmental Management Commission Permit Number WQ0001814 7 PIO lo CD P L A A/ A T 10 N LAGOON_ _ ao�„a.,� Pratt ell �(•o►l flinc / ./ ...;-1,.�,-' \ .M Z - -- � /�� \, � Spray Fit / J TL 1 N SCA LE Mason;it Core WQ0norlq, 123i1� 1i - - 1305 I 1�•; `� —200 �` \ ` ' • \ Cem : - 29. � 1 \ U e � em 24cl Z i I Cems• _ 4 -_it 29 n _ -- y� •Bass - _ _ - + _ - i ethel n Crossroads CA Cem ? GraveT. i :Cem Cem:: �• Cep \�ll r' i " �`` ;-`f====;i- 'ATING FrM CLASS11-ICATiON OF PIDI_Lvriot< c*(_;"n"[',,()t_ .me, of Facility: .vner or Contact PrScn:.Mc- Mailing Address: A/ COL)MY: 0 �C' 0 r, r3 Present Classificat Dn: ---------_--`---_NeerFacility-__ sting I_a("ih!Y NPDES Per. No. Nll:�10 Nondisc. Per. Dept.Pel lNo. Raied by: _ -3 'I_E!:-_Ph0r.n,*. ��__Z - _�- D,-i. I Cl: La�� / / 7CICI Reviewed by: 7- He"ith Dept. 1 r :_phorio: - 717 Offi,,.-! CRC: Check Class iiicati.-- - (s): Subsurface N/" --;..;,:on Land i'..,pplication \'vlastewater Classiiicaiion: (Circle One) 1 01 111 IV Vital 1111-L T PRQf-.PF,-,R-, _,=.C�T a _M- rSIOL-REOV//A$TETRF-FE2,i-7- FCC _jj� '�I r'/� �Yq ALS'OF��;-Tr /%-!,JY ,��RLC_ OF _�� F T ALIqQ QMVffY NIjRIFICATj-7,',,l UNI=z� PRE EXFNiPT-FF--CA-i-C-LAi-,5lfK-,T---•,! SLISSURFACE GLAS_SAFrA.7­__fl (check all units that app!,- 1.---seplic tank- 2. pump lanky siphon or purr _jstems —sand filters - ase trapfill 6. _oillwaler sepa-a:Or- 7. —gravity lrea:nneni and dlc�,osal: 8. __prc_;sufe subs! *,-,.c, and disposal: s P-r..,- -,, I nR aATK),' ' C;LAS&Fr,.-* I Ct 4 (cha�-' all units ulat 1. prclimi-a7-/ ;realmn;iI 32 2. lagoons 3. -s.--plic :anks 4. _purnp !ati_ 5. -0- mps G. and : :c,-, 7.__qre_se :r,, ' pfinler.;e-)!or 14- —c;addition , nm_:-'.�nlialgae 11._s.pray -."ga!:on of 1:-, addition to the ..bc,.-r-- classifications, pretrenimr-it of :;i excess of :! ?se components shal be rated using the poin: rating system and will rnquiro an oper,31o,, an vppro--:ial: dual certification L!-ND APPLICATJOIWRF� '_UAL'_ CLASSIFICATION (Applic- only 10 hl:'Jnr) 11. ____ . _Land applicmli­ r-,' b,.- r'!Ids. residum— C. C0wa'I1iIla:-:d un a sitc, to I-01AL140 COW' It'10 ("OrMill"St- it Lill cf piiy�,i_ll nd t.. Sowic TwWS:; i Fiiii*z- )q oll;'- CA !:. W! 'Ind d1facl di%t: !!w'., 3 only of ,!Iy 1w.-II'llt,11 :,t., o;:'.-nI, 4,,. Or MAliOV, ;.()<I d1ro(A :i slinfl only ell oil ­;I!, -.-I, and dv;por:I.- A(limcultule ol". a!in( viiih di-;(JI'-Ir)q !I- st'llare watul� Pinill sl:_::Ic- j'w.) "mil wo!'!f "In nild i1j,"I of 11 '.,'1 1". 11w It r. :o'jn.! !IIr„ 1 I- :%.6t; "'I'. - -file fallowing --cafe iS a V,d for lal!" t),dill'. IT E hi (, } 1,:m' Program (saki rinilnhion INQ, n................................... Inausirt,l ProtrowmaN Units or In {uslri Prolroar- (2) DESIGN FLC,W OF PLANFT IN sd r 31 a :no ];Cable !a m---c,nlarnatod eotin w.::ufs, vl-j(jgo Nnndlin0 laeili:iac I,or walor Puri(iC.vion plants, totally closed cycle systazu(r:,o doliniix) No. 11). and lacilhies consislirvd only of tam (4)(d) or Itoms (4)(d) and (I1)(d)) 0 - 20,000....................................................................................... . 20.001 - 50,000.............................-................... ,.......................... .......... -.._....................... 50.001 100,000.............................................................. -............................. .... ................ 1 D0,001 250.000 .............................. ............. ..., ................. _ ....--•--.........................................J. _.:3 ; 250,001 500.000......................... ............-.... ........... .................... ................. �•( 500.001 - 1,000,000............................ ......... ...... .............. ........................ .......... ._ _ . I1 1.000.001 - 2,000,00D.................................... ........................ ,......................................... 2-000.001 (arxi up) rats i point adc•:un:' far each 200.C(Y) G; d rapacity up to a inoxirrvw,, of ...................10 Design Flow (gpd)_ (3) PAELIMiNARYUNrrS/PRJCE£SES(see dafinaionN.T_; (a) BarScnxtns...................................................................................................... ....1 a (b) Mechanical Screans, Static Ccroens or C=minv!ing Device. ........ ......... ........... ........... ...................... ....._...�'. (c) Ga nornoval............................................................................... ...... .................... ,._ ... ...._............ ......... .. 1 or _ {d) Mochanical or Aomlvd Grit Fiemova}................................................................................ ........ (B) Flow Woasuring Dev'r_-e......................,...... . ......... ......................................._..............................................1 (I) or Instrumented Flow Measurement ............ ................................................................................................ (g) Preaarailon....................................................... .......... ........................................................................... ' (h) lnfluw Flow Equalization ............................................................................................................ . ' (-s) Grease or Oil Separators - Gravity............................................................................................... rMechanical .............................................. .................................................................................................. DissoivadAir Flo;alion............... _....... ..__.................. ................................... ............. ...... (J) Prechlorinasion.... _............................................ ...............,..........._..-,.................. ..... .............5 (4) PFUYARYTnEATMENT UNffSI POCESSES (a) Septic Tank (sea definition No- 43).......................................,.............---.........................................__.........2 (b) Imhoff TanY...............................................,.........................................:.....----'•------.....------•...................--...5 (c) Primary ClarMers..................................................................................................... ........... I ....... ..-. ......... 4P (d) Sapling Ponds orSetlling'ranks (or IroSa."r, f)or toxic Malarial-- (sludga handling lacilnies for victor purification plants, sand, gravel, stone, and vlrar a'ning cparalioro oscopt recroalionat aclivilios such as gom orgold mining) .............................. ..........,........ .............. ...................... ................ ................................... 2 (5) SECGN kRYTREATM8Ji LNITSIP ADC ES ES (a) Carbonaceous Stage (I) Aeration -High PuHly Cx,;enwyslom................ .............................................. :................ 20 Dif(usod Air Syslern.......................................................................................................t 0 Mechanical Air Sys:er: ! xad, :floating or rotor)..........................-........................----.......--..f Separate Sludge Rezora:.-rt.............................................. ........ .......... .--.................. 3 Tdcxling Ftar HighRate............................................................................................................. 7 StandardRase...............................................................................................................5 PackedTower............. .------•....................................................................................._..5 (vi) Biological Aeraled Filler c: Aera:ed Biolu•21cai r'tkar............................................. ............... 1 0 (iv) Aerated Lagoons............................................................................................................0 (v) Rolating Biological Coniz:ors .......................................................................................10 (vi) Sand fillers-inlermiller biological ..................... ......... ........... .......................................... Recircutatingbiological- -- ---------------------------- ---------------------........... I ............... ----...... -.....3 (vii) Slablllzalmn Lagoons... . ...........................................................................................5 (vni) Ganifnr.......................... ..,................. ............. .................... ......................................... 5 (is) Single slago system for o ;tb6ied carbonacoous removal or B00 and rnitrogon>us ronlr�upl by nitrification (see dehnhicr: No. I2,(Poinls for Ih:s ham h a�:o to bo in addilion to ;toms (5)(a)(i) through ullli?Ing the ortanded aotafan process (soa dollnhion Nc,.3a)...... ....... .............................i ulifiXin3 whar than Iha extanded aeration prow&s............ ................... ......... ......... ...........(! (z) lJulriont adc'tions to enha-m LL 7 rernoval......................................................................5 (z!) Biological Culture (-Supe- Bugs')addilion ....................................................................... 5 (b) Norogonous Siago {tJ Aeration - High Pu:'y rz:!,V1on Syslom........... ......... ...-.......................... .......................... 0 Diifusod Mr System......_...................................................... .....1 0 Mechanical Air System ;`:ad• I:;a1in;1 or rplor),. — ...................................... ........... a Separato S]:rdgo fly& 'a--: '. ........ ..................... ........ 3 (d) Triciaing Frnar-filigh Rxe ...... ......_ ....... .. ............... ........ ._.._.... ............ - .7 Standard rate--.. .. .... .. ..... ....... ........ .... ... Packed Tot,ar....... .... ........ .................. .. .............. .... ........ ... ......... .............. i (lii) Biological Aaraled f-:! r i AardrG'tj Ilio]ogiCel f,':r•r.............................................................10 (fv) Rotating Biological ................, .......----'--- ------- ---'----'----------............ -10 (v) Sand Finor - intormilit.r„ "% lgieat_ ........ ..... .__.........._. ........ .-_..,........ ............. flocirculaling binlo:;.cal, ........ ....... .... ......................... .......... .........".. .:r (vi) Cka'Fur...... .......... ...- .... ....... ......., ............ ...........__. ....,....' •1i (G) Iciri r+i?Yoff ADVlJ':_Ci)TRv: 4IjfrLxj iC',',r.)C (a) Aryivalod Carbon Bads - without carbon ra-10:,6r01rt " . ..................._.......... ........ -... ... ....b with carbon re(hir+,irati0n... ...... ..... _................................. ................ ......... ........1:, (b) Powdofc-d or Granular Aciivalod Carlsjr, : t- ; wiihota carbon 10gnnorl: ^C .,.. _. _., _. .. ............ .. ........ .... .... ... ..:. -, 01 cartlmt raft nora�ror•.. .... .. _ .. .................. .......... .. ...... ....i .': (c) Air strippirg .'--'.... .. ..................... .. .. _ ., (d) Danisrilic�licn i'racost:............ ....... (0) rinriludialysis... ... ,... (Ij f oarn (ti) ton L,:ctrmgc•. (fr) l.MV! 1pl,Lc;alion of Tri�atad t aL,t•r=: {•. r•Z d•' .:.;t I:-. :': .,} rr-•�t :,, ;,1,-,.tL:�: I., ..a art. il: ,r: ,,!. r.:�.::,, ar•} np'.•:r ::imiiar nuain,j al,t�:.+l.a:��.} ,. t:1n c�h!lr;�'�:r,:, .. .... ...... /-� - i `• / Of 0.1:c t 0!.r ItJraovat :-� f11r.-.,�. .d r`r, -.. a :I' (s.} i'. n•.I,u i;i p„n!!< - +.dhGul .t c, .,t:n•, ••:rill ..-,,. f.1 t,. r , 0111 (u) Iwo;!nont p:ocossci—_ w runic::: o: n»1al c cy::l,:'1c.................... ............. ........ .......... ................) , (p) Irt"ImOrl proc0esos Icr rornwa. of toxic rnaV,hai�; r:)la; Than rnt•:::! or (Nall h...... .............. ..... ........ ......i S S!udgo Dijoslion •lank. - lie ::? (an:lorobic)................................................... ............ ...................10 r Unhealed (artaorol,lc).... ...... . ............. ...................... .....3 ( b) sit Jgo Stabilization (chemical c' :!,,nn:d)...... ............. ...... .......... .____ ........ ........ .... ..................5 (:) SitljgODrying Bods•Gravily._ __....-.. _ .._ .......................... Vacuum Assislad............... _.. .. ._._.......... ....... . (d) Siu:.tlo [Outstation . .............. ... ........................ {a) Sluilgu Conditioner (chamicacr Ihnnnal) .... ..._.. ...... .................. (I) Siudgn-[hickanel (gravity).-. ................ __. __ .. .. __ ...... (g) DiwAtod Air Rotation Unit (r.L' a:,p6caW,, to a un"r, rx'od as (3)(i)) ... _. ........ _ _... ........ ........0 (hj SIYLJ0 Ras Ulilizal6n (inclur.-.: gas s!vraguj.... _...... _........ ......1. ........2, (i) SI'.iga Hokin) Tan'. . Awa,:t,: ..... ........ .... . .........-... ..... .......... 1; f•i"):awalud........... .............. ................. ....... .......... ....... .. .... ........ -. O) fudge InciMralor (n•)I includr,_ activatod cart,cn re•�.@neralion)............... ..... .. .. ...... .................10 (F;) VICUurll filter, Contr, uo0, of F 'a: Pro'!: or olhor similar rfr,wa!or:^d de1i:,,`,....... ......... ....... .......1 Q (8) fll_SIDUALS UFIL17ATIO[,!lDISPO'' ,L (incluid „ir•:ir>Y todar.l ........... ..... ....._. _ .....- .-... ..._...l (bj L rd AF4)licatlon (surfaco and s_tsuriace) (soc drfirn:.:-In 21a) by contlaciing to a land applica i l opofaulr or land', cporator v::. holes Iho la- i -,,pli'a!' ;,nmli: orlaodlill peffnil....................................................................... _..... .... (c) Dedicated Landliil(burial) by I, ! poviiiuoo of 1ho was:owalor Ir6_::mar,: 1. till;) __ . .....-.... __. ........!• (a) Cf:lodnalion .............. ......................................... ..... _...... ........... .,........ ..........._....' (b) De:hiorination ........................ ............................................................... ..........I, (c) Ozone ................................... .................................................................... (d) Radialion................ ................. ......... ......................... ............. .......... .......... ......... (10) CHEMICAL ADDITION SY!,TENI(S) ( sea 62 — on fl,. 9) [rr'I . ppl::ablo to ehen:_al arc:!iom ra ed as lie-- '3)(f). (5)(a)(xi)(6)'(a}', (6)( ). (71)(b), (7)(0)• (ca.- (9)(b) or (9)(c) 5 points each: I....................., ! i,l ..................... _.. ..... _........................... ........................... .......... .............. .................a ........ ............ i i_...... ( 1 1) J.USCE3_UNECUS UNITSPR*DCE:.:'=S (a) Holding Porels, Hold:-e' Tanis :" S:!;ling Ponds for C.'.=aic or Tcxic Id.-:•or!ls I. cluc:ng tees;;_ rom mining operations containing nitrogen - phosphorus corr.p;:ads in zmo_nls < <:ei.:a 'y groa:0a t a ; is cc' -Mon for domestic wast0wator........................................................................ .................... I...... .. (b) Effivonl Flow Equalization (ricii F�:plicablo to storage basins which aro inh.,ront In la,--' applica::-i systa-rs)..x..2 (c) Stage Discharge (no: applicable to storage bash: in`ierent in land 2r:.pllcation sysiarns)....... ........ ...... ..... .5 (d) Pumps ................. ............. _.... -...._ ..__ (0) Siand-By Power Supr:y..... ..... . 11) Thermal Pollution Coo rrol Device..................................................................................... .................... TOT/-1 PO;NTS.......................................................... ........... Ct1t4SIF}CATi_Ps C <, _....... _...................................5.25 Points lass Ii.. ..... _.. _..- ._. .._ _...... _-.......26•50 Points r.................................. ...........................................................51.65 Points ................................... ........................... ..... ................. ...... ..6E-Uc Points Facili;ias having a rating of or}e through lour Points. Inctusl:o, du no::,quire a cerlilied opJ!aior. Facilities having an activated stud o process will Lw assigned a minimul-. c'zssificalion o! Class C. FaciG:ios having treatment process0s for li-A roffl7Vai of mot. or cyan::_ +. i b0 zssigned a nli,t;'.um cizssi:;_ziio cf C1,-ss 1: Faeiliuos having lrozlrnwY, process, for lr:e biologic l) romo:'al of pho; '.sus will to as! nt J a rl:nilnu!l: o._ sf c to u' C ass IIL O»S D[FiNITIO;dS file following dolin;:,ons shall a: )!y II "( )ghauI IN, Subc%apl r f;, ,.._11Y:liu-f Call ",n fic-d-, h 1:"' feduci;•_ :r11C :.r..iU' '. L'(J I. .,r. .- al(: :!It:D; �. .!' nolunl" .'; a tY_^:: USe:f Ili Cli:. rn(,ih 1:1 will h,'vr1 a brw ralu v,Iryir.g fro r• h•r) to ughl g,di-:., par m ..a pa: !.'luarr !: ,i :.,,- :cay b e :'`ar u,':rNY o: nacv; r:, . :'I b(s:c Ca(t;-in w: m }' riot t,,j rupriarl.tnd oil Ihn V. ;SIOVii'nf IrPnlrflnfl( I)kV! rlle; (21 Aerated Lagcins A basin in which aii sullds ate n in:s nl•:1 in s,. 'n :an ar.J b) which '. ,logical -%:daIi -. or organ'': manna it _Jueu; ;rimugh ail! 7 rCe:orued lransinr r! oxyfgnl un a llove !hrough t):r is; (3) Aeration. A pfochf.l of brin_-mc; abovl inlirnale conlar( bViweC;l . or h,t}h pun! ulyr,: in .1 figi- ,. by !y,f2�;v:y, S_:atwrs or -:,lionJ3a) /-.n(a: ..n /,tl :,(tiv:,in,! !.fV(1l•1, lit. .,l!.: V":',/ing a r,I::,:Inuf11 !l}dl:lll!Ir , ^•i•,:'. tw',, I,! le ):', -S (4) A,,Irreulluiaih' Illan .god !; If,l. Ai ii Sale rill which a crop ,:. produc(-. ..;ovior,4, .,rid (r;frli ,. _.ude` ": a`;t-U 1, �':.':ifs,, Ifni-: etc.); (5) Air Siril4ling. A protons by 1'.,ach Il •:I annnonioln ion i. lir.',I arr•:',.;d to dlf,sok, tl arl.rr.,ni;t (pi aJ .,s!r.nnl) will, :.a ammor .::hen r:.'•iasrd to Ile, a1mcs[ihc-is by physical moans; oc u.Ilyw strider p!ocessos ,',hick ran,;. ;ddrofCQrll pf. tr i s :r.h as L. _vnu, Ic•:rrnl, ;. : zyl0r• : (s) Carbon flogor ,ration. rlw i _ •;rr,rat•en of oxhauslod C..IWn In a C,! a Our::: i is :,:U":I 0 os, null 1.:g1) lu:._ _.aiwus w.' : "1 volt .da :!bsorbed impurities: (i) C. Ibonaccious S!a!fe. it ,I.iz:t, of ve;:Llewalor Iraalfilt-W dvslgnc•'.: ,=lnfren-sr,-oexiary' 011lu0nt C',I Cantrifugo. A mechanical ci0vlc0 in w!lich conifilugal IwEri i!, u -:..., wlp.va:o soi,J:. Lori. I lulda or (hffere imsiti! (I)) Ctiwnlcal Ad(:i;ioi: %ysturl Lr,- 'Ilia ads:.iibll of Ci lefnlC:II(s! to 1Y;!:.' :f ..I :III alit 'i.1:;•. ;/'I't; lo.' ! J!JJ £. ill i;lli !:: ;,Cc, !:Ullrt.. "1(IVaI, rtI a01uS!I11rr:1 al%:o0oily control. rile.• :ho Lallal•itl:)' In al"011n)(Jol with (I,ll"u.n: Lh•,r: .".. il:,.f [:.!(Ut ol1: :l!; ,:.'.n:I;,n p(J,f:!!: ;0 L f.::1'O .l !�. ••�. ,:. If; •.t:.`. -� ! bo I. W iSidt, 4,d tit .,-thorn; tho capability to add ch0!::1'. aI(sj 1-, (lua! unit:: %.,.Ii I'd ratud .1! „ :}'`le::l; C. Is,0 .: f ! . mld .l ..:,;�. �l a di:!._.::)i app;i,-. ; n po.r'.s for l:l::nnil,l 1iur; risen will fOlufl In tll0 S'j:.1111)ls Win,; ra!od ar. n,,paral.) In (':i lrjfilx:al `.lu(fn(1 Colldtllollin . Ilv ;akk alfl of a rh,•:„i:ll Clll:`; •; ,'I, :. L'.. !1 :1; II:1:?, left,'. !!Ili, fl!f tl, .l i,'..�.';Itli !„ ,• . :,:IJf I(f fr ;,, ; J;1ifr w f; l:•.'.l .. 1;', .. ",h";:I loll to a. (+•: ,:,l tll!: (!•'..: I• i'I.I•'.. r'la!,c f! C}'1-i,l ii':..,rl:'-, ..I ;tail: �,'.II I\):',l}�: •!f 11.)It'. •:I I,!I' .. ,:,n,(„I' , 1'r:l'.'•: /:.l'„f (.-(` .'1 is l:. .n If) • l:. „!1"1 �'. .. ',1:1 '...., ( 7 I ,. Y l•' ,,.. .. r.rli!.. ...ra,•. .: t.,!I :,... , ... • ., .. •. ... . , •).tell,. � i.,. ''it ,,, .,,: ar .rtp..... •, ' ! ., n!.:n ,t !v,' .. . ' r! t .•I: . , .. - ... !, i'hn r. „ .. .. .1: '.1. � .. .. - ,.., •,I t'' .,K .. , - r (is) Elecirodalysls- Process for removing Ionlznd ire born water through Cho use of ion%so[ociivo lon-ozdaango munibearv)ic; ' (t6) Filor Pross. A process operated muchanlcally Ear panlalh' dwvalorirag sludge; (17) Foarn Separation. Tho plannod frothing of wastowafor or wastewater aatuont as a moans of romoving tikesn'-0o amounts of dworllo :rater;al-: ttroa{yh the Introduction of air In the form or fino bubbles; also called loam Iractionation; (15) Gril Removal. The process of romoving grit and other heavy mir,aral matter from wastewater; (I$) Imhoff Tank- A deep rave story wastowalor :art, consisting of an upper sodimorrlafon chamber and a lower sludge digostlort dlarnbe:. , (20) Instrumented Flow Measurement. A device which indicates and rocords rate of [low; (21) ton Exchange. A chemical process in which ions from two di!forart nnlocules are oxchangod: (22) Land application: (z) Sludge Disposal. A final sludge disposal method by which wet sludge may be applied to land eithor by spraying on the surface or b, subsurfaco injoction irl.e., chisel plow); [not appllcablo for types of sludga describod in (I i) of this Rota): (b) Treated Effluent. The protest of sprayln5 treated wastewater onto a land area or other methods of application of wasteware: onto a ianrl area as a means of linal disposal or treatment; (23) Microscreen. A low speed, continuously back•washad, Totaling drum litter operating under gravity conditions as a polishing rselhed roroving suspended solids from etlluant; (24) Nitrification Process. Tho biochomical conversion of unoxidized nitrogen (arnmonia and organic nitrogen) to oxidizad niirogon (usua niiralo); (25) Nitrogenous C;ago. A soparalo claoo of wastewater traatmonl designed for the speeilic purpose of convorting arnmonia nitrogen t: rilrato rvtroge:,; (26) Phosphaie Removal, Biological- The removal of phosphorus from wastewater by an oxidanoxic procoss designed to cnharro ;vxury �,7tako of phospharus by the mlcfoorganisms: (27) Polishing Ponta. A holdng pond lollowing secondary treatment with suflicionl dolenlion lirno to allow sollling of linely suc,,er.dod sc;ids; (28) Post Aeration. Aorallon foflowing conventional secondary Voalrnent units to increase effluent D.O. or for any other puipcie; (29) Post Aeration. (Cascade) A polishing meihod by which dissolved oxygen Is added to the offluanf by a nonmochanical, gravity mnar•s M IIrj?&U d. , n a series of steps or weirs; -rho flow occurring across t,A slops or woirs moves in a fairly thin layer and the operation of Iho cascade roquiros :-.: operator adjustment,- thus, zero points are assigned even though this Is an essential step to mooting Ira limits of the discharge perm;; (30) Powdored to Granular Ac;ivaled Carbon Food. A biophysical carbon process that ulillzes biological activity and organic absorption b;: using powdorwl or granular activaled carbon; Virgin or regenerated carbon is load controtiod into the system; (31) Preaeralion- A tank constructed to provide aeration prior to primary Irealment; (32) Preliminary Units. Unit operations in the troa[merd process, such as screening and comminution, that prepare Ilia liquor for sebscq_,Inl major operations; (33) Industrial Pretreatment. (a) Pre-treatment UM, Industrial. The conditioning of a waste a[ its source before discharge, to remove or to neutralize substarr_es ir.crious to sewers and treatmont processes or to affect a partial reduction In load on lie treatment process which is operated by the same govarrung body as ;he wastewater treatment plant being rated; b) Pro -treatment Program, Industrial - must ba a -late or EPA required program 10 recoi`re points on the rating sheet; (34) Primary Clarifiers. The first settling tanks through which wastewater is passed in a treatment worms for the purpose of removing ser.:eable .and suspended sorrels and BOO which is associated with the solids; (35) Pumps. All influenl, effluent and in -plant pumps; (36) Radiation- Disinfection or sterilization process LtWizing devices amitting ultraviolet or gamma rays; (37) Reverse Osmosis. A treatment process In which a heavy contaminated liquid is pressurized through a membrane forming rrxadf pure !i,;-id Iroo from suspended solids; (38) Rotating Biological Contractors. A fixed biologic ] growill process in which wastewater [lows through tanks in which a series of parties::y submerged cirwlar surlaces are rotated; (39) Sand Fillam: (a) Insermriient Biological, Fhration of e{ifuorn roliovring sop0c tanks, lagoons, or some other treatment process In which further bic•:!acompcsition is expected Ic produce desired elfluonls; Hydraulic loading rates on these litters are computed In gpdrac and have a rosuhing Icw gpfrlsl floss Than one); b) Piacircu[atirrj biological - the samo type of sand filter as dolined in Subparagraph (39) (a) of this Rule with Iho added capability to r=; tie olfluont b-ck through the sand lihor. (40) Sand or Mixed-Meda Fitters. A polishing process by which a;9uerA limits aro achieved Through a furher reduction of sufpandsd s•olis; (a) low rate -- gravity, hydraullcally loaded filter with loading rates in Cho one to three gpnvsl range; (b) high rain -- a prossuro, hydraulically loaded lifter with loading rates in the five gpf vsl range; At arty raso. the loading rate wll exceed brae gprrV. 1; (41) Secondary Clarilium— A lank which follows the biological unit a truatment plant and which has ;he purposo of removing slad;;as .ssoeialoo with ll-,a biological Irealmont units; (42) Separata Sludge Reaoralion. A parr of the contact stabilization process where the acliva:cd sludge is transferred to a lank and aera'c-d bororo rotuming is to the contact basin; (43) Septic Tank A singlo-story settling tank in w'tich senled sludge is in contact with the wastewater flowing Through lha lank; shall r.t bo applicab;a for soplic tank systems serving single family residences having capacity of 2.000 gallons or less which discharge to a nitrification':iold; (8f) Sludge O:gestion. The process by which organic or volatile master and sludge is gasified, liquefied, mineralized or eonrortad into morn stabia organic mallsr ilrough the activity of livirxj organisms, which Includes aerated holding tanks; (45) Sludge Drying Beds. An area comprising ratuial or aridicial layers of porous materials upon which digested sewage sludge Is dried by rmina;a and ovzporafion; (46) Sludge E;etrimion. A process of sludge condfioning in which certain constituents are renoved by successive washings wah fresh wa;ar or plant eltiuonl.- (47) Sludge Gas Utilization 'rho process of using sewage gas for the purpose of heating buildings, driving engines, rile.; (48) Sfudga :-{o!ding T rank (Aoratod and Nonaeratodt. A lank utilized far small wastowalor Iroalmenl plants not containing a digester In which Mudge may be kept fresh, and supernatant withdrawn prior to a dr ing method (i.e- sludge drying bp-ls); This may be done by adding a small amount a' air simj.fy to troop Iha sludge fresh, but not necessarily an amount that would be required to achieve stabilization of organic matter. A nenaeralad lank would simply be used ;o docAMl sludge prior to doyea[oring and would not aGow long periods (several days of detention) without resulting odor problems; (49) Sludge incinerators. A furnace doslgnod to burr sludge and to remove ail moisluro and combustible materials and reduce tftij sludga ;o it sterile a h; (50) Sludge Stabilization (Chernical or Thermal). A process to make trealud sludge less odorous Fmd putruscblo, and to reduce ti,e organir.rn conleni; This may be done by pH adjustment, chlorine &)sing, or by heat voalrnont; (51) Sludge Thickener. A type of sedimentation lank In which Iho sludge is pormi;lr J to salilo and thickan through Igilation are] graV,:1; (52) Slabift,:'-n Ltgson. A typo of oxidation Ira Jran in which biological oxidation of organic matter is olteclad by natural Iransler of o>;;ion to t€to water front air (not a p6ishing pond); (53) Saand-ey Power Supp€y. On sita or porw to Canrical goneraling oquipmanI: (54) Static Scaoons. A stalior-try scruon designed to romave solid-, inclu dins non•biodogra(Jabie particulate (floatab'u :-Aiids• suq)ondwf a .'arts and DGi' reduction) tram municipal and industrial wasiow'tic; troalr„ant systems; (55) Tertiary Tmalmom. A stage of Irealmoni follnWrig secondary which is primarily for Ilia purpose of oflluonl polishing; A sapling lagoo-, a sanJ or ca3i li;tur might be errployod for this purpose; (56) Thermal pollution Control Device. A device providing for !Fit transler of heat from a Iluid Ilowing In tubas to another Iluid outside [tv, lutes, or vivo vws:r; or other rnezns of rogulaling liquid tomparalures.- (57) Thermal Sludgo Conditioner. A conditioning procoss by which hoa; is added for a prouac[od period of Brno to irnprovu this dav;ala::!Afily of siuc',,-• by firer sotubilizing and hydraulizing of the smaller and mare highly hydrated sludge parliclos; (50) Toxic Maiorials. Thoso wastes or combinations of wastes. Includirx] disoaso-causing agents which alter discharge arxf upon exposuf,). Ingestion. l,hahl!i• :, or assimilation into any organ;sn,, niihor dlroctly from tho erninarlmonl or indiroctly by irvoslion through', load chains. wig causo doath, disaa :n, bahaviwa: abrormalitios, cancer• gonotic mutations. physio;o;tial mallunciions (including malfurY•lions in roprcduction) or physical doformanion,7.- in svrh or{yinisus o: tilt -if offspring; Tcxic malorials irr_ludo, by way of illuxlr:.: an aAJ not ftnu6Ation: toad, cadmium, chromium. mercury, vanadiu-11. arsenic• zinc, or+a,-nino•cf,tur:?,unzona (ONCS), poffchlorfnated biphonyls (PCBs; and dich'orerlirri3nyl Iricldoroetfkino (DDT); and any other matelials that have or may hcrnir;t�-.r i;o a:cr[o:minr•.i to 1.1ra toxic proporins: (59) Tiicklin-r Filtor. A biological lroalmord unit cars"aping Gf a profit riaf such r�s broken Mono or roe:k over which wastowalor is diSlritralr, A rater Iii,'Mulft filter is ono which epara;rxi at bctiwoon 10 and 30 it —I par acre. A love rile Irie.Wing liltur is ono which is ckat.ignod to opanue al all.) In I r;r m-0 pur ;.,; (GO) TrlcHinr; Fl[;or (f'acl;crl Toiver). A plug flow ly} - aft orDruio;l in which •.%mslomder finwi; down;hroagh successivo layer:: of F;vxdia r,r' tralo nt;nr,n.:l, tl.,t;tru'- millDrlal Is romo,o:l condnually by Ihn oclh`o blo:cp% a1 lieu' grmtrth In n.tc.:t sucryn'sivo layer, l III!; rnntha;j n,ay produca 'sucono,uy- ;I, ..i:; f r,llia,,nt, ur ::I t:o tdapcod to ;,roduca o nitrilioi€ „Muons; (tit) 1'Rcumn Fil;or, Conlri!i (ws, nr !°align f'lw; !. w; i'-U': i_e5 .vNeh .flu rlr:,,:;"!,': to ranxwo oit:ot'•5 y::Frye Irtmi will/,f f€.,;11!.1 d Of at, t•„-'v.li„S •.''i r�Si, l,r i�a t� Or lurtflor IreatrnanT.