Loading...
HomeMy WebLinkAboutWQ0010383_Final Permit_19950413State 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 April 13, 1995 Mr. Billy Pell, Town Manager Town of Pilot Mountain P.O. Drawer AA Pilot Mountain, NC 27041 I m 3W I DEHNR Subject: Permit No. WQ0010383 Town of Pilot Mountain Land Application of Wastewater Residuals Surry County Dear Mr. Pell: In accordance with your application received on December 12, 1994, we are forwarding herewith Permit No. WQ0010383, dated April 13, 1995, to the Town of Pilot Mountain for the operation of a wastewater residuals land application program. This permit shall be effective from the date of issuance until March 31, 2000, and shall be subject to the conditions and limitations as specified therein. Please pay particular attention to the monitoring and reporting requirements contained 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 North Carolina General Statutes, and filed with the Office of Administrative Hearings, P.O. Drawer 27447, Raleigh, NC 27611-7447. Unless such demands are made this permit shall be final and binding. If you need additional information concerning this matter, please contact Mr. Randy Kepler at (919) 733-5083 ext. 544, Sincerely, Presto ard, Jr., P.E. cc: Surry County Health Department Winston-Salem Regional Office, Water Quality Section Winston-Salem Regional Office, Groundwater Section Brian Wagner, Groundwater Section, Central Office Training and Certification Unit Facilities Assessment Unit P.O. Box 29535, Raleigh, North Carolina 27626-0535 Telephone 919-733-7015 FAX 919-733-2496 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 RESIDUALS 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 Town of Pilot Mountain Surry County operation of a wastewater residuals land application program consisting of the application of a one time application of 200 dry tons of residuals stored on site and then approximately 22 dry tons per year of residuals from the Town of Pilot Mountain wastewater treatment facility to approximately 49 acres of land (excluding buffers) in Surry County with no discharge of wastes to the surface waters, pursuant to the application received on December 12, 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 be effective from the date of issuance until March 31, 2000, and shall be subject to the following specified conditions and limitations: I. PERFORMANCE STANDARDS 1. The Winston-Salem Regional Office, telephone number 910-771-4600, 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 residuals to a site 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. In addition, the Surry 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 assimilate 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. 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 program. 5. In the event that the land application program is not operated satisfactorily, including the creation of nuisance conditions, the Permittee shall cease applying residuals to the sites and take any immediate corrective actions as may be required by the Division. 6. Some of the buffers specified below may not have been included in previous permits for this land application operation. However, any sites or fields that are included in this permit, but were approved with different applicable buffers shall be reflagged to comply with the below buffers. 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 approval from the appropriate DEM regional office, b) 200 feet from residences or places of public assembly under separate ownership for subsurface residual 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 any public or private water supply source, waters classified as SA or SB, and any Class I or Class II impounded reservoir used as a source of drinking water for both methods, d) 100 feet from any streams classified as WS or B, any other stream, canal, marsh or coastal waters and any other lake or impoundment for surface application, e) 50 feet from any streams classified as WS or B, any other stream, canal, marsh or coastal waters and any other lake or impoundment for subsurface application, f) 50 feet from property lines for both surface and subsurface application methods; g) 50 feet from public right of ways for both application methods, h) 10 feet from upslope interceptor drains and surface water diversions for both application methods, i) 25 feet from downslope interceptor drains, surface water diversions, groundwater drainage systems and surface drainage ditches for both application methods. 7. A copy of this permit shall be maintained at the land application site when residuals are being applied during the life of this permit. A spill prevention and control plan shall be maintained in all residuals transport and application vehicles. 8. Specific residual application area boundaries shall be clearly marked on each site prior to and during application. 9. No residuals at any time shall be stored at any application site, unless approval has been requested and obtained from the Division of Environmental Management. 10. Maximum slope for residual application shall be 10% for surface application and 18% for subsurface applications. 11. When wastewater residuals are applied, the Class A pathogen requirements and site restrictions in 40 CFR Part 503.32(a) or the Class B pathogen requirements and site restrictions in 40 CFR Part 503.32(b), and one of vector attraction reduction requirements in 40 CFR Part 503.33 must be met. Additionally, an evaluation must be performed which demonstrates the residuals ability to comply with this requirement. Upon request, a copy of this evaluation must be submitted including all test results and calculations. 2 II. OPERATION _ AND MAINTENANCE REQUIREMENTS The facilities and application sites shall be properly maintained and operated at all times. 2. A suitable vegetative cover, as listed in condition 114, shall be maintained in accordance with the crop management plan outlined by the local Extension Office of the Department of Agriculture, or the Soil Conservation Service, or other agronomist, and approved by this Division. 3. An acceptable pH must be maintained in the soil, residual and lime mixture, greater than 6.0, on all land application sites to insure optimum yield for the crop(s) specified below. The agronomist shall provide information on the pH best suited for the specified crop and the soil type. 4. The application rates shall not exceed the following for the specified crops: CE012 PAN (lb./acre/yr.) Alfalfa 200 Bermuda Grass (Hay, Pasture) 220 Blue Grass 120 Corn (Grain) 160 Corn (Silage) 200 Cotton 70 Fescue 250 Forest (Hardwood & Softwood) 75 Milo 100 Small Grain (Wheat, barley, oats) 100 Sorghum, Sudex (Pasture) 180 Sorghum, Sudex (Silage) 220 Soybeans 200 Timothy, Orchard, & Rye Grass 200 5. No residuals other than the following are hereby approved for land application in accordance with this permit: Permit Estimated Source County Number V lume (fty tons/ ear Town of Pilot Mountain WWTP Surry NCO026646 22 Town of Pilot Mountain WWTP -one time application of 200 dry tr of stored sludge 6. The metal loading rates shall not exceed the following Cumulative Pollutant loading rates: Kilograms Pounds Parameters per Hectare per Acre Arsenic 41 36 Cadmium 39 34 Chromium 3,000 2,677 Copper 1,500 1,338 Lead 300 267 Mercury 17 15 Molybdenum ---- ---- Nickel 420 374 Selenium 100 89 Zinc 2,800 2,498 3 7. The pollutant concentrations in the residuals which will be applied to the land shall not exceed the following Ceiling Concentrations (Dry Weight Basis): Parameters mgLkg Arsenic 75 Cadmium 85 Chromium 3,000 Copper 4,300 Lead 840 Mercury 57 Molybdenum 75 Nickel 420 Selenium 100 Zinc 7,500 Upon classification of the facility by the Certification Commission, the Permittee shall employ a certified land application/residuals operator to be in responsible charge (ORC) of the land application program. The operator must hold a certificate of the type classification assigned to the land application program by the Certification Commission. The Permittee must also employ a certified back-up operator of the appropriate type to comply with the conditions of Title 15A NCAC 8A, .0202. 9. Adequate procedures shall be provided to prevent surface runoff from carrying any disposed or stored residuals into any surface waters. 10. Surface applied residuals will be plowed or disced within twenty-four (24) hours after application on lands with no cover crop established. 11. For areas that are prone to flooding or within the 100-year flood elevation, residuals may be applied only during periods of dry weather. The residuals must be incorporated into the soil within twenty-four (24) hours after application. 12. 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 residual application event. Such controls may include the posting of signs indicating the activities being conducted at each site. 13. Adequate provisions shall be taken to prevent wind erosion and surface runoff from conveying pollutants from the residuals application area onto the adjacent property or into any surface waters. 14. Residuals 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 residuals disposal measures must first be approved by the Division of Environmental Management. 15. Residuals shall not be applied to any land application site that is flooded, frozen or snow- covered. 16. Residuals shall not be applied at rates greater than agronomic rates, unless authorized by the Division. 17. Animals shall not be grazed on an application site for 30 days after residuals application. Application sites that are to be used for grazing shall have fencing that will be used to prevent access after each application. rd 18. Food crops, feed crops and fiber crops that do not come in contact with the residuala shall not be harvested for 30 days after residuals application. 19. Food crops with harvested parts that touch the residual/soil mixture and are totally above the land surface (ex. tobacco, melons, cucumbers, squash, etc.) shall not be harvested for 14 months after residuals application. 20. Food crops with harvested parts below the surface of the land (root crops such as potatoes, carrots, radishes, etc.) shall not be harvested for 20 months after application of residuals when the residuals remain on the land surface for four (4) months or longer prior to incorporation into the soil. 21. Food crops with harvested parts below the surface of the land shall not be harvested for 38 months after application of residuals when the residuals remain on the land surface for less than four (4) months prior to incorporation into the soil. 22. Turf shall not be harvested for 1 year after residuals application if the turf is to be placed on land with a high potential for public exposure. MONITORING AND REPORTING REQUIREMENTS Any monitoring (including groundwater, surface water, residuals, 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. 2. Proper records shall be maintained by the Permittee tracking all application activities. These records shall include, but are not necessarily limited to the following information: a) source of residuals b) date of residual application c) location of residual application (site, field, or zone #) d) method of application e) weather conditions (sunny, cloudy, raining, etc.) f) soil conditions g) type of crop or crops to be grown on field h) volume of residuals applied in gallons/acre, dry tons/acre or kilograms/hectare i) annual and cumulative totals of dry tons/acre of residuals, annual and cumulative pounds/acre of each heavy metal (which shall include, but not be limited to arsenic, cadmium, chromium, copper, lead, mercury, molybdenum, nickel, selenium and zinc), annual pounds/acre of plant available nitrogen (PAN), and annual pounds/acre of phosphorus applied to each field. 3. A representative annual soils analysis (Standard Soil Fertility Analysis) shall be conducted of each site receiving residuals 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: Acidity Manganese Potassium Calcium Percent Humic Matter Sodium Copper pH Zinc Magnesium Phosphorus Base Saturation (by calculation) Cation Exchange Capacity 5 The Standard Soil Fertility Analysis (see above) and an analysis for the following metals shall be conducted once prior to permit renewal on soils from each site which has received sludge during the permit cycle. Arsenic Lead Nickel Cadmium Mercury Selenium Chromium Molybdenum 4. A residuals analysis will be conducted annually from the date of permit issuance 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 annually, a residuals analysis will be required for each instance of land application. The residuals analysis shall include but is not necessarily limited to the following parameters: Arsenic Aluminum Cadmium Ammonia -Nitrogen Chromium Calcium Copper Nitrate -Nitrite Nitrogen Lead % Total Solids Mercury pH Molybdenum Phosphorus Nickel Plant Available Nitrogen (by calculation) Selenium Potassium Zinc Sodium Magnesium TKN After the residuals have been monitored for two years at the above frequency, the Permittee may submit a request to the Division for a permit modification for the reduction of the frequency of monitoring for pollutant concentrations and for the pathogen density requirements, but in no case shall the frequency of monitoring be less than once per year when residuals are applied to the land. 5. A Toxicity Characteristics Leaching Procedure (TCLP) analysis shall be conducted by the Permittee annually. The TCLP analysis shall include the following parameters (please note the regulatory level in mg/L in parentheses): Arsenic (5.0) Barium (100.0) Benzene (0.5) Cadmium (1.0) Carbon tetrachloride (0.5) Chlordane (0.03) Chlorobenzene (100.0) Chloroform (6.0) Chromium (5.0) o-Cresol (200.0) m-Cresol (200.0) p-Cresol (200.0) Cresol (200.0) 2,4-D (10.0) 1,4-Dichlorobenzene (7.5) 1,2-Dichloroethane (0.5) 1,1-Dichloroethylene (0.7) 2,4-Dinitrotoluene (0.13) Endrin (0.02) Heptachlor (and its hydroxide) (0.008) Hexachlorobenzene (0.13) Hexachloro-1,3-butadiene (0.5) Hexachloroethane (3.0) Lead (5.0) Lindane (0.4) Mercury (0.2) Methoxychlor (10.0) Methyl ethyl ketone (200.0) Nitrobenzene (2.0) Pentachlorophenol (100.0) Pyridine (5.0) Selenium (1.0) Silver (5.0) Tetrachloroethylene (0.7) Toxaphene (0.5) Trichloroethylene (0.5) 2,4,5-Trichlorophenol (400.0) 2,4,6-Trichlorophenol (2.0) 2,4,5-TP (Silvex) (1.0) Vinyl chloride (0.2) 0 6 . All residuals included in this permit must be monitored annually, from the date of permit issuance, for compliance with condition 111 of this permit. Data to verify stabilization and vector attraction reduction of the residuals must be maintained by the Permittee. The required data is specific to the stabilization process utilized, but should be sufficient to clearly demonstrate compliance the Class A pathogen requirements in 40 CFR Part 503.32(a) or with the Class B pathogen requirements and site restrictions in 40 CFR Part 503.32(b), and one of vector attraction reduction requirements in 40 CFR Part 503.33. In addition, the EPA certification statements concerning compliance with pathogen requirements, vector attraction reduction requirements and management practices must be completed annually by the proper authority or authorities if more than one is involved, either the person who prepares the residuals, the person who derives the material, or the person who applies the residuals. After the residuals have been monitored for two years at the above frequency, the Permittee may request a permit modification for the reduction of the frequency of monitoring for pollutant concentrations and for the pathogen density requirements, but in no case shall the frequency of monitoring be less than once per year when residuals are applied to the land. 7. Three copies of all required monitoring and reporting requirements as specified in conditions 1111, III 2, 1113,1I14, 1115 and III 6 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 Noncompliance Notification: The Permittee shall report by telephone to the Winston-Salem Regional Office, telephone number 910-771-4600, 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 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 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 residual treatment. e. Any spillage or discharge from a vehicle or piping system transporting residuals 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. 7 IV. GROUNDWATER REQUIREMENTS 1. The COMPLIANCE BOUNDARY for the disposal system is specified by regulations in 15A NCAC 2L, Groundwater Classifications and Standards. The Compliance Boundary is for the disposal system constructed after December 31, 1983 is established at either (1) 250 feet from the waste disposal area, or (2) 50 feet within 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 remediation 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. 2. Any groundwater quality monitoring, as deemed necessary by the Division, shall be provided. V . INSPECTIONS 1. The Permittee or his designee shall inspect the residuals storage, transport, and application 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 maintain 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 five years from the date of the inspection and shall be made available to the Division of Environmental Management or other permitting authority, upon request. 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 application 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 kept under the terms and conditions of this permit; and may obtain samples of groundwater, surface water, or leachate. VI. GENERAL CONDITIONS 1. This permit shall become voidable unless the land application activities are carried out in accordance with the conditions of this permit, the supporting materials, 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 automatically transferable. In the event that 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. N. 4. The following are approved sites for residuals application (see attached map(s)): Application Area [acres] Site No. _ Owner/Lessee (excluding buffers) 001 Ararat Rock Quarry 49 TOTAL AVAILABLE ACRES 49 5. 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). 6. The annual administering and compliance fee must be paid by the Pennittee 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). 7. 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. 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. 9. 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. 10. This permit shall become voidable unless the agreements between the Permittee and the landowners/lessees are in full force and effect. The land owner agreements are considered expired concurrent with the expiration date of the permit and must be renewed at the same time the permit is renewed. Permit issued this the Thirteenth day of April, 1995 NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION ,k Presto Je'ward, Jr., P.E., Director Division of Environmental Management By Authority of the Environmental Management Commission Permit Number WQ0010383 G1 IWO gat a ��� - �' t`\:_r �. �o � ���/ �: � t;'`!„� :�� `-'� L�� 17 �)�"'J � 'f����l�j C = - � G7 ��, � �' `�1i ��c �`� ���I' ` �J � \,l':� •�i��{� NOW ILA In .14 '(f W cost 10 Th- pl, SI� _.\..� �,r�.._,� _��q � ___` �� 1��( �) � i��"1��1,L ��r P&\ r4 :�k: VIL ui- .. - �tid d" l Y,y� qpd� �a ( /� LM 1v Al CCU 1 . ,v [ 'rLt'. �` r - .'�.. _ iM � .�{,� � •�`��(.y� r2 �. [�yr�.: s[�� r�x.�.'{[ '�.. c f _ [�?1��.�jt ��,. i+ !J!-. .il' �.. .�'� r�' .s +' ;� 5 -s 1i7• < i .a r��yj+'�• R: y, h� r :. i' a..r�4 ".rtrK r` a'. i �.'t' +C r �s {y����l r � �"v:{'•' :�Y''�� '"�• _./ `».:' {Y� r.�4r .'7�...��n- y t !F. '.'f r i. • i�iF�'..Y� •'J' f1{r� .� i,.'4 )��I I�i•• ,/•�f� r4 � Y,:h; i r��• ' �y'�r-1�1ft. w � �y: ��t r.i N{�. �'- �• .. .:11. . ����, ., ..:i�' v� - {► '•�': ✓�' h.l .�7y+. °' r..,h;. t'k�'�5!S S � �. e�..E� f F i� •. �y�n: ::'v ;��i °}. ..... } r. .his, �x 11,, �, � [ �t � .t. , .. ..r�. �'-��. �I=. :IJF;- ![, �' � .i :K'7 ��. ..a Y °�• �1 ,r�r`�,ty3s � ;�`�' d'i•.,�r ��' 1 �� .ti+ '7 :{�'a',. ='j. . Y. rr • �... , ` . �� , °'/t: �. • y[,r; � ::r :." 1- `� �1 �(�� � �{.�1 ��r . '1. I ► . '.a�'�'r�'k •. 4 'F43. y y� p .'.1.� ° f�. r i-r,=;�:..: � `� �:�5 �[]j� � ,� + �'- .�, -S ��� �+ v. yl�' yp . 'iw 11'•r' i s ` - 4F'.'�W J�;•� �y9a i j? .f:r�' 1 ��C`tiv>'�1...: •-{r-,�•, �,•(e �r fCf �.�„� t ' tau 'tr w.,f'�.• .,.h; .. - . •f.7I `,ti.. t'�,.. �7 Ain. '1 i�3 -i� . �. Y: t'I' .•,.+ y r :-:�� %G � �:-hl * � e : -. �•i 'ter -'�3.;_ .M4• }'.i;7a. ry:Y [. •atx�+.`�.�. � r <6 . .,1'�'T�'' � �s �'. 1��•:�" 'i : ;�''i °v w'.' � .. � .. ,,,�y�•t!i .. j� �:��• •-3 -�'V. '. �+ � -- ����} y:'•:•',�'"',b•r: �.�, _,•"'€�ra .�°'. �'�{�[/ �, �• '.c t. - ,'�?_�-, r.`Cri y ' 7�[ y�r '� %��''''f'`,�,ta'�a { %}�+1 '7t¢. e�'.•�� itk- � r • cif .: � .�.'.!' ,Sv Y''"�.a• • +W -.. _y :, :��+ _ � � r. Ay TV �:l^: �r J "�„ ' -r3pi tfi � � !,. �::�.. �i ^ - "��y'r`,�f: :•^ �� � * Q� . ; h Q' 'r -r,. •MT =. rf .'fi:}r� b•e•f"''.'� ��µ ��I -/•' 4•7{,�• -sly •. r}.. C \ - ..3.�,- " •,' ,S 5-i`',Y,�a [ v_;sr• s.',.,r;a ry ,. i�!r y� _ a:"�•,, .a°:d7 ` } r Yi,;:It.^.0 M '�.. •.. ^['.P"^ ... !y' � y: ' � _ .7c. ' ?,�/" �'� "1.'• y, • �wi - 7: .. � r ry Wr � {s ' 1.. �° x' '7 i� , � tA•x -. �+. w ,, s.�i1... i.. 5i-. �s� „�•�. ,�k, '- .� �j�. - � • r �a, - - � _ - \ i f`q'y.abAC •° - ,i'� - 1�� '�/ t� tC�,i t .p err..`�r.z. �., j'- 4[• ..fir ':. . �,'� . •�r. - tn["r�.. -4 e.. ,�\ �_' - il�ri +�+s!'+s4r�.��• + .: '�v � -�1.7 ;�_ �f[ � �' r t ,�.1 ♦ s - •r.a.' --;4 :p ` - - - `.....vim' _ - 1140 174 �\ rr''Q���17.56 Ac, ' , 1 18.5 Ac.4 r r: 0686 Of .12300 4 �P Ir 12 Ad k '. -• _ � - 1J a".i� .: S Via. �- I RATING SCALE FOR CLASSIFICATION OF WATER POLLUTION CONTROL SYSTEMS Name 'of Facility: 1 w or P 1 L_aT MOur,_)rAll-4 Owner or Contact Person: 16 1t_tN EZ-L , HA —A ht-RR . 1 ay4+J Mailing Address: ?-0- LbRAu 99 &A_ County:. S %J F:!F-Telephone: - Present Classification: New Facility. Existing Facility NPDES Per. No. NC002(prgoNondisc. Per. No. Health Dept, Per. NQ Rated by; a+4n�( Telephone:733-r 3 Date:4-�O'4S Reviewed by: Healtin Dept. Telephone: Regional Office Telephone: Central Office ORC: Grade: Check Classification's): Subsurface Spray Irrigation Wastewater Classification: (Circle One) 1 11 ill IV Telephone: Telephone: LandApplication X - Total Points: ----------------------------------------- CaPLANPROCESSES AND REI.A7EQQ0WRCLEQUlPMENFr WHICH AR= AN KT PART OF INIQUSTRt ' PRO ' TION SKA' t, DT EE CO�5!DFRF©w.ASTE TREAIM-rUI M THE PURE! c OF CI ASS'.QATIQY 1 ALSO SEPTIC TANK $YEFMS QQ62SIJN3 (Xi YQF �iE �, TANK AND GRAVITY NITRIFICATIO''f LI'JFS ARF EXEMPT FROM atjtjj5IFiCATM 8USSURFACE CLA5SFr_ATK)N (check 0 units that apply) 1. septic tanks 2_ pump tanks 3- siphon or pump -dosing systems 4. sand filters 5_ grease lrapinlerceptor S. oil/vraler separators 7. subsurface treatment and disposal: ------gravity pressure SPRAY IRRIGATICN CLASSIFICATION (che6: al€ unils that apply) 1. preliminary treatment (definition no. 32 ) 2. lagoons 3, seplic tanks 4. pump tanks 5. pumps F,, sand filters 7. grease trapinlerceplor 8_ oilrwater separators 9, disinfection io. chemical addition for nulrientlalgae control 11. spray irrigation of wastewater Pretreatment of wastewater In excess of these components shall be rated using the point rating system end will require an operator with en appropriate dual certification. IA`Jd APPLICATIOWRESIDUALS CLASSIFICATION (Applies only to permit holder) 1. Land application of biosolids, residuals or contaminated soils on a designated site. WASTEWATER TREATMENT FACILITY CIASSIFICAT0N The following systems shall be assigned a Class 1 classification, ru less the flow is of a significant quanlily or the technology is unusually complex, to require consideration by the Commission on a ca<e-by-rase basis: (Check if Appropriate) 1 OiUwaler Separator Systems consisting only of physical ser=_ralion, pumps and disposal; 2. Septic Tank/Sand Filler Systems consisling only of septic tanks, dosing apparatus, pumps,sand fillers, disinfection and direct disc.`targe; 3 Lagoon Systems consisling only of preliminary treatment, laccont, pumps, disinfection, necessary chemical treatment for algae or nutrient control, and direG discharge. 4. Closed -loop Recycle Syslems; 5 Groundwaler Remedialion Systems consisting only of pumps, air -stripping, carbon adsorption, disinleclion and disposa!: E Fish larms with discharge to surface wafers; ?._Water Plant sludge handling and bacit•wash wale., irealmen: E Seaford processing consisting of screening and disposal. t Single-family discharging systems with the exception of Aercbic Treatment Unhs, will be classilied if permilted alter July 1, 1993 or it upon inspection by the Division, it is loun:'nal the sysierr, is not being adequa!eiy operated or maintained Such systerns will be notified of the classitica! -n or rectassilication by the Commission, In writing. The Wilosr;ing scale is used for rating wastewater treatment facilities: (circle appropriate points) (TEM. POINTS (i } IndLISIrtal Pretrealment Units or Induslrlal Preirsairnenl Program (see definition No, 33)...................................................4 (2) DE'';GN FLOW OF PLANT €N gpd (nol applicable ,o non-contaminaled cooling waters, sludge handling la6k6i)s for water pu6fication plants, totally closed cycle syslems(see definition No. 11). and facilities -� ccnsisling only of hem (4)(d) or Items (4)(d) and (11)(d)) 0 - 20.000.......................................................................... .................._........,..........................................1 20.001 - 50,000................. .......................................,........................_.......................2 50,00t - 1DO.000.................................................... ................................................... .,........................... 3 100,001 - 250,000...................._................................................_..............4 250.001 - 600.000..........................,..................................................—.5 500,001 - 1.000,000....... _........ ..................................................................................I 1.000.001 - 2,000,000.................................................._...........I..........10 2,O00.001 (and up) rate 1 polnl additional for each 200,000 gpd capacity up to a maximumof........................................................................30 Design Flow (gpd) (3) PRELIMINARYUNfFSIPROCESSES(s"definition No.32) (a) Bar screans......................................................................._.......................1 (bi Mechanical Screens, Slatic Screens or Comminuting Devices...........................................................................2 (c) Grit Rernwa€...................................................................................................................... or (d 1 IMachanical or As rated Grit Removal.................................................................,,.........................._...............2 (a} FbwMeawr€-gDevice ............................... .................................................. .............. ................................ i or (! l Instrumented Flow Measurement.................................................................................................................2 {g) Preaeralion..................................---.........................................2 (h) Inrfueni Flow Eavalization............................,..,,.....,.........,.................................................................,.2 (i) Grease or Oil Separators - Gravity .......... ....................................................... .................................. ......... -...2 Mechanical................_.........................._._........_......._..._.................__.................._..............................1.3 DissolvedAir Flotation............................................................................................................................5 f)1 Prechlerinallon..........................................................................................................................................5 { t } FRiVkRYTREATMENT U41T IP OCESSES (a) Septic Tank (see definition No. 43)...........................................................................................I................2 (b) Imholl Tank ..................... .............._.........---...........................................5 (c) Primary ClarHiers................................5 .......................................................................................................... { d) Sellling Ponds or Settling Tanks [or Inorganic Non-;ox€c Malerials {sludge handling facilities for water puriticalion plants, sand. gravel. stone, and other mining operations except recreational actirAl€es such as gam or gold mining)........................................................................................................2 (5) SEQ :JkPryIREAiMcNTU-47SPFOCESSES (B) Carbonaceous Stags (I) Aeration -High Purity Oxygen System ............... ................ ..................... I ........ .1,...... •1,...... 20 DiffusedAir System ..................... .................................................................................... 10 Mechanical Air System (fixed, floating or rotor)........................................._........................e SeparateSludge Reaeration.............................................................................................3 (II) Trickling Fcher HighRate........................................................... ................... ............ .-........... 7 StandardRate................................................................................................................6 PackedTower ............ ................. ........................................... ...................... :................ .5 (i;i) Biological Aerated Filter or Aerated Biolog'v.1 Filter.............................................................................................................1 0 (iv) Aerated Lagoons... ....................................................... ............................................... 10 {v) Rotating Biological Contaclors......................................................................................10 {vi) Sand Fillers -Intermittent biological..................................................................................2 Recirculating biological ................................................. .................................................. -3 (vii) Stabtkzation Lagoons.....................................................................................................5 (viii) Iiarirar...........................................................................................................................5 (ix) Single stage system for combined carbonaceous removal of BOO and nurogenous removal by nildlicallon (see definition No. 12)(Poinls for this hem have to be In addition to Items ($)(a)(I) through wilizing the extended aeration process (seo definition No.3a)...........................................2 utilizing olher than the extended awalion process .................................. .......................... 8 (x) Nutrient addilions to enhance BOD removal......................................................................5 (xi) Biological Cuiture ('Super Bugs')addition........................................................................5 (b) Nilrogenous Stage (i) Aeration - High Purity Oxygen System.............................................................................20 DiffusedAir System ............ .......... ............................................................................. .... i o Mechanical Air System (fixed, hoaling or rotor)..................................................................8 Separate Sludge Reaeration...........................:.................................................................3 (i€) Trickling F71hor.High Rate...................................................................................................7 StandardRate................................................................................................................5 PackedTower................................................................................................................6 p) Biological Aerated Filter or A.eraled Biolcg€cal Filler ....... ....... ............... ..... ........ I... ............... 10 (iv) Rotating Biological Contactaa......................................................................................10 (v) Sand Filter - inform€vent bit€ogical.....,............................................................................2 Recirculatingbiological.....................................................................................................3 (vi) Cie.*r..................................•-......... .............................................................. ............... 5 ;6; TEP,,I:,=€YORADVAI:CEDTRE.ATMe4TLavrSrPROCESSES (a) Acti.ated Carbon Beds - wi:hout carbon regeneration....................................................................................................5 wi::^. carbon regeneration............................................................................ ......... --- ...... A 5 (b) Powderod or Granular ActHaled Carbon Food, without carbon regeneration ...................................... ............. ................ ........ ...........5 l,A:h carbon regenormion.............................................................. ........... ...... ........... ......75 (C} Air stnpp:r!1........................................................... .......... ............ .... ..,.5 ld; Don:ri4cr.O^P:xoss.., ....... 10 (a) Eloci rodialysls ...................................................... ..................................................,.:.........:.......................5 (f) Foam Separation. ....................... .............. ..................................................,.............................................5 . (0) Ion Exchange ........................................... ... .............................................................................................5 . (h) Land Application of Treated Elllueni (see delinillon No. 22b) (not applicable for sand, gravel, stone and other similar mining operations) by high rate lnfiltralion.............................. ........................ A (1) Vlicroscraeha.............. ..... '.....................,-..........................................................................5 (1) Phospi-prove; Removal by Blalog'wal processes (See delinillon No. 26)........... :................... .......................... 20 (k) Polishing Ponds - without aeration............................................................................................................2 withaeralion ...............................................................................................5 (1) Posl Asrallon - cascade........................................................... i............ ..................................... I ................ 0 dil(used or mechanical .........................................................................................2 [m) Reverse Osmosis .................................. .............,..............................,,....................,...................................5 (n) Sand or Mixed -Media Fitters - low rate..........................................................................................................2 ' high tale ......................................................................5 (o) TreatmerY, processes for removal of metal or cyanide...................................................................................1 5 (p) treatment processes for removal of toxic malarial& other Shan metal or cyanide..............................................1 5 (7) SLUM TREATM 4T (a) Sludge Digeslion Tank - Heated...............................................................................................1 0 Aerobic 5 - Unhealed 3 (b) Sludge Stabflization (chemical or thermal) ................... ..5 {c) Sludge Drying Beds - Gravisy.......................................... ...........................................................................2 . VacuumAssisted ................ .................................,.......................................5 (d) Sludge €luldalion................................................................................................................5 (e) Sludge Conditioner (chemical or thermal).....................................................................................................5 )IJ Sludge Thickener (gravity).........................................................................................................................5 (g) Dissolved Air Flotation Unit (not applicable to a unit rated as{p)(1)).............................................................8 (h) Sludge Gas Utilization (including gas storage).............................................................................................2 (I) Sludge Holding Tank - Aerated...................................................................................................................5 Nort•asrated.............................................................................................................................................2 (() Sludge Incinerator (not Including activaled carbon regeneration) ................................... ...... ....................... 1 0 (k) Vacuum Filter, CenlOuge, or Filter Press or other similar dewalering devices...................................................1 D (8) RESIDUALS UCILI7_A7IOPUDISPOSAL (including incinerated ash) (a) Lagoons................................................................ ........ .................... 2 (b) Land Application (surface and subsurface) (sae delinillon 22a) by contracting to a land application operator or land!itl operator who holds the land! applicalion permit or landli(} permit..............................................................................................................2 (c) ❑edicalled Landlilt(burial) by the parm4tee of the wastewaler treatment lacilily...............................................5 { 9 ; DIShFE� fKN (a) Chlorination.............:..,............................................................................................................................5 (b) Dechlorinalion..........................................................................................................................................5 (c) Ozone.......................................................................................................................................................5 (d) Radiations .................................,...........................................,............................................5 { 1 C } CHEMICAL ADDITION SYSTEM(S) [ sae detirdlion No• 91 (not applicable to chemical addilions rated as clam (6)(b), (7)(b), (7)(9). (9a), (9)(b) or (9)(c) 5 points each: List...................................................................................................I....................5 .............................................................................................I...........................5 ...........................................................................................................................5 ..........................................................................................................................5 ( 1 1) MISCELLANECUS UNTSrPFa_'ESSES (a) Holding Ponds, Holding Tanks or Sapling Ponds for Organic or Toxic Malerials Including wastes frcm mining operations comaining nitrogen or phosphorus compounds in amounts signilicantly greator than Is common for domestic wastewater.........................................................................................4 (b) Effluent Flow Equalization (not applicable to storage basins which are Inherent in land application systems)..................................................................................................................................................2 (c) Stage Discharge (not applicable to storage basins irthererz in land application systems)..................................5 (d) Pumps......................................................................................................................................................3 (a) Stand -fay Power Supply ....... ........................................................................................ .............................. (f) Thermal PoTmionControl Device ................................................................................................. ................3 TOTAL POINTS.......................................................................... C! ASStFlI ATION classI...........................................................................................................5.25 Points Classfl.............. ............. .............................................................................. 26-50 Points ClassIII........................................................................................................51-65 Ppinis CiIV.................................................. ..... ............................................ .... 68-Up Points Facilities having a rating of one Ihrough foul points, inclusive, do not require a certified oporalor, Fadfilies having an aclivaled sludge process wW be assigned a minimum classification of Class I;. Facilities having uealrr and processes for the removal of metal or cyanide will be assigned a mmimum classification of Class III. Facilities having trealrrsont processes tar the biological removal of phosphorus wiil be assigned a minimiern classificalion of Class 111. e??c DEFINITIONS 1`e 10110wing Cabmen& Shaw apply throughout dis Subchapter, (1) Acsiv Ced Careen Beds A physicaftchomlcal M411VC for reducing soluble org—c malenal hem waslawssar alhur..; The col—lypw bads used in this matsw' wi11 have a I.— rala yr ryi''9 horn r.ve to vighl gallons par rrinula per sgjale tool and may be victor upo v dvwnbow carbM bads. Carbon may br may hot be regenerated on ova w V M'ale3 treabnem P!anl tile: , , As:aled Lagoerss A. basin in which all solids are maintained in suspension and by vfNch biological osidation Pr w9onic mauer is reduced asraugh arh5cialip accalocalid translsr of wf9m on a It— Ihrough basis; ('p A.eralion- A p• .ass of kiwIngng about intimate con;acl botxeen 91, a high Punly oxygen in a liquid by spay;, aglalion or dldustonj3a1 Extend„d Asraeon An a:ava:od sludge pioccst untiring a rririrrx'm hyd'asiic detention bme of to hws, (4i Agricuituratly msnagwd ails, My nitw an which a crop is produead. managed, and harvaslad {Crop indudws grssos, grains, trews, ale ); (,l Ai' Ssripping A is, Boss by which die ammonium ion is Nut convened to dsso:vad ammonia (PH 44asrnanl) — rw ar:moria 0"n released to rw aanosphra by phr&ca! R an.; or oreer sir6;v processes which remora Petroleum plo Wcts such as benasrse, ldoane, and xylem: (8; Ca:bon Aagenerafon Tho regonwa6an ol-echausled carbon by one use of s ranaca to rxwide ealrerrsaly high irimperalves which vnaelire and orldira ew absorbed ('. Car%i* aCoous Stage A .saga at waell9wale: roalmsnl dwsigmd Ia .CHI" -seconaa-y' efbuonl hml:s: 16: Cance h*ge A rnechanscal dvvice in whch can:nluga! Iarco is used to soparaua sehces Isom 4.q.ids w 10 fwparale Loads or dal uranl nansibes, (Si C^amlca' hold bM syswms- The add Lon dl 0.mlra ,s1 la wasip ,alai al an apjlcaiim Pdn: 1pr pWrJsfs a: my>'nng .01A. .en'AYa:, Pit atpastes;^: A3.21.1.d+ raRlroi, .!: :e . ca:Mtr• a e: e.r�of,"'t "in d.dafent rhpmvcp'i and oheran:. p,-lpalcat,r r^nls 14 ach.e+o a apt'-.kc resal! ­1 bo considwad Una lyf:s+.^. %-- cApaoto aM' chorrical(s) b d.7ai units will be rated as orw system; capabtfily to add a charrical ■I a dlfwenl application polnls lot ditiwool oirposas wall rastit iry the systems boing filed as Sepafale Systems; (to) Chorricaf Sludge Contfitimf'rv;. The addition of a chemical compotrrd such as lima, ferric chloride, of a polymer to wet siudgg to coalesce the mass prior to fts ■ppticatio' 1a a dawaloring devicg; {It) Vcsed Cycle Systems, Use of haldrrq ponds or holding lar*r for conWrirnani of wastewater confuting Inorgaric, non•Toxlc ma!wiali from sand, grave!, crvshod skorw or oi)ef similar opera" . Such systems shall earry,a maximum of two points ragardfess of pumping raeifities or any othw appvnorun:9s; (12) Combined R9maval of Carbonaceous BOO and Nitrogenous PArnoval by Nivifrcoliorr A sinQ'9 slaga system rec?L;ired to 2CH9,'e pemiil aftivoni t!rrits 0n BOO and ammtnn!a tiungon witNrt lho same biological reactor; (13) Dechiorirsalion. The partial ce complete reduction of rasldual ci'torina In a liquid by any char6cal or physical process; (ti) NritriGealion Process. The conversion of nitrate -nitrogen to rilrogen gas; Eiacvodalys:s. P:ocass Icr removing Ionized "fix from wake✓ lfrough the use of Ibn•se{acxive Jon-oxchanga marrbrarAs; Filler Press. A process operated mocisarica6y Ior'partially dawa!aring sludge: - Foam Sep9ratioen. The pEsrnad froVing of wastewater roc wastewater efauere,, as a moans of removing excessive amounts of detergent malarials through the ,.troductim or a;: In the form of fine bubbles; also called foam (ractipnaEon; (16) Grit Removal, The p•oc6ss of removing grit and olhef heavy rrirw&! matter horn wastewater; (19) Irrhoff Tank. A deep two story wastewater lank consisting of an r,gpar sodimanLation rhambgr and a ioww Z7vdgo digestion chamber. (2o) Insimmanledfio+v Meastxemenl. A dvAca rtich lndcales and records tate of dow; (21) Ion Exchange, A cherrica' process In wfvch ions from two d:lferent motacUits are exchanged; (22) land.applicaLion: (a) Sludge Disposal. A fna: sludge disposal method by which wet sludge may bs applied to land aithar by spraying on the sauce or by subsurface in action (i.e., cHso- plow): )not appl;caUii for types of sludge described In (i 1) or Chas Ride): (b) Tfsaled Ehiwn. The ppcess of sprayiN tr90e0 wastewater onto a land area or othrrr mohods of application of waslewalar onto a land area as a means of final disposal a treamen:, (23) Microscreen. A low speed, continuously back•washad, ralating drum filker opwatirq u^def gravity condlions as a pofiOing method for removing suspended solids from elhue tf; (24) Hit6fic21on PSOCess, The biochemical canversian of urwxidzad ritrogan (amn=4 and organc rxlropan) to oxidized nitrogen (uxu;t0y nitr]le); (25) Nitrogenous Stage. A separate siege of waslewalw traslmenl designed for 1he specific pvposa of converting ammoria ritrogan to nivaia nitrogon: (26) Phosphate Removal, Ocio(, 2L The removal of phosphorus horn wastewater by an oxiclanoxlc piocets designed to ants ca luxury uptake of phosphorus by the mi(xowVsnisms; (27) Po!;Lhing Pond. 1, hcldng pond followng secondary trealmerrt with sulBciaM dolention tiara to allow saitling of 6rtery wren d solids; (28) Posi Aeration. Aeration following corry entionai secondary Voatrr»nl Urils to Increase effluent D.Q. or for any other purpose; (29) Post Aeration. (Cascada) A. polishng rrlaihod by wtich dissolved oxygen Is added to the elhuerd by a nomtedurical, gravity means of Slowing dvmt a series of slaps or waits; The Slow occLrf,-G across trm slops or weirs moves In a fairly thin Oyer and the operator Of the cascade mcpIres no ope aloe ar5,usimonl: Cruz, Zero points arc assig-Ad even Ct j9h. LHs is an essential slap 4o meeting the limits of thw discharge pamil: (30) Powdered to Granular Act'.aled Carbon Food. A blophysicai carbon process that uflizes bidogical activity and organic absorption by using powdered or g•arvilar activated carbon; Virgin or tagartera194 carbon is load controffod into tfna system; (31) Preaeration. A Lark ccrxructed to provide aeration prior to primary Veavr*11f; (32) Prelirninary Urns, W4 oj>:ratiorss in ttra traalrwnl process, such is saDening end corinimfon, thal prepare " liquor la' sttbsequanl major operations; (33) Indvstrial Pfetr9alrnert. (a) Pre-Usiatrnonl Uri!, Inc -stria!, The condlloning of a waste at its sauce bslore discharge, to remove of to neutralize su3slances injuious to sewers and 'reatmenl processes or to abler: a part:a! foduclion In load on the treatmod process which Is operated by Cw same goverring body as the waslawaler treatment plani being riled; b) Pre-troatrnant Progrem• I:sduslrial - must be a Stale or EPA required program to receive points on the rating shoot; (34) Primary Clarifiers. The firs: settling farina Ihro'ugh which waslawaief is passed in a treatment works [of Vlo purpose of femoing sel6aablo and suspended solids and BOO wWch Is asspci]19d with trio solids; (35) Pumps, At lnhuvei. elr.uenl and In -plant p=ps: (36) Radation. Disinfection or sletiiizalien process utilizing devices erritfng uitraviatel or gamma rays- (37) Revarso Osmosis. A titilmenl process In which a heavy contarrinaled liq-id Is pressurized eYough a marnSrane forming nearly pure ligdd free from suspended solids' (38) Rotating Biological Contradcrs. A fixed biological growth process in xiich wasiewatet rows through links in which a series of parealEy submerged circtiar surfaces are rotated; (39) Sand Fillers: (a) Intorrrinort: Biological. Fidradon of 9n1uenl following septic Larks, lagoons, or some other treatment process in wttfch fur -.her biodecorrposision Is expected to produce dashed effluents; Hydraulic loading rates on these filters 216 cornpunod in %41ac and have a resifting lore gprrJsl (19ss than ofw); b) RedicUaing biological - ne same lypa of sand 6flar as defined in Subpitagraph pq (a) or this Rule with c'to added capability to recycle ofhueni back Cycug': lha 'and Mitt; Sand or )dixod.i.sodia Fillers. A polishing process by which emuent lirils ate achieved through a lu-hor reduction of suspended solids; (a) low rate -- g•avily, hydraulically loaded filler with loading rates In the one to Ctrea gpntrsl range• (b) high rate -- a prassure, hydraulically loaded filler with loading Was in t5v rive gpnrsl range; At any rate, the loading rate wiii exceed lfvee gpmsl; (41) Secondary Gari6ws. A urvt which follows the biological nand of traatrnen: plant and which has the purpose el removing sludgas assochled with die bio€ogical Treatment units- (42) Separala Sludge Reaeraton. A part of the contact stabilization process where the activated sludge is Iransterred to a tank and aerated before re:xring i; lathe conlacl basin; (43) Septic Tank.. A single -story satllirg tank In which seftled sludge is in contact with uw wastewater flowing through the tank; shall not ba applicable for septic lank systems serving single Iarrily razidences having capacity of 2,000 gallons or less which discharge to ] rit6rication Geld; (44) Sludge Digestion. The process by which organc or volatile mailer and sludge Is gasified, liquefied, mineralized or convened into more stable organic mar,ef through Cie activity of living organisms, which includes aefaled holding tanks; (45) Sludge Drying Sods. An area conyrising natural or artificial layers of porous materials upon which digested sewage sludge is dried by drainage and evapaaGon; (46) S-udge Elutriation. A guess of sludge corrStioning in which certain conatilusenis are removed by successive washings wig fresh wale✓ or pianl efftvartt: (47) Sludge Gas Utilization. The process of using sewage gas for the puupose of haatng buildings, driving engines, olc-; (s9) Sludge Holding Tarok (Aerated and Nonaeraled). A lank utilized I" w+nafl wastewater lrealmaril plants not retaining a dgeslw in which stvdge may be kept fresh, and supwnalanl tvilh:dawn prim 7 to a crying rnic" (i,s. sludge drying bads); Th's may be dons by adding a srt>all ampUnt of air simply to kaap Cna sludge ItesN, bvi not necessarily an'arrrvuni tnet woad be required 10 achieve stabilization of orgaric mailer. A nonaeralod lark would simply bo used to decant sludge prior to da.t•ataring and would ml allow long periods (several days of delertEan) w!lhovt rastttir,3 ado- problems; (49) Studga Incinerators. A rrnace designed to bum sludge and to rem,7eu all moisture and c"bustibfe ma{orials and reduce die sludge to a sterile ash; (50) Sludge SLabiftation (Cnemcal cc Thermal). A process to make treated sivdgo less odorous and pu>oscibfo, and to reduce thus pathogenic orgariun content; This may be alone by pH adjustmuni, chorine dosing, or by heal trealmW: (51) Sludge Trickenw. A 1yp= v! sodimantafon tank In which the sludge is pwriiied to semi and Thicken prong`s 29ifa40n and gravity; (52) Sla Uiizalion Lagoon. A type of oxidation lagoon in which biological oxidation of orgaric rnCler is ohocted by na Lean transfer of oxygen to Iha water hem air (not a polishing pond); (63) Star .9y Pourer Supply, On silo a packable efoclfical gonwaling agsiprrrsl; (5'4) Slade Screens. A slaliortary scroan dosignod to fomove solids• including not•biadayradable partit:42to (Aoalavo Solids, suspended solids and BOD fofntcoon) from municipal and induseial v+aster ate✓ voalmenl systems; (55) T9rtary Tfoatm"t. A sugo o! Voaimanl fofltrAing secondary which is peimatlly for the purpose of 011twnt porishirsg; A seftiirg lagoon or sand or coat filter righl boa onp;oy6d for tRis purpose; (SG1 Thermal Pofkrzt CON10: Dmco, A device providing lot the vanslor cr :oral hom a fvrd itowin^y in Itbos la anpoler had w!side tho Ivbos, or vice versa' ay olhwr —a-As of i0guiating tigtid (57) Thermal Studgo Cane Eons:, A cordtioning process by which heal is a{:.tic for a pro:racled period 01 lima to irslrxovo the dovra lorabiF:ty of sludge by the sr=ubibzing and hyd'au:i zirsg of lha .,ijor and mtxe Hgh'y hydrated sludge particles; (58) Toxic Materials. Thosn waslos or combinations of wastes. Including diseisa-causing agents which altar dischaigo and upon axposuro, dngostion, inhalaGp^ (- assinilatian into any argarism- oilhoe 6+recly from Ca laiwirorenant or indrt:Gy by ingestion [hrou.3h food chains, xilf cause doalh, disBasa, behavioral abnormal..ias, camp✓, gone;ic mutations, phys:Wogical malfunctions (including maTrursc-lions in rs-pradur_5an) or physical dafonnaaMs, in such organisms or ihafr alispting: Toxic materials incktda, by way of illustrator. ;:s npl €iw;latton; lead, cadmium, chromium, morwry• vanadium, arsenic, zinc, "ttuo-rare-cliofobameno (ONCE), polyc-onrina:ed Grp!tonyls (pCDs) an} uch!o cdphcnyl t-c r,cw ethane (DOT): and any onset m2166als L`a! havo of may hereaftpt ba delermn-d to have logic properties; (59) -'t CM-.g Fit Rv A. L+c•o-;'C:' Irea'J is i aril cone,stng of n inateriat suc^ as broken slono or to[;, over wNcii v+'aslu,vafor is dsvitAwled; ), tsgh :z:o Eric Aling N;If is or? s.t}d: opoatad 2; dc"+-eon . „ 30 mg.'f par a_re A lour rasa biC%hG ,, hha: is a•w wNch is dosignGd in 0;7Qe o at ern 10 lour m) d pot aC16; F�:: t•r (Fas;,ed T.,j A p.u; Row tj;:e of cp,ralion In vlich a 15;ewa!or B xs down llr, sty su>;cessive layers of :aeo*p of r:::a!a material: Gyr'�c ma:r�^ a' r r.,;•; pr' cc::y-,.,all, bT fl+., Li,'c* tat 6r7i ces-ul in oectt succrst;-.' iayor. Tri, maL7od may p-atuco Y-Grander}' 4,:,h;y e!h4tpnj. rr nuay be cdai,,._ tv 1:cr ric.:.,a, r,e:.rr;•: t'Va; 4rru .rr ... _,,. - r.a„ r+r, ss,rs s^, Volcc:• vrlroch are sr _ _..-:a tort+o.o cater:. xa:a: rho:,, r�:.., u5§�:.1,-� c_ (,.:ctcasu._ .'r-.:o rugcr la 05,,.... c, .. •s,4" ,'Gait: ..