For the purpose of classification of wastewater treatment plants, the plants shall be awarded points based on the criteria in this section. The combined total of subdivisions (1) and (2) may not exceed 20 points. The points and criteria are as follows:
(1) One point per 10,000 population equivalent or part thereof served on a peak day;(2) One point per 1,000,000 gallons per day or part thereof for the designed average daily flow or peak month flow, whichever is larger;(3) Six points if the wastewater is or may be discharged into surface waters classified for either domestic water supplies or cold water permanent fish life propagation, or both, in accordance with the rules in article 74:51;(4) Five points if the wastewater is or may be discharged into surface waters classified for cold water marginal or warm water permanent fish life propagation in accordance with the rules in article 74:51;(5) Four points if the wastewater is or may be discharged into surface waters classified for warm water semi-permanent fish life propagation in accordance with the rules in article 74:51;(6) Three points if the wastewater is or may be discharged into surface waters classified for warm water marginal fish life propagation in accordance with the rules in article 74:51;(7) Two points if the wastewater is or may be discharged into surface waters classified for fish and wildlife propagation, recreation, and stock watering in accordance with the rules in article 74:51;(8) Two points if the wastewater effluent is discharged to the land for final disposal or held in ponds for evaporation;(9) Four points if the wastewater effluent is disposed of below the surface of the ground;(10) Two points if the raw waste flow has recurring deviations or excessive variations of 100 to 200 percent in average daily flow;(11) Three points if the raw waste flow has recurring deviations or excessive variations of more than 200 percent in average daily flow;(12) Two points if the raw waste flow contains toxic wastes which cause a problem at the plant;(13) Two points if the raw waste flow has recurring deviations or excessive variations of 100 to 200 percent in average daily five-day biochemical oxygen demand (BOD) concentration;(14) Three points if the raw waste flow has recurring deviations or excessive deviations of more than 200 percent in average daily five-day BOD concentrations;(15) One point if the peak day raw waste suspended solids (SS) concentration is greater than two times the SS concentration on an average day for the year;(16) Three points if either wastewater screening or comminution, or both, is provided;(17) Three points if grit removal is provided;(18) Three points if pumping of the main flow at the plant is provided;(19) Five points if one or more primary clarifiers are provided as primary treatment;(20) Five points if combined primary sedimentation/digestion is provided as primary treatment;(21) Four points if chemical addition, except chlorination and enzymes, is provided as primary treatment;(22) Ten points if trickling filtration with one or more secondary clarifiers is provided as secondary treatment;(23) Fifteen points if activated sludge with one or more secondary clarifiers, including extended aeration and oxidation ditches, is provided as secondary treatment;(24) Five points if stabilization ponds without aeration are provided as secondary treatment;(25) Eight points if an aerated lagoon is provided as secondary treatment;(26) Two points if a polishing pond is provided as advanced waste treatment;(27) Fifteen points if chemical/physical treatment is provided as advanced waste treatment without secondary treatment;(28) Ten points if chemical/physical treatment is provided as advanced waste treatment following secondary treatment;(29) Twelve points if biological or chemical/biological treatment is provided as advanced waste treatment;(30) Ten points if ion exchange is provided as advanced waste treatment;(31) Fifteen points if reverse osmosis or electrodialysis is provided as advanced waste treatment;(32) Four points if chemical recovery or carbon regeneration is provided;(33) Five points if thickening of sludge is provided;(34) Ten points if anaerobic digestion of sludge is provided;(35) Twelve points if aerobic digestion of sludge is provided;(36) Two points if evaporative sludge drying is provided;(37) Eight points if mechanical dewatering of sludge is provided;(38) Twelve points if solids reduction by incineration or wet oxidation is provided;(39) Five points if disinfection of the wastewater is provided;(40) Five points if on-site generation of the disinfectant is provided;(41) Two points if alternative power generation is provided;(42) Two points if raw waste flow equalization is provided;(43) Three points if mound system primary treatment is provided;(44) Ten points if an aerated lagoon with anaerobic cells is provided as secondary treatment;(45) Twelve points if a sequential batch reactor method is provided as secondary treatment;(46) Ten points if irrigation with the process effluent is provided;(47) Ten points if infiltration/percolation basins are provided as advanced waste treatment;(48) Eight points if artificial wetlands are provided as advanced waste treatment;(49) Eight points if land application of sludge is provided;(50) Five points if methane gas recovery or reuse, or both, is provided;(51) Three points if anaerobic lagoons for sludge are provided;(52) Five points if groundwater monitoring and parameter analysis are provided;(53) Two points for each industry that is pretreating its raw waste;(54) Ten points if rotating biological contractors with one or more secondary clarifiers are provided as secondary treatment;(55) Five points if dechlorination of the wastewater is provided;(56) For the purpose of determining the laboratory control performed by plant personnel, the plants shall be awarded points if the tests of the wastewater are conducted in accordance with either Methods for Chemical Analysis of Water and Wastes, 1983 or Standard Methods for the Examination of Water and Wastewater, or both, based on the following criteria: (a) Three points for the determination of total and fecal coliforms by a multiple tube or membrane filter method;(b) Two points for the determination of total and fecal coliforms by a presence/absence method;(c) Three points for analysis of BOD;(d) One point for biological determination in the plant or stream;(e) One point for analysis of any pH by an electronic probe method or chlorine residual, pH, nitrogen, phosphorus, ammonia nitrogen by colorimetric method, or settleable solids by a gravimetric/volumetric method;(f) Two points for analysis of any total dissolved solids, suspended solids, or volatile suspended solids by a gravimetric method;(g) One point for analysis of dissolved oxygen by a meter and probe;(h) Two points for analysis of chemical oxygen demand by a digestion/colorimetric method or grease; and(i) Five points for determination of radioactivity.S.D. Admin. R. 74:21:02:60
6 SDR 49, effective 11/19/1979; 13 SDR 129, 13 SDR 141, effective 7/1/1987; 15 SDR 84, effective 12/4/1988; 27 SDR 53, effective 12/4/2000.General Authority: SDCL 34A-3-24.
Law Implemented: SDCL 34A-3-2.
EPA Methods, Methods for Chemical Analysis of Water and Wastes, 1983, published by the U.S. Environmental Protection Agency. Publication number EPA-600/ 4-79-020. Copies are available from the Superintendent of Documents, U.S. Government Printing Office, Washington, D.C. 20402. Standard Methods for the Examination of Water and Wastewater, 19th edition, 1995, Library of Congress card number 95-79480, ISBN number 0-87553-223 -3, prepared and published jointly by the American Public Health Association, the American Water Works Association, and the Water Environment Federation. The publication office is American Public Health Association, 1015 Fifteenth Street N.W., Washington, D.C. 20005. Copies may be obtained from American Public Health Association, 1015 Fifteenth Street N.W., Washington, D.C. 20005. The cost is $200.