[Code of Federal Regulations] [Title 40, Volume 24] [Revised as of July 1, 2006] From the U.S. Government Printing Office via GPO Access [CITE: 40CFR257.30] [Page 394-395] TITLE 40--PROTECTION OF ENVIRONMENT CHAPTER I--ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) PART 257_CRITERIA FOR CLASSIFICATION OF SOLID WASTE DISPOSAL FACILITIES AND PRACTICES--Table of Contents Subpart B_Disposal Standards for the Receipt of Conditionally Exempt Small Quantity Generator (CESQG) Wastes at Non-Municipal Non-Hazardous Waste Disposal Units Sec. 257.30 Recordkeeping requirements. (a) The owner/operator of a non-municipal non-hazardous waste disposal unit must record and retain near the facility in an operating record or in an alternative location approved by the Director of an approved State the following information as it becomes available: (1) Any location restriction demonstration required under Sec. Sec. 257.7 through 257.12; and (2) Any demonstration, certification, finding, monitoring, testing, or analytical data required in Sec. Sec. 257.21 through 257.28. (b) The owner/operator must notify the State Director when the documents from paragraph (a) of this section have been placed or added to the operating record, and all information contained in the operating record must be furnished upon request to the State Director or be made available at all reasonable times for inspection by the State Director. (c) The Director of an approved State can set alternative schedules for recordkeeping and notification requirements as specified in paragraphs (a) and (b) of this section, except for the notification requirements in Sec. 257.25(g)(1)(iii). (d) The Director of an approved state program may receive electronic documents only if the state program includes the requirements of 40 CFR Part 3--(Electronic reporting). [44 FR 53460, Sept. 13, 1979, as amended at 70 FR 59888, Oct. 13, 2005] Appendix I to Part 257--Maximum Contaminant Levels (MCLs) Maximum Contaminant Levels (MCLs) Promulgated Under the Safe Drinking Water Act ------------------------------------------------------------------------ MCL (mg/ Chemical CAS No. l) ------------------------------------------------------------------------ Arsenic........................................... 7440-38-2 0.05 Barium............................................ 7440-39-3 1.0 Benzene........................................... 71-343-2 0.005 Cadmium........................................... 7440-43-9 0.01 Carbon tetrachloride.............................. 56-23-5 0.005 Chromium (hexavalent)............................. 7440-47-3 0.05 2,4-Dichlorophenoxy acetic acid................... 94-75-7 0.1 [[Page 395]] 1,4-Dichlorobenzene............................... 106-46-7 0.075 1,2-Dichloroethane................................ 107-06-2 0.005 1,1-Dichloroethylene.............................. 75-35-4 0.007 Endrin............................................ 75-20-8 0.0002 Fluoride.......................................... 7 4.0 Lindane........................................... 58-89-9 0.004 Lead.............................................. 7439-92-1 0.05 Mercury........................................... 7439-97-6 0.002 Methoxychlor...................................... 72-43-5 0.1 Nitrate........................................... .......... 10.0 Selenium.......................................... 7782-49-2 0.01 Silver............................................ 7440-22-4 0.05 Toxaphene......................................... 8001-35-2 0.005 1,1,1-Trichloroethane............................. 71-55-6 0.2 Trichloroethylene................................. 79-01-6 0.005 2,4,5-Trichlorophenoxy acetic acid................ 93-76-5 0.01 Vinyl chloride.................................... 75-01-4 0.002 ------------------------------------------------------------------------ [56 FR 51016, Oct. 9, 1991] Appendix II to Part 257 A. Processes To Significantly Reduce Pathogens Aerobic digestion: The process is conducted by agitating sludge with air or oxygen to maintain aerobic conditions at residence times ranging from 60 days at 15 [deg]C to 40 days at 20 [deg]C, with a volatile solids reduction of at least 38 percent. Air Drying: Liquid sludge is allowed to drain and/or dry on under- drained sand beds, or paved or unpaved basins in which the sludge is at a depth of nine inches. A minimum of three months is needed, two months of which temperatures average on a daily basis above 0 [deg]C. Anaerobic digestion: The process is conducted in the absence of air at residence times ranging from 60 days at 20 [deg]C to 15 days at 35 to 55 [deg]C, with a volatile solids reduction of at least 38 percent. Composting: Using the within-vessel, static aerated pile or windrow composting methods, the solid waste is maintained at minimum operating conditions of 40 [deg]C for 5 days. For four hours during this period the temperature exceeds 55 [deg]C. Lime Stabilization: Sufficient lime is added to produce a pH of 12 after 2 hours of contact. Other methods: Other methods or operating conditions may be acceptable if pathogens and vector attraction of the waste (volatile solids) are reduced to an extent equivalent to the reduction achieved by any of the above methods. B. Processes To Further Reduce Pathogens Composting: Using the within-vessel composting method, the solid waste is maintained at operating conditions of 55 [deg]C or greater for three days. Using the static aerated pile composting method, the solid waste is maintained at operating conditions of 55 [deg]C or greater for three days. Using the windrow composting method, the solid waste attains a temperature of 55 [deg]C or greater for at least 15 days during the composting period. Also, during the high temperature period, there will be a minimum of five turnings of the windrow. Heat drying: Dewatered sludge cake is dried by direct or indirect contact with hot gases, and moisture content is reduced to 10 percent or lower. Sludge particles reach temperatures well in excess of 80 [deg]C, or the wet bulb temperature of the gas stream in contact with the sludge at the point where it leaves the dryer is in excess of 80 [deg]C. Heat treatment: Liquid sludge is heated to temperatures of 180 [deg]C for 30 minutes. Thermophilic Aerobic Digestion: Liquid sludge is agitated with air or oxygen to maintain aerobic conditions at residence times of 10 days at 55-60 [deg]C, with a volatile solids reduction of at least 38 percent. Other methods: Other methods or operating conditions may be acceptable if pathogens and vector attraction of the waste (volatile solids) are reduced to an extent equivalent to the reduction achieved by any of the above methods. Any of the processes listed below, if added to the processes described in Section A above, further reduce pathogens. Because the processes listed below, on their own, do not reduce the attraction of disease vectors, they are only add-on in nature. Beta ray irradiation: Sludge is irradiated with beta rays from an accelerator at dosages of at least 1.0 megarad at room temperature (ca. 20 [deg]C). Gamma ray irradiation: Sludge is irradiated with gamma rays from certain isotopes, such as \60\ Cobalt and \137\ Cesium, at dosages of at least 1.0 megarad at room temperature (ca. 20 [deg]C). Pasteurization: Sludge is maintained for at least 30 minutes at a minimum temperature of 70 [deg]C. Other methods: Other methods or operating conditions may be acceptable if pathogens are reduced to an extent equivalent to the reduction achieved by any of the above add-on methods.