[Code of Federal Regulations]
[Title 40, Volume 17, Parts 199 to 259]
[Revised as of July 1, 2000]
From the U.S. Government Printing Office via GPO Access
[CITE: 40CFR257.30]
[Page 383-384]
TITLE 40--PROTECTION OF ENVIRONMENT
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
Secs. 257.7 through 257.12; and
(2) Any demonstration, certification, finding, monitoring, testing,
or analytical data required in Secs. 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).
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
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.
[[Page 384]]
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 60Cobalt and 137Cesium,
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.