Wisconsin Administrative Code
Department of Natural Resources
NR 600-699 - Environmental Protection - Hazardous Waste Management
Chapter NR 666 - Standards For Managing Specific Hazardous Wastes And Specific Types Of Hazardous Waste Management Facilities
Subchapter H - Hazardous Waste Burned in Boilers and Industrial Furnaces
Section NR 666.108 - Small quantity on-site burner exemption
Current through August 26, 2024
(1) EXEMPT QUANTITIES. Owners and operators of facilities that burn hazardous waste in a non-site boiler or industrial furnace are exempt from this subchapter if all of the following conditions are met:
Terrain-adjusted effective stack height of device (meters) |
Allowable hazardous waste burning rate (gallons/ month) |
Terrain-adjusted effective stack height of device (meters) |
Allowable hazardous waste burning rate (gallons/month) |
0 to 3.9 |
0 |
40.0 to 44.9 |
210 |
4.0 to 5.9 |
13 |
45.0 to 49.9 |
260 |
6.0 to 7.9 |
18 |
50.0 to 54.9 |
330 |
8.0 to 9.9 |
27 |
55.0 to 59.9 |
400 |
10.0 to 11.9 |
40 |
60.0 to 64.9 |
490 |
12.0 to 13.9 |
48 |
65.0 to 69.9 |
610 |
14.0 to 15.9 |
59 |
70.0 to 74.9 |
680 |
16.0 to 17.9 |
69 |
75.0 to 79.9 |
760 |
18.0 to 19.9 |
76 |
80.0 to 84.9 |
850 |
20.0 to 21.9 |
84 |
85.0 to 89.9 |
960 |
22.0 to 23.9 |
93 |
90.0 to 94.9 |
1,100 |
24.0 to 25.9 |
100 |
95.0 to 99.9 |
1,200 |
26.0 to 27.9 |
110 |
100.0 to 104.9 |
1,300 |
28.0 to 29.9 |
130 |
105.0 to 109.9 |
1,500 |
30.0 to 34.9 |
140 |
110.0 to 114.9 |
1,700 |
35.0 to 39.9 |
170 |
115.0 or greater |
1,900 |
(2) MIXING WITH NONHAZARDOUS FUELS . If hazardous waste fuel is mixed with a nonhazardous fuel, the quantity of hazardous waste before such mixing is used to comply with sub. (1).
(3) MULTIPLE STACKS . If an owner or operator burns hazardous waste in more than one on-site boiler or industrial furnace exempt under this section, the quantity limits provided by sub. (1) (a) are implemented according to the following equation:
where:
n means the number of stacks.
Actual Quantity Burned means the waste quantity burned per month in device "i".
Allowable Quantity Burned means the maximum allowable exempt quantity for stack "i" from the table in sub. (1) (a).
Note: Hazardous wastes that are subject to the special requirements for small quantity generators under ss. NR 662.013 and 662.016 may be burned in an off-site device under the exemption provided by this section, but shall be included in the quantity determination for the exemption.
(4) NOTIFICATION REQUIREMENTS . The owner or operator of facilities qualifying for the small quantity burner exemption under this section shall provide a one-time signed, written notice to the department indicating all of the following:
(5) RECORDKEEPING REQUIREMENTS . The owner or operator shall maintain at the facility for at least 3 years sufficient records documenting compliance with the hazardous waste quantity, firing rate and heating value limits of this section. At a minimum, these records shall indicate the quantity of hazardous waste and other fuel burned in each unit per calendar month, and the heating value of the hazardous waste.