§270.1(c)(2)(v)

(2) Specific exclusions. The following persons are among those who are not required to obtain a RCRA permit:
(I) Generators who accumulate hazardous waste on-site for less than the time periods provided in 40 CFR §262.34
(ii) Farmers who dispose of hazardous waste pesticides from their own use as provided in 40 CFR §262.70 of this chapter.
(iii) Persons who own or operate facilities solely for the treatment, storage or disposal of hazardous waste excluded from regulations under this part by 40 CFR §261.4 or 261.5 (small generator exemption).
(iv) Owners or operators of totally enclosed treatment facilities as defined in 40 CFR §260.10.
(v) Owners and operators of elementary neutralization units or wastewater treatment units as defined in 40 CFR §260.10.