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Transfer to Disposal-Underground Injection Class I Wells


Underground injection is the subsurface emplacement of fluids through
wells. TRI chemicals associated with manufacturing, the petroleum
industry, mining, commercial and service industries, and Federal and
municipal government related activities may be injected into class I, II,
III, IV, or V wells, if they do not endanger underground sources of
drinking water (USDW), public health or the environment. Class I wells are
industrial, municipal, and manufacturing related wells which inject fluids
into deep, confined and isolated formations below potable water supplies.
Class II wells are oil and gas related wells which re-inject produced
fluids for disposal, enhanced recovery of oil, or hydrocarbon storage.
Class III wells are those wells associated with the solution mining of
minerals. Class IV wells are those wells which may inject hazardous or
radioactive fluids directly or indirectly into USDW, only if injection is
part of an authorized CERCLA/RCRA clean up operation. Class V wells, which
include all types of injection wells which do not fall under I-IV, may
inject only if they do not endanger USDW, public health or the
environment. Class V wells are, generally, shallow drainage wells, such as
floor drains connected to dry wells or drain fields. Data from Section
6.2, Code M81, on the TRI Form R. Prior to reporting year 2003, these
amounts were included in Section 6.2, Code M71 (transfers to underground
injection).


Disposal or Other Release Reports Metadata


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