MIL-HDBK-1005/9A
To ensure compliance with their NPDES permits, publicly owned
treatment works enforce pretreatment standards which industrial
users must follow before discharging into sewers.
In addition to effluent limitations, the permit can
require monitoring and reporting requirements. Monitoring
requirements include descriptions of how the sampling of the
effluent should be conducted, how frequently the samples should
be taken, and the type of monitoring required. The results of
monitoring (including any noncompliance) are recorded on a
Discharge Monitoring Report and are reported regularly to the
EPA and State authorities. Water quality standards are also
enforced through the NPDES. If any standard is not sufficient
to protect the waters, then more stringent limitations are
included in the permit.
NPDES permits are administered by either the U.S. EPA
or a state that has been delegated by the EPA to be a permitting
authority. Permits are valid for 5 years and only under certain
circumstances may be modified, revoked, reissued, transferred,
or terminated. Failure to disclose facts when applying for a
permit, failure to comply, or the closing of a facility will
justify the termination of a permit. Modifications can be made
to the permit when there are changes to the facility, when new
information is available, or when regulations are changed.
Permits can be issued only after opportunity has been given for
a public hearing.
1.5.4
Small Discharge Containment. Title 33, Section
154.530 of the Code of Federal Regulations (CFR) requires small
discharge containment for facilities that transfer oil or
hazardous waste. The facility must have fixed catchments,
curbing, berm, or other fixed means to contain discharges from
hose connections and loading arm areas. The containment must
have the capacity of at least: (1) two barrels if it serves one
or more hoses of 6-inch diameter pipe or smaller; (2) three
barrels if it serves one or more hoses with diameter more than 6
inches but less than 12 inches; (3) four barrels if it serves
one or more hoses of 12-inch diameter or larger.
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