Glossary - D
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"Definitive test" means, for Acute Toxicity Testing,
a short-term toxicity test used to measure the acute toxicity
of effluents or materials.
"Department" means the New Jersey Department of
Environmental Protection.
"Department validated methods" means analytical
methods developed and validated for analysis of specified
matrices by the Department or by Department sponsored research.
"Detection limit" (DL) or "instrument detection
limit" (IDL) means the lowest concentration above background
noise level that an instrument can detect reliably.
"Dilution factor" (DF) means, for Chemical Testing,
a multiplication factor applied to a calculated sample result
to compensate for sample dilution. The dilution factor is
determined as follows:
DF = Diluted sample volume/Original sample volume
"Dilution water" means, for Acute Toxicity Testing,
unpolluted water of desired quality to be used in preparing
the different test concentrations of the effluent and controls.
For example, dilution water is usually collected from a point
that is as close as possible to, but upstream or outside of,
the effluent's zone of impact.
"Discharge" means an intentional or unintentional
action or omission resulting in the releasing, spilling, leaking,
pumping, pouring, emitting, emptying, or dumping of a pollutant
into the waters of the State, onto land or into wells from
which the pollutant might flow or drain into such waters,
or into waters, or onto lands outside the judisdiction of
the State which pollutant enters the waters of the State,
and shall include the release of any pollutant into a municipal
treatment works.
"Drinking Water Program" means the Department's
program implementing the Safe Drinking Water Act, N.J.S.A.
58:12A-1 et seq.
"Drinking Water Sample" means a regulatory sample
analyzed to determine compliance with the Drinking Water Program.
"DSAM" means Department Sanctioned Analytical Method.
DSAMs are methods that laboratories may be certified to perform
if they qualify under the requirements of this chapter. Mandatory
methods, published or referenced in the Code of Federal Regulations,
become DSAMs on their stated effective date. New or revised
CERCLA CLP methods become DSAMs when new or revised CLP methods
are included in Invitation for Bid documents published in
the Commerce Business Daily. DSMs that are needed for analysis
of Department program regulatory samples, are designated as
DSAMs by procedures described at N.J.A.C. 7:18?2.21.
"DSM" means Department Selected Method. DSMs are
methods selected for designation as DSAMs. DSMs include methods
that the Department has determined are necessary for the analysis
of Program regulatory samples, but are not mandatory methods
published or referenced in the Code of Federal Regulations
and are not new CERCLA CLP methods published in Invitation
for Bid documents published in the Commerce Business Daily.
DSMs may include:
- Published USEPA discretionary methods;
- Methods published by professional organizations with recognized
expertise in method development such as ASTM, APHA, and
USGS; and
- Departmental validated methods.
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