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Toxicology Laboratory
Toxicity Testing Services
 Full Service Laboratory with Complementary Services
MACTEC Environmental and
Consulting’s (MACTEC E&C) toxicology
laboratory offers comprehensive
toxicity testing services using aquatic
and terrestrial organisms. The
laboratory is certified and routinely
audited by the USEPA. The services
offered by the toxicology laboratory are
used by MACTEC E&C to enhance and
augment the company’s full range of
consulting services to the benefit of our
clients.
Results and data produced by the
laboratory are used to perform
ecological and toxicological
assessments, and delineation and
evaluation of contaminated sites by
MACTEC E&C’s Human Health,
Ecological Risk Assessment and
Environmental Assessment groups.
Results from the laboratory also
complement MACTEC E&C’s Permitting
and Compliance Services and provide
critical information to assist with
litigation support and expert testimony.
The laboratory has provided toxicity
testing services in support of private
sector and government clients (e.g.,
U.S. Navy CLEAN, NOAA, USAF,
USARMY, USACE, and USEPA).
MACTEC E&C’s toxicology laboratory
has adequate facilities, equipment and
personnel to perform numerous toxicity
tests simultaneously. These facilities
are in compliance with appropriate
Good Laboratory Practice (GLP)
standards.
The following is a summary of routine
toxicity testing and guidelines followed
by the laboratory.
 Effluent toxicity testing services in
support of the National Pollutant
Discharge Elimination System
(NPDES) using EPA and/or ASTM
guidelines;- Sediment, water and wastewater,
and soil toxicity testing for
hazardous waste sites using
USACE, ASTM and EPA guidelines;
- Pure compound testing in support
of FIFRA, TSCA, OECD and FDA
regulations; and
- Specialized toxicity testing in
support of ecological risk
assessment to include soils,
sediments, and aqueous solutions.
Laboratory Qualifications
and Services
- Twenty years experience
conducting marine and freshwater,
soil and sediment toxicology
studies
- Capabilities range from static
screening tests to flow-through
chronic studies
- Biomonitoring work includes
NPDES compliance tests and
Toxicity Reduction Evaluation/
Toxicity Identification Evaluation
(TRE/TIE) studies
Sediment toxicology capabilities
including solid phase, elutriate,
and bioaccumulation testing
- Soil toxicity tests including
earthworm survival, growth,
and bioaccumulation potential
- Seed germination, growth
and root elongation tests
- Laboratory culture of
fresh water and marine
organisms
- Laboratory rooms with
independent temperature
and photoperiod controls
- Mobile laboratories fully equipped
for onsite, flow-through testing
 Filtered and unfiltered seawater
and fresh dilution waters- Proportional diluters, continuousflow
diluters, and mini-diluters
Bioconcentration and
bioaccumulation studies
- Computer-generated statistical
analyses and modeling
- Microbial analyses and
Microtox© testing
- Determination of physical and
chemical properties
Full Service Testing
- Fresh and Salt Water, Sediments
and Soils
The toxicology laboratory at MACTEC
E&C utilizes a wide variety of aquatic
and terrestrial test organisms for our
toxicity testing programs.
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