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The
14th Annual Waste Testing and Quality Assurance Symposium, sponsored
by the USEPA's Office of Solid Waste and Emergency Response and the
American Chemical Society, was held July 13-16, 1998. Several short
courses were scheduled during the symposium, including:
"Analytical Strategy for the RCRA Program," "Clean
Chemistry for Trace Elemental Analysis," "Quality Systems,
PBMS and NELAC: Putting It All Together," and "Intro to
Practical Ethics for Environmental Labs." Most of these short
courses were well-attended, and several had more participants than
planned. However, it was announced that only eight (8) people had
signed up for the Lab Ethics workshop, and the workshop was
cancelled!
This failure to draw more people
was even more glaring when Joseph F. Solsky, a chemist with the US
Army Corps of Engineers in Omaha, Nebraska, presented a paper in the
Tuesday morning Organics I Session entitled "Questionable
Practices in the Laboratory." He stated most people in the
industry know about practices that "clearly involve the
deliberate direct manipulation and/or alteration of data, often to
achieve or meet method QC criteria." These include "dry-labbing,"
"peak-shaving, "peak-enhancing," and
"time-traveling." Dr. Solsky focused on questionable
practices such as:
- Lab Standard Operating Procedures
or Quality Control Plans that contain incorrect (false, misleading)
statements
- Initial 5-point calibration curves
constructed by "picking and choosing" the best from 8 or
more different responses
- Averaging the % Difference across
all target analytes. even when several exceed the Continuing
Calibration Verification criteria
- Narrow acceptance ranges for
Laboratory Control Samples and wide ranges for Matrix Spike samples
are reported, but the actual laboratory control charts show
significantly different ranges
- Detection limit studies analyzed
eight or more samples, then discarded points to achieve a lower MDL
with the best seven.
The practices noted in Dr. Solsky's
presentation, and others contributed by attendees (picking the
cleanest of multiple method blanks to report, for example) combined
with the cancellation of the Lab Ethics short course, were some of
the hottest "hallway" topics during the symposium. Why are
these questionable practices, as well as the obviously fraudulent
activities, performed at labs? What can be done about it? The
following comments may stimulate your response:
Dr. Solsky said there may be
several reasons why labs use questionable practices:
- An entire generation of analysts is
familiar with "prescriptive" methods and contract
specifications, but not necessarily the science behind them
- The labs face market pressures such
as commodity pricing, industry over-capacity, and difficult client
expectations
- Labs using "low-ball"
prices to "get a foot in the door" don't cover real
analytical and reporting costs, and may cut corners on quality
Were there only eight signups for
the short course because everyone else already knew of the problems,
and addressed them? Or did they not want to know? Or were they
afraid if they signed up for the course, they would be perceived as
"having a problem" and be shunned? Did everyone read and
heed the Inspector General's report "Laboratory Data Quality at
Federal Facility Superfund Sites?" An excerpt follows: "Federal facilities have
experienced serious problems with the quality of laboratory analyses
used to make cleanup decisions. There is evidence these problems are
widespread." To illustrate:
Extensive laboratory fraud was
found at one laboratory, which was used by 28 DOD installations in
three EPA regions, resulting in about $5 million dollars of lost
data, resampling costs, and associated expenses. EPA suspended
another laboratory for improper analyses. This laboratory did work
at five DOD sites in two EPA regions. One of these sites was Hunters
Point Naval Shipyard, where $2.5 million of data from this
laboratory and another laboratory was deemed unusable and the
cleanup was delayed 2 years. DOE had problems with laboratory
analyses at its Hanford and Fernald Superfund sites. Fraudulent
laboratory analyses were alleged at Hanford, one of the nation's
largest environmental cleanup sites. Further, approximately $240,000
of laboratory analyses were rejected at its Fernald site. Additional
laboratory analyses, costing about $3.2 million could not be used
for their intended purpose at Rocky Mountain Arsenal, Luke Air Force
Base, Travis Air Force Base, and Sacramento Army Depot because of
laboratory quality issues. Moreover, the cleanup of one operable
unit at Travis Air Force Base was delayed more than 2 years.
What horror stories, questionable
practices, even fraudulent activities can you describe? What
happened, what was the impact on the people and the data quality?
Most important, what can be done to detect, correct, and prevent
abuses? Should there be mandatory lab employee ethics training as
part of EPA analytical contracts? Should there be industry
workgroups who address these problems? Should laboratories who
self-report such abuses and practices be penalized as harshly as
those caught covering them up? How should an employee be treated
from such a lab, one who didn't know about these practices, or
believed they were acceptable?
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