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a | I VC Elizabeth A. Denly
o 2010-Present: Compendium of Analytical Methods Q&A: MassDEP has generated a
compendium of specific quality control and reporting requirements for many of the commonly-
used SW-846 methods in order to promote inter-laboratory consistency and to also be able to
provide the regulators with a greater degree of certainty regarding the quality of the data. All
questions received by MassDEP in reference to this compendium of analytical methods are
forwarded to Ms. Denly. Ms. Denly is responsible for generating a response to each question
on behalf of MassDEP and for tracking all questions and answers for subsequent posting on
the MassDEP web site.
o 2010-2014: Audit Assistance: Ms. Denly has provided assistance to MassDEP to determine
whether the regulated community was correctly implementing analytical methodologies at
MassDEFP sites. Her responsibilities included a review of historical laboratory data package
submittals to MassDEP and development of screening-level and detailed checklists for
MassDEP Bureau of Waste Site Cleanup (BWSC) auditors to use when evaluating data
generated under the Compendium of Analytical Methods (CAM).
o 2008-Present: CAM Revisions: In conjunction with MassDEP, Ms. Denly revised and
updated the CAM documents that instruct laboratories on how to perform common analytical
methods under the Massachusetts Contingency Plan (MCP). The CAM documents detail
quality control procedures, acceptance criteria, corrective actions, and reporting
requirements that laboratories must follow when performing analyses for most programs in
Massachusetts. Ms. Denly is actively involved with the technical review and update of
existing CAM documents, which includes analytical methods for VOCs, SVOCs, pesticides,
PCBs, herbicides, explosives, extractable petroleum hydrocarbons (EPH), VPH, metals,
cyanide, and hexavalent chromium. Ms. Denly’s responsibilities also included the creation of
new CAM documents for perchlorate, MassDEP’s air-phase petroleum hydrocarbons (APH)
method and USEPA method TO-15 analyses. When the revisions were finalized, Ms. Denly
provided training for laboratories and licensed site professionals (LSPs) on the new and
revised CAM documents. Ms. Denly recently created a CAM document for the VPH by
GC/MS method described above.
o 2006-2007: Data Usability Work Group: Ms. Denly served as a member of the Data
Usability Work Group led by MassDEP and assisted in the development of a policy for
Representativeness Evaluations and Data Usability Assessments (REDUA). Ms. Denly has
extensive experience in generating data usability assessments in conformance with this
policy as well as with a wide variety of data sets and scenarios.
o 2003-2004: Revisions & Updates to EPH/VPH Methods: Ms. Denly served as a member
of the EPH/VPH Revisions Work Group led by MassDEP. The Work Group was responsible
for updating the 1998 EPH/VPH methods based on laboratory’s experiences with the
methods since it was released. As a result of serving on this Work Group, Ms. Denly was
subsequently contracted by MassDEP to provide final documents for the revised EPH/VPH
methods.
o 2001-2004: Data Quality Enhancement Work Group: Ms. Denly served as a member of
the Data Quality Enhancement Work Group led by MassDEP and assisted in the
development of a policy for achieving consistency of data reported under the MCP. Ms.
Denly was designated as the Organic Subcommittee Chairperson on this Work Group,
