At the Intersection of Geology,
Chemistry and Mathematics
William W. Gould, Ph.D., P.G.
www.WWGeosciences.com
412-389-2859
Risk Assessment, Statistics and Data Management
Risk Assessment
The statutes passed in many states which allow
risk-based corrective action standards for contaminated sites have resulted in
a flurry of remediation at sites where previously problems had festered. Recently regulators have increased their
level of scrutiny over risk-based cleanup standards and demonstrations of
remediation. For this reason great care
is needed for exposure assessments and pathway evaluations.
Project Experience
·
Developed spreadsheet models for estimating
volatile organic emissions from contaminated soils.
·
Developed spreadsheet for computing vapor
intrusion into buildings using the Johnson & Ettiger
model.
·
Performed pathway evaluations and exposure
assessments for UST sites
·
Performed pathway evaluations and exposure
assessments for industrial facilities.
·
Combined groundwater modeling, vapor intrusion
modeling and exposure assessment techniques to demonstrate attainment of remediation
standards
· Performed numerical
modeling of contaminant transport in soils to evaluate the threat of future
groundwater contamination from present soil contamination.
·
Revision of public health risk assessment, and
management of risk assessments through regulatory review and comment process.
·
Performed numerical modeling of groundwater flow
and contaminant transport to determine possible extent of contamination,
evaluate remedial alternatives, or substantiate “no further action”
determinations.
Computational Assistance and Statistics.
New
regulatory requirements for nonparametric and other unfamiliar statistical
tests can give a consultant headaches. WWGeosciences
was the in-house statistician for a medium sized consulting firm, and is able
to solve your computational needs. We are experts at taking unfamiliar
statistical tests, solving them, and placing the solution into an easily usable
and client-updatable spreadsheet or database.
If you are managing a site where inter-well or inter-well comparisons
need to be made. WWGeosciences can set up the
appropriate test in a user-friendly database. WWGeosciences sets it
up for one monitoring period. In the subsequent period, you enter the new data,
and the new period's tests are done automatically.
Project
Experience
- Developed spreadsheet models for
estimating volatile organic emissions from contaminated soils.
- Design of relational database
applications site analytical data. Integration of site database with
geographic information systems package.
- Developed in-house software for
aquifer test analyses.
- Statistically evaluated
soil-sampling results using parametric and nonparametric methods including
Kolmogorov-Smirnov tests.
- Devised appropriate statistical
tests for discriminating between groundwater and leachate
source areas.
- Analyzed water temperature and
stream flow data, diurnal and weather cycle variations, and fish
temperature tolerance criteria to determine the effects of a thermal
discharge in the
Data Validation
WWGeosciences is
experienced with SW-846 and Contract Laboratory Program protocols. We can
evaluate the usability of laboratory data, and also explain the meaning and the
degree of uncertainty in any analysis. We can validate organic and inorganic
analyses.
Project Experience
- Validated laboratory data according
to Contract Laboratory Program protocol.
- Performed rigorous data validation
for SW-846 packages without CLP forms,
Call
William W. Gould at 412-389-2859
Or
email at
To
arrange a Consulting Agreement
Geochemical & Hydrogeological Consulting
Environmental Forensics and
Litigation Assistance