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.
If you are managing a site where intra-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.
- 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.