All I Want for Christmas...
To say that this year has been challenging is probably the most overused statement of the year. Given we are entering the holiday season,...
Preliminary DTSC Study on Attenuation Factors
Prepared by Brianne Archer, P.E. and Jeffrey Dagdigian, PhD Vapor intrusion occurs when chemical vapors migrate from contaminated...
Indoor Vapor Intrusion from Underlying Groundwater Contamination
Brianne Archer, Supervising Engineer, PE, CPP Richard Vogl, Principal Hydrogeologist, CHG, CEG, PG TECH MEMO: How do you know if...
Mitigation Measures for Vapor Intrusion
What options are available to mitigate the risks posed by potential vapor intrusion?
TCE and PCE Indoor Air Regulatory Levels - A Deeper Dive
Let’s talk about the indoor air screening levels for trichloroethene (TCE) and perchloroethene (PCE). This discussion might be useful for...
COVID-19 Postpones Deadline for Submission of Comments Supplemental Guidance for Vapor Intrusion
Supplemental Guidance for Screening and Evaluating Vapor Intrusion - Draft for Public Comments (Draft Supplemental VIG)
Cleaning and Reusing Face Masks and Other Protective Face Coverings
Cleaning and Reusing Face Masks and Other Protective Face Coverings
Phase I Environmental Site Assessments During the COVID-19 Crisis
Waterstone is continuing to perform Phase I Environmental Site Assessments during the COVID-19 crisis/
Environmental Agency On-Going Services and Support During COVID-19
To assist you in your environmental planning, Waterstone has made inquiries with numerous agencies in southern California regarding how each
Waterstone Environmental's COVID-19 Client Support Policy
The health and safety of Waterstone’s clients and employees is our highest priority.
