January 2020

Use of Groundwater Models in PFAS Investigations

The emerging contaminants, per- and polyfluoroalkyl substances (PFAS), have the potential for widespread adverse effects because of their physical characteristics and toxicologies at extremely low concentrations. Many states are requiring that public water supplies be tested for PFAS. If PFAS are present in the water supply, the question becomes “where is the source?”

Biennial Hazardous Waste Reports and Supplementary Annual Reports for Groundwater Due March 1, 2020

March 1, 2020 is the deadline for submitting both the RCRA Biennial Hazardous Waste Report and the related Supplementary Annual Report for Groundwater. If your site was a large quantity generator or a treatment storage and disposal facility in one or more months of an odd numbered years, such as 2019, you are required to file a Hazardous Waste Report no later than March 1 of the following even-numbered years (2020). Supplementary Annual Reports for Groundwater, however are due every year by March 1.

Michigan EGLE Provides Clarification on Sample Density for VI Studies

As a consultant and advisor on vapor intrusion (VI) projects implemented throughout North America, South America, and Europe, one of the most frequently asked questions is “How many samples should we take to assess this building?” The answer, as one would suspect, depends on a lot of factors, including the goals of assessment, the size and use of the building, the COCs, etc. If you happen to practice in the State of Michigan, you may be interested to know that EGLE has updated their 2013 VI Guidance document to eliminate some confusion concerning sample density for sub-slab soil gas sample points in commercial buildings.

EPA Appoints Kurt Thiede to Lead Region 5

U.S. EPA (EPA) has appointed Kurt Thiede as EPA Region 5 Administrator. Region 5 includes the states of Minnesota, Wisconsin, Illinois, Michigan, Indiana, and Ohio. Most recently, Mr. Thiede served as Chief of Staff to Cathy Stepp, who he replaces.  Mr. Thiede is an 18-year veteran of the Wisconsin Department of Natural Resources (MDNR), where, prior to joining EPA, he served as Deputy Secretary. He has a Bachelor of Science degree in wildlife management and biology. “I’m humbled and honored to be selected by Administrator Wheeler to serve as the next Regional Administrator for EPA Region 5. I look forward to helping to continue to advance this administration’s priorities of protecting public health and the environment, while promoting a strong and vibrant economy,” said Mr. Thiede in the EPA press release.

Kentucky Releases 2020-21 Compliance Assistance Recordkeeping Calendar for Dry Cleaning Facilities

The use of hazardous chemicals in the dry cleaning process, including perchloroethylene (also commonly called perc or PCE) can pose safety and environmental concerns if not managed appropriately. In fact, we investigate and remediate PCE and its degradation product trichloroethene (TCE) in soil, vapors, and groundwater more than any other contaminant. As a result, dry cleaning facilities have certain environmental requirements for handling and monitoring the use of chemicals in the dry cleaning process. To help, the Kentucky Department of Environmental Protection Division of Compliance Assistance released the 2020-2021 Environmental Recordkeeping Calendar for Dry Cleaning Facilities. Dry cleaning facilities can use the calendar to track chemical purchases and annual usage; record results of required leak checks and equipment monitoring; and prepare in the event of an agency inspection. For more information on Cox-Colvin & Associates, Inc extensive experience investigating and cleaning up PCE and other dry cleaning solvents, contact Craig Cox.

Cox-Colvin & Associates, Inc.

Project Spotlight

Coming Soon in the February Newsletter

  • Latest on PFAS
  • Benefits of video inspection of monitor wells
  • Pump-and-Treat – Can’t live with it, can’t live without it

Upcoming Events

Cox-Colvin & Associates, Inc. personnel are actively involved in the technical and regulatory aspects of the environmental field as it evolves. Cox-Colvin will be participating as presenters, sponsors, or exhibitors at the following environmental conferences in the coming months.

February 4-5, 2020: Craig A. Cox will be presenting “The Importance of Sanitary Sewers as the Expected Preferential Vapor Intrusion Evaluations”The New Jersey Site Remediation Conference (NJSRC), Brunswick, NJ.

March 19, 2020: Vapor Intrusion III Session Craig Cox will be presenting The Importance of Sanitary Sewers as the Expected Preferential Vapor Intrusion Evaluations”, 30th Annual International Conference on Soil, Water, Energy, and Air, San Diego, CA.

March 26-27, 2020: Cox-Colvin & Associates, Inc., will be exhibiting at the 35th Annual Environment, Energy and Resources Law Institute at the Nationwide Conference Center in Lewis Center, Ohio

March 31-April 2, 2020:  Craig A. Cox and Laurie A. Chilcote will be presenting at a Series of Vapor Intrusion EnviroWorkshops.

Workshops are scheduled in:

May 31-June 4, 2020: Session G10 Nate Wanner will be presenting “Evaluating the Potential for Mercury Vapor Intrusion“, The Twelfth International Conference on Remediation of Chlorinated and Recalcitrant Compounds, at the Oregon Convention Center in Portland, Oregon.

May 31-June 4, 2020: Session G11, Poster Group 2, Craig A. Cox will be presenting “The Importance of Sanitary Sewers as the Expected Preferential Vapor Intrusion Evaluations”The Twelfth International Conference on Remediation of Chlorinated and Recalcitrant Compounds, at the Oregon Convention Center in Portland, Oregon.

May 31-June 4, 2020: Session G11 Nate Wanner will be presenting “Where’d That Come From? Differentiating Soil Gas, Sewer Gas, and Outdoor Air in Vapor Intrusion”The Twelfth International Conference on Remediation of Chlorinated and Recalcitrant Compounds, at the Oregon Convention Center in Portland, Oregon.

June 1, 2020: Learning Lab 3:05-3:30 pm Laurie Chilcote and Craig Cox will be presenting “Proven Active Soil Gas Sampling Techniques for Efficient Site Characterization, Vapor Intrusion Investigation and Mitigation“, The Twelfth International Conference on Remediation of Chlorinated and Recalcitrant Compounds, at the Oregon Convention Center in Portland, Oregon.