Projects

Hartman Environmental has worked on vapor intrusion sites for periods as short as 1 day to periods lasting several years. Some of the more complex sites are listed below.  There are many other smaller sites such as service station sites, dry-cleaner sites and individual residences that also have been assessed, but are not listed here.

Continuous Monitoring – Thermal heating remediation site – Oakland, CA 

Date Conducted: Feb 2017 – ongoing

Client: OTIE 

Oversite Agency: EPA Region 9

Project Description:  Continuous monitoring of indoor and ambient air for vinyl chloride, TCE and PCE at 14 locations across and bordering a site undergoing thermal heating remediation.  This is the first time that vinyl chloride in air has been measured in real-time.  Data were collected prior to heating and during heating to ensure the vapor recovery system was performing adequately and make adjustments based upon the real-time data.  As of May 10, 2017, approximately 6,000 measurements of vinyl chloride, TCE and PCE were collected. Data are available in real-time to the client and EPA and also automatically uploaded to EPA’s Viper database software.

Continuous Monitoring – Industrial Facility, Baltimore, MD 

Date Conducted: Feb 2017 – April 2017

Client: Tetratech/CDM Smith

Oversite Agency: none

Project Description:  Continuous monitoring of room air and sump air in a basement for TCE and PCE at 15 locations with goal to understand the cause and effect of TCE concentrations in a large basement under an industrial building. The real-time data enabled immediate recognition of indoor TCE concentration variations when sumps were covered and uncovered.   Approximately 8,000 measurements of TCE and PCE were collected over a 2-month period. Data were available for viewing by the client and property owner in real-time on the web.

Continuous Monitoring – Single Family Residence – Los Angeles CA 

Date Conducted: October 2016

Client: Ramboll

Oversite Agency: CA-DTSC

Project Description:  Continuous monitoring of indoor and ambient air for TCE at 8 locations inside and outside a single family residence with goal to determine the source of TCE previously detected.  Data were collected for 30 days.  The real-time data enabled immediate recognition of indoor TCE concentration variations when air filtration units were on and off and when a sub-slab mitigation was on and off.

Continuous Monitoring – Thermal heating remediation site – New Hampshire 

Date Conducted: June 2016 to January 2017

Client: Hull & Associates 

Oversite Agency: EPA Region 1, NH-DEH

Project Description:  Continuous monitoring of indoor and ambient air for TCE and PCE at 15 locations inside an active manufacturing facility at a site undergoing thermal heating remediation.  Data were collected prior to heating and during heating to ensure the vapor recovery system was performing adequately. The system ran uninterrupted for over 7 months and approximately 30,000 measurements of TCE and PCE were collected. Data were available for viewing by the property owner, consultant and EPA in real-time on the web.  The system enabled unexpected detections of TCE to be instantly recognized and tracked down to indoor air sources.

 

Site: Commercial building & surrounding neighborhood, Indianapolis, IN

Date Conducted: June 2013 to January 2014

Client: EcoInnovators

Oversite Agency: Indiana DEM

Project Description:  Vapor intrusion assessment of an existing commercial building and surrounding residential neighborhood. Contaminant of concern: PCE.  Hartman wrote investigation work scope, oversaw soil gas sampling program to define PCE vadose zone contamination, conducted on-site indoor air analysis, set-up continuous monitoring of indoor air in the commercial building, oversaw indoor air canister sampling programs of building & residences.

Site: Residential neighborhoods, Phoenix AZ

Date Conducted: March 2012 to December 2013 (project in progress)

Client: Arizona DEQ

Oversite Agency: Arizona DEQ

Project Description:  Vapor intrusion assessment of over 100 residential units located over a PCE groundwater plume.  Hartman providing work scope, overseeing soil gas sampling program to define groundwater contamination, conducting on-site indoor air analysis, overseeing indoor air canister sampling program.

  

Site: Clocktowers Site, Lancaster PA

Date Conducted: March 2011 to Ju;y 2012

Client: General Dynamics OTS

Oversite Agency: PA-DEP & EPA Region 3

Project Description: Vapor intrusion assessment of TCE to existing school and residential units located on a former watch manufacturing facility property.  Hartman providing work scope, conducted soil gas, sub-slab soil gas, and indoor air sampling programs, on-site analysis by Method TO-14, and data interpretation.

 

 Site: EPA-ORD Research House, Indianapolis, IN

Date Conducted: August 2011 to February 2012; December 2012 to March 2013

Client:  Dr. Brian Schumacher, EPA-ORD, Las Vegas

Oversite Agency: EPA-ORD

Project Description: Research program by EPA studing temporal variation of soil gas and indoor concentrations.  Hartman proving real-time, continuous (24 hour) monitoring of chloroform, TCE, and PCE by method TO-14 for a period of 7 months.

 

 Site: Residential neighborhood, Phoenix AZ

Date Conducted: June 2011 to August 2013

Client: Motorola/Freescale Semiconductor

Oversite Agency: EPA Region 9

Project Description:  Vapor intrusion assessment of over 100 residential units located over a TCE groundwater plume.  Hartman providing work scope, conducted soil gas, sub-slab soil gas, and indoor air sampling programs, and data interpretation.

 

Site: Residential neighborhood, Miles City, MT

Date Conducted: May 2011 to July 2012

Client: Trinity Railcar Inc., Dallas TX

Oversite Agency: Montana DEQ

Project Description:  Vapor intrusion assessment of houses neighboring a rail yard located over diesel contamination.  Hartman providing work scope, conducted soil gas sampling programs, and data interpretation/evaluation.

  

Site: Hanover Kansas

Date Conducted: 2008 through 2011

Client: USDA & Argonne National Laboratory

Oversite Agency: Kansas DHE

Project Description:  Hartman consucted a preliminary vapor intrusion screening assessment of approximately 20 townships in rural Kansas with former or current grain storage silos using carbon tetrachloride.  In Hanover KS, Hartman provided a detailed vapor intrusion assessment of carbon tetrachloride in ~ 20 residences located near a former US grain storage site.  Hartman provided work scope, conducted soil gas, sub-slab soil gas, and indoor air sampling programs, and data interpretation. 

  

Site: Marcellus Shale Methane Investigations – rural PA

Date Conducted: 2010 through 2011

Client: Chesapeake Energy & Groundwater Environmental Services

Oversite Agency: Kansas DHE

Project Description:  Hartman provided SOPS and training on soil gas methane investigations in and around structures, including the source identification of methane gas.

  

Site: Residential neighborhood, Seal Beach, CA

Date Conducted: 2009 – 2010

Client: Arco

Oversite Agency: CA-EPA

Project Description:  Vapor intrusion assessment of ~ 50 houses neighboring a operating Arco service station.  Hartman providing work scope, conducted soil gas, sub-slab soil gas, and indoor air sampling programs, and data interpretation.