Browse Through Our Various Monitoring and Assessment 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 September 2017, approximately 25,000 measurements of vinyl chloride, TCE and PCE have been 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 July 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 studying 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 conducted 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 an operating Arco service station. Hartman providing work scope, conducted soil gas, sub-slab soil gas, and indoor air sampling programs, and data interpretation.