Long Brothers is an actively operating clothing dry cleaner identified by the District Department of the Environment (DDOE), Land Remediation and Development Office, for being located immediately next to a child development center and suspected of causing a release of the dry cleaning chemical perchloroethylene (PCE) at some point in its 60-year operating history. The DDOE conducted a preliminary assessment and site screening inspection at the site pursuant to its pre-remedial cooperative agreement with EPA in May 2012 and September 2013, respectively. The site screening inspection confirmed that a historic release of PCE and other chlorinated solvents has occurred.
The FOSC initiated the removal site evaluation in early January, 2014 by asking for consent to enter the Dawn to Dusk Daycare for purposes of implementing an indoor air sampling plan. Consent was initially denied and subsequently provided by facility owner for Jan 17 and 18, 2014 time frame. Summa sample cannisters were placed in basement of 2907 7th St. and first floor as well as the first and second floors of the 657 Lebaum St. addresses of the daycare. Additionally the Maryland Civil Support Team provided mobile gc/ms air monitoring support and data on January 18, via their Hapsite system.
On January 24, 2014 the EPA Ft. Meade regional lab returned the indoor air data. The data revealed elevated results for PCE at the 2907 7th St address, both in the basement breathing zone and first floor breathing zone. PCE results for the 657 Lebaum St. address were not elevated for both the first and second floor breathing zones. On January 29, 2014 the DDOE notified the FOSC that they hired a contractor to install a vapor mitigation system at the 2907 7th St. location. Followup indoor air sampling will occur by this contractor on January 31, 2014. The OSC has decided to terminate his pending followup removal site evaluation and notified the DDOE of such.
On 02/24/2021 the DDOEE, Chief of Land Remediation and Development Branch, Toxic Substances Division, requested that EPA revisit this Site to assist with determination of any ongoing vapor intrusion threats. Of primary concern is the overall efficacy of the SSDS system installed by the DDOEE contractor at the Dawn to Dusk Child Development Center back in 2014.