Fairfax County, Washington Gas outline repairs and monitoring after Quail Pond Court explosion

Courtney Arroyo, director of the Fairfax County Department of Emergency Management and Security, opened a briefing saying the National Transportation Safety Board is leading the investigation into a Feb. 15 house explosion and gas leak that affected homes near Quail Pond Court and Belle Plains Drive.

Fairfax County Fire and Rescue Chief Craven said county responders logged 362 individual unit responses, about 2,182 hours of firefighter service and a combined total of roughly 5,000 command‑staff hours during the incident response. "We have supported the NTSB's investigation in the systematic testing and repairs completed by Washington Gas," Craven said, describing repeated leak surveys, home‑by‑home assessments and staged clearances for reoccupation.

Washington Gas officials said crews repaired a leaking section of pipe at the corner of Quail Pond Court and Belle Plains Drive and conducted additional pressure testing of the surrounding distribution system that "found no evidence of any other leaks." Jason Weekley, senior vice president of utility operations for Washington Gas, called the event "tragic" and "very rare," and said the NTSB directed further pressure testing and is overseeing the investigative steps.

County and utility officials described a layered safety approach for the neighborhood: repeated leak surveys, defined safety perimeters where gas migration was indicated, a phased re‑pressurization of the pipeline in four stages with leak surveys at each stage, and individual interior gas readings before homes are cleared. Chief Craven said the fire department will perform 48 continuous hours of interior monitoring in homes of the 19 residences still under review and that readings must remain at zero for at least the final 12 hours of that period before officials approve reentry.

Michelle Musgrove, Washington Gas vice president of customer experience, advised that anyone who smells gas should call 911 or the company's 24/7 emergency services line; the company will dispatch crews based on the information callers provide. Weekley also said Washington Gas has accelerated purchase and deployment of advanced leak‑detection devices, noting that "state code requires a leak detection every 5 years" while the company conducts surveys on a three‑year cycle and plans to expand detection efforts.

During the question period, an unidentified resident asked why crews on site the day of the explosion had not prevented the event, asserting that neighbors "made that call on the day of this explosion, and they say it wasn't the gas." Officials repeatedly said those specifics are part of the NTSB's investigation and "will be in the final report from them." Washington Gas and county speakers emphasized they cannot release certain details while the NTSB is the lead investigative agency.

Officials said most of the 19 remaining homes could be cleared for reoccupation within about 24 hours if monitoring remains stable; reentry will be coordinated individually so residents can see the zero readings and have confidence in the checks. The briefing closed with an announcement of a virtual town hall for residents tonight at 7 p.m.; questions can be submitted in advance to quailpond@publicinput.com.

The NTSB continues to lead the investigation; county and utility officials said they would continue to provide updates as the NTSB and their own testing allow.