Police asked residents to stay away from the area of Quincy Medical Center after a gas leak was reported.
The law for the first time creates a uniform, three-tiered classification system for gas leaks.
By one estimate, there are more than 20,000 gas leaks across Massachusetts at this time. The leaks not only present a public safety concern, but one for ratepayers as well.
A gas leak was forcing evacuations in Cambridge on Monday morning.
More than 100 people were evacuated due to a gas leak in Chelsea Monday night.
A dialysis center and a shopping plaza have been evacuated due to a potential gas leak on Pine Street.
A gas leak forced an evacuation at a lab on the campus of MIT on Thursday.
Part of Route 9 near the Atrium Mall was closed just before noon Wednesday due to a natural gas leak.
A large gas leak forced evacuations in the Logan Square area of Hyde Park on Thursday.
A construction crew mistakenly hit a gas main in a Hyde Park neighborhood, causing a massive explosion that leveled a house.