The SEEC said the environmental provisions "have no place in the debate to invest in our nation's deteriorating transportation infrastructure.
"We compel you to focus on investments to modernize our infrastructure and transportation network instead of policy riders that will hurt Americans' health, their energy security and their communities," the group wrote.
The conference committee that is considering the highway and transit funding legislation is attempting to find a compromise between a
two-year, $109-billion transportation bill that was passed by the Senate
with two temporary extensions of current funding that were approved by
The House has passed an extension of current transportation funding beyond the scheduled June 30 deadline, which would carry highway spending through Sept. 30. But in order for that measure to become law, it would have to also be approved by the Senate.
Lawmakers have begun hinting that the conference committee may not meet its deadline for reaching a compromise.