E Regulating limited well boring contractors and the installation of vertical heat exchangers, changing the terms limited well contractor and limited well sealing contractor to limited well boring contractor and limited well boring sealing contractor; modifying the definition of vertical heat exchanger; requiring the commissioner of health to examine, regulate, license and adopt rules relating to persons constructing, repairing and sealing vertical heat exchangers; increasing the membership of the advisory council on wells and borings to include a licensed vertical heat exchanger contractor; requiring a separate limited well boring contractors license and a permit to construct, repair or seal vertical heat exchangers (ra, ja)