(December 10, 2015, 2:41 PM EST) -- DENVER — The Colorado Supreme Court heard oral arguments on Dec. 9 in two cases involving regulation of hydraulic fracturing by local entities, as attorneys representing the oil and gas industry insisted that the State of Colorado has a “sufficiently dominant” interest in fracking that preempts local regulations, and attorneys for two different cities contended that preemption should not be presumed (City of Longmont, Colorado v. Colorado Oil and Gas Association, No. 15SC667, and City of Fort Collins, Colorado v. Colorado Oil and Gas Association, No....