SACRAMENTO - The Senate on Monday approved creation of a state conservancy to protect the majestic Sierra Nevada, but another environmental bill, which would ban smoking on state beaches, stalled as lawmakers began the last days of their 2004 session. The conservancy bill, by Assemblymen Tim Leslie, R-Tahoe City, and John Laird, D-Santa Cruz, cleared the Senate on a 21-14 vote and was returned to the Assembly, which approved a somewhat different version of the legislation in May. If the Assembly adopts the Senate changes, the legislation will go to Gov. Arnold Schwarzenegger. The beach-smoking bill, by Assemblyman Paul Koretz,...