(Francisco Kjolseth | The Salt Lake Tribune) A spent needle lies on the ground near 800 W. and North Temple as members of the Utah Harm Reduction Coalition comb the neighborhood picking them up during a recent syringe exchange. A bill from Sen. Jen Plumb, D-Salt Lake City, would encourage participation in and proper disposal of needles through syringe exchange programs by creating an "affirmative defense" for those caught with needles obtained through them.