Establishes the class B felony of criminal sale of a controlled substance upon the grounds of a drug or alcohol treatment center

This bill creates a new class B felony offense for selling controlled substances on the property of or within 1,000 feet of a drug or alcohol treatment center or methadone clinic. It directly affects individuals who sell drugs in these specific locations, including buildings, parking lots, and public areas like sidewalks or streets within the defined zone. The law establishes that selling drugs in violation of certain existing drug laws within these areas automatically qualifies as this serious felony, with a rebuttable presumption of knowledge if facility signs are posted. This changes penalties for drug sales near treatment facilities, making them punishable as a class B felony instead of a lower-level offense.