A 32-year-old Caldwell man is charged with four felony counts of methamphetamine trafficking for selling the drug to undercover officers four times since June. The most current deal occurred on Aug.7, when Sergio Marquez-Castillo sold an undercover officer a half-pound of meth (223 grams) for $5,000. The deal was Marquez-Castillo’s fourth since June 23. In