Black tar herion Oscar A. Esquival-Pena, 23, of Auburn, Wash., and Juana Esquival-Pena, 35, of Fife, Wash., were arrested.

Two Washington residents were arrested in Tehama County after 40 pounds of black tar heroin were found during a traffic stop Thursday midday on northbound Interstate 5 at Sourgrass Road.A California Highway Patrol K-9 unit was making a stop for a speed violation at 11:50 a.m. Thursday, a CHP release said.Upon contact, the CHP officer saw indicators of possible drug trafficking and deployed a narcotic detection dog.The dog raised an alert on what was later discovered to be a hidden compartment with a remote locking mechanism within the dashboard, where the drugs were later located, the release said.The black tar heroin has a rough street value of $1.8 million, the release said. The vehicle's occupants, Oscar A. Esquival-Pena, 23, of Auburn, Wash., and Juana Esquival-Pena, 35, of Fife, Wash., were arrested.
Both were booked into Tehama County Jail on charges of possession and transportation for sale of heroin, said CHP Officer Phil Mackintosh. They were also booked on the charge of possession of a false compartment, he said.