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Former Jacksonville residents plead guilty in marijuana trafficking case

Two former Jacksonville residents were sentenced to a combination of prison time, supervised release and parole for their roles in a national trafficking conspiracy moving hundreds of kilograms of marijuana grown in Jackson County.

Alex David Koplin, 34, and Tina Marie Waterfield, 38, pleaded guilty to one count each of conspiracy to commit money laundering, with Koplin also pleading guilty to a count of conspiracy to distribute and possess with intent to distribute a controlled substance, according to a press release from the U.S. Attorney's Office.

Koplin was sentenced to 31 months in federal prison and three years' supervised release. He will also pay $150,000 in a forfeiture money judgment as part of his plea agreement, the release said.

Waterfield, 38, was sentenced to five years of probation.

The U.S. Attorney's Office said that Koplin moved to Oregon from Georgia in 2011 to work in the marijuana industry. Over the next few years, he bought property in Jackson County and started a marijuana grow. Working with other growers, he combined harvests, brokered sales and transported marijuana from Oregon to other states, including Illinois, Georgia and North Carolina.

Between November 2014 and June 2016, that amounted to about 260 kilograms of marijuana, the release said.

Between 2013 and 2016, Waterfield received approximately $494,000 in "unexplained deposits" to her bank accounts, the U.S. Attorney's Office said. Those were later traced to Waterfield's PayPal transactions from unlawfully manufacturing, selling and shipping marijuana edibles to customers across the country.

In April 2017, investigators served a federal search warrant at Koplin and Waterfield's home, seizing marijuana plants, unprocessed cut plants, butane honey oil and $44,226 in U.S. currency, the release said.

The U.S. Drug Enforcement Administration, IRS-Criminal Investigation, Homeland Security Investigations and Medford Police Department contributed to the investigation.