FRESNO, Calif. (AP) — The U.S. Department of Agriculture is preparing to announce that a grapevine pest that led to fruit quarantines across Northern California has been eradicated in four of the affected counties.Two years of testing has shown that the European grapevine moth no longer is present in Fresno, Mendocino, Merced and San Joaquin counties, meaning the quarantines in those areas can be lifted, the department plans to announce Tuesday.The department's Animal and Plant Health Inspection Service says removing the quarantines means that exports of host commodities such as grapes and stone fruit from those counties can resume to Mexico.Quarantines remain in effect in Napa, Solano, Sonoma, Santa Clara, Santa Cruz and Nevada counties.The destructive moth first was detected in Napa County in 2009.