Thomas Durney, the new general manager at WASH-FM (97.1), has decided to flip back to a standard adult contemporary format starting in mid-February. That was the sound when WASH was at its dollars and popularity peak and considered one of the best stations in the country. John Moen has joined the station as program director. Most recently he was operations manager for E-Z Communications in Miami, where former WASH program director Bill Tanner is now working. Moen also spent seven years here working for United Broadcasting. The station has advertised for on-air, engineering and sales personnel. More Changes

Last Monday WPGC-FM (95.5) switched its call letters to WCLY, or Classy 95, to emphasize its adult contemporary format. The AM station remains WPGC (1580) . . . Rick Dees, host of television's "Solid Gold" and the highest-rated deejay in Los Angeles, can now be heard on WRQX-FM (107.3) with his "Rick Dees' Weekly Top 40," Saturdays from 6 a.m. . . . Gordon Barnes' contract with WTOP-AM (1500) wasn't renewed, and the station is weathermanless at the moment . . . Paul Drew has resigned as director of Radio Marti, the U.S. Information Agency's news service for Cuba, which is reportedly ready to start next Monday . . . Brian Bieler, the general manager and vice president of WMZQ-AM/FM (1390/98.7), has been appointed president of Viacom Broadcasting Inc., broadcast division. WMZQ-AM is now simulcasting the 3 to 6 p.m. portion of WMZQ-FM's Dino Delgallo. Also on WMZQ-AM, Gary Balabam is now working the 10 a.m. to 3 p.m. shift. Milestones

In the 1985 "Guinness Book of World Records," it is reported that the czar of talk has broadcast more than 10,600 hours of "The Larry King Show." If you've been listening to King on WTOP at midnight since Jan. 30, 1978, you've heard the equivalent of 444 days of nonstop interviewing. King, syndicated by Mutual, is renegotiating his contract, which is up in 1986. But his agent, Bob Woolf, says they are still considering other offers . . . In Warrenton, Va., today, WKCW-AM (1420) is celebrating 25 years of continuous country music. The station, according to general manager Robert J. Watson, is calling back nine former disc jockeys, who will play records from 1960 and read the news of the time from the Fauquier Democrat. Numbers and Baskets

WETA-FM (90.9) received 2,000 calls and raised $49,600 in its first on-air auction, Jan. 14-16 . . . The Smallstars basketball team of WKYS-FM (93.9) has started another season of charity games. So far it has won five, tied one. Tonight it plays the staff of Newport Prep in Kensington . . . Q 107 mailed 1.3 million catalogues containing $650,000 worth of prizes throughout the Washington area. Now, says Marty Wall, the station's director of advertising and promotion, "we're getting 1,000 letters a day from people who claim they haven't gotten their catalogues" . . . In another giveaway, WGMS-FM (103.5) is holding a Mozart trivia contest, keyed to the anniversary of the composer's birth on Sunday. Winners get a Mozart recording, losers one of Salieri. Calendar Jottings

Next Monday through Friday National Public Radio's "Morning Edition," heard on WAMU-FM (88.5) from 6 to 10 a.m., will feature a series on the drought in Chad, produced by John McChesney with correspondent Daniel Swerdling . . . Gary Murphy of Q 107 will be the host Monday night at a video audition for Dick Clark's "Putting on the Hits" at Rumors (19th and M, NW). Judging individuals and groups who can lip-sync Prince and Madonna will be David Haines of WAVA-FM (105.1), Adam Smasher of WWDC-FM (101.1) and John Murphy of WBMW-FM (106.7) . . . Next Thursday comedian Franklin Ajaye will appear on Seth Morris' comedy show on WPFW-FM (89.3), from 11:30 p.m. to 2:30 a.m. Ajaye will play some excerpts from his forthcoming album . . . The Glenn Miller Orchestra, featuring Dick Gerhart, will perform Feb. 1 at a dance sponsored by WWDC-AM (1260). Proceeds from the 9 p.m. event at the Mayflower Hotel will benefit the American Heart Association . . . WPKX-FM (105.9), which was off the air for five hours Wednesday morning because of a broken cable on King Street in Alexandria, will broadcast an early morning remote on Thursday with John Bodnar and Paul Bottoms from Bob's Big Boy on Old Keene Mill Road, Springfield.