Dave Griffin, former deputy police chief for the City of Summerside, P.E.I., has been charged with impaired driving.

Court documents in Summerside allege on June 5 police found Griffin driving in the city with a blood alcohol level above the legal limit.

Former Summerside deputy police chief and MADD East Prince chapter president Dave Griffin has been charged with impaired driving. (CBC) Charges were laid on July 31.

Griffin was serving as the president of the East Prince chapter of MADD at the time of the incident, and according to the organization, has since resigned.

MADD national CEO Andrew Murie told CBC News, if true, the incident is sad for both the organization and for Griffin.

"David was a very good volunteer for us," said Murie.

"He did everything we ask of a volunteer and more."

Murie said in his 18 years as MADD CEO he has never had to deal with an incident like this.

Griffin retired from the Summerside police force in 2011 after 40 years of service.

Griffin has not entered a plea on the charge. His next court date is August 27, in Summerside.

CBC has not been able to reach Griffin for comment.