The senior county council engineer suspended earlier this year after an investigation into planning matters was yesterday fined £6,000 for breach of a condition of the Forestry Act on his lands at Whitefield, Beaufort, Co Kerry.
Three other summonses of alleged illegal felling of more than 400 trees were withdrawn.
Donal Mangan was one of two senior officials suspended for a week in April, following the planning investigation in which 27 staff of Kerry County Council were issued with disciplinary warnings.
Yesterday at Tralee District Court, Mangan (33), of Langford Street, Killorglin, Co Kerry, pleaded guilty to not treating coniferous tree stumps with urea immediately after felling on October 18th, 1999.
Ms Elma Sheahan, for the Department of the Marine and Natural Resources, said Section 40 of the Forestry Act 1946 laid down that each tree stump should be treated with urea immediately on felling to prevent fungal infection, and not to do so was a breach of the limited felling licence granted to him by the Department.
Mr Eugene Curran, a forestry inspector with the Department of the Marine, visited the site on January 31st, 2000, and on subsequent dates. He came across 300 conifer stumps not treated. Judge Terence Finn fined Mangan £20 for each tree and gave him two months to pay the fine.