Mr Bartlett was an employee of Woodbank when harvesting was undertaken but has since resigned.
Breaches of the RMA came to light after the Ngawha Geothermal Plant, situated upstream of the Northland College block, notified NRC of an anomaly in water quality it suspected was due to logging operations.
The NRC was not aware until investigations began that part of the area Woodbank Trading and Sunnex Harvesting were working on qualified as significant indigenous wetlands.
The logging operations resulted in discharge of sediment and vegetation directly into unnamed tributaries of the Taikawhena Stream and in the Taikawhena Wetlands.
Between 0.85 hectares and 1.36 hectares of land was estimated to have been damaged as a result of the logging operation.
NRC lawyer Karenza de Silva told the court shortcuts were taken during a commercial operation when both companies and Mr Bartlett should have had a harvesting plan and a pre-harvesting meeting.
Matthew Atkinson, lawyer for Woodbank Trading, said his client's actions were not deliberate and that the company immediately began remedial work on the site that cost about $35,000 when breaches were identified.
Mr Bartlett was represented by Colleen Prendergast and said he was genuinely remorseful and regretted his actions that led to a prosecution.
She sought a conviction and discharge without penalty but Judge Craig Thompson refused, saying deterrence and denunciation were important factors he needed to take into account.
Lawyer Wayne McKean said the actions of Sunnex Harvesting was "careless", not deliberate and asked that any fine imposed did not crush the company.
Woodbank Trading was fined $25,000, Sunnex Harvesting $21,000, and Mr Bartlett $7500.
All were ordered to pay $5000 each in reparation.
