Environmental permit part A1 is only available from the Environment Agency​​​​​​​​​​ ​​ ​​​​​​​​Link opens in a new window ​ ​
Mae trwydded amgylcheddol rhan A1 ond ar gael gan Asiantaeth yr Amgylchedd​​​​​​​​​​​ ​ ​​​​​​​​Dolen yn agor mewn ffenestr newydd ​ ​.