You only need to submit one application if you have a DNS project that includes more than one of these (for example, a scheme involving a railway and solar panels).
Dim ond un cais y bydd angen i chi ei gyflwyno os oes gennych brosiect DNS sy’n cynnwys mwy nag un o’r rhain (er enghraifft, cynllun sy’n cynnwys rheilffordd a phaneli solar).