Journeyman wrote in
:

Looking at the plates, 10/28 has minima 300-1 and 600-1 respectively.
The procedure for runwya 10 is to climb runway heading to 2300 before
proceeding on course. The MSA for the area is 4200. How do you get
from the DP to the nearest Victor airway safely when it's 300 and 1?

I'm not sure I understand your question. You just fly the published DP.
If you climb on runway heading until above 2300, then you will have
sufficient obstacle clearance *in that direction*. The MSA is based on
any obstacle in any direction, unless otherwise specified, so you don't
need to use it for everything. A DP takes into consideration the
obstacles, and if you follow it, you will have sufficient clearance.

--
Regards,

Stan

"They that can give up essential liberty to obtain a little temporary
safety deserve neither liberty nor safety." B. Franklin