1. Employee vs. Employer Contributions
The Mcgill Environmental Systems 401(k) Psp & Trust likely includes both employee deferrals and employer matching contributions. A QDRO can divide either or both, but you must clarify which contributions are being allocated to the alternate payee (the non-employee spouse).
One important consideration: employer contributions often have vesting schedules. If amounts were not vested at the time of divorce or QDRO drafting, they may not be available to transfer.

