After notice to the qualified beneficiaries, a trustee may combine 2 or more trusts into a single trust or divide a trust into 2 or more separate trusts, if the result does not impair rights of any beneficiary or adversely affect achievement of the purposes of the trust.
Combination and division of trusts
D.C. Code § 19-1304.17 — under Creation, Validity, Modification, and Termination of Trust..
D.C. Code § 19-1304.17