Mediators of Southern California
Under California law, neither the absence of a definite method nor the presence of "alternative options" for appointing an arbitrator renders an otherwise valid arbitration agreement unenforceable.
HM DG, Inc. v. Amini, California Court of Appeal, Second District, Div. Three, case no. B242540, filed September 20, 2013
Link: www. courts.ca.gov/opinions/documents/B242540.pdf