Look, I'm no expert, though I know a little, not enough to hurt me none... This inquiry was about to set me off and write some things that wouldn't be too delicate. Suffice it to say that this is the thing I feel most empathy for superintendents.
As a board member, you certainly have your members best financial interest to oversee, and balance that with some reasonable expectations as to the goals you set in regards to the level of maintenance that is is appropriate to expect and achieve at your facility. But, can't you see how patently unfair it is to come on here and start second guessing your superintendent with NO SCRAP OF RELAVANT INFORMATION. What credence could you possible put in any shot in the dark answer you could receive here over the professional judgement of the superintendent YOU HIRED to do the job you told him or her you wanted done?
There are proper ways to do a sort of "due diligence" investigation of COMPARATIVE maintenance costs. For one thing, you could find a local CPA that does the books of regional clubs (public daily fee or private) and CONSULT to find COMPARATIVE costs of SIMILAR FACILITIES. If you have Municipal courses, you should be able to get the books as a taxpayer. That may take some work. But doing a little leg work in a professional manner would be far better than taking a shot on an open forum.
Another thing you could do is research on your own by taking an affiliate membership in GCSAA and paying for and studying their many books and literature on the topics including reading some to the comparative studies they sponsor on various costs of GCM. All relavant costs of equipment are available to you, and all you have to do is trust some professional (if you don't trust the turf professional YOU HIRED) to consult based on what your prestated expections fo the level of maintenance your members desire. BUT DON'T START MOVING THE BAR ON THE POOR SUPER, AND EXPECT HIM/HER TO DO WHAT SOME KNUCKLEHEADS WHISPER IN YOUR EAR.
PS: I am not calling Bill or Joe an knucklehead either. But, they can only tell you generalities, which is fine. But, do it based on proper comparatives in your area and based on your goals and needs.