The coach's base salary is $49,000 per year. He gets vacation and medical benefits that put him in the high 50s, with payroll taxes costing the balance totaling $61k.  
Also of note is that none of the $64,000 paid "into the district’s operating funds" by NWAC families actually goes into operating funds. A substantial portion of it is passed directly through for meet fees, travel expenses, and league registrations. The rest is far from enough to pay coaching expenses, creating a burden on those operating funds to cover the balance. 
That doesn't even address the issue of the cost of 4,500+ lane hours used by the team with no return back to the district. 
The commission is dealing with whether, when so many other activities and sports are run independently by all-volunteer coaches and supporters, the taxpayers should bear this burden.