The funding for the $5.3 million project, initially set at $6 million, is already in the bank from excess revenues from the Optional One-Percent Sales Tax No. 14.
Casper will install fencing to keep out off-road vehicle, limit the noise from snowplows, clean up trash, and look at adjusting land contours to divert runoff.
Employees who accept the offer would receive a cash payment of $50 for every month of continuous service up to 20 years and health care premiums paid through December.
Hedquist filed an amended complaint in November, saying some city officials waged a retaliation campaign that cost his construction company thousands of dollars of business.
Local governments can hold executive sessions for personnel, legal and real estate matters, but they cannot make collective decisions, according to the Wyoming Public Meetings Act.
The building receiving the new heating system houses a clinic for the homeless, residences for low-income families and individuals, and services for residents.