After a closed session, Seneca City Council voted last night to add two more years to the contract of its long-time administrator, Greg Dietterick. Mayor Dan Alexander says Dietterick had three years left on his contract. He’s now being extended an additional two years. After last night’s meeting, Alexander told 96.3/WGOG NEWS that further negotiations with Dietterick will also determine if the city administrator is to receive additional compensation. Two years ago, Dietterick signed a deal with Seneca for a base salary of nearly $152 thousand. Since then, city officials say, Dietterick, like all other city workers, has received two, 3% salary increases.