REVERE – Spring is here and the city is preparing to make major repairs and other improvements to Hill Park.Mayor Thomas Ambrosino said the work includes repairs to the outfield fence and the tot lot, restoring the basketball and tennis courts, and upgrading the bocce court.Works will also rebuild a collapsed wall in the park and cover the softball field with loam and seed. Two dead trees need to be removed between the basketball courts and the outfield fence and the chain link fence surrounding the softball field needs sections repaired or replaced.The ball court repairs include sealing cracks in the play surface and painting marker lines. The tot lot repairs will focus on adding a safe surface under the play equipment.The city is using $150,000 allocated by the state Legislature to fix up Hill Park but it hopes to attract a private vendor to make extensive changes to Frederick Park.Ambrosino suggested last fall that the city advertise for vendors interested in building and operating a 54,000 square foot building at Frederick Park.Under an agreement with the city, the vendor chosen to do the park improvements would also install artificial turf on the park field for soccer, baseball and softball.In proposing the plan, Ambrosino warned Frederick’s athletic field would be “unlikely to receive substantial appropriations without private funding.”Frederick abuts the Beachmont School and one scenario for the private-public arrangement calls for laying out overlapping playfields and building the facility next to the school.Ambrosino said a municipal and private partnership to improve the park requires approval by the state Legislature and approval from state and federal officials.”The latter two approvals are likely due to the fact that public funds were previously utilized to improve this parkland,” he told councilors last fall.State Representatives Kathi-Anne Reinstein and Robert DeLeo worked to secure state money to fix up Hill after neighbors complained about vandalism in the park and its deteriorating condition.An Everett family last year replaced a plaque in the park honoring Reinstein’s late father, former mayor and state legislator William Reinstein, after it was vandalized.