AUGUSTA — Volunteer Stephen Condon and Kennebec Land Trust interns Jack Daley and Jordan Tanguay followed on the heels of Jean-Luc Theriault who, wielding a chain saw, left a trail of branches behind for them to collect and throw into the woods away from the newly blazed trail as he made his way up Howard Hill. The four, and a slew of other volunteers, are working to establish new trails on the 164-acre city-owned property, improve public access and remove invasive plant species. A plan for the land envisions it as a “historic forest park” with parking available for people to access it near the State House complex, Ganneston Drive in Augusta and on the Stevens Common property in Hallowell.