The proposed project will create a larger, ADA-compliant space at the Mitchell Canyon Staging Area of Mount Diablo State Park to accommodate the growing number of park visitors. In total, the project consists of four (4) main elements; the Education Center, a Native Plant Garden and Pavilion, rehabilitated restroom facilities and an improved parking area. Work will:
Remove an existing Park Host campsite, metal storage shed and the shed’s existing concrete slab;
For the Education Center:
o Remove an approx. 4-foot-high, damaged, retaining wall and install proper sub-drainage with swale inlets at the top;
o Remove a nearby above ground power pole;
o Excavate a trench from a power pole located further away, through the parking lot to the new building to underground the necessary electrical utilities; and
o Construct a new 1,600 square foot wood-framed building.
Forthe Native Plant Garden Pavilion:
o Construct an 850 square foot, open air pavilion, to provide visitors with posted information and for much needed shade;
o Construct a lookout for viewing of the Native Plant Garden;
o Extend the walking paths through the Native Plant Garden and make them ADA-compliant;
o Add drainage to the area to alleviate the possibility of flooding during the rainy season, and direct water away from the Education Center and toward Mitchell Canyon Creek; and
o Add or repair trail work, signs and gateways in the vicinity of the existing plant garden and trailhead.
For the Restroom Renovations:
o Remove the existing damaged roof and replace with a non-combustible Class ‘A’ metal roof;
o Reconfigure the interior to accommodate ADA accessible stalls and fixtures; and
o Construct a storage shed on the backside of the structure to house tools used to maintain the Native Plant Garden.
For the Parking Lot and Plaza:
o Excavate approx. 2 ft deep to establish appropriate grades for ADA access to the plaza, and through to the Native Plant Garden Pavilion, Education Center, restrooms, and Mitchell Canyon Trailhead from the ADA parking spaces, school bus loading zone parking, and the gravel parking lot adjacent to the plaza; and
o Regrade portions of the gravel parking lot to accommodate a fire truck turn around.