Restoration of Mariposa Grove Phase 4 includes modification of existing SWPPP BMPs, removal of Upper Grove Area asphalt surfacing, removal of Lower Grove Area parking lot, removal of portions of Lower Grove Area tram road, construction of Lower Grove Area Bypass Road, road to Grizzly Giant and Grizzly Giant parking lot, Lower Grove Area rough grading, construction of Lower Grove Area septic system, including leach field, and septic pumps (including installation of temporary generator), installation of Lower Grove Area underground utilities, construction of Lower Grove Area parking, installation of concrete pavement, cement concrete curbs and asphalt concrete pavement, installation of base course of sidewalk, , and salvage of duff and topsoil, Dry & wet stack Rockery Walls.

This project made sustainable use of the existing asphalt roadway by recycling the material for use as aggregate sub base under the proposed new roadway design.

This project is in a remote location where forward planning is critical to keep the project moving and on schedule. Working around the Giant Sequoias is both rewarding and challenging. MBC had exercise extreme caution while working in and around these majestic giants. The National Park Service and MBC worked together to avoid damaging the sensitive root system throughout our excavation and grading area. Daily design changes were common to avoid damaging the root system.