Woody Vegetation Removal - Mechanical Vegetation Management

The Contractor shall provide the necessary equipment, operator(s) and associated appurtenances to remove light to heavy woody vegetation in the identified areas including, but not limited to, levees, canals and around water control structures. The District has estimated approximately 14.5 acres for this mechanical vegetation removal project (10-acre – L-73; 0.5-acres - L-73 Sect 2B; 3.5-acres – L-74N; 0.5- acres – L-77E). Specialized equipment, tracked vehicle capable of mulching trees up to 24-inches in diameter, measured at breast-height (DBH), may be required for removal of the woody vegetation. This same specialized mulching equipment must be capable of mulching material to a size no greater than 2-inches in diameter and 12-inch long. Additionally, the equipment shall be capable of mulching the vegetation to ground level. Where standing water exists, the woody vegetation may be mulched to just below the water level. Work shall include mulching vegetation in specified areas, leaving only those trees that have been identified and tagged by the District. The vegetation shall be mulched to ground level. Spread mulch evenly in the work area or as directed by the District so as to not leave large piles of mulch. In some cases, the equipment used must be capable of working from the top of the levee to prevent damage to levee slopes (sod and/or riprap) and must be capable of cutting and mulching vegetation at the toe of the levee, to a minimum of 15-feet beyond the toe of slope. Where equipment cannot reach the toe of the levee from the top travel-way, the equipment may work from the slope of the levee (with the approval of the District) but it must be equipped with low ground pressure tracks to prevent damage to levee slopes and toes. If levees are wet, work shall cease until dry enough to prevent the equipment from sliding on the levees and causing damage. Damage to levee slopes shall be repaired by the Contractor within 72-hours and prior to invoice being submitted.

Division 32 -

Exterior Improvements, Operation and Maintenance of Exterior Improvements, Irrigation, Planting Irrigation, Planting, Planting Preparation, Soil Preparation, Landscape Grading.