Marine Corps Air Station (MCAS) Yuma, AZ

As a subcontractor, GCE performed paving and concrete repairs at various locations at MCAS Yuma, AZ.

• Building 1088. GCE repaired the approximately 1,230 square yard parking lot in accordance with the requirements of the contract. Improvements to the parking lot included demolition of the existing paved surfaces, regrading and improving the drainage flow patterns within the parking area, placement and compaction of aggregate base, construction of concrete valley gutters to direct storm drainage flow to the existing lot drainage points, installation of 3" hot-mix asphalt concrete (AC) pavement, new pavement markings, and new precast concrete parking bumpers at the building entrance sidewalk area. Topographic survey was provided for the establishment of existing and new grades for submittal purposes. Traffic control was provided, and construction was staged to maintain adequate facility access during construction.
• Building 1175. GCE repaired the approximately 5,600 square yard parking lot in accordance with the requirements of the contract. Improvements to the parking lot included demolition of the existing paved surfaces, regrading and improving the drainage flow patterns within the parking area, placement and compaction of aggregate base, construction of concrete valley gutters to direct storm drainage flow to the existing lot drainage points, installation of 3-inch hot-mix AC pavement, new pavement markings, two new Americans with Disabilities Act (ADA)-compliant sidewalk ramps, and new precast concrete parking bumpers at existing locations. In addition, GCE provided topographical survey, storm drainage analysis, and incidental storm drainage mitigation engineering calculations to provide proper drainage to the existing parking lot. GCE expanded the existing retention basin area located to the east of the existing parking lot and provided storm drainage structures and subsurface piping sufficient to divert storm drainage flow to the retention basin. Traffic control was provided, and construction was staged to maintain adequate facility access during construction.
• Rotary Aircraft Refueling Apron. GCE removed and replaced approximately 25,000 lineal feet of existing joint sealant and backer rod on the existing apron. Existing apron joints varied from approximately 1/4 to 2 inches in width. All joints were properly cleaned and prepared for new joint sealant in accordance with the contract document requirements. Additionally, the perimeter asphalt skirt joints where they meet the concrete apron were sealed. Existing concrete apron panels which were vertically or horizontally displaced remained as-is and joints were repaired at these panels in accordance with best practices for joint sealing. Existing pavement markings damaged during cleaning and joint repair operations were repaired and refreshed. Airfield traffic control was provided as necessary during repair operations.
• Repair Various Sidewalks. GCE removed and replaced existing concrete, curbing, and asphalt at 20 new ADA-compliant ramp locations. GCE replaced displaced concrete sidewalk sections and interior concrete flatwork as needed. New sidewalks were constructed at locations specified by the contract documents. Additionally, two new under-sidewalk drains were installed at the new sidewalk location for Building 408 to provide proper drainage for existing roof drains. Topographic survey was provided for the establishment of existing and new grades. Traffic control was provided, and construction was staged to maintain adequate facility access during construction.