Full service and re-lamp. To bring the levels back up again. This installation had not been serviced since it had been installed, 10 yrs ago. Servicing is a must. We ALWAYS use heavy duty mats to go across the surface. Puts the college concerns at rest. Had to use a cherry picker to access 3 columns because of obstructions, and 3 columns we could lower with our Hydraulic Ram. Sports Lighting doing what they do best.