Full site preparation is just a phone call away. Alleviate the stress of finding multiple excavation, utility and demolition companies by calling Bayer Construction Co. Inc. All your site preparation needs will be fulfilled with precision. GPS controlled equipment ensures high-tech accuracy.. Equipment Rental or Contract. Roads & Commercial Site Preparation,Parking Lot Construction,Sewer & Water Line Construction,Crushed Rock,Grading,Building Demolition. Surfacing Materials,Rip-Rap,Filter Rock,Topsoil. 6 Locations.