(1) Vendor needs to provide gravel landscaping service to the government authority located in Centreville, VA. – Remove the top 4” of topsoil. – The agency pm shall coordinate between the contractor and facility– Staff on a spoil storage area. – Laydown weed barrier in both zones. Contractor shall use a geotextile material as the weed barrier. – The geotextile layer shall be whole and free of tears and other openings. – All new stone materials shall meet agency #57 stone standards. – New stone shall be layered over the site area in both zones, as shown on the attached map.