Perimeter Guard is a tested, patented, high performance and low cost system designed to provide effective sediment control on or around home building sites. Perimeter Guard is an important part of a comprehensive best management approach for sediment control. PG allows water flow-through while at the same time provides particle filtering. PG is designed for high traffic environments where vehicular and foot traffic over the BMPs is routine. Perimeter Guard is made from durable and recyclable HDPE.
Perimeter Guard (PG) is placed around the perimeter of home construction sites to filter and slow sediment laden water and prevent movement of soil onto the streets and evenutally offsite. PG is "L" shaped with a rugged jacket. It resists the typical BMP abuse found in vertical home construction by flexing back and forth in traffic. Over 65 diferent trades and 250 individuals work to build a home. Materials and crews generate a lot of traffic across the stormwater BMPs. PG stands up to this abuse and typically 80% can be moved to a future phase to be used again. Total cost to protect lots shrinks from reduced maintenance, material purchases and because PG performs better, street sweeping is significantly reduced.
Perimeter Guard changes the way sediment is controlled on-site for homebuilders. High overhead mechanized crew not required for installation and maintenance. Perimeter maintenance averages less than 6 min per week per lot under construction. When removed by landscapers after final grading, greater than 80% of the material can be stockpiled for reuse. Drastically lower overall costs - one installation with no additional purchases, less maintenance, and significantly less on-site sweeping. There is very high environmental sustainability—nothing goes to landfills.
Home construction is highly unforgiving to Storm Water BMPs due to the high sub-contractor count, length of time between land development and landscaping phases, very high foot and vehicular traffic, trenching around the pads and curbs, installation of sidewalks, driveways, utility posts, and mail pads, etc. During home building, silt fence, fiber rolls (wattles) or fiber blankets are quickly destroyed in foot or vehicular traffic. Slumping wattles or blankets provide no freeboard height to keep flows from reaching the street and storm drains creating the need for constant sweeping. Wattles, blankets or silt fence typically needs to be replaced four to five times during a subdivision build-out. Perimeter Guard can overcome the above concerns, provide better sediment control and an economic advantage for the home builder.