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Right: Rockmolds treated the driveway, main entry, and steeping-stones of this Hawaiian project with individually formed stones of poured 6-inch thick concrete, with 4-inch gaps between each stone. Bottom: They used five gallons of powdered brickform dark grey release gel and formed the large steps using 30-inch concrete stamps. Permeable Hawaii Permeable Hawaii By the Numbers Currently 58 percent of hardscape installation contractors say the niche represents less than 10 percent of their hardscape busi- ness, while 28 percent reported 10-29 percent and eight percent receive more than 50 percent of their business from installing po- rous surfacing. Why Go Permeable? While there is lot of talk of porous surfacing as a "green" tech- nology, the majority of installers view it as a practical storm water management technology. Nearly 73 percent of responded labeled storm water management as the main market force pushing the niche. 47 percent indicated LEED certification as a main driving force. From all indications, the porous surfacing marketplace will continue to see mas-sive growth. Featured Projects DeBest Landscape: Permeable Grade DeBest Landscape of South Haven, Michigan joined forces with Porous Pave to build one of the largest/steepest permeable pathways in the US (see page 20). The challenge was building a pathway down a steep incline along the shores of Lake Michigan. The contractor used Porous Pave to 22 LC DBM solve the issue of creating a durable surfacing that was not slippery, could be applied in steep applications without large equipment, and would not create runoff towards the lake. To ensure an adequate base in the steepest areas of the pathway, DeBest installed a grid system, which was pinned onto the hill, allowing the paving material to lock onto it and preventing any future movement. According to Dave Ouwinga of Porous Pave, Inc., "No other Po- rous material (asphalt, concrete or pavers) could have been installed on such a steep application." It's high recycled rubber content gives it the flexibility to move without cracking, while providing traction, wet or dry, to the homeowners when walking or driving utility vehicles up or down the path. Rockmolds: Permeable Hawaii David Schwartz of RockMolds built this Hawaii driveway for the homeowners who were looking for a classic "lava stone" feel for their paving (see photos above). The project used individually formed and uniquely shaped concrete steps. The contractor poured each large stone one at a time, and then stamped each one, utilizing lava stone stamps from RockMolds. com. "We varied the texture from stone to stone to avoid repetition," said Schwartz. After the stones cured, they acid stained them with a dark brown, then neutralized the acid, and coated them with a water-based sealer.