LASN is a photographically oriented, professional journal featuring topics of concern and state-of-the-art projects designed or influenced by registered Landscape Architects.
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(Continued from page 16) h a rd s c a p e s Top, Left The aggregate system is layered with four inches of three-quarter inch washed and cleaned stone, then three-inch stone, and finally a two-inch setting bed of 3/8- inch paved chips. The filtration system is expected to capture eight pounds of nitrogen, 1.5 pounds of phosphorous, four pounds of metal, and 125 pounds of soil and minerals per year, keeping them out of the lake. Top, Right Paving installation machines from Aqua-Paving Construction can reportedly lay more than 1,000 square feet of pavers per hour. The three-acre parking lot was fully repaved in about 130 hours. Left When the installation was complete, Kimberling City fire authorities demonstrated the permeable paver system by showering the parking lot with a fire hose as spectators looked on. The permeable pavers will help keep the lake water clean for years to come. 18 Landscape Architect and Specifier News feet of pavers per hour at Kimberling City Center. AquaPaving compacted the paver surface with a 7,000-pound plate compactor and swept chips into the openings between the pavers that will allow the water into the system. The aggregate system includes three-inch stone under four inches of three-quarter stone that has been washed and cleaned; the washed rock helps water pass through the aggregate, removes contaminants and returns the clean water to the groundwater. AquaPaver Construction then laid a two-inch setting bed of 3/8-inch paved chips and laid the pavers on top of that. "A permeable paver system ensures less contaminants enter the water than when water washes off an asphalt parking lot, and the water enters the lake at a cooler temperature," said Dave Farrero, field superintendent with Aqua-Paving. Stormwater runoff from asphalt enters streams and lakes at elevated temperatures, which can be harmful to aquatic life. By using a PICP system that accepts runoff down into the stormwater system and discharges it into the lake at a reduced temperature, Kimberling City Center's owners took action to ensure the lake retains its pristine appearance. "We plan to utilize this highly visible location to not only help protect water quality and improve the overall appearance of the community center, but also as a demonstration site for other local businesses and municipalities to learn from," said Borchelt. The paver design included Belgard Hardscapes' Aqualine L in both Gascony tan and red, complemented by Belgard's Holland in the same shades in the crosswalks and soldier course around curbs, islands and bioswales. "It's just gorgeous," said Morrill. "One of the best things about the new parking lot is the mental attitude – how proud we are to have done something that no one else around here has done."