CONCRETE PIPE Stormceptor and LEED Certified Projects (continued) The following are the assumptions used when sizing treatment system for the given site: • In order to capture as much of the particulate phase of phosphorous as possible, a particle size distribution that addresses silt sized particles will be used. This targets the widest range of particles addressed. As the specific surface area of finer particles is much greater than coarser particles, the capacity for phosphorous adherence is much greater as particle diameter decreases. This strategy is comprised of one Stormceptor unit removing 80% of Total Suspended Solids. Did You Know? In addition to the LEED credits available as the result of Stormceptor’s stormwater management benefits, the concrete materials used in Stormceptor production contain recycled content that can contribute to a project’s overall goals. Through the links provided at www.lafargenorthamerica. com/pipe, a LEED calculator is provided for all of Lafarge’s precast concrete pipe and drainage structures, including manhole and Stormceptor components. Here, the fly ash and steel contained within Lafarge precast concrete materials is separated out to provide an overall recycled content weight. TSS Removal Demonstrated by: • PCSWMM for Stormceptor sizing reports • Stormceptor ETV Verification Phosphourous Removal Demonstrated by: • Phosphorous removal performance claim (available upon request) • Sediment bound phosphorous technical paper (available upon request) Oil & Grease Removal Demonstrated by: • Oil & Grease removal performance claim (available upon request). This document demonstrates the oil and grease removal of Stormceptor units across three different field and lab studies. The performance claim is separated in two different modes of removal: Spill capture and oil removal. Under oil removal conditions the Stormceptor system is demonstrated to achieve a 15 mg/L effluent concentration. Under spill capture conditions the Stormceptor system is demonstrated to remove greater than 97% of the spill volume. PAGE 30 LAFARGE PIPE eMANUAL