Water Quality Devices
Counter Flow Technology (CFT) water quality unit, is a cost-effective and eco-friendly structural BMP designed to meet the permit requirements of the NPDES Phase II program by treating the “first flush” of a given storm event. Lane’s CFT provides a mechanism to intercept stormwater flow, remove pollutants, and re-introduce treated flow in a manner suitable for today’s stormwater regulators. Lane’s CFT is manufactured from high-quality corrugated HDPE pipe and has no mechanical, moving or replacement parts, is less costly, more reliable and offers better efficiency then comparable products.
By incorporating weir and dividing plates into Lane’s larger diameter corrugated HDPE pipes the CFT attains the efficiency of larger more costly units by re-directing and lengthening the flow travel path to achieve slower velocities and increased settling times. A final chamber removes hydrocarbons and floatable debris before allowing flow back into the storm drainage system.
CMP Sand Filter
- Lane’s CMP sand filter provides a mechanism to intercept stormwater flow, remove pollutants, and discharge treated flow in a manner suitable for today’s stormwater regulators.
- Depending on grade limitations, a circular or arched-pipe shape may be used. With the benefit of today’s premium coatings CMP sand filters have the added value of meeting the most stringent durability requirements.
- Lane’s CMP sand filter is a three-chamber system consisting of a sediment chamber, a sand bed filter and a clear well. The filter bed is 12 to 24 inches deep and may have a protective screen of gravel or permeable geotextile to limit clogging. The filter bed includes an underdrain that discharges filtered runoff into a third chamber.
- The underground sand filter is a non-proprietary device with EPA recognized pollutant removal efficiencies. Being verified in practice before testing protocols came to the fore, the underground sand filter has an EPA recommended design procedure and is recognized in all stormwater quality manuals.