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The Isolator° Row <br /> Introduction <br /> An important component of any Stormwater Pollution Prevention <br /> Plan is inspection and maintenance.The StormTech Isolator Row is a <br /> technique to inexpensively enhance Total Suspended Solids (TSS) and <br /> Total Phosphorus (TP) removal with easy access for inspection and <br /> maintenance. <br /> The Isolator Row <br /> The Isolator Row is a row of StormTech chambers, either SC-160, SC- <br /> 310, SC-310-3, SC-740, DC-780, MC-3500 or MC-7200 models, that is <br /> surrounded with filter fabric and connected to a closely located <br /> manhole for easy access.The fabric-wrapped chambers provide for <br /> sediment settling and filtration as stormwater rises in the Isolator Looking down the Isolator Row <br /> Row and passes through the filter fabric.The open bottom chambers from the manhole opening,woven <br /> and perforated sidewalls (SC-310, SC-310-3 and SC-740 models) allow geotextile Fabric is shown between <br /> stormwater to flow both vertically and horizontally out of the chambers. the chamber and stone base. <br /> Sediments are captured in the Isolator Row protecting the adjacent <br /> stone and chambers storage areas from sediment accumulation. ������ ' - <br /> ADS geotextile fabric is placed between the stone and the Isolator Row <br /> chambers. The woven geotextile provides a media for stormwater ; • <br /> filtration, a durable surface for maintenance, prevents scour of the ! " <br /> underlying stone and remains intact during high pressure jetting.A <br /> non-woven fabric is placed over the chambers to provide a filter media <br /> for flows passing through the chamber's sidewall.The non-woven <br /> fabric is not required over the SC-160, DC-780, MC-3500 or MC-7200 <br /> models as these chambers do not have perforated side walls. <br /> The Isolator Row is designed to capture the "first flush" runoff and <br /> offers the versatility to be sized on a volume basis or a flow-rate basis. <br /> An upstream manhole provides access to the Isolator Row and includes <br /> a high/low concept such that stormwater flow rates or volumes that <br /> exceed the capacity of the Isolator Row bypass through a manifold to StormTech Isolator Row with <br /> the other chambers.This is achieved with an elevated bypass manifold Overflow Spillway(not to scale) <br /> or a high-flow weir.This creates a differential between the Isolator <br /> Row row of chambers and the manifold to the rest of the system, thus _OPTIONAL <br /> allowing for settlement time in the Isolator Row. After Stormwater PRE-TREATMENT <br /> flows through the Isolator Row and into the rest of the chamber system <br /> STORMTECH <br /> it is either exfiltrated into the soils below or passed at a controlled rate 4 ISOLATOR ROW <br /> through an outlet manifold and outlet control structure. <br /> agneentswirm <br /> The Isolator Row may be part of a treatment train system.The MA"WIITH =���11w®I <br /> treatment train design and pretreatment device selection by the OVERFLOW =-- ;--�� <br /> WEIR <br /> design engineer is often driven by regulatory requirements. Whether <br /> pretreatment is used or not, StormTech recommend using the Isolator ;--11, <br /> Row to minimize maintenance requirements and maintenance costs. ;--�� <br /> ECCENTRIC J <br /> HEADER <br /> Note: See the StormTech Design Manual for detailed information on _ <br /> designing inlets for a StormTech system, including the Isolator Row. 1111111M. <br /> 1111111111t' <br /> OPTIONAL_ <br /> ACCESS <br /> ACONSSSTORMTECH CHAMBERS <br />