5900 36TH AVE W PRE APP 015 - 032 - SOUNDVIEW BUSINESS CAMPUS - VERITAS O&M Manual 2025-04-17

I 1 .0 The Isolator° Row I I 1.1 INTRODUCTION The Isolator Row is typically designed to capture the An important component of any Stormwater Pollution "first flush" and offers the versatility to be sized on a vol- Prevention Plan is inspection and maintenance. The ume basis or flow rate basis. An upstream manhole not StormTech Isolator Row is a patented technique to only provides access to the Isolator Row but typically inexpensively enhance Total Suspended Solids (TSS) includes a high flow weir such that storm water flowrates removal and provide easy access for inspection and or volumes that exceed the capacity of the Isolator Row maintenance. overtop the over flow weir and discharge through a manifold to the other chambers. Frt 17 The Isolator Row may also be part of a treatment train. :� ..---, ., -, .. ., .... ..., ........4\-. t By treating storm water prior to entry into the chamber I / �l \ system, the service life can be extended and pollutants such as hydrocarbons can be captured. Pre-treatment best management practices can be as simple as deep I / . , 7/ sump catch basins, oil water separators or can be inno- • vative storm water treatment devices. The design of the treatment train and selection of pretreatment devices by the design engineer is often driven by regulatory I requirements. Whether pretreatment is used or not, the Isolator Row is recommended by StormTech as an effective means to minimize maintenance requirements and maintenance costs. I Note:See the Storm Tech Design Manual for detailed Looking down the Isolator Row from the manhole opening, woven information on designing inlets for a Storm Tech system, 1 geotextile is shown between the chamber and stone base. including the Isolator Row. 1.2 THE ISOLATOR ROW StormTech Isolator Row with Overflow Spillway The Isolator Row is a row of StormTech chambers, either (not to scale) I SC-310, SC-310-3, SC-740, DC-780, MC-3500 or MC- D OPTIONAL 4500 models, that is surrounded with filter fabric and con- / PRE-TREATMENT nected to a closely located manhole for easy access. The I fabric-wrapped chambers provide for settling and filtra- tion of sediment as storm water rises in the Isolator RowH ISOLATOR I ROW ROW and ultimately passes through the filter fabric. The open -- bottom chambers and perforated sidewalls(SC-310, SC- 0 }} { I 310-3 and SC-740 models)allow storm water to flow both i_ I �� vertically and horizontally out of the chambers. MANHOLE- -FTTT I 1 Sediments are captured in the Isolator Row protectingWITH I p OVERFLOW the storage areas of the adjacent stone and chambers WEIR from sediment accumulation. r+ ) Two different fabrics are used for the Isolator Row. A 1111I J� woven geotextile fabric is placed between the stone and the Isolator Row chambers. The toughgeotextile ECCENTRIC 4.g HEADER provides a media for storm water filtration and provides — r a durable surface for maintenance operations. It is also - I designed to prevent scour of the underlying stone and '0 remain intact during high pressure jetting. A non-woven r fabric is placed over the chambers to provide a filter media for flows passing through the perforations in the 4 1 sidewall of the chamber. The non-woven fabric is not required over the DC-780, MC-3500 or MC-4500 models OPTIONAL O STORMTECH CHAMBERS ACCESS as these chambers do not have perforated side walls. 1 2 Call StormTech at 888.892.2694 or visit our website at www.stormtech.com for technical and product information. I