Your Vision. Delivered.
BMP SOLUTION
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ABT Inc’s TrenchFormer FirstFlush® system is a cast-in-place stormwater channel that is designed specifically for sites under 100 acres where specific pollutants – oils, greases, and other hydrocarbons – must be captured without impeding bypass flow particularly during the first fifteen minutes of a rainfall or “first flush” effect.
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Cast-in-place forming systems allow for greater flexibility for all your heavy-duty and high-volume applications including highways, airports, and anywhere you need quick and efficient drainage. FirstFlush® technology is perfect for sites that lack the necessary area for retention ponds and larger structures.
POLLUTION PROBLEM SOLVER
STORMWATER FILTRATION
FILTRATION MEDIA
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FirstFlush®â€¯is the perfect solution when seeking a best management practice (BMP) that must handle sheet flow, control vectors, collect debris, treat bacteria, and capture hydrocarbons – all on the same site.  The ABT FirstFlush® cast-in-place stormwater channels utilize a variety of filtration media and fabrics.
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Standard Filtration “Blankets”
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Antimicrobial Filtration Media
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Hydrocarbon Media
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HMR – Heavy Metals Removal Media
1640FF PRODUCT DATA – FIRSTFLUSH STORMWATER FILTRATION SYSTEMS
The FirstFlush 1640FF, our largest capacity design, uses ABT’s patented forming technology to create a highly durable concrete component. As effluent enters either through an inlet pipe or a trench drain, the first chamber captures solid debris. After passing through the sediment screen, effluent passes through two removable smart sponge filter panels before exiting. The pre-sloped bottom eliminates ponding, an excellent feature where vector control is an issue. The 1640FF is provided with solid covers.
Description
Dims (in.)
Debri Volume (cu. ft)
Bypass Flow Area (in-sq) Debris Chamber
Bypass Flow Area (in-sq) Filter Chamber #1
Bypass Flow Area (in-sq) Filter Chamber #1
Detail Sheet:
1640FF24-4
4′ Long
24 x 48 x 48
9.4
46.8
165.8
-NA-
Spec Sheet:
Detail Sheet:
1640FF24-6
6′ Long
48″ Depth
24 x 48 x 72
15.5
46.8
146.6
-NA-
Spec Sheet:
Detail Sheet:
1640FF24-6H
6′ Long
30″ Depth
24 x 30 x 72
9.5
42.5
146.6
-NA-
Spec Sheet:
Detail Sheet:
1640FF24-8
8′ Long
48″ Depth
24 x 48 x96
19.2
44.6
129.6
163.6
Spec Sheet:
Detail Sheet:
1640FF24-8H
8′ Long
30″ Depth
24 x 30 x 96
11.85
42.5
142.4
153.0
Spec Sheet: