Contain silt, sediment and oil pumped out during dewatering operations
Draining swampy or low-lying areas is a common occurrence in construction. Unfortunately, pumping out the water from these areas also removes a lot of dirt, silt, mud, and debris along with the water. These contaminants can cause problems if they are simply discharged into a storm drain.
Key Features:
- Detains both oil and sediment/silt, offering a combination of benefits not available in alternative dewatering bags.
- Standard and custom sizes available.
- Accommodates up to 4″ discharge hose. Optional hose connector available – makes connecting and disconnecting Dewatering Bags quick and easy.
NOTE: To increase the efficiency of filtration, place the bag on an aggregate or haybale bed to maximize water flow through the surface area of the bag.
Compliance:
- Helps comply with NPDES, 40 CFR 122.26 (1999) and TMDL requirements.
Ultra-Dewatering Bag
| Part # | Dimensions ft. (m) | Capacity cu. ft. (L) | Weight lbs. (kg) |
|---|---|---|---|
| 9729-O/S | 3 x 4 (0.9 x 1.2) | 6 (170) | 2.0 (1.0) |
| 9724-O/S | 6 x 6 (1.8 x 1.8) | 18 (510) | 5.0 (2.5) |
| 9723-O/S | 8 x 8 (2.4 x 2.4) | 32 (906) | 5.0 (2.5) |
| 9725-O/S | 10 x 15 (3.0 x 4.6) | 150 (4,247) | 21.0 (9.5) |
| 9727-O/S | 15 x 15 (4.6 x 4.6) | 225 (6,371) | 30.0 (14.0) |
Options
| Part # | Description | Weight lbs. (kg) |
|---|---|---|
| 9739 | Optional Hose Connector for 4″ hoses | 2.0 (1.0) |



