Maintaining "End-of-Pipe"
Stormwater Compliance

Simple in Design, Easy to Maintain

This is the last step before your stormwater goes off your facility and into the storm drain. Our Blue Filter Gabions (BFG) are design to be your last defensive against non-compliance. Especially for heavy metals like zinc, copper and lead.

We have two different styles of BFG to offer our clients depending on where their "end-of-pipe" is located. Our BFG are like Lego bricks so they can be shaped in any sized based upon your stormwater needs.

BFG Underground Vaults
Too many times where the "end-of-pipe" is located on your property, it also has a lot of production traffic near or on it. By placing the BFG in an underground vault, we can save the facility time and money. It allows space of your heavy equipment to flow over the BFG, and not effecting your production traffic or cycle. Easy to maintain, the vault works quietly filtering your stormwater before it goes off your property and into the storm drain.

vault pictures

Open Detention Ponds
By placing the BFG in front of the storm drain, it forces the stormwater to flow through the BFG. It is an effective and efficient way of filtering stormwater for those facilities that have extra real estate in front of the storm drain. The BFG creates a barrier for trash and other solids (including fish) so you will be compliant for all contaminates.

in pond

The media Gullywasher uses is called BioChar with a percentage of Vulcanized Peet. This combination of organic media consumes heavy metals, oils and some bacteria like eColi. Our sustainable media usually lasts for two years before replacing media. At that time, we vacuum out the old media and replace it. The old media makes a great soil amendment nutrient or can be thrown into solid trash.

  • BioChar is the most robust, organic metal removals media.

  • Vulcanized peat moss is extremely cost efficient when used as a polishing media for residual metals.

  • Activated carbon is used as a polishing media for organic chemical.

  • Sustainable media lasts for two years before replacing

  • Designed for no maintenance.

bfg on locationOur Blue Filter Gabions do not require power, chemicals, active labor, or open checkbooks to be environmentally compliant. Engineered to be green – our BFG use sustainable, local, organic sources for the media blends.

  • Engineered to Be Green
    Our Blue Filter Gabions use sustainable, local, organic sources for media blends with no power or chemical requirements. The local labor force can easily monitor and maintain our Blue Filter Gabions.

  • Passive Filter Bags That Work Under Pressure
    We specially size our engineered filter bags to provide the first barrier for the stormwater to flow through. The suspended solids of which generates turbidity, nutrients, and metals will be caught of the outside of our filters – making it easy for their periodic removal.

  • Pre-Treated Gravel to Provide Stability and Flow Patterns
    This gravel allows for the flow patterns within the medias to flow evenly through the gabions. The gravel weight provides structural stability during high storm flows.

  • A Simple Design That is Flexible to the Environment
    Our Blue Filter Gabions can be easily designed into a wide variety of site restrictions. They can be exposed to sunlight, placed into a underground vault, built into hillsides or shorelines...

  • Easy Media Replacement
    Simply open the gabion tops, uncover the media, and vac truck the media that is needed to be replaced. Rebed with new Gullywasher media and close up the gabions. There is no need for a specialized crew to travel to your site.

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Gullywasher
National Sales
858/922.9001 jed@gullywasher.com
Technical Engineering

206/799.3296
jeff@gullywasher.com

What is brilliant is that our BRG strip out the industrial contaminates, but also slightly leaks dissolved organic carbon (DOM) into the water column on a continual basis. DOM has been researched as a key environmental benefit in masking the bioavailability and reducing the toxic acuity of copper to aquatic species, such as salmon, trout, and steelhead. So while eliminating the toxic contaminants out of the industrial stormwater by letting nature take care of it; the BFG also releases a camouflage that hides the fish/insects from the toxic contaminates for other river sources.

1 2
Vault design with only one catch basin being active and protected by the BFG. The other 5 have been closed off.
The vault design using the vault wall to completely seal the catch basin from untreated stormwater.
3 4
Hydraulic compost filter dam for a paper mill with the salmon ponding on the Willamette River 40’ away.
6
The gabions in the front picture in a completed form.
8
Curved tanks walls do not cause an application problem for using BFG.
The gabions also work in natural environments.

See Output at Almost 300 gpm

Gullywasher
National Sales
858/922.9001 jed@gullywasher.com
Technical Engineering

206/799.3296
jeff@gullywasher.com


Find out about our other Storm Water Management and Erosion Control Products:

inserts
biofilter
erosion
biochar

Request For Quotation
BFG Sizing
Client Information (* = required field)

*Company:

Address:

City:

State:

Zip:

Consultant:

*Company Contact:

*Phone Number:

*Email Address:

Stormwater Contaminate Concerns
Suspended
Solids:
Limit (ppb):
Oils/Greases:
Limit (ppb):
Zinc:
Limit (ppb):
Copper:
Limit (ppb):
Iron:
Limit (ppb):
Nutrients:
Limit (ppb):
Other: Limit (ppb):

What is the maximum design flow rate required for treatment?

What type of BFG process is preferred for your application?

What is the maximum hydraulic gradient available at the detention pond where the BFG will be sited from the ground up?

Is there any significant clarification area available in front of where the BFG will be sited?

Yes | No

What type of configuration is required by the site constraints?

Is there a flat space available in the detention pond?

Yes | No

What will be the base onto which the BFG will be placed?

Will there be solid apron in front of and in back of the BFG for pressure washing on to during maintenance?

Does the end user have maintenance personnel available for pressure washing or rebedding the BFG, when needed?

Yes | No



OTHER USES:
Click image for larger view

oil and water separator

underground vault

detention pond

construction site

industrial rain garden


SIZING CHART

Model

BFG
Clarification
Flow Rate*
Vault Size
Size
Volume
Filtration
2 gpm/ft2
Length
Width
Depth
333MC575P
3' x 3' x 3'
Piped
6' 2" x 3'
18 ft3
27 ft2
54
575
7' 3"
4' 11"
5' 2"
6' x 6' x 6'
Piped
18' 2" x 6'
108 ft3
118 ft2
240
712
13' 2"
8' 2"
8' 10"
6' x 3' x 6'
Piped
36' 2" x 6'
216 ft3
72 ft2
144
712
13' 2"
8' 2"
8' 10"
6' x 6' x 6'
Flush
42' 2" x 6'
270 ft3
118 ft2
240
712
13' 2"
8' 2"
8' 10"
636MC810P
6' x 3' x 6'
Piped
24' 2" x 7'
168 ft3
72 ft2
144
810
11' 0"
9' 0"
9' 2"
666MC810F
6' x 6' x 6'
Flush
28' 2" x 7'
196 ft3
118 ft2
240
810
11' 0"
9' 0"
9' 2"
666MC814P
6' x 6' x 6'
Piped
40' 2" x 7'
280 ft3
118 ft2
240
814
15' 0"
9' 0"
9' 2"
696MC814F
6' x 9' x 6'
Flush
40' 2" x 7'
280 ft3
144 ft2
288
814
15' 0"
9' 0"
9' 2"
696MC816P
6' x 9' x 6'
Piped
44' 2" x 7'
308 ft3
144 ft2
288
816
19' 0"
9' 0"
9' 2"
6126MC816F
6' x 12' x 6'
Flush
44' 2 x 7'
308 ft3
180 ft2
360
816
19' 0"
9' 0"
9' 2"

* Design Flow Rate to either 25 year storm event, if there is no local/state guidance.
Note: The accumulation of suspended solids on the engineered filter bag will reduce porosity, therefore reducing flow rate.