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Stormwater and Sediment Control Storm Drain Filter

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Carthage Mills
4243 Hunt Road
Cincinnati, OH 45242


800-543-4430 (Toll Free)




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Carthage Storm Drain Sediment Trap - GrateKeeper

arrow bulletFUNCTIONS

The GrateKeeper is an integral part of Best Management Practice (BMP) designed to perform at least one of the following functions on jobsites:

  • Trap sediment and debris entering catch basins
  • Prevent clogging of catch basins
  • As a primary or secondary sediment control device
  • Last the life of the project


Carthage Mills’ GrateKeeper provides superior sediment control, with hassle free installation, and simple removal when necessary. This professional strength efficient inlet filter is fabricated with only the most durable and efficient materials available, and if properly maintained can be reused for the life of the project or longer.

GrateKeeper inlet/catch basin filter bags are an important part of standard Best Management Practices (BMPs) that should always be implemented to reduce surface water pollution from construction stormwater runoff.

The GrateKeeper is available in either Regular Flow or Ultra-High Flow (300 g/min/ft2) and with an optional curb foam deflector to prevent sediment and debris from entering through curb openings.

arrow bulletINSTALLATION

  1. Remove grate from storm drain.
  2. Using rebar in two opposing rebar pockets, insert the GrateKeeper into the catch basin. Replace the inlet grate leaving as much of each rebar pocket above the grate as possible. (See photo below) Note: If the GrateKeeper is firmly secured in the catch basin the rebar can then be removed for later use.
  3. If the storm drain is not surrounded by concrete, the rebar pockets can then be buried using adjacent soil.


Routine inspection of collected sediment level is critical to prevent product malfunction. The following steps should be taken regularly to ensure proper efficiency:

  1. Thoroughly inspect each GrateKeeper after any major rain event. Inspect the GrateKeeper every 2-3 weeks if no rain event takes place.
  2. The fill/expansion strap should be visible at all times. If debris and/or sediment reach or exceed the fill strap, you need to refer to the Removal & Cleaning steps below.

arrow bulletREMOVAL & CLEANING

  1. IMPORTANT: Reinsert the two pieces of rebar into the rebar pockets before removing the grate
  2. Using the rebar, lift the GrateKeeper and take to disposal site
  3. Insert rebar into dumping straps on the bottom. Invert GrateKeeper; empty contents and hose clean if needed; reinstall GrateKeeper into catch basin.


Stormwater Products Overview
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Gratekeeper by Carthage Mills

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