Clearwell baffles are manufactured to comply with the requirements of NSF/ANSI Standard 61:
Drinking Water System Components. Geomembrane baffle curtains are manufactured from ENV-3004-20: 30 Mil Polyester Reinforced Ethylene Interpolymer Alloy. HDPE, Type 304 and Type 316 stainless steel baffle support hardware is available. 

Yes, the tank will have to be drained to install the baffles.

Answer: Environetics manufactures the baffles but we seldom provide installation services. Local
installation contractors are significantly less expensive due to the high cost of remote mobilization. If installation certification is required by the contract then a certified Installation Technician can review the installation, but this service is usually unnecessary because the installation procedure is simple. The cost for a certified Installation Technician is $2,000 for the first day and $1,000 for each additional dayon the same trip. Environetics can also certify the installation by reviewing photos of the installation.

Seaman Corporation's XR-3PW is the highest-strength and most chemically resistant
geomembrane on the market. The 30 Mil Polyester Reinforced Ethylene Interpolymer Alloy is
manufactured to comply with the requirements of NSF/ANSI Standard 61: Drinking Water System
Components. We have been using XR-3PW in clearwell applications since 1992 and we have yet to
receive a request for replacement baffle panels. Seaman Corporation offers a 10 year Pro-Rated
material warranty. Environetics provides a 2 year material and workmanship warranty on the baffle
system.

Clearwell baffles are designed to divert flow, they are static have no moving parts.
Maintenance is not required, however care must be taken to avoid damaging the baffle material.

The baffles are not damaged by freezing. Seaman Corporation XR-3PW passes the ASTM D2136
low temperature resistance test at -30 degrees Fahrenheit.

The definition of chafing is to wear or abrade by rubbing. Chafing strips are not required
because the baffle is clamped continuously against the surface, therefore wear and abrasion by rubbingis not possible.

Clearwell baffles are continuous self-supporting curtains that do not require intermediate
support. We suggest placing the baffle curtains 6 inches away from the columns and 3 inches away from column capitals to simplify installation. Additional hardware and a significant amount of additional labor is required to install baffles between columns. Although we all have a natural tendency to “connect the dots”, it is much better to avoid column rows when designing clearwell baffles.

The proposed baffle plan showing the baffles installed between columns is a costly option without any performance benefits. Baffles installed between columns require a significant amount of additional hardware and additional labor to install.  The baffles are self-supporting so the preferred baffle plan avoids column rows. This configuration reduces the product and installation costs while increasing the flexibility of the design. We suggest placing the baffle curtains 6 inches away from the columns and 3 inches away from column capitals to reduce cost and simplify installation.

Cable supported baffle systems are more cost effective than baffles attached to the ceiling with
angle and batten. The cable supported system can be used if you have some space between the high water level and the ceiling. The top of the baffle is typically installed a minimum of 3 inches above high water level. Then you ca use either a cable supported design or a quick link supported design for the top of the baffle. Either of these designs will save significant labor and material costs over the angle and batten design.

The baffle panels for this project will be delivered roughly 2-inches larger than the dimensions.
Each baffle panel will include 3-inch 2-layer hems around the perimeter. The baffle panels will extend beyond the stainless steel batten that secures the baffle to the concrete.

The field dimensions should be precise to one inch. The baffles that fit between the columns should be measured on all sides, and they may require diagonal measurements to confirm the
“squareness” of the opening.

A simple tool is used to punch the anchor bolt through the baffle material. Contractors
typically use a piece of pipe or conduit 3/4-inches in diameter by 6-inches long. Simply push on the
baffle to find the anchor, then place the pipe over the anchor and tap it with a hammer. This will punch a round hole through the hem of the baffle panel in the exact location of each anchor.