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Pond Liner Installation Guidelines

 
PRINTABLE COPY OF THE HDPE ALLOY INSTALLATION GUIDE CLICK HERE 20 PAGES [PDF READER REQUIRED]

BASIC UNCRATING AND POSITIONING OF LINER SYSTEMS

These instructions are meant to be used as general guidelines for the installation of liners.  Other conditions may apply depending on the size of the liner.  These instructions should be used in conjunction with any additional installation instructions provided.

A deployment area must be designated for each site and sufficient access for crate positioning and an area along the side of the pond area for the liner.  Normally roadways are used if sufficiently prepared to prevent liner damage.  A recommended width for the deployment area is 20-30 feet.

GeoCHEM liners are shipped in either large cardboard boxes or wooden crates depending on the size of the liner.  Smaller liners will be accordion folded, then rolled and placed into cardboard boxes.  Larger panels are accordion folded and then accordion folded into wooden crates.  Instructions should be attached to the shipping container on how your liner has been folded.  Information should also be provided on how to remove and install your liner.  The information is similar to what is being presented here.

ROLLED LINERS IN CARDBOARD BOXES

Smaller liners or tarps are packaged to allow them to be unrolled at the pond site.  As a general rule, cut flat sheets 15,000 square feet and below are accordion folded and then rolled (See Drawing #2).  Sheet sizes larger than 15,000 are accordion folded in both directions.  Rolled liners are packaged and shipped in cardboard boxes.  The roll material is tipped on its end to fit into the cardboard box, therefore the rolled liner must be turned and positioned correctly at the site for deployment.  Package size is approx. 4' x 4' x 5' - 6" high weight about 1100 - 1200 lbs.

The liner package should be positioned at one corner of the deployment area.  To determine how the package should be positioned and in which direction to turn the liner, the top should be removed.  Once these factors have been determined and the crate positioned, the sides of the box should be opened.  The cardboard sides can remain in place to protect the liner from any sharp edges on the crate.  The liner should be rotated and oriented so that the end of the liner faces the deployment end of the pond (See Drawing #4) The liner can then be unrolled along the side of the pond.  Section V addresses the actual placement of the liner material.

ACCORDION FOLDED LINERS IN CRATES

Large liners are required to be shipped in wooden crates to protect the liner during shipment and also provide a workable package for moving the liner around the work site and to the final pond site.  The crates are built of standard construction lumber.  The leading edge of the liner should be pulled from the crate.  On some occasions the leading edge has been folded under the top fold or flap.  To expose the leading edge, the top flap should be folded forward starting at the rear of the crate.  Several personnel may be required to perform this task.  NOTE:  Only personnel wearing soft soled shoes should be allowed to work on the liner to protect against damage.   Approximately 20' of material should be removed from the crate.  If the liner will be pulled along the long side of the pond with a piece of equipment, a nylon sling should be wrapped around the liner bundle about 10' from the end and attached to the equipment.  Chain or cable should not be used on the liner for pulling.  The liner can then be slowly pulled from the crate.  Personnel should continually watch the deployment area for sharp rocks or other debris which may damage the liner as it is being deployed.  Once the liner is totally removed from the crate the sling can be removed (See Drawing #6).

If the second method is selected, the leading edge of the liner is removed from the crate and secured.  The crate is then pulled backwards.  One method that may be utilized is to support eh rear of the crate with the bucket of a front end loader.  A chain can be tied from the top of the bucket around the lower edge of the frond of the crate and then back to the top of the bucket.  The chain should be snug to insure the crate does not slip off the bucket during liner deployment.  Again with this method, personnel should watch the area where the liner is being placed to insure no rocks are being exposed by the equipment or the crate.  Once the liner is fully removed, the crate can be removed from the site.

POSITIONING THE LINER

The liner should not be pulled too tight.  Wrinkles or folds will not affect the performance of the liner.  The liner will stretch in warm or hot weather and contract in cool or cold weather.  The lined area should be walked after deployment to insure that the liner is lying flat in all areas.  Sandbags should be spread out across the exposed area to protect against wind damage.  At this point the perimeter of the liner should be temporarily secured.  If the liner is allowed to contract overnight or if water is placed in the pond, these activities will help seat the liner.  The edge of the liner can now be anchored or secured in the anchor trench or totally secured with backfill or other ballast materials. Now you're ready to introduce liquid into your pond/lagoon. 

 
PRINTABLE COPY OF THE HDPE ALLOY INSTALLATION GUIDE CLICK HERE 20 PAGES [PDF READER REQUIRED]

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