| The
extreme, bone-chilling temperatures in Alaska are some of the most
demanding conditions possible for a primary containment liner. That's
why the Lowell Point Wastewater Treatment Plant in Seward, Alaska,
depends on XR-5® geomembrane material produced by Seaman
Corporation.
The
250,000 square-foot aerated sewage lagoon was lined with XR-5 in 1991
after a failure of the liner system necessitated a complete redesign.
CH2M Hill, the project consulting engineer, specified the Seaman Style
8130 XR-5 geomembrane because of its high strength, low thermal
expansion/contraction, chemical resistance, and suitability of exposed
application. Furthermore, due to prefabrication of large panels in the
shop prior to construction, the primary installation took only three
days and required minimal field seaming. In an environment where the
weather can change quickly, this was imperative.
As
can be expected in Alaska, the XR-5 liner is exposed to extreme
environmental conditions and constantly fluctuating temperatures. This
geomembrane is rugged, strong, and durable enough to withstand the
frigid low temperatures and ice build-up as well as the UV radiation and
thermal change.
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