Geotech PRC, Installation And Operation Manual

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Section 1: System Description
Function and Theory
The Geotech Product Recovery Canister (PRC) is a passive, skimmer device designed to
recover light floating hydrocarbons (such as gasoline and diesel fuel) from the ground
w
ater in wells that are 2” (5cm) and larger.
Featuring a floating oleophilic/hydrophobic intake assembly, the skimmer can
automatically collect and skim floating product down to a sheen.
Standard 2” skimmers
provide 12” (30cm) of intake travel and standard 4” skimmers provide up to 16” (40cm) of
intake travel, to accommodate water fluctuations. The unit is suspended in the well at the
desired recovery depth by supplied stainless steel suspension cable.
System Components
A PRC consists of two (2) major components; a product skimmer assembly and a
collection canister (as shown in Figures 1-1 through 1-3).
On the 4” model, the skimmer
assembly is protected by a slotted screen that pre-filters the incoming product and
protects the intake assembly from damage. The skimmer assembly collects free product
and passes it through a coiled hose to the collection canister. Recovered product is
evacuated by removing the PRC from the well and opening the drain on the bottom of the
device.
Increased capacity collection canisters are available and easily installed by simply
unscrewing the collection canister section and replacing it with a larger collection canister
and weight assembly. When going from smaller to larger collection canisters,
consideration must be made for weight. Going from larger to smaller is not a problem.