DGSI. Durham Geo Slope Indicator

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Skimmer Selection Table

Viscosity

80 SSU or Less

Higher than 80 SSU

Depth from bottom of well to product /water interface

24" or more

18" or more

18" or more

6"

Water Table Fluctuation

< 36"

< 24"

<30"

<24"

Well Diameter

2" or more

2" or more

4" or more

2"

Part Number

TR-517

TR-51711

TR-70410

TR-702

Skimmer Type

Standard
36" Travel

Standard
24" Travel

High
Viscosity

Density

Fluids under 80 SSU are gasoline, jet fuels, and most diesel fuels.

Passive systems are used when the layer of product is thin or the geology of the site restricts the recharge rate of the well.

Related items:

Product/Water Interface Probe