Colleton County School
District selected a site for construction of a new 1300
student elementary school. This site was remote and had no
off-site wastewater disposal options.
Based on a preliminary soils reconnaissance by SCDHEC, the
preferred wastewater solution of conventional septic tanks
with gravity drain fields was rejected by SCDHEC. The
District was required to look at a more advanced, more
costly alternative.
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Conducted a detailed
soils investigation of the site.
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Found adequate areas
of suitable soils for septic tank effluent (STE) disposal.
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Performed a
preliminary engineering evaluation and cost analysis to
confirm the feasibility of a treatment, pumping and
disposal system on the proposed site.
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Convinced SCDHEC that
site is indeed suitable for disposal.
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Designed a septic tank
effluent pumping (STEP) system consisting of a septic tank
for solids and grease removal, filtration units, and pumps
to distribute the effluent to three gravity drain field
areas.
The Preliminary
Engineering Report was approved and the project was
permitted by SCDHEC Bureau of Environmental Health. Cost
savings to client were approximately $500,000.
