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superfund site groundwater treatment plant

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6,000 Environmental Remediations Since 1975

Remtech © 2017




PROBLEM


Remtech Engineers was engaged by the corporate environmental engineering department of a Fortune 100 Energy Corporation to design a groundwater treatment

plant for leachate generated from a chemical waste landfill at an Alabama Superfund site to operate under flood conditions.



SOLUTION


A waste impoundment was closed by constructing an engineered storage facility. Bentonite slurry walls were constructed and solidification agents were introduced to

stabilize wastes. Gas vents, and a High Density Polyethylene Liner was installed to prevent surface water infiltration. A cap was constructed over the landfill.


An estimated three-foot water depth frequently covered the site due to the Corps of Engineers altering spillway elevations at dams located up and downstream. PVC

extraction wells were installed in the cap and drilled inside and outside of the slurry wall to intercept and treat leachates from the landfill and direct clean upgradient

groundwater around the storage facility.


Submersible pumps were placed in the bottom of each well to produce extraction rates of 50 gpm. North and south galleries were connected to control panels to facilitate operation of single or multiple pumps. The collection gallery initially drained into an existing onsite concrete retention basin.


Remtech evaluated alternative functional designs and prepared detailed plans, specifications, material takeoffs, and contract/bid documents in a 60-day period. This plant was constructed 8-months later. Remtech Engineers also trained plant operations personnel.


COST/BENEFITS


Unit operation carbon and stainless steel tanks, quartz lighting, and safety railing were salvaged from the client’s onsite abandoned phenoxy plant. An existing concrete retention basin was used as a foundation and secondary containment structure for the plant. Unique Remtech plant design features including floating weirs, saved the client over $110,000 thousand dollars.

Petrochemical Site Prior to Closure

Petrochemical Site Prior to Closure

Remtech LeachateTreatment System

Remtech LeachateTreatment System

Remtech Extended Aeration Treatment System

Remtech Extended Aeration Treatment System

Superfund Groundwater Treatment Plant PID

Superfund Groundwater Treatment Plant PID

Location: CentralAlabama

Client: Major Oil Company

Contract Amount: $170,000

Superfund Site Groundwater Environmental Remediation Facility Designed to Operate under Flood Conditions

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Copyright Remtech Engineers, 2017

Remtech EngineersTM

200 Cobb Parkway North

Suite 208

Marietta, Georgia 30062

Phone: 770-427-7766 or 800-377-3648

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