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4,000 Environmental Remediations Since 1988

Remtech © 2017

Transformer Explosion Closeup

7,000 Gallons of Transformer Oil Released
Excavation of Mineral Oil Saturated Soil Above Grounding Grid
Substation Restored Detention Basin
Substation Explosion and Mineral Oil Release


Location: Northeastern Georgia

Client: Major Power Transmission Company

Contract Amount: $113,000


PROBLEM


7,000 gallons of mineral oil were released when a 230 KV

transformer exploded at a power substation. Mineral oil

migrated off the substation pad, through a rock filled detention

pond and down a heavily vegetated drainage ditch that ended

up in a depressed area 550 feet from the transformer pad (on

the power line ROW). The impact area was determined to be

10,400 square feet by performing a GPS survey.


SOLUTION


350-gallons of oil were recovered using Remtech’s all-terrain

vacuum tankers inside the substation’s fenced downgradient

section. Recovered oil was transported to a recycling facility.

The concrete transformer pad and power line footings were

cleaned with HC-2000 enhanced bioremediation accelerant/

cleaner and pressure washed with water.


Oil saturated soils were excavated from: the transformer area

inside the fence above grounding grids, access road, rock

filled detention pond, and drainage ditch. 280-tons of

contaminated soils transported to a Subtitle D Landfill facility

as a special waste.


The State of Georgia approved soil treatment of contaminated

soil in and beneath the grounding grid and downgradient

residual runoff soils with three (3) applications of Remtech’s

bioremediation accelerator HC-2000 without performance

sampling based on successful degradation sampling on

previous projects.


Remtech designed and constructed a new detention pond with

an oil recovery cell employing an inground API separator and

entrance and discharge hydraulic energy dissipators. The site

was landscaped with soil stabilization systems consisting of

gravel inside the fence, riprap, geotechnical fabric, and

wetlands mix seed germination netting outside the fence.


COST/BENEFITS


The insitu treatment of 0.23 acres of the mineral oil

contaminated soils in and beneath the substation’s grounding

grid and spill runoff area with HC-2000 rather than excavation

saved the client an estimated $100,000 and minimized

extended power outages that would have been associated with

removal and replacement of the substation’s grounding grid.

Substation Explosion and Mineral Oil Release

7,000 Gallons of Transformer Oil Released

Excavation of Mineral Oil Saturated Soil Above Grounding Grid

Restored Detention Basin

Restored Substation Following Treatment of Soils in and Beneath Grounding Grid with HC-2000

Restored Substation Following Treatment of Soils in and Beneath Grounding Grid with HC-2000

HC-2000 Bioremediation of Mineral Oil Release from Transformer Explosion at Electrical Substation

Web Inquiries: 770-427-7766 Extension 4

Fax: 770-427-7001

Email: webmaster@remtech-eng.com

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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