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6,000 Environmental Remediations Since 1975

Remtech © 2017

PROBLEM


Fuel from an underground pipeline at a locomotive intermodal yard leaked into a stormwater and discharged to a stream discharging through a subdivision. Remtech was contracted to: determine the location of the leak; contain, recover, and support leak repair operations; handle stormwater contact water; and contain and recover fuel from the subdivision.


SOLUTION


A 3,500 foot underground cased fuel line leak infiltration point into a stormsewer was located by isolating sections of the stormsewer with 30” expansion plugs, inspecting manholes, conductive metal tracing, CCTV camera inspections, vacuum truck potholing, ground penetrating radar, and tracer gas. Fuel was vacuumed from the line with pigs under pressure and vacuum.


A total of four 20 ft deep test pits were excavated to uncover the pipe. The leaking segment of fuel carrier pipe was located by installing valves at two test pits and pressure testing each section. An estimated 350 ft of new pipe was replaced & welded by a piping contractor and x-rayed and pressure tested by Remtech.


Contaminated soil was excavated and disposed of at a permitted facility. Groundwater recovery wells were installed and the test pits were backfilled with gravel and clean soil.

Over  1 million gallons of stormwater and petroleum contact water were pumped from the test pits and disposed of at the railyard’s onsite treatment plant or at an offsite pretreatment facility. Remtech conducted two-phase vacuum extraction operations and stormsewer cleaning operations.


COST/BENEFITS


1. Cost reduction actions - Rapid location and containment of the fuel release with 30" inflatable plugs and conductive metal detection (more accurate due numerous interferences in an intermodal yard) reduced clean out costs in the downgradient

subdivision and facilitated smart test pit locations to validate the actual leak location.


2. Contaminated stormwater treatment of an estimated 250,000 gallons of with HC-2000 discharged into an abandoned tank farm saved an estimated $50,000.


3. Installing horizontal leg total fluids extraction wells during backfill of test pits was more cost-effective that post backfill installation.

Leaking Fuel Pipeline Investigation, Remediation & Repair
- Stormwater Treated with HC-2000
Stormsewer Fuel Infiltration Point Located with CCTV Camera

Stormsewer Fuel Infiltration Point Located with CCTV Camera

Pipeline located by Potholing and Collection of Overburden in Vac Box

Pipeline located by Potholing and Collection of Overburden in Vac Box

Leaking Fuel Line Located and Uncovered

Leaking Fuel Line Located and Uncovered

Stormwater Management with Frac Tanks, Tankers, Vacuum Boxes and Pumps

Stormwater Management with Frac Tanks, Tankers, Vacuum Boxes and Pumps

Two-Phase Vacuum Extraction at Intermodal Facility removing Residual Diesel Fuel

Two-Phase Vacuum Extraction at Intermodal Facility removing Residual Diesel Fuel

Location: Atlanta, Georgia

Client: Major Railroad

Contract Amount: $543,000+

Leaking Fuel Pipeline Investigation, Remediation & Repair

- Stormwater Treated with HC-2000

Intermodal Diesel Fuel Pipeline Leak Environmental Investigation, Repair, and Remediation

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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