Rapid Site Remediation Electrical Resistance Heating

Transcription

1 Rapid Site Remediation Electrical Resistance Heating The Alaric Superfund Site with Sonic Drilling Electrode Installation Chris Thomas Mike Scaringella TRS Group GSE, Inc

2 TRS Group Leading the industry 150+ domestic projects Joint ventures: China, Europe & Brazil Culture matters ESOP - a company of owners Change order averse High ethical standards Collaborative approach Behavior Based Culture

3 GSE, Inc. Established in 1991 Woman-Owned Small Business Qualified Professional Staff Strong Record of Performance Drilling, Remediation and Environmental Compliance

4 TRS & GSE Projects Redstone Arsenal (Alabama) 350 electrode installations 6 projects NASA Michoud Assembly Facility (Louisiana) 12 electrode installations Alaric Superfund Site (Florida) 28 electrode installations

5 TRS ERH PROCESS Sand Saturated Zone Groundwater Flow Clay Clay Bedrock

6 TRS ERH PROCESS TRS ERH PROCESS Electricity is directed into the subsurface area. TRS Power Control Unit

7 TRS ERH PROCESS TRS ERH PROCESS Electricity is directed into the subsurface area. TRS ERH PROCESS TRS Power Control Unit

8 Heating Sweet Spot Certainty in difficult matrices Fast 3 to 6 months VOCs in vadose & saturated zones Reduce concentrations by >99% TRS embraces guarantees 100% success Levels the playing field Hydrolysis of chlorinated alkanes

9 Implementation in Residential Neighborhood During After

10 Brownfield Project in Seattle, WA

11 Subsurface Installation Below Grade ERH Areas

12 The Alaric Site, Tampa FL Former Industrial Site PCE (810 ppm soil), TCE and VC Soil and groundwater contamination Treatment area: 6,200 sq ft, volume:14,000 cyd Treatment Interval: 5 to 67 ft, GW at 5ft Deep complex lithology including Chert layer Sonic drilling required Interior below grade installation to allow owner unlimited access during operations.

13 The Alaric Site, Tampa FL

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15 ERH Design 28 Electrodes about 17 ft apart 8 Temperature Monitoring Points 13 TCs in each 5ft apart Design Energy: 2,690,000 kwh Power Control Unit, Vapor Recovery Blower, Steam Condenser and Water Management unit

16 ERH Design Site Layout

17 Installation Using Sonic Drilling What is Sonic Drilling? A mechanically induced vibration, created by an oscillation that repeats itself across a point of equilibrium

18 Installation Using Sonic Drilling Resonant Sonic Drill Head A wave force energy vertically oriented and coupled to tubular drill steel, delivering 50,000 pounds of oscillating force at a frequency of 150 hertz

19 Installation Using Sonic Drilling Soil Fluidization and Liquefaction Stress waves move through the drill pipe inducing the fluidization or friction reduction of the formation by breaking the elastic bonds of the soil Soil with water acts as a liquid lubricating the inside and outside of the casing, rods, and core barrels, sharply reducing resistance to penetration and side-wall skin friction

20 Installation Using Sonic Drilling GSE installed the electrodes and temperature monitoring probes. A total of 2,590 LF of 10-inch diameter borings were installed with sonic resulting in over a 50% reduction in IDW.

21 ERH Operations Operations started: March 17, 2017 Energy Applied: 2,850,000 kwh Average Power: 775 kw Average Recovered Flow Rate: 400 scfm Total Days of Normal Operations: 153 PID Based Mass Removal: 1300 pounds Lab Based Mass Removal: 950 pounds

22 ERH Operations

23 ERH Results (99% reduction)

24 QUESTIONS? Chris Thomas Mike Scaringella TRS Group GSE, Inc