Former Manufacturing Facility—Southeast Michigan

A pilot study was conducted to provide information on the effectiveness of the design parameters for full-scale treatment. Pilot studies allow for the field application design to be modified or changed, if needed, before full-scale implementation.

Full scale operations took place in May of 2011 over a four-day period. Injection utilized 179 Direct Push Technology (DPT) points advanced to a target interval of 2 to 12 ft bgs covering approximately 12,000 ft2. Each injection point received approximately 170 gallons of 12% calcium polysulfide treatment chemistry with a total of 30,478 gallons during full scale operations.

The Challenge

The site required strategic planning:

• 12,000 ft² treatment area
• Multiple depth intervals (2-12 ft bgs)
• Need for design validation
• Large-scale implementation requirements
• Complex distribution needs
• Optimization requirements

The Solution: Two-Phase Implementation

The team executed a strategic approach:

1. Pilot Study Phase:
   • Design parameter testing
   • Field application validation
   • Implementation optimization
   • Methodology refinement
   • Success criteria establishment
2. Full-Scale Implementation:
   • 179 DPT injection points
   • 4-day operation period
   • 170 gallons per point
   • 12% calcium polysulfide solution
   • Total volume: 30,478 gallons

Strategic Implementation

Key operational elements included:

• Systematic point placement
• Precise depth targeting
• Consistent solution strength
• Comprehensive coverage
• Rapid deployment

Technical Specifications

Treatment details:

• Depth Range: 2-12 feet below ground
• Coverage: 12,000 ft²
• Point Spacing: Optimized from pilot
• Solution Strength: 12% calcium polysulfide
• Volume per Point: 170 gallons

Key Success Factors

Several elements contributed to project success:

1. Comprehensive pilot testing
2. Strategic point placement
3. Optimal chemical concentration
4. Efficient deployment schedule
5. Quality control measures

Innovation Highlights

The project demonstrated several advantages:

• Pilot-optimized approach
• Large-scale capability
• Rapid implementation
• Effective distribution
• Validated methodology

Practical Applications

This success provides solutions for:

• Large-scale metals treatment
• Manufacturing site remediation
• Design optimization
• Implementation efficiency
• Quality control protocols

This case study shows how thorough pilot testing can lead to successful full-scale implementation of metals remediation.