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New HampshireRegulatory Agency: NH DES (New Hampshire Department of Environmental Services)

New Hampshire Oil Tank Removal: DES Requirements

New Hampshire relies heavily on heating oil, making buried tank management an important issue. The NH DES Petroleum Remediation Section oversees tank closures and cleanups. Southern New Hampshire communities near the Massachusetts border have particularly high concentrations of older homes with underground tanks.

šŸ“‘ In This Guide

NH DES Tank Program

New Hampshire regulates underground tanks through DES: ā€¢ **Registration** - Certain tanks require registration ā€¢ **Closure requirements** - Proper procedures required ā€¢ **Soil sampling** - Required during removal ā€¢ **Cleanup standards** - NH Env-Or 600 standards ā€¢ **Petroleum Remediation** - DES section handles contamination ā€¢ **Documentation** - Closure reports required

Southern NH Focus

Southern New Hampshire has many buried tanks: ā€¢ **Nashua/Manchester** - Urban areas with older homes ā€¢ **Salem/Londonderry** - Suburban communities ā€¢ **Seacoast** - Portsmouth area homes ā€¢ **Real estate** - Tank issues common in transactions ā€¢ **Border communities** - Some MA contractors serve NH

NH Removal Process

New Hampshire tank removal process: 1. **Qualified contractor** - NH-experienced company 2. **Local permits** - As required by municipality 3. **DES notification** - If required 4. **Tank removal** - Proper procedures 5. **Soil sampling** - Per DES guidance 6. **Lab analysis** - Certified laboratory 7. **Compare to standards** - NH cleanup criteria 8. **Remediation** - If contamination found 9. **Documentation** - Complete closure report 10. **File with DES** - As required

Cleanup Standards

NH contamination cleanup follows Env-Or 600: ā€¢ **Soil standards** - Residential cleanup criteria ā€¢ **Groundwater protection** - Priority in NH ā€¢ **Risk-based options** - Available in some cases ā€¢ **DES oversight** - For significant contamination ā€¢ **Closure requirements** - Documentation needed

šŸ’° Typical New Hampshire Costs

ServicePrice Range
Tank Sweep$250 - $450
Standard Tank Removal$1,500 - $3,000
Removal with Contamination$3,500 - $12,000
Major Remediation$12,000 - $40,000+

* Prices vary by location, contractor, and site conditions. Get multiple quotes.

šŸ’” Pro Tips for New Hampshire Homeowners

  • āœ“Southern NH has highest concentration of buried tanks
  • āœ“Some MA contractors also serve southern NH
  • āœ“Keep closure documentation
  • āœ“Report releases to DES
  • āœ“Groundwater protection is priority
  • āœ“Get tank sweep for older NH homes

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