Remediation Cost Estimator Calculator
Estimate contaminated site cleanup costs by contaminant type, remediation method, soil volume, depth, and groundwater impact.
About this calculator
This calculator estimates cleanup costs for a contaminated site by first converting your contaminated area and depth into a soil volume in cubic yards (area × depth ÷ 27, the standard cubic-feet-to-cubic-yards conversion), then pricing that volume against a per-cubic-yard rate that depends entirely on remediation method — $150/CY for excavation and off-site disposal, as low as $45/CY for soil vapor extraction, up to $250/CY for thermal desorption. That base rate is then adjusted by two multipliers: a contaminant complexity factor (1.0x for well-understood petroleum, up to 1.6x for mixed contaminants or PFAS, which are harder to characterize and dispose of), and a depth multiplier that steps up from 1.0x at shallow depths to 1.6x beyond 30 feet, reflecting the added difficulty of excavating or treating deep contamination. Site investigation cost is calculated separately as a base fee plus scaling terms for area and depth.
If groundwater is impacted, the calculator adds monitoring wells (at least 3, scaling with area), quarterly monitoring costs, and a groundwater treatment cost proportional to the contaminated volume — a substantial cost driver, since groundwater cases also add a flat 12 months to the timeline on top of the method's own baseline duration (as fast as 3 months for excavation, up to 24 months for pump-and-treat). Waste disposal is only charged for the excavation method, since other methods treat contamination in place rather than hauling it away. Because unit costs, multipliers, and timelines here are industry-typical benchmarks derived from EPA Superfund cost data rather than site-specific bids, use this for early budget screening, not for a remedial action cost estimate you'd submit to a regulator.
Inputs
Results
Total remediation cost ($)
$449,181.00
≈ 11 Teslas
How to Use This Calculator
- Enter Contaminated Area (sq ft) and Depth of Contamination (ft).
- Select Contaminant Type (petroleum, chlorinated solvents, metals, PCBs, etc.).
- Choose Remediation Method (excavation, pump-and-treat, in-situ chemical, bioremediation, etc.).
- Toggle Groundwater Impacted to add groundwater treatment costs.
- Review Total Remediation Cost and Soil Treatment Cost to develop a remedial action cost estimate.
How the result changes with Contaminated area (sq ft)
| Contaminated area (sq ft) | Total remediation cost ($) |
|---|---|
| 2,500 | $237,491.00 |
| 3,750 | $342,936.00 |
| 7,500 | $660,872.00 |
| 12,500 | $1,085,054.00 |
What each input means
- Contaminated area (sq ft)
- Estimated lateral extent of soil contamination in square feet.
- Depth of contamination (ft)
- Vertical depth of contamination below ground surface.
- Contaminant type
- 0 = Petroleum/UST, 1 = Chlorinated solvents, 2 = Metals, 3 = Pesticides, 4 = Mixed/PFAS.
- Remediation method
- 0 = Excavation, 1 = Bioremediation, 2 = SVE, 3 = Pump & treat, 4 = ISCO, 5 = Thermal.
- Groundwater impacted (0/1)
- Set to 1 if contamination has reached groundwater.
What each result means
- Total remediation cost ($)
- Complete estimated cleanup cost including investigation and monitoring.
- Soil treatment cost ($)
- Direct cost of treating/removing contaminated soil.
- Investigation cost ($)
- Site characterization, sampling, and lab analysis.
- Groundwater treatment cost ($)
- Monitoring wells, sampling, and groundwater treatment.
- Contaminated soil volume (CY)
- Cubic yards of impacted soil.
- Monitoring wells needed
- Number of groundwater monitoring wells.
- Estimated timeline (months)
- Expected duration from start to closure.
- Cost per sq ft ($)
- Total cost normalized by contaminated area.
How this is calculated
Worked example, using the default values
- Identify Input Parameters4 parametersContaminated area (sq ft) = 5000, Depth of contamination (ft) = 10, Contaminant type = 0, Remediation method = 0 = 5 input(s) provided
- Calculate Total remediation costTotal remediation cost = soilRemediationCost + investigationCost + totalGWCost +449181 = $449,181
- Calculate Soil treatment costSoil treatment cost = soilVolumeCY * unitCost * contMult * depthMult319444 = $319,444
- Calculate Investigation costInvestigation cost = 15000 + contaminatedAreaSqFt * 0.5 + depthFt * 20019500 = $19,500
Engine last updated . Checked against 3 independently-derived tests — how we verify calculators. Built by Paul Gunder, a software engineer, not a licensed financial, medical, or legal professional.
Frequently Asked Questions
How is contaminated soil volume converted into a cost?
The calculator multiplies contaminated area (sq ft) by depth (ft) to get cubic feet, divides by 27 (a cubic yard's volume in cubic feet) to get cubic yards, then multiplies that volume by a per-cubic-yard rate that depends entirely on your chosen remediation method — from $45/CY for soil vapor extraction up to $250/CY for thermal desorption.
Why does contamination depth affect cost through a multiplier instead of just changing the volume?
Depth already scales the soil volume directly — deeper contamination means more cubic yards — but the calculator applies a separate depth multiplier on top of that, from 1.0x at 5 ft or less up to 1.6x beyond 30 ft. Excavating or treating contamination at greater depths is disproportionately harder per cubic yard, needing more shoring, dewatering, or specialized equipment, not just proportionally more material moved.
Why does groundwater impact add 12 months to the timeline regardless of remediation method?
Groundwater monitoring wells require a minimum monitoring period, quarterly sampling to confirm contaminant trends over time, that runs independently of how fast the soil-side remediation technology works. The calculator adds a flat 12-month groundwater monitoring period on top of the method's own baseline duration — even a fast 3-month excavation job becomes a 15+ month project once groundwater is impacted.
Why is waste disposal cost only charged for the excavation method?
Excavation and off-site disposal is the only method modeled here that physically removes contaminated soil from the site, so it's the only one that incurs a per-cubic-yard disposal cost. The other methods — bioremediation, SVE, pump & treat, ISCO, thermal — all treat contamination in place, so no material needs to be hauled away.
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