Pasadena grew fast after the 1900s, with old industrial zones along the railroad corridor leaving behind legacy contaminants. Many properties near the Arroyo Seco or the 210 freeway now need cleanup before redevelopment. Contaminated soil remediation in Pasadena California starts with a site history review and a targeted sampling plan. We map hot spots using field screening tools before any lab work begins. This phased approach avoids wasted effort and keeps costs in check. For sites where heavy machinery can't reach, we combine sampling with a georradar GPR survey to locate buried drums or tanks. Every project follows ASTM D1586 for soil classification and ASTM D2487 for consistent lab identification.
Old industrial corridors in Pasadena often hide contamination below fill layers — a phased sampling plan is the only reliable way to find it.
Service characteristics in Pasadena California
- Initial site walkover and photo documentation
- Hand auger or direct-push sampling to 15 feet
- TOC, pH, metals, and VOC lab analysis
- Risk-based cleanup targets per California DTSC guidelines
Critical ground factors in Pasadena California
In Pasadena we often see old fuel tanks under concrete slabs that nobody remembers. If you start excavation without a proper assessment, you can hit a plume mid-project. That triggers stop-work orders, DTSC involvement, and cost overruns that could have been avoided. Contaminated soil remediation in Pasadena California is not just about digging out dirt — it is about managing liability and keeping your schedule intact. A small investment upfront in soil screening prevents regulatory surprises later.
This service complements our laboratory testing work for a complete project analysis.
Our services
We provide end-to-end support for contaminated sites in Pasadena. From initial screening to final verification, each service is delivered by our accredited lab team.
Phase II Environmental Site Assessment
Intrusive investigation with soil borings, groundwater monitoring wells, and laboratory analysis. We identify contaminants of concern and delineate their extent for regulatory reporting.
Excavation Management and Verification
On-site oversight during soil removal, stockpile sampling, and post-excavation confirmation testing. We document that cleanup goals are met so you can proceed with construction.
Bioremediation and Soil Treatment Design
For sites with petroleum or organic contaminants, we evaluate in-situ treatment options like enhanced biodegradation or chemical oxidation. We design the remedy and monitor performance.
Common questions
How long does contaminated soil remediation in Pasadena California usually take?
Typical timelines range from 4 to 12 weeks for a Phase II assessment plus excavation verification. Larger sites with groundwater issues can take 3 to 6 months. We always give you a realistic schedule after the first site visit.
What contaminants are most common in Pasadena soils?
Historical dry cleaners and auto shops left behind chlorinated solvents (PCE, TCE) and petroleum hydrocarbons. Lead from old paint and battery recycling also appears near older commercial buildings. Our lab tests for the full California DTSC list.
Do I need a remediation plan if I am just doing a residential addition?
If the addition involves excavation near a former industrial use or known contamination, yes. Pasadena building permits often require a soil management plan when records show previous commercial activity on the parcel.
How much does contaminated soil remediation cost in Pasadena California?
Costs vary widely by site size and contaminant type. A typical Phase II assessment runs between $3,530 and $11,350. Full excavation and off-site disposal can go higher. We provide a fixed-price proposal after the initial walkthrough.