Home / Services / Environmental / Los Angeles County, CA
Los Angeles County, California
Environmental Services in Los Angeles County, CA
Environmental site assessments and construction-phase environmental support that keep transactions and projects moving without surprises. Los Angeles County is covered on a project basis through our Los Angeles, CA regional hub.
- Dispatched from
- Los Angeles, CA regional hub · project-based staffing
- Lead time
- Scheduled by phone or proposal; lead time confirmed when the scope is set
- Laboratory
- Sugar Land, TX laboratory under chain of custody, or a mobile laboratory for large projects
- Reporting
- Reviewed and issued under a documented quality system; formatted for owner, engineer, and building-official review
- Serving
- Los Angeles County, CA — Los Angeles, San Diego, San Jose
- Coverage
- California statewide · 27 regional hubs
- Technicians
- ACI- and NICET-certified field staff; licensed professionals in California
- Call us
- (346) 420-5425
Scope
Environmental services in Los Angeles County
- Phase I Environmental Site Assessments for acquisitions and refinancing
- Phase II subsurface sampling when a Phase I identifies recognized environmental conditions
- Construction stormwater support: SWPPP compliance inspections
- Soil management screening for export and import of fill material
Full scope, standards list, and pricing basis: Environmental Services.
Local conditions
Environmental conditions in Los Angeles County
Development in Los Angeles County moves through one of the most regulated environmental frameworks in the country. California's overlay of state CEQA requirements on top of federal environmental review, combined with the county's industrial legacy in communities from Vernon to the South Bay, means environmental liabilities can surface at any stage of a transaction or construction project. Active grading on hillside sites can expose historically disturbed soils, while shallow groundwater in low-lying coastal and valley areas raises the stakes for subsurface investigation. Our environmental services team provides Phase I and Phase II environmental site assessments, soil and groundwater sampling, and construction-phase environmental support coordinated through our Los Angeles regional dispatch hub. Reports are prepared to ASTM E1527-21 standards and structured to satisfy lender, agency, and due-diligence requirements. The laboratory operates under a documented quality system, and field personnel hold current professional certifications. Whether you are closing a commercial transaction or managing a remediation-adjacent construction site, we keep the environmental work on schedule with your project.
Los Angeles County's varied geology — ranging from expansive alluvial soils in the San Fernando and San Gabriel Valleys to fill-over-bay-mud conditions near the coast — can complicate subsurface investigation planning and affect how soil and groundwater samples are collected and interpreted. The county's Mediterranean climate means grading and sampling windows are generally reliable year-round, but the wet season from roughly November through March can affect site access and should be factored into project scheduling.
FAQ · Los Angeles County
Does CEQA require environmental site assessment work beyond the standard ASTM Phase I scope?
CEQA review and an ASTM E1527-21 Phase I ESA serve different purposes and are not interchangeable. A Phase I addresses recognized environmental conditions tied to hazardous substances. CEQA may additionally require biological, cultural, air quality, or hazardous materials assessments depending on project type. We scope our work to satisfy the ASTM standard and coordinate timing with your CEQA consultant so deliverables align with your entitlement schedule.
Our site is near a former dry cleaner or light-industrial corridor in Los Angeles County. What subsurface concerns should we expect?
Chlorinated solvents such as PCE and TCE from dry-cleaning operations and related light-industrial uses are among the most common recognized environmental conditions identified in Los Angeles County Phase I reports. If a Phase II is triggered, soil and groundwater sampling follows ASTM E1903-19 protocols. Shallow groundwater depth in valley and coastal areas can accelerate contaminant migration and may expand the sampling scope.
We are performing mass grading on a hillside site. What construction-phase environmental monitoring or soil management support do you provide?
We provide construction-phase support including soil classification observation, sampling for waste characterization, and documentation to satisfy Los Angeles County grading permit and regulatory requirements. Where a Soil Management Plan or Health and Safety Plan is already in place, our field staff work within that framework. Sampling and documentation follow applicable ASTM and California Department of Toxic Substances Control guidance.
Which office covers environmental in Los Angeles County, CA?
Field work in Los Angeles County is dispatched through the Los Angeles, CA regional hub. Laboratory testing is performed in Sugar Land, TX under chain of custody, or in a mobile laboratory mobilized to large Los Angeles County projects.
Are the technicians you send to Los Angeles County certified?
Field sampling and testing in Los Angeles County are performed by our ACI- and NICET-certified technicians. Environmental engineering and professional services are delivered with professionals licensed in California, coordinated under one proposal.
Scheduling & proposals
Need environmental services in Los Angeles County?
Call to schedule a technician, or send project documents for a written proposal.