Phase 1 Environmental Site Assessment in Washington
Compare quotes from environmental professionals who write ASTM E1527-21 Phase 1 ESA reports in Washington. Most reports are delivered in two to three weeks, and rush options are available.
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What Is a Phase 1 Environmental Site Assessment?
A Phase 1 Environmental Site Assessment, written as Phase I ESA in most reports, is a records review and site inspection that looks for signs a property has been contaminated by hazardous substances or petroleum. The consultant follows ASTM Standard E1527-21. Nobody drills or samples anything during a Phase 1.
The work covers historical aerial photos, fire insurance maps, city directories, regulatory database searches, a walk of the property, and interviews with the owner, the occupants, and anyone else who knows the site's history. The report ends with a finding of whether any Recognized Environmental Conditions exist.
Lenders ask for a Phase 1 before they fund a commercial purchase or refinance. SBA 7(a) and 504 loans require environmental due diligence on most real estate collateral. Buyers order one on their own because a Phase 1 completed before closing is what qualifies them for the innocent landowner and bona fide prospective purchaser defenses under CERCLA.
What a Phase 1 ESA Reviews in Washington
The state records for a Washington Phase 1 come from Washington State Department of Ecology, searched alongside the federal databases every Phase 1 covers.
Washington cleans up contaminated property under the Model Toxics Control Act, and the Department of Ecology keeps every site under that law in a searchable database. Two regional issues shape a Phase 1 here more than the databases do. Across much of King and Pierce counties the Tacoma smelter deposited arsenic and lead for decades, and Ecology publishes a map of that plume. In the orchard country of Yakima, Wenatchee, and the Columbia Basin, lead arsenate pesticide use before 1950 left residue on land that is now being subdivided.
The Washington lists a consultant checks for a property in Washington:
- Confirmed and Suspected Contaminated Sites List. Every site Ecology has confirmed or suspects is contaminated under the Model Toxics Control Act.
- Hazardous Sites List. Ranked sites that have been assessed and require cleanup.
- Underground storage tank and leaking tank databases. Registered tanks and reported petroleum releases.
- Voluntary Cleanup Program records. Sites enrolled in the program and No Further Action letters issued after independent cleanups.
- Tacoma Smelter Plume map. Ecology's map of areas in the Puget Sound region where smelter emissions raised arsenic and lead in soil.
- Former orchard land maps. Areas in Central Washington where historic orchards and lead arsenate use are documented.
Common Sources of Contamination on Washington Properties
Timber and wood products dominated the state's early industry, and sawmills, wood treating plants, and pulp mills on the waterfronts of Seattle, Tacoma, Everett, and Bellingham left creosote, pentachlorophenol, and dioxins in soil and sediment. Boeing and its suppliers brought solvents and chromium to the Duwamish valley and Renton. The Puget Sound waterways themselves are Superfund sediment sites, and property near the Duwamish or Commencement Bay can carry allocation exposure. East of the mountains, agriculture and the orchard legacy replace industry as the main concern. Gas stations and dry cleaners are the routine findings statewide.
Who Orders a Phase 1 ESA in Washington
- Buyers of commercial and industrial property doing due diligence before closing
- Borrowers on SBA 504 and SBA 7(a) loans secured by real estate
- Banks and credit unions underwriting commercial mortgages
- Developers acquiring land or buildings for redevelopment
- Attorneys handling purchase agreements and lease negotiations
- Owners refinancing a commercial building
- Investors buying retail, warehouse, office, or multifamily sites
Washington Cleanup Programs and Buyer Liability Protection
The Voluntary Cleanup Program lets an owner clean a site independently and ask Ecology for a No Further Action opinion, which is the document most lenders want to see. Prospective purchaser consent decrees are available for larger redevelopment sites. Ecology's Brownfields program funds assessment through integrated planning grants, and the Toxics Cleanup Program publishes model remedies for common situations like petroleum releases and dry cleaner solvents so smaller cleanups can move faster.
How Much Does a Phase 1 ESA Cost in Washington?
Across the country a Phase 1 ESA runs from $1,500 to $6,000, and a plain commercial building on a single parcel lands near the low end of that range. Washington pricing runs above the national middle, driven by Seattle labor costs and the extra work of evaluating the smelter plume and waterfront sediment issues.
What moves the price on a given property:
| Factor | Effect on price |
|---|---|
| Acreage and number of parcels | More ground to walk and more addresses to research |
| Current use | Industrial, automotive, and dry cleaning sites take longer to document |
| Historical use | A former gas station or manufacturing plant means more agency files to pull |
| Turnaround | A rush report in five to ten business days adds a premium |
| Age of the property | Older sites have more historical sources to review |
| Lender scope | Some banks and the SBA add deliverables beyond the ASTM standard |
A quote tied to the actual address is the only way to know the number for your property. Read the Phase 1 ESA cost guide for a closer look at pricing.
Phase 2 Environmental Site Assessment in Washington
When a Phase 1 finds a Recognized Environmental Condition, the next step is a Phase 2 ESA. A Phase 2 puts soil borings, groundwater monitoring wells, or soil vapor probes in the ground and sends the samples to a lab. The scope depends on what the Phase 1 found, so a Phase 2 in Washington can cost anywhere from a few thousand dollars for a handful of borings to well above $30,000 for a site with a plume.
The consultants in our network handle both phases. Ask for a Phase 2 quote when you submit your details, or read the Phase 2 ESA guide and the Phase 2 cost guide first.
Phase 1 ESA Questions From Washington Buyers
How long does a Phase 1 ESA take in Washington?
A standard Phase 1 ESA typically takes 2-4 weeks from start to delivery of the final report. Rush turnaround options are available, often within 5-10 business days, for an additional fee.
Who needs a Phase 1 Environmental Site Assessment?
Buyers, lenders, developers, and investors involved in commercial real estate transactions. SBA 7(a) and 504 loans typically require environmental due diligence, including a Phase 1 ESA. Banks and lenders typically require one for commercial property financing. It's also recommended when purchasing former industrial or commercial properties.
Do SBA loans require a Phase 1 ESA in Washington?
SBA 7(a) and 504 loans typically require environmental due diligence for commercial property purchases, which usually includes a Phase 1 ESA. The report must comply with ASTM E1527-21 and be completed by a qualified environmental professional. Requirements can vary based on the property type, historical use, and lender policy.
What ASTM standard governs Phase 1 ESAs?
ASTM E1527-21 is the current standard for Phase 1 Environmental Site Assessments. It replaced E1527-13 and defines the scope, methodology, and reporting requirements. Compliance with this standard is necessary to qualify for the CERCLA innocent landowner defense.
Does a Phase 1 ESA include soil or groundwater testing?
No. A Phase 1 ESA is a non-invasive review of records, regulatory databases, historical sources, and a visual site inspection. It does not include physical sampling. If potential contamination is identified, a Phase 2 ESA with soil borings or groundwater monitoring may be recommended.
What happens if the report finds a Recognized Environmental Condition?
If the Phase 1 ESA identifies recognized environmental conditions (RECs), the next step is typically a Phase 2 ESA, which involves actual sampling and laboratory analysis of soil, groundwater, or air to confirm the presence and extent of contamination.
Can a Phase 1 ESA protect buyers from environmental liability?
Yes. A Phase 1 ESA conducted under ASTM E1527-21 helps establish the "innocent landowner" defense under CERCLA. This can protect buyers from liability for pre-existing contamination they were not aware of at the time of purchase.
What's the difference between Phase 1 and Phase 2 ESAs?
A Phase 1 ESA is a non-invasive investigation that reviews records and inspects the site visually. A Phase 2 ESA involves physical sampling (soil borings, groundwater monitoring wells, etc.) and laboratory analysis. Phase 2 is only needed when Phase 1 identifies potential contamination concerns.
Is a Phase 1 ESA required before buying commercial property in Washington?
While not legally mandated for all purchases, most lenders, banks, and SBA lenders typically require a Phase 1 ESA before financing commercial real estate in Washington. It is strongly recommended for any commercial, industrial, or redevelopment transaction to identify potential environmental liabilities.
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