A Phase I Environmental Site Assessments is an integral part of any commercial property real estate transaction. The Phase I Environmental site assessment report provides an analysis of a property’s past and current uses and outlines any environmental site conditions that may pose a liability for the current property owner or prospective purchaser.

Anyone who plans to buy or sell commercial real estate should obtain a Phase I Environmental Site Assessments. Such environmental inspections are an important requirement to protect prospective purchasers from environmental liability. The Phase I Environmental Site Assessment will analyze the risks associated with a property and identify any potential environmental cleanup needed on and around the property. Getting an accurate environmental Site Assessment report is essential to protect both the owner and the investor/prospective purchaser.

Our Phase I Environmental Site Assessment is completed by experienced staff and all are directed by environmental site professionals with a minimum of 10-year’s experience. Our projects are very cost-effective because we are a small employee-owned company and we do not have the large overhead and expenses of a large company. We have the available staff and experience to complete multi-site portfolios with very short due dates. We take pride in the fact that we can provide quality Phase 1 ESA reports for less cost than our competition.

RSB Environmental is the national leader in Phase I Environmental Site Assessments by volume. Most reports are performed to meet the standards of ASTM E1527-13. RSB Environmental often customizes reports to meet individual client or agency lenders’ (Fannie Mae, Freddie Mac) requirements while taking the widely varying geology and topography of the state into consideration.

Phase 1 Environmental Site Assessment Scope:

The Phase I ESA involves a review of records, a site inspection, and interviews with owners, occupants, neighbors, and local government officials. While sampling and laboratory analysis are not always included in this phase, they should still be conducted by an environmental professional trained in the appropriate standards.

The review of government records and interviews may take a considerable amount of time. To ensure a quality assessment, it is important to plan ahead and ensure sufficient time has been allocated for the process.

Contamination can result from activities that took place on the site. Contamination could also come from activities at a nearby property. The records and interviews will be the best sources to provide this information. Public records are available regarding the locations of properties that have been classified as contaminated by federal or state regulations. Depending on their proximity to your site, contamination could have made its way to your site.

Site Visit

Historical Research

Geology and Hydrogeology

Regulatory Research

Interviews and Document Review

Our Service Areas

RSB has conducted Phase 1 Environmental Site Assessment projects nationwide. Locally RSB has completed numerous projects in California. Please feel free to call us at 1-800-304-6517 or email at to get a site specific price for your property.


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