Phase I ESAs in Riverside County

The Partner Corona office provides Phase I Environmental Site Assessments, Phase II Environmental testing, Property Condition Assessments, and Asbestos Surveys in support of commercial real estate transactions. Partner Corona staff are familiar with the blend of suburbs and past agricultural use that make Riverside County unique.

Partner is the national leader in Phase I Environmental Site Assessments by volume. Most reports are performed to meet the standards of ASTM E1527-05. Partner often customizes reports to meet individual client or agency lender’s (Fannie MaeFreddie Mac) requirements.

Those that do commercial or multifamily transactions in Riverside County truly understand the importance of accurate Probable Maximum Loss Reports (PMLs). Understanding the local geology and correctly reflecting the math in a PML report is most important to those that purchase or lend on commercial or multifamily property in Riverside County.

Partner performs Phase II Environmental Testing either in support of a financing decision or to meet the requirements of the Riverside County Department of Environmental Health. Most of our reports are performed to meet the standards set by ASTM E1903-27(2002). Partner Corona staff understands the local geology of the Peninsular Ranges, as well as regulatory agencies such as the Santa Ana Regional Water Quality Control Board.

Some recent projects and experience that provide insight into our robust Southern California consulting practice include:

Property Condition Assessments, 45 site portfolio in Southern California

Partner performed Property Condition Assessments on 45 office buildings mostly in Los Angeles, Long Beach, Riverside, and San Bernardino. Our PCAs were done in support of acquisitions and were all completed within two weeks.

Environmental Due Diligence on 330 Gas Stations in Southern California

Partner performed environmental due diligence on 330 gas stations located in the six large Southern California Counties: Los Angeles, Ventura, Orange, San Bernardino, and Riverside. The gas stations had a lot of subsurface data and over 100 open cases. Partner reduced a large amount of data and quantified the portfolio’s environmental liability for our client.


For more information on Partner’s Riverside County Practice, visit


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