SAM Transaction Screening Program

The Hazardous Materials Investigation, Site Assessment, and Mitigation Procedures on This Page Apply to Internal County of San Diego Property Transactions Only

General Information

On many County projects it is necessary for the County to acquire a fee interest, or easement of real property.  If the property to be acquired contains hazardous materials, the County may be subject to substantial financial liability for mitigation and cleanup.

The discovery of hazardous materials on a project late in the design phase or during construction may completely change the scope of the proposed work and established budget.

In order to effectively budget and allocate limited resources for County projects, it is important to establish the probability of finding hazardous materials within or near the boundaries of a County project as early as possible in the Project Development phase. 

The Transaction Screening Program applies to all County projects involving the acquisition of real property including donations or gifts of real property.  All County projects involving the acquisition of real property are required to enter the Transaction Screen Program to establish the probability of finding hazardous materials.

Administrative Policy, Environmental Standards, and Forms

 San Diego County Administrative Policies:


Environmental Standards:

ASTM Standards

  • ASTM Standard E 1528 - 00: Transaction Screen Process
  • ASTM Standard E 1527 - 00: Phase I Environmental Site Assessment Process
  • ASTM Standard E 1903 (2002): Phase II Environmental Site Assessment Process

SAM Environmental Policy

  • SAM Manual for Environmental Site Assessment Investigation

Additional Information Related to Property Redevelopment:

Other Links:

SAM Staff:

Department of Environmental Health and Quality (DEHQ)
Site Assessment and Mitigation Program (SAM)
5500 Overland Avenue, San Diego, CA 92123
P.O. Box 129261, San Diego, CA 92112-9261

Supervisor - Colleen Hines - 858-505-6874

Hydrogeologist - Ewan Moffat - 858-505-6856

Case Manager - Jon Senaha - 858-505-6798

SAM Duty Desk