SI’s are completed to determine whether or not a site warrants further Superfund action. During the SI, FDEP evaluates the extent to which a site presents a threat to human health or the environment, through the collection and analysis of environmental samples to determine whether hazardous substances are present at the site. The SI consists of file review, historical records review, site reconnaissance, target survey, work plan preparation, field sampling, data interpretation, draft HRS score development, and report preparation.

SIs will be conducted in conjunction with EPA’s SESD or by utilizing Department contractors. For projects in which contractor services will be used, the contractor will be responsible for completing health and safety plans, work plans, sample collection and, SI reports. For SIs conducted with a combination of EPA’s SESD and Department staff, SESD will assist the Department with sampling and laboratory analyses. SI-HRS scores will be completed by department staff. The laboratory analyses for samples will primarily be completed by EPA Contract Laboratory Program support services and EPA’s Region 4 SESD as necessary, however FDEP may utilize the FDEP’s Bureau of Laboratories if necessary.

An average of 25 samples will be collected per site. When appropriate, the Department will utilize innovative technologies including direct push drilling, soil screening equipment, and other EPA-approved sampling equipment and screening techniques to help control cost and reduce the number of samples required at each site.

The FDEP, in some cases, may complete desktop SIs for sites that do not require sampling because sufficient site specific, analytical data is available in the site file to complete the evaluation and SI-HRS score sheets.