County adopts Energy Industrial Park changes, adds environmental safeguards and a limited residential pocket

HILLSBOROUGH COUNTY, Fla. — The Hillsborough County Board of County Commissioners on Thursday adopted multiple text amendments that revise the county’s Energy Industrial Park rules, add environmental testing requirements and create a narrowly defined allowance for residential uses in one portion of the site.

Planning Commission staff described the package as three related privately initiated text amendments that together would allow more flexibility in the Energy Industrial Park while also requiring additional environmental oversight. Melissa Linehard, planning commission staff, told commissioners the proposed amendments would change some geographic language in the EIP rules, allow retail and commercial uses beyond one-half mile of Turkey Creek in portions of the site, and (in the amendment that proposes limited residential uses) require coordination with state and federal environmental agencies, pre-construction radiation sampling, mitigation systems if sampling indicates they are needed, and 1,4-dioxane testing for the area south of the railroad tracks where residential development is proposed.

The measures prompted strong public comment. Neighbors and environmental advocates urged the board to pause approvals until a full environmental suitability analysis of the broader site was completed, citing contamination from historic phosphate mining, concerns about dioxane and other contaminants, elevated radon levels, sinkholes and flooding. Yvette Neiman of the Fix Hillsborough Neighborhood Coalition summarized the public-health concern: "The EPA concluded in its final revised risk determination that 1,4-dioxane poses an unreasonable risk to human health based on cancer and non-cancer risks to workers, and occupational non-users, and cancer risks to the general population from exposure to 1,4-dioxane in drinking water." Jim Davison, who identified himself with local environmental concerns, urged commissioners to defer action until an environmental suitability study demonstrated safety for residential uses.

Applicant representatives and counsel said the site is under federal oversight in areas near the Sydney Mine Sludge Pond Superfund site and that the adopted language strengthens coordination with regulatory agencies. Jake Kramer, counsel for the applicant team, told the board “this site is absolutely overseen by the EPA,” and said the proposed text adds environmental requirements that will apply before any residential certificates of occupancy are issued.

Board action: The board voted on separate transmitted items. The planning commission’s recommendation to find HCCPA 20-315 (the primary text amendment) consistent passed on a 6–1 vote (Commissioner Cameron Cepeda cast the lone no). A second related amendment that explicitly enables a residential pocket south of the railroad tracks and includes the pre-construction sampling and 1,4-dioxane testing also passed 6–1. A third technical amendment (deleting or adjusting a narrow policy provision) passed 7–0. Commissioners who supported the amendments said the changes place far stronger environmental requirements on future development than prior entitlements did and provide a path for site-specific testing and mitigation before residential occupancy.

What happens next: The amendments were transmitted, and the county and applicants will coordinate with state and federal agencies to complete additional groundwater sampling and any mitigation required before residential development would be permitted. Opponents argued that broader site testing and a more cautious pause are still necessary before allowing any residential construction in the former phosphate-mining area.

Votes at a glance: HCCPA 20-315 — adopted 6–1. HCCPA 20-406 (residential pocket with environmental testing requirements) — adopted 6–1. HCCPA 20-432 (technical deletion) — adopted 7–0.