CC4EJ operates on the unceded lands of the Lenni-Lenape people, whose relationship to this land — including Naaman's Creek and the Delaware River — continues today. Learn more →
🧹 Help clean up Claymont! Volunteer or suggest a cleanup spot. Sign up →

🧹 Help Clean Up Claymont

We're organizing community cleanups across Claymont. Whether you want to show up with gloves or you know a spot that needs attention — we want to hear from you. Sign up below and we'll reach out.

Honeywell / Allied Chemical Site — Ongoing Accountability

The former Allied Chemical and Dyes / Honeywell Delaware Valley Works site in Claymont has a history that includes uranium production and research under the Atomic Weapons Employer program — a fact that was left out of EPA's cleanup documents. Since early 2023, the Claymont Coalition for Environmental Justice (CC4EJ) has been pushing for a complete and transparent remedy, working alongside the Natural Resources Defense Council (NRDC), the Environmental Justice Health Alliance (EJHA), and Delaware Concerned Residents for Environmental Justice.

Claymont residents at a public meeting on the Honeywell site cleanup

A Win for Claymont

After nearly two years of advocacy — starting with a congressional briefing packet in early 2023 — CC4EJ helped secure an amended final remedy for this site. In April 2025, EPA Region 3 issued an Amendment Memorandum to the RCRA Corrective Action Final Decision for the Honeywell Delaware Valley Works South Plant. CC4EJ pushed the EPA to acknowledge omitted site history, include excluded public comments, and strengthen cleanup requirements. This happened because residents showed up, asked hard questions, and refused to accept the original plan.

View the EPA documents →

Key Talking Points

  • This site produced uranium under the Atomic Weapons Employer program — and that history was left out of EPA's cleanup documents. Residents deserve a remedy that accounts for the full picture.
  • A 1977 DOE reassessment relied on employee recollections, not actual soil or water sampling. That's not good enough for a community that lives next door.
  • Solstice Advanced Materials — a Honeywell spinoff — is now listed on the site parcels. Accountability shouldn't disappear when a company changes its name.
  • Claymont residents should not pay the health cost of a site cleaned to industrial — not residential — standards.
  • This site doesn't exist in isolation. The pollution here adds to everything else Claymont already deals with.
  • Community health monitoring must be ongoing and results must be shared directly with residents.
  • Any settlement funds should go directly to Claymont community health resources.

Did You or Someone You Know Work at Allied Chemical?

We're collecting stories from people who worked at the Allied Chemical plant — especially between 1950 and 1970. Your experience matters. What you saw, what you were exposed to, and what happened to your health could help the whole community.

Everything you share is confidential unless you say otherwise.

Share Your Story

Your information goes directly to the CC4EJ team at connect@cc4ej.org. We will never share it without your permission.

Contact Your Elected Officials

Did your rep show up? Did they vote right? Here's how to reach them — and how to tell us what happened when you do.

State Rep. Lambert

Email about Claymont environmental justice priorities.

Email Rep. Lambert