The state agency has allowed the company to operate for decades without a full permit.
Jim Marxen, the agency's top spokesman, said last week that regulators do not have a good explanation for the plant's continued operation without a full permit.
For decades, the Department of Toxic Substances Control has allowed the plant to operate without the full permit required by federal law.
Shell still awaits a full drilling permit for its exploration programme in the area and the paperwork is dependent on successful testing of its Arctic containment system, which includes the dome.
City buildings department records show a permit for full demolition of the existing eight-story building at that spot was issued in May.
The Environment Agency has issued a permit for the full drain-down of water from the Llanishen reservoir in Cardiff north, but campaigners say the decision is not the final verdict on the future of the reservoir.
"Per standard safety procedure, FDOT would issue a permit for partial or full road closure if deemed necessary and requested by the FIU design build team or FIU contracted construction inspector for structural testing," the department said in a statement.
A cookery student called Dave told me, "When I take my boat up on the Norfolk Broads, the Broads authority want to charge me for a full week permit, even if I'm just out for the day.
The archdiocese has not applied for a full demolition permit, and said it was only shoring up damaged sections.
The New York Archdiocese, for its part, has suspended its plans to build apartments for senior citizens at the St. Thomas site and has not yet applied for a full demolition permit.
