If your flood fee is paid to a 3rd party vendor, it does NOT belong in Block 1.
From the FAQ
What services belong in Block 3, ―Required services that we select‖?
A: Block 3 of the GFE contains the charges for all third-party settlement services (except title services) for which the loan originator requires and selects the provider of the service. Examples of these charges for services generally include but are not limited to, appraisal, credit report, tax service, flood certification and up-front mortgage insurance premiums.
My opinion only. Not legal advice.
Say you'll haunt me - Stone Sour