(b)

1. (1) Water treatment and sewage treatment plants shall not be constructed with the lowest floor or operations level below the base flood elevation.
2. (2) When topography requires that such facilities must be constructed below the base flood elevation, the facility shall be protected from flooding by the use of levees or floodwalls and provided with reliable means to remove rainwater before over topping the critical treatment tanks or structures.

(c)

1. (1) Where these types of structures must be located within a floodplain, the department must elevate the building or equipment pads above the base flood elevation by installing suitable fill.
2. (2) This installation must comply with the provisions of 22 CAR § 111-707.

(d)

1. (1) The department may make application to the Federal Emergency Management Agency for the site to be removed from the floodplain based on this fill activity.
2. (2) If the Federal Emergency Management Agency approves the application, it will issue a letter of map amendment based on fill (LOMAF).
3. (3) A copy of this letter must be submitted to the Design Review Section before the plans can be approved for bidding or construction.

4. (4) Note that this approval:

   1. (A) Is for insurance purposes under the National Flood Insurance Program only; and
   2. (B) May not result in a premium reduction under the current state master insurance policy.
5. (5) The department shall verify the insurance requirements and restrictions with its insurance risk management representative.