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A. Permit review. Review all development permits to determine that:

1. The permit requirements of this chapter have been satisfied;

2. All other required State and Federal permits have been obtained;

3. The site is reasonably safe from flooding;

4. In areas where a floodway has not been designated, that proposed development does not adversely affect the carrying capacity of areas where base flood elevations have been determined. For purposes of this chapter, adversely affect means that the cumulative effect of the proposed development, when combined with all other existing and anticipated development, will not increase the water surface elevation of the base flood more than one foot at any point.

B. Substantial improvement and substantial damage procedures.

1. Using FEMA Publication P-758, "Substantial Improvement/Substantial Damage Desk Reference (2010)," develop detailed procedures for identifying and administering requirements for substantial improvement and substantial damage, to include defining "market value."

2. Ensure procedures are coordinated with other departments and divisions and implemented by community staff.

C. Use of other base flood data. When base flood elevation data has not been provided in accordance with Section 32B-7, the Floodplain Administrator will obtain, review and reasonably utilize any base flood elevation data available from a Federal, State or other source, in order to administer Article V of this chapter. Any such information must be consistent with the requirements of FEMA and the Director of the Arizona Department of Water Resources and may be submitted to the Floodplain Board for adoption.

D. Obtain and maintain for public inspection:

1. Certification required in Sections 32B-20(C)(1) and 32B-24 (lowest flow elevations, bottom of the structural frame and utilities);

2. Certification required in Section 32B-20(C)(2) (lowest floor elevations or floodproofing of nonresidential structures and utilities);

3. Certification required in Section 32B-20(C)(3) (flood vents);

4. Certification required in Section 32B-23(A)(2) (subdivisions and other proposed development standards);

5. Certification required in Section 32B-26(A) (floodway encroachments);

6. Records of all variance actions, including justification for their issuance; and

7. Obtain and maintain improvement and damage calculations, required for subsection B of this section, over a rolling five-year period.

E. Notification of other entities.

1. Whenever a watercourse is to be altered or relocated:

a. Notify adjacent communities and the Arizona Department of Water Resources prior to such alteration or relocation of a watercourse, and submit evidence of such notification to FEMA through appropriate notification means; and

b. Ensure that the flood carrying capacity of the altered or relocated portion of said watercourse be maintained.

2. Base flood elevation and rate of flow due to physical alterations.

a. Base flood elevations may increase or decrease resulting from physical changes affecting flooding conditions. As soon as practicable, but not later than six months after the date such information becomes available, the Floodplain Administrator will notify FEMA of the changes by submitting technical or scientific data in accordance with 44 CFR Section 65.3. Such a submission is necessary so that upon confirmation of those physical changes affecting flooding conditions, risk premium rates and floodplain management requirements will be based upon current data.

b. Within 120 days after completion of construction of any flood control protective works which changes the rate of flow during the flood or the configuration of the floodplain upstream or downstream from or adjacent to the project, the person or agency responsible for installation of the project must provide to the governing bodies of all jurisdictions affected by the project a new delineation of all floodplains affected by the project. The new delineation must be done according to the criteria adopted by the Director of the Arizona Department of Water Resources.

3. Corporate boundary changes. Notify FEMA of acquisition by means of annexation, incorporation or otherwise, of additional areas of jurisdiction.

F. Map determinations. Make interpretations, where needed, as to the exact location of the boundaries of the special flood hazard areas (e.g., where there appears to be a conflict between a mapped boundary and actual field conditions). The person contesting the location of the boundary will be given a reasonable opportunity to appeal the interpretation as provided in Article VI of this chapter.

G. Remedial actions. Take actions on violations of this chapter as required in Section 32B-14.

H. Policies and procedures. Develop and adopt policies and procedures necessary to implement this chapter. (Ord. No. G-5707, 2012; Ord. No. G-6611, 2019; Ord. No. G-7116, § 2, 2023; Ord. No. G-7218, § 1, 2024)