§ 16.40.030.6. Rules and regulations.

A.

With the exception of replacing references to the district with references to the City, all the provisions of F.A.C. chs. 40D-4 and 40D-40 are expressly made a part of this section and are incorporated herein by reference as if fully set forth, with those exceptions and clarifications as stated hereafter.

B.

The City Council may adopt such rules and regulations as it may deem necessary to effectuate the purpose and intent of this section as well as to provide for administrative efficiency.

C.

The following exceptions and clarifications to the rules and regulations as contained in F.A.C. chs. 40D-4 and 40D-40 shall be administered as part of this section.

1.

Water quality.

a.

Stormwater discharge from development sites shall meet state water quality standards and criteria as set forth in F.A.C. ch. 62-3 and 62-4.242.

b.

That portion of the site upon which redevelopment occurs shall meet the water quality controls and treatment required for development sites. The volume of runoff to be treated shall include all off-site and on-site areas draining to and commingling with the runoff from that portion of the site which is redeveloped. Where it is not possible or practical to provide water quality treatment within the site upon which redevelopment occurs, treatment of an equivalent amount of similar runoff within the same City drainage basin or payment in lieu of providing the improvements necessary to treat an equivalent amount of similar runoff may be allowed. All sums collected as payment in lieu of improvements shall be placed in a stormwater utility fund and shall be expended for the creation or maintenance of stormwater quality treatment and alternate mitigation facilities or for reimbursement for capital expenditures made by the City for construction or maintenance of such facilities. Payment in lieu of compliance shall be made as provided in section 12-6.

c.

A proposed residential development of up to four dwelling units which is not part of a larger unified plan of development shall be exempt from water quality requirements.

d.

Reconstruction in association with projects required under the Florida Administrative Code for the assessment and remediation of contaminated soils and ground water shall be exempt from water quality requirements. The exemption is limited to the area reconstructed after remediation to restore the project to its pre-assessment/remediation condition.

2.

Water quantity. The section 3.2.1.2(b) (c) and section 4.6, as described by F.A.C. 40D-4.091, are hereby changed as follows:

a.

Water quantity discharge. Any proposed development or redevelopment of a site shall not cause the rate of stormwater discharge released from the site to exceed the discharge generated by the site in the predeveloped condition. Additional runoff created due to the development or redevelopment shall be retained on site and released at a rate not to exceed the predeveloped rate.

b.

Stormwater retention and runoff calculations. The maximum rate of stormwater runoff released from a site and the required retention volume shall be calculated using the rational formula, Q = CIA, where "Q" is the rate of runoff in cubic feet per second, "C" is the coefficient of runoff, "I" is the intensity of rainfall in inches per hour per the current State of Florida Department of Transportation Rainfall Intensity Curves for Zone VI, St. Petersburg, using the ten-year, one-hour design storm, and "A" is the drainage area in acres. Other formulas as described in F.A.C. 40D-4.091 shall be suitable when approved by the POD.

3.

Exemptions from water quantity retention and discharge requirements.

a.

A proposed residential development of up to four dwelling units which is not part of a larger unified plan of development is exempt.

b.

Reconstruction in association with projects required under the Florida Administrative Code for the assessment and remediation of contaminated soils and ground waters. The exemption is limited to the area reconstructed after remediation to restore the project to its pre-assessment/remediation condition.

4.

Exemptions. F.A.C. 40D-4.051, Exemptions, is hereby deleted from this section and all development or redevelopment that would have been exempt under that rule must comply with the requirements of this section.

(Code 1992, § 16.40.030.6; Ord. No. 287-H, § 15, 7-20-2017)