A.

The Coastal High Hazard Area (CHHA) is the area below the elevation of the Category 1 storm surge line as established by the sea, lake and overland surges from hurricanes (SLOSH) computerized storm surge model. The CHHA is generally shown on the map in the coastal management element of the Comprehensive Plan. Development within these areas shall be consistent with the goals, objectives and policies of the Comprehensive Plan.

B.

New construction of hospitals, nursing homes and assisted living facilities is prohibited in the CHHA.

C.

New mobile home parks are prohibited in the CHHA.

D.

Solid waste and commercial hazardous waste management facilities including regional storage, treatment or transfer sites are prohibited in the CHHA.

E.

New construction of residential multifamily dwelling units resulting from a density/intensity increase from a plan amendment after October 8, 2020 shall provide for hurricane shelter mitigation. Such mitigation for the impacts attributable to the development shall include one or a combination of the following: payment of a hurricane mitigation shelter fee, contribution of land, or construction of hurricane shelters. If the property owner elects to contribute land or construct hurricane shelter space, a binding agreement, approved by the City Attorney's Office, shall be executed regarding such mitigation prior to issuance of a building permit for construction of the residential units.

F.

Construction, expansion or substantial renovations of hotel uses shall provide a hurricane evacuation and closure plan that complies with all Pinellas County and City of St. Petersburg hurricane evacuation plans and procedures to ensure orderly evacuation of guests and visitors pursuant to the Pinellas County Code, Chapter 34, Article III.

G.

New construction of multi-family residential dwelling units shall provide a hurricane evacuation and re-entry plan requiring mandatory evacuation in accordance with emergency management directives. The plan shall include operating procedures for how the project will handle loss of off-site or grid power, transition to a backup source of power (if available), and transition back to normal operation. Such requirements shall be incorporated into a legally binding document such as lease documents, condominium rules, homeowner rules, or other such method approved by the POD.

(Code 1992, § 16.30.040.1; Ord. No. 985-G, § 42, 7-15-2010; Ord. No. 428-H, § 1, 10-8-2020)

A.

Purpose. The City of St. Petersburg is committed to improving the capacity to endure and quickly recover from coastal hazards. This section in concert with Building Code Section 8.36(c)(1) is intended to ensure that developments are more resilient to storm surge and sea level rise, mitigate for service and infrastructure needs during and immediately following major storm events, and enable safe re-occupation following an evacuation or weather event.

B.

New construction of multi-family residential dwelling units in the CHHA shall comply with Building Code Section 8.36(c)(1) requiring two feet of additional freeboard (for a total of four feet above the minimum FEMA design elevation) and building design of the next higher risk category classification, in addition to the following CHHA Design Standards. Projects containing up to 199 units shall provide one item. Projects containing 200 units or greater shall provide two items. Projects containing dwelling units resulting from a density increase from a plan amendment after October 8, 2020 shall provide one additional item for every 50 additional units.

a.

On-site battery storage of solar generated power to keep critical functions working in the event of power failure;

b.

Install a cool/high-reflectance roof (coating that is white or has special reflective pigments that reflect sunlight) on at least 75 perfect of the total roof area of the development, with a minimum SRI (solar reflectance index value) of 39 and in accordance with the standards set by the HVWZ;

c.

Install a geothermal energy heating and cooling system that serves as least 75 percent of the project's residential units;

d.

Pre-wire all units to accept power provided by on-site solar panels and/or wind turbines;

e.

Install a 16-20+ SEER HVAC system in each dwelling unit;

f.

Install efficient, zone-controlled heating and cooling systems in each residential unit (mini-splits, or smart thermostats, etc.);

g.

Install a solar or tank-less water heating system in each residential unit;

h.

Install no fewer than two operable windows on no fewer than two exterior walls in each unit;

i.

Install a generator for power generation to keep critical functions working in the event of power failure;

j.

Install highly-reflective blinds/shades, low-E window film/tint, external/structural shade to reduce solar gain;

k.

Provide for a resilient common area with back-up power source to provide air-conditioning and power, food, water and emergency supplies to support residents after a storm event;

l.

Provide for a neighborhood resilience hub to provide on-site and neighborhood residents point of distribution of services before and after storm events;

m.

Utilize mold-resistant building materials in all kitchens and baths, such as fiberglass-faced drywall, mold-resistant drywall tape, tile, ceramic, terrazzo, or stained concrete, rated "resistant" or "highly resistant" according to UL 2824 and in compliance with ASTM D 3273 standard;

n.

Protect coastal property with a living shoreline (LSL) per the US Army Corps of Engineers (USACE) Living Shoreline Permit Standard. (LSLs use natural materials to stabilize the shoreline and maintain valuable fish and wildlife habitat; LSLs utilize a variety of materials such as wetland plants, oyster shell, coir fiber logs, sand, wood, and native rock.)

C.

Alternative methods of compliance. In lieu of compliance with subsection B above, for large tract planned development projects and projects which are subject to site plan review, an applicant may propose an alternative method of compliance for review and approval by the DRC. The applicant will need to demonstrate that the site-specific analysis and wholistic resilient design methods meet or exceed the requirements of the CHHA Design Standards through such methods as follows:

• Provision of a site-specific risk assessment analysis;

• Addressing infrastructure improvements such as-wet/dry proofing, raising streets and flood gates;

• Provision of park/green space which allows for standoff buffer during flood events and can be designed in tiers to provide flood capacity; and

• Inclusion of an operations/maintenance component where the development/users actively prepare for an event (e.g., down draining ponds/basins, closing flood gates, etc.).

(Ord. No. 428-H, § 2, 10-8-2020)