City of Frisco Engineering Standards

Engineering Standards
Section 8 – Environmental Requirements
8.01 General
The Owner must provide proof of compliance with applicable local, state, and federal
environmental regulations upon request by the City.
8.02 Storm Water Management Plan (SWMP) – Permanent Controls
A. General Requirements
A Storm Water Management Plan (SWMP) shall be prepared for all developments in accordance
with the Subdivision Ordinance. The SWMP shall be developed and coordinated with the site
drainage plan and may be shown on the same sheet. The SWMP shall identify permanent site
features and controls that will be constructed with the project to minimize and mitigate the
project’s long-term effects on storm water quality and quantity.
The SWMP should also be coordinated with the landscaping plan to prevent conflicts and ensure
compatible land use.
B. Site Development Controls (Permanent)
It is the responsibility of the engineer to design permanent controls that address site specific
conditions using appropriate design criteria for the North Central Texas region. Refer to
NCTCOG iSWM Technical Manual for current recommended practices. Some of the
factors to be considered when evaluating and selecting controls for a development are as
follows:
• Effect of the development on runoff volumes and rates
• Potential pollutants from the development
• Percent of site treated by the control
• On-site natural resources
• Configuration of site (existing waterways, topography, etc.)
The following are some examples of permanent controls:
• Preservation of natural creeks
• Site specific stormwater controls
• Vegetated swales
• Preservation of the 100-year floodplain
• Detention ponds
• Retention ponds
Section 8 – Environmental Requirements May 2012 Page 8-2