Stormwater Quality Analysis & Design

A challenging aspect of Civil Engineering today has been a significant increase in the number and sophistication of the reports that are required for project permitting.  These reports mainly deal with pollution analysis and prevention.

Stormwater Pollution Prevention Plans

Analysis and design of construction site devices called BMPs to minimize pollutant discharges.

Storm Water Quality Management Plan

called many things by local jurisdictions (SWQMP, SWMPs, WQPs, etc.) these reports are used to analyze and design permanent BMPs for a site to control pollutant discharges during the life of the project

Hydrologic Drainage Area Studies

(DAS), technical reports also called Hydrologic Studies, they are created to predict the amount of stormwater runoff from a project based on different storm frequencies. Typical storm frequencies include the 2-year storm, 10-year storm, 5-year storm, and 100-year storm.

Hydromodification Management Plans

(often called HMODS), can be required for any significant development proposed within City or county jurisdictions.  These are also being planned for future requirements in the Colorado Springs area.  These are performed using complex continuous simulations using local historical rainfall records so that development can be evaluated against the stormwater runoff increase it may bring after construction, compared to the condition of the project site before it is constructed.