01:00 PM - 02:00 PM
25 October 2022

San Diego Airport Stormwater Capture and Reuse

Significant Projects

Jacobs is supporting the San Diego County Regional Airport Authority in their $3 billion expansion program to enhance the airfield and replace the aging Terminal 1 at San Diego International Airport (SAN) with a newly expanded terminal. The main components of the SAN Airport Development Plan (ADP) will include the Terminal 1 replacement, an on-airport access road, a transit-ready area, and the associated airfield improvements. Jacobs performed the schematic and final design of the stormwater capture and reuse improvements as part of the ADP. Jacobs developed a stormwater capture and reuse alternative that removes the impacts to the endangered California Least Tern nesting area, optimizes proposed stormwater facilities, and maximizes stormwater management credits that can be applied to future capital improvements for the Airport Authority.

The stormwater design includes the design of an underground concrete cistern and innovative underground storage and infiltration facilities within airport infield islands. The submersible pumps within the cistern are designed to provide flow to maximize stormwater reuse for the cooling towers at the Central Utility Plan, and pump additional stormwater to the underground infiltration areas. The optimization of the stormwater capture and reuse system reduced the size of the cistern from 3.5 to 1.5 million gallons, resulting in significant cost savings. The stormwater optimization achieved the MS4 permit requirement to reuse or infiltrate at least 80 percent of the annual runoff volume, demonstrated through continuous simulation modeling in EPA’s Storm Water Management Model (SWMM).