Draft EA - San Diego International Airport

SAN DIEGO INTERNATIONAL AIRPORT – PROPOSED RUNWAY 9 DISPLACED THRESHOLD
In a Memorandum of Understanding (MOU) with the Attorney General of the State of California dated May 9,
2008 21 steps were outlined to reduce GHG emissions that might otherwise occur with future growth of air
travel to and from SDIA. The MOU outlined the terms of compliance with specific measures included in
Exhibit A, which included the SDCRAA agreeing to implement:
Reduction in Aircraft On-the-Ground-Energy Usage
Reduction of Landside Energy Usage
Use of Green Materials and Sustainable Design
Use of Green Construction Methods and Equipment
Coordination and Encouragement of Tenants to Address GHGs
This memorandum of agreement represents SDIA’s goal of minimizing the potential impacts of GHG on the
environment.
3.5.2 WATER QUALITY
SDIA is generally flat with local minor elevation variations due to landscaping. Elevations across the area
range from approximately 7 to 15 feet above mean sea level (MSL). 22
The APE is situated within the Pueblo
San Diego Hydrologic Unit (HU) listed in the San Diego Basin Plan. 23
The average annual precipitation at SDIA
is approximately 12 inches. 24
According to the San Diego Regional Water Quality Control Board, groundwater flow is assumed to be
southward toward San Diego Bay. 25
The general hydrologic regime includes: freshwater underflow from the
regional groundwater system toward San Diego Bay; freshwater recharge from water and wastewater
distribution, collection, and transmission lines; saline water encroachment from the ocean, and potentially
from the larger, deeper storm drains; and brackish to saline native groundwater beneath the artificial fill. The
San Diego Formation in the area south of SDIA is the principal aquifer that provides groundwater recharge.
Because of SDIA’s proximity to San Diego Bay, diurnal changes in sea level caused by lunar tides also cause
concurrent changes in the level of groundwater elevations in the near-shore groundwater.
In 2005, prior to transfer of the General Dynamics and Teledyne Ryan properties to the SDCRAA,
approximately 85-90 percent of Airport property was impervious area covered by buildings and paved
21
22
23
24
25
San Diego Airport and State of California Justice Department, Memorandum of Understanding, May 9, 2008,
http://www.san.org/documents/airport_authority/MOU_SDCRAA_AG_Master_Plan_2008.pdf (accessed: April 23, 2012).
San Diego Regional Water Quality Control Board, San Diego Region, Water Quality Control Plan for the San Diego Basin, September 8,
1994.
MACTEC, Hydrology Report for Storm Drainage System BMP Program at San Diego International Airport, April 2005.
San Diego County Regional Airport Authority, Fiscal-year 2004-2005 Municipal Stormwater Permit Annual Report, January 2006.
San Diego Regional Water Quality Control Board, San Diego Region, Water Quality Control Plan for the San Diego Basin, September 8,
1994.
Draft EA
Affected Environment
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