WORK PLANS - Laserfiche WebLink

Home Browse Search

Revised Workplan-Additional Site Investigation for PFAS BSK Project E20-016-01F Stockton Metropolitan Airport(SCK) March 1, 2023 Stockton, California Page 1 1 INTRODUCTION BSK Associates(BSK)conducted a Preliminary Site Investigation (PSI)at the Stockton Metropolitan Airport (SCK) located at 5000 South (S.) Airport Way, Stockton, San Joaquin County, California (Site). That investigation was published a report titled "Revised Report Preliminary Site Investigation for PFAS Stockton Metropolitan Airport (SCK) Stockton California" dated October 15, 2021, and revised May 1, 2022,which was approved by the CRWQCB in their letter dated March 2, 2022.A Vicinity Map is provided as Figure 1. A Site Map is provided as Figure 2, Figure 3 shows Aqueous Film-Forming Foam (AFFF) Use Areas and Potential Release Areas, Figure 4 details sensitive receptors, and Figures 5, 6 and 7 show PRA 1, 2 and 3 respectively. Please note that PRA-3 is not required to be investigated further, however, past data references the area, and therefore Figure 7 was included. 2 BACKGROUND This section provides project background, which include a description of the Site and location, Site operational history overview, prior environmental investigations,description of PRAs, 1 and 2,and project history. 2.1 Site Location and Description SCK is a joint civil-military airport located at 5000 South Airport Way in Stockton, San Joaquin County, California (Site). Figure 1 is a Vicinity Map. SCK is situated three miles southeast of downtown Stockton, in San Joaquin County, California. SCK is owned by the County of San Joaquin and is categorized by the National Plan of Integrated Airport Systems as a primary commercial service airport. Figure 2 is a Site Plan. The airport property covers an area of 1,552 acres at a general elevation of 33 feet (ft) above mean sea level (msl). SCK has two asphalt runways and two concrete helipads: • Runway 11L/29R, with dimensions of 10,650 by 150 ft • Runway 11R/29L, with dimensions of 4,448 by 75 ft • Helipads H1 and H2 which both have dimensions of 70 by 70 ft. SCK has a 44,355 square foot(sf) terminal building. Fire protection services at SCK are provided by Station 18-2 of the Montezuma Fire District(MFD), which is located on the SCK property. MFD houses two Crash Fire Rescue (CFR) apparatuses and one Aircraft Rescue and Firefighting (ARFF) "Type 1" Engine 18-2 vehicle that responds to calls only within the SCK grounds. CFR 181 carries 1,500 gallons(gals)of water and 200 gals of AFFF. CFR 184 carries 1,500 gallons (gals) of water and 180 gals of AFFF. Engine 18-2 is equipped with a 750-gal water tank, a 50-gal foam tank, and 1,250 gallon per minute (gpm)fire pump and front-mounted turret.