Environmental Chemical Corp., Burlingame, California, is awarded a $16,356,160 firm-fixed-price modification to increase the maximum dollar value of an existing task order for South Airfield Military Construction Project at Naval Air Weapons Station (NAWS) China Lake, California. Work will be performed at NAWS China Lake, California, and is expected to be completed by November 2023. After award of this modification, the total cumulative contract value will be $762,088,085. Fiscal 2022 working capital funds (Navy) in the amount of $16,356,160 are obligated on this award and will expire at the end of the current fiscal year. Naval Facilities Engineering Systems Command, Officer in Charge of Construction, China Lake, California, is the contracting activity (N62473-20-F-5226).