Owens Lake Regulatory and Dust Control Implementation History

Great Basin Unified Air Pollution Control District

National Academy of Sciences Owens Lake Scientific Advisory Panel May 3, 2019

Phillip L. Kiddoo Air Pollution Control Officer The Great Basin Unified Air Pollution Control District is a California regional government agency that works to protect the people and the environment of Alpine, Mono and Inyo counties from the harmful effects of air pollution. Owens Lake This photo, taken in 1891, from the eastern shore of Owens Lake near Keeler, shows the crest of the Sierra Nevada in the background.

(Collection of the Henry E. Huntington Library) Owens Lake from Cerro Gordo Mine

(The Cerro Gordo Collection, courtesy Mike Patterson) In 1913, the City of Los Angeles’ Department of Water and Power (LADWP) completed construction of the Los Angeles Aqueduct. The Aqueduct diverted Owens River water destined for Owens Lake 223 miles south to Los Angeles. November 5, 1913 – “There it is, take it” Desiccated Owens Lake PM10 Event at Owens Lake Regulatory Timeline (Prior to Owens Lake Dust Control Implementation)

• Inyo County, Mono County and Alpine County Air Pollution Control Districts Unify to form the Great Basin Unified Air Pollution Control District - March 1, 1974 • California Health & Safety Code 42316 - September 1, 1983 • PM10 standard promulgated - July 1, 1987 • OVPA Nonattainment for PM10 - August 7, 1987 • 1988 State Implementation Plan (SIP) Owens Valley Planning Area

Serious Non-Attainment

Area for PM10 Land Ownership 1988 dust producing area of concern (46.5 mi²) Regulatory Timeline Dust Control (Dust Control Implementation) Area 1998 SIP 16.5 mi² 2003 SIP 29.8 mi² 2005 Supplemental Control Requirement Determination (SCRD) 2006 Settlement Agreement (SA) (adds 12.7 mi²) 2008 SIP 43 mi² 2011 Stipulated Order of Abatement (SOA) 45 mi² 2011, 2012 & 2013 SCRDs (adds 3.62 mi²) 2013 Modified Stipulated Order of Abatement (MSOA) 2013 Keeler Dunes Settlement (KDS) and SIP Amendment (SIPA) 2014 Stipulated Judgment (SJ) 2016 SIP (4.8mi² contingency) 48.6 mi² Ordered, 47.8 mi² Actual Rule 433 – Control of Particulate Emissions at Owens Lake 1998 SIP 2003 SIP 2005 SCRD 2006 SA 2008 SIP 2011 SOA 2011 SCRD 2012 SCRD 2013 SCRD 2013 MSOA 2013 KDS 2013 ASIP 2014 SJ 2016 SIP Are all dust sources controlled?

Are all emissive areas controlled? Owens Lake Dust Controls

Future dust source areas? Future dust source areas? Regulatory Timeline (Future)

• 2014 Stipulated Judgment commitments and successful completion of all provisions. • 2016 SIP and Rule 433 – Control of Particulate Emissions at Owens Lake enforcement and monitoring to meet or exceed all performance criteria legal requirements.

Additional Dust Control Provisions (4.8mi² Contingency) Dust Control Area Total = 53.4 mi² Dust Control Today at Owens Lake