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5.21 Climate Change

25 percent relative to water use in 2013 (California 2015b). The California Department of
Water Resources (DWR) updated the MWELO in December 2015 to incorporate these
elements and the emergency drought regulations set forth by EO B-29-15, which establish
improved efficiency standards for water appliances.

Senate Bill X7-7 (Water Conservation Act of 2009)

The Water Conservation Act of 2009 sets an overall goal of reducing per-capita urban water
use by 20 percent by December 31, 2020. The State is required to make incremental progress
toward this goal by reducing per-capita water use by at least 10 percent by December 31,
2015. This in an implementation measure of the Water Sector of the AB 32 Scoping Plan.
Reduction in water consumption directly reduces the energy necessary and the associated
emissions to convey, treat, and distribute the water; it also reduces emissions from
wastewater treatment.

The DWR adopted a regulation on February 16, 2011, that sets forth criteria and methods
for exclusion of industrial process water from the calculation of gross water use for purposes
of urban water management planning. The regulation would apply to all urban retail water
suppliers required to submit an Urban Water Management Plan, as set forth in the California
Water Code (specifically, Division 6, Part 2.6, Sections 10617 and 10620).

CARB Airborne Toxic Control Measures and Emission Standards

CARB adopted an airborne toxic control measure to limit heavy-duty diesel motor vehicle
idling in order to reduce public exposure to diesel particulate matter (PM) and other toxic
air contaminants, and promulgated emission standards for off-road diesel construction
equipment such as bulldozers, loaders, backhoes, and forklifts, as well as many other self-
propelled off-road diesel vehicles.

Senate Bill 97 (State CEQA Guidelines)

SB 97 required OPR to prepare amended the State CEQA Guidelines for submission to the
California Natural Resources Agency (CNRA) regarding GHG analysis and feasible mitigation
of the effects of GHG emissions as required by CEQA. These amendments became effective as
of March 18, 2010. The adoption of SB 97 and subsequent CEQA amendments are widely
recognized as confirmation that lead agencies are required to include an analysis of climate
change impacts in CEQA documents.

CEQA Amendments

Pursuant to SB 97, OPR developed proposed amendments to the State CEQA Guidelines
(CEQA Amendments) for the feasible mitigation of GHG emissions and their effects, which it
first submitted to the Secretary of the CNRA on April 13, 2009. After a public review and
comment period, on December 30, 2009, the CNRA adopted the CEQA Amendments, which
became effective on March 18, 2010.

The CEQA Amendments for Greenhouse Gas Emissions state in Section 15064.4(a) that lead
agencies should “make a good faith effort, to the extent possible on scientific and factual data,
to describe, calculate or estimate” GHG emissions. The CEQA Amendments note that an

R:\Projects\PAS\CEN\000306\Draft EIR\5.21 ClimateChange-051117.docx 5.21-26 Centennial Project
Draft EIR