also requires a finish material pollutant control and an acoustical control for exterior noise transmission and interior sound. The CALGreen 2010 Code was adopted by the California Building Standards Commission (CBSC), the California Department of Housing and Community Development (HCD), the Division of the State Architect (DSA) within the California Department of General Services, and the Office of Statewide Health Planning and Development (OSHPD) within the California Health and Human Services Agency. CBSC has the responsibility to administer the program and review building standards proposed by state agencies, develop building standards for occupancies where no other state agency has the authority (non-residential) and adopt and approve building standards for publication. The targets of the Code are designers, architects, builders, property owners, and also businesses and the government that have to take into consideration the new standards when they decide to build new structures. History Several legislative bills like AB 35, AB 888, and AB 1058 were introduced during the 2007–2008 legislative session to require green building standards for state-owned or leased buildings, commercial buildings, and residential buildings respectively. Development of CALGreen began in 2007 and, during the rulemaking process, CBSC collaborated with the Department of Housing and Community Development (HCD), stakeholder groups and others. The first result of this cooperation was the adoption of the 2008 California Green Building Standards Code (CGBC) that became effective since August 1, 2009. The initial 2008 California Green Building Code publication provided a framework and first step toward establishing green building standards for low-rise residential structures. 2008 GBSC was used as a base document, analyzed and evaluated for necessary updates that lead to the 2010 CALGreen Code, but this is not the last step of the process: as new materials, technology, and designs are developed and become available, also CALGreen has to develop. There are some enhancements from the 2008 Code to the 2010 one, among them: The previous code said that energy efficiency was regulated by the California Energy Code. Section 4.201.1 of CALGreen 2010 clarifies instead that the CEC adopts regulations to establish the minimum level of energy efficiency a structure that is heated or cooled must meet or exceed. About indoor water use, HCD adopted maximum flush rates for toilets and the CEC adopted appliance standards which limit water use of appliances and fixtures. Section 4.303.1 of 2010 CALGreen reduces indoor water use by at least 20% and it also provides