To maintain 911 police emergency response times; violent crime prevention/property investigations; school safety; youth, recreation, senior programs; storm drains/pollution prevention; retain/recruit experienced police officers; protect and maintain open space/parks; address homelessness; other essential City services; shall an ordinance be adopted establishing a local, half-cent sales tax for 15 years, providing $3,200,000 annually, with citizens’ oversight, annual audits, all funds spent only in Martinez?