Morning Wrap: 4/12/12

News and notes:

• City College of San Francisco chancellor Don Griffin disclosed that he’s battling a brain tumor and will retire this month. Chronicle
• A new poll shows just 43 percent of likely Bay Area voters are willing to pay a 10-cent per gallon gas tax to fill potholes and improve transit. Chronicle
• How South of Market has become San Francisco’s safe haven for marijuana dispensaries. Chronicle
• Murderer Charles Manson was a no-show at his parole hearing; his parole was denied for the 12th time. Chronicle
• The Oakland Tribune explains why so much trash gets dumped on the city’s streets.
• A  man was shot while walking his dog in the Oakland hills last night. Oakland Tribune
• The Giants, now 1-4, were pounded 17-8 in Colorado after Tim Lincecum gives up 8 hits, 2 walks and 6 runs in 2 1/3 innings. Chronicle