Guidance and Logos for State Propositions
State Propositions frequently require that their logo is included in signage. Below is the guidance applied by the Conservancy, but please refer to your Grant Agreement and guidance from the California Natural Resources Agency on logo usage as well.
Art files for all logos can be found here: http://resources.ca.gov/grants/logo-art/
Proposition 1

Prop 1
Projects receiving funding from Prop 1 are required to include the Prop 1 logo on their signage. Grantees shall acknowledge funding from the Water Quality, Supply, and Infrastructure Improvement Act of 2014 (Proposition 1) by using the official logo prepared by the California Natural Resources Agency.
Proposition 12

Prop 12
Our model grant agreement requires any projects receiving Prop 12 funding to include the Prop 12 logo on signage. Guidance on usage of this logo can be found here.
Proposition 68

Prop 68
Please consult with your Grant Manager on the use of Prop 68 logo.