mr. wittig. >> hello. my name is george wittig. i'm the president of the coalition for san francisco neighborhoods. thank you for having this joint hearing. the issue before you today are what the community has been wrestling with and brought to you for years. we believe that you've seen enough, and it's time now for the community and the commission to come together to fix those problems. this endeavor requires one legislation regarding definition of demolition; two, implementation; three, enforcement. the community is inviting you to join us in pushing for all three categories of those above fixes. legislation regarding definition of demolition, there should be a new definition for demolition, and it has to be clear, easily calculable, quantitative, measurable and live in both building codes. what currently exists in section 317 of the planning code is formulaic but not easily calculable. number two, implementation. whatever we've done in the past has been open to interpretation and hardly bulletproof, as prior speakers can attest