Have found that use of gasoline powered leaf blowers has markedly increased in recent years, now occuring almost every day of the week. Noise levels have not decreased, times of operation are regularly violated, and clouds of dirt, debris and noise often fill the air from early morning until late in the day. Ordinance enforcement appears lax or non-existent. Our residential Alkali Flat neighborhood is a mixture of single family homes, duplexes, fourplexes and apartments, many of which are beautifully restored Victorians. I was involved in the effort to have leafblowers banned in the 1990's, but we settled for City promises of better enforcement, quieter blowers, etc. Now these noisy bliowers are rampant again. As a professional health educator, I see this pervasive and non-compliant use of leafblowers as primarily a public heath issue. We already have many days of bad air or air "termed "Unhealthy for sensitive groups (including those with asthma, heart disease and young chiildren). The current and more persistent use of these gasoline blowers, commonly known as "dirt blowers" in our neighborhood, is dangerous to the lungs and to the health of our residential comunity. I say, ban them...which has been done in a number of California communities.