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address the locations where the residents expressed the greatest concern and also provide the ability for the rest of the community to understand the impacts of the devices. With this approach, the committee recommended that devices be installed only on Sycamore and Alisal at this time, with the understanding that if the residents on Happy Valley Road decide that the speed lumps are beneficial and would like them installed on Happy Valley Road, the City would provide the full installation cost. The Steering Committee developed the attached plan (see Attachment 1). The Plan has 7 speed lumps and 2 radar speed signs included in the design. The spacing of the devices is approximately 600 to 800 feet. The normal installation spacing for these devices is 300 to 500 feet. The Steering Committee chose to increase the spacing with the understanding that there may be slightly higher speeds between the devices than is desired, but felt that a minimum number of devices will allow residents to fully understand the benefits and drawbacks of the devices and have elected to review the need for additional devices (potentially between the proposed devices) in the future. Three of the seven speed lumps are located on Alisal Street, which is an Alameda County road. The County was involved in the process and the County design standards will be used which includes a street light adjacent to the speed lump. The attached Traffic Calming Plan was presented to the neighborhood on March 29, 2007. Residents attending the meeting provided positive comments and generally supported the Plan. It was decided at this neighborhood meeting to create and circulate petitions to gain written support for the plan. The Steering Committee circulated nine separate petitions (one for each device proposed in the plan). A strong majority support was collected by petition (see Attachment 2) from all residents within 500 feet for each of the proposed devices. All of the property owners adjacent to the traffic calming devices have signed the petitions indicating their support. The petitions did not include wording on Alisal Street of the requirement for street lighting. Alameda County requires that traffic calming devices be illuminated. Staff made follow up calls to each person who signed the petitions on Alisal Street (which is a County roadway) informing them of the need for lighting. Two residents indicated that they would not support the speed lumps if it included street lighting. Staff has contacted the residents adjacent to these speed lumps to ensure that they understood the County's requirement of a street light adjacent to the speed lumps. The adjacent residents supported the speed lumps with the street Tight. Speed lumps have two primary features. Like a parking lot speed bump, a speed lump is a rise in pavement about three inches high. Unlike one -foot wide speed bumps, speed lumps are 12 -feet wide, so the three -inch rise takes place over six feet. This results in a very smooth rolling motion as a vehicle travels over a speed lump at ideal residential street speeds of 20 to 25 mph. Speed lumps have one other unique feature having to reduce speed. To achieve this, the speed lump is installed with two grooves that are spaced 8 -feet apart. The 8 -foot spacing is centered over the middle of the Page 4 of 6