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7A � ,■�� .. Page 25 Community Development Services Telephone: (b50) 780-7234 1017 MiddlefieId Road �edy�ood Facsimile: {650} 780-0128 P.O. Box 391 TDD: {650) 780-0129 Redwood City,CA 94064 �� Califarnie Email: planning@redwaodcity.org u iounde��fl7 t,�-• -: �� --,�_ . Website: www_redwoodcity.org g May 23, 2006 Irene Bender 111 Nevada Street Redwood City, CA 94062 RE: Solar Energy System for 111 Nevada Dear Ms. Bender: Thank you for meeting with John LaTorra, Gordon Mann, and me yesterday afternoon to review your proposed solar instaIlation and tree removal permit application. John is our Chief Building Official and Gordon is Superintendent of Public Works and our City Arborist. Per your voice mail message to me following aur discussion, you asked that the speci�c details related to our request for additionaE infarmation be summarized for you in writing. That is the purpose of this letter and these iterns are provided below so that you may farvvard them to your solar campany. 1. Solar Panel Locafion Opfions: We befieve that there may be at least three possible locations for a successful solar installation. Each Iocation probably requires reasonable means, such as a rack, to improve and optimize panel orientation. The locations that we have identified include your preferred aIternative and are summarized below: a) Applicant's Preferred Location: Southwest (front) side of lower roof. b) Upper Roof: Southeast side of upper roof volume. This locatinn assumes no relocation of vents, but refacation of non-permanent structures, such as antennas. We believe from ;r��;r cimens'soned d;a�,ving of th;s ar�a, that �t 4�ast 18 pane4s ::�i!! �±:n tk;i� !oc�tien if an antenna is moved. This is the same number of paneis as was shawn to us in your un-scalsd diagrammatic drawing of an 18-panel system in yaur Preferred Location. It also equates 90°/a of what you naw seek, which you have told us is a 20-panel system. c) Rear Side of Lower Roof: This location could be created through some structural support and/or rack system over the existing roof. You have stated to us that a significant amount of sun comes in through the skyiighf on this same roof plain. Thus, we anticipate that with a rack, a small 18-2Q-panel system could be quite effective on this side of the home. d) Alternate or Combination Locations: Your so(ar contractor may determine another superior option or combinatian of the above locations as a better alternative and we would welcome any new ideas of that nature. 2. Solar Access Analysis: Please show the solar access "window" for each lacation. As previously stated, each location should be designed to optimize the instaliation through reasonable means, such as racks. We are looking for technical data ta svaluate the locations. Thus, we would assume the analysis would focus on the peak hours for solar collection, between 1�:�0 AM— 2:00 PM, for each location and would alsa include data related to seasonal differences in the sun's orientation. If yaur sofar contractor uses an altemate accepfed industry standard, then piease have him discuss it with us to confirm the method before he stacts.