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<br />". Impact Due "To Limited, Sunli ght Access
<br />Like clelan air and clean water, there are abundant clinical and scientific evidences that
<br />adequate access to sunlight is vital for human well-being. 15 Particularly, adequate.
<br />exposure to sunlight is critical for vitam.1n D proiduc,ti,on and. for children's growth and
<br />brain devielopirrietit.1 16 Lack of access to sunlight inlay induce or aggravate various mental
<br />illnesses including Seasonal Affective. Disorder (SAD) and depression. 17, " 8 Lambert et al
<br />(2003) reported to the American Journal of Psychiatry that the hours of prevalent sunlight
<br />exposure has important relationship with suicide rate..' 9
<br />Due to the height and the width of the proposed structure arid its proximity to single
<br />family homes to, its north border, our study shows that substantial part of solar access by
<br />the nearby conimunit will be blocked by the proposed structure. More precisely, solar
<br />y precisely,
<br />altitude at any polint of a year below 24.501 will obstruct the sunlight to at least some part
<br />of the northbound single-family homes. According to the sun path diagram for Roseville,
<br />N4N (shown. in Appendix D) 20 , this represents about 30 β 40% of the entire solar access
<br />window throughout a year. The problem becomes more critical during the winter season,,
<br />Then. sun. altitude is lower and access to sunlight becomes more limited.
<br />The proposer did provide a winter shade study, which suggested that currently existing
<br />trees creates comparable- shades due to their heights. However, the study by the proposer
<br />is highly misleading due to two reasons: First, the study assumed that the existing trees of
<br />the development site, which are in fact all broadleaf trees, will block sunlight during. the
<br />winter as if they are solid cylinders. However,, there is no impact by these broadleaf trees
<br />after teafs, are gone during the winter, and the north bound single-home residents can
<br />even see the warehouses across the proposed development site and the wetland during the
<br />Winter.. Second, the study only considered when sun altitude is high around noon. The
<br />solar access impact takes place when sun altitude is low, and the study should
<br />appropriately capture such periods of time.
<br />Genuis, S. J. "Keeping )(our sunny -side up.- How sunlight affects health and well-being" Canadian Family
<br />Physician. 10; 52(4): 422-423 )', 2006
<br />16 "
<br />Gavin Larnbert ell al, Effect of sunlight and season on serotonin turnover in the brain ", The Lancet , Volume
<br />3 1
<br />, Issue 9348 y 1,84 β 1,842)1 1,990.
<br />"Increased Suicide Rate in the Middle - ed and Its Association With Hours of Sunliaht"'.
<br />Gavin Lambert elt, a/., 9
<br />Arnieri can Journal of Psychiatry 160:79-3L795.1 2003 ).
<br />18 Arnistroncy Di. J. iet al, "Vitarnin D deficiency is associated with anxiety and depression in fibrornyalgia" Clinical
<br />Rheurnatiology, Vollume , Number 4, 551 β 554, 2007,
<br />191 Gavin Lambert ell' all., 2003. Ibid,
<br />"'O'Solar access, limited by the proposed structure is studied and presented before the Roseville Plannino.
<br />i z7P
<br />Cornmissioners on June 6 7. 2007,1 where the concerns of nearby neighbors over the proposal are also presented. As a
<br />result, the Planning Commission recommended a denial with βto-1 vote to the proposed plan.,
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