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Elk River Library Elk River Library <br />1/18/2008 <br />Construction Application <br />Light Pollution Reduction Credit 8-Version 2.2 <br />m p <br />v ~ <br />~ ~ <br />ro rD~ <br />a a <br />3 0 <br />1 0 <br />Design Application 9/20/2007 <br />The LEED Submittal Template declares that the project's lighting has been designed according to the <br />requirements of the credit. However, none of the referenced supporting documentation (E101 Electrical Site <br />Plan, E201 Electrical Site Plan, and E501 Electrical Site Plan), has been included in the submission. In addition, <br />the required narrative states that zero light trespass was achieved at the property boundary and that the lighting <br />analysis was performed with a Visual Basic program. The narrative however, is not specific on the horizontal and <br />vertical illumination levels at and beyond the property boundary. <br />TECHNICAL ADVICE: Please provide the drawings identified on the LEED Submittal Template. Include a detailed <br />narrative that is specific to the analysis program, methods and procedures used to determine the exterior <br />illumination values. It would also be helpful if the applicant could provide a photometric site plan where the <br />point-by-point illumination values extend at least 15 feet beyond the property boundary. <br />Design Application <br />11 /26/2007 <br />The applicant provided a photometric site plan and electrical floor plan drawings to demonstrate compliance <br />with the credit requirements. However, the LEED Submittal Template indicates that the building facade / <br />landscape lighting actual lighting power density (LPD) is not in compliance with the allowable LPD. Further, the <br />photometric site plan illustrates that foot candle values at the property line exceed the allowable levels <br />permitted for the environmental zone identified. This credit can not therefore be awarded. <br />Construction Application 2/3/2009 <br />Water Efficient Landscaping Credit 1.1-1.2-Version 2.2 <br />Design Application 9/20/2007 <br />The LEED Submittal Template states that potable water consumption for landscape irrigation has been reduced <br />by at least 50%. An irrigation plan was provided. However, it is unclear from the narrative what water use <br />calculation methodology was used to determine the percent savings. <br />TECHNICAL ADVICE: Please provide calculations according to the steps identified in the LEED-NC v2.2 Reference <br />Guide. See pages 118-122 for guidance. Please note, it would be helpful to include tabulated calculations in the <br />format identified in Tables 3 and 4 on page 122 of the Reference Guide. <br />Design Application <br />11/26/2007 <br />The applicant provided calculations demonstrating that potable water consumption for landscape irrigation has <br />been reduced by at least 50%. <br />Page 5 of 13 <br />