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.�` EXHIBIT C <br /> Bioretention Area (including Bioretention Swalej Maintenance Plan for <br /> Bair Island Road—Phase 2 <br /> February 2013 <br /> ; <br /> Project Address and Cross Streets <br /> a+l� ���� Bair Island Road Redwood Citv CA <br /> �.�. - <br /> k�� a�,�.,. <br /> ��� ���� � � � ����� Assessor's Parcel No.: 052-531-140 <br /> Property Owner: RC Peninsula Park, LLC <br /> Phone No.: 303-371-9000 <br /> Designated Contact: Matt Salmon <br /> Phone No.:510-453-0312 <br /> Bioretentia�areas/unction as soil and p/ant- <br /> based�ttrafion devices that iemove pollutants Mailing Address:270 St. Paul Street. Suite 300 <br /> through a variety ol physical,bio/ogical,and <br /> chemical treatment processes. Theae facilrties Denver. CO 80206 <br /> normally consist ol a grass bufler strip,sand bed, <br /> ponding area,organic layer or mu/ch layer, <br /> p/anting soil,and p/ants. <br /> The property contains 10 bioretention area(s), located as shown in the attached site plan'. <br /> I. Routine Maintenance Activities <br /> The principal maintenance objective is to prevent sediment buildup and clogging, which <br /> reduces pollutant removal efficiency and may lead to bioretention area failure. Routine <br /> maintenance activities, and the frequency at which they will be conducted, are shown in <br /> Table 1. <br /> Table 1 <br /> Routine Malntenance Activitles for Bioretention Areas <br /> No. Malntenance Task Froquency of Task <br /> 1 Remove obstructions,debris and trash from bioretention AAonthly,or as needed after storm <br /> area and dispose of properly. events <br /> 2 Inspect bioretention area to ensure that it drains between Monthly,or as�eeded aRer storm <br /> storms and within five days after rainfall. events <br /> 3 Inspect inlets for channels,soq exposure w other Monthly,or as needed after storm <br /> evidence of erosion.Clear obstructions and remove events <br /> sediment. <br /> 4 Remove and replace all desd and diaeased vegetation. Twice a year <br /> 5 Maintain vepetation end the irriyation aystem.Prune�nd Before wet aeason begins,or ss <br /> weed to keep bioretention area neat and orderly in needed <br /> appearance. <br /> 6 Check that mu�h is at appropriate depth(3 inches per soil Monthly <br /> speciflcatlons)�rxi replenish as necessary before wet <br /> aeason beflins. <br /> 7 Inspect bioretention area using the attached inspection Monthly,or siter large atorm events, <br /> checklist. and after removal of accumulated <br /> debris or material <br /> �Attached site plan must match the site plan ezhibit to Maintenance Agreement. <br /> �:�.�����...:�.,....�....,��b�„a,n„�: Pa9e 1 NDS Approved 12/5/07 <br /> �e...u�...r��e�r�rr c o..�.:.d.a�u.w o�..ak <br />