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6.1.D. - Page 33 <br /> 33 <br /> Bioretention Areal Maintenance Plan for <br /> Burger King Restaurant#2443 <br /> 11-16-2015 <br /> 1 Address and Cross Streets: 575 El <br /> ° 1 Camino Real, Redwood City, CA 94063 <br /> Assessor's Parcel No 044-17-019 <br /> Property Owner: C&H Holdings LLC <br /> � ' <br /> 41.1 ? Phone No 650-637-1288 <br /> w Designated Contact Christopher Hsiung <br /> t"47 tt �x�gu'r Phone No 650-773-2909 <br /> t.ekt"=; <br /> Bioretention areas function as soil and plant- Mailing Address: 5 Estates Dr, <br /> based filtration devices that remove pollutants <br /> through a variety of physical,biological,and Millbrae, CA 94030 I [ <br /> chemical treatment processes. These facilities <br /> normally consist of a grass buffer strip,sand bed, <br /> ponding area,organic layer or mulch layer, <br /> planting soil, and plants. <br /> The property contains two bioretention area(s), located as described below and as shown <br /> in the attached site plane, <br /> • Bioretention Area No. 1 is located at the northeast corner of the project site. <br /> ▪ Bioretention Area No. 2 is located approximately 50' south of Bioretention Area No. 1 <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 Maintenance Activities for Bloretention Areas <br /> No, Maintenance Task Frequency of Task <br /> 1 Remove obstructions,debris and trash from bloretentlon Monthly,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 needed after storm <br /> storms and within five days after rainfall. events <br /> 3 Inspect inlets for channels,soil exposure or other Monthly,or as needed after storm <br /> evidence of erosion.Clear obstructions and remove events <br /> sediment. <br /> 4 Remove and replace all dead and diseased vegetation, Twice a year <br /> 5 Maintain vegetation and the irrigation system.Prune and Before wet season begins,or as <br /> weed to keep bioretention area neat and orderly in needed <br /> appearance. <br /> k Bioretention areas include linear treatment measures designed to filter water through biotreatment soils.A bioretention <br /> area that has no waterproof liner beneath it and has a raised underdrain in the underlying rock layer to promote <br /> infiltration,as shown in Section 6.1 of the C.3 Technical Guidance,may also be called a"bioinfiltration area". <br /> 2 Attached site plan must match the site plan exhibit to Maintenance Agreement. <br /> Page 1 Revised 1lla0ll1 <br /> e:ni n.qn R&,O,l nK9w R ITL1Ca4ram z Raraide(4IR f"f aan.9we'nau Wreaked..{1-RU(bl-E7aar.u4t.tie..n 11.4". <br /> ATTY/AGR.2016.255/C&H Holding Company,LLC-STMMA <br />