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7.2.B. - Page 25 <br /> Bioretention Area Maintenance Plan for <br /> Courtyard by Marriott <br /> Date: <br /> V '_ 7' ° --,' (.4 Project Address and Cross Streets <br /> ,_° g - -- Bair Island Road at One Marina Way <br /> . Assessor's Parcel No 052 - 531 -130 <br /> ° > # � A o ; Property Owner: Redwood City Hotels, LLC <br /> ' * 4 r' Phone No 864 - 596 -8930 <br /> - - I Designated Contact: <br /> _, r ‘. '; Phone No.. <br /> Bioretention areas function as soil and plant - <br /> based filtration devices that remove pollutants Mailing Address: 100 Dunbar Street, Suite 402 <br /> through a variety of physical, biological, and <br /> chemical treatment processes. These facilities Spartanburg, SC 29303 <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 8 bioretention areas (7 new and 1 existing, to remain) located as <br /> described below and as shown in the attached site plan <br /> Bioretention Areas are located as follows: <br /> • 1- near SW building corner & along S building wall <br /> • 2- along S building wall <br /> • 3- along S building wall <br /> • 4- near S driveway approach onto One Marina Way <br /> • "S "- along One Marina Way frontage <br /> • "M "- along One Marina Way frontage <br /> • "S "- along One Marina Way frontage <br /> • "N "- along One Marina Way frontage <br /> • "EX "- along One Marina Way frontage <br /> 1. 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 Bioretention Areas <br /> No. Maintenance Task Frequency of Task <br /> 1 Remove obstructions, debris and trash from bloretention 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 /> 1 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 11/30/11 <br /> • nama+me.. AAANCRD.ma60c 03.:A,}..s ∎umrin A,rceu,a4ESaiai: C2 .Biu.eteRw,614« <br /> ATTY /AGR.600 Bair Island Road /Courtyard Marriot <br />