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Media Filter Maintenance Plan for <br />610 Walnut <br />Date: 5.28.2019 <br />MODIFIED DELAWARE SAND FILTER <br />Non-proprietary media <br />filters are usually two - <br />chambered, including a <br />pretreatment settling <br />basin and a filter bed filled <br />with sand or other <br />absorptive filtering media. <br />As storm water flows into <br />the first chamber, large <br />particles settle out, and <br />then finer particles and <br />other pollutants are <br />removed as stormwater <br />flows through the filtering <br />media in the second <br />chamber. <br />Project Address and Cross Streets: 610 Walnut Street, Cross Street: Bradford Street <br />Assessor's Parcel No.: 052-377-100 <br />Property Owner: Windy Hill Property Ventures <br />Phone No.: 650.248.3584 <br />Designated Contact: Mike Field <br />Phone No. 650.248.3584 <br />Mailing Address 530 Emerson Street. Suite 150, Palo Alto, CA 94301 <br />The property contains one (1) media filter, located as described below. <br />• Storm Filter TCM -1 is located at the northeast corner of the building on the Bradford <br />Street frontage in the sidewalk. <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 Media Filter failure. Routine <br />maintenance activities, and the frequency at which they will be conducted, are shown in <br />Table 1. <br />K:--1616610We1ne1R—.d W—Op 6.. \I.nualUledie Filler NL.i puna R. . <br />ATTY/AGR.2020.075/VVindy Hill PV Five CM, LLC (Page 17 of 21) <br />Page 1 <br />