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6.3.A. - Page 60 <br /> Manufactured Storm Water Treatment Measure Maintenance Plan for <br /> Winslow Street development <br /> 888 Hamilton Street &840 Middlefield Road <br /> Project Address&Cross Streets: <br /> 815 Hamilton Street&840 Middlefield Road, <br /> Redwood City, CA 94063 <br /> Assessor's Parcel No.: 052-365-060, -080, -090, -100 <br /> Property Owner: Hamilton &Winslow Properties, LLC <br /> Phone No.: (650)364-4933 <br /> Designated Contact: Robert Dean <br /> Mailing Address: 2055 Woodside Road, Suite 2500 <br /> Redwood City, CA 94061 <br /> The property contains two (2)treatment devices and one(1)cistern located as described below and <br /> as shown in the attached site plan: <br /> Treatment Vault is located within the lower level of the garage on Hamilton Street. <br /> ■ Detention Vault is also located within the lower level of the garage on Hamilton Street. <br /> 1. Routine Maintenance Activities <br /> The principal maintenance objectives are to ensure that water flows unimpeded into the flow-through <br /> planter and landscaping remains attractive in appearance. Table 1 shows the routine maintenance <br /> activities, and the frequency at which they will be conducted. In addition, <br /> Table 1 <br /> Routine Maintenance Activities for Treatment Devices <br /> No. Maintenance Task Frequency of Task <br /> 1 Remove accumulated sediment,litter,and debris from KriStar Media Filter Before wet season and as <br /> and dispose of properly. Confirm that no clogging will occur and that the necessary <br /> treatment device will drain per design standards. <br /> 2 Inspect KriStar Perk Filter Cartidges to ensure that there are no clogs. Test Monthly during the wet season, <br /> with garden hose to confirm that the filters will drain per design standards. and as needed after storm <br /> events <br /> 3 Inspect podium drains,roof drains,and sheet flow from paved areas to Monthly during the wet season, <br /> ensure flow to KriStar Media Filters Is unimpeded. Remove debris and repair and as needed after storm <br /> damaged pipes.Check splash blocks or rocks and repair,replace,and events <br /> replenish as necessary, <br /> 4 Inspect overflow pipe to ensure that it will safely convey excess flows to Before the wet season,and as <br /> storm drain. Repair or replace any damaged or disconnected piping. necessary <br /> 5 Inspect KriStar Media Filter to ensure that manhole is structurally sound(no Annually <br /> cracks or leaks). Repair as necessary. <br /> 6 Inspect KriStar Media Filter using the attached inspection checklist for Level Per manufacturer's <br /> 1,Level 2,and Level 3 inspections(see attached KriStar FloGard Perk Filter recommendations(attached) <br /> System 0&M Manual) <br /> 7 Remove accumulated sediment,litter,and debris from KriStar Media Filter Before wet season and as <br /> and dispose of properly. Confirm that flow is directed to pump. necessary <br /> Page 1 <br /> ATTYIAGR.2015.2261Hamilton&Winslow Properties, LLC <br />