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Exhibit "C" <br />Inspection & Maintenance Checklist <br />Infiltration Trench Maintenance Plan for <br />146 Roosevelt Ave <br />June 15t 2025 <br />An Infiltration trench is a long, narrow, excavated <br />trench backfilled with a stone aggregate, and lined with <br />a fifterfabric. Runoff rs stored in the void space <br />between the stones and inf<itrates through the bottom <br />and into the soil matrix. <br />Project Address and Cross Streets <br />146 Roosevelt Ave Redwood City,CA 94051 <br />Assessor's Parcel No. 053.094.140 <br />Property Owner: Dan i )g Hu Biru Zhou <br />Phone No.: (415)713-2259 <br />Designated Contact: Dancing Hu <br />Phone No.: 415 713-2259 <br />Mailing Address: 214 Cam ana Ave Dalv ritv CA 94015 <br />The property contains 2 infiltration trench(es) and Pervious Pavers located as described below and as <br />shown in the attached site plan. <br />■ infiltration Trench No.1 is located at the Western portion of the property site. <br />■ Infiltration Trench No. 2 is located at the Eastern portion of the property site. <br />■ Pervious pavers are located at the back of the property site. <br />I. Routine Maintenance Activities <br />The principal maintenance objective is to prevent sediment buildup and clogging, which reduces pollutant <br />removal efficiency and may lead to trench failure. Routine maintenance activities, and the frequency at which <br />they will be conducted, are shown in Table 1. <br />Page 1 <br />ATTY/AGR.2025.326/Danquing Hu and Biru Zhou (146 Roosevelt Ave) (Page 13 of 16) <br />