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Exhibit C <br />Flow -Through Planter Maintenance Plan for <br />275 Blomquist Street <br />3/18/2022 <br />Project Address and Cross Streets <br />275 Blomquist Street <br />Redwood City, CA <br />Cross Street: Maple Street <br />Assessor's Parcel No. 052-398-010 <br />Property Owner: County of San Mateo <br />Phone No.: 650-421-1765 <br />Designated Contact: Jasmine Gao <br />Phone No.: 650-421-1765 <br />Flow-through planters are designed to treat and Mailing Address: <br />temporarily detain runoff without allowing seepage 555 County Center <br />Into the underlying soil. They typically receive runoff Redwood City, CA 94063 <br />via downspouts leading from the roofs of adjacent <br />buildings. <br />The property contains 4 flow-through planters, located as described below and as shown in the attached site <br />plan: <br />• Flow -Through Planter No. 2 is located at the northwest corner of the site, near the Maple Street <br />driveway. <br />• Flow -Through Planter No. 3 is located at the northeast corner of the site, across the parking lot <br />from the dining hall. <br />• Flow -Through Planter No.4 is located on the east side of the site <br />Flow -Through Planter No. 5 is located at the southeast corner of the site, near the Blomquist Street <br />driveway. <br />I. Routine Maintenance Activities <br />The principal maintenance objectives are to ensure that water flows unimpeded into the flow- <br />through planter and landscaping remains attractive in appearance. Table 1 shows the routine <br />maintenance activities, and the frequency at which they will be conducted. <br />Table 1 <br />Routine Maintenance Activities for Flow -Through Planters <br />No. <br />Maintenance Task <br />Frequency of Task <br />1 <br />Evaluate health of trees and groundcover. Remove and replace all dead and <br />Twice a year <br />diseased vegetation. <br />2 <br />Maintain vegetation and the irrigation system. Prune and weed to keep flow- <br />As needed <br />through planter neat and orderly in appearance. <br />Page 1 <br />ATTY/AGR.2022.133/County of San Mateo (275 Blomquist - County Navigation Center) (Page 14 of 20) <br />Updated 1/1/20 <br />