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7.1.H. - Page 23 Exhibit C <br /> Bioretention Areal Maintenance Plan for <br /> Maple Street Correctional Center <br /> March 27, 2014 <br /> Project Address and Cross Streets: <br /> r x 1300 Maple St. Redwood City. CA <br /> '=' (cross street: Blomquist St) <br /> Assessor's Parcel No: <br /> L _ -A Property Owner: <br /> ' - "� San Mateo Co. Sheriffs Office <br /> Phone No: (650) 216-7676 <br /> . Designated Contact: Sam Lin <br /> Phone No: (650) 632-4043 <br /> Mailing Address: <br /> i <" <br /> - San Mateo Co. Sheriffs Office <br /> Bioretention areas function as soil and plant- 400 County Center <br /> based filtration devices that remove pollutants Redwood City, CA 94063 <br /> through a variety of physical, biological, and <br /> chemical treatment processes. These facilities <br /> normally consist of a grass buffer strip, sand bed, <br /> pending area, organic layer or mulch layer, <br /> planting soil, and plants. <br /> The property contains 11 bioretention area(s), located as described below and as shown in <br /> the attached site plane. <br /> • Bioretention Area No. A is located at north side of the project on Blomquist Street. <br /> • Bioretention Area No. B is located at northwest corner of the project at the intersection of <br /> Blomquist and Maple Street. <br /> • Bioretention Area No. C is located at west side of project on Maple Street. <br /> • Bioretention Area No. D is located at southwest corner of the project on Maple Street. <br /> • Bioretention Area No. E is located in the southern parking area on the west side of the <br /> parking lot and is oval in shape. <br /> • Bioretention Area No. El is located in the southern parking area on the west side of the <br /> parking lot and is rectangular in shape. <br /> • Bioretention Area No. E2 is located in the southern parking area on the west side of the <br /> parking lot, south of Area El and is rectangular in shape. <br /> • Bioretention Area No. F is located in the southern parking area on the east side of the <br /> parking. <br /> • Bioretention Area No. G is located east of the southern parking area. <br /> • Bioretention Area No. H is located east of the southern parking area, in the southwest corner <br /> of the bus turn-around circle. <br /> • Bioretention Area No. T is located in the north parking area to the west of the proposed <br /> building just north of the building main entrance. <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 bioretention area failure. Routine <br /> maintenance activities, and the frequency at which they will be conducted, are shown in <br /> Table 1. <br /> l 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"bioinfltration area". <br /> 2 Attached site plan must match the site plan exhibit to Maintenance Agreement. <br /> Bioretention Area Maintenance Plan Page 1 <br />