Recdoc 2023-007351 955 Woodside - Laserfiche WebLink

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Bioretention Area Maintenance Plan for 955 Woodside Rd. 7/28/22 Project Address and Cross Streets: 955 Woodside Road, Redwood City, CA Assessor's Parcel No.: 059-240-670 Property Owner: 955 Woodside Rd., LLC Phone No.: (206) 931-4169 Designated Contact: Sarnir Sharma Phone No.. (206) 931-4169 Mailing Address: 237 Castro St. Suite 224 Mountain View CA 94040 The property contains 3 bioretention area(s), located as described below and as shown in the attached site plan'. Bioretention Area No. 1 is located North-west of subject property Bioretention Area No. 2 is located South-west of subject property Bioretention Area No. 3 is located East of subject property I. Routine Maintenance Activities The principal maintenance objective is to prevent sediment buildup and clogging, which reduces pollutant removal efficiency and may lead to bioretention area failure. Routine maintenance activities, and the frequency at which they will be conducted, are shown in Table 1. Table 1 Routine Maintenance Activities for Bioretention Areas No, Maintenance Task Frequency of Task 1 Remove obstructions, weeds, debris and trash from Quarterly, or as needed after storm bioretention area and its inlets and outlets; and dispose of events properly. 2 Inspect bioretention area for standing water, If standing Quarterly, or as needed after storm water does not drain within 2-3 days, till and replace the events surface biotreatment soil with the approved soil mix and replant 3 Check underdrains for clogging. Use the cleanout riser to Quarterly, or as needed after storm clean any clogged underdrains. events 4 Maintain the irrigation system and ensure that plants are Quarterly receiving the correct amount of water (if applicable) - 5 Ensure that the vegetation is healthy and dense enough Annually, before the wet season to provide filtering and protect soils from erosion. Prune begins and weed the bioretention area. Remove and/or replace any dead plants. 6 Use compost and other natural soil amendments and Annually, before the wet season fertilizers instead of synthetic fertilizers, especially if the begins system uses an underdrain. Annually, before the wet season 7 Check that mulch is at appropriate depth (2 - 3 inches per soil specifications) and replenish as necessary before wet begins season begins. It is recommended that 2" — 3" of arbor mulch be reapplied every year. 8 Inspect the energy dissipation at the inlet to ensure it is Annually, before the wet season functioning adequately, and that there is no scour of the begins surface mulch Remove accumulated sediment. ' Attached site plan must match the site plan exhibit to Maintenance Agreement, Page 1 Al-TY/AGR.2022.403/955 Woodside Rd, LLC (Page 16 of 18)