RecDoc 2021-174215 -STMMA_101 Westport Harbor_

Browse Search

f}ioretsntion Area' Maintenance Plan for Westpoint Marina— Phase 3 aioretendon areas runck. as sal and plane - based Ntramn dames that remove polhitants through a variety of physical bbbgicaland chemical Imatment processes, These facilities normally consist as grass buffer sfdp, sand bed, pon0mg ama, mganrc layer or mulch layer, plantIngsog,, andplants. 10/10/21 Project Address and Cross Streets: 101 Westpoint Harbor Drive, Redwood Gity, CA 94063-5590 Assessors Parcel No.: 054-300-680 Property Owner: Westpoint Manna, LLC Phone No.: (650) 701-0545 Designated Contact: Mark Sanders Phone No.: (650) 701-0545 Mailing Address: 101 Westpoint Harbor Drive, Redwood City, CA 94063-5590 The property contains one 13101[etentim area(s), located as described below and as shown in the attached site plana. • Bloretention Area A is located along the northerly edge of the driveway at the entrance. • Bloretention Area B is located along the northerly edge of the driveway. • Bloretention Area C is located along the northerly edge of the driveway. • Bioretention Area D is located along the northerly edge of the driveway. • Bioretention Area E is located along the northerly edge of the driveway. • Bioretention Area F is located along the northerly edge of the driveway. • Bioretention Area G is located on the northerly side of the cul-de-sac. • Bioretention Area H is located to the west of the Yacht Club and Restaurant building. 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 aioorbadion Areas No. Mdntenanee Task Frequency of Task 1 Remove obstructions, debris and bash from bloretention Monthly, or as needed after storm area and dispose of pmWy, events 2 Inspect 6iormantion area to ensure that it drain between Monthly, or as needed after storm storms and within Ise days after rainfall. events 3 Inspect hilats for channels, sail exposure or other Monthly, or as needed after storm s w lerwe of erosion. Clear obstructions and remove events sediment. Bioretention arras include linear aearmem measraes designed m filter water through biutresunent soils A bioretention area that has no waterproof liner heneatb it and has a raised underdmin in the turderlymg rock layer to promote infiltration, as shown is section 6.1 of the C.3 Technical Guidance, may also be c. lhd a "Nomfiltration area'. 2 Attached site plan must nWeh the site plat exhibit to Maintenance Agreement, Page 1 Ravised l Men I REV: 11-05-2021 VR ATTY/AGR,2021,279/Westpoint Harbor LLC (Page 17 of 20)