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EXHIBIT'"'" <br />Bi r t nt1 n Area (including B ioretention Swale) Maintenance Plan for <br />One Marina — Phase 1 <br />August 2011 <br />rA <br />V­ Project Address and Cross Streets <br />. 30 Bair Island Road, Redwood City, CA <br />1Z Z <br />_. <br />r`ore ten tfon areas fun c t on as soil acrd pla nt- <br />based filtration devices that remove p ollutant s <br />through a variety of physical, biological, and <br />chemical treatment processes. Those facilities <br />normally consist of a grass buffer s trip, sand bed, <br />pondrrrg area, organic layer or mulch layer, <br />planting ,soil, and plants. <br />Assessor's Parcel N.: 052-531-14 <br />Property Owner: RC Peninsula Park, LLC <br />Phone No. 303 - 371 - 9000 <br />Designated Contact: Matt Salmon <br />Phone No.:1- 453 - 0312 <br />Mailing Address :70 St, Paul Street Suite 300 <br />Deaver, CO o2 <br />The property contains 7 bioretention area( s), located as described below and as shown in <br />the attached site plan'. <br />• Bioretention Areas No. 1 and No. 2 are located along the western side of One Marina way, <br />• Bi Areas I. 3 and No. 4 are located along the eastern side of One Marina war. <br />• Bi r t nti n Areas Flo. 5 through 7 are located behind the lower retaining wall along Bair <br />Island Road. <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 nducted, are shown in <br />Table 1, <br />Table 1 <br />Routine Maintenance Activities f or Rlorete Lion Areas <br />No. <br />Maintenance Task <br />Frequency of Task <br />1 <br />Remove obstructions, debris and trash from bioretention <br />Monthly, or as needed after storm <br />area and dispose of properly. <br />events <br />Inspect bioretention area to ensure that it drains between <br />Monthly, or as needed after storm <br />storms and within five days after rainfall. <br />events <br />Inspect inlets for channels, soil exposure or other <br />Monthly, or as needed after storm <br />evidence of erosion, Clear obstructions and remove <br />events <br />sediment. <br />Remove and replace all dead and diseased veget <br />Twice a year <br />Maintain vegetation and the irrigation system. Prune and <br />Before wet season begins, or as <br />weed to keep bioretention area neat and orderly in <br />needed <br />appearance. <br />C heck that mulch is at appropriate depth (3 inches per soil <br />Monthly <br />specifications) and replenish as necessary before wet <br />season begins. <br />i Attached site plan niust niatc;h the site plan exhibit to Maintenance Agreement. <br />Page 1 <br />NDS Approved 1215107 <br />Y_Lff1NTfl $10- eMmins 5eIhibcaOLSU<Mkuatt A�T,4!m nt'EYKIB1TCt}x htjh ra_ Hi iwel_Amaj &MChccili%Ldcc <br />