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Manufactured Stormwater Treatment Measure Maintenance Plan for <br /> Classics at Redwood City, Redwood City, CA. <br /> February 2014 <br /> Manufactured Stormwater Treatment Measures are PROPRIETARY treatment devices that tend to <br /> be installed below ground and operate using some type of proprietary filter media, hydrodynamic <br /> separation,or sedimentation and screening. Common examples of manufactured treatment <br /> measures include manufactured media filters, inlet filters or drain inserts,oil/water separators and <br /> hydrodynamic separators. In August 2004,the Regional Water BoarcJ's Executive Office wrote a <br /> letter stating that a project relying on inlet filters or oil/water separators as the sole treatment <br /> measure would be unlikely to meet the maximum extent practicable standard of the National <br /> Polutant Discharge Elimination System Permit. See the Countywide C.3 Technical Guidance <br /> (www.flowstobav.ory)for more information. <br /> Project Address:735 Brewster Ave.. 313. 321 Fuller St.. Redwood City. CA <br /> Assessor's Parcel No.: 052-331-020/120/080 <br /> Property Owner: Classics Communities. Inc. Phone No.: (650)496-4496 <br /> Designated Contact: Adam Kates Phone No.: (650)496-4496 <br /> Mailing Address: 1068 E. Meadow Circle. Palo Alto. CA 94303 <br /> The property contains 2 Manufactured Treatment Measure(s), located as described <br /> below. Manufactured Treatment Measure is to be Contech Linear - 2 Precast <br /> Storm Filter <br /> ■ Manufactured Treatment Measure (SDTD) is located in the front yard of Lot 6 facing <br /> Both treatment devices are located in landscape areas. One is located north of <br /> building 13 and the other is north-east of building 7. <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 failure of the manufactured treatment <br /> measure. Routine maintenance activities, and the frequency at which they will be <br /> conducted, are shown in Table 1. Property owner should maintain (or hire a qualified <br /> maintenance company)per the requirements shown below. <br /> Table 1 <br /> Routine MaiMenance Activities for Manufactured Treatment Measures <br /> No. Maintenance Task Frequency aF Task <br /> 1 Inspect for standing water,sediment,trash and debris. Monthly during rainy season <br /> 2 Remove sediment,trash and debris from sedimentation As needed <br /> basin,riser pipe and filter bed,using vactor truck method. <br /> Dispose of sediment,trash,filters and debris properly. <br /> 3 Ensure that manufactured treatment measure drains After major storm events and as <br /> completely within five days. needed. <br /> 4 Inspect ouUets to ensure proper drainage. Monthly during rainy season,or as <br /> needed after storm events <br /> 5 Follow manufacturer's guidelines for maintenance and As per manufacturer's specifications. <br /> cartridge replacement <br /> 6 Inspect manufactured treatmerrt measure,using the Monthly,or after large storm events, <br /> attached inspection checklist. and after r�noval of accumulated �� <br /> debris or material <br /> ATTY/AGR.2014.088/RWC 1856 755 Brewster(�If�A��a <br />