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Vegetated Swale Maintenance Plan for <br />2103 E. 14th Street, San Leandro, CA <br />July 16, 2008 <br />The property contains six (6) vegetable swales, located as described below and shown in the <br />attached site plan. <br />• Vegetated Swale No. 1 is located at near the handicap parking and next to the property <br />line N42°39'43"E. <br />• Vegetated Swale No. 2 is located at near and perpendicular to the sidewalk of E. 14tH <br />street and next to property line N42°39'43"E. <br />• Vegetated swale No. 3 is located at near the walkway and in front of units and northeast <br />of circular landscape. <br />• Vegetated swale No. 4 is located between two circular landscapes. <br />• Vegetated Swale No. 5 is located at near the circular landscape and next to property line <br />N47°16'40"E. <br />• Vegetated swale No. 6 is located at behind the unit and northwest of the Swale no.4. <br />I. Routine Maintenance Actives <br />The maintenance objectives for vegetated swales include keeping up the pollutant removal <br />efficiency of the channel by maintaining a dense, healthy vegetated cover. Routine maintenance <br />activities, and the frequency at which will be conducted, are shown in Table 1. <br />Table 1 <br />Routine Maintenance Activities for Vegetated Swales <br />No. Maintenance Task Frequency of Task <br />1 Mow turf grass to 6-inch height. Monthly, or as needed <br /> Remove grass cuttings. Avoid <br /> producing ruts when mowing <br />2 Irrigate during dry weather Monthly, or as needed <br />3 Remove obstructions and trash from Monthly, or as needed <br /> vegetated Swale <br />4 Inspect Swale to check for erosion and Twice a year: 1) one inspection should occur at <br /> sediment and debris accumulation the end of the wet season in order to plan and <br /> schedule summer maintenance, 2) the other <br /> inspection should occur after periods of heavy <br /> runoff. <br />5 Remove sediment accumulating near As needed <br /> culverts and in channels should be <br /> removed when it builds up to 75 <br /> millimeters (3 inches) at any spot, or if <br /> it covers the vegetation. <br />6 Inspect Swale using the attached Monthly, or as needed <br /> inspection checklist. <br />Exhibit C -Vegetable Swale Maintenance Plan -Page 1 <br />