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Operations and Maintenance Guidelines for Self -Retaining Areas <br />Routine Maintenance Activities <br />The principal maintenance objective is to prevent sediment buildup, which reduces <br />pollutaa ren-ravvaP -eft, and 'rrra-y lead tosal-reta r rrg­ a+"e~ar f~aiture. UaintabT a <br />three-inch depression at this area. Routine maintenance activities, and the frequency at <br />wNch they wic ll .be _wnslucted are shave. n. in. Table. 1._. <br />Table 1 <br />Routine Maintenance Activities for Self -Retaining Areas <br />No. <br />Maintenance Task <br />Frequency of Task <br />1 <br />Remove obstructions, debris and trash from self -retaining <br />Quarterly, or as needed after storm <br />area and dispose of properly. <br />events <br />2 <br />Remove and replace all dead and diseased vegetation. <br />Twice a year <br />3 <br />Maintain vegetation and the irrigation system. Prune and <br />Before wet season begins, or as <br />weed to , sew nsst-anvil W Srly !R <br />nxeedd, d <br />appearance. <br />Prohibitions <br />The use of pesticides and quick release fertilizers shall be minimized, and the principles of <br />integrated pest management (IPM') followed: <br />1. Employ non -chemical controls (biological, physical and cultural controls) before using <br />nhP.m plc to treat .a pact .n..rn.blem_ <br />2. Prune plants properly and at the appropriate time of year. <br />3. Provide adequate irrigation for landscape plants. Do not over water. <br />4. Limit fertilizer use unless soil testing indicates a deficiency. Slow -release or organic <br />fertilizer is preferable. Check with municipality for specific requirements. <br />5 .n..,..,a.+.arit.rrall sh,�.,.ld . almot i..,......._;......1-10..... t-ar,..,..4..or.,..-....:^.�mis tiv i.....,5 acti......,..-air <br />�. r cap wi ni �i ai wu�u a'JUiu .� iai � i m iy i ivi riai yci vi yai n�i i i�,vi 'i icya�ivcry ai ic�u� �y au <br />and water quality and public health. Apply chemical controls only when monitoring <br />indicates thatpreventat.ive and. non -chemical methods. are not keeping, nests below <br />acceptable levels. When pesticides are required, apply the least toxic and the least <br />persistent pesticide that will provide adequate pest control. Do not apply pesticides <br />on a prescheduled basis. <br />6. Sweep up spilled fertilizer and pesticides. Do not wash away or bury such spills. <br />7. Dcnotvver apply pesnidp. Sfay only where <br />b1h tniffysta}fln» Gt nVJrU— <br />IY 0"M <br />manufacturer's instructions for mixing and applying materials. <br />8. Only licensed, trained ,pesticide applicators shall apply _pesticides. <br />9. Apply pesticides at the appropriate time to maximize their effectiveness and minimize <br />the likelihood of discharging pesticides into runoff. With the exception of pre - <br />emergent pesticides, avoid application if rain is expected. <br />10. Unwanted/unused pesticides shall be disposed as hazardous waste. <br />Standing water shall not remain in the treatment measures for more than five days, to prevent <br />mosquito generation. Should any mosquito issues arise, contact the Santa Clara County Vector <br />Control District (DIV), as needed for assistance. Mosquito larvicides shall be applied only when <br />absolutely necessary, as indicated by the DIV, and then only by a licensed professional or <br />wattractar. Contact irifiol �efoin for aril -rs pnovid&d allaw. <br />Maintenance Log: <br />Keep a log of all inspections and maintenance performed on the bioretention areas. Keep this <br />log on -site. <br />