3726 BROADWAY BASE FILE 2018-01-02 MF Import

10. The pesticidc shall be applicd according to labcl directions. Yesticides should bc mixed, anc equipmcnt cicaned, in an arca whcre accidental spills H•ill not enter surface or groundµ�aters,and «�ill not � contaminate the soil. Rinseate from equipment cicanine and/or triple-rinsing of pesticide containers should be used as product. _ 1 l. The application equipment used should be capable of immediate shutoff in the event of an emergenc}�. 42.2.11 BhII'S2,p0 MAINTENANCE OF STORM DRAINAGE FACII.ITIES Without proper maintennnce of stormwater facilitics,sediment and other debris can quickly clug facilities, making them useless. Rchabilitatiun of such facilities is difficult and cxpensive. Polluted water and sediments rcmovcd during ihe cleaning operation must ba properly disposed of. Stortn�'ater treatment facilities shall be maini:�ined according to criteria or procedures oresented m Section 3-1. 4- 3A'D'S2.lU LOCATING ILLICIT CONNECTIONS TO STORM DRAINS Illicit ccnn sanitary or process wastewater drains located in a building that discharge to the storm drain, racher than ' ary sewer. An allowable exception is noncontact cooling water,which may be discharged to a storm r Experience has shown that illicit com very common, even in buildings constructed as late as the 1960's. Building owners arc scldom nware in fines sre improperly connected since their sewer bills are tied to watcr use. Redevclopment projects shall check existing buildings for illicit conn iq�can be contacted for additional information. 4-2.2.13 BNII'S2.20 PRNATE STREET AND PARHING LOT SV1'EEPING Private stteeUparking lot sweeping should bc implemented for sitcs with high impervious cover and to improve —" runoff quality from ea�sting devclopment sites. Sweeping rcCcrs to the rcmoval of accumulated dust,dirt and debris ftom impervious surfaces with the use of rr.echanical cleaners. Sites which exhibit high levels of sediment on impervious surfaces should also implement uggressivc source control measures to prevent accumulation of such sediments. While traditional strecdparking lot swecping has shown limited cffectivencss at improving water qualih•there is evidence that it can bc efiectivc when better equipment and operating proccdures are used. The most efficient types of sweepers, such as regencrative air cicaners or vacuum s��eepers, should be used. • METHODS TO MAXIMIZE SWEEPIIQG EFFICIENCY 1. Maltiple passes should bc mude. Generally speaking,one pass can remove 50%of available solids,two passes provide 75%removal. 2. The frequcncy of sweeping private sveeu and parking areas with high pollutant loadings should be increascd,particularly m industrial areas. Weekh�cleaning of private streets will provide more removal efficiency; less frequent sweeping will uccomplish little. 3. Vacuum or resenerative air sweepers ure the most effective in removing the small particles most associated with pollutants. i 4. Operators should be trained to attain maximum swecper perfortnance. Sweeper speed,brush adjustment and rotation rate,sweeping pattcm, maneuvering around parked vehicles, interim storage and disposal methods all affect pollutant removal. 4-2-16