3726 BROADWAY BASE FILE 2018-01-02 MF Import

.2.7 I3MP B1.60 OUTSIDE STOItAGE OF Kn\'1' b1AT'GRIw1.S. BY-PRODUCTS OR FITrISHED IIU�:TS(SOLID MATEityALS) Tliis covers solid materiats such as: - Gr and,topsoil, compost, logs, sa�+dust, �sood chips - Lumber er building matcrials: - Concretc and oducts. The business shall select one of t owing practices appropriatc to the t�pe of material: - Duild a covered,paved arca for 'e of the maten<d, or. - Place temporary plastic sheeting over aterial or: - Pave.the area and install a drainagc system t cct st�rm�iatcr for trcatment. 7'rcat the storm�sater per the requirements of Section 1-3. Notc: If re'ectcd as halt is tem oraril �stored on-sitc bcfore I it shall be covcrcd. With Uption #3, the paved area shall be sloped in a manner that min the pooling of water on the sii:.. particularl�•with materials that may leach pollutants into stormu�atcr an ound w•atcr such as compost, lo�s. and wood chips. A minimum slope of 1.5 Fercent is recommcndcd. The a 11 be designed to prevcnt thc run-on of uncontaminated stormwatcr from adjacent areas as well as runoff o w•atcr from the stockpile area. The stortn drainage system shall be designed to minimize the use of catchbasins in the i of the storage area, as catcn basins tend to rapidly fill with the manufacturing material. Rather,the area shoul ' ed to drain s�rmu�atcr to the perimeter�+�here it can bc collected,or to internal drainage "alley�.��ays" µ�he ial is not stoc kp i led. BNII'S1.70 OUTSIDE MANUFACTURING ACTIVTITES 'This B lies to tliose businesses identified in Section 4-1 that pl:n to or currently carry out manufacturing or other po polluting activities in an area exposed to precipit�tion. The strateg�es prescNed below shall bc used first, to ximum cxtcnt prsctical,to prcvent stormwater from beco:ning polimed. If stormwater pollution N ill still o ortnµ•ater treatmcnt will be required per Section 1-3. Strategics to eliminate and iu the potential for polluted stortnvrater runoff from any outsidc manufacturing activity includc: Altering the activit��: 7he preferred optio alter any practice that may contaminate surFace water or ground water by either not producing the pollutant to ith or by controlling it in such a way as to keep it out of the environment. Enclosi�e the activiri: if the practice cannot be altered, it be enclosed in a builains to prevent rain from coming in contact with the activity. Coverine the activiri�: Placing the activity inside a building may be in ' e or prohibitively expensive. 'I�he cost of a building can be significantly reduced by not covenng the sides,t 'mivating the need for ventilating and lighting systems. Se eFr eatina the activiri: Certain parts of the activity may be the worst source of po . Those pans can be segregated and enclosed or covcrcd. 7'he drains from these arcas can then bc discharec sanitary sewer, proccss ttcatment, or a dcad-cnd sump�epending upon availablc meth�ds and applicable pe equircments. 4-�-12 r- - -