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~~^_Q2AD0 DEPPB.T>:E~"C OF P.E:iLTn <br />• mater duality Control Division <br />R=_tio^.ale- Page 3 <br />PerWit ~o.: CO-003802: <br />Activated Sludge One basin: 22.5' x 11.33' x 10' SWD = 14,074 gal. <br />38 hour detention time at 0.018 ?1GD <br />18 Ib BODS 1000 cu. ft. organic loading <br />Total air provided from 2 aerators = 143.6 <br />scfm <br />Total air required = 88 scfm <br />Clarification One basin: 10' x 11.33' x 10' SWD = 8475 gal. <br />11.3 hour de [ention time at 0.018 MGD <br />186 gal/sq.ft./day overflow rate <br />947 gal/ft./day weir overflow rate <br />19 ft. weir length <br />0.13 lb BODS/MESS/day average loading factor <br />Chlorination Sanuril Model 1000, serves Wastewater Treatment <br />Plants up to 100,000 gpd <br />One chlorine contact basin: 9' x 2.33' ~: 9' SWD, <br />Volume = 1412 gal. <br />37.7 minute detention time at 0.054 P1CD <br />• Eff!uert Pump S[a[ion 2 pumps, 80 gpm @90' TDH <br />5200 gal. effluent pump tank <br />A flow diagram showing all four sources, their volumes and the treatment <br />provided is included with this amendment as Figure 3 on page 19b. <br />APPLICABLE RULES AND REGULATIONS FOR OUTFACE 1/004: <br />FEDERAL <br />Federal Best Practicable Control Technology (BPT) and Eest Available <br />Technology Economically Achievable (8AT) limitations exist for [he coal mining <br />industry. The applicable limitations are shown in Table 1. <br />J <br />