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f <br /> iq <br /> ii <br /> PENCIL <br /> - '▪ • MARKS • • <br /> - - -..03/signall I <br /> I ': • �. <br /> tiz <br /> • . - 20" ' ;: it '= `z;. <br /> �y/ MANHOLE <br /> r' t • .......v. ..;. ''' •.:•:ifs:.. +11 .:; . <br /> — ' - -- <br /> .:„. <br /> . ... ii , 4. <br /> - - <br /> ...„ I , „ _ ..• A <br /> INLET b- k ,... < <--4 <br /> �✓ • 1. - - <br /> ,. SCUM.... .... _...,.. •2-. • -_. •. .. ii d OUTLET <br /> r�'OUTLET LEVEL.. * i�,- 4 � . :„; <br /> - ._- SCUM CLEAR SPACE_ - ! - CLEAN OUT TANK WHEN: <br /> -- II <br /> • r-- AIS 3 OR LESS OR <br /> - "- _ __ -- - i' g "8" IS 12" OR LESS <br /> _ -- _ _ <br /> air: <br /> _ - - - _ - _ - _i <br /> • <br /> ., <br /> • • .. • <br /> • . : , . . - . • • .- •.. -:! .::.. :i BLACK COLOR <br /> • �� j=' �' SLUDGE • •�•0 DISTINGUISHES SLUDGE <br /> ; t ' '.- ` :'' LAYER FROM LIQUID <br /> ••. SYe- <br /> ' --A oy..•ivii k.:,Y,K. ti.• .y"...+ti•' ••5 <br /> • ..41i, '�T� <br /> • ..,-,.x .,- ••y...r7,*:: <br /> ~' <br /> ,4I w <br /> • • <br /> MEASURE SCUM AND SLUDGE ACCUMULATIONS <br /> • • IN THE SEPTIC TANK <br />