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11/16/2021 <br /> Sewer Overflow Locations attributable to Interceptor Surcharging Interceptor Condition <br /> vaiaefram Interceptorwas last inspected and rated in <br /> collapsed 20111:? <br /> 'I se gmented tiles <br /> ^Areas with Rating#5 areas were r'epair'ed <br /> In coal,we noticed atypical overflows <br /> ori <br /> �r Inspected to investigate atypical flows and <br /> M <br /> f� <br /> prepare for IWWlt implementation <br /> Found areas of tunnel roof collapse with <br /> associated debris build-up previously rated <br /> and df.. <br /> Rapid deterioration from Microbial Induced <br /> '�'7� Sulfurc Acd <br /> f aster orates Corrosion(alta sulfuric acid buildup). P-IafS <br /> P, mo,tar�o me gases from sewage converttosulfuric acid <br /> deterioradrng mortar joints. <br /> • <br /> Conducted ernergency repair of collapsed <br /> sections <br /> 9 10 <br /> r, <br /> of i <br /> Edgewater near Roy Dr. �1 ;, r Webb&Clifton <br /> Roof of tunnel <br /> Sulfur c Ac d Vo ds from <br /> deter orated mpend ng ollapsed <br /> mortarjo nts mm nentfe lure g f <br /> entedtles t <br /> rtd... Roof of tunnel t <br /> inepandio, !. <br /> neinantf.ilue, <br /> N j <br /> toll p d (� <br /> segme dues U ri7'� j�� <br /> v <br /> (t Iii 0 fll <br /> I`/ ��� IYbI IIY;u IAe�y'Y r Typcal Tunnel <br /> Note:Therebarand wood su orc /�� N4 Irl �� <br /> -r at' <br /> Pa /�i �r I� Fromm crobal <br /> p to photos were placed by M rr for �/%( <br /> rotec[on ndnced co <br /> P rrae an <br /> EEEEMEEEW <br /> 11 12 <br /> 3 <br />