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2018 4th Quarter � -�-� � -�� � .�,�� � � � �- � North Lake Dam(1X00832) Crty of Coppell,Texas Operation&Maintenance Manual � North Lake Dam � �Maintenance Inspection Checklist � Embaniune�—tlAain Dam ' Datn Compotlent/Ohservation Good �c�ir Poor M/A Comments ? �� � r Cracks I Crest Misalignment - � 1 low Areaz � Embankment Slopes � � Sinkholes Deteriorated Gcass Cover . � Frosion Damage Rodent ACtivity � Ant Activtty � , - --- Bulges ' .. � Boils "�" . . Trees or Obscuring Bnish �°`� - - � Sfides or Stoug(�s Cave In or Collapse � �� .. Seepage W - � 8enching i/ Dispiaced Rock Riprap � lnternal Dminage System _ Gogged Manhole � Clogged or Obscured Outlet Steady Elow of Clear Water P+ezometers Missing Cover Missing Cap Oti►er. . b�5 ��, �C � � � � '�orth Lake Dam (TX00832) City of Coppell,Texas Operation & Maintenance Manual Embankment—Saddle Dam Dam Component/Observation � Good Fair Po�r . N/A Comments Crest Cracks � �� � Crest Misalignment �� Low Areas Embankment Slopes . Sinkholes Deteriorated Grass Cover . Erosion Damage Rodent Activity f' Ant Activity Bulges Boils "' Trees or Obscuring Brush � � . , Slides or Sloughs - - Cave (n or Coltapse � �� . Cracks Seepage j�� Benching Displaced Rock Riprap Other. Drop Inlet Spillway Dam Component/Observotion 600d Fair Poor N/A Comments Jnlet Strudure Concrete Cracking or Spalling Construction/Expansion Joints ' Vegetation in Cracks Trash Rack Rock Riprap in Approach September.�92� ��� l �Vo�► � �. : _. �.mr¢ .m��m,��r�. . _ �..s�.�_...aJ .���.. „ _ _���.�,.o.._..����, �. _._�,_.__. . - North Lake Dam (TX00832) City of Coppell,Texas Operation & Maintenance Manual Drop Inlet Spiliway(continued) Dam Component/Observation. Good Fair Poor N/A Comments Discharge Chute and Stilling Basin Concrete Cracking or Spalling Construction/ Expansion Joints Vegetation in Cracks Conduit Headwall Debris in Channel Downstream Rock Riprap Erosion Damage Downstream � Pilot Channe!and Local Drainage Concrete Cracking or Spalling Construction/Expansion Joints � Vegetation in Cracks .. Debris in Channel . Excessive Ponding Areas , Other: ' Additional Notes: ��"�� ��' ..�� �-Q- .�C"-m"t��v`- �YYI � � � Gt ?'��- ��,��.�.c�-�-��,�-_- !i(,��-� .�� �.r -��� t���2� �'e.7 � '� � �L����v"—� �r �""-� t/N-�,t?--�,`��"_ '� ��� �..� � C � �- ���i�'Q��� .� - j / � � �, �� )� INS C OR DATE CITY ENGINEER DATE S - �5 �`� �'�� ���� �