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  Southeast side of the Quad C on the main Treatment Building
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  Northeast side of the Quad C on the main Treatment Building
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  The portable on site concrete batching plant
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  Forming the east side of the filter #4 inside the fabric cover

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  Looking north to south on the east end of filter #4
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  Looking at the top filter #4 getting ready to start heating everything for the pour
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  Getting the pumper ready to do the pour on the east side of filter #4
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  Plug on the piping sleeve on the north side of the filters chambers layout

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  Plug on the piping sleeve on the north side of the filters chambers layout
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  Getting the pumper truck ready to start pumping
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  Working on the pump truck to get it ready for the pour
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  The east side end of the filter areas looking east to west

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  Testing lab getting ready to start testing
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  Getting ready to start pumping in the filter chamber areas
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  Pouring the filter chamber layout south side
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  Pouring the filter chamber between north and south filter walls

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  Looking north to the NE corner of filter #8
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  Getting ready to start pouring on the south and east end of filter #4
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  Looking north along the east end of basin #4
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  SE corner of filter basin #4

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  Pouring the base in the north side of filter walls
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  Pumper truck pumping into the SE corner of filter basin #4
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  Pumper truck pumping in the SE corner of filter #4
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  Testing lab doing cylinders, air and slump tests and temp

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  Pouring in the SE corner of filter basin #4
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  Finishing the top of the filter basin #4
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  Finish work on the top of the pour for filter basin #4
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  Checking the outside walls for the filter #4 (east side)

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  Covering the pour for filter #4 to keep heat inside the covering
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  Checking the falls the next day after the pour on filter basin #4