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  Waste drain piping under Quad "A"
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  Waste drain piping under Quad "A"
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  Waste drain piping under Quad "A"
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  Waste drain piping under Quad "A"

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  Interior west wall of Filter #1
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  Excavation for the Chemical Spill Vault
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  Mixer and pump truck during placement of flowable fill in Filter #1
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  View to the east from on top of filters, looking at crews assembling gang forms

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  Flowable fill placement in Filter #1
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  Interior of Filter #2
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  Interior of Filter #2
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  Drain waste piping under Quad "A"

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  Waste drain piping under Quad "A"
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  Waste drain piping under Quad "A"
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  Waste drain piping under Quad "A"
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  Waste drain piping under Quad "A"

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  Waste drain piping under Quad "A"
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  Flowable fill placement in Filter #2
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  42" RW at NW corner of Quad "D"
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  Forms flew out on riser pipe encasement of Quad "D"

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  Elevator base slab
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  View to the west of the BWW channel on the north end of Filters #3 and #4
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  View to the east of BWW channel on north end of Filters #3 and #4
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  View to the west of Chemical Spill Vault foundation

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  View of wall sleeves in the south Quad "A" stem wall
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  View of wall sleeves in the south Quad "A" stem wall