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<br />. ,. ,'.,' <br />~ \.. t. ':"\ <br /> <br /> <br />Figure 1 O. Aerial view of settling ponds at Nast Tunnel. These <br />ponds control turbidity and pollution of natural streams during <br />construction. Waste water is monitored closely and "water quality <br />standards of Colorado" plus additional criteria is strictly adhered <br />to. The Fryingpan conduit extends towards the Boustead Tunnel <br />inlet in the upper left of photo. <br />