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DHM: Are people being informed and being reminded <br /> occasionally of the danger who have wells within in the toxic <br /> plume area? <br /> DA: No. There is no mechanism for this. <br /> DHM: At what level of Hexavelant Chromium does Cal Water shut down <br /> wells. Have any been shut off? <br /> DA: A couple of wells were shut down because the draw was pulling the <br /> toxic plume toward them making it hard to clean it up. These wells are <br /> near Marley cooling towers. <br /> Now some labs can test down to 2ppb of Chrome 6. The maximum safe <br /> level, 5ppb, may be reexamined. <br /> DHM: How will this plume affect or be affected by the proposed Mormon <br /> channel Restoration Project which, when completed, sometimes move <br /> surface water through the old channel? <br /> DA: The Mormon Channel Restoration Project will probably help block the <br /> plume from moving further south so it would aid in the cleanup. <br /> DHM: Will the plume affect water quality in the Mormon? Could the <br /> chrome 6 get into that water? <br /> DA: No. The plume is lower the farther it is from Marley's plant. It is <br /> well below the Mormon Channel bottom and would not pollute the surface <br /> water that may be put into the channel. <br /> DHM: How is the cleanup of the water being done? <br /> DA: The water is pumped out of wells, and then, depending on the level of <br /> Chrome 6 run through one of two filters: one is an ion exchange (a water <br /> softener) and the other is magnetic based with a polymer. The polymer <br /> combines with the Chrome and the magnets attract it. The water that <br /> is cleaned is put into the Diverting Canal. It is difficult putting even pure <br /> well water into a river because the well water in the central valley has so <br /> much more TDS (Total Dissolved Solids) than the river water has. <br /> DA: As to the so far undisclosed dump on Walker Lane. He passed the <br /> information along to the "Complaint Department". They did not want to <br /> file on it since they like to catch people in the act of dumping and Marley <br /> had sold the site in 1993. Duncan Austin will take samples in a few <br /> weeks since his machine is still broken, and then, if there are toxins in <br /> 5 <br />