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Page 4 - Letter to Planning Department - 1/24/79 4 Another source of possible contamination is the silage pit. Wet waste placed in the silage pit can release leachate which can contain chemicals used to process the prod- ucts from which the wet waste is derived. i Another possible source of contamination is the feed lot operation. Another possible source of contamination which is not ' discussed in the EIR is as follows ® as indicated on Page _25 of the EIR, heavy metal such as lead and arsenic may be possibly brought into the project with materials to be spread on the alluvium. There is no discussion of the affect of such heavy metals on the Stockton East Water District treatment plant, nor is there an evaluation of the possibility or probability of such heavy metal contamination. INADEQUACIES IN DRAFT ETR The above sources of possible contamination are in part listed in the draft EIR, but the effect or possible effect on the Stockton East Water District water. treatment,plant and e Stocktonians drinking the water from that water treatment pi plant are not discussed. They are dismissed on the assumption in Appendix VIII that they will not be a problem. Stockton E' East Water District feels that the purpose of an EIR is to pro- vide information to enable those persons having the duty to re- view it to make an intelligent, reasoned decision. In view of the magnitude of the consequences which include a possible shut-down of the Stockton East Water Dis- trict water treatment plant, or possible effects on the health of Stocktonians drinking that water, Stockton East Water Dis- trict feels that a thorough analysis of all possible sources of pollutants or contaminants, and of the possible transfer paths enabling those pollutants or contaminants to enter the water treatment plant, and of the effect thereof on the water treatment plant, and the effect thereof on the health of the Stocktonians drinking the water should be made. At a suggested minimum, such a thorough analysis would include the following: A. An analysis of the water flow paths, both surface and sub-surface, from each of the possible sources of contamination, to Indian Creek and thence to the water treatment plant. This will obviously require a very thorough geological survey and analysis , which the EIR itself states has not been made . (See Page 25, Page 41 , and Appendix 4 IV. )