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xegional Water Quality Control Board <br /> August 9 , 1985 <br /> Page 2 <br /> CITY OF STOCKTON - ADMINISTRATIVE CIVIL LIABILITY COMPLAINT <br /> NO. ACL-UO3 <br /> 5 . Final plans and specifications for the modification and <br /> repair of the multimedia filters are complete and the project is <br /> scheduled to go out to bid shortly. The scope of the project <br /> includes completely changing the underdrain system type to one <br /> that is not susceptible to clogging. The project also calls for <br /> replacement of the media and provision of positive pressure <br /> relief. <br /> 6 . With the termination of water hyacinth testing, the City is <br /> currently cleaning the supply ditch to oxidation pond 14 in order <br /> to reestablish this location as the point where disinfection of <br /> the wastewater occurs . By chlorinating at this point, most if <br /> not all of the chlorine applied to achieve disinfection will be <br /> dissipated naturally prior to discharge. Sulfonation will of <br /> course be used to remove any remaining residual chlorine. <br /> 7 . Existing sulfonation equipment has been completely overhauled <br /> to assure reliability. <br /> 8. Chlorine residual analyzers are being overhauled and the <br /> control loop with the computer is being worked on in order to <br /> provide continuous residual analysis within the limitations of <br /> the ampheremetric method for chlorine residual analysis and to <br /> control dechlorination accordingly. <br /> 9 . The City is currently requesting proposals for a Wastewater <br /> Master Plan that will assess current and future wastewater <br /> treatment needs so that necessary additions can be made in a <br /> timely manner and discharge requirements can be consistently met <br /> as flows and loading increase. <br /> The City has taken or is taking steps to assure that the unique <br /> circumstances and converging factors that resulted in the <br /> unforeseen problems in June are not repeated. Most of the above <br /> steps were initiated prior to receipt of your Administrative <br /> Civil Liability Complaint. <br /> In view of these positive actions by the City, it is anticipated <br /> this will have an effect on our civil liability. <br /> THO J. llUSH <br /> DIRE TOR OF MUNICIPAL UTILITIES <br /> IJD:LEN:ac <br /> Z -� 6 <br />