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INFORMATION SHEET <br /> HOUSING AUTHORITY OF THE COUNTY OF SAN JOAQUIN <br /> HOUSING AUTHORITY THORNTON SEWER PLANT <br /> SAN JOAQUIN COUNTY <br /> The Housing Authority of the County of San Joaquin Thornton Sewer Plant serves <br /> a farm labor community of approximately 300 persons. The Discharger disposes of <br /> 0.0294 mgd of domestic sewage to land. The facility consists of a Imhoff tank <br /> (flow chamber capacity, 820 cu. ft., and sludge chamber capacity, 1390 cu. ft.) and <br /> evaporation/ percolation ponds (2.98 million gallons capacity). The sludge is <br /> drained from the chamber once per month and dried on-site. The wastewater <br /> treatment facility is properly fenced. <br /> The sewer ponds were relocated in 1978 west of the Interstate 5 Freeway. The <br /> relocated ponds were designed by the California Department of Transportation. In <br /> 1983, the ponds' depths were increased to two feet. During the heavy rainy <br /> season, the facility has encountered a rise in ground water, which prevents the <br /> wastewater from percolating properly. The ponds' freeboard is monitored daily. <br /> IK:ik <br />