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t <br /> The irrigation well which originally served this property on the west side of Wilmarth Road must <br /> be destroyed under San Joaquin County Environmental Health Division codes. The domestic well <br /> which serves the residence at 3546 Wilmarth is approximately So feet north of the Kingdom Hall <br /> property line. Distances should be verified during leachline emplacement at the north side of the <br /> property. <br /> Biomat formation is important to leachfield percolation. The biomat is composed of particulate <br /> materials in the septic tank effluent. Bacteria and other microorganisms at the effluent-soil interface <br /> colonize and grow on this matter and eventually the growth/decomposition rate of the biomat <br /> maintains dynamic equilibrium. Normally, the biomat controls the hydraulic capacity of the <br /> leachfield. However with high clay content soils, biomat formation does not always determine <br /> hydraulic capacity and capacity diminishes in the leachfield due to clay content. Seepage pits then. <br /> €L. assume a greater role of effluent management. <br /> k <br /> t <br /> r <br /> F . <br /> r <br /> 1� <br /> 1 <br /> € 9 <br /> VaiTey Aq PVearch <br />