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T <br /> August 20, 2006 <br /> 1 FOR: San Joaquin County Environmental Health Department <br /> r 304 East Weber Avenue, Third Floor <br /> Stockton,CA 95202 <br /> PROJECT: CARMELO INDUSTRIAL PARK <br /> CPC NAVARRA - CARMEL_ O PHASE 2 <br /> APN 250-140-14 <br /> SA-99-103 <br /> SUBJECT: On-site Wastewater Management System Study Addendum' <br /> Reference is-made to the attached August 20, 2006 On-site Wastewater Management System <br /> Study for the above referenced project. As referenced, the sampling event of the EnviroServer <br /> 1200 that serves the Carmelo Industrial Park facility for this Study was determined to have a high <br /> concentration of nitrate in the system effluent before discharge to the on-site filter bed. The . <br /> operator of the EnviroServer, Mr. Bernie Dietz, diagnosed a problem with its operation and re- <br /> sampled the effluent after making adjustments. . <br /> The following report is Mr. Dietz's narrative explaining the apparent cause of the high nitrate <br /> concentration, and his remedy of the problem. Analysis of the effluent by Mr. Dietz after <br /> adjusting the system is also attached. <br /> Respectfully submitted, <br /> f CHESNEY.CONSULTING <br /> Don Chesn y, R.E.A.-I <br />' Registered Environment Assessor#4675 <br /> T. O. Oo-,3794 ♦ Tudock 6A 95381 ♦ Office(209)668-1403 ♦ Ea7C(209)668-2598 <br />