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DILLON & MURPHY <br /> CONSULTING CIVIL ENGINEERS <br /> 1820 W. Kettleman Lane, Suite E, Lodi, California 95242 <br /> P. O. Box 2180, Lodi, California 95241 <br /> (209) 334-6613 • Fax (209) 334-0723 <br /> BF - <br /> l <br /> February 21, 2003 MAR 0 3 2003 <br /> ENPERMIT/-)ERviGES H <br /> San Joaquin County Environmental Health <br /> 304 E. Weber <br /> Stockton, CA 95202 <br /> Attn: Ray Borges <br /> Re: Aqua Pools <br /> Project No. 02116 <br /> Dear Ray: <br /> I have received some additional information from MicroSepTec (enclosed). I am in agreement <br /> with their premise that soil type does not affect their results. However, the information they <br /> provided indicates that they do apply their systemsn sandy soil areas and areas with high <br /> groundwater. Their prediction of dentrification of 10% in sandy soil and 35% in clay soil will <br /> certainly be incorporated into the ultimate design of the leach fields. It appears their product will <br /> emit effluent below the allowable standards and any denitrification generated from the leach <br /> field lines will only add to the benefit. <br /> As I discussed previously, the owners have purchased the adjacent property (approximately 2.5 <br /> acres). There will be more than sufficient space for any proposed leach field. <br /> Please call me for discussion. Given the additional data,my client would like to move forward <br /> with the project even though they do not have specific uses for the proposed lease building. I can <br /> provide what I would consider conservative calculations for effluent of generic uses if you feel it <br /> would be appropriate. Thank you for your attention on this matter. <br /> Sincerely, <br /> Joe urphy <br /> JM/eg <br /> Enc. <br /> CA02116Borges'Itr 022103 <br />