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r . r i� ora rna 1�.�c rn:� cua a'!o vvGl nt.ciivrci.uan 100, 444 S.1 WUMI BLllli l uuz <br /> KLE1NFELDER <br /> A.rmpfavm..�rompdny <br /> File No.20-1096-15 <br /> December 18, 1998 <br /> l <br /> F <br /> Mr. Barry Ruh] <br /> A. G. Spanos Land Company <br /> 1341 West Robinhood <br /> Stock--ton, California 95207 <br /> Subject: REVISIONS TO DECEMBER 4, 1998 LETTER <br /> RECOMNMNDED PERCOLATION RATES AND <br /> NITRATE LOADING: INFORMATION <br />+ CLUBHOUSE DISPOSAL AREA <br /> THE RESERVES AT SPANOS PARK <br /> SAN J'OAQUIN COUNTY, CALIFORNIA <br /> Dear Mr- Ruh): <br /> Presented in this letter are our recommended percolation rates and information regarding nitrate <br /> loading for the clubhouse disposal area at The Reserves project at Spanos Park, As you are <br /> aware, our. Ilan performed four percolation tests in native soils in the comer of the agricultural <br /> field closest to the clubhouse. Attempts were made to locate the percolation tests in areas not <br /> subject to construction equipment or other traffic that would have computed the underlying <br /> soils. Anticipating a relatively-shallow ,roundwater depth the percolation tests were excavated <br /> to the depths of approximately 24 inches. The percolation tests were set 'up on Monday, <br /> November 30, pre-soaked, and the actual tests perforated on December 1, 1998. After a test <br /> period of four hours, all four percolation tests indicated a percolation rate of 60 minutes per inch <br /> (mpi) with a head maintained at 12 inches. In the same vicinity, a 10-foot monitoring well was <br /> also completed on December 2, 1998, for the purposes of measuring groundwater table and <br /> obtaining a groundwater sample for analysis. The depth of groundwater was measured at 5 .feet 4 <br /> inches and a water samples was taken and transported to Sequoia Analytical in Sacramento on <br /> the same day. <br /> The analytical test results, which are attached, indicate very low values of nitrate as N of 1.05 <br /> _milligrams per liter (mg/1) and nitrate as NO-, .of 4.66 mg/l. The limits for these constituents are <br /> 10 mg/1 for nitrate as'N, and 45 mg/1 for nitrate as NQ1. <br /> a <br /> i <br /> 20-1096-1512018L996 Page t oft <br /> Copyright 1998 KIcinfielder. Inc. DecZmber !8. 1998 <br /> K1.E.INFFLfpER 2825 East Myrtle Stmo,%)cklon,CA 95205-4794 (209)943-1345 (209)948-0621 fax <br /> I <br />