Laserfiche WebLink
October 4,2001 <br /> Job Number: LG06-287 s <br /> `Page 9, <br /> report. <br /> `- Table 6. <br /> Summary of percolation.tests conducted for an engineered system <br /> (See Plate No.`1,for Locations) <br /> Test No., Percolation Percolation Rate Comment <br /> Date Tested Test Depth(ft) (minutes/inch) <br /> Shallow Test at'- 3 83-,min/inch Failed to achieve satisfactory percolation rate. <br /> Passing rate for shallow test is X60 min/in., <br /> existing Septic <br /> w imilar to SJC PHS/EHD percolation <br /> System(milk barn): Tested s <br /> method,for standard septic system. <br /> Dee "pit percolation 25 27 min/inch Fully saturated deep pit percolation test. <br /> test at existing Septic Not an,approved SJC PHS/EHD percolation <br /> System(milk barn). ' method for standard septic system. <br /> Shallow test at NE . . 3.5 62.5 min/inch Failed to achieve satisfactory percolation rate. <br /> corner of property. Passing rate'for shallow test is X60 min/m. <br /> Tested similar to SJC PHS/EHD percolation <br /> ¢ method for standard septic system'. <br /> Shallow.test at NE 3.5` No drop last 30 Failed to achieve satisfactory percolation rate. <br /> corner of property. minutes~ Passing rate for shallow•test is<'60 min/in. <br /> Tested similar to SJC PHS/EHD percolation <br /> method for standard septic.system. <br /> Deep pit percolation . 25 or55 min/inch- Fully.saturated deep pit percolation test., ; <br /> Not an a roved SJC PIHSIEHD percolation <br /> test at NE corner of pp <br /> property. method for standard septic system. <br /> In addition to.the soil suitability study which includes the percolation testing, a nitrate <br /> loading study was required for project approval by the County. <br /> VII. NITRATE.LOADING STUDY <br /> ' A build up of nitrates in ground water can cause a temporary blood disorder in infants <br /> called methemoglobinemia(blue baby syndrome). Serious and'occasionally'fatal poisonings of <br /> infants have occurred following`the ingestion of water containing nitrate concentrations greater <br /> than 10 mg/l nitrate.as N"or.45 mg/l nitrate as NO3. <br /> Because of the concern of nitrate leaching into.ground water, a nitrate loading analysis. <br /> was required b the Count to.estimate the average nitrate concentration of percolating water for <br /> q Y" y • , <br /> O �` <br />