SU0003898 SSNL - Laserfiche WebLink

Home Browse Search

Dillon & Murphy did not yield any unusual contamination concerns. A groundwater test was performed on the well located on the property adjacent to the subject parcel; the address being 10334 E. Woodbridge Road ��' ��• - (A.P.N. 017-230-02). The water was tested for nitrates and DBCP. The samples were taken by Ed Krager of Dillon & Murphy at the spigot at the well. The well is a standard rotary well for domestic use. The samples were placed in a controlled environment for transport to Precision Enviro-Tech. Custody of samples were relinquished to staff at Precision Enviro-Tech '/z hour after samples were taken (see chain of custody in Appendix). The nitrates were measured as 1 .48 m IL<--The DBCP was measured at as non-detec (see Appendix for results). Based on water test results, potential for contamination is low. VI. SOIL PROFILE AND PERCOLATION TESTS Two test holes were excavated to a depth of 3.5 feet. The purpose of the test holes were to determine percolation rates in this area. Pr-approxima-t-Q location of the test. holes,.s.ee the Tentative Parcel Map in the.Appendix. The holes were prepared in accordance with County Standards. The holes were excavated on,. February 9, 2004 and filled to a measurement of 30 inches 02 inches above the gravel per County standards) with water for the 24-hour presoak period. On February 10, 2004, at 8:00 a.m. after the presoak_eriod the hole coynt.ain_ed�o water, and the 4 hour test was preformed in accordance with County standards. The last half hour of the test for this parcel was witnessed by a County health official (Lisa Medina, SR. R.E.H.S.) and the test data is as follows: Test Hole Percolation Rates 1 5.21 min/inch 2 3.16 min/inch (see Appendix for full test data sheet) Based on the percolation data obtained, it is recommended that a standard septic tank and leach lines (including a 12,000 .sgJft_pies_e of land reserved-for leach field) shall be sufficient for waste disposal. No pits required. — Soils lithology in the general area of the test holes consisted of (3) different types of sandy loam. As a shallow percolation test proved adequate for a conventional septic system, no further soil exploration was necessary. A copy of the Soils Classification Map prepared by the U.S. Department of Ag Soil Conversation Service is included in the Appendices. Their map classified the soils as Acampo Sandy Loam at the north end of the project, Columbia Fine 2 C:I0378 SOILS REPORT 020904