SU0003866 SSNL - Laserfiche WebLink

Home Browse Search

L June 4, 2004 NOA Project Number: E04065A L Table 5. LSummary of Percolation Tests. Test No., Percolation Percolation Rate Test Comment Date Tested Test Depth(ft) (minutes/inch) Duration P-1 shallow,6-2-04 3.26 — 5 hr No movement,failed. (Parcel 1) P-1 deep,6-2-04 19.79 8.1 5 hr Achieved satisfactory (Parcel 1) percolation rate. P-2 shallow,6-2-04 3.0 250 5 hr Failed. (Parcel 2) P-2 deep,6-2-04 24.65 15.6 5 hr Achieved satisfactory _ (Parcel 2 percolation rate. Notes: A satisfactory percolation rate for a"shallow"test is less than or equal to 60 minutes per inch. kA satisfactory percolation rate for a"deep"test is less than or equal to 30 minutes per inch. 6.5 Discussion of Percolation Tests As a result of the percolation testing, both parcels evaluated demonstrated a satisfactory Lpercolation rate in accordance with the requirements of the EHD. The Site appears to be suitable for leach line and seepage pits. We recommend that any future septic system layout follow the method prescribed in the Sewage Standards (1996) of the EHD. We do not foresee any adverse conditions. 7.0 CONCLUSIONS AND RECOMMENDATIONS L In summary, a satisfactory percolation rate was achieved in the proposed septic disposal areas of both phases of the project. No ground water was encountered in any of the borings drilled L on the property, and the depth to ground water is approximately 110 to 135 feet below the ground surface for the period of Fall 1998 and Spring 1999. The on-site water well was tested for nitrate and DBCP. DBCP was non-detectable, and nitrate was found at 10.0 mg/L-NO31 well below the maximum contaminant limit of 45 mg/L-NO3. Based on the results of this study, our office has found the soils to be suitable for a standard septic system with leach lines and seepage pits for the Site. We recommend that the design Land installation of the septic system follow the requirements established by the EHD. 10 f L L