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LE 1 17 PERCOLATION TEST RESULTS WITH CORRESPONDING APPLICATION RATES IN GALLONS /FT'/DAY TABLE INCH(3.3 FT)DEEP PERC TEST BORING 13.2 min/inch / 0.757 gallons/ft'/day 94 INCH (7.8 FT)DEEP PERC TEST BORING 22.7 min/inch / 0.614 gallons/ft'/day 268 INCH(22.3 FT)DEEP PERC TEST BORING 125.0 min/inch / 0.100 gallons/ft'/day Application Rates adapted from Table 3 of the SWRCB OWTS Policy. Soil chemistry and textural analyses are important parameters in assessing nitrate loading from any project. Soil samples were obtained from the exploratory/deep perc test boring at the 3.5 ft depth (floor of filter bed), 8 ft depth(floor of sump), 12 ft, 18 ft and 25 ft depths. Table 2 below illustrates the soil characteristics of the soil samples retrieved, with the Lab Results report found in Appendix D: TABLE 2 SOIL TEXTURE CLASSIFICATION AND ANALYTICAL TEST RESULTS SAMPLE I.D.DEPTH IN THE SOIL TEXTURE SOIL NITRATE- pH EFFLUENT DISPOSAL AREA CLASSIFICATION NITROGEN CATION EXCHANGE CAPACITY AND SAND SILT AND CONTENT CLAY PERCENTAGES 3.5 FT DEPTH LOAM 0.505 ppm NO,--N 7.9 22.1 meq/100g 41% 40% 19% 8 FT DEPTH LOAM 1.59 ppm NO;N 7.6 20.9 meq/100g 44% 44% 13% 12 FT DEPTH LOAM 3.55 ppm NO,--N 7.7 19.7 meq/100g 38% 48% 15% 18 FT DEPTH LOAM 2.59 ppm NO;N 7.6 22.6 meq/100g 34% 45% 21% 25 FT DEPTH LOAM 2.34 ppm NO;N 7.5 22.3 meq/100g 25% 49% 27% GROUNDWATER INFORMATION Of critical importance to this project, is the directional flow of groundwater underlying the subject property. The flow direction is generally in an easterly direction. The following years were examined with the directional flow referenced by the Lines of Equal Elevation, and These Maps are found in Appendix D. 2000: South-southeast 2005: North-northeast 2007: East 2011: North-northeast 2017: North-northeast 2022: North-northeast 2025: East Page -2- Chesney Engineering, Inc.