Laserfiche WebLink
September 20,2002 <br /> Job Number: LG02-261 <br /> Page 6 <br /> The majority of surface soils located at the site are reported to be the Columbia fine <br /> sandy loam (no. 130).6 The Columbia fine sandy loam is described as somewhat poorly drained, <br /> nearly level soil is on flood plains. Permeability is moderately rapid in the Columbia soil." <br /> Table 3. <br /> Selected Soil Properties San Joaquin County Soil Survey Report.b <br /> Soil Name and Map Depth (in) Unified Soil Salinity Soil Septic tank <br /> Symbol Classification mmhos/cm Reaction absorption <br /> pH fields <br /> Columbia fine sandy 0-12: Fine sandy loam. SM, SC-SM <2 6.1-7.8 Moderate: <br /> loam,drained,0 to 12-60: Stratified sand SM <2 6.1-7.8 flooding, <br /> 2%slopes, 130. to silt loam. I I I I peres slowly. <br /> Note: The table descriptions do not necessarily reflect site-specific soil properties. <br /> One (1) 3-foot deep soil boring was drilled on each of the five (5)parcels to characterize <br /> the shallow subsurface conditions. Essentially the soil encountered was composed of fine sand <br /> with some silt and is similar to the descriptions of the shallow soil in the San Joaquin Soil <br /> Survey. A shallow percolation test was completed within the 3-foot deep soil boring. Plate 1 <br /> identifies the location of the percolation test borings. <br /> The percolation test borings were drilled utilizing a 4-inch hand auger drill. The casing <br /> used for the percolation tests were 2-inch diameter PVC pipe with an open end on the top and <br /> bottom. Perforations were made on approximately the last 12 inches of the casing. Two (2) <br /> inches of"pea gravel" was placed in the bottom of the hole, the casing was installed, and one (1) <br /> ._ foot of"pea gravel" was backfilled in the annular space. The percolation test boring was pre- <br /> soaked on August 1, 2002, 24-hours prior to the test. <br /> A one (1) hour percolation test was conducted on each parcel on August 2, 2002. The <br /> percolation test was conducted in accordance with the requirements of San Joaquin County <br /> Environmental Health Division. The last '/2 hour of the percolation tests were observed by <br /> Johnny Yoakum, Environmental Health Specialist of the San Joaquin County Environmental <br /> Health Division. The following table presents a summary of the percolation tests. <br /> 6 USDA Soil Conservation Service, Soil Survey of San Joaquin County,California, Sheet 7. <br /> �pERSO <br /> r S <br /> > n <br /> Z r <br /> �,tSpG� <br />