Laserfiche WebLink
May 25, 2004 <br /> ` NOA Project Number: E04061 <br /> Page 5 <br /> Table 3. <br /> Typical Quantity of Effluent for Various Sources. <br /> Category Total Use Average Quantity per Person Average Daily Flow <br /> per day Per Parcel <br /> Primary Residence 5 persons 70 gal/day/person 5 people/day*70 <br /> 4-bedroom (Crites and Tchobanoglous, 1998) gpd/person= <br /> 350 gpd <br /> Legal Second Dwelling Unit 3 persons 70 gal/day/person 3 people/day*70 <br /> 2-bedroom (Crites and Tchobanoglous, 1998) gpd/person= <br /> 210 gpd <br /> Average Daily Flow: 560 gpd per parcel <br /> Notes —gpd is gallons per day. <br /> The daily waste water quantity is estimated to be 560 gallons per day per fully developed parcel. <br /> This figure is based on 70 gallons per day per person use. A four bedroom home is estimated to <br /> have up to five occupants and a legal second dwelling unit is estimated to have up to three <br /> occupants. Waste water quality is discussed within the nitrate loading section of the report. <br /> 4.0 GROUND WATER INFORMATION <br /> 4.1 Ground Water Depth and Gradient <br /> The San Joaquin County Flood Control and Water Conservation District (1998 and 1999) ground <br /> water depth and elevation maps were reviewed to determine the ground water levels near the <br /> Site. The Fall 1998 and Spring 1999 maps are the most current official maps available from the <br /> County. According to these maps (Plates 2 through 5), ground water lies between 130 and 140 <br /> feet below ground surface in the vicinity of the Site and flows to the northwest at a rate of <br /> approximately 20 feet per mile. <br /> 4.2 On-Site Ground Water <br /> Three wells were observed on the Site. Only one well permit was found for the Site during file <br /> ` review at EHD on May 21, 2004. According to the permit, dated August 24, 1984,this domestic <br /> well serving the existing residence was advanced to a depth of 285 feet with a grout seal at 50 <br /> feet. No information was available for the other wells. <br /> No ground water was encountered by the staff of NATS during the drilling of 55 percolation test <br /> holes, the deepest of which was 20.8 feet, in April and May of 2004 (personal communication, <br /> David Kaestner,May 25, 2004). <br />