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' May21,2018 <br /> ' NITRATE LOADING STUDY <br /> 25288 N CHEROKEE LANE <br /> ' GALT,CALIFORNIA <br /> ' 1.0 INTRODUCTION <br /> Petralogix Engineering, Inc. has been retained by Ms. Ciara Kozlowski to conduct a Nitrate <br /> t Loading Study for the property located at 25288 N.Cherokee Lane,Galt,San Joaquin County, <br /> California. The site assessor parcel number is (APN) 005-190-76. <br /> ' The San Joaquin County Environmental Health Department recognizes nitrate <br /> contamination as a significant threat to the surface and groundwaters of the County. <br /> Groundwater quality may be impacted by nitrate contamination where percolating effluent <br /> ' leaches into the ground, should this effluent reach groundwater. Due to the EHD concerns <br /> regarding nitrate leaching into the surface and groundwaters from septic systems, a nitrate <br /> loading study is required by the EHD for the proposed development to measure the potential <br /> ' concentration of percolating effluent and rain fall over a long period of time.This report has <br /> been prepared to meet the requirements of the San Joaquin County EHD's Nitrate Loading <br /> Study Requirements Checklist, dated July 14, 2003. <br /> ' A simple mass balance formula, as discussed in the article by Hantzshe and Finnemorel in <br /> Ground Water, provides a method for nitrate loading analysis to estimate long-term <br /> ' groundwater nitrate impacts for a wide area. Based on the Hantzshe and Finnemore study, <br /> water quality in the upper saturated groundwater zone approximates the quality of <br /> percolating recharge waters,which the authors believe is a reliable planning tool to estimate <br /> ' the potential impact to groundwater,as well as a useful source of analysis to official planning <br /> agencies. The equation utilized by the Hantzshe and Finnemore approach considers the <br /> development area,soil denitrification factor,rainfall volume, rainfall nitrate concentrations, <br /> t waste effluent quantity,and waste effluent nitrate concentration.The formulas,calculations, <br /> and assumptions are provided on Plates 7 and 8.The units of nitrate used in the mass balance <br /> equation are nitrate-N,whose maximum drinking water contaminant level is 10 mg/L. <br /> ' 1.1 Description of Site <br /> ' The property is located at 25288 N. Cherokee Lane (APN: 005-190-76), Galt, County of San <br /> Joaquin, California.The parcel is approximately 1.84 acres. The parcel is currently a vacant <br /> lot. <br /> ' The property is located in a rural residential neighborhood approximately one-quarter mile <br /> east of State Hwy 99; Calimyrna Road is the nearest cross street. The property is <br /> ' approximately 2,000 feet north of the Jahant Slough. The general vicinity consists of rural <br /> Petralogix EA i � l ore, E.J., 1992. Predicating Ground-Water Nitrate-Nitrogen Impacts.Ground Water,Vol 30, No 4. <br /> ' 26675&cella Roa , a�it.�9 n <br /> (209)-000-5729 <br /> w .petraloglx.com <br /> 1 <br />