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SU0010931 SSNL
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SU0010931 SSNL
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Last modified
5/7/2020 11:34:51 AM
Creation date
9/8/2019 1:01:45 PM
Metadata
Fields
Template:
EHD - Public
ProgramCode
2600 - Land Use Program
FileName_PostFix
SSNL
RECORD_ID
SU0010931
PE
2631
FACILITY_NAME
PA-1600122
STREET_NUMBER
3601
Direction
N
STREET_NAME
NAVONE
STREET_TYPE
RD
City
STOCKTON
Zip
95215-
APN
10129008
ENTERED_DATE
6/6/2016 12:00:00 AM
SITE_LOCATION
3601 N NAVONE RD
RECEIVED_DATE
6/6/2016 12:00:00 AM
P_LOCATION
99
P_DISTRICT
004
QC Status
Approved
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SJGOV\rtan
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FilePath
\MIGRATIONS\N\NAVONE\3601\PA-1600122\SU0010931\SS NL STDY.PDF
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EHD - Public
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• Sources of Nitrate <br /> Septic systems and dairies have been found to be the most significant sources of nitrate <br /> in ground water. Orchards that require fertilization in sandy soils are also a significant <br /> source of nitrate contamination in shallow or sandy aquifers in San Joaquin County. <br /> Contribution of Rainfall <br /> An estimate of the quantity and quality of rainfall was required for the nitrate loading <br /> analysis. An estimate of the deep percolation of rain was based on a calculation using <br /> average monthly precipitation of rainfall and evapotranspiration rates for the area. The <br /> calculation first determines whether the average monthly precipitation exceeds average <br /> monthly potential evapotranspiration. If so, then the difference is potential deep <br /> percolation. This method does not consider runoff. Based on the calculation shown in <br /> the following table, the deep percolation of rain (recharge) for the Stockton, California <br /> area is found to be 4.37 inches per year. <br /> Table 3. Estimate of Deep Percolation of Rainfall for Stockton, CA. <br /> Month Average Rain- Average Potential Annual Potential Deep <br /> Fall (inches) Evapotranspiration (inches) Percolation of Rain (inches) <br /> January 3.06 1.24 1.82 <br /> • February 2.73 1.96 0.77 <br /> March 2.19 3.41 None <br /> April 1.30 5.10 None <br /> May 0.46 6.82 None <br /> June 0.11 7.80 None <br /> July 0.02 8.06 None <br /> August 0.03 7.13 None <br /> September 0.22 5.40 None <br /> October 0.79 3.72 None <br /> November 1.76 1.80 None <br /> December 2.71 0.93 1.78 <br /> Totals 15.37 53.4 4.37 <br /> Notes: CIMIS evapotranspiration information at www.cimis.water.Ga.gov for Zone 12. Rainfall average from station <br /> 048560(Stockton Fire Station 4, CA)at www.wrcc.dri.edu. Closest available zone/station to Site were selected. <br /> • LOGE 1628 Page 9 <br />
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