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SR0083415_SSNL ADDENDUM
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SR0083415_SSNL ADDENDUM
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Last modified
2/24/2022 1:21:10 PM
Creation date
2/23/2022 5:06:40 PM
Metadata
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EHD - Public
ProgramCode
2600 - Land Use Program
FileName_PostFix
SSNL ADDENDUM
RECORD_ID
SR0083415
PE
2602
FACILITY_NAME
88 MARKET & GRILL
STREET_NUMBER
21850
Direction
E
STREET_NAME
LIBERTY
STREET_TYPE
RD
City
CLEMENTS
Zip
95227
APN
02120024
ENTERED_DATE
3/16/2021 12:00:00 AM
SITE_LOCATION
21850 E LIBERTY RD
P_LOCATION
99
P_DISTRICT
004
QC Status
Approved
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EHD - Public
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Soil Suitability&Nitrate Loading Evaluation CTE Job#25-1084G <br /> New Septic Leech Lines <br /> 21850 East Liberty Rd <br /> Clements, California <br /> January 30, 2021 (Revised 1/17/2022) Page 7 of 9 <br /> 4.11 inches/year. <br /> N,,,= Nitrate concentration of nitrified leach-field effluent is assumed to be on <br /> the order of 40 mg/1 (average is 35 to 45 mg/1 per Hantzsche and <br /> Finnemore; 1992). <br /> D= Fraction of nitrate-nitrogen loss due to denitrification of leach field effluent is <br /> assumed to be 0.25 (most representative of typical onsite sewage <br /> disposal situations per Hantzshe and Finnemore, 1992 &U.S. EPA, 1980, <br /> 1981). <br /> R = Average recharge rate due to rainfall (taken as 80% of annual 17 in/yr with 20% <br /> assumed lost to offsite drainage & evapotranspiration) <br /> 13.6 in/year(average taken from USDA SCS Soil Survey of San Joaquin <br /> County, Fig 3,page 8, dated October 1992). <br /> Nb = Background nitrate nitrogen concentration of rainfall recharge at the <br /> water table typically falls between 0.5 and 1.0 mg/l (per Hantzsche and <br /> Finnemore; 1992) and is assumed to be 1.0 mg/l. <br /> The nitrate loading calculation is as follows: <br /> NC _ [I(NW) (1-D) +R(Nb)] /(I+R) <br /> Nc _ [4.11 (40) (1.0-0.25) + 13.6 (1.0)] / (4.11 +13.6) =7.73 mg/l as N <br /> The calculated nitrate (7.73 mg/L as N) for groundwater Nitrate-Nitrogen Impacts is below the <br /> State drinking water standard of 10 mg/L for nitrogen (N). <br /> T.INC <br />
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