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SR0032706_SSNL
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SR0032706_SSNL
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Last modified
2/17/2021 4:35:27 PM
Creation date
2/17/2021 4:28:33 PM
Metadata
Fields
Template:
EHD - Public
ProgramCode
2600 - Land Use Program
FileName_PostFix
SSNL
RECORD_ID
SR0032706
PE
2602
STREET_NUMBER
10948
Direction
S
STREET_NAME
AIRPORT
STREET_TYPE
WY
City
MANTECA
Zip
95336
APN
20402004
ENTERED_DATE
2/10/2003 12:00:00 AM
SITE_LOCATION
10948 S AIRPORT WY
P_LOCATION
99
P_DISTRICT
003
QC Status
Approved
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Tags
EHD - Public
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Nitrate Mass Balance Calculation: :--f� <br /> Standard Septic-System (Nw =75 mg/L-N) <br /> t Data Input: <br /> Concentration Rain(Nb):-'1.00 mg/L-N <br /> Effluent Quantity(Q): 436 ggals.Iday Denitrification (d):.15.0% <br /> Effluent Stream(Nw): 75 mg/L-N Deep Perc:of Rain (R): 5.01 in/yr <br /> Site Area (A): 14.0 Acres Waste Loading (W): 0.42 in/yr <br /> s Result: <br /> Mass Balance(N,): 5.8 mg/L-N <br /> MCL Drinking Water,Nitrate,as N. •10.0 m614-N <br /> Percent of MCL Nitrate as N:°58% <br /> Equations: <br /> (W) in (Q) gal x J A3 x 365 day x 1 acre x12 in x 1 Find <br /> yr -day 7.48 qal 1 year 43,560 ft2 1 ft (A) <br /> is <br /> 0.42 in/yr(site)=436 gailday x(1 cu-ft/7.4.8 gals},x(365 daysl 1 year)x(1 acre 143,560 sq-ft)x.(12 in.1 1 ft)x(1 site 14 acres) <br /> Nz= WN—(1-d)+RN, Haritzsche-Fennemore Equation(Nd <br /> W+R <br /> 5.84 mg/L-N=((0.42 inlyr x-75 mg/L-N x-(1-0.15))+(5.01 in/yr x 1m9/L-N))/(0.42 in/yr.+5.01 in/yr) <br /> Variables: <br /> Nc=Average.nitrate-N concentration (mg/1)of combined effluent and rainfall-percolate(5.84 mg/L-N): ' <br /> W=Uniform waste water loading for.study area (in''/yr)(0.42 incheslyear). <br /> Nw=Total nitrate-N concentration of waste water percolate(75 mg/L-N). <br /> d = Fraction of nitrate-N loss due to denitrification in the.soil (15%). <br /> F R= Uniform deep percolation of rainfall (5.01 inlyr): . <br /> -N concentration of rainfall(1 mg/L-N). <br /> Nb= Background nitrate <br /> Assumptions: ; <br /> 1. .Total nitrogen concentration of waste"stream based on estimate of 75 mgIL=N. <br /> 2: Fraction of nitrate-N loss due to denitrification in the soil is assumed'to be;1,5%. - - <br /> 3. Estimated deep percolation of rainfall is 5:01 inlyr, see deep percolation of rain worksheet. <br /> 4: Assume background nitrate-N concentration of rainfall is 1 mg/L-N. <br /> NEIL 0.ANDERSON&ASSOC.,INC. <br /> GEOTECHNICAL SER!ACES-ENGINEERING LAOORATORIES Z W <br /> - albush <br /> i fz%I x7-trm g3S4C\P . <br /> Plate 2 <br />
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