DEQ-CFW_00059725

Form RSC 11-13 — Residuals Source Certification
Attachment C(2)
Pathogen Reduction and Vector Attraction Reduction Requirements
The 15A NCAC 02T.1106 Pathogen Reduction Requirements must be met when biological
residuals are applied to the land or placed in a surface disposal unit.
The 15A NCAC 02T.1107 Vector Attraction Reduction Requirements must be met when
biological residuals are applied to the land or placed in a surface disposal unit.
The Class A water treatment plant residuals generated by the Chemours Company — Fayetteville
Works do not meet the 15A NCAC 02T.1102 definition of "biological residuals" and therefore
neither the NCAC 02T.1106 Pathogen Reduction Requirements nor the NCAC 02T.1107 Vector
Attraction Reduction Requirements apply to the facility.
DEQ-CFW 00059725

Form RSC 11-13 — Residuals Source Certification
Attachment II(5)(c)
Chemours Company - Fayetteville Works
Residuals Sodium Adsorption Ratio (SAR) Calculation
Residuals Composition (data from 11-22-2011 sampling of North Sediment Basin):
Residuals
Method
Analytical
Detection
Result
Limit
(mg/kg dry)
(mg/kg dry)
Sodium
Na+
N/D
319
Calcium
Ca+2
438
179
Magnesium
Mg+2
644
157
NOTE: Assume Na+ is 319 mg/kg for SAR calculation
Conversion from mg/kg dry residuals to millieq u !vale nts per liter of water (meq/L):
Basis: SAR is the ratio of the sodium versus calcium/magnesium dissolved concentrations (as meq/L)
Assume 1.00 kg of residuals is dissolved in 1 liter of water (50% weight/weight)
Assume 100% of the residuals' cations go into solution in the water
Residuals
Assumed
. Cation
MW of
Cation
Cation
Cation
Conc.
Residuals
Conc.
Cation
Conc.
Equivilence
Conc.
(mg/kg dry)
in water
(mg/L)
(mg/mmol)
(mmol/L)
(meq/mmol)
(meq/L)
(kg/L)
Sodium
319
1.00
319
23.0
13.87
1
13.87
Calcium
438
1.00
438
40.1
10.92
2
21.85
Magnesium
644
1.00
644
24.3
1 26.50
1
53.00
.SAR=
Na+?
i12[{+ a2+) + (Mg2+)]
where Na+, Ca', and Mgt+ represent concentrations expressed
in milliequivalents per liter for each
constituent.
[Na+) = 13.87 meg/L
[ Ca+2 ] = 21.85 meg/L
[ Mg+2 ] = 53.00 meg/L
SAR = 2.27
P:\Excel\State\Land Application Permit\2016 Renewal\SAR Calcs.xlsx
DEQ-CFW 00059726

Form RSC 11-13 Residuals Source Certification
Attachment II(5)(e)
Chemours Company - Fayetteville Works
Plant Available Nitrogen (PAN) Calculation
Biosolids treatment:
Application method:
Mineralization factor (km ):
Volatilatilization factor (kv)
Drying/Evaporation
Surface application
40 %
50 % (Surface Application)
100 % (Injection)
Residuals Composition (data from 11-22-2011 sampling of North Sediment Basin):
Percent Solids 38.6 %
Nitrate -Nitrite as Nitrogen <16.2 mg/kg 16.2 Assumed for calculations
Ammonia (NH3) 1.37 mg/kg
TKN 5.53 mg/kg
Plant Available Nitrogen:
Year 1 Residuals P. (TKN-NH3)*km + NH3*kv + NO3 + NO2
Residuals PAN = 18.55 mg/kg (Surface application)
0.0371 lb/dry ton
Residuals PAN = 19.23 mg/kg (Injection)
0.0385 lb/dry ton
Conversion factor: (mg N / kg residuals) " 0.002 = lb. N / ton residuals
Years 2-5: There will be no application during years 2 through 5
Residuals Application Rates
Crop: Rye Grass
Soil Series: CaB
Realistic Yield Expectations (RY 80 Ib/acre/yr
Amount of Residuals Generated 9,257 tons/yr 4,628,500 Ib/yr
Application Area: 5 acres
Agronomic application rate: 2,156 dry tons/acre
Proposed application rate: 1,851 dry tons/acre
P:\Excel\State\Land Application Permit\2016 Renewal\PAN Calcs.xlsx
DEQ-CFW 00059727