WQ0039181_Other Correspondence_20200903

Carolina Malt House feels this is very conservative approach
since he only used at most 10o more water with his steeping
method. Based on this reasoning, a total nitrogen value of
43.88 ppm was used in waste utilization plan.
Estimated nutrient available for first crop is usually
recommended in the NCDA&CS Diagnostic waste report. In this
case, the lab coded the sample for no reduction in nitrogen.
The nutrient application will be based on no reduction for
now. The agronomist at diagnostic lab and field
representatives for NCDA&CS have been contacted about using
a reduction in future reports. It is expected that only
fifty percent (500) of the total nitrogen stored in waste
storage pond is available for crop use based on test results
for animal waste.
The technical specialist, Michael Shepherd of NCDA & CS,
completed the nutrient management plan based on the maximum
nitrogen nutrient amount, the soil fertility analysis,
irrigation design and crop planned at the site. The
nitrogen crop uptake value for fescue hay on Pacolet soil is
160 lb/acre. Consideration was given to phosphorus but due
to low phosphorus soil Index and low phosphorus measurement
in waste sample and crop intake value of 57 lb/acre of
phosphorus, nitrogen was determined to be the limiting
factor at application field.
TOTAL NUTRIENTS DISPOSAL LOSSES AVAILABLE NUTRIENT
(Nutrient availability)
492 lbs 1.00 492 lbs
492 lb PAN N/1,368,214 gal or 0.36 lb N PAN per 1000 gal
C. Spray Irrigation Water Balance
See water balance computed by the "NC DENR Division of
Water Quality Water Budget excel program (version5)" for
sizing the irrigation field and waste pond to handle the
irrigation loading rate.
Summary of Water Balance Below:
Max. Allowable Irrig. - Field 1 (Soil 1) - 76.48 in/yr
Max. Allowable Irrig. - Field 2A (Soil 1) - 76.48 in/yr
Max. Allowable Irrig. - Field 2B (Soil 1) - 76.48 in/yr
Flow to Field 1 (zone 1)- 470,485 gal/yr - 1.1 acre
Flow to Field 2A (zone 2)- 470,485 gal/yr - 1.1 acre
Flow to Field 2B (zone 3)- 427,415 gal/yr - 1.0 acre
Design Irrigation - Field 1 - 15.75 in/yr
Design Irrigation - Field 2A - 15.75 in/yr
Design Irrigation - Field 2B - 15.74 in/yr
Larry Thompson, soil scientist, evaluation recommends a
loading rate not to exceed 1.1 in/week and 0.4 in/week for
soil 1 and soil 2, respectively. This recommendation is
10 Carolina Malt House, Inc.
Waste Plan

lower than the water balance recommendation, except, Larry
Thompson indicated irrigating a greater amount is likely
during prolonged dry spells. It is felt the max. allowable
irrigation amount in water balance is like Larry's
recommendation. Soil Scientist also recommended an
instantaneous loading rate of 0.1 in/hr with a max.
application rate of 0.25 in/hr not to exceed 0.25
hour/event.
Nutrient Loading rate will control application amount
on Fields 1, 2A & 2B with the Pacolet Soil. In the future,
Mr. Goss plans on working with NCDA&CS agronomist to
determine the appropriate nitrogen reduction coefficient for
his wastewater.
Minimum Storage period recommended is 0 days in the
water balance. Carolina Malt House will construct a waste
pond with 3 months of storage to ease management of
irrigation system. Storage will likely help with managing
greater amounts of wastewater in future expansions.
VI. Irrigation Scheduling and Application of Wastewater
Irrigation scheduling is the process of determining
when and how much water to apply to the receiving crop from
the waste management system. The volume of liquid that is
applied is based on soil characteristics of the irrigation
fields and the weather.
The objective is to maintain storage capacity in the
waste storage pond and apply wastewater at a rate and amount
to avoid surface runoff. Three main considerations must be
made to irrigate. 1) Is the storage pond nearing maximum
storage capacity, 2) is the weather forecast suitable and 3)
is the land application field dry enough to be irrigated?
Waste System Operator should be knowledgeable about how
manage these considerations. See attached reference paper
"Irrigation Scheduling to Achieve Proper Application of
Wastewater" published by North Carolina Cooperative
Extension for guidance in making these decisions.
The application area will be managed as a cool season
grass hay field or some crop equivalent. The site has two
primary soil types that could be irrigated. See table below
for summary of typical soil characteristics for each soil.
Soil
Application
Typical Maximum
Rate with
Moisture to
Cover
replace each Application
Pacolet Soil 1
0.25 in/hr
Irrigation Cycle is 15 minutes
Apply once a hour for 15 minutes
Soil 2
0.25 in/hr
Irrigation Cycle is 15 minutes
Apply once a hour for 15 minutes
1 I Carolina Malt House, Inc
Waste Plan