WQ0044626_Staff Report_20230810

August 10, 2023
To: DWR Central Office — WQ, Non -Discharge Unit
Attn: Cord Anthony
From: Caitlin Caudle
Winston-Salem Regional Office
State of North Carolina
Division of Water Resources
Water Quality Regional Operations Section
Staff Report
Application No.: W00044626
Facility name: Smith SFR
Note: This form has been adapted from the non -discharge facility staff report to document the review of both non -discharge and NPDES permit applications and/or renewals. Please complete all sections as they are applicable.
I. GENERAL AND SITE VISIT INFORMATION
1. Was a site visit conducted? ® Yes or ❑ No
a. Date of site visit: 8/7/2023
b. Site visit conducted by: C. Caudle and K. Potwora
c. Person contacted: Chris Murray
II. PROPOSED FACILITIES: NEW APPLICATIONS
Facility Classification: SFR
Proposed flow: 480 GPD
2. Are the new treatment facilities adequate for the type of waste and disposal system? ® Yes or ❑ No
If no, explain: The proposed treatment system is adequate for treating low strength domestic wastewater that will
be disposed of through surface irrigation.
3. Are site conditions (soils, depth to water table, etc.) consistent with the submitted reports? ❑ Yes ® No ❑ N/A
If no, please explain: See add info request.
4. Do the plans and site map represent the actual site (property lines, wells, etc.)? ❑ Yes ® No ❑ N/A
If no, please explain: See add info request.
5. Is the proposed residuals management plan adequate? ® Yes ❑ No ❑ N/A
6. Are the proposed application rates (e.g., hydraulic, nutrient) acceptable? ❑ Yes ® No ❑ N/A
If no, please explain: See staff comments.
7. Are there any setback conflicts for proposed treatment, storage and disposal sites? ❑ Yes or ❑ No
III. REGIONAL OFFICE RECOMMENDATIONS
1. Do you foresee any problems with issuance/renewal of this permit? ❑ Yes or ❑ No
If yes, please explain:
2. List any items that you would like the NPDES Unit or Non -Discharge Unit Central Office to obtain through an
additional information request:
Item
Reason
Clarification of facility
address.
4207 Hwy 801 is the neighboring property.
Clarification of camper of
At the time of the site visit, there was a camper within 50ft of the property line.
adjacent parcel.
The camper appeared to be serving as a residence. Will this camper remain?
FORM: WQROSSR 04-14 Pagel of 3

Confirm that there is a 25ft
setback from the drip field
At the time of the site visit, a ditch was noted to the east of the application field
and the ditch to the east of
as shown on 3ft Lidar. See attached map.
the application boundary.
Clarification of the
proposed cover crop.
Based on the site visit and soil map provided, the cover crop is mixed grasses.
Clarification is water
supply well will be on the
will public water be used? The approximate location of a water supply well is
property.
not noted on the engineer plans.
3. Recommendation: ® Hold, pending receipt and review of additional information by regional office
❑ Hold, pending review of draft permit by regional office
❑ Issue upon receipt of needed additional information
❑ Issue
❑ Deny (Please state reasons: )
,—DocuSigned by:
4. Signature of report preparer:
Signature of regional supervisor:
Date: 8/10/2023
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IV. ADDITIONAL REGIONAL STAFF REVIEW ITEMS
On August 7, 2023, Division of Water Resources staff Caitlin Caudle and Kristen Potwora conducted a site visit. Chris Murray, LSS,
was present during the entire visit. A review of the proposed application area was completed.
CLC1 (36.035377,-80.603141)
0-6"
10YR 4/3, granular structure, small manganese nodules
6-15"
2.5Y 6/6, subangular blocky structure, small manganese nodules and redox features
15-20"
10YR 516, subangular blocky structure, small manganese nodules and redox features, clay increase
occurs
20-30"
1OYR 6/3, subangular blocky structure, IOYR 5/6 concentrations, heavy clay increase, some gley
colors occurring
30-35'
10YR 5/6, subangular blocky structure, more redox features, mix of red, black, white colors, clay
content decreasing, low chroma colors through the horizon
CLC2 (36.035264,-80.603210)
0-12", similar to CLC1, more manganese in subsurface, no low chroma colors to 12" but redox features are present.
CLC3 (36.035437,-80.603191)
0-18", similar to CLC1, not as much manganese in subsurface, no low chroma colors to 18" but redox features are present.
Staff found that the soils are within range of the characteristics of Rasalo soils and similar soils. This area was originally mapped Enon
until the Piedmont temperature regime changed. Based on field observations, there is likely a perched water table impacted by the high
clay content in the Bt horizon.
Staff are concerned that the ksat measurements may not be accurate as the last reading on each nest was higher than the previous
measurement, implying that a steady state had not been reached yet. The provided geometric mean may not be accurate.
Staff are concerned that the drainage coefficient used is too high for the property. The recommended loading rate based on the soil
scientist report is 19.08 in/yr, which is on the higher end of the maximum annual loading rate. But the ksat measurements are on the
lower end of the ksat range for the loading rate group. A similar soil series in the region had a higher ksat measurement with a
drainage coefficient of 8%. Staff recommend that the drainage coefficient be lowered.
Based on the Irrigation Area Calculation Worksheet, there are several months that do not allow for irrigation (Jan -Apr, Sept). The
proposed storage is only 6 days. How will prolonged wet conditions be handled?
On pg 88, an assumption of the calculations is that irrigation flow is based on reduced flow. What does this mean? The proposed dose
of 40 gallons/dose x 4 dose/day x 3 zones x 365 days = 175,200 gallons.
FORM: WQROSSR 04-14 Page 2 of 3

The waterbody classification for this property is Sawmill Creek (12-102-07).
The missing soil analysis is provided in the this package.
FORM: WQROSSR 04-14 Page 3 of 3

8/10/2023
Site Visit Map
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Waypointo
ANALYTICAL
Client :
Piedmont Enviromental Assoc., P. A.
216 South Swing Road
Suite 1
Greensboro NC 27310
Lab No: 22060
2850 Daisy Lane, Wilson, NC 27896
Main 252-206-1721 0 Fax [phone]
"Every acre... Every year®
www.waypointanalytical.com
Grower:
PIEDMONT ENVIRONMENTAL
Farm: DARLA SMITH
Field:
Report No:
Cust No:
Date Printed:
Date Received
PO:
Page
SOIL ANALYSIS
Sample ID: STE1
23-170-0523
06526
06/21/2023
06/19/2023
1 of 1
Test
Method
Results
SOIL TEST RATINGS
Calculated Cation
Exchange Capacity
Low
Medium
Optimum
Soil pH
1 :1
4.9
-
7.1 meq/100g
Buffer pH
BPH
6.62
%Saturation
Phosphorus(P)
M3
48 ppm
%sat meq
K 2.4 0.2
Ca 36.5 2.6
Mg 16.5 1.2
H 43.7 3.1
Na 0.6 0
Potassium (K)
M3
67 ppm
Calcium (Ca)
M3
518 ppm
Magnesium (Mg)
M3
141 ppm
Sulfur (S)
M3
9 ppm
Boron (B)
M3
0.1 ppm
Copper (Cu)
M3
0.5 ppm
Iron (Fe)
M3
207 ppm
K/Mg Ratio: 0.14 ❑
Ca/Mg Ratio: 2.21 ❑
Manganese (Mn)
M3
161 ppm
Zinc (Zn)
M3
5.1 ppm
Sodium (Na)
M3
10 ppm
Soluble Salts
Organic Matter
LOI
0.3%
Estimated N Release
46 Ibs/acre
Nitrate Nitrogen
SOIL FERTILITY GUIDELINES
Crop
Rec Units:
(Ibs) LIME (tons)
N
P205
K 20
Mg
S
B
Cu
Mn
Zn
Fe
Crop : Rec Units:
Comments:
M3 - Mehlich 3 BPH - Lime Index HIM - Humic Matter LOI - Loss On Ignition 1:1 -Water pH
Analysis prepared by: Waypoint Analytical Carolina, Inc.