WQ0022810_More Information Received_20221013

Initial Review
Reviewer
Thornburg, Nathaniel D
Is this submittal an application? (Excluding additional information.) *
Yes No
If not an application what is the submittal type?* Annual Report
Residual Annual Report
Additional Information
Other
Permit Number (IR) * WQ0022810
Applicant/Permittee Anthony and Allison Lampuri
Email Notifications
....... ........ ............ .. .. .......... ..
Does this need review by the hydrogeologist? * Yes No
Regional Office
CO Reviewer
Admin Reviewer

Submittal Form
Project Contact Information
Please provide information on the person to be contacted by NDB Staff regarding electronic submittal, confirmation of receipt, and other correspondence.
............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
Name* kevin davidson
Email Address*
[e-mail]
Project Information
Application/Document Type*
New (Fee Required)
Modification - Major (Fee Required)
Renewal with Major Modification (Fee
Required)
Annual Report
Additional Information
Other
Phone Number*
9196233538
Modification - Minor
Renewal
GW-59, NDMR, NDMLR, NDAR-1,
N DAR-2
Residual Annual Report
Change of Ownership
We no longer accept these monitoring reports through this portal. Please click on the link below and it will take you to the correct form.
hftps://edocs.deq.nc.gov/Forms/NonDischarge_Monitoring_Report
Permit Type: * Wastewater Irrigation
Other Wastewater
Closed -Loop Recycle
Single -Family Residence Wastewater
Irrigation
Permit Number: * WQ0022810
Has Current Existing permit number
Applicant/Permittee Address* 166 Democracy PLace
Facility Name* 166 Democracy PI. SFR
Please provide comments/notes on your current submittal below.
Thank you Cord.
High -Rate Infiltration
Reclaimed Water
Residuals
Other
At this time, paper copies are no longer required. If you have any questions about what is required, please contact Nathaniel Thornburg
at [e-mail].
Please attach all information required or requested for this submittal to be reviewed here.
(Application Form, Engineering Plans, Specifications, Calculations, Etc.)
AWT Reponse Letter.pdf 5.57MB
Upload only 1 PDF document (less than 250 MB). Multiple documents must be combined into one PDF file unless file is larger
than upload limit.
* By checking this box, I acknowledge that I understand the application will not be
accepted for pre -review until the fee (if required) has been received by the Non -
Discharge Branch. Application fees must be submitted by check or money order and
made payable to the North Carolina Department of Environmental Quality (NCDEQ).
I also confirm that the uploaded document is a single PDF with all parts of the
application in correct order (as specified by the application).
Mail payment to:
NCDEQ — Division of Water Resources
Attn: Non -Discharge Branch
1617 Mail Service Center
Raleigh, NC 27699-1617
Signature
4KW' e1&W
Submission Date 10/13/2022

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Engineers grid Soul Scientists
5,01 N, Sateni Street, SUfte 203
Apex, Nwtl i Garol4ia 21502
0A10-809..0Ci00
www.agriwaste.cani
Mr. Cord Anthony, Engineer I
NC Department of Environmental Quality
Division of Water Resources / Water Quality Permitting
Non -Discharge Branch
512 N. Salisbury Street
Raleigh, NC 27604
RE: Application No. WQ 0022810
Additional Information Request
Lampuri Property WWTS
166 Democracy PI
Apex, NC
SFR Wastewater Irrigation System
Chatham County
Dear Mr. Anthony,
October 12, 2022
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Thank you for your comments regarding the application for the Lampuri Property WWTS
(Application No. WQ0042881).
Below, please find a response to each of the questions/comments listed in your e-mail
dated September 13, 2022. To facilitate the review of this response, I have included each
point from the comment letter in bold. We appreciate your time and attention in the
meeting held on October 10, 2022. We have included points discussed in the meeting
under the appropriate response comment.
F. Soil Evaluation:
1. Per [15A NCAC 02T .0604 (b)] a soil report that is representative of the site
shall be submitted.
During the most recent site visit, Raleigh Regional Staff noted that:
"An extremely large amount of fill material will need to be added to
the disposal area to provide the minimum 12 inches of separation between
the soil/application surface and the Seasonal High Water Table (SHWT)
depth. The addition of fill materials to a site to achieve the minimum 12

inches of separation between the disposal surface and the SHWT is generally
only suitable when there is naturally occurring mineral soil present in the
topsoil horizon and the slopes are less than 15%. All the topsoil in this area
has been removed. It is a very real possibility that the subsoil/fractured
rock/parent material layer that is now the surface of the proposed disposal
area will cause lateral flow of applied effluent resulting in inadequate
wastewater treatment and run off from the disposal area.
Response: AWT agrees with the concern of the current surface soils and
the ability for it to provide an adequate infiltrative surface. As such, we
recommend a detailed construction sequence be followed. The
construction sequence should include the following:
• Sandy Loam to Loam texture soil (to be preapproved by North
Carolina L.S.S.) will need to be added across the entirety of the
irrigation field such that a minimum of 12" will be present after
allowing settling and incorporation.
• To facilitate infiltration, discing of the site will be a requirement along
with incorporating the fill material into a disc depth of 4 inches below
existing grade. The L.S.S. will ensure the site is adequately dry and
raked so that full incorporation can be achieved.
• It is expected that upwards of 14-16 inches of soil will need to be
provided in order to allow for the 12 inches of separation to be
achieved.
• The most restrictive horizon was determined to be xx depth, which is
where the system sizing calculations are applicable. Once the effluent
reaches this depth, it is expected to be entirely into naturally occurring
soil and thus should not achieve preferential flow at the interface
between the fill and existing surface.
• The slope is generally less than 10% and less than 5% across the xx
portion of the field. On the lower portion of the system where the slope
exceeds 15%, the fill depth will be increased such that the final grade
will be uniform across the top of the irrigation field at a slope of less
than 10% across the whole field. This will mean a significant amount
of fill soil required across the eastern portion of the field and an
appropriate slope of 3:1 should be established around the entire
perimeter to help account for any subsurface lateral flow.
The surface texture governing the instantaneous loading rate
described in the application (Sandy Loam in narrative; Silty Clay Loam in
profile descriptions) was observed in a few locations (mostly in ponded areas)
in the proposed disposal field, but much of the area has a coarser surface
texture (potentially indicating significant erosion) with the presence of
expansive clays just below the surface. These areas were also very
compacted. There were 2 areas in the field that had ponded water on them
indicating a lack of infiltration, the presence of expansive clays, and possibly
a perched water table. As mentioned, adjacent areas were very compacted
ii

and completely dry to at least several inches depth also indicating a lack of
infiltration and probable runoff. Multiple large rills were noted on the more
sloped areas of the disposal field. The slopes in these areas were estimated to
be greater than 15%. In several places the rills have uncovered what appears
to be saprolite/parent material visible 2-3 inches below the surface.
Response: The instantaneous loading rate is primarily driven by the
surface texture of the first 4-6 inches of material. The reference to Sandy
Loam textures being present in the existing soil surface was a
mistake/oversight and will be corrected in the revised soils report.
Once the appropriate fill material is placed, an adequate zone of
absorption will be present to allow for the instantaneous loading rate and
an opportunity for the roots of vegetation and benefits of
evapotranspiration to occur. Erosion is currently taking place after any
storm event and will likely continue to take place until the site is altered.
The existing surface material was previously the BC or C horizon before
the site was altered. We agree that the majority of this material is made up
of saprolite, generally silty clay loam and finer textures. It is also likely
dominated by expansive clay mineralogy. These factors are primary
indicators of water movement concerns. By running Ksat tests in these
materials, we can demonstrate their ability to conduct water in some
limited capacity. Based on the results of the tests performed by AWT, we
are confident that the saprolite/parent material will function in this
capacity as long as the compaction that currently exists at the surface can
be fractured. The primary cause of the ponding at the surface and erosion
observed is due to the compaction of the surface material and lack of
vegetation. Any rills will be graded smooth during the discing process and
any other areas which are currently structureless will be approved during
this process.
Many of the observations noted above signal a difficult time to be had
stabilizing the proposed fill and establishing vegetative cover. Additionally, a
large amount of sediment is leaving the site and entering an intermittent
stream and pond on the property and adjacent properties. There is an
ephemeral stream that follows the northern property boundary that
discharges into the intermittent stream mentioned."
Response: Soil loss and erosion are a concern. Currently there is inadequate
vegetation or ground cover established to prevent the loss of the highly
erodible soil present on the property. An essential part of permitting this
system will be constructing a site that is stable, vegetated, and infiltrative. As
a general comment, we are suggesting the following steps be added as a
permit condition:
1. A preconstruction conference shall be required between the soil
scientist, project engineer, installation contractor, and permittee.
iii

2. The soil scientist shall provide a fill placement plan to the contractor at
the preconstruction conference such that the minimum depth to
SHWT, slope stabilization, and overall grade can be established to
address site concerns.
3. Contractor shall provide the soil scientist with a sample of the fill soil
so that it may be preapproved prior to site placement.
4. Soil scientist shall be present during all discing and soil incorporation
activities.
5. The soil scientist shall be required to approve the final placement of
fill soil to ensure the site has been adequately constructed.
6. Soil shall be stabilized by vegetation/grass being fully established
prior to the installation of any wastewater system components in the
irrigation area. Immediately upon placement of fill soil and prior to
any potential erosion producing rainfall even property seed/straw or
erosion control mat/netting shall be added over areas where fill has
been placed.
7. All irrigation system components shall be placed by hand with the
exception of supply line trenches.
Regional Staff then listed the following questions in addition to the
concerns above:
1. The differing textures of the native material (subsoil/saprolite/fractured
rock/expansive clays) and fill material will make lateral flow over the native
material very likely. The application states that the fill material should be
incorporated into the native material to a depth of 5-6 inches. This may not
be enough mixing to integrate the fill and native materials. Additionally,
fractured rock/saprolite/parent material was observed just below the surface
in many parts of the proposed disposal area that may significantly hinder
incorporation. How does the applicant plan to ensure that
incorporation/integration of the fill material with the subsoil/parent material
native to the site will be done in a manner that prevents lateral flow between
the fill material and the native material?
Response: These items have been addressed in the responses above.
2. There are currently multiple large rills in the proposed disposal area. This
indicates a high erosion potential. The typical prescribed texture for fill
materials also has a high erosivity potential. Rills indicating preferential flow
in the disposal area raise the concern for cross connection between
incompletely treated wastewater and local surface waters and land not
included in the proposed disposal area. How does the applicant plan to
address the high potential for erosion and migration of incompletely treated
wastewater from the disposal area?
Response: These items have been addressed in the responses above.
1V

3. Following on the previous question/observation; how does the applicant plan
to ensure the establishment and maintenance of competent vegetative cover
on the easily eroded slopes of the proposed disposal area?
Response: Once vegetative cover is established in the fill material and
proper grade is established the issues relating to erosion will be mitigated.
Please provide an updated soils evaluation to address the above concern that
is signed and sealed by a North Carolina Licensed Soil Scientist.
Response: The original soils report will be revised and submitted to
address the concerns above.
G. Engineering Plans:
1. Plan Sheet WW-2 contains a pole barn that has not been buffered out.
Regional staff also noted the existence of an ephemeral stream following the
northern property boundary that discharges into an intermittent stream.
These surface water features shall be depicted and buffered. Additionally,
drainage structures have been included in the plan set. It is unclear whether
water collection occurs at individual points (the grates) and is then conveyed
to the discharge point via solid walled pipes or if the system utilizes a
perforated pipe and lowers groundwater over the entire length (such as a
French drain). If the drains collect at a point, then the entrance shall be
buffered as a surface diversion. If the drains collect along the length, then
they shall be buffered as a subsurface groundwater lowering drainage
system. Per [15A NCAC 02T .0604 (d)(3)] all required setbacks shall be
depicted.
Response: The drawing plans have been updated to include the ephemeral
stream following the northern property boundary. We have included the
appropriate setback requirement. The drainage structure on site is a single
intake and then conveyed through non -perforated pipe to a discharge
point. This is considered a surface diversion and the drawings have been
updated to include the appropriate setback requirement.
2. The pole barn is described as containing an apartment and/or plumbing.
Lines from the pole barn are then shown to connect to the treatment and
irrigation system. Application item IV.5. of the Single -Family Residence
Wastewater Irrigation System form (SFRWWIS 06-16) states that this is a 5-
bedroom single family residence. However, page WW-2 of the submitted
engineering plans states that this is a 4-bedroom house. This plan sheet also
depicts two different inlets to the septic tank, one from the proposed 4-
bedroom house and one from a proposed garage/apartment. According to
v

15A NCAC 02T .0601, the scope of the rules in that section are applicable for
surface irrigation of wastewater systems designed for one building single-
family residences. Based on this rule, single family systems permitted by our
program shall not serve multiple residential buildings served by the same
treatment system. Please clarify the intended use of the proposed
garage/apartment.
Response: The pole barn is considered an accessory dwelling. The
building permit for this structure was issued by Chatham County as a
detached single family dwelling and under the R-1 zoning jurisdiction.
This accessory dwelling will be a horse barn with a one -bedroom
apartment. The primary structure will be a 4-bedroom single family
residence. Since the pole barn is considered an accessory dwelling to the
primary residence, it should be permittable under the current rules.
H. Specifications:
1. See comment F.I. Any management practices performed during installation
to address the concerns listed above shall be included in an updated
specifications package.
Response: Updated specifications have been included.
I. EnOneerin2 Calculations:
1. Based on the loading rate and daily flow, my calculations showed that
approximately 0.81 acres of irrigation area are required. Additionally, the
calculations included in the application package call out a required area of
0.81195 acres. The proposed irrigation area, however, is only 0.80 acres. This
is insufficient for adequate irrigation. Per [15A NCAC 02T .0114 (b)]
dwelling units shall be designed to treat 120 gallons of sewage per day per
bedroom.
Response: An updated soils evaluation has been included in Attachment
A. The Irrigated Area is 0.824 acres.
2. Additionally, almost the entire area suitable for irrigation as described by the
soil scientist is to be utilized based on the design calculations. The
engineering plans, however, only show drip irrigation lines for
approximately half of the suitable area. Plan sheets shall be updated to
reflect drip line coverage of the required irrigation area.
Response: As discussed on the call, it appears that some of the drip
irrigation lines did not show up on the original drawings when submitted.
An updated set of drawings has been included.
vi

Thank you for your assistance with this review. If you have any further questions or
comments, please feel free to contact me at 919-367-6310 or via email at
kdavidsg � , anwaste.com.
Best Regards,
Kevin Davidson, P.E.
V.P. of Engineering
Attachment 1
vii

DW State of North Carolina
Department of Environmental Quality
Division of Water Resources
Division of Water Resources
15A NCAC 02T .0600 — SINGLE-FAMILY RESIDENCE WASTEWATER IRRIGATION SYSTEMS
INSTRUCTIONS FOR FORM: SFRWWIS 06-16 & SUPPORTING DOCUMENTATION
The Division of Water Resources will not accept an application package unless all instructions are followed. Plans, specifications
and supporting documents shall be prepared in accordance with 15A NCAC 02L .0100, 15A NCAC 02T .0100, 15A NCAC 02T
.0600, 15A NCAC 18A .1900, Division Policies and good engineering practices. Failure to submit all required items may result
in the application being returned, and will necessitate additional processing and review time.
For more information, visit the Water Quality Permitting Section's Non -Discharge Permitting Unit website
General — When submitting a non -discharge application to the Water Quality Permitting Section's Non -Discharge Permitting Unit,
please use the following instructions as a checklist in order to ensure all required items are submitted. Adherence to these instructions
and checking the provided boxes will help produce a quicker review time by assisting the reviewer in locating the required materials
and potentially reducing the amount of requested additional information. Unless otherwise noted, the Applicant shall submit one on iginal
and at least two copies of the application and supporting documentation.
A. Cover Letter (All Application Packages):
® List all items and attached supporting documentation included in the application package, as well as a brief description of the
requested permitting action.
B. Application Fee (All New and Major Modification Application Packages):
® Submit a check, money order or electronic funds transfer made payable to: North Carolina Department of Environmental
Quality (NCDEQ).
❑ The appropriate fee amount for new and major modification application packages may be found at: Standard Review Project
Fees.
C. Single -Family Residence Wastewater Irrigation Systems (FORM: SFRWWIS 06-16) Application (All Application Packages):
® Submit the completed and appropriately executed Single -Family Residence Wastewater Irrigation Systems (FORM:
SFRWWIS 06-16) application. Any unauthorized content changes to FORM: SFRWWIS 06-16 shall result in the application
package being returned. If necessary for clarity or due to space restrictions, attachments to the application may be made, as
long as the attachments are numbered to correspond to the section and item to which they refer.
❑ If the Applicant Type in Item L2. is a corporation or company, provide documentation it is registered for business with the
North Carolina Secretaa of State.
❑ If the Applicant Type in Item L2. is a partnership, sole proprietorship, trade name, or d/b/a, enclose a copy of the certificate
filed with the Register of Deeds in the county of business.
® The facility name in Item IL2. shall be consistent with the facility name on the plans, specifications, agreements, etc.
® The Professional Engineer's Certification on Page 6 of the Single -Family Residence Wastewater Irrigation Systems (FORM:
SFRWWIS 06-16) application shall be signed, sealed and dated by a North Carolina licensed Professional Engineer.
® The Applicant's Certification on Page 6 of the Single -Family Residence Wastewater Irrigation Systems (FORM: SFRWWIS
06-16) application shall be signed in accordance with 15A NCAC 02T .0106(b). Per 15A NCAC 02T .0106(c), an alternate
person may be designated as the signing official if a delegation letter is provided from a person who meets the criteria in 15A
NCAC 02T .0106(b).
❑ If this project is for a renewal without modification, use the Non -Discharge System Renewal (FORM: NDSR) application.
D. Existing Permit (All Modification Packages):
® Submit the most recently issued existing permit.
❑ Provide a list of any items within the permit the Applicant would like the Division to address during the permit modification
(i.e., compliance schedules, permit description, monitoring, permit conditions, etc.).
E. Property Ownership Documentation (All Application Packages):
® Per 15A NCAC 02T .0604(e), the Applicant shall demonstrate they are the owner of all property containing the wastewater
treatment, storage and irrigation facilities:
E Legal documentation of ownership (i.e., contract, deed or article of incorporation), or
❑ Written notarized intent to purchase agreement signed by both parties with a plat or survey map, or
❑ Written notarized lease agreement that specifically indicates the intended use of the property and has been signed by both
parties, as well as a plat or survey map. Lease agreements shall adhere to the requirements of 15A NCAC 02L .0107.
® Provide all agreements, easements, setback waivers, etc. that have a direct impact on the wastewater treatment, conveyance,
storage and irrigation facilities.
INSTRUCTIONS FOR FORM: SFRWWIS 06-16 & SUPPORTING DOCUMENTATION Page 1 of 4

F. Soil Evaluation (All Application Packages that include new irrigation sites):
®Per 15A NCAC 02T .0604(b) and current Division Policy, submit a detailed soil evaluation that has been signed, sealed and dated
by a North Carolina Licensed Soil Scientist and includes at a minimum:
❑ The report shall identify all the sites/fields with project name, location, and include a statement that the sites/fields were
recommended for the proposed land application activity.
❑ Note, if the soil evaluation was performed more than one year prior to the submittal of this application package, a statement
shall be included indicating that the site has not changed since the original investigation.
❑ Field delineated detailed soils map meeting all of the requirements of the Soil Scientist Evaluation Policy.
❑ Soil profile descriptions meeting all of the requirements of the Soil Scientist Evaluation Policy.
❑ Provide all soil boring logs performed at the site.
❑ Standard soil fertility analysis conducted no more than one year prior to permit application for each map unit in the soil
map legend for the following parameters:
❑ Acidity ❑ Exchangeable sodium percentage (by calculation) ❑ Phosphorus
❑ Base saturation (by calculation) ❑ Magnesium ❑ Potassium
❑ Calcium ❑ Manganese ❑ Sodium
❑ Cation exchange capacity ❑ Percent humic matter ❑ Zinc
❑ Copper ❑ pH
Note: The number of samples will vary depending upon the project size and past land use history. Multiple samples for
each map unit are required if the irrigation zones are separated, and cropland, pasture, hay land and wooded areas shall be
sampled separately for the same map unit due to past differences in soil fertility management.
❑ Saturated hydraulic conductivity (KSAT) data that shall include at a minimum:
❑ A minimum of three KSAT tests shall be conducted in the most restrictive horizon for each soil series in the soil map.
❑ All KSAT tests shall be conducted in areas representative of the site.
❑ All KSAT tests shall be run until steady-state equilibrium has been achieved.
❑ All collected KSAT data shall be submitted, including copies of field worksheets showing all collected readings.
❑ Submit a soil profile description for each KSAT data point that shall extend at least one foot below the tested horizon.
❑ Soil evaluation recommendations shall include at a minimum:
❑ A brief summary of each map unit and its composition and identification of minor contrasting soils.
❑ Maximum irrigation precipitation rate (in/hr) for each soil/map unit within the proposed irrigation areas.
❑ Identification of areas not suitable for wastewater irrigation.
❑ Recommended geometric mean KSAT rate to be used in determining the SFR Loading Rate Group for each soil/map
unit based upon in -situ measurement of the saturated hydraulic conductivity from the most restrictive horizon.
❑ Recommended annual hydraulic loading rate (in/yr) for each soil/map unit within the proposed irrigation areas based
upon in -situ KSAT measurements form the most restrictive soil horizon. The recommended loading rate must be in
accordance with the Single -Family Residence Wastewater Irrigation System Loading Rate Calculation Policy.
❑ A completed copy of the Single -Family Residence Loading Rate Workbook (i.e., Project Information, Potential
Evapotranspiration, Precipitation, and Irrigation Area Calculations).
G. Engineering Plans (All Application Packages):
® Per 15A NCAC 02T .0604(c)(1), submit standard size and 11 x 17-inch plan sets that have been signed, sealed and dated by a
North Carolina licensed Professional Engineer.
® At a minimum, the engineering plans shall include the following items:
❑ Table of contents with each sheet numbered, as well as cross-referenced with the appropriate application items.
❑ A general location map with at least two geographic references, vicinity map, topographic map and site map.
❑ A process and instrumentation diagram showing all flow, recycle/return, electrical paths, etc.
❑ Plan and profile views of all treatment and storage units, including their piping, valves, and equipment (i.e., pumps, etc.),
as well as their dimensions and elevations.
❑ Details of all piping, valves, pumps, precipitation/soil moisture sensors, etc.
❑ A hydraulic profile from the treatment plant headworks to the highest irrigation point.
❑ The irrigation area with an overlay of the suitable irrigation areas depicted in the Soil Evaluation.
❑ Each nozzle/emitter and their wetted area influence, and each irrigation zone labeled as it will be operated.
❑ Locations within the irrigation system of air releases, drains, control valves, highest irrigation nozzle/emitter, etc.
® Plans shall represent a completed design and not be labeled with preliminary phrases (e.g., FOR REVIEW ONLY, NOT FOR
CONSTRUCTION, etc.) that indicate they are anything other than final specifications. However, the plans may be labeled
with the phrase: FINAL DESIGN - NOT RELEASED FOR CONSTRUCTION.
INSTRUCTIONS FOR FORM: SFRWWIS 06-16 & SUPPORTING DOCUMENTATION Page 2 of 4

H. Specifications (All Application Packages):
® Per 15A NCAC 02T .0604(c)(2), submit specifications that have been signed, sealed and dated by a North Carolina licensed
Professional Engineer.
® At a minimum, the specifications shall include the following items:
❑ Table of contents with each section/page numbered, as well as cross-referenced with the appropriate application items.
❑ Detailed specifications for each treatment/storage/irrigation unit, as well as all piping, valves, equipment (i.e., pumps, etc.),
nozzles/emitters, precipitation/soil moisture sensor, audible/visual high water alarms, liner material, etc.
❑ Site Work (i.e., earthwork, clearing, grubbing, excavation, trenching, backfilling, compacting, fencing, seeding, etc.)
❑ Materials (i.e., concrete, masonry, steel, painting, method of construction, etc.)
❑ Electrical (i.e., control panels, etc.)
❑ Means for ensuring quality and integrity of the finished product, including leakage, pressure and liner testing.
® Specifications shall represent a completed design and not be labeled with preliminary phrases (e.g., FOR REVIEW ONLY,
NOT FOR CONSTRUCTION, etc.) that indicate they are anything other than final specifications. However, the specifications
may be labeled with the phrase: FINAL DESIGN - NOT RELEASED FOR CONSTRUCTION.
L Engineering Calculations (All Application Packages):
® Per 15A NCAC 02T .0604(c)(3), submit engineering calculations that have been signed, sealed and dated by a North Carolina
licensed Professional Engineer.
® At a minimum, the engineering calculations shall include the following items:
❑ Hydraulic and pollutant loading calculations for each treatment unit demonstrating how the designed effluent
concentrations in Application Item V.1. were determined (Note: "black box" calculations are unacceptable).
❑ Sizing criteria for each treatment unit and associated equipment (i.e., pumps, etc.).
❑ Total and effective storage calculations for each storage unit.
❑ Friction/total dynamic head calculations and system curve analysis for each pump used.
❑ Manufacturer's information for all treatment units, pumps, irrigation system, etc.
❑ Flotation calculations for all treatment and storage units constructed partially or entirely below grade.
❑ Demonstrate the designed maximum precipitation and annual loading rates do not exceed the recommended rates.
❑ Demonstrate the specified auxiliary power source is capable of powering all essential treatment units.
❑ A properly completed and executed Single -Family Residence Loading Rate Workbook.
Site Map (All Application Packages):
® Per 15A NCAC 02T .0604(d), submit standard size and II x 17-inch site maps that have been signed, sealed and dated by a
North Carolina licensed Professional Engineer and/or Professional Land Surveyor.
® For clarity, multiple site maps of the facility with cut sheet annotations may be submitted.
® At a minimum, the site map shall include the following:
❑ A scaled map of the site with topographic contour intervals not exceeding two feet and showing all facility -related
structures and fences within the wastewater treatment, storage and irrigation areas.
❑ Soil mapping units shown on all irrigation sites.
❑ The location of all wells (including usage and construction details if available), streams (ephemeral, intermittent, and
perennial), springs, lakes, ponds, and other surface drainage features within 500 feet of all wastewater treatment, storage
and irrigation sites.
❑ Delineation of the compliance and review boundaries per 15A NCAC 02L .0107(i) and .0108.
❑ Setbacks as required by 15A NCAC 02T .0606.
❑ Site property boundaries within 500 feet of all wastewater treatment, storage and irrigation sites.
❑ All habitable residences or places of public assembly within 500 feet of all treatment, storage and irrigation sites.
K. Operation and Maintenance Plan (All Application Packages):
® Per 15A NCAC 02T .0604(f), submit an operation and maintenance (O&M) plan encompassing all wastewater treatment,
storage and irrigation systems that at a minimum shall address:
❑ How to perform routine inspections.
❑ A maintenance schedule.
❑ A troubleshooting guide.
❑ A layman's explanation of the wastewater treatment, storage and irrigation systems.
❑ A crop maintenance and management plan.
® Note a final O&M Plan may be submitted with the partial and/or final Engineering Certification required under 15A NCAC
02T .0116, however, a preliminary O&M Plan shall be submitted with each application package.
L. Operation and Maintenance Agreement (All Application Packages):
® Per 15A NCAC 02T .0604(h), submit a notarized Operation and Maintenance Agreement that has been signed and dated by all
deeded property owners.
INSTRUCTIONS FOR FORM: SFRWWIS 06-16 & SUPPORTING DOCUMENTATION Page 3 of 4

M. County Health Department Denial Letter (All New Application Packages):
® Per 15A NCAC 02T .0604(g), provide a written letter from the local County Health Department denying the site for all
subsurface systems.
N. Floodway Regulation Compliance (All Application Packages where any portion of the wastewater treatment, storage and
irrigation system is located within the 100-year floodplain):
® Per 15A NCAC 02T .0105(c)(8), provide written documentation from all local governing entities that the facility is in
compliance with Article 21 Part 6 of Chapter 143 of the General Statutes (i.e., § 143-215.51. through § 143-215.61.).
O. Threatened or Endangered Aquatic Species Documentation (All Application Packages):
® Per 15A NCAC 02T .0105(c)(10), submit documentation from the Department's Natural Heritage Program demonstrating the
presence or absence of threatened or endangered aquatic species within the boundary of the wastewater treatment, storage and
irrigation facilities.
❑ If the facility directly impacts such species, this documentation shall provide information on the need for permit conditions
pursuant to 15A NCAC 02B .0110.
P. Other Environmental Permits (All Application Packages that include stream or wetland crossings):
❑ Per 15A NCAC 02T .0105(c)(6), submit a copy of either the approved permit/certification or a letter from the appropriate
review agency acknowledging receipt of the application for the following applicable permits/certifications:
❑ Division of Water Resources' Water Quality Permitting Section — Wetlands 401 Certification
❑ US Army Corps of Engineers South Atlantic Division — Nationwide 12 or Section 404 permit
❑ Per 15A NCAC 02T .0105(c)(6), this application shall be considered incomplete or the resulting permit may be issued
conditionally, if a pending issuance of any of the aforementioned permits/certifications directly impact the facility herein.
THE COMPLETED APPLICATION AND SUPPORTING DOCUMENTATION SHALL BE SUBMITTED TO:
NORTH CAROLINA DEPARTMENT OF ENVIRONMENTAL QUALITY
DIVISION OF WATER RESOURCES
WATER QUALITY PERMITTING SECTION
NON -DISCHARGE PERMITTING UNIT
By U.S. Postal Service:
1617 MAIL SERVICE CENTER
RALEIGH, NORTH CAROLINA 27699-1617
TELEPHONE NUMBER: [phone]
By Courier/Special Deliverv:
512 N. SALISBURY ST.
RALEIGH, NORTH CAROLINA 27604
FAX NUMBER: [phone]
INSTRUCTIONS FOR FORM: SFRWWIS 06-16 & SUPPORTING DOCUMENTATION Page 4 of 4

L APPLICANT INFORMATION:
1. Applicant's name as appears on deed, contract or lease agreement: Anthony Lampuri and spouse, Allison Lampuri
2. Applicant type: ® Individual ❑ Corporation ❑ General Partnership
3. Signature authority's name: Anthony Lampuri and Allison Lampuri per 15A NCAC 02T .0106(b) Title: Owners
4. Applicant's mailing address: 808 Modena Drive
City: Caa State: NC Zip: 27513-
5. Applicant's contact information:
Telephone number: [phone] Fax number: (_) _- Email Address: anthoM.lampuri#,,ablmech.com
II. FACILITY INFORMATION:
1. Facility name: Lampuri Residence
2. Facility status: ❑ Existing or ® Proposed
3. Facility's physical address: 166 Democracy Place
City: Apex State: NC Zip: 27523- County: Chatham
4. Wastewater Treatment Facility Coordinates: Latitude: 35' 44' 41" Longitude: -78' 58' 19"
Provide the following latitude and longitude coordinate determination information:
Datum: NAD83 Level of accuracy: Nearest second Method of measurement:
Aerial photog=hy with ground control
5. USGS Map Name: New Hill
III. CONSULTANT INFORMATION:
1. Engineer's name: Kevin D. Davidson License Number: 024582 Firm: Agri -Waste Technology, Inc.
Engineer's mailing address: 501 N. Salem Street, Ste 203
City: Apex State: NC Zip: 27502-2315
Telephone number: [phone] Fax number: [phone] Email Address: kdavidsonkagriwaste.com
2. Soil Scientist's name: Chistopher McGee License Number: 1324 Firm: Agri -Waste Technology, Inc.
Soil Scientist's mailing address: 501 N. Salem Street, Ste 203
City: Apex State: NC Zip: 27502-2315
Telephone number: [phone] Fax number: [phone] Email Address: cmc_ee ,agriwaste.com
IV. GENERAL REQUIREMENTS —15A NCAC 02T .0100:
1. Application type: ❑ New ® Major Modification ❑ Minor Modification
If a modification, provide the existing permit number: WQ0022810 and most recent issuance date: August 19, 2019
2. Application fee: $20. 00
3. Describe the origin of the wastewater and provide abrief project description: Residential single—family dwelling
with AdvanTex pretreatment and surface drip disposal
4. Wastewater flow: 600 GPD
FORM: SFRWWIS 06-16 Page 1 of 6

IV. GENERAL REQUIREMENTS —15A NCAC 02T .0100 (CONTINUED):
5. Using 15A NCAC 02T .0114, explain how the total wastewater flow was determined:
Establishment Type
Flow Basis
Flow
Per Unit
Number
of Units
Flow
5 Bedroom SFR (4 BDR residence + accessroy barn)
gal/day
120
5
600 GPD
gal/
GPD
Total
600 GPD
6. Per 15A NCAC 02T .0105(c)(6), if the project includes any stream or wetland crossings, what is the status of the following
applicable permits/certifications?
Permit/Certification
Date �
Droved ate
Permit/Certification No.
Agency Reviewer
Submitted
A
Nationwide 12 or 404
Wetlands 401
What is the nearest 100-year flood plain elevation to the facility'? 237.8' feet mean sea level. Source: FEMA Flood Map Number
3720070200K
Are any treatment, storage or irrigation systems located within the 100-year flood plain? ❑ Yes or ® No
If yes, has documentation of compliance with Article 21 Part 6 of Chapter 143 of the G. S. been provided? ❑ Yes or ❑ No
V. DESIGN CRITERIA AND SETBACKS —15A NCAC 02T .0605 & .0606:
1. Provide the estimated influent and designed effluent concentrations from the engineering calculations to verify conformance
with 15A NCAC 02T .0605(b) for the following parameters:
Estimated Influent
Designed Effluent
Minimum Required
Parameter
Concentration
Concentration
Degree of Treatment
(monthly average)
Prior to Stora e
Biochemical Oxygen Demand
350 mg/1
10 mg/1
< 30 mg/1
BOD5
—
Total Suspended Solids (TSS)
200 mg/1
10 mg/1
< 30 mg/1
Ammonia Nitrogen (NH3-N)
100 mg/1
10 mg/1
< 15 mg/1
Fecal ColiformsT
100 per 100 ml
T
< 200 colonies/100 ml
2. Per 15A NCAC 02T .0605(c), is the effluent placed directly in contact with GA classified groundwater? ❑ Yes or ® No
If yes, have predictive calculations demonstrating such placement will not contravene GA groundwater standards been
provided? ❑ Yes or ❑ No
3. Per 15A NCAC 02T .0605(d), are any of the treatment or storage units excavated into bedrock? ❑ Yes or ® No
If yes, has a 10 millimeter synthetic liner been provided? ❑ Yes (Plan Sheet: & Specification Page: ) or ❑ No
4. In accordance with 15A NCAC 02T .0605(e), are any earthen treatment and storage facilities provided? ❑ Yes or ® No
5. In accordance with 15A NCAC 02T .0605(f), have any by-pass or overflow lines been provided? ❑ Yes or ® No
6. If any treatment, storage or irrigation systems are located within the 100-year flood plain, in accordance with 15A NCAC 02T
.0605(g), which systems are affected and what measures being taken to protect them against flooding? N/A
7. In accordance with 15A NCAC 02T .0605(h), has an operation and maintenance planbeen submitted? ® Yes or ❑ No
8. In accordance with 15A NCAC 02T .0605(i), how will restricted access to the irrigation system be provided? Minimum Two:
Strand Fence
Are all treatment units and control panels locked to prevent entry? ® Yes or ❑ No
9. In accordance with 15A NCAC 02T .0605(i), do the designed irrigation loading rates (see Application Item VIL4.) exceed the
soil scientist recommended loading rates (see Application Item VIL3.)? ❑ Yes or ® No
10. In accordance with 15A NCAC 02T .0605(k), does the septic tank design adhere to 15A NCAC 18A .1900? ® Yes or ❑ No
FORM: SFRWWIS 06-16 Page 2 of 6

V. DESIGN CRITERIA AND SETBACKS —15A NCAC 02T .0605 & .0606 (CONTINUED):
11. In accordance with 15A NCAC 02T .0605(1), what is the specified method of disinfection? Ultraviolet
If chlorine, specify contact detention time provided: minutes and where contact time occurs:
If UV, specify the number of banks: 1 total lamps: 1 and maximum flow capacity: 6 GPM.
12. In accordance with 15A NCAC 02T .0605(m), has a minimum of five days of storage based on average daily flow between the
pump off float and inlet invert pipe been provided? ® Yes or ❑ No
13. In accordance with 15A NCAC 02T .0605(n), have all tanks containing pumps been provided with audible and visual alarms
that are external to any structure? ® Yes (Plan Sheet: WW-8 & Specification Page: See. H-6. 7) or ❑ No
14. In accordance with 15A NCAC 02T .0605(o), has a precipitation or soil moisture sensor been provided?
® Yes (Plan Sheet: WW-8 & Specification Page: See H-6. 7) or ❑ No
15. In accordance with 15A NCAC 02T .0605(p), has a minimum of 18 inches of vertical separation between the apparent seasonal
high water table (SHWT) and the ground surface been provided? ® Yes or ❑ No
16. In accordance with 15A NCAC 02T .0605(g), has a minimum of 12 inches of vertical separation between any perched seasonal
high water table (SHWT) and the ground surface been provided? ® Yes or ❑ No
17. In accordance with 15A NCAC 02T .0605(r), does the designed annual loading rate exceed 50 inches? ❑ Yes or ® No
18. Does the project comply with all setbacks found in the river basin rules (15A NCAC 02B .0200)? ® Yes or ❑ No
If no, list non -compliant setbacks:
19. Per 15A NCAC 02T .0606, verify setback compliance by providing the minimum field observed distance (ft) from the facility's
irrigation system and treatment/storage units to each listed setback parameter (Note: Distances greater than 500 feet shall be
marked N/A):
Setback Parameter
Irrigation
System
Treatment /
�Storage Units
Any habitable residence or place of assembly under separate ownership or not to be
maintained as part of the project site
444'
489'
Any habitable residence or place of assembly owned by the Permittee to be maintained as
art of the project site
18,
Any private or public water supply source
N/A
N/A
Surface waters (streams — intermittent and perennial, perennial waterbodies, and wetlands)
228'
88,
Groundwater lowering ditches (where the bottom of the ditch intersects the SHWT)
N/A
Subsurface groundwater lowering drainage systems
N/A
Surface water diversions (ephemeral streams, waterways, ditches)
42'
Any well with exception of monitoring wells
N/A
N/A
Any property line
77'
208'
Top of slope of embankments or cuts of two feet or more in vertical height
N/A
Any water line from a disposal system
N/A
Any swimming pool
57'
Public right of way
108,
Nitrification field
N/A
Any building foundation or basement
18,
20. Are any setback waivers proposed for this facility? ❑ Yes or ® No
If yes, in accordance with 15A NCAC 02T .0606(c), submit the appropriate setback waivers (FORM: NDWSW) that have
been notarized, signed by all parties involved and recorded with the County Register of Deeds. Waivers involving the
compliance boundary shall be in accordance with 15A NCAC 02L .0107.
FORM: SFRWWIS 06-16 Page 3 of 6

VI. WASTEWATER TREATMENT & STORAGE FACILITY DESIGN:
1. Type of treatment system: Septic Tank / Advantex
2. Provide the requested information for each treatment/storage unit and its associated mechanical equipment:
a. PRELIMINARY / PRIMARY TREATMENT (i.e., physical removal operations):
Treatment Unit
No. of
Units
Manufacturer or
Material
Dimensions (ft) /
Spacings (in)
Volume
(al)
Plan Sheet
Reference
Specification
Reference
Septic Tank
1
Shoaf Precast Septic
9' x 4.83' x 5.63'
1000
WW-6
Sec. H-6.1
Septic Tank
1
Shoaf Precast Septic
10.5' x 5.5'x 5.83'
1500
WW-6
Sec. H-6.1
Select
b. SECONDARY TREATMENT (i.e., physical, biological and recirculation processes):
Treatment Unit
No. of
Units
Manufacturer or
Material
Dimensions (ft)
Volume
al
Plan Sheet
Reference
Specification
Reference
Advantex Treatment
1
Orenco Systems, Inc.
8.5' x 5.17' x 7.0'
800
WW-6
Sec. H-6.5
Select
Select
c. DISINFECTION:
Treatment Unit
No. of
Manufacturer or
Dimensions (ft)
Volume
Plan Sheet
Specification
Units
Material
al
Reference
Reference
Ultraviolet
1
Orenco Systems, Inc.
3" Diameter
6 gpm
WW-9
Sec. H-6.6
Select
d. PUMP/STORAGE TANK:
Manufacturer or
Material
No. of
Units
Dimensions (ft)
Total
Voluame
Effective
Volume(gal)
Effective
Stdoarage
ys
Plan Sheet
Reference
Specification
Reference
Shoaf Precast
1
12.5' x 6.5' x 8.67'
4000
3032.55
5.05
WW-6
Sec. H-6. 1
e. PUMPS:
Location
No. of
Pumps
Purpose
Manufacturer /
Type
Capacity
Plan Sheet
Reference
Specification
Reference
GPM
I TDH
Treatment Pod
1
Recirculation
Orenco Systems, Inc.
25.0
13.25
WW-8
Sec. H-6.4
Pump Tank
1
Field Dosing
Orenco Systems, Inc.
17.0
109.0
WW-8
Sec. H-6.4
STEP Tank
1
Pump to House ST
Orenco Systems, Inc.
10
14.24
WW-8
Sec. H-6.4
f. BLOWERS:
Location
No. of
No.
Units Served
TManufacturer /
Type
Capacity
(CFM)
Plan Sheet
Reference
Specification
Reference
N/A
g. MIXERS:
Location
No. of
Mixers
Units Served
Manufacturer /
Type
Power
(h)
Plan Sheet
Reference
Specification
Reference
N/A
FORM: SFRWWIS 06-16 Page 4 of 6

VIL IRRIGATION SYSTEM DESIGN:
1. Are there any artificial drainage or water movement structures within 200 feet of the irrigation area? ❑ Yes or ® No
If yes, please explain if the Soil Evaluation addresses artificial structures and indicate if these structures are to be maintained
or modified:
2. What is the proposed cover crop? Grass/Wooded
3. Soil Evaluation recommendations:
Soil Series
Fields within Soil Area
Minimum Observed
Depth to SHWT
ft
Recommended
Loading Rate
in/hr
Recommended
Loading Rate
in/ r
Eroded/Fill Triassic Parent
Material
1
0.5
0.15
19.5
4. Irrigation System Information (Note — this table may be expanded for additional fields):
Area
Dominant
Designed
Designed
1
Latitude
1
Longitude
Waterbody
Field
(acres)
Soil Series
Rate
Rate
(DMS)
(DMS)
Stream Index
Classification
(in/hr)
(in/yr)
No.
1
0.824
Eroded/Fill Triassic
0.065
9.93
35° 44' 41"
-78° 58' 19"
16-41-(3.5)
Ws -
Parent Material
IV;B;NS W,CA
0 I II
0 I II
0 1 II
0 1 II
0 I II
0 I II
Total
' Provide the following latitude and longitude coordinate determination information:
Datum: NAD83 Level of accuracy: Nearest second Method of measurement:
Aerial photography with ground control
2 For assistance determining the waterbody stream index number and its associated classification, instructions may be
downloaded at: hlWs://ncdenr.s3.amazonaws.com/s3fs-
public/Water%20Ouality/Aquifer%2OProtection/LAU/Agreements/W S CA%2008-13 . pdf.
Spray Irrigation Design Elements
Drip Irrigation Design Elements
Nozzle wetted diameter:
ft
Emitter wetted area:
6 ft2
Nozzle wetted area:
ft2
Distance between laterals:
3 ft
Nozzle capacity:
GPM
Distance between emitters:
2 ft
Nozzle manufacturer/model:
/
Emitter capacity:
.61 GPH
Elevation of highest nozzle:
ft
Emitter manufacturer/model:
American Manufacturing
Company, Inc. / Bioline
Specification Reference:
Elevation of highest emitter:
309 ft
Fspecification Reference:
WW-4, Sec. H-6.8
FORM: SFRWWIS 06-16 Page 5 of 6

b� I
rigi eery and Soil Scientists
Agii- ante Technobgy, Rrc..
001 N, Sri&eni Sheet, SOW 203
Apex, INa th Cam]fii "00
919-859-0669
www.agriw st.e.cvn
SEAL:
Lampuri Residence WWTS
SFR Wastewater Irrigation System
Chatham County
Project Specifications
FINAL DESIGN
NOT RELEASED FOR CONSTRUCTION
� ESS �p1/SEAL
�'q�''%,,
024582
Client: Midtown Custom Homes
c/o Travis Lam
PO Box 31912
Raleigh, NC 27622
Property Location: 166 Democracy Place
Apex, NC 27523
Chatham County
Parcel: 80927
Project Engineer: Kevin D. Davidson, P.E.
Agri -Waste Technology, Inc.
501 N. Salem Street
Suite 203
Apex, NC 27502
Date: June 21, 2022
Revised 10/12/2022

Table of Contents
1.0 General Project Specifications
1.1
Project Description
1.2
Site Description
1.3
Adjacent Property
1.4
Soils and Water Table
2.0
Material Management Practices
2.1
Housekeeping
2.2
Hazardous Products
2.3
Product Safety Practices
2.3.1 Petroleum Products
2.3.2 Fertilizers
2.4
Spill Control Practices
3.0
Site Work
3.1
Construction Roads and Parking
3.2
Tree Preservation and Protection
3.3
Removal of Topsoil
3.4
Addition of Fill Material
3.5
Permanent Seeding
3.5.1 Seedbed Requirements
3.5.2 Soil Conditioner
3.5.3 Seedbed Preparation
3.5.4 Seeding
3.5. 5 Irrigation
3.5.6 Mulch all plantings immediately after seeding
3.5.7 Application of Organic Mulch
3.5.8 Anchoring Organic Mulch
3.5.9 Permanent Stabilization
4.0
Installer Specification
5.0
Material Specifications
5.1
Concrete Tanks
5.2
Piping
5.3
Electrical Requirements
6.0
Component Specifications
6.1
Concrete Tanks (Septic Tank, Pump Tank)
6.2
Access Risers
6.3
Drain Line
6.4
Pumps
6.5
AdvanTex Treatment Unit
6.6
UV Disinfection
6.7
Control Panel
6.8
Drip Components and Fence
6.9
Irrigation Headworks

1.0 General Project Specifications
1.1 Project Description
The purpose of the project is to install a wastewater treatment system and surface dripfield to
accommodate wastewater from a four -bedroom single-family residence and one -bedroom accessory
barn structure. The treatment system will consist of a step tank at the accessory barn, septic tank, an
AdvanTex Treatment unit with integral recirculation tank, UV disinfection, pump tank, irrigation
headworks, and a control panel. The surface drip irrigation system covers approximately 0.824
acres.
1.2 Site Description
The project site consists of the property located at 166 Democracy Place, Apex, NC 27523 in
Chatham County (Parcel: 80927). The residence will be located to the west side of the lot and the
accessory barn to the east side. The drip field will be located to the north of the house in the
northwestern section of the property.
There are several setbacks that have been considered for the location of the treatment unit and the
drip field. The setbacks and location of the treatment unit and dripfield are shown on the system
drawings.
1.3 Adjacent Property
The surrounding area at the residence site is rural and occupied by primarily undeveloped land and
single-family residences. The dripfield is to be located a minimum of 100' from any off -site
residence and 50' from any property line or right-of-way.
1.4 Soils and Water Table
The soil in the project area is predominately Creedmoor series and is above the groundwater table.

2.0 Material Management Practices
The following are the material management practices that will be used to reduce the risk of spills and
other accidental exposure of materials and substances to storm water runoff.
2.1 Housekeeping
The following good housekeeping practices will be followed on site during the construction project.
• An effort will be made to store only enough product required to do the job.
• All materials stored on site will be stored in a neat orderly manner in their appropriate containers
and, if possible, under a roof or other enclosure.
• Products will be kept in their original containers with the original manufacturer's label.
• Substances will not be mixed with one another unless recommended by the manufacturer.
• Whenever possible, all of a product will be used before disposing of the container.
• Manufacturer's recommendations for proper use and disposal will be followed.
• The site superintendent will inspect daily to ensure proper use and disposal of materials on site.
2.2 Hazardous Products
These practices are used to reduce the risks associated with hazardous materials:
Products will be kept in original containers unless they are not re -sealable.
Original labels and Material Safety Data Sheets (MSDS) will be retained as they provide
important product information.
If surplus product must be disposed of, the manufacturer's or local and state recommended
methods for proper disposal will be followed.
2.3 Product Safety Practices
The following product safety practices will be followed on site:
2.3.1 Petroleum Products
All on site vehicles will be monitored for leaks and receive regular preventive maintenance to reduce
the chance of leakage. Petroleum products will be stored in tightly sealed containers which are
clearly labeled.
2.3.2 Fertilizers
Fertilizers used will be applied at recommended agronomic rates. Once applied, fertilizer will be
worked into the soil to limit exposure to storm water. The contents of any partially used bags of
fertilizer will be transferred to a sealable plastic bin to avoid spills.

2.4 Spill Control Practices
The following practices will be followed for spill prevention and cleanup:
• Manufacturer's recommended methods for spill cleanup will be clearly understood and site
personnel will be made aware of the procedures and the location of the information and cleanup
supplies.
• Materials and equipment necessary for spill cleanup will be kept in the material storage area on
site. Equipment and materials will include but not be limited to brooms, dust pans, mops, rags,
gloves, goggles, kitty litter, sand, sawdust, and plastic and metal trash containers specifically for
this purpose.
• All spills will be cleaned up immediately after discovery.
• The spill area will be kept well ventilated and personnel will wear appropriate protective
clothing to prevent injury from contact with a hazardous substance.
• Spills of toxic or hazardous material will be reported to the appropriate state or local government
agency, regardless of size.
• The spill prevention plan will be adjusted to include measures to prevent this type of spill from
reoccurring and how to clean up the spill if there is another one. A description of the spill, what
caused it, and the cleanup measures will also be included.
• , the site superintendent responsible for the day-to-day site operations, will
be the spill prevention and cleanup coordinator. He will designate at least other site
personnel who will receive spill prevention and cleanup training. These individuals will each
become responsible for a particular phase of prevention and cleanup.

3.0 Site Work
The site shall be maintained in an orderly and clean fashion. Debris should be confined to a
common area and removed weekly. The minimum area needed shall be disturbed. Due to the small
footprint of the project, a formal erosion and control plan has not been developed. However,
contractor shall follow standard practices to minimize any adverse effects from the installation of the
system.
3.1 Construction Roads and Parking
Construction roads and parking areas are to be inspected periodically for condition of surface. Top -
dress with new gravel as needed. Check areas for erosion and sedimentation after runoff -producing
rains. Maintain all vegetation in a healthy, vigorous condition. Sediment -producing areas should be
treated immediately.
3.2 Tree Preservation and Protection
Some clearing of trees will be required for the installation of the drain line connecting the facility to
the treatment unit. Care shall be taken to minimize the disturbed area during installation. In spite of
precautions, some damage to protected trees may occur. In such cases, repair any damage to the
crown, trunk, or root system immediately.
- Repair roots by cutting off the damaged areas and painting them with tree paint. Spread peat
moss or moist topsoil over exposed roots.
- Repair damage to bark by trimming around the damaged area as shown in Figure 1 below,
taper the cut to provide drainage, and paint with tree paint.
- Cut off all damaged tree limbs above the tree collar at the trunk or main branch. Use three
separate cuts as shown in Figure 2 to avoid peeling bark from healthy areas of the tree.

TREE WOUND
TRIM AND TAPER
Figure 1. Trim bark wounds with a tapered cut, then apply tree paint.
COLLA
R
INCORRECT CORRECT
Figure 2. Prune damaged branches with three cuts to avoid peeling bark from the tree when tree trunk falls
from tree.
To the degree possible, the vegetation that is removed during the drain line installation shall be
shredded on site and used to cover the drain line installation. Larger material shall be removed from
the site and disposed of properly.

3.3 Removal of Topsoil
MATERIALS
Determine whether the quality and quantity of available topsoil justifies selective handling. Quality
topsoil has the following characteristics:
- Texture- loam, sandy loam, and silt loam are best; sandy clay loam, silty clay loam, clay
loam, and loamy sand are fair. Do not use heavy clay and organic soils such as peat or muck
as topsoil.
- Organic matter content- (sometimes referred to as "humic matter") should be greater than
1.5% by weight.
- Acidity- pH should be greater than 3.6 before liming, and liming is required if it is less than
6.0.
- Soluble salts- should be less than 500 ppm.
- Sodium- sodium adsorption ratio should be less than 12. The depth of material meeting the
above qualifications should be at least 2 inches. Soil factors such as rock fragments, slope,
depth to water table, and layer thickness affect the ease of excavation and spreading of
topsoil. Generally, the upper part of the soil, which is richest in organic matter, is most
desirable; however, material excavated from deeper layers may be worth storing if it meets
the other criteria listed above. Organic soils such as mucks and peats do not make good
topsoil. They can be identified by their extremely light weight when dry.
STRIPPING
Strip topsoil only from those areas that will be disturbed by excavation, filling, road building, or
compaction by equipment. A 4-6 inch stripping depth is common, but depth varies depending on the
site. Determine depth of stripping by taking soil cores at several locations within each area to be
stripped. Topsoil depth generally varies along a gradient from hilltop to toe of the slope. Put
sediment basins, diversions, and other controls into place before stripping.
STOCKPILING
Select stockpile location to avoid slopes, natural drainage ways, and traffic routes (also applies to fill
soil stockpiles). Re -spreading is easier and more economical when topsoil is stockpiled in small
piles located near areas where they will be used.
Sediment barriers- Use sediment fences or other barriers where necessary to retain
sediment.
Slope stabilization- Protect topsoil stockpiles by temporarily seeding as soon as possible.
Topsoil stockpiles with slopes steeper than 2:1 must be stabilized within 7 days, otherwise
within 14 calendar days from the last land -disturbing activity.
Permanent vegetation- If stockpiles will not be used within 90 days they must be stabilized
with permanent vegetation to control erosion and weed growth.
SITE PREPARATION
Before spreading topsoil, establish erosion and sedimentation control practices such as diversions,
and berms as needed.

Grading- Maintain grades on the areas to be topsoiled according to the approved plan and
do not alter them by adding topsoil.
Limit of subsoil- Where the pH of the existing subsoil is 6.0 or less, or the soil is composed
of heavy clays, incorporate agricultural limestone in amounts recommended by soil tests or
specified for the seeding mixture to be used. Incorporate lime to a depth of at least 2 inches
by disking or raking.
Roughening- Immediately prior to spreading the topsoil, loosen the subgrade by disking or
scarifying to a depth of at least 4 inches, to ensure bonding of the topsoil and subsoil. If no
amendments have been incorporated, loosen the soil to a depth of at least 6 inches before
spreading topsoil.
SPREADING TOPSOIL
Uniformly distribute topsoil to a minimum compacted depth of 2 inches. Do not spread topsoil
while it is frozen or muddy or when the subgrade is wet or frozen. Correct any irregularities in the
surface that result from topsoiling or other operations to prevent the formation of depressions or
water pockets. Compact the topsoil enough to ensure good contact with the underlying soil, but
avoid excessive compaction, as it increases runoff and inhibits seed germination. Light packing with
a roller is recommended where high -maintenance turf is to be established.
On slopes and areas that will not be mowed, the surface may be left rough after spreading topsoil. A
disk may be used to promote bonding at the interface between the topsoil and subsoil. After topsoil
application, follow procedures for seedbed preparation, taking care to avoid excessive mixing of
topsoil into the subsoil.
3.4 Addition of Fill Material
MATERIALS
Fill material will be placed and graded to provide a slope that matches the natural grade. Based
on the lack of surface soil at the site, approximately 14 inches of fill material will be required
across the drainfield site. Fill material shall meet the following guidelines:
1) Coarse fragments as defined by USDA (2 mm to 3.0 inches) shall not exceed 10% by
volume of the volume of the fill material.
2) Fill material shall not contain more than 5% organic matter (including leaf debris, twigs,
sticks, etc.)
3) Fill material shall not include any construction debris such as bricks, concrete,
construction wood materials, or any components or fragments of such.
4) Fill material shall classify under one of the following USDA soil texture classes: loamy
sand, sandy loam, sandy clay loam, loam, clay loam, or silt loam. Particle size analysis
may be confirmed by a third party testing laboratory if necessary.

APPLICATION
Specific fill application details may vary from site to site, for this site:
1) Vegetation 8" or less in diameter shall be removed by hand or with small tracked
equipment to prevent native soil loss and compaction.
2) Provide sufficient fill to achieve 12" separation to the SHWT.
3) Fill material is to be applied at a depth of 2-4 inches where necessary over the footprint
of the drip irrigation field.
4) Fill shall be tilled to a depth of 5-6 inches to allow it to mix and interface with the native
soil surface to prevent lateral flow.
5) Extend fill material 5 feet beyond the wetted area and blend into the natural contours.
6) Compact the fill material to 1.1-1.3 g/cm3.
7) Surface shall be graded to a final grade that matches the natural grade with 2-6% slopes
to provide uniform drainage.
8) No site work shall be done when the conditions are wet, to avoid excess compaction.
9) Avoid placing fill material around large trees to prevent tree death (an arborist can
provide more guidance on tree protection).
10) Field shall be seeded with temporary vegetation suitable for the specific time of year. If
construction is complete in the following windows, permanent seeding can take place
immediately: February 15 through April 15, or September 15 through November 15.
Once final fill has been placed, a soil fertility sample shall be taken. Seeding can occur
immediately with the following amendments:
Lime: 1.0 pound ag-grade lime per 1000 square feet
Nitrogen: 2.0 pounds N per 1000 square feet
P205: 2.0 pounds per 1000 square feet
K20: 1.0 -2.0 pounds per 1000 square feet
(A 10-10-10 or 8-8-8 blend can be used to satisfy this requirement)
The soil test recommendations will be used to supply additional amendments as needed.
Temporary seeding shall include the following species and rates: Annual ryegrass or
ryegrass blend with other small grains, at 10 pounds per 1000 square feet, lightly tilled or
raked into the top 0.5-1.0 inch of topsoil, cultipack or roll lightly, and cover with straw or
other shade cover. Follow with permanent fescue seeding in the appropriate dates, with
the September 15- October 15 window preferred.
The following soil scientist construction oversight plan is recommended to be placed as a permit
condition:
1. A preconstruction conference shall be required between the soil scientist,
project engineer, installation contractor, and permittee.
2. The soil scientist shall provide a fill placement plan to the contractor at the
preconstruction conference such that the minimum depth to SHWT, slope
stabilization, and overall grade can be established to address site concerns.
3. Contractor shall provide the soil scientist with a sample of the fill soil so that
it may be preapproved prior to site placement.
4. Soil scientist shall be present during all discing and soil incorporation
activities.

5. The soil scientist shall be required to approve the final placement of fill soil
to ensure the site has been adequately constructed.
6. Soil shall be stabilized by vegetation/grass being fully established prior to the
installation of any wastewater system components in the irrigation area.
Immediately upon placement of fill soil and prior to any potential erosion
producing rainfall even property seed/straw or erosion control mat/netting shall
be added over areas where fill has been placed.
7. All irrigation system components shall be placed by hand with the exception
of supply line trenches.
8. A soil amendment/fertilizer plan shall be provided based on a fertility
analysis of the fill material.
FERTILITY ANALYSIS
Upon addition of the fill, with subsequent tillage into the subsoil, a soil sample will be taken for
fertility analyses. Soil test recommendations will be followed for pH adjustment and nutrient
amendments for N, P, and K to help with grass establishment. Soil amendments may be applied pre
or post construction. If applied pre -construction, amendments should be tilled to a depth of 4-6
inches. See "Permanent Seeding" below.
3.5 Permanent Seeding
3.5.1 SEEDBED REQUIREMENTS
Establishment of vegetation should not be attempted on sites that are unsuitable due to inappropriate
soil texture, poor drainage, concentrated overland flow, or steepness of slope until measures have
been taken to correct these problems.
To maintain a good stand of vegetation, the soil must meet certain minimum requirements as a
growth medium. The existing soil should have these criteria:
- Enough fine-grained (silt and clay) material to maintain adequate moisture and nutrient
supply (available water capacity of at least .05 inches of water to 1 inch of soil).
- Sufficient pore space to permit root penetration.
- Sufficient depth of soil to provide an adequate root zone. The depth to rock or impermeable
layers such as hardpans should be 12 inches or more, except on slopes steeper than 2:1 where
the addition of soil is not feasible.
- A favorable pH range for plant growth, usually 6.0-6.5.
- Freedom from large roots, branches, stones, large clods of earth, or trash of any kind. Clods
and stones may be left on slopes steeper than 3:1 if they are to be hydroseeded.

If any of the above criteria are not met (i.e., if the existing soil is too coarse, dense, shallow, or acidic
to foster vegetation) special amendments are required. The soil conditioners described below may be
beneficial.
3.5.2 SOIL CONDITIONERS
In order to improve the structure or drainage characteristics of a soil, the following materials may be
added. These amendments should only be necessary where soils have limitations that make them
poor for plant growth or for fine turf establishment.
- Peat Appropriate types are sphagnum moss peat, hypnum moss peat, reed -
sedge peat, or peat humus, all from fresh -water sources. Peat should
be shredded and conditioned in storage piles for at least 6 months
after excavation.
- Sand clean and free of toxic materials.
- Vermiculite horticultural grade and free of toxic substances.
- Rotted manure stable or cattle manure not containing undue amounts of straw or
other bedding materials.
3.5.3 SEEDBED PREPARATION
Complete grading according to the approved plan before seeding. Below are steps to take in order to
prepare the seedbed for planting.
• Chisel compacted areas and spread topsoil 3 inched deep over adverse soil conditions, if
available.
• Rip the entire area to 6 inches deep (if recommended by soil scientist).
• Remove all loose rock, roots, and other obstructions leaving surface reasonably smooth and
uniform.
• Apply agricultural lime, fertilizer, and superphosphate uniformly and mix with soil (section 4.6).
• Continue tillage until a well pulverized, firm reasonably uniform seedbed is prepared 4 to 6
inches deep.
• Seed on a freshly prepared seedbed.
• Mulch immediately after seeding and anchor mulch (section 8.3).
Apply lime and fertilizer evenly and incorporate into the top 4-6 inches of soil by disking or other
suitable means. Operate machinery on the contour. When using a hydroseeder, apply lime and
fertilizer to a rough, loose surface.
Roughen surfaces. Complete seedbed preparation by breaking up large clods and raking into a
smooth, uniform surface. Fill in or level depressions that can collect water. Broadcast seed into a
freshly loosened seedbed that has not been sealed by rainfall.
3.5.4 SEEDING
Seeding dates given in the manufacturer's seeding mixture specifications are designated as "best'' or
"possible". Seedings properly carried out within the "best" dates have a high probability of success.
It is also possible to have satisfactory establishment when seeding outside these dates. However, as
you deviate from them, the probability of failure increases rapidly. Seeding on the last date shown

under "possible" may reduce chances of success by 30-50%. Always take this into account in
scheduling land -disturbing activities.
Use certified seed for permanent seeding whenever possible. Certified seed is inspected by the
North Carolina Crop Improvement Association. It meets published North Carolina Standards and
should bear an official "Certified Seed" label.
Labeling of non -certified seed is also required by law. Labels contain important information on seed
purity, germination, and presence of weed seeds. Seed must meet State standards for content of
noxious weeds. Do not accept seed containing "prohibited" noxious weed seed.
Apply seed uniformly with a cyclone seeder, drop -type spreader drill, cultipacker seeder, or
hydroseeder on a firm, friable seedbed.
When using a drill or cultipacker seeder, plant small grains no more than 1 inch deep, grasses and
legumes no more than 2 inch. Equipment should be calibrated in the field for the desired seeding
rate.
When using broadcast -seeding methods, subdivide the area into workable sections and determine the
amount of seed needed for each section. Apply one-half the seed while moving back and forth across
the area, making a uniform pattern; then apply the second half in the same way, but moving at right
angles to the first pass (Figure 13).
Cover broadcast seed by raking or chain dragging; then firm the surface with a roller or cultipacker
to provide good seed contact.
3.5.5 IRRIGATION
Moisture is essential for seed germination and seedling establishment. Supplemental irrigation can
be very helpful in assuring adequate stands in dry seasons or to speed development of full cover.
Assess the need for irrigation when the seeding is conducted.
Water application rates must be carefully controlled to prevent runoff Inadequate or excessive
amounts of water can be more harmful than no supplemental water.
3.5.6 MULCHING
Mulch all plantings immediately after seeding. Select a material based on site and practice
requirements, availability of material, labor, and equipment. Table 6.14a lists commonly used
mulches and some alternatives.
Before mulching, complete the required grading, install sediment control practices, and prepare the
seedbed. Apply seed before mulching except in the following cases:
- Seed is applied as part of a hydroseeder slurry containing wood fiber mulch.
- A hydroseeder slurry is applied over straw.
3.5.7 APPLICATION OF ORGANIC MULCH

Organic mulches are effective where they can be tacked securely to the surface.
Spread mulch uniformly by hand, or with a mulch blower. When spreading straw mulch by hand,
divide the area to be mulched into sections of approximately 1,000 ft2, and place 70-90 lb of straw (1
to 2 bales) in each section to facilitate uniform distribution (See Table below). After spreading
mulch, no more than 25% of the ground surface should be visible. In hydroseeding operations, a
green dye, added to the slurry, assures a uniform application.
3.5.8 ANCHORING ORGANIC MULCH
Straw mulch must be anchored immediately after spreading using vegetation.
Rye (grain) may be used to anchor mulch in fall plantings, and German millet in spring. Broadcast at
15 lb/acre before applying mulch.
3.5.9 PERMANENT STABILIZATION
Permanent stabilization is needed in graded or cleared areas subject to erosion and where a
permanent, long-lived vegetative cover is needed. Typically, disturbed portions of a site where
construction activities have permanently ceased will be stabilized with permanent seeding no later
than 14 days after the last construction activity. This method will not provide erosion control cover
or prevent soil slippage on soils that are not stable due to soil texture or structure, water movement
or excessively steep slopes. In some areas, it may be necessary to install erosion or sediment control
practices such as dikes, contour ripping, erosion stops, channel liners, sediment basins, diversions,
subsurface drainage, or other practices.
Prior to seeding, 1,000 lbs/ac of a 12-12-12 or equivalent fertilizer and lime according to soil test or
in lieu of soil test, 4,000 lbs/ac of ground agricultural limestone shall be worked into the soil to a
depth of 3 inches.
Seed should be applied uniformly at a depth of 1/4 to 2 inch with appropriate equipment. Except on
very flat slopes and ideal seeding conditions, small grain straw should be applied at a rate of 3,000 to
4,000 lbs/ac using appropriate mulch anchoring techniques. Other mulch materials can be used
except under adverse conditions or steep slopes; grain straw should be adequate.

4.0 Installer Specification
- Installer to maintain Class IV installer License per NCOWCICB.
- Installer to document installation history of advanced pretreatment systems and surface
application systems.

5.0 Material Specifications
5.1 Concrete Tanks
All concrete tanks are to be State approved tanks.
5.2 Piping
All drainlines and piping to be SCH 40 PVC. Non -pressure drain lines can be DWV.
Sweeping style elbows to be used on gravity lines. All pressure lines to be pressure rated
SCH 40 PVC. All pressure lines to be cut with a hand ratcheting style cutter or wheel style
cutter. PVC saws shall not be used to cut pressure pipe.
5.3 Electrical Requirements
Installer shall install all electrical fittings from the control panel to the individual treatment
components and pumps. Installation shall be in accordance with manufacturer's
specifications. Qualified electrician or local power utility shall bring power to panel and
energize panel.

6.0 Component Specifications (information following)
6.1 Concrete Tanks (Septic Tank, Pump Tank)
- All concrete tanks to be State Approved Tank.
- All tank seams to be sealed with butyl rubber sealant.
- Backfill and compact soil around tank with a "jumping jack" style compactor.
- Following installation, tanks to be vacuum and water tested. Passing criteria as follows:
- Vacuum Test 5 in Hg for 2 min with <0.5 in Hg
- Water Test 10 gallons/1000 gallons/24 hr period
- Tanks to be installed level on 6" gravel base (#57 stone)
- All penetrations to be cast in place rubber boots for inflow and outflow penetrations.
- All tanks to have cast in place riser adapters for Orenco Risers.
6.2 Access Risers
- Install risers per manufacturer's specifications.
- All Orenco risers to extend minimum 6" above grade.
- All electrical conduits to be sealed with duct seal.
- Penetrations thru risers to use grommets or bulk head fitting.
- All tank risers that do not contain an inner lid shall be equipped with a safety net.
6.3 Drain Line
- All gravity drain line to be 4" SCH 40 PVC, DWV.
- Elbows to be sweeping style fitting.
6.4 Pumps
- Install pumps per system drawing and manufacturers specifications (included).
- Piping to be SCH 40 Pressure Pipe.
6.5 AdvanTex Treatment Unit
- Install unit per manufacturers specifications (included).
- Install with 12" lid extension if needed.
- Install unit on 6" gravel base.
6.6 UV Disinfection
- Install UV disinfection per system drawing and manufacturers specifications (included).

6.7 Control Panel
- Install per system drawing and manufacturers specifications (included).
- Panel to include audible and visual alarms.
- Panel to be minimum 24" above grade.
- Seal all pipes with duct seal
- Panel to be mounted on 4" x 6" (minimum) pressure treated post.
- Install Rain Sensor on control panel enclosure.
6.8 Drip Field
- Install drip field per system drawings.
- Drip field shall be cleared of small brush, debris and vegetation by hand or with small
tracked equipment.
- Install perimeter fence per system drawings.
6.9 Irrigation Headworks
- Install headworks per system drawing.
- Install headworks on 6" gravel base.

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Engineers afid SoH Scientists
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Apex, No fl n to o okn° a 27502
WWW aghiwaste,corn
Soil Suitability for Single -
Family Residence Wastewater
Irrigation Systems
166 Democracy Place
Apex, NC 27523
Chatham County
(Parcel: 80927)
Prepared For: Anthony Lampuri (Owner)
Travis Lam (Midtown Custom Homes)
Prepared By: Christopher E. McGee, LSS
Sr. Soil Scientist
Report Date: June 21, 2022
Revised: October 12, 2022

Eingin�rs and Soil Scientists
Agri -Waste TedinoWo yf iric.
Apex„ Nor l'i Caroliria "? 7 a
919-859-0669
Soil Suitability for Single -Family Residence Wastewater Irrigation Systems
166 Democracy Place, Apex, NC 27523
Chatham County, NC (Parcel: 80927)
PREPARED FOR: Anthony Lampuri (Owner)
Travis Lam (Midtown Custom Homes)
PREPARED BY: Christopher E. McGee, LSS
Sr. Soil Scientist
DATE: June 21, 2022
REVISED: October 12, 2022
Soil suitability for a new single-family residence wastewater irrigation system was evaluated in
April through July 2021 for property located at the intersection of Democracy Place and
Settlement Drive in Chatham County (Heritage Pointe Subdivision). Chris McGee and Heath
Clapp of Agri -Waste Technology, Inc. (AWT) conducted the preliminary and detailed soil
evaluation, as well as the subsequent Saturated Hydraulic Conductivity (KsaT) tests. Municipal
water and wastewater services are not available; therefore, on -site wastewater disposal and a
drinking water well will be required. The property is currently permitted under NC DEQ-DWR
non -discharge permit number WQ0022810; however, the system is not installed. The owners are
now ready to begin building a single-family residence. The soil and site conditions have been
altered extensively; therefore, AWT is recommending a complete redesign and re -permitting of
the wastewater system specified in WQ0022810.
The subject property is approximately 11 acres in size. Reference property maps, provided by
Chatham GIS and the recorded property subdivision plat, are included in Attachment 1. The
recorded plat shows the location of the current permitted irrigation field. The property originally
contained a mix of pine trees and established hardwoods; however, it was graded and cleared
within the past two years. Several feet of soil have been removed throughout the proposed
irrigation area. The conditions under which WQ0022810 were permitted are no longer present.
A pond is located near the northeast corner of the lot. No remaining surface waters were noted.
The property slopes generally from west down to the east. Topography/landscape position for
wastewater systems is generally favorable near the northwest corner of the lot. Slopes range
from 2-10% and surface water runoff does not appear to be a concern from upslope areas. Based
on the amount of disturbance and other alterations to the property, there does not appear to be

any other location on the lot which would reasonably support a new wastewater irrigation system
in any better manner.
Soils on the property are unsuitable for any subsurface on -site wastewater system; therefore, a
surface application system will be required. The property has been previously denied a septic
system permit for a single-family residence by the Chatham County Environmental Health
Department, which necessitated the need for the original non -discharge permitted from NC
DEQ-DWR.
A 5-bedroom single family residence is proposed for construction on the property. After
conducting a preliminary evaluation of the entire parcel, an area located near the northwest
corner was selected for a surface irrigation system (generally the same location as the previously
permitted irrigation field). AWT's evaluation maps are included in Attachment 2. Due to the
size of the lot and proximity to neighboring parcels, drip dispersal will be required.
The drawing in Attachment 3 details the locations of the relevant site features/setbacks, proposed
soils area for irrigation, and saturated hydraulic conductivity (KsaT) test locations. The USDA-
NRCS mapped soil type for the proposed irrigation area is Creedmoor series. The actual soil
conditions observed do not match any mapped soil series because several feet of soil have been
graded off the site. The current surface is compacted Triassic saprolite and parent materials.
Various amounts of fill have also been deposited. In general, soil characteristics within the
proposed system utilization area were consistent and no significant inclusions or deviations from
these conditions were noted in any borings within the proposed irrigation area by AWT.
Numerous borings were performed throughout the area, with the major limitation for wastewater
utilization being depth to expansive clay mineralogy and seasonal high-water table (SHWT).
The depth to a restrictive layer (clay accumulation and massive structure) is generally very
shallow (1-3 inches). The depth the SHWT was estimated to be 6 inches throughout the
proposed area of utilization, with small areas of micro -topography or ruts that may require the
additional fill soil. Due to the extremely restrictive site conditions, at least 12 inches of fill soil
is recommended for this site to maintain at the proper separation to the SHWT and to establish
an infiltrative cover for vegetation to grow (grass is recommended).
A detailed description of a typical profile within the proposed application area is shown below.
Written descriptions of borings performed at each KsaT test location are detailed in Attachment
4. A standard soil fertility sample was obtained for the surface horizon and is included in
Attachment 5.
AWT Typical Profile — Lampuri Surface Irrigation System Utilization Area
Nose slope and side slope landscape position (2-6% slope)
SHWT is estimated to vary between 3 and 9 inches (average is 6 inches). Variation in thickness
and depths of each horizon were noted across site.
Fill— 1 to 6 inches (varies), eroded/washed sediments from land clearing. SHWT is estimated
to be at the interface of fill and B/C horizon
2

B/C 6 to 16 inches, brown (7.5YR 4/4) to reddish yellow (5YR 6/8) Silty Clay Loam; many
coarse prominent light gray (7.5YR 7/1), and red (2.5R 4/8) mottles; weak angular blocky
structure; very firm; sticky; very plastic
Cl 16 to 56 inches, reddish yellow (7.5YR 6/6) sandy loam; common medium distinct light
gray (7.5YR 7/1), dark yellowish brown (IOYR 4/8), and reddish brown (5YR 5/3)
mottles; massive structure; very firm; slightly sticky; slightly plastic
C2 56 to 84 inches, light gray (lOYR 7/1) sandy loam; common medium distinct dark
yellowish brown (IOYR 4/8), reddish yellow (7.5YR 6/8), and reddish brown (5YR 5/3)
mottles; massive structure; very firm; slightly sticky; slightly plastic
Saturated Hydraulic Conductivity (KsaT) Tests
A total of three KsaT tests were conducted during the field work phase of the project. The
purpose of these tests was to determine permeability within the most restrictive soil horizon. The
depth to this horizon varied depending on landscape position and desire to keep the test water
column retained within the most limiting zone. All tests were performed with a Johnson
Permeameter. The results are summarized below. The calculation sheets and any supporting
documents are included in Attachment 6. Results have been rounded to three decimal places.
'able 1. Saturated Hvdraulic Conductivity (KsaT) Data
i
-----inches----- ----- in/hr-----
1 43 0.752
2 25 0.005
3 1 25 0.006
Geometric Mean T 0.028
Loading Rate and Dripfield Computations and Recommendations
Based on the KsaT data, a permeability rate of 0.028 inches per hour (geometric mean of the 3
KsaT measurements) is recommended to be used in the water balance computation for this
system. The wastewater irrigation rate shall be determined using the above KsaT data in
accordance with the Single -Family Residence Wastewater Irrigation System Loading Rate
Calculation Policy and the Single -Family Residence Loading Rate Workbook. Based on the
amount of site disturbance and loss of natural conditions we recommend a drainage coefficient of
0.10 not be exceeded. The current SFR irrigation policy allows a drainage coefficient of up to
1.0 be used. The instantaneous application rate should not exceed 0.15 inches per hour. Local
precipitation data should be considered as part of the loading rate workbook.
As part of the water balance, the approximate land area required for an irrigation system is
calculated based on the size of the proposed residence and the loading rate of the soil. Based on
AWT's soil mapping of the proposed utilization area, approximately 35,921 sq. ft. of usable area
is available for the dripfield. The recommended annual hydraulic loading rate is 19.5 inches per
year or less. This represents the lowest rate of SFR-B group soils (19.5 to 26 inches per year).
The area evaluated and suitable for the proposed system is greater than the required minimum
size.
3

At least 12 inches of suitable fill cover soil is required across the entirety of the drip field. Any
rutted or low-lying areas may require additional fill. Final determination will be made by the
contractor and soil scientist. Low areas should be filled so that no water collects or ponds.
Allowances should be made for settling of the soil. The present soil surface texture is fine
texture silty clay loam to clay loam and does not offer an adequate infiltrative environment. Fill
material shall have the following characteristics:
• Coarse fragments as defined by USDA (2 mm to 3.0 inches) shall not exceed 10% by
volume of the volume of the fill material.
• Fill material shall not contain more than 5% organic matter (including leaf debris, twigs,
sticks, etc.)
• Fill material shall not include any construction debris such as bricks, concrete,
construction wood materials, or any components or fragments of such
• Sandy Loam to Loam texture soil (to be preapproved by North Carolina L.S.S.) will need
to be added across the entirety of the irrigation field such that a minimum of 12" will be
present after allowing settling and incorporation.
• To facilitate infiltration, discing of the site will be a requirement along with incorporating
the fill material into a disc depth of 4 inches below existing grade. The L.S.S. will ensure
the site is adequately dry and raked so that full incorporation can be achieved.
• It is expected that upwards of 14-16 inches of soil will need to be provided in order to
allow for the 12 inches of separation to be achieved.
• On the lower portion of the system where the slope exceeds 15%, the fill depth will be
increased such that the final grade will be uniform across the top of the irrigation field at
a slope of less than 10% across the whole field. This will mean a significant amount of
fill soil required across the eastern portion of the field and an appropriate slope of 3:1
should be established around the entire perimeter to help account for any subsurface
lateral flow.
The following soil scientist construction oversight plan is recommended to be placed as a permit
condition:
1. A preconstruction conference shall be required between the soil scientist,
project engineer, installation contractor, and permittee.
2. The soil scientist shall provide a fill placement plan to the contractor at the
preconstruction conference such that the minimum depth to SHWT, slope
stabilization, and overall grade can be established to address site concerns.
3. Contractor shall provide the soil scientist with a sample of the fill soil so that
it may be preapproved prior to site placement.
4. Soil scientist shall be present during all discing and soil incorporation
activities.
5. The soil scientist shall be required to approve the final placement of fill soil to
ensure the site has been adequately constructed.
6. Soil shall be stabilized by vegetation/grass being fully established prior to the
installation of any wastewater system components in the irrigation area.
Immediately upon placement of fill soil and prior to any potential erosion
F

producing rainfall even property seed/straw or erosion control mat/netting
shall be added over areas where fill has been placed.
7. All irrigation system components shall be placed by hand with the exception
of supply line trenches.
8. A soil amendment/fertilizer plan shall be provided based on a fertility analysis
of the fill material.
Summary:
AWT is recommending a surface drip irrigation system to serve the proposed single-family
residence. The proposed system must satisfy the design criteria outlined in 15A NCAC 02T
.0605.
Summary design considerations:
1) Geometric Mean of Saturated Hydraulic Conductivity: 0.028 inches/hour
2) Water Balance Drainage Coefficient: 10% (or less)
3) Maximum Instantaneous Infiltration Rate: 0.15 inches/hour
4) Maximum yearly loading: 19.5 inches/year (or less) — depends on water balance
5) Area available for proposed wastewater dripfield: 35,921 square feet
6) Fill material — shall be placed with absolute adherence to the fill plan outlined above.
We appreciate the opportunity to assist you in this matter. Please contact us with any questions,
concerns, or comments.
Sincerely,
Christopher E. McGee
5

ATTACHMENT 1: Current Plat/GIS Map

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ATTACHMENT 2: AWT Evaluation Map

ATTACHMENT 3: Site Plan Drawing

ATTACHMENT 4: Profile Descriptions

Applicant: Lampuri
Address: c/o AWT
Parcel ID#: 80927
Property Recorded: Yes
County: Chatham
SOIL/SITE EVALUATION
FOR
ON -SITE WASTEWATER SYSTEM
Owner: X Agent: —Phone:
Dates Evaluated: April — July 2021
Proposed Facility: Single Family Residence
Property Size: —11 acres
Location Site: 166 Democracy Place, Apex, NC 27523
Water Supply: On Site Well Comm. Well_ Public X Other_ Evaluation Method: Auger Boring: X Pit
PROFILE 1: KSAT Test Location #1— Side Slope Landscape (5% Slope)
Horizon/
Depth (IN)
Matrix
Mottles
Mottle
Abundance
/ Contrast
(a)(1)
Texture
(a)(2)
Structure
(a)(3)
Minerology
Consistence
(Wet)
Consistence
(Moist)
B/C 0-16"
10YR 4/3
10YR 7/1, 2.5YR 4/6
3, m, P
SiCL-CL
w/ABK
EXP
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VFi
C 16-55+"
5YR 5/6
7.5YR 8/1, 2.5YR 4/8
3, m, P
SL
M
SEXP
SS, SP
VFi
Comments: Most Restrictive Horizon KSAT Test, Depth 43"
PROFILE 2: KSAT Test Location #2 — Side Slope Landscape (3% Slope)
Horizon/
Depth (IN)
Matrix
Mottles
Mottle
Abundance
/ Contrast
(a)(1)
Texture
(a)(2)
Structure
(a)(3)
Minerology
Consistence
(Wet)
Consistence
(Moist)
B/C 0-21"
7.5YR 4/4
10YR 7/1, 5YR 5/6
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SiCL
M
EXP
S, VP
VFi
C 21-37+"
5YR 5/6
10YR 8/1, 2.5YR 4/8
3, m, P
SL
M
SEXP
SS, SP
Fi
Comments: Most Restrictive Horizon KSAT Test, Depth 25"

PROFILE 3: KSAT Test Location #3 — Nose Sloue Landscaue (8% Sloue)
Horizon/
Depth (IN)
Matrix
Mottles
Mottle
Abundance
/ Contrast
(a)(1)
Texture
(a)(2)
Structure
(a)(3)
Minerology
Consistence
(Wet)
Consistence
(Moist)
Fill 6-0
B/C 0-19"
10YR 4/3
10YR 7/1, 5YR 5/6
3, m, P
SiCL
M
EXP
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Fi
C 19-37+"
7.5YR 4/4
10YR 8/1, 2.5YR 4/8
3, m, P
SL
M
SEXP
SS, SP
VFi
Comments: Most Restrictive Horizon KSAT Test, Depth 25"
EVALUATED BY: Chris McGee, LSS
COMMENTS:

LEGEND OF ABBREVIATIONS FOR SOIL/SITE EVALUATION FORM
LANDSCAPE POSITION
CC
— Concave Slope
CV
— Convex Slope
DS
— Debris Slump
D —
Depression
DW — Drainage Way
FP
— Flood Plain
FS
— Foot Slope
H —
Head Slope
I —
Interfluve
L —
Linear Slope
N —
Nose Slope
P —
Pocosin
R —
Ridge
S —
Shoulder
T —
Terrace
MOIST CONSISTENCE
VFr
— Very Friable
Fr —
Friable
Fi —
Firm
VFi
— Very Firm
EFi
— Extremely Firm
STRUCTURE
G — Single Grain
M — Massive
CR — Crumb
GR — Granular
SBK — Subangular Blocky
ABK — Angular Blocky
PL — Platy
PR — Prismatic
(w in front denotes "weak")
WET CONSISTENCE
NS — Non Sticky
SS — Slightly Sticky
S — Sticky
VS — Very Sticky
NP — Non Plastic
SP — Slightly Plastic
P — Plastic
VP — Very Plastic
MOTTLES
1 —Few
2 — Common
3 — Many
f — Fine
m — Medium
c — Coarse
F — Faint
D — Distinct
P — Prominent
MINERALOLOGY
NEXP — Non Expansive
SEXP — Slightly Expansive
EXP — Expansive

ATTACHMENT 5: NCDA Soil Fertility Analysis

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ATTACHMENT 6: KsaT Information

Constant -Head Borehole Permeameter Test
Solution: USER 7300-89 Condition I (Deep WT or Impermeable layer)
File Name.....:
USBR-7300-89-Cond. I
Project Name........:
Project No .............:
Project Location...:
Lampuri Residence
Midtown Custom Homes
Democracy PI/Settlement Dr (Chatham Co.
Boring No...........:
Investigators......:
Date ...................:
Ksat 1
C. McGee, H. Clapp
June 25, 2021
Solution and Terminology (USBR 7300-89 Condition I)*
KB = QV/(2nHz)[InfH/r+((H/r)z+1)0 1-((H/r)z+1)"/(H/r)+1/(H/r))]
where:
Boring Depth.........:
Boring Diameter...:
Boring Radius r.....:
Soil/Water Tmp. T:
Dyn. Visc. @ T......:
43 in (Specify units)
8.9 cm
4.45 cm
25 *C
0.000891 kg/m•s
WCU Base Ht. h:
WCU Susp. Ht. S:
Const. Wtr. Ht. H:
H/r**.................:
Dyn. Visc. @ TB.:
10.0 cm***
15.2 cm
25.2 cm
5.7
0.000891 kg/m•s
KB: (Coefficient of Permeability) @ base Tmp.
TB °C: 25
Q: Rate of flow of water from the borehole
H: Constant height of water in the borehole
r: Radius of the cylindrical borehole
V: Dynamic viscosity of water @ T 'C/Dyn. Visc. of water @ TB °C
VOLUME
ml
Volume Out
(ml)
TIME
h:mm:ssA/P
Interval Elapsed Time
Flow Rate Q
(ml/min)
I --------------------- KB Equivalent Values --------------------------
(hr:min:sec) (min)
(pm/sec) I (cm/sec) (cm/day) I (in/hr) I (ft/day)
Start Soak
6:38:00 AM
3,250
#VALUE!
6:59:00 AM
0:21:00
21.00
#VALUE!
#VALUE!
#VALUE!
#VALUE!
#VALUE!
#VALUE!
2,055
1,195
7:09:00 AM
0:10:00
10.00
119.50
8.0
7.95E-04
68.7
1.13
2.25
refill
#VALUE!
#VALUE!
#VALUE!
#VALUE!
#VALUE!
#VALUE!
#VALUE!
3,250
#VALUE!
7:26:00 AM
#VALUE!
#VALUE!
#VALUE!
#VALUE!
#VALUE!
#VALUE!
1,850
1,400
7:39:00 AM
0:13:00
13.00
107.69
7.2
7.17E-04
61.9
1.02
2.03
refill
#VALUE!
#VALUE!
#VALUE!
#VALUE!
#VALUE!
#VALUE!
#VALUE!
3,250
#VALUE!
7:57:00 AM
#VALUE!
#VALUE!
#VALUE!
#VALUE!
#VALUE!
#VALUE!
2,110
1,140
8:09:00 AM
0:12:00
12.00
95.00
6.3
6.32E-04
54.6
0.90
1.79
refill
#VALUE!
#VALUE!
#VALUE!
#VALUE!
#VALUE!
#VALUE!
#VALUE!
3,250
#VALUE!
8:32:00 AM
#VALUE!
#VALUE!
#VALUE!
#VALUE!
#VALUE!
#VALUE!
2,650
600
8:39:00 AM
0:07:00
7.00
85.71
5.7
5.70E-04
49.3
0.81
1.62
45
2,605
9:09:00 AM
0:30:00
30.00
86.83
5.8
5.78E-04
49.9
0.82
1.64
refill
#VALUE!
#VALUE!
#VALUE!
#VALUE!
#VALUE!
#VALUE!
#VALUE!
3,250
#VALUE!
9:09:00 AM
#VALUE!
#VALUE!
#VALUE!
#VALUE!
#VALUE!
#VALUE!
840
2,410
9:39:00 AM
0:30:00
30.00
80.33
5.3
5.35E-04
46.2
0.76
1.52
refill
#VALUE!
#VALUE!
#VALUE!
#VALUE!
#VALUE!
#VALUE!
#VALUE!
3,250
#VALUE!
9:39:00 AM
#VALUE!
#VALUE!
#VALUE!
#VALUE!
#VALUE!
#VALUE!
870
2,380
10:09:00 AM
0:30:00
30.00
79.33
5.3
5.28E-04
45.6
0.75
1.50
refill
#VALUE!
#VALUE!
#VALUE!
#VALUE!
#VALUE!
#VALUE!
#VALUE!
3,2501
#VALUE!
10:09:00 AM
#VALUE!
#VALUE!
#VALUE!
#VALUE!
#VALUE!
#VALUE!
8601
2,390
10:39:00 AM
0:30:00
30.00
79.67
5.3
5.30E-04
45.8
0.75
1.50
Natural Moisture.......:
USDA Txt./USCS Class:
Struct./% Pass. #200..:
Moist
C
Consistency ...............:
Water Table Depth...:
Init. Saturation Time.:
VS, VP
not encountered
Total Time
(min)
Enter KB Value:
5.31E+00
5.31E-041
45.91
0.75
1.50
Averaged last 3 readings
183.00
*USBR 7300-89. Condition I exists when the distance from the water surface in the borehole to the water table or an impermiable layer is >_3X the depth of the water in the borehole. **H/r>_5 - <10. ***Model JP-M1: h =
15cm, Model JP-M2 (3"): h = 10cm, Model JP-JR2 (2") h = 17cm. Johnson Permeameter, L-C. Revised 12/04/2015
Flow Rate Q vs. Total Elapsed Time
140.00
E
E
120.00
a
d
m
3
0
100.00
80.00
LL
60.00
40.00
20.00
0.00
0 20 40 60
Total Elapsed Time (min)
80
100 120 140 160 180
200

Constant -Head Borehole Permeameter Test
Solution: USER 7300-89 Condition I (Deep WT or Impermeable layer)
File Name.....: USBR-7300-89-Cond. I
Project Name........:
Project No .............:
Project Location...:
Lampuri Residence
Midtown Custom Homes
Democracy PI/Settlement Dr (Chatham Co.
Boring No...........:
Investigators......:
Date ...................:
Ksat 2
C. McGee, H. Clapp
June 25, 2021
Solution and Terminology (USBR 7300-89 Condition I)*
KB = QV/(2nHz)[InfH/r+((H/r)z+1)0 1-((H/r)z+1)"/(H/r)+1/(H/r))]
where:
Boring Depth.........:
Boring Diameter...:
Boring Radius r.....:
Soil/Water Tmp. T:
Dyn. Visc. @ T......:
25 in (Specify units)
8.9 cm
4.45 cm
25 *C
0.000891 kg/m•s
WCU Base Ht. h:
WCU Susp. Ht. S:
Const. Wtr. Ht. H:
H/r**.................:
Dyn. Visc. @ TB.:
10.0 cm***
15.2 cm
25.2 cm
5.7
0.000891 kg/m•s
KB: (Coefficient of Permeability) @ base Tmp. TB °C: 25
Q: Rate of flow of water from the borehole
H: Constant height of water in the borehole
r: Radius of the cylindrical borehole
V: Dynamic viscosity of water @ T 'C/Dyn. Visc. of water @ TB °C
VOLUME
ml
Volume Out
(ml)
TIME
h:mm:ssA/P
Interval Elapsed Time
Flow Rate Q
(ml/min)
I --------------------- KB Equivalent Values --------------------------
(hr:min:sec) (min)
(pm/sec) I (cm/sec) (cm/day) (in/hr) (ft/day)
Start Soak
6:40:00 AM
3,245
#VALUE!
7:10:00 AM
0:30:00
30.00
#VALUE!
#VALUE!
#VALUE!
#VALUE!
#VALUE!
#VALUE!
3,240
5
7:40:00 AM
0:30:00
30.00
0.17
0.0
1.11E-06
0.1
0.00
0.00
3,220
20
8:10:00 AM
0:30:00
30.00
0.67
0.0
4.44E-06
0.4
0.01
0.01
3,205
15
8:40:00 AM
0:30:00
30.00
0.50
0.0
3.33E-06
0.3
0.00
0.01
3,185
20
9:10:00 AM
0:30:00
30.00
0.67
0.01
4.44E-06
0.4
0.01
0.01
3,170
15
9:40:00 AM
0:30:00
30.00
0.50
0.0
3.33E-06
0.3
0.00
0.01
3,155
15
10:10:00 AM
0:30:00
30.00
0.50
0.0
3.33E-06
0.3
0.00
0.01
3,140
15
10:40:00 AM
0:30:00
30.00
0.50
0.0
3.33E-06
0.3
0.00
0.01
Natural Moisture.......:
USDA Txt./USCS Class:
Struct./% Pass. #200..:
Moist
C
Consistency ...............:
Water Table Depth...:
Init. Saturation Time.:
VS, VP
not encountered
Total Time
(min)
Enter KB Value:
3.33E-02
3.33E-061
0.31
0.00
0.01
Averaged last 3 readings
240.00
*USBR 7300-89. Condition I exists when the distance from the water surface in the borehole to the water table or an impermiable layer is >_3X the depth of the water in the borehole. **H/r>_5 - <10. ***Model JP-M1: h =
15cm, Model JP-M2 (3"): h = 10cm, Model JP-JR2 (2") h = 17cm. Johnson Permeameter, L-C. Revised 12/04/2015
Flow Rate Q vs. Total Elapsed Time
0.70
E
E
0.60
a
d
m
3
0
0.50
0.40
LL
0.30
0.20
0.10
0.00
0 50 100
Total Elapsed Time (min)
150
200 250 300

Constant -Head Borehole Permeameter Test
Solution: USER 7300-89 Condition I (Deep WT or Impermeable layer)
File Name.....: USBR-7300-89-Cond. I
Project Name........:
Project No .............:
Project Location...:
Lampuri Residence
Midtown Custom Homes
Democracy PI/Settlement Dr (Chatham Co.
Boring No...........:
Investigators......:
Date ...................:
Ksat 3
C. McGee, H. Clapp
June 25, 2021
Solution and Terminology (USBR 7300-89 Condition I)*
KB = QV/(2nHz)[InfH/r+((H/r)z+1)0 1-((H/r)z+1)"/(H/r)+1/(H/r))]
where:
Boring Depth.........:
Boring Diameter...:
Boring Radius r.....:
Soil/Water Tmp. T:
Dyn. Visc. @ T......:
25 in (Specify units)
8.9 cm
4.45 cm
25 *C
0.000891 kg/m•s
WCU Base Ht. h:
WCU Susp. Ht. S:
Const. Wtr. Ht. H:
H/r**.................:
Dyn. Visc. @ TB.:
10.0 cm***
15.2 cm
25.2 cm
5.7
0.000891 kg/m•s
KB: (Coefficient of Permeability) @ base Tmp. TB °C: 25
Q: Rate of flow of water from the borehole
H: Constant height of water in the borehole
r: Radius of the cylindrical borehole
V: Dynamic viscosity of water @ T 'C/Dyn. Visc. of water @ TB °C
VOLUME
ml
Volume Out
(ml)
TIME
h:mm:ssA/P
Interval Elapsed Time
Flow Rate Q
(ml/min)
I --------------------- KB Equivalent Values --------------------------
(hr:min:sec) (min)
(pm/sec) I (cm/sec) (cm/day) (in/hr) I (ft/day)
Start Soak
6:20:00 AM
3,250
#VALUE!
6:41:00 AM
0:21:00
21.00
#VALUE!
#VALUE!
#VALUE!
#VALUE!
#VALUE!
#VALUE!
3,140
110
7:11:00 AM
0:30:00
30.00
3.67
0.2
2.44E-05
2.1
0.03
0.07
3,100
40
7:41:00 AM
0:30:00
30.00
1.33
0.1
8.87E-06
0.8
0.01
0.03
3,075
25
8:11:00 AM
0:30:00
30.00
0.83
0.1
5.55E-06
0.5
0.01
0.02
3,050
25
8:41:00 AM
0:30:00
30.00
0.83
0.1
5.55E-06
0.5
0.01
0.02
3,030
20
9:11:00 AM
0:30:00
30.00
0.67
0.0
4.44E-06
0.4
0.01
0.01
3,010
20
9:41:00 AM
0:30:00
30.00
0.67
0.0
4.44E-06
0.4
0.01
0.01
2,995
15
10:11:00 AM
0:30:00
30.00
0.50
0.0
3.33E-06
0.3
0.00
0.01
2,970
25
10:41:00 AM
0:30:00
30.00
0.83
0.1
5.55E-06
0.5
0.01
0.02
Natural Moisture.......:
USDA Txt./USCS Class:
Struct./% Pass. #200..:
Moist
C
Consistency ...............:
Water Table Depth...:
Init. Saturation Time.:
VS, VP
not encountered
Total Time
(min)
Enter KB Value:
4.44E-02
4.44E-061
0.41
0.01
0.01
Averaged last 3 readings
261.00
*USBR 7300-89. Condition I exists when the distance from the water surface in the borehole to the water table or an impermiable layer is >_3X the depth of the water in the borehole. **H/r>_5 - <10. ***Model JP-M1: h =
15cm, Model JP-M2 (3"): h = 10cm, Model JP-JR2 (2") h = 17cm. Johnson Permeameter, L-C. Revised 12/04/2015
Flow Rate Q vs. Total Elapsed Time
4.00
E
E
a
d
3.50
3.00
m
K
0
2.50
.2
2.00
1.50
1.00
0.50
0.00
0 50 100
Total Elapsed Time (min)
150
200 250 300

Lampuri Residence (Midtown Custom Homes) - Settlement Drive/Democracy Place
KcnT 1
Depth = 43 in
Ksat= 0.752 in/hr
11.25 gal/day/ftZ
KcnT 2
Depth = 25 in
Ksat= 0.005 in/hr
0.07 gal/day/ftZ
KcnT 3
Depth = 25 in
Ksat= 0.006 in/hr
0.09 gal/day/ftZ
Geometric Mean 0.028 in/hr
Geometric Mean 0.423 gal/day/ftZ