HomeMy WebLinkAboutEHPR-11-2022-42695.TIF (4'
catawba county
public health
AUTHORIZATION OF REFUND
Date: 1/31/2023
Case#: EHPR-11-2022-42695
Applicant: Dakota Bowman
Refund Amount: S300
Refund Reason: Application denied. Connecting to public sewer. Refund AC fee
Authorizing Signature: P� '�/ ��-�j✓
Received By Staff: it& iIL.
Date: ` /;')1 ) 3
catawbacountync.gov
Environmental Health
Cctcwhc County Government Center
25 Government Drive PO Box 389 I Newton NC 28658 1828.465.8270
MAKING. LIVING. BETTER.
Catawba County, North Carolina - Disbursement Voucher
Vendor No. Date: 1/31/2023
Make Payment To: CpG Voucher No(s)
Dakota Bowman t I t 1Z
3721 Little Mountain Rd dNei gr
Newton, NC 28658 ' '•C
�8 4'Z
ATTACHMENT
Prepared by: Julia English
Description Amount
Application denied. Connecting to public sewer. Refund AC fee $300.00
Sub-Total
Food Tax
Sales Tax
Total $ 300.00
For Accounting Use
Fund Cost Center Object Project Amount Only
110 580200 663000
Total
The undersigned hereby certifies that the goods or services specified above have been received
or performed. Payment has not been previously authorized and this expenditure is a proper
charge to the appropriation indicated. The above charge is certified to you for payment.
(SIGNATURE-APPROPRIATE OFFICIAL)
CA • CATAWBA COUNTY
�' 100A SOUTHWEST BLVD
NEWTONC.) lig 0 7 ,NORTH CAROLINA 28658 RECEIPT
PHONE:828.465.8399Tuesday,January 31,2023
$4 2 5m www.catawbacountync.gov
PAYOR:
Bowman,Dakota and Mariah
PAYMENTS
TRANSACTION NUMBER: TRC-56674778-3 1-0 1-2023
PAYMENT DATE: 01/31/2023
PAYMENT TYPE: DV
INVOICE NUMBER ACCOUNT FEE NAME FEE AMOUNT
11-22-414358 110-580200-663000 Authorization to Construct(Repair) ($300.00)
Fee
TOTAL PAYMENTS: ($300.00)
EH PR-11-2022-42695
CASE TYPE: Environmental Health Plan Review WORK CLASS: Septic Malfunction
SITE ADDRESS: 3721 LITTLE MOUNTAIN RD,NEWTON NC 28658
Owner DAKOTA AND MARIAH BOWMAN,3721 LITTLE MOUNTAIN RD,NEWTON NC 28658
C:8284553728 DBOW0897@GMAIL.COM
**NO PEOPLESOFTACCOUNT'ASSIGNED**
receipt 01/31/2023 16:25 Page I oft
catawba county
public health
1/27/2023
Dakota Bowman
3721 Little Mountain Rd
Newton, NC 28658
Re: Application for Authorization to Construct for 3721 Little Mountain Rd, Newton
Health Department file number EHPR-11-2022-42695
To Whom It May Concern
The Catawba County Health Department, Environmental Health Division on 12/8/2022,evaluated the above
referenced property at the site designated on the plat/site plan that accompanied your Authorization to Construct
repair application. According to your application the site is to serve a 4 bedroom home with a design wastewater
flow of 480 gallons per day. The evaluation was done in accordance with the laws and rules governing
wastewater systems in North Carolina General Statute 130A-333 including related statutes and Title 15A,
Subchapter 18A,of the North Carolina Administrative Code, Rule.1900 and related rules.
Based on the criteria set out in Title 15A,Subchapter 18A,of the North Carolina Administrative Code, Rule.1940
through.1948,the evaluation indicated that the site is UNSUITABLE for a sanitary system of sewage treatment and
disposal. Therefore,we must deny your request for an Improvement Permit. A copy of the site evaluation is
enclosed. The site is unsuitable based on the following:
X Unsuitable soil topography and/or landscape position(Rule.1940)
Unsuitable soil characteristics(structure or clay mineralogy)(Rule .1941)
X Unsuitable soil wetness condition (Rule.1942)
X Unsuitable soil depth(Rule .1943)
Presence of restrictive horizon(Rule.1944)
X Insufficient space for septic system and repair area(Rule .1945)
X Unsuitable for meeting required setbacks(Rule.1950)
_Other(Rule.1946)
These severe soil or site limitations could cause premature system failure, leading to the discharge of untreated
sewage on the ground surface, into surface waters,directly to ground water or inside your structure.
The site evaluation included consideration of possible site modifications, as well as use of modified, innovative,or
alternative systems. However,the Health Department has determined that none of the above options will
overcome the severe conditions on this site. A possible option might be a system designed to dispose of sewage to
another area of suitable soil or off-site to additional property.
catawbacountync.gov
Environmental Health
Cctcwbo County Government Center
25 Government Drive I PO Box 389 I Newton NC 28658 1828.465.8270
MAKING. LIVING. BETTER.
Page 2
For the reasons set out above,the property is currently classified UNSUITABLE, and no improvement permit shall
be issued for this site in accordance with Rule.1948(c).
Note that a site classified as UNSUITABLE may be classified as PROVISIONALLY SUITABLE if written documentation
is provided that meets the requirements of Rule .1948(d). A copy of this rule is enclosed. You may hire a
consultant to assist you if you wish to try to develop a plan under which your site could be reclassified as
PROVISIONALLY SUITABLE.
You have a right to on informal review of this decision. You may request an informal review by the soil scientist or
environmental health supervisor at the local health department. You may also request an informal review by the
North Carolina Department of Health and Human Services regional soil scientist. A request for informal review
must be made in writing to the local health department.
You also have a right to a formal appeal of this decision. To pursue a formal appeal,you must file a petition for a
contested case hearing with the Office of Administrative Hearings, 1711 New Hope Church Rd, Raleigh, NC 27609.
To get a copy of a petition form,you may write the Office of Administrative Hearings or call the office at 984-236-
1850 or download it from the OAH web site at http://www.oah.nc.gov. The petition for a contested case hearing
must be filed in accordance with the provision of North Carolina General Statutes 130A-24 and 150B-23 and all
other applicable provisions of Chapter 150B. N.C. General Statute 130A-335(g) provides that your hearing would
be held in the county where your property is located.
Please note: If you wish to pursue a formal appeal,you must file the petition form with the Office of Administrative
Hearings WITHIN 30 DAYS OF THE DATE OF THIS LETTER. The date of this letter is 1/27/2023. Meeting the 30 day
deadline is critical to your formal appeal.
If you file a petition for a contested case hearing with the Office of Administrative Hearings,you are required by
law(N.C. General Statute 150E-23)to serve a copy of your petition on the Office of General Counsel, N.C.
Department of Health and Human Services, 2001 Mail Service Center, Raleigh, N.C. 27699-2001.
Do not serve the petition on your local health deportment. Sending a copy of your petition to the local health
department will not satisfy the legal requirement in N.C. General Statute 150E-23 that you send a copy to the
Office of General Counsel, N. C. Department of Health and Human Services.
You may call or write the local health department if you need any additional information or assistance.
Sincer ly,
can Evans, REHS
Environmental Health Specialist
Enclosures: Site evaluation
Rule.1940, .1942, .1943, .1945, .1948, .1950
Catawba County Environmental Health
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Parcel: 366904704655, 3721 LITTLE MOUNTAIN 1in=40ft
RD NEWTON, 28658
This meplreport product was prepared from the Catawba County,NC Gooa ellel Information Services. Catawba County has made substantial efforts
to ensure the accuracy of locationInformation end labeling Information contalnod on this map or data on this report Catawba County promotes and recommends
the Independent verification of any dela contained on this mop/report product by the user.The County of Catawba.Ns employees,agents,end
perSarinet,disclaim. p shall he.table fo any end sell damages,loss or Nobility,whether direct,Indirect or consequential which arises or may
anis from this or use by any person or entity.
Copyright 2021 Catawba County NC
01/27/2023
IIM
DEPARTMENT OF IIEALTTI AND I IUMAN SERVICES Sheri
/ of
Imo DIVISION OF PUBLIC I ICALTI I,ENVIRONMENTAL HEALTH SECTION PROPERTY ED S G„-
ON-SITE WATER PROTECTION DRANCI i COUNTY: �1!
• SOIIJSITE EVALUATION
for ON-SITE WASTEWATER SYSTEM
(Complete all fields in full) /
OWNER: Boa _ APPLICATION DATE f/11 Z
ADDRESS: y1/4 DATE EVALUATED; 32
PROPOSED FACILITY: PROPOSED DESIGN FLOW(.1949): tab PROPERTY SIZE: 46 �-[
LOCATION OF SITE: PROPERTY RECORDED: —
WATER SUPPLY:rivate ❑Public 44i10?It:I1 ❑Spring ❑Other
EVALUATION METHOD: 0 Auvr Boring 05it ❑Cut TYPE OF WASTEWATER: 0 Sewage ❑Industrial Process 0 Mixed
P
R
o SOIL MORPHOLOGY OTHER
F (.1941) PROFILE FACTORS
I .1940
LANDSCAPE HORIZON
POSITION/ DEPTH PROFILE
.1942
r SLOPE% (IN-) .1941 .1941 SOIL .1943 .1956 .1944 CLASS
STRUCTURE! CONSISTENCE/ WETNESS/ SOIL SAPRO RESTR <AR
TEXTURE MINERALOGY COLOR DEPTH CLASS IIORIZ
II /3.3a ,sbL.sc� 3�f
L
1 30 s'b osa. SL �I" 32 / / 0
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20
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DESCRIPTION INITIAL SYST REPAIR SYSTEM OTHER FACTORS(.1946):
i p nio SITE CLASSIFICATION(.1948):
l Available Space(.1945) vv
System Typc(s) EVALUATED BY: yGGIS
OTHER(S)PRESENT:
Site LIAR Al cr
ji
COMMENTS:
14 Updrlyd Fehr-Lary 2014
I5A NCAC 18A .1940 TOPOGRAPHY AND LANDSCAPE POSITION
(a) Uniform slopes under 15 perccnt shall be considcrcd SUITABLE with respect to topography.
(b) Uniform slopes bctwccn 15 perccnt and 30 perccnt shall be considered PROVISIONALLY SUITABLE with respect to
topography.
(c) Slopes grcatcr than 30 percent shall be considered UNSUITABLE as to topography. Slopes grcatcr than 30 perccnt may
be reclassified as PROVISIONALLY SUITABLE after an investigation indicates that a modified systcm may be installed in
accordance with Rule .1956 of this Scction: however. slopcs grcatcr than 65 perccnt shall not be reclassified as
PROVISIONALLY SUITABLE.
(d) Complex slope patterns and slopes dissected by gullies and ravines shall be considered UNSUITABLE with respect to
topography.
(e) Depressions shall be considered UNSUITABLE with respect to landscape position except when the site complies
essentially with the requirements of this Section and is specifically approved by the local health department.
(f) The surface area on or around a ground absorption sewage treatment and disposal system shall be landscaped to provide
adequate drainage if directed by the local health department. The interception of perched or lateral ground-water movement
shall be provided where necessary to prevent soil saturation on or around the ground absorption sewage treatment and
disposal system.
(g) A designated wetland shall be considered UNSUITABLE with respect to landscape position,unless the proposed use is
specifically approved in writing by the U.S. Army Corps of Engineers or the North Carolina Division of Coastal
Management.
History Note: Authority G.S. 130A-335/el:
Elf:July 1, 1982:
Amended E/ January 1. 1990.
15A NCA(' l8A.1942 SOIL.WETNESS CONDITIONS
(a) Soil wetness conditions caused by seasonal high-water table,perched water table,tidal water,seasonally saturated soil or
by lateral watcr movement shall be determined by ficld evaluation for soil wetness colors and field observations.and may be
assessed by well monitoring,computer modeling,or a combination of monitoring and modeling as required by this Rule.All
sites shall be evaluated by an Authorized Agent of the Department using Basic Field Evaluation Proccdurcs pursuant to
Paragraph(b)of this Rule.
(b) Basic Field Evaluation Procedures:
(l) A soil wetness condition shall be determined by the indication of colors of chroma 2 or less(Monscll Color
Charts)at>_2%ofsoil volume in mottles or matrix ofa horizon or horizon subdivision. f-iowevcr,colors of
chroma 2 or less which arc relic from minerals of the parent material shall not be considered indicative ofa
soil wetness condition.
(2) A Soil wetness condition shall also he determined by the periodic direct observation or indication of
saturated soils or a perched water table,or lateral water movement flowing into a bore hole,monitoring
well,or open excavation above a less permeable horizon or horizon subdivision.that may occur without
the presence of colors of chroma 2 or less. A soil wetness condition caused by saturated soils or a perched
water table shall be confirmed to extend for at least three consecutive days.The shallowest depth to soil
wetness condition determined by Subparagraph(b)(I)or(b)(2)of this Rule shall take precedence.
(c) Site Suitability as to Soil Wetness: Initial suitability of the site as to soil wetness shall be determined based upon the
findings of the Basic Field Evaluation Procedures made pursuant to Paragraph(b)of this Rule. Sites where soil wetness
conditions arc greater than 48 inches below the naturally occurring soil surface shall be considered SUITABLE with respect
to soil wetness.Sites where soil wetness conditions arc between 36 and 48 inches below the naturally occurring soil surface
shall be considered PROVISIONALLY SUITABLE with respect to soil wetness. Sites where soil wetness conditions arc less
than 36 inches below the naturally occurring soil surface shall be considered UNSUITABLE with respect to soil wetness.
Sites where a soil wetness condition is determined based upon the observation or indication of lateral water movement within
48 inches of the naturally occurring soil surface shall be considered UNSUITABLE, except when such water can be
intercepted in accordance with 15A NCAC 1 SA .1956(4).
(d) Alternative Procedures for Soil Wetness Determination: The Owner or the Owner's Legal Representative(Applicant)
shall have the opportunity to submit documentation that the soil wetness condition and resultant site classification be
alternately determined and reclassified by direct monitoring, computer modeling, or a combination of monitoring and
modeling.in accordance with a Direct Monitoring Procedure.Monitoring and Modeling Procedure,or Modeling Procedure
made pursuant to Paragraphs(c).(f).or(g)of this Rule. This determination shall take precedence over the determination
made pursuant to the Basic Field Evaluation Procedures[Paragraph(b)of this Rule].when the conditions of Paragraphs(e).
(I).or(g)of this Rule arc met. Determination by one of these Monitoring or Modeling procedures shall also be required
when:
(1) the Owner proposes to use a wastewater system requiring a deeper depth to a soil wetness condition than
the depth determined by the Basic Field Evaluation Procedures pursuant to Paragraph(b)of this Rule;or
(2) the Owner proposes to use sites with Group III or IV soil within 36 inches of the surface and where
drainage modifications arc proposed to be made, including the installation of subsurface drain tile,open
drainage ditches.or surface landscape modifications,or on such sites when fill is proposed to be used in
conjunction with existing or proposed drainage modifications. Final determination of soil wetness
condition for these sites shall be made pursuant to the Modeling Procedure in Paragraph(g)of this Rule
(c) Direct Monitoring Procedure. Soil wetness conditions may he determined by direct observation of the water surface in
wells during periods of typically high water elevations utilizing the following monitoring procedures and interpretation
method.
(I) The applicant shall notify the local health department of the intent to monitor water surface elevations by
submitting a proposal that includes a site plan, well and soil profile at each monitoring location,and a
monitoring plan no later than 30 days prior to the monitoring period. An applicant other than the property
owner shall have written authorization from the owner to be the owner's legal representative.Soil wetness
and rainfall monitoring shall be conducted under the responsible charge of'a third-party consultant or by
the property owner or the owner's agent. A third party consultant is qualified when licensed or registered
in accordance with G.S.89C(Engineers).G.S.89E(Geologists),G.S. 89F(Soil Scientists).or G.S.90A
Article 4 (Registered Sanitarians). it'required. The Owner shall submit the name(s)of the consultant(s)
performing any monitoring on their behalf to the local health department.
(2) The applicant shall submit a site plan showing proposed sites for wastewater system. shall provide the
longitude and latitude of the site,location of'monitoring wells.and all drainage features that may influence
the soil wetness conditions,and specify any proposed till and drainage modifications.
(3) The applicant shall submit a monitoring plan indicating the proposed number.installation depth.screening
depth.soil and well profile.materials and installation procedures for each monitoring well.and proposed
method of analysis.A minimum of three water level monitoring wells shall be installed for water surface
observation at each site. Additional wells shall be required for sites handling systems with a design flow
greater than 600 gallons per day(minimum of one additional well per 600 gallons per day increment).
(4) The local health department shall be given the opportunity to conduct a site visit and verify the
appropriateness of thc proposed plan.Well locations shall include portions of the initial and replacement
drainficld site(s)containing the most limiting soil'site conditions.Prior to installation of the wells the local
health department shall approve the plan. If the plan is disapproved. the local health department shall
include specific changes necessary for approval of the monitoring plan.
(5) Wells shall extend at least five feet below the natural soil surface,or existing soil surface for fill installed
prior to July 1, 1977 meeting the requirements for consideration of a site with existing fill of G.S. 130A-
341 and the rules adopted pursuant thereto. However,a well or wells which extend(s)down only 40 inches
may be used if they provide a continuous record of the water table for at least half of the monitoring
period,and one or more shallower wells may be required on sites where shallow lateral water movement or
perched soil wetness conditions arc anticipated.
(6) Water surface in the monitoring wells shall be recorded at least daily from January I to April 30.taken at
the same time during the day(plus or minus three hours).A rain(precipitation)gauge is required within
one-half mile of the site. At least daily rainfall shall be recorded beginning no later than December 1
through April 30(the end of the well monitoring period).
(7) Interpretation Method for Direct Monitoring Procedure:Thc following method ofdetenmining depth to soil
wetness condition from water surface observations in wells shall be used when the 60-day weighted
rainfall index for the January through April monitoring period equals or exceeds the site's long-term
(historic) 60-day weighted rainfall index for January to April rainfall with a 30 percent recurrence
frequency(wetter than the 9th driest year of 30,on average). The 60-day weighted rainfall index for the
monitoring period and historic rainfall record shall he computed as:
WRI�t = 0.5Po P, P1 + P51 +0.5PA
Where WRI„, = 60-day weighted rainfall index for January to April
Po = Total December rainfall
P1 = Total January rainfall
Pi = Total February rainfall
P» = Total March rainfall
P.5 = Total April rainfall
The Department shall prepare contour maps far each county where this interpretation procedure is
proposed. Contours shall be prepared following standard interpolation procedures using normalized data
collected from all National Weather Service Stations, or equivalent, from which appropriate data arc
available,at least prior to February I of the monitoring season. Data from each station shall be normalized
by fitting a 2-parameter gamma distribution to the 60-day weighted rain fall index computed for at least the
most recent three decades of historic data, in accordance with procedures outlined in Chapter 18 of the
National Engineering Handbook.NRCS,USDA.From this fitted distribution,the 60-day weighted rainfall
index for January through.April rainfall with a 30%.50%, 70%and 80%recurrence frequency shall be
computed for each Station.to provide the raw data points from which the contour maps shall be prepared.
From these maps.the site's 60-day weighted rainfall index for the January through April monitoring period
shall be compared to the long-tern(historic)January to April 60-day weighted rainfall index at different
expected recurrence frequencies. The soil wetness condition shall be determined as the highest level that is
continuously saturated for the number of consecutive days during the January through April monitoring
period shown in the following table:
Recurrence Frequency Range Number of Consecutive Days
January to April 60-Day of Continuous Saturation
Weighted Rainfall Index for Soil Wetness Condition
30%to 49.9% 3 days or 72 hours
50"o to 69.9% 6 days or 144 hours
70%to 79.9%ro 9 days or 216 hours
80%to 100% 14 days or 336 hours
(8► If monitoring well data is collected during monitoring periods that span multiple years. the year which
yields the highest(shallowest)soil wetness condition shall be applicable.
(f) Monitoring and Modeling Procedure: A combination of monitoring and modeling may be used to determine a soil
wetness condition utilizing the following monitoring procedures and interpretation method.
(1) The procedures described for the Direct Monitoring Procedure in Subparagraphs(c)(I).(2).(3).(4).(5).
and(6)of this Rule shall be used to monitor water surface elevation and precipitation for determining soil
wetness conditions by a combination of direct observation and modeling,except that the rainfall gauge and
each monitoring well shall use a recording device and a data file (DRAINMOD-compatible) shall be
submitted with the report to the local health department(devices shall record rainfall at least hourly and
well water level at least daily).
(2) Thc ground water simulation model DRAINMOD shall be used to predict daily water levels over at least a
3(1 year historic time period after the model is calibrated using the water surface and rainfall observations
made on-site during the monitoring period. Thc soil wetness condition shall be determined as the highest
level predicted by the model to be saturated for a 14-day continuous period between January 1 and April
30 with a recurrence frequency of 30 percent(an average of at least 9 years in 30).
(A) Weather input tiles, required to run the DRAINMOD.shall be developed from hourly rainfall
gauge data taken within a half-mile of the site and from daily temperature and hourly or daily
rainfall data collected over a minimum 30-year period from the closest available National
Weather Service.or equivalent.measuring station to the site. DRAINMOD weather data tiles on
file with the Department shall be made available upon request to the applicant or applicant's
consultants. Daily maximum and minimum temperature data for the January l through April 30
monitoring period,plus for at least 30 days prior to this period,shall be obtained from the closest
available weather station.
(B) Soil and Site inputs for DRAINMOD. including a soils data file closest to the soil series
identified,depths of soil horizons.estimated saturated hydraulic conductivity of each horizon.
depth and spacing of drainage features and depression storage.shall be selected in accordance
with procedures outlined in the DRAINMOD Users Guide. and guidance is also available in
Reports 333 and 342 of the University of North Carolinas Water Resources Research Institute.
DRAINMOD soils data files on file with the Department shall be made available upon request to
the applicant or applicant's consultants.
(C) Inputs shall be based upon site specific soil profile descriptions Soil and site input factors shall
be adjusted during the model calibration process to achieve a best fit by least squares analysis of
the daily observations over the whole monitoring period (mean absolute deviation between
measured and predicted values no greater than eight inches). and to achieve the best possible
match between the highest water table depth during the monitoring period (measured-vs-
predicted)that is saturated for 14 consecutive days.
(D) For sites intended to receive over 1500 gallons per day. the soil wetness detcmsination using
DRAINMOD shall take into consideration the impact of wastewater application on the projected
water table surface.
(E) The ground water simulation analysis shall be prepared and submitted to the local health
department by individuals qualified to use DRAINMOD by training and experience and who arc
licensed or registered in North Carolina if required in G.S. 89C (Engineers). G.S. 89E
(Geologists).and G.S.89F(Soil Scientists).The local health department or Owner may request a
technical review by the Department prior to approval of the soil wetness condition determination.
(g) Modeling Procedure: A soil wetness condition may be determined by application of DRAINMOD to predict daily water
levels over at least a 30 year historic time period after all site-specific input parameters have been obtained.as outlined in the
DRAINMOD Users Guide. This modeling procedure shall be used when a ground water lowering system is proposed for a
site with Group III or IV soils within 36 inches of the naturally occurring soil surface.This procedure shall also be used to
evaluate sites with Group Ill or IV soils within 36 inches of the naturally occurring soil surface, where the soil wetness
condition was initially determined using a procedure described in Paragraphs(c)or(f) of this Rule and where drainage
modifications arc proposed or when fill is proposed to be used in conjunction with existing or proposed drainage
modifications.Thc soil wetness condition shall be determined as the highest level predicted by the model to be saturated fora
14-day continuous period between January 1 and April 30 with a recurrence frequency of 30 percent(an average of at least 9
years in 30).
(I) Weather input files,required to run DRAINMOD,shall consist of hourly rainfall and daily temperature
data collected over thc entire period of record but for at least a 30-ycar period from the closest availablc
National Weather Service,or equivalent,measuring station to the site. DRAINMOD weather data files on
tile with thc Department shall be made availablc upon request to the applicant or applicant's consultants.
(2) Soil and Sitc inputs for DRAINMOD.including a soils data filcclosest to the soil series identified,depths
of soil horizons,hydraulic conductivity of each horizon.dcpth and spacing of proposed drainage features
and surface storage and drainage parameters.shall be selected in accordance with procedures outlined in
the DRAINMOD User's Guide. DRAINMOD soils data files on file with the Department shall be madc
available upon rcqucst to the applicant or applicant's consultants. Inputs shall include:
(A) Soil input tile with the soil moisture characteristic curve and data for the soil profile that is closest
to the described soil profile that is present on the site:
(B) Soil horizon depths determined on site:
(C) Site measured or proposed drain depth and spacing,and drain outlet elevation;
(D) In-situ saturated hydraulic conductivity measurements for at least three representative locations
on the site and at each location for at least three most representative soil horizons within five feet
of the surface. Conductivity measurements shall be for one representative soil horizon at or
above rcdoximorphic depletion features and two representative soil horizons at and below
redoximorphic concentration features at each location on the site;
(E) All other model parameters based upon the DRAINMOD User's Guide,or other accepted values
consistent with the simulation model:and
(F) A sensitivity analysis shall be conducted for the following model parameters:
(i) Soil input files for at least two other most closely related soil profiles;
(ii) Saturated hydraulic conductivity of each of horizons measured on-site;
(iii) Drain depth and spacing:and
(iv) Surface storage and depth of surface flow inputs.
The sensitivity analysis shall be used to evaluate the range of soil and site characteristics for choosing
input parameters related to the soil profiles.hydraulic conductivity input values based upon the range of
hydraulic conductivity values measured on the site,and inputs for surface and subsurface drainage features
based upon the range of possible elevations and distances that occur or may occur after installation of
improvements. The sensitivity analysis shall establish which parameters arc most critical for determination
of the depth to soil wetness condition. Conservative values for the most critical parameters shall be used in
applying the model to the site.
(3) For sites designed to receive over 600 gallons per day.the soil wetness determination using DRAINMOD
shall take into consideration the impact of wastewater application on the projected water table surface.
(4) Thc ground water simulation analysis shall be prepared and submitted to the local health department by
individuals qualified to use DRAINMOD by training and experience and who arc licensed or registered in
North Carolina if required in G.S.K9C(Engineers).G.S.89E(Geologists).and G.S.89F(Soil Scientists).
The local health department shall submit the ground water simulation analysis to the Department for
technical review prior to approval of the soil wetness condition determination.
(h) A report of the investigations made for the Direct Monitoring Procedure, Monitoring and Modeling Procedure or
Modeling Procedure pursuant to Paragraphs(e),(t),or(g)of this Rule shall be prepared prior to approval of the soil wetness
condition determination. Reports prepared by a licensed or registered professional shall bear the professional seal of the
person(s)whom conducted the investigation(Engineer,Geologist. Soil Scientist or Registered Sanitarian). A request for
technical review of the report by the Department shall include digital copies of monitoring data and digital copies of model
inputs,output data,and graphic results,as applicable.
(j) Where the site is UNSUITABLE with respect to soil wetness conditions. it may be reclassified PROVISIONALLY
SUITABLE if a modificd.alternative or innovative system can be installed in accordance with 15A NCAC 18A.1956,.1957,
or.1969.
llisuny Aare: .4tirhority G.S. 130•t-335(e):
El:'July 1, 1982;
.1 mended L(r January 1. 1990;
Temporary Amendment Eli'June?-t. 2003;April 11 2002:
.4mended Ejj 4fay 1. 00-1.
15A N('AC l8A.1943 SOIL DEPTH
(a) Soil depths to saprolitc,rock.or parent material greater than 48 inches shall be considered SUITABLE as to soil depth.
Soil depths to saprolite,rock.or parent material between 36 inches and 48 inches shall be considered PROVISIONALLY
SUITABLE as to soil depth. Soil depths to saprolite, rock, or parent material less than 36 inches shall be classified
UNSUITABLE as to soil depth.
(b) Where the site is UNSUITABLE with respect to depth. it may be reclassified PROVISIONALLY SUITABLE atler a
special investigation indicates that a modified or alternative system can be installed in accordance with Rule.1956 or Rule
.1957 of this Scction.
Hirtor s'Note: Authority G.S. 139A-335te1:
EM:July 1. 1982:
Amended Eff August 1. 1988. Q
15A NCAC I8A.1945 AVAILABLE SPACE
(a) Sites shall have sufficient available space to permit the installation and proper functioning of ground absorption sewage
treatment and disposal systems,based upon the square footage of nitrification field required for the long-term acceptance ratc
determined in accordance with these Rules.
(b) Sites shall have sufficient available space for a repair area separate from the arca determined in Paragraph(a)of this
Rule. The repair area shall be based upon the area of the nitrification field required to accommodate the installation of a
replacement system as specified in Rule.1955,_1956,or.1957 of this Section_ Prior to issuance ofthc initial Improvement
Permit for a site,the local health department shall designate on the permit the original system layout,the repair area,and the
type of replacement system.
(c) The repair area requirement of Paragraph(b)of this Rule shall not apply to a lot or tract of land:
(1) which is specifically described in a document on file with the local health department on July 1, 1982.or
which is specifically described in a recorded deed or a recorded plat on January 1, 1983:and
(2) which is of insufficient size to satisfy the repair area requirement of Paragraph (b) of this Rule. as
determined by the local health department:and
(3) on which a ground absorption sewage treatment and disposal system with a design daily flow of.
(A) no more than 480 gallons is to be installed;or
(B) more than 480 gallons is to be installed if application for an improvement permit which meets the
requirements()Mule.1937(c)of this Subchapter is received by the local health department on or
before April 1. 1983.
(d) Although a lot or tract of land is exempted under Paragraph(c)from the repair area requirement of Paragraph(b),the
maximum feasible area,as determined by the local health department.shall be allocated for a repair area.
History Now: Authority G.S. 13024-335tet and(1):
Juh° 1. 1982:
Amended Eir Februar-1. 1992:July 1. 1983:Jarruai)•1. 1983_
I5A NCAC 18A.1948 SITE CLASSIFICATION
(a) Sites classified as SUITABLE may be utilized for a ground absorption sewage treatment and disposal system consistent
with these Rules. A suitable classification generally indicates soil and site conditions favorable for the operation ofa ground
absorption sewage trcatmcnt and disposal system or have slight limitations that arc readily overcome by proper design and
installation.
(b) Sites classified as PROVISIONALLY SUITABLE may be utilized for a ground absorption sewage treatment and
disposal system consistent with these Rules but have moderate limitations. Sites classified Provisionally Suitable require
some modifications and careful planning.design.and installation in order for a ground absorption sewage treatment and
disposal system to function satisfactorily.
(c) Sites classified UNSUITABLE have severe limitations for the installation and use of a properly functioning ground
absorption sewage treatment and disposal system. An improvement permit shall not be issued for a site which is classified as
UNSUITABLE. However,where a site is UNSUITABLE.it may be reclassified PROVISIONALLY SUITABLE if a special
investigation indicates that a modified or alternative system can be installed in accordance with Rules.1956 or.1957 of this
Section.
(d) A site classified as UNSUITABLE may be used for a ground absorption sewage treatment and disposal system
specifically identified in Rules _1955, .1956, or.1957 of this Section or a system approved under Rule .1969 if written
documentation,including engineering,hydrogcologic.geologic or soil studies,indicates to the local health department that
the proposed system can be expected to function satisfactorily. Such sites shall be reclassified as PROVISIONALLY
SUITABLE if the local health department determines that the substantiating data indicate that:
(l) a ground absorption system can be installed so that the effluent will be non-pathogenic.non-infectious.
non-toxic,and non-hazardous:
(2) the effluent will not contaminate groundwater or surface water;and
(3) the effluent will not be exposed on the ground surface or be discharged to surface waters where it could
come in contact with people,animals,or vectors.
The State shall review the substantiating data if requested by the local health department.
Hilton•Note• Autbontr G..ti. 130:f-335(et:
EJf.July 1, 1982:
Amended Elf:April 1. 1993:January 1, 1990.
15A NCAC 18A.1950 LOCATION OF SANITARY SEWAGE SYSTEMS
(a) Every sanitary sewage treatment and disposal system shall be located at least the minimum horizontal distance from the
following:
(I) Any private water supply source.including any well or spring I00 feet;
(2) Any public water supply source 100 feet;
(3) Streams classified as WS-1 I00 fccr
(4) Waters classified as S.A. 100 fcct,from
mean high
water mark;
(5) Other coastal waters 50 feet.from
mean high
water nark:
(6) Any other stream,canal,marsh,or other surface waters 50 feet:
(7) Any Class I or Class II reservoir 1(X) feet.from
normal pool
elevation;
18) Any permanent stone water retention pond 50 feet, from
flood pool
elevation:
(9) Any other lake or pond 50 feet.from
normal pool
elevation;
(10) Any building foundation 5 feet;
(II) Any basement 15 feet:
(12) Any property line 10 feet;
(13) Top of slope of embankments or cuts of 2 feet or more vertical height 15 feet:
(14) Any water line 10 feet:
(15) Drainage Systems:
(A) Interceptor drains,foundation drains,and storm water diversions
(i) upslopc 10 feet.
(ii) sideslope l5 feet.and
(iii) downslope 25 feet;
(B) Groundwater lowering ditches and devices 25 feet;
(16) Any swimming pool 15 feet;
(17) Any other nitrification field(except repair area) 20 feet;
(b) Ground absorption sewage treatment and disposal systems may be located closer than 100 feet from a private water
supply.except springs and uncased wells located downslope and used as a source of drinking water, for repairs, space
limitations,and other site-planning considerations but shall be located the maximum feasible distance and in no case less than
50 feet.
(c) Nitrification fields and repair areas shall not be located under paved areas or areas subject to vehicular traffic. If effluent
is to be conveyed under areas subject to vehicular traffic.ductile iron or its equivalent pipe shall be used. However,pipe
specified in Rule.1955 Cc)may be used if a minimum of 30 inches of compacted cover is provided over the pipe.
(d) In addition to the requirements of Paragraph(a)of this Rule,sites to be used for subsurface disposal for design units with
flows over 3,000 gallons per day. as determined in Rule .1949 (a) or (b) of this Section. which include one or more
nitrification fields with individual capacities of greater than 1,500 gallons per day.shall be located at least the minimum
horizontal distance from the following:
(I) Any Class I or II reservoir or any public water supply
source utilizing a shallow(under 50 feet)groundwater aquifer 500 feet;
(2) Any other public water supply source,unless determined to utilize a confined aquifer 200 feet;
(3) Any private water supply source.unless determined to utilize a confined aquifer 100 feet;
(4) Waters classified as SA 2(X)feet.from
mean high
water mark:
(5) Any waters classified as DVS-1 200 feet;
(6) Any surface waters classified as WS-I1.WS-III.B.or SB 100 feet;and
(7) Any property line 25 feet,
(e) Collection sewers, force mains, and supply lines shall be located at (cast the minimum horizontal distance from the
following:
(I) Any public water supply source,including wells.springs.
and Class I or Class II reservoirs 1(X)feet,unless
constructed of leakproof
pipe.such as ductile iron
pipe with mechanical
joints equivalent to
water main standards,in which case
the minimum setback may be reduced to
50 feet:
(2) Any private water supply source, including wells and springs 50 feet.unless
constructed of similar
leakproof pipe.such as
ductile iron pipe with
mechanical joints
equivalent to water main
standards,in which case
the minimum setback may
be reduced to 25 feet:
(3) Any waters classified as W'S-I.WS-[l,
W'S-III-B.SA.or SB 50 feet. unless
constructed of similar
leakproof pipe.such as
ductile iron pipe with
mechanical joints
equivalent to water main
standards,in which case
the minimum setback may
he reduced to 10 feet:
(4) Any other stream,canal, marsh.coastal
waters,lakes and other impoundments,or other surface waters 10 feet:
(5) Any basement 10 feet:
(6) Any property line 5 feet:
(7) Top of slope of embankments or cuts of two feet or more vertical height l016/
(8) Drainage Systems:
(A) Interceptor drains, storm drains and storm water diversions 5 feet:
(B) Ground-water lowering ditches and devices 10 feet:
(9) Any swimming pool 10 feet:
(10) Any other nitrification field 5 feet.
(1) Sewer lines may cross a water line if 18 inches clear separation distance is maintained,with the sewer line passing under
the water line. When conditions prevent an l 8-inch clear separation from being maintained or whenever it is necessary for
the water line to cross under the sewer,the sewer line shall be constructed of ductile iron pipe or its equivalent and the water
line shall be constructed of ferrous materials equivalent to water main standards for a distance of at least ten feet on each side
of the point of crossing, with full sections of pipe centered at the point of crossing.
(g) Sewer lines may cross a storm drain if:
(1) 12 inches clear separation distance is maintained:or
(2) the sewer is of-ductile iron pipe or encased in concrete or ductile iron pipe for at least five feet on either
side of the crossing.
(h) Sewer lines may cross a stream if at least three feet of stable cover can be maintained or the sewer line is of ductile iron
pipe or encased in concrete or ductile iron pipe for at least ten feet on either side of the crossing and protected against the
normal range of high and low water conditions, including the 100-year flood/wave action. Aerial crossings shall be by
ductile iron pipe with mechanical joints or steel pipe. Pipe shall be anchored for at least ten feet on either side of the crossing.
(i) Septic tanks.lilt stations,wastewater treatment plants.sand filters,and other pretreatment systems shall not be located in
areas subject to frequent flooding (areas inundated at a ten-year or less frequency) unless designed and installed to be
watertight and to remain operable during a ten-year storm- Mechanical or electrical components of-treatment systems shall be
above the 100-year flood level or otherwise protected against a 100-year flood.
History Note.: Authority G.S. 130.1-33510 and(1):
Elf:July 1, 1982:
!Amended F_J]:Jaguar-1. 1990; October 1. 1982.
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