IPAC R with report to customerHTE# 07-s--,Z-36,939 Harnett County Department of Public Health 2 5 81 8
Improvement Permit
A building permit cannot be issued with only an ImRrovement Permit
PROPERTY LOCATION: CaPc C.o~ ;E'cl,
ISSUED T0: ~l css it lcbc_-~~ LN cfon SUBDIVISION 16 eJa~S ~~r~ L.ca,~C(ovt LOT #
NEW E' REPAIR ❑ EXPANSION ❑ Site Improvements required prior to Construction Authorization Issuance:
Type of Structure: I♦,o,-.L ed &ta.k
Proposed Wastewater System ype: t L v~~~
Projected Daily Flow: 2 6- 7 GPD
Number of bedrooms: S" Number of Occupants: i o max
Basement ❑Yes 910
Pump Required: QO(es ❑ No ❑ Ma be required based on final location and elevations of facilities
Type of Water Supply: ❑ Community 10 Public ❑ Well Distance from well feet Permit valid for. ~jve years
Permit conditions: ❑ No expiration
Authorized State Agent:: /f L l'(, ~ 141 Date: 212-12-10 SEE ATTACHED SITE SKETCH
The issuance of this permit by thWeealth Department in y guarantees the issuance of other permits. The permit holder is responsible for checking with appropriate governing bodies in meeting their requirements. This
site is subject to revocation if the site plan, plat, or the intended use changes. The Improvement Permit shall not be affected by a change in ownership of the site. This permit is subject to compliance with the provisions of
the laws and Rules for Sewage Treatment and Disposal and to conditions of this permit.
Construction Authorization
(Required for Building Permit ' )
The construction and installation requirements of Rules .1950, .1952, .1954, .1955, .1956, .1957, .1958. and .1959 are incorporated by references into this permit and shall be met. Systems shall be installed in accordance
with the attached system layout pD II
ISSUED TO: berr I~• dorA. k L c*41-cx 410 r. PROPERTY LOCATION: _ 7~,st lno-~c
SUBDIVISION ~~d e.~ I arf l.w.y c1 d LOT # 7
Facility Type: J~-~ ~.Q.tgK~ar~ O'lew ❑ Expansion ❑ Repair
Basement? ❑ Yes 2- No Basement Fixtures? ❑ Ye No
Type of Wastewater System** FY,r.n~/ ~1ow L cud: z a. %-r,
(Initial) Wastewater Flow: GPD
(See note below, if applicable
-EAI-A o,1 Z! Q, (Repair)
Installation Requirements/Conditions umber of trenches C-t :,r
Septic Tank Size / a,5"0 gallons Exact length of each trench
Pump Tank Size sS•O gallons Trenches shall be installed on contour at a
Maximum Trench Depth of.
(Trench bottoms shall be level to +/-1/4"
in all directions)
Pump Requirements: ft. TDH vs. GPM
C Q,.t4!^ C - C2r
vlcd ~sY~'
feet Trench Spacing: Feet on Center
Soil Cover inches
inches (Maximum soil cover shall not exceed
36" above the trench bottom)
inches below pipe
~jgre ate Depth: inches above pipe
~ fc. - IF inches total
Tittr~ b 4 o.. r' C,.., r, l ,ro v1A
*If applicable: / undeatand the rystem type specified is different from the type specified on the application. / accept the fpeciltications of thin permit.
Owner/legal Representative Signature: Date:
This Construction Authorization is subject to revocation if the site plan, plat, or the intended use changes. The Construction Authorization shall not be transferred when there is a change in ownership of the site. This
Construction Authorization is subject to compliance with the provisions of the Laws and Rules for Sewage Treatment and Disposal and to the conditions of this pe it SEE ATTACHED SITE SKETCH
C 1 ZZ 4r/ a
Authorized State Agen • w Date: 2 _
Construction Authorization Expiration Date: i 1 f'
FLOW EQUALIZATION SCHEDULE - CURRENT HOUSE
DAY
INFLOW
OUTFLOW
RESIDUAL
THURSDAY
600
257.14
342.86
FRIDAY
600
257.14
685.72
SATURDAY
600
257.14
1028.58
SUNDAY
0
257.14
771.44
MONDAY
0
257.14
514.3
TUESDAY
0
257.14
257.14
WEDNESDAY
0
257.14
0
TOTAL FLOW 1
1800
House existing system - 300' Accepted @.3 LTAR
House equalized for 257.14 gpd with 300' Accepted equals .214 LTAR
MINIMUM PUMP TANK SIZE - assuming 43 gal/in BTS 2581 PT 271
14" pump submergence = 602 gal
Dose volume = 128.57 gal
Equalization volume = 1028.58 gal
4" Alarm volume = 172 gal
Emergency storage = 600 gal
MINIMUM PUMP TANK SIZE = 2402.58
PRESSURE MANIFOLD DESIGN
3/4" SCH 40 AT 2.5 FEET OF HEAD = 14 GPM
DOSING 85.71 GALLONS THREE TIMES PER DAY
PUMP ON TIME 6.12 MINUTES
PUMP OFF TIME 7 HOURS 53.88 MINUTES
1 V2" SCH 40 SUPPLY LINE
d. Sites meeting the criteria for Innovative Systems set forth in Rule .1969, or
other sites meeting the requirements for systems specifically approved by the
State.
V. System Sizing and Design Criteria:
a. Septic Tank & Effluent Filter: The septic tank and effluent filter shall be
designed and constructed in accordance with Rule .1952, .1953, and .1954 and
sized in accordance with .1952 (b) (2) where "Q" is the largest projected 24
hour waste flow in the flow equalization cycle.
b. Grease Traps: The grease trap shall be designed and constructed in accordance
with Rules .1952, .1953, .1954 and .1955 (k)(3) and (k)(4). Grease traps at
churches with kitchens shall be sized at a minimum of 1 gallon/seat [in the
dining area]. The minimum liquid capacity of any grease trap shall be 1,000
gallons.
c. Equalization/Pump Tank: The pump dosing tank shall be sized to allow for:
i. Pump submergence: Effluent volume that covers the pump and the motor
housing, or in accordance with pump manufacturer's suggestions, but in
no case shall less than 12 inches of effluent remain in the tank at all times.
The pump intake shall be at least 5" from the interior bottom of the tank;
ii. Minimum Dose Volume: Minimum dose required based on the size of the
nitrification field (see below);
iii. Equalization Volume: The highest cumulative volume of effluent as
indicated by the flow balance calculation;
iv. High-Water Level Alarm: The high-water alarm shall be set to activate at
or above the equalization volume; and
v. Emergency Storage Volume: Effluent volume that equals Q as defined in
V(a).
d. Pump: In addition to the applicable requirements of 1952(c)(2), (3) and (4) the
pump shall be sized to deliver the minimum required flow at the total dynamic
head. The pump shall also deliver a flow that meets or exceeds a scour velocity
of 2 feet/second, using Q = (V) (2.45d2), where V = scour velocity = 2
feet/second and d = inside pipe diameter in inches. The minimum delivery rate
at a residual operating pressure of 2 feet shall be at least:
i. 13 GPM for 1-%2 inch Sch 40 pipe,
ii. 21 GPM for 2 inch Sch 40 pipe,
iii. 46 GPM for 3 inch Sch 40 pipe
Control Panel: The control panel shall meet State approval and meet the
specifications set forth in Rule .1952 (c)(6) with the additional requirements of:
i. High-water level alarm event counter
ii. Timer over-ride counter
iii. Pump event counter
iv. Pump elapsed time meter
v. Magnetic motor contactor
vi. HOA switch
vii. Control circuit fuse
viii. Alarm circuit fuse
ix. Float switch terminal block
x. For each pump, either a:
- Programmable timer with variable controls for setting the on and off
times from .05 seconds to 30 hours, or
- a repeat cycle timer that afford the amount of control needed for pump
run time and off time.
xi. Circuit breaker for each pump
xii. Circuit breaker for the alarm /control circuit
xiii. NEMA 4X Alarm strobe beacon
xiv. NEMA 4X Alarm Horn (83 decibels @ 3' minimum) w/ auto reset
xv. NEMA 4X Exterior Horn Test/ Normal/Silence Switch
xvi. Ground lug
xvii. 2 Lockable Hasps or one lockable hasp & 2 captive screws opposite the
hinges of the NEMA 4X enclosure
xviii. Pump Run light
Controls shall require the pump enable float switch to be activated (minimum
dose volume present) before the start of any pump cycle. Cycles shall be shut
off by the run timer or the low-water cut-off float (not by deactivation of the
enable float).
Approved flow equalization panel models shall be listed on the On-Site
Wastewater Section web page. (http://www.deh.enr.state.nc.us/oww).
f. Alternating duplex or sequencing multiplex pumps are required for any system
with 3000 gallons or more per any 24-hour flow period (Q>3000 gallons), the
system requires 2000 linear feet or more of nitrification line, or the equalized
daily flow is 1500 gallons or greater. The control panel shall meet the additional
requirements of .1952 (c)(7) and include a programmable timer for each pump.
The control panel shall be designed to sequence dosing events between pumps.
The HOA switches in duplex and multiplex panels shall enable the operator to
shut off one or more fields with the fields remaining in service dosed
automatically, sequentially and uniformly.
g. Remote alarms and telemetry may be specified on a system-specific basis.
h. The control panel shall be mounted within 10 feet of the pump tank and at a
height to allow the Operator in Responsible Charge (ORC) to easily adjust and
observe the timer control device and other appurtenances of the control panel
(e.g., center of box to be 3 to 5 feet above finished grade).
4
Pump Tank Sizing
Assuming a pump height of 20" and a tank with 125 gallons per inch:
Pump submergence volume
Dosing Volume
Equalization Volume
Emergency Storage Volume
Adding the volumes yields a
Gallons.
= 2500 Gallons
= 429
= 5142 Gallons
= 3000 Gallons *(highest daily flow)
required dosing / equalization tank volume of 11,071
Dosing Regime: 429 gallons every 8 hours. Given a measured pump delivery rate
of 50 gpm. The repeat cycle timer would be set at 8.6 minutes "on" and 8 hours
(or 7.86 hours) "off".
VI. Installation and Testing Procedures:
a. A pre-construction conference shall be required to be attended by the system
designer, installer, local health department, licensed soil scientist and registered
professional engineer, as applicable, prior to beginning construction of the flow
equalization system.
b. The septic tank, dosing tank, risers, and pipe penetrations shall be demonstrated to
be watertight by a 24-hour leak test (no measurable leakage in 24 hours). The test
shall be run with risers and inlet/outlet pipes installed.
c. Care shall be taken during system installation to prevent extraneous debris from
entering the tanks, supply lines or distribution network. Supply lines, manifolds
and orifice control devices shall be flushed out prior to system startup.
d. A pump delivery rate shall be measured and the timer control device adjusted
according to the measured delivery rate to achieve the equalized daily flow. The
time dosing control panel manufacturer's recommendations shall be followed for
system start-up. The timer control device shall be setup per the system design
specifications in accordance with the measured pump delivery rate by the operator
in responsible charge (ORC). All floats, counters, meters, timers, and alarms shall
be tested for functionality. If needed the control panel manufacturer's
representative shall be present during system start-up.
e. All other mechanical components, pump(s), pump cycling, filters, etc., as
applicable must be demonstrated to be fully operable in accordance with their
design.
9
VII. Operation, Maintenance and Monitoring Requirements
a. System management entity shall be comparable to a Type V system in Rule
.1961(b), Table V (b). Inspection/maintenance and reporting frequency
requirements shall be as (unless more frequent visits are required based on the
pretreatment or effluent distribution system and specified in the Operation
Permit):
Equalized Flow
<1500 gpd
1500 - 3000 gpd
3000 - 10000 gpd
> 10000 gpd
ORC Insp. Interval
2/year
4/year
12/year
I /week
LHD Insp. Interval
1 /year
1/year
1/year
1/year
If telemetry is provided and the ORC response time is 2 hours or less per the
maintenance contract, the inspection frequency may be reduced as follows (unless
more frequent visits are required based on the pretreatment or effluent distribution
system and specified in the Operation Permit):
Equalized Flow
<1500 gpd
1500 - 3000 gpd
3000 - 10000 gpd
> 10000 gpd
ORC Insp. Interval
1 /year
2/year
6/year
1/14 days
LHD Insp. Interval
1/year
1 /year
1 /year
1/year
b. The Operator in Responsible Charge (ORC) shall provide monitoring reports to
the local health department within 30 days of each required inspection. The ORC
shall maintain a log of all malfunction incidences/notifications, observations,
maintenance activities, and meter readings of pump run events, pump run times,
override events, and high-level alarm events at each visit. Minimum maintenance
during each required inspection shall include visual observation of the drainfield,
checking/cleaning filter screen(s), measuring delivery rate, and recording flow
meter reading, pump run times, cycle counts, high-level events, and water meter
readings where applicable. At least once per year, orifice control devices shall be
flushed, pressure head measurements made, and solids accumulation in the tanks
shall be measured and recorded. Necessary adjustments to timer settings shall be
pre-approved by the local health department, and adjustment times noted in the
monitoring log and reports.
c. The ORC shall also conduct other additional observations, measurements,
monitoring, and maintenance activities as specified in the Operation Permit and as
recommended by the timer control panel manufacturer.
10
Thomas J. Boyce
P.O. Boa 81
Pittsboro, NC 27312
919-868-8135
NC Licensed Soil Scientist # 1241
NC Registered Sanitarian # 1353
R. L. Properties
P.O. Box 2050
Angier, NC 27501
Re: 130 Pope's Lake Rd and adjacent garage apartment., Harnett County
Dear Mr. Langdon,
A preliminary septic system design was completed on the above referenced properties on
January 13, 2010 and a meeting with Harnett Co. was on January 15, 2010. The purpose of the
evaluation was to determine the ability to support an expansion of the existing subsurface waste
disposal systems. All ratings and determinations were made in accordance with "Laws and Rules
for Sewage Treatment and Disposal Systems, 15A NCAC 18A .1900".
The existing 240 gpd system comprises of a 1,000 gallon septic tank and 200 feet of an accepted
system with serial distribution. The existing 360 gpd system comprises of a 1,000 gallon septic
tank and 300 feet of an accepted system. A long term acceptance rate of .3 gpd/sgft was assigned
to both sites as permitted. The proposed use would be a bed and breakfast operating three days
per week with five rooms available for the house and two days per week with the innkeeper's
room in the current garage. This weekly flow of 1800 gallons over seven days equals 257.14 gpd.
The septic tanks would be sized at 1,250 gallons and the pump tanks approximately 2,850
gallons. A daily inflow and outflow chart is enclosed along with a pressure manifold design.
This report does not guarantee or represent approval or issuance of permits as needed by the
local health department. This report only represents my opinion as a licensed soil scientist. I trust
this is the information that you require at this time. If you have any questions or need assistance,
please call.
Sincerely,
Thomas . B ce
1 r y '7
F '2s