HomeMy WebLinkAbout2660288 - Site assessment report
FOR
JAMES MORROW,
KILCORRAN,
SMITHBORO,
CO. MONAGHAN.
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Note: This form requires the latest version of Adobe Acrobat Reader
and on PC’s Windows 7 or later. Windows XP produces errors
in calculations
Step 1:
Goto Menu Item File, Save As and save the file under a reference relating to the
client or the planning application reference if available.
Use the Clear Form button to clear all information fields.
SITE CHARACTERISATION FORM
COMPLETING THE FORM
Notes:
All calculations in this form are automatic.
Where possible information is presented in the form of drop down selection lists to
eliminate potential errors.
Variable elements are recorded by tick boxes. In all cases only one tick box should be
activated.
All time record fields must be entered in twenty four hour format as follows: HH:MM
All date formats are DD-MM-YYYY.
All other data fields are in text entry format.
This form can be printed out fully populated for submission with related documents and
for your files. It can also be submitted by email.
Section 3.2 In this section use an underline across all six columns to indicate the depth
at which changes in classification / characteristics occur.
Section 3.4 Lists supporting documentation required.
Section 4 Select the treatment systems suitable for this site and the discharge route.
Section 5 Indicate the system type that it is proposed to install.
Section 6 Provide details, as required, on the proposed treatment system.
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Magheraveeley.
Ll
James
1.0 GENERAL DETAILS (From planning application)
Kilcorran, Smithboro, Co. Monaghan.
There are 4 double bedrooms which will equate to six adults.
The site is potentially suitable as there appears to be no restrictions to the on-site treatment of domestic effluent. Surface
water and ground water could be targets at risk.
APPENDIX A: SITE CHARACTERISATION FORM
File Reference:
Prefix: Mr First Name: Surname:
Address: Site Location and Townland:
Number of Bedrooms: 4 Maximum Number of Residents:
Comments on population equivalent
Proposed Water Supply:
Mains ✔ Private Well/Borehole Group Well/Borehole
Soil Type, (Specify Type):
Subsoil, (Specify Type):
Bedrock Type:
Aquifer Category: Regionally Important Locally Important Poor
Vulnerability: Extreme High Moderate ✔ Low
Groundwater Body: Status
Name of Public/Group Scheme Water Supply within 1 km:
Source Protection Area: ZOC SI SO Groundwater Protection Response:
Presence of Significant Sites
(Archaeological, Natural & Historical):
Past experience in the area:
Comments:
(Integrate the information above in order to comment on: the potential suitability of the site, potential targets at risk, and/or any potential site restrictions).
Note: Only information available at the desk study stage should be used in this section.
2.0 GENERAL DETAILS (From planning application)
None.
Kilcorran water supply lake 238m North East. Unused graveyard 590m WNW.
R1
Aughnashalvey GWS
Good
DSL
Limestone till. TLs.
Acid brown earth. AminDW.
6
Morrow
James Morrow, Kilcorran, Smithboro REC
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Good agricultural land.
Mature hedges all around.
3.1 Visual Assessment
Landscape Position:
Slope: Steep (>1:5) Shallow (1:5-1:20) ✔
Slope Comment
Relatively Flat (<1:20)
Surface Features within a minimum of 250m (Distance To Features Should Be Noted In Metres)
Houses:
Existing Land Use:
Vegetation Indicators:
Groundwater Flow Direction:
Ground Condition:
Site Boundaries:
3.0 ON-SITE ASSESSMENT
Grass.
Firm during a spell of unsettled weather with occasional rainfall.
Expected South-East.
Home dwelling house 70m South. Dwelling house 123m North.
ABOUT 1: 17
Elevated on South-Easterly facing slope.
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Local road along North-Eastern boundary of the site.
None
None
None
Finn river tributary 260m South-West.
3.1 Visual Assessment (contd.)
Roads:
Outcrops (Bedrock And/Or Subsoil):
Surface Water Ponding:
Lakes:
Beaches/Shellfish Areas:
Wetlands:
Karst Features:
Watercourses/Streams:*
*Note and record water level
3.0 ON-SITE ASSESSMENT
None
Kilcorran lake 238m North-East.
None
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No ditch within 50m
None within 100m.
None within 100m.
The site was in good condition underfoot with the assessment being carried out during a period of unsettled weather with
occasional rain.
3.1 Visual Assessment (contd.)
Drainage Ditches:*
Springs:*
Wells:*
Comments:
(Integrate the information above in order to comment on: the potential suitability of the site, potential targets at risk, the suitability of the site to treat the wastewater
and the location of the proposed system within the site).
*Note and record water level
3.0 ON-SITE ASSESSMENT
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15:00 01-Jun-2026
0.2
3.2 Trial Hole (should be a minimum of 2.1m deep (3m for regionally important aquifers))
To avoid any accidental damage, a trial hole assessment or percolation tests should not be undertaken
in areas which are at or adjacent to significant sites, (e.g. NHAs, SACs, SPAs, and/or Archaeological
etc.), without prior advice from National Parks and Wildlife Service or the Heritage Service.
Depth of trial hole (m):
Depth from ground surface Depth from ground surface
to bedrock (m) (if present): to water table (m) (if present):
Depth of water ingress: Rock type (if present):
Date and time of excavation: Date and time of examination:
Depth of
Surface and
Subsurface Soil/Subsoil
Percolation Texture & Plasticity and Soil Density/ Colour**** Preferential
Tests Classification** dilatancy*** Structure Compactness flowpaths
0.1 m
0.2 m
0.3 m
0.4 m
0.5 m
0.6 m
0.7 m
0.8 m
0.9 m
1.0 m
1.1 m
1.2 m
1.3 m
1.4 m
1.5 m
1.6 m
1.7 m
1.8 m
1.9 m
2.0 m
2.1 m
2.2 m
2.3 m
2.4 m
2.5 m
2.6 m
2.7 m
2.8 m
2.9 m
3.0 m
3.1 m
3.2 m
3.3 m
3.4 m
3.5 m
Likely Subsurface Percolation Value:
Likely Surface Percolation Value:
Note: *Depth of percolation test holes should be indicated on log above. (‘Enter Surface or Subsurface at depths as appropriate).
** See Appendix E for BS 5930 classification.
*** 3 samples to be tested for each horizon and results should be entered above for each horizon.
**** All signs of mottling should be recorded.
20
30
GRASS ROOTS
NONE
===================
BROWN
PALE
BROWN
===========
SOFT
UNCOMPACT
===================
SILT / CLAY
TOP SOIL
SILT / CLAY subsoil
=================
Water table 1.9m
Base of trial hole 2.1m
09:30 03-Jun-2026
1.9
2.1
S
SS
3 threads –70mm
CRUMB
ribbons – dilatant
3 threads - 90mm
BLOCKY
ribbons - dilatant
===============
============
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The trial hole was 2.1m deep with two distinct layers. Top-soil that was crumb in nature and below that sub-soil that was a
blocky in nature and pale brown in colour. The water table was at 1.9m after a 48hrs.Good aerated soil to the bottom of the
trial hole with lots of earth worms.
3.2 Trial Hole (contd.) Evaluation:
3.3(a) Subsurface Percolation Test for Subsoil
Step 1: Test Hole Preparation
Percolation Test Hole 1 2 3
Depth from ground surface
to top of hole (mm) (A)
Depth from ground surface
to base of hole (mm) (B)
Depth of hole (mm) [B - A]
Dimensions of hole
[length x breadth (mm)]
Step 2: Pre-Soaking Test Holes
Pre-soak start Date
Time
2nd pre-soak Date
start Time
Each hole should be pre-soaked twice before the test is carried out.
Step 3: Measuring T100
Percolation Test Hole No. 1 2 3
Date of test
Time filled to 400 mm
Time water level at 300 mm
Time (min.) to drop 100 mm (T100 )
Average T100
If T100 > 480 minutes then Subsurface Percolation value >120 – site unsuitable for discharge to ground
If T100 ≤ 210 minutes then go to Step 4;
If T100 > 210 minutes then go to Step 5;
11:05
02-Jun-2026
11:05
02-Jun-2026
11:05
02-Jun-2026
18:30
01-Jun-2026
18:30
01-Jun-2026
18:30
01-Jun-2026
65.00
400 400 400
800 800 800
400 400 400
320 x 270 290 x 290 300 x 320
03-06-2026 03-06-2026 03-06-2026
09:30 09:30 09:30
10:30 10:40 10:35
60.00 70.00 65.00
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30.28
The T test was a pass and this soil will be suitable to polish final effluent from an advanced treatment system.
Step 4: Standard Method (where T100 ≤ 210 minutes)
Percolation
Test Hole
1
2
3
Fill no. Start Finish ∆t (min)
Time Time
(at 300 (at 200
mm) mm)
Start Finish ∆t (min)
Time Time
(at 300 (at 200
mm) mm)
Start Finish ∆t (min)
Time Time
(at 300 (at 200
mm) mm)
1
2
3
Average ∆t
Value
13:20 16:25 185.00
118.33
13:40 16:50 190.00
123.33
13:35 16:40 185.00
121.67
Average ∆t/4 =
[Hole No.1] 29.58 (t1)
Average ∆t/4 =
[Hole No.2] 30.83 (t2)
Average ∆t/4 =
[Hole No.3] 30.42 (t3)
Result of Test: Subsurface Percolation Value = (min/25 mm)
Comments:
Step 5: Modified Method (where T100 > 210 minutes)
T- Value T - Value Hole 1 = (T 1 )
T- Value T - Value Hole 3 = (T2)
T- Value T- Value Hole 2 = (T2 )
Result of Test: Subsurface Percolation Value =
(min/25 mm)
Comments:
0.00 0.00
0.00
0.00
10:30 11:40 70.00
10:40 11:55 75.00
10:35 11:45 70.00
11:40 13:20 100.00
11:55 13:40 105.00
11:45 13:35 110.00
Percolation
Test Hole No.
1
Fall of water
in hole (mm)
Time
Factor
Start
Time
Finish
Time
Time
of fall
Kfs
= Tf
T –
Value
= Tf hh:mm hh:mm (mins) / Tm = 4.45
= Tm / Kfs
300 - 250 8.1 0.00
250 - 200 9.7 0.00
11.9 0.00 200 - 150
150 - 100 14.1 0.00
Average
Percolation
Test Hole No.
2
Fall of water
in hole (mm)
Time
Factor
Start
Time
Finish
Time
Time
of fall
Kfs
= Tf
T –
Value
= Tf hh:mm hh:mm (mins) / Tm = 4.45
= Tm / Kfs
300 - 250 8.1 0.00
250 - 200 9.7 0.00
11.9 0.00 200 - 150
150 - 100 14.1 0.00
Average
Percolation
Test Hole No.
3
Fall of water
in hole (mm)
Time
Factor
Start
Time
Finish
Tim§e
Time
of fall
Kfs
= Tf
T –
Value
= Tf hh:mm hh:mm (mins) / Tm = 4.45
= Tm / Kfs
300 - 250 8.1 0.00
250 - 200 9.7 0.00
11.9 0.00 200 - 150
150 - 100 14.1 0.00
Average
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3.3(b) Surface Percolation Test for Soil
Step 1: Test Hole Preparation
Percolation Test Hole 1 2 3
Depth from ground surface
to top of hole (mm)
Depth from ground surface
to base of hole (mm)
Depth of hole (mm)
Dimensions of hole
[length x breadth (mm)]
Step 2: Pre-Soaking Test Holes
Pre-soak start Date
Time
2nd pre-soak Date
start Time
Each hole should be pre-soaked twice before the test is carried out.
Step 3: Measuring T100
Percolation Test Hole No.
Date of test
Time filled to 400 mm
Time water level at 300 mm
1 2 3
03-Jun -26 03-Jun -26 03-Jun -2026
09:35 09:35 09:35
10:30 10:30 10:25
Time to drop 100 mm (T100 )
Average T100
If T100 > 480 minutes then Surface Percolation value >90 – site unsuitable for discharge to ground
If T100 ≤ 210 minutes then go to Step 4;
If T100 > 210 minutes then go to Step 5;
11:05
02-Jun-2026
11:05
02-Jun-2026
11:05
02-Jun-2026
18:35
01-Jun-2026
18:35
01-Jun-2026
18:35
01-Jun-2026
53.33
400 400 400
400 400 400
290 x 290 300 x 280 280 x 280
55.00 55.00 50.00
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22.92
10:30 11:35 65.00
10:30 11:30 60.00
10:25 11:15 50.00
11:35 13:00 85.00
11:30 12:50 80.00
11:15 12:45 90.00
Step 4: Standard Method (where T100 ≤ 210 minutes)
)
Result of Test: Surface Percolation Value = (min/25 mm)
Comments:
Step 5: Modified Method (where T100 > 210 minutes)
T- Value T - Value Hole 1 = (T 1 )
T- Value T - Value Hole 3 = (T2)
Result of Test: Surface Percolation Value =
(min/25 mm)
Comments:
0.00
0.00
0.00
The topsoil at this site is of good quality and may be used if required to build the percolation area up level.
Percolation
Test Hole
1
2
3
Fill no. Start Finish ∆T (min)
Time Time
(at 300 (at 200
mm) mm)
Start Finish ∆T (min)
Time Time
(at 300 (at 200
mm) mm)
Start Finish ∆T (min)
Time Time
(at 300 (at 200
mm) mm)
1
2
3
Average ∆T
Value
13:00 15:20 140.00
96.67
12:50 15:00 130.00
90.00
12:45 14:50 125.00
88.33
Average ∆T/4 =
[Hole No.1] 24.17 (T1 )
Average ∆T/4 =
[Hole No.2] 22.50 (T2 )
Average ∆T/4 =
[Hole No.3] 22.08 (T3
Percolation
Test Hole No.
1
Fall of water
in hole (mm)
Time
Factor
Start
Time
Finish
Time
Time
of fall
Kfs
= Tf
T –
Value
= Tf hh:mm hh:mm (mins) / Tm = 4.45
= Tm / Kfs
300 - 250 8.1 0.00
250 - 200 9.7 0.00
11.9 0.00 200 - 150
150 - 100 14.1 0.00
Average
Percolation
Test Hole No.
2
Fall of water
in hole (mm)
Time
Factor
Start
Time
Finish
Time
Time
of fall
Kfs
= Tf
T –
Value
= Tf hh:mm hh:mm (mins) / Tm = 4.45
= Tm / Kfs
300 - 250 8.1 0.00
250 - 200 9.7 0.00
11.9 0.00 200 - 150
150 - 100 14.1 0.00
Average T- Value T- Value Hole 2 = (T2 ) 0.00
Percolation
Test Hole No.
3
Fall of water
in hole (mm)
Time
Factor
Start
Time
Finish
Time
Time
of fall
Kfs
= Tf
T –
Value
= Tf hh:mm hh:mm (mins) / Tm = 4.45
= Tm / Kfs
300 - 250 8.1 0.00
250 - 200 9.7 0.00
11.9 0.00 200 - 150
150 - 100 14.1 0.00
Average
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1.
2.
3.
Discovery Series 1:50,000 Map
indicating overall drainage,
groundwater flow direction and
housing density in the area.
Supporting maps for vulnerability,
aquifer classification, soil, subsoil,
bedrock.
North point should always be included.
(a) Scaled sketch of site showing
measurements to Trial Hole location
and
Percolation Test Hole locations,
wells and
direction of groundwater flow
(if known),
proposed house (incl. distances from
boundaries)
adjacent houses,
watercourses,
significant sites
(i)
5.
6.
7.
and other relevant features.
Site specific cross sectional drawing
of the site and the proposed layout1
should be submitted.
Photographs of the trial hole, test holes
and site including landmarks (date and
time referenced).
Pumped design must be designed by a
suitably qualified person.
3.4 The following associated Maps, Drawings and Photographs should be appended to this site
characterisation form.
1 The calculated percolation area or polishing filter area should be set out accurately on the site layout drawing in accordance with the code
of practice’s requirements.
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22.92
Mechanical aeration system and a soil polishing filter to be installed and constructed to EPA 2021 specifications. I recommend
60m of percolation trench in the soil polishing filter consisting of 6 lengths of trench each measuring 10m. The invert of th e
percolation trenches should be at 0.6m with 0.9m pervious unsaturated soil below to ensure proper polishing of the final
effluent. Ensure that the final effluent from the mechanical aeration system is distributed evenly to each of the six percola tion
trenches. It is important to ensure that the percolation trenches and related pipe work are put in at the correct slope. A surface
water drain measuring 1m deep shall be employed (min 2m away) up-slope from the soil polishing filter to divert surface water
away from the percolation area and to prevent the water table rising in wet weather.
NOTE: It is very important to ensure that the aeration pump remains on at all times on the mechanical aeration system or
otherwise the system will revert to septic conditions causing odors and poorer quality effluent which may lead to clogging of
the percolation trenches.
Integrate the information from the desk study and on-site assessment (i.e. visual assessment, trial hole and
percolation tests) above and conclude the type of system(s) that is (are) appropriate. This information is also used
to choose the optimum final disposal route of the treated wastewater.
Slope of proposed infiltration / treatment area:
Are all minimum separation distances met?
Depth of unsaturated soil and/or subsoil beneath invert of gravel
(or drip tubing in the case of drip dispersal system)
Percolation test result: Surface: Sub-surface:
Not Suitable for Development Suitable for Development
Identify all suitable options Discharge Route 1
Groundwater 1. Septic tank system (septic tank and
percolation area) (Chapter 7) No
2. Secondary Treatment System
(Chapters 8 and 9) and soil polishing filter Yes
(Section 10.1)
3. Tertiary Treatment System and Infiltration /
treatment area (Section 10.2) Yes
5.0 SELECTED DWWTS
Propose to install:
and discharge to:
Invert level of the trench/bed gravel or drip tubing (m)
Site Specific Conditions (e.g. special works, site improvement works testing etc.
1 A discharge of sewage effluent to “waters” (definition includes any or any part of any river, stream, lake, canal, reservoir, aquifer, pond, watercourse or other
inland waters, whether natural or artificial) will require a licence under the Water Pollution Acts 1977-90. Refer to Section 2.4.
4.0 CONCLUSION of SITE CHARACTERISATION
0.60
Ground Water
Secondary Treatment System and soil polishing filter
✔
30.28
0.90
✔
1:17
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30.00
2.90
BAF TREATMENT SYSTEM
SYSTEM TYPE: Septic Tank Systems (Chapter 7)
Tank Capacity (m3) Percolation Area Mounded Percolation Area
No. of Trenches No. of Trenches
Length of Trenches (m) Length of Trenches (m)
Invert Level (m) Invert Level (m)
SYSTEM TYPE: Secondary Treatment System (Chapters 8 and 9) and polishing filter (Section 10.1)
Secondary Treatment Systems receiving septic tank effluent
(Chapter 8)
Packaged Secondary
Treatment Systems
receiving raw wastewater
(Chapter 9)
Media Type Area (m2)* Depth of Filter Invert Level
Sand/Soil
Soil
Type
Capacity PE
Constructed Wetland Sizing of Primary Compartment
Other m3
Polishing Filter*: (Section 10.1)
Surface Area (m2)*
Option 1 - Direct Discharge
Surface area (m2)
Option 2 - Pumped Discharge
Surface area (m2)
Option 3 - Gravity Discharge
Trench length (m)
Option 4 - Low Pressure
Pipe Distribution
Trench length (m)
Option 5 - Drip Dispersal
Surface area (m2)
SYSTEM TYPE: Tertiary Treatment System and infiltration / treatment area (Section 10.2)
Identify purpose of tertiary
treatment
Provide performance information
demonstrating system will provide
required treatment levels
Provide design information
DISCHARGE ROUTE:
Groundwater Hydraulic Loading Rate * (l/m 2.d) Surface area (m2)
Surface Water ** Discharge Rate (m3/hr)
* Hydraulic loading rate is determined by the percolation rate of subsoil
** Water Pollution Act discharge licence required
6.0 TREATMENT SYSTEM DETAILS
0.04
30.00
60.00 30.00
6
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0868169162
Michael
System to be signed off by a suitably qualified person and recommendations in section 5.0 to be adhered to. Package
treatment system must conform to EN 12566-3 standard. Package treatment system to be properly installed and certified by
company supplying the system in accordance with the EPA 2021 code of practice. Keep records of desludging for five years.
Desludge tank as recommended by manufacturer and periodically inspect the system for damage or surface ponding.
Maintenance contract to be agreed by company supplying the package treatment system and contract must be adhered to so
as to ensure that the system continues to function properly.
7.0 SITE ASSESSOR DETAILS
QUALITY ASSURANCE:
Installation & Commissioning
On-going Maintenance
Company:
Prefix: Mr First Name: Surname:
Address:
Qualifications/Experience:
Date of Report:
Phone: E-mail
Indemnity Insurance Number:
Signature:
6.0 TREATMENT SYSTEM DETAILS
RPI-IE000946-00
biolabsirl@outlook.com
04-Jun-2026
GSI / EPA CERTIFIED
Iterera, Scotstown, Co Monaghan.
Holohan
Biolabs
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WELLS AND BOREHOLES ADJACENT TO THE SITE
SOURCE PROTECTION DATA (N/A)
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RIVERS AND LAKES
AQUIFER CATEGORY LI
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VULNERABILITY MODERATE
BEDROCK DSL
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SOIL: ACID BROWN EARTH. AminDW
SUBSOIL: LIMESTONE TILL TLs
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AERIAL VIEW OF PERCOLATION SITE
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VIEWS OF PERCOLATION SITE
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VIEWS OF PERCOLATION SITE
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TRIAL HOLE ON DAY OF EXCAVATION
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TRIAL HOLE TWO DAYS AFTER EXCAVATION
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T1 T2
T3
T TEST HOLES
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P1 P2
P3
P TEST HOLES
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OUTLINE SPECIFICATIONS FOR MOUNDED SOIL POLISHING FILTER
1. Treated effluent from the mechanical aeration sump unit shall be pumped
intermittently or fed by gravity if the levels allow to the distribution chamber
feeding the 6 percolation trenches.
2. The slope of the percolation trenches from the distribution chamber shall be 1
in 200.
3. The length of each of the 6 percolation trenches shall be 10m. Total length
60m.
4. The separation distance between the percolation trenches shall be 2m (ie
2.5m centre to centre)
5. Percolation pipes shall be 100mm diameter smooth wall uPVC sewer pipes,
perforated at 4, 6 and 8 o’clock. Perforations shall be 8mm diameter, at
75mm centre’s along the pipe. Holes shall be checked before installation to
ensure they are free from debris.
6. The width of each percolation trench shall be 500mm.
7. The depth of each percolation trench shall be 600mm below the mound
surface.
8. Percolation pipes shall be laid on a 250mm bed of washed gravel, having
particles in the range of 8 - 32mm.
9. Pipe surround shall be washed gravel, having particle size in the range 8 –
32mm.
10. Pipe cover shall be 150mm depth of washed gravel, having particle size in
the range of 8 – 32mm.
11. Geotextile layer to be placed on top of this followed by 100mm topsoil to
top of mound.
12. Geotextile shall be in accordance with EN ISO 10319.
Access / inspection points and vents shall be provided for the ends of the
percolation pipes. Covers shall be visible and installed to prevent the
ingress of water. They shall be suitable for rodding and scouring purposes.
13. A surface land drain 1m deep shall be employed upslope from the raised
mound soil polishing filter and not closer than 2m to divert surface
water away from it.
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SCHEDULE OF SITE SEPARATION DISTANCES
PACKAGE TREATMENT SYSTEM
. Minimum distance to any dwelling = 7m
. Minimum distance to site boundary = 3m
. Minimum distance to trees = 3m
. Minimum distance to roads = 4m
. Minimum distance to slope breaks = 10m
. Minimum distance to watercourse / streams = 10m
. Minimum distance to soakaway = 10m
. Minimum distance to open drain = 10m
. Minimum distance to lake or foreshore = 50m
(Table 6.3 EPA Code of Practice 2021)
POLISHING FILTER
. Minimum distance to any dwelling = 10m
. Minimum distance to site boundary = 3m
. Minimum distance to trees = 3m
. Minimum distance to roads = 4m
. Minimum distance to slope breaks = 10m
. Minimum distance to water course / stream = 10m
. Minimum distance to soakaway = 10m
. Minimum distance to open drain = 10m
. Minimum distance to lake or foreshore = 50m
. Minimum distance to up-gradient well = 15m
. Minimum distance well on same level = 30m
. Minimum distance to down-gradient well = 40m
(Table 6.1 EPA Code of Practice 2021 unless stated otherwise)
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0.6M
SUBSOIL MIN 0.9M
150MM WASHED
STONE ABOVE PIPE
O 100MM PIPE
250MM WASHED
STONE BELOW PIPE
TOPSOIL
100MM
WATER TABLE
GROUND LEVEL
GEOTEXTILE LAYER
INVERT OF TRENCH
EACH TRENCH 500MM WIDE
SECTION THROUGH SUBSOIL PERCOLATION SYSTEM
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