annual biological compliance monitoring … · an environmental scientist from bnm thenvironmental...
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For the Attention of: Mrs. Phoebe Dillane
Bord na Móna
Drehid Waste Management Facility,
Killinagh Upper
Carbury,
Co. Kildare
Prepared by: Mr. Stephen Stapleton
Environmental Scientist
Reviewed by: Mr. Shaun Russell
Environmental Scientist
Report No: ECS5259 _Biological
Monitoring Date: 4th September 2016
Report Date: 14th October 2016
This report shall not be reproduced except in full, without the approval of BNM Environmental. All queries concerning the report or its contents should be
forwarded to the Monitoring Team Leader.
_______________________________________________________________________________________________________
ANNUAL BIOLOGICAL COMPLIANCE
MONITORING AT THE BORD NA MÓNA
DREHID WASTE MANAGEMENT FACILITY,
CO. KILDARE IN COMPLIANCE WITH IED
LICENCE REGISTER NO. W0201-03
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EXECUTIVE SUMMARY
Bord na Móna Waste Management are required to conduct biological monitoring on an annual basis at
the Drehid facility in accordance with Waste Licence Register No.W0201-03. BNM Environmental was
commissioned to perform the sampling and analysis. The site was subsequently visited by a BNM
Environmental Scientist on the 4th of September 2016 to undertake the assessment.
Sampling was undertaken on the Cushaling River, downstream of the Drehid facility. The biological
quality of the stream was deemed a Q3-4 indicating ‘slightly polluted waters’.
As the Cushaling River rises on-site, no upstream location is available from which to obtain a sample
and assign a Q-value.
No deterioration in biological quality was noted since the previous monitoring in September 2015.
This report is certified as accurate and representative of the sampling and associated analysis carried
out.
Respectively Submitted,
__________________________ __________________________
Mr. Stephen Stapleton Mr. Shaun Russell
Environmental Scientist Environmental Scientist
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Table of Contents
1. INTRODUCTION ............................................................................................................................ 4
2. SAMPLING LOCATION ................................................................................................................. 5
3. METHODOLOGY ........................................................................................................................... 6
3.1 Biological Sampling ................................................................................................................. 6
3.2 Biological Quality Rating (Q-Rating) ........................................................................................ 6
4. PRESENTATION OF RESULTS .................................................................................................... 9
4.1 Biological Q-rating Results ...................................................................................................... 9
5. INTERPRETATION OF RESULTS ................................................................................................ 9
5.1 Interpretation of the biological quality of the receiving watercourse ........................................ 9
6. CONCLUSIONS ............................................................................................................................. 9
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1. INTRODUCTION
Bord na Móna Waste Management are required to conduct biological monitoring on an annual basis
at the Drehid facility in accordance with Waste Licence Register No.W0201-03. BNM Environmental
was commissioned to perform the sampling and analysis.
An Environmental Scientist from BNM Environmental visited the site on the 4th of September 2016 to
undertake a macroinvertebrate survey to determine the Q Index of the stream.
This report details the methodologies involved in the study and an interpretation of these findings.
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2. SAMPLING LOCATION
The most ideal point to obtain a biological sample was deemed to be located 3km west of the
Drehid Facility on the Cushaling River. As the river rises on the Drehid site there is no sampling
point upstream of the facility for analysis. The river is not part of the EPA’s National Biological
Monitoring Programme.
Figure 1 below shows the sampling point (SW1) and the Landfill Infrastructure.
Figure 1:- Location of Biological sampling point
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3. METHODOLOGY
3.1 BIOLOGICAL SAMPLING
The macroinvertebrate sample was taken in accordance with I.S. EN ISO 5667-3:2004: Water
Quality – Sampling – Part 3: Guidance on the Preservation and Handling of Water Samples and
ISO 7828: Water Quality – Methods of biological sampling – Guidance on Handnet sampling of
aquatic benthic macro-invertebrates. A two minute kick sample was taken with stone washing and
the sample was preserved in 70% ethanol. The sample was subsequently analysed following the
EPA’s Q-Value methodology (Toner et al., 2005).
All samples are held in the laboratory for 6 months after the issue of the report.
Habitat, as structured by in-stream and surrounding topographical features, is a major determinant
of aquatic community quality. Both the quality and quantity of available habitat affect the structure
and composition of resident biological communities. As such, on site habitat characteristics were
recorded and referenced to results obtained from the sample.
3.2 BIOLOGICAL QUALITY RATING (Q-RATING)
This is a Pollution Rating Index, which has been developed to measure the response of certain
key macroinvertebrate species or groups to pollution. The Q-Rating system has been
implemented by the Environmental Protection Agency in Ireland as the standard means to
assess the quality of any part of a stream based principally on the composition of
macroinvertebrate communities/faunal groups present and their general sensitivity to organic
pollution. The Biological Quality Rating forms part of S.I No. 258 of 1998, an amendment to
the Local Government (Water Pollution) Act, 1977. The rating system recognises five
macroinvertebrate groups ranging from A to E (i.e. most sensitive to most tolerant) and relates
their relative abundance, from a standard 2 minute sample, to a quality rating known as a Q
Index. The part of the stream or river surveyed may subsequently be assigned a Q rating from
5 to 1 (i.e. pristine, unpolluted to grossly polluted). Table 3.1 presents Part I of the First
Schedule of S.I No. 258 of 1998 which groups the macroinvertebrate indicator groups. Table
3.2 presents Part II of the First Schedule of S.I No. 258 of 1998, which relates the Biological Q
Rating and the five faunal groups. Table 3.3 quantifies the various abundance categories.
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Table 3.1 Biological Quality Rating System for Rivers (Part I)
Indicator Groups: Key Taxa (Macroinvertebrate Communities/Faunal Groups and their General Sensitivity to Organic
Pollution)
Group A Sensitive
Group B Less Sensitive
Group C Tolerant
Group D Very Tolerant
Group E Most Tolerant
Perlidae Leuctridae Tricladida Hirudinea Tubificidae
Chloroperlidae Capniidae
Nemouridae Taeniopterygidae Baetidae Leptophlebiidae
Ancylidae Neritidae Unionidae Astacidae
Mollusca (excl. Ancylidae, Margaritiferidae, Neritidae & Unionidae)
Chironomus
Ephemerellidae
Perlodidae Ephemeridae Gammarus Asellus
Potamanthidae Caenidae Chironomidae
Heptageniidae Siphlonuridae Margaritiferidae
Cased Trichoptera (excl. Limnephilidae Hydroptilidae & Glossosomatidae)
Limnephilidae Hydroptilidae Glossosmatidae UncasedTricoptera
(excl. Chironomus & Rheotanytarsus)
Odonata (excl. Coenagriidae)
Coleoptera Coenagriidae
Salidae
Tipulidae
Aphelocheirus Simulidae
Rheotanytarsus Hemiptera (excl.Aphelocheirus)
Hydracarina
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Table 3.2: Relationship between Biological Quality Rating/Index (Q)
and the Five Faunal Groups (Part II)
Substrata Q Index Faunal Group
Eroding Substrata (i.e. the shallower, fast-flowing
areas)
Q5 Q4 Q3 Q2 Q1
A
#
++
-
-
-
B
#
#
+/-*
-
-
C
++
<
#
+/-
-
D
+/-
++
<
#
+/-
E
+/-
+/-
++
<
#
(excl. B rhodani which may be
dominant)
Depositing Substrata
(i.e. the deeper, slower-flowing areas)
Q5 Q4 Q3 Q2 Q1
++ +/- - - -
# < - - -
< #
++ - -
++ ++ < < -
++ ++ < < #
# = numerous or dominant < = Common ++ = Present in small numbers + = Scarce +/- = Scarce or absent - = absent
Table 3.3 - Quantification of Macroinvertebrates Abundance Categories
Abundance Approximate Frequency of Occurrence
Category Number* Percentage
One 1 -
Scarce/few 2 - 5 <1%
Present in small numbers 6 - 10 <5%
Present in fair numbers 11 - 20 5 - 10%
Common 21 - 50 10 - 20%
Numerous 51 - 100 25 - 50%
Abundant/Dominant 100 - 200 50 - 75%
Superabundant/Excessive 200+ >75%
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4. PRESENTATION OF RESULTS
4..1 BIOLOGICAL Q-RATING RESULTS
Table 4.2 Biological Q-Rating
Location SW1 Downstream of landfill
Q-Rating Q-3-4
Q-Rating
5, 4-5, 4 = unpolluted 3-4 = Slightly Polluted
3, 2-3 = Moderately Polluted 2,1-2, 1: Seriously Polluted
5. INTERPRETATION OF RESULTS
5.1 INTERPRETATION OF THE BIOLOGICAL QUALITY OF THE RECEIVING WATERCOURSE
The biological diversity of the kick sample taken at SW1 is used to assign a Biological Quality Index,
which is rated from 1 (seriously polluted) to 5 (clean conditions). The result of the Biological rating for
the receiving watercourse is presented in Table 4.1. See Appendix I for sample numbers and
composition. Sampling took place in the area deemed to have the most suitable conditions. As there
were no riffle areas the sample was obtained at a point where the water was shallowest and had the
greatest flow. SW1 is described as having a “depositing substrata”. The bed of the stream at the
sampling location did not have the most suitable substrate and mainly consisted of organic matter
such as dead leaves and twigs lying over a silty bottom with isolated patches of cobble and stone.
The watercourse was tunnelled and heavily shaded. Sampling took place in 35 – 45cm depth of
water. The width of the watercourse was 3.3m at the sampling point and there was very little in-
stream vegetation.
SW-1
In total, 7 species were identified at SW1 which constitutes low diversity, The Q-value was deemed to
be Q3-4 which indicates “slightly polluted” conditions. See Appendix I for sample numbers and
composition.
6. CONCLUSIONS
At SW1 there was a predominance of tolerant species and a lack of sensitive species, with low
species diversity and a depositing substratum. These factors resulted in SW1 being denoted with
value of Q3-4. No deterioration in biological quality was noted since the previous monitoring in
September of 2015.
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APPENDIX I
Field Sheets
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