Enva Ireland Limited Shannon · 2019. 10. 7. · Enva Ireland Limited - Shannon Project Reference: PR-394928-ACM-RP-EN-002 Enva Ireland Limited PR-394928_ACM_RP_EN_002_1_Enva Report

Enva Ireland Limited - Shannon

Groundwater Monitoring Round 2 Report 2019 Project Reference: PR-394928-ACM-RP-EN-002 06 August 2019

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Project Reference: PR-394928-ACM-RP-EN-002

Prepared for: Enva Ireland Limited PR-394928_ACM_RP_EN_002_1_Enva Report Q2 2019 Final.docx

AECOM

Quality information

Prepared by Checked by Verified by Approved by

Rebecca McGovern Graduate Environmental Scientist

Brendan McCarthy

Environmental Scientist

Kevin Forde

Associate Director

Fergus O'Regan

Senior Environmental Scientist

Revision History

Revision Revision Date Details Authorized Name Position

0 26 July 2019 Draft Issue Yes Kevin Forde Associate Director

1 06 August 2019 Final Yes Kevin Forde Associate Director

Prepared for:

Enva Ireland Limited

Smithstown Industrial Estate

Shannon

Clare

Prepared by:

Rebecca McGovern

Graduate Environmental Scientist

T: 021 4365 006

M: 087 3487 947

E: [email protected]

AECOM Ireland Limited

1st Floor, Montrose House

Carrigaline Road

Douglas

Cork

T: 021 436 5006

aecom.com

© 2019 AECOM Ireland Limited. All Rights Reserved.

This document has been prepared by AECOM Ireland Limited (“AECOM”) for sole use of our client

(the “Client”) in accordance with generally accepted consultancy principles, the budget for fees and

the terms of reference agreed between AECOM and the Client. Any information provided by third

parties and referred to herein has not been checked or verified by AECOM, unless otherwise

expressly stated in the document. No third party may rely upon this document without the prior and

express written agreement of AECOM.

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AECOM

Table of Contents

1. Introduction.............................................................................................................................. 1

2. Scope of Works ....................................................................................................................... 2

2.1 Water Level Measurement ............................................................................................. 2

2.2 Well Purging .................................................................................................................. 2

2.3 Groundwater Sampling and Water Quality Measurements .............................................. 2

3. Results .................................................................................................................................... 3

3.1 Field Observations ......................................................................................................... 3

3.2 Groundwater Flow Direction ........................................................................................... 3

3.3 Data Assessment ........................................................................................................... 3

3.3.1 Assessment Criteria ....................................................................................................... 3

3.4 Analytical Results .......................................................................................................... 4

3.4.1 Volatile Organic Contaminants (VOCs) ........................................................................... 4

3.4.2 Semi-Volatile Organic Contaminants (SVOCs) ............................................................... 5

3.4.3 Hydrocarbons ................................................................................................................ 5

3.4.4 Miscellaneous Parameters – Waste Licensed Wells ....................................................... 5

3.5 Monitored Natural Attenuation Monitoring 2019 .............................................................. 6

4. Conclusions ............................................................................................................................. 9

5. Recommendations ................................................................................................................. 10

Appendix A - Figures

Appendix B - Tables

Appendix C - Schedule of Analysis

Appendix D - Validated Laboratory Results

Appendix E - Monitored Natural Attenuation Monitoring - Volatile Organic Compound

Data

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Enva Ireland Limited PR-394928_ACM_RP_EN_002_1_Enva Report Q2 2019 Final.docx

AECOM 1

1. Introduction

AECOM Ireland Limited (AECOM) is pleased to present this report to Enva Ireland Limited (Enva) for

the Quarter 2 (Q2-June) 2019 groundwater monitoring round conducted at the Enva Shannon Facility,

Smithstown, Shannon, Co. Clare (the site).

A site location plan is presented as Figure 1.

Works were completed in accordance with AECOM Proposal Number PR-394928, ‘Enva Shannon

Groundwater Monitoring 2019’, dated, 23 January 2019. The project was approved by Enva on 18

January 2019 under their purchase order number 112690.

Enva has a network of nine on-site groundwater monitoring wells and five off-site groundwater

monitoring wells. Three off-site wells are located to the southeast in a parking area and two off-site

groundwater monitoring wells located on an adjacent site (Chemifloc) to the west.

A site layout plan showing groundwater monitoring well locations is presented in Figure 2.

Under the terms of the site’s Waste Licence (W0041-01), Enva are required to monitor the quality of

groundwater in on-site monitoring wells MW3, MW4S and MW5 at quarterly intervals for a range of

organic and inorganic parameters.

A five-year monitored natural attenuation (MNA) remediation program was completed between 2002

and 2007, which demonstrated that volatile organic compound (VOC) concentrations in groundwater

underlying the Enva site are declining and that there are no sensitive receptors located in the vicinity

of the site.

Given the long timescales involved for the degradation of chlorinated solvents, it was recommended

that the MNA remediation program be undertaken on a reduced scope following the completion of the

five-year MNA program.

As such, the Environmental Protection Agency (EPA) requires that Enva monitor groundwater quality

in groundwater from five on-site wells (MW4S, MW8, MW9, MW10 and the on-site Enva Production

Well) for VOCs and a range of redox indicator compounds on an annual basis. This MNA assessment

is typically conducted during the Q2 (June) monitoring round each year.

The Q2 2019 Waste Licence groundwater monitoring and the annual MNA groundwater monitoring

was completed by AECOM on 27 June 2019.

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AECOM 2

2. Scope of Works

The following scope of work was completed by an experienced AECOM field scientist on 27 June

2019:

• Water level measurement at all accessible monitoring wells, both on and off-site

• Well purging and measurement of water quality parameters at monitoring wells MW3, MW4S,

MW5, MW8, MW9 and MW10

• Groundwater sampling and analysis from monitoring wells MW3, MW4S and MW5 in accordance

with Waste Licence monitoring requirements

• Groundwater sampling and analysis from monitoring wells MW4S, MW8, MW9, MW10 and the

site’s Production Well as part of the MNA assessment programme

2.1 Water Level Measurement

Measurement of water levels was completed in all accessible on-site monitoring wells (MW3, MW4S,

MW4D, MW5, MW6, MW7, MW8, MW9 and MW10), in monitoring wells located on the Chemifloc site

(MW1 and MW2) and in wells located to the southeast in a parking area outside of the site boundary

(MW11, MW12 and MW13).

At each well, an interface probe was used to monitor depth to groundwater and total depth of the well

to assess the presence of free phase product.

2.2 Well Purging

The volume of standing water in each of the groundwater monitoring wells to be sampled was

calculated based on measured water levels. Between two and three times this volume was then

purged from the wells. Where a well purged dry before three well volumes were removed, the well

was allowed to recover and then sampled.

Water quality field measurements were taken toward the end of purging using a calibrated water

quality field meter in a flow-through cell fitted to the sampling tubing (where possible). Pumping

continued until stable field measurements were recorded. Field measurements including pH,

temperature, electrical conductivity (EC), dissolved oxygen (DO) and oxidation-reduction potential

(ORP) were recorded.

Monitoring wells MW3, MW4S, MW5, MW8, MW9 and MW10 were purged and sampled using

dedicated, in-situ, inertial lift pumping equipment to minimise volatilisation and loss of VOCs.

The sample from the Enva Production Well was taken directly from a tap on the pipework from the

pump to the water holding tank.

2.3 Groundwater Sampling and Water Quality Measurements

Groundwater samples were collected from monitoring wells MW3, MW4S and MW5 and analysed for

the Waste Licence monitoring parameters, as detailed in Appendix C and Table 1.

Groundwater samples were also collected from monitoring wells MW4S, MW8, MW9, MW10 and the

on-site Enva Production Well and analysed for the MNA parameters, also detailed in Table 1.

Groundwater samples were collected into clean, laboratory-supplied sample containers. Samples

were handled by field staff wearing single use, disposable nitrile gloves, which were changed between

sampling locations to minimise cross-contamination.

Samples were labelled in the field and sample details were entered onto a chain of custody form.

Whilst on site and during transit, the groundwater samples were stored in a chilled cool box.

The samples were sent by overnight courier to Element Materials Technology U.K. (formerly Exova

Jones Environmental), an AECOM-approved laboratory.

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AECOM 3

3. Results

3.1 Field Observations

The following observations were recorded during purging and sampling on 27 June 2019:

• No floating or sinking free phase product was detected at any of the groundwater monitoring

wells dipped or sampled

• A slight sheen on the purged water was reported from sample MW9 but with no odour being

noted from the sample

• No evidence of contamination in the form of odours, sheens or separate phase liquids was

reported in the groundwater samples collected from wells MW3, MW4S, MW5, MW8, MW10 and

the Enva Production Well

Field measurements of water quality parameters are presented in Table 2 and are summarised below:

• pH values ranged from 7.17 (MW4S) to 8.03 (MW8) and were within the normal range for

groundwater at the site

• EC values ranged from 579 S/cm (MW3) to 2,504 S/cm (MW4S). EC values were above the

EPA Draft Interim Guideline Value (IGV) = 1,000 S/cm at wells MW4S, MW9 and MW10. All

recorded EC values (excluding MW4S) were less than the Upper Groundwater Threshold Value

(GTV) = 1,875 S/cm

• Field ORP readings were compensated, as recommended by the instrument manufacturer. The

adjusted redox (Eh) readings ranged between 115 mV (MW9) and 319 mV (MW3) and indicate

reducing (anaerobic) groundwater conditions

• Groundwater temperatures ranged between 12.4 C (MW4S and MW9) and 14.5 C (MW5). The

groundwater temperature readings were slightly above the normal range for groundwater in

Ireland (10.0 C to 12.0 C)

• Dissolved oxygen ranged from 0.53 mg/L (MW10) to 2.43 mg/L (MW5). Groundwater conditions

beneath the site can therefore be described as anaerobic (under saturated with respect to

oxygen) and are consistent with the redox potential readings noted above. For comparison, fully

aerated water at the observed temperatures would be expected to have dissolved oxygen

concentrations in the region of 10 mg/L

3.2 Groundwater Flow Direction

The direction of groundwater flow under natural gradient conditions is expected to follow the local

topographic gradient towards the south and southeast, eventually discharging to the Shannon

Estuary. However, abstraction from Enva’s Production Well prevents groundwater from following the

natural gradient, especially in the central part of the site.

It is not possible to measure the depth to water in the Enva Production Well located in the centre of

the site, as there is no access to the well.

Wellhead elevations and standing water level measurements in all other accessible wells were used

to calculate water table elevations and infer a groundwater flow pattern, which is presented as Figure

3.

In June 2019, the general groundwater flow direction is inferred to be to the south. Groundwater flow

in the central part of the site is inferred to be towards the Enva Production Well (see Figure 3).

3.3 Data Assessment

3.3.1 Assessment Criteria

The required groundwater analysis is listed in Schedule F.3 of the Waste Licence and is presented in

Appendix C. No Emission Limit Values are specified in the Licence for groundwater; therefore,

assessment criteria were sourced from published guidance selected based on the site setting.

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AECOM 4

The nearest surface water feature to the site is an unnamed stream located approximately 100 m east

of the site (not directly down hydraulic gradient of the site). This stream eventually flows into the

Shannon Estuary, which is located approximately 2 km south of the site.

The bedrock aquifer is classified by the Geological Survey of Ireland (GSI) as a ‘Locally Important

Aquifer (Ll) – Bedrock which is Moderately Productive only in Local Zones’. GSI records show that

there are nine groundwater monitoring wells located on or in the vicinity of the site. GSI records

indicate that there are no drinking water abstraction wells located in the vicinity of the site.

As such, general groundwater quality was assessed by comparing analytical results to the following

guidelines:

• European Union Environmental Objectives (Groundwater) (Amended) Regulations, 2016.

Statutory Instrument No. 366 of 2016 (GTVs)

• Environmental Protection Agency’s Draft Interim Guidelines Value for the Protection of

Groundwater, 2003 (IGVs)

3.4 Analytical Results

3.4.1 Volatile Organic Contaminants (VOCs)

VOC results for June 2019 are presented in Table 3.

Concentrations of vinyl chloride (VC) above the adopted assessment criteria (GTV of 0.375 g/L)

were recorded in all groundwater samples (excluding MW5). VC concentrations above the laboratory

method detection limit (MDL) (<0.1 g/L) ranged between 4.0 g/L (well MW3) and 708.6 g/L

(MW4S). There is no IGV defined for VC.

trans-1-2-Dichloroethene (tDCE) was detected above the GTV (0.375 g/L) at monitoring well MW4S

(9 g/L) only.

cis-1-2-Dichloroethene (cDCE) was detected above the GTV (0.375 g/L) and IGV (30 g/L) at

monitoring wells MW4S (2,777 g/L), MW8 (131 g/L), MW9 (265 g/L) and the Enva Production Well

(403 g/L). At wells MW3 (6 g/L) and MW10 (11 g/L), the cDCE concentrations exceeded the GTV

only.

Benzene was reported above both the GTV (0.75 g/L) and IGV (1.0 g/L) at well MW4S (7.9 g/L).

Benzene was detected at the MDL (<0.5 g/L) in groundwater from well MW10 and the result was

below the selected assessment criteria.

Toluene was detected at well MW4S only and at a concentration of 11 g/L, which marginally

exceeded the IGV (10 g/L) but not the GTV (525 g/L).

Trichloroethene (TCE) was detected above the adopted assessment criteria in groundwater samples

MW4S, MW8, MW9 and the Enva Production Well. Concentrations of TCE above the GTV (7.5 g/L)

and IGV (10 g/L) ranged between 23 g/L (Well MW4S) and 578 g/L (Enva Production Well).

Tetrachloroethene (PCE) was detected at concentrations above the adopted assessment criteria at

monitoring wells MW8 (118 g/L), MW9 (9 g/L) and the Enva Production Well (757 g/L). The GTV

for PCE is (7.5 g/L). Two IGVs are defined for PCE and the lower value is 10 g/L.

Ethylbenzene was detected at well MW4S only and at a concentration of 10 g/L, which is equal to

the IGV (10 g/L), there is no GTV defined.

p/m-Xylene and o-xylene were only detected at well MW4S, at 4 g/L and 10 g/L respectively; the

IGV for the sum of the xylenes is 10 g/L and there is no GTV defined.

Chloroform was detected at well MW4S at a concentration of 14 g/L, which marginally exceeded the

IGV (12 g/L). Chloroform was also detected in groundwater from well MW9 (2.0 g/L) but did not exceed any of the relevant assessment criteria. There is no GTV defined for chloroform.

Methyl tert butyl ether (MTBE), chloroethane, 1,1-dichloroethene, 1,1-dichloroethane and

1,1,1-trichloroethane (1,1,1-TCA) were detected above their respective MDLs at one or more wells,

but at concentrations that did not exceed the relevant assessment criteria (where available).

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AECOM 5

3.4.2 Semi-Volatile Organic Contaminants (SVOCs)

SVOC results for June 2019 are presented in Table 4.

2,4-Dichlorophenol and 4-methylphenol were the only two SVOCs detected above laboratory MDLs.

2,4-Dichlorophenol was detected at well MW4S at a concentration of 22 g/L.

4-Methylphenol was also detected in groundwater from well MW4S at the MDL (1.0 g/L), which

marginally exceeds the IGV (0.5 g/L). The phenol compounds detected at well MW4S exceeded the

IGV (0.5 g/L) for the sum of phenols.

3.4.3 Hydrocarbons

Hydrocarbon results for June 2019 are presented in Table 5.

No hydrocarbon compounds were detected above laboratory MDLs in groundwater from well MW3.

Diesel range organics (DRO) (C8-C40) were detected above the laboratory MDL (<10 g/L) in

groundwater from wells MW4S (1,000 g/L) and MW5 (1,810 g/L).

Concentrations of GRO (C4-C12) above the MDL (<10 g/L) were reported in groundwater samples

MW4S (1,276 g/L) and MW5 (579 g/L).

Total petroleum hydrocarbon (TPH) concentrations in groundwater from monitoring wells MW4S

(2,276 g/L) and MW5 (2,389 g/L) exceeded the assessment criteria (IGV of 10 g/L and GTV of

7.5 g/L).

The TPH concentration at well MW5 decreased slightly from 2,546 g/L in March 2019 to 2,389 g/L

in June 2019.

The TPH composition at well MW5 is generally different to that at well MW4S, being predominantly in

the C8-C40 carbon chain length range. Elevated DRO detections may be related to anecdotally-

reported historical issues with a former diesel fuel storage tank on a third party site adjacent to MW5.

3.4.4 Miscellaneous Parameters – Waste Licensed Wells

Miscellaneous parameters results for June 2019 are presented in Table 6.

Ammonium as NH4

In water, ammonia (NH3) typically dissociates to form the ammonium ion (NH4), particularly at pH

values of less than 7. Reported concentrations of ammoniacal nitrogen (as NH4) in groundwater

samples MW3 (0.22 mg/L) and MW4S (12.98 mg/L) exceeded the IGV (0.15 mg/L) and Upper GTV

(0.175 mg/L). Ammoniacal nitrogen in groundwater from well MW5 exceeded the Lower GTV

(0.065 mg/L) only. The concentration of ammonium at well MW4S increased from 11.73 mg/L in

March 2019 to 12.98 mg/L in June 2019.

The presence of ammonia in groundwater at MW3 and MW5 is considered to reflect the reducing

groundwater conditions beneath the site generally, whereas the more elevated ammonia

concentration at MW4S reflects historical groundwater issues in this area of the site.

Chloride

Reported concentrations of chloride ranged between 38 mg/L (MW3) and 558 mg/L (MW4S). The

concentrations of chloride reported for all groundwater samples collected in June 2019 exceeded the

Lower GTV (24 mg/L) and IGV (30 mg/L). The chloride concentration at well MW4S was also above

the Upper GTV of 187.5 mg/L. The chloride concentration at well MW4S increased slightly from

556 mg/L in March 2019 to 558 mg/L in June 2019.

Sulphate

Reported concentrations of sulphate ranged between 37 mg/L (MW5) and 371 mg/L (MW4S). The

reported sulphate concentration at well MW4S exceeded the GTV (187.5 mg/L) and the IGV

(200 mg/L).

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AECOM 6

Sodium

Reported concentrations of sodium ranged between 44 mg/L (MW3) and 486 mg/L (MW4S). The

reported sodium concentration at well MW4S exceeded the IGV (150 mg/L); there is no GTV defined

for sodium.

Potassium

Reported concentrations of potassium ranged between 2.4 mg/L (MW5) and 13.5 mg/L (MW4S). The

reported concentration of potassium in sample MW4S exceeded the IGV (5.0 mg/L). There is no GTV

defined for potassium.

Total Oxidised Nitrogen (TON)

TON was below the laboratory MDL (<0.2 mg/L) in groundwater samples MW3 and MW4S. TON was

detected above the MDL in groundwater from well MW5 (0.3 mg/L). There are no applicable

assessment criteria available for TON.

Total Organic Carbon (TOC)

Reported concentrations of TOC ranged from below the MDL (<2 mg/L) (MW3 and MW5) to 39 mg/L

(MW4S). There are no relevant assessment criteria available for TOC.

Cyclohexane Extractable Matter (CEM)

Concentrations of CEM ranged from below the MDL (<1 mg/L) (MW3) to 3 mg/L (MW4S and MW5).

There are no relevant assessment criteria available for CEM.

3.5 Monitored Natural Attenuation Monitoring 2019

A summary of groundwater monitoring VOC analytical data collected between 1998 and June 2019 is

presented in Appendix E for monitoring wells MW3, MW4S, MW5, MW8, MW9, MW10 and the Enva

Production Well.

Over this period, an overall decreasing trend is observed in concentrations of VOCs reported in all

seven wells sampled.

MW3

MW3 is located on the up-gradient western site boundary. Since January 2001, total VOC

concentrations are relatively low in groundwater from this well, typically fluctuating between 200 g/L

and 600 g/L (see Appendix E1). In general, the detected compounds are dominated by chlorinated

ethanes. Since June 2016, total VOC concentrations have been less than 100 g/L and in June 2019,

the total VOC concentration was 39 g/L.

MW4S

MW4S is located in the south eastern part of the site near the processing and storage areas. Since

2000, total VOC concentration in MW4S have decreased from 40,000 g/L between 2000 and 2003,

to approximately 10,000 g/L or lower since 2008, with some minor fluctuations.

An overall decrease in total VOC concentrations at well MW4S is noted between May 2012

(10,785 g/L) and the most recent monitoring round completed in June 2019 (4,285 g/L). Between

March 2019 and June 2019, the total VOC concentration decreased from 5,071 g/L to 4,285 g/L.

Groundwater samples collected from well MW4S have always had both the highest total VOC

concentrations and the greatest variety of organic compounds detected.

Based on data collected between 2011 and 2019:

• 65 - 89% of the organic compounds is accounted for by chlorinated ethenes, primarily the less

chlorinated forms of cDCE and VC

• 9 - 33% is accounted for chlorinated ethanes, primarily the more heavily chlorinated form 1,1,1-

TCA

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AECOM 7

• <1 - 3% is accounted for chlorinated methanes

• 1 - 3% is accounted for by other VOCs including BTEX hydrocarbons

MW5

MW5 is located next to Enva’s southwestern site boundary with Chemifloc. The lowest total VOC

concentrations are reported in groundwater samples collected at this well, usually less than 10 g/L.

No VOCs were detected in groundwater from well MW5 in June 2019. The highest reported VOC

concentration was 206 g/L in February 1998, as such, an overall decreasing trend is apparent, see

Appendix E3.

MW8

MW8 is located in the middle of the site close to the Enva Production Well. Between 2001 and 2007,

total VOC concentrations in groundwater from well MW8 were generally between 2,000 g/L and

8,000 g/L, see Appendix E4. Since December 2007 a decrease in total VOC concentrations has

been observed (concentrations decreased from 4,109 g/L in December 2007 to 328 g/L in June

2019).

The suite of VOCs present in groundwater from MW8 in June 2019 consists of 99% of chlorinated

ethenes and 1% chlorinated ethanes.

MW9

MW9 is located west of well MW4S, close to the southern site boundary. Prior to early-2005 the total

VOC concentration in groundwater from MW9 was below 1,000 g/L. However, between May 2005

and December 2007 total VOC concentrations followed an increasing trend, peaking at approximately

7,000 g/L in June 2007.

Since December 2007, an overall decreasing trend is apparent at this well, with total VOC

concentrations decreasing from 6,283 g/L in December 2007 to 665 g/L in June 2019. This is

illustrated in Appendix E5.

Between September 2002 and December 2007, the suite of VOCs present in groundwater from MW9

was dominated by chlorinated ethanes. However, analytical results collected between 2010 and 2019

indicate that the proportion of chlorinated ethanes present in groundwater from MW9 has decreased

from approximately 90% to 30%. As a consequence, the proportion of chlorinated ethenes has

increased from approximately 10% to 70% during the same time period.

MW10

Similar to MW9, the total VOC concentration trend in MW10 had been declining up to early-2005,

from over 9,000 g/L to less than 2,000 g/L. However, between May 2005 and December 2007 total

VOC concentrations followed an increasing trend, up to approximately 6,000 g/L. Since December

2007, a significant decrease in total VOC concentrations has been observed from 6,213 g/L in

December 2007 to 176 g/L in June 2019. This is illustrated in Appendix E6.

In general, the detected compounds are dominated by chlorinated ethanes (approximately 85% of

VOCs in June 2019).

Enva Production Well

The Enva Production Well is located in the middle of the site, close to well MW8. Between August

2001 and May 2006, total VOC concentrations fluctuated between 2,000 g/L and 3,000 g/L.

Between November 2006 and May 2011, the total VOC concentrations remained relatively stable at

approximately 2,000 g/L. Between May 2011 and June 2019, the total VOC concentrations were

generally below 2,000 g/L and the June 2019 total VOC result was 1,803 g/L.

The TCE concentration in the Enva Production Well increased from 27 g/L in June 2018 to 578 g/L

in June 2019. The PCE concentration increased from 12 g/L to 757 g/L over the same period.

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AECOM 8

Similar increases in TCE and PCE are not apparent in any of the other six wells analysed in 2019.

Similar elevated concentrations of TCE and PCE were recorded in June 2016 and in every round prior

to May 2011.

There is a known historic source of chloroethenes near the centre of the site immediately north of the

Enva Production Well.1 As TCE and PCE concentrations remain low in MW8 this is the likely source

of elevated TCE and PCE in the Enva Production Well.

A summary of total VOC concentrations is presented in Appendix E7.

The suite of VOCs detected in the Enva Production Well is similar to that present in groundwater from

well MW8 and is dominated by chlorinated ethenes.

Redox state within groundwater beneath the site

A summary of laboratory-analysed reduction-oxidation (redox) indicators is presented in Table 7, with

the field readings for DO and Eh reported in Table 2.

Eh values were generally less than 200 mV and DO values were typically below 2.50 mg/L in June

2019 and indicate reducing groundwater conditions in groundwater beneath the site.

Nitrate concentrations were low in the 5 wells sampled with only one detection above the laboratory

MDL (<0.2 mg/L) at well MW8 (0.5 mg/L).

Dissolved manganese was detected above background concentrations at all five wells included in the

MNA monitoring programme, being above 1 mg/L at monitoring wells MW4S, MW8, MW9 and MW10

and 0.20 mg/L at the Enva Production Well, indicating reducing groundwater conditions.

Concentrations of dissolved iron were detected above background concentrations, being above

1 mg/L at monitoring wells MW4S, MW8, MW9 and MW10 and being 0.1 mg/L at the Enva Production

Well, also indicating reducing groundwater conditions.

The prevalence of reducing groundwater conditions is conducive to the natural in-situ biodegradation

of chlorinated solvents through reductive dechlorination.

The relative concentrations of cDCE and VC, above TCE in groundwater from wells MW4S, MW8,

MW9, MW10 (to a lesser extent) and the Enva Production Well, indicate that reductive dechlorination

of chlorinated ethenes is occurring in groundwater beneath the site (see Appendices E2, E4, E5, E6

and E7).

Based on available analytical data, groundwater conditions beneath the site are predominantly

moderately to strongly reducing. Analytical data collected in June 2019 was consistent with previous

analytical data for redox indicators.

1 AECOM (2014) Shannon Hydrogeological Review and Assessment 47092526/CKRP0006

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AECOM 9

4. Conclusions

The findings of the Q2 (June) 2019 groundwater monitoring event are as follows:

• Groundwater contours indicate that groundwater, particularly in the central part of the Enva site is

influenced by pumping from the Enva Production Well

• The general direction of groundwater flow under Q2 2019 hydrogeological conditions is to the

south

• The highest concentration of VOCs was reported in the groundwater sample collected from

monitoring well MW4S (total VOCs 4,285 g/L). Well MW4S is located in the southern part of the

site

• The groundwater sample collected from well MW4S contained concentrations of VC (708.6 g/L),

TCE (23 g/L), cDCE (2,777 g/L), tDCE (9 g/L), benzene (7.9 g/L), toluene (11 g/L),

ethylbenzene (10 g/L) and total xylenes (14 g/L) above the assessment criteria

• MW3 is located in the northwest of the site. The groundwater sample collected from well MW3

contained concentrations of VC (4 g/L) and cDCE (6 g/L) above the assessment criteria and

the total VOC concentration was 39 g/L

• No VOCs were detected in the groundwater sample collected from well GW5

• TCE and PCE concentrations in the Enva Production Well have fluctuated in recent years. There

is a known historic source of chloroethenes near the centre of the site immediately north of the


• 2,4-Dichlorophenol and 4-methylphenol were the only two SVOC detected above MDLs in June

2019. 2,4-Dichlorophenol and 4-methylphenol were detected at well MW4S at a concentration of

22 g/L and 1.0 g/L in groundwater from well MW4S. 2,4-Dichlorophenol and 4-methylphenol

exceeded the IGV for the sum of the phenol compounds (0.5 g/L)

• No hydrocarbon compounds were detected at well MW3

• DRO were detected above the laboratory MDL in groundwater from wells MW4S (1,000 g/L)

and MW5 (1,810 g/L)

• Concentrations of GRO were reported at 1,276 g/L (MW4S) and 579 g/L (MW5)

• Ammonium concentrations exceeded the adopted assessment criteria at wells MW3, MW4S and

MW5

• Concentrations of chloride exceeded the IGV and Lower GTV in groundwater from all three wells,

with the result for well MW4S also exceeding the Upper GTV

• Sulphate, sodium and potassium were reported above the adopted assessment criteria at well

MW4S

• Since MNA monitoring commenced, an overall decreasing trend is observed in concentrations of

VOCs in all monitoring wells. The June 2019 total VOC concentrations in most wells are

amongst the lowest recorded in groundwater at the site to date

• Dissolved iron was detected above the assessment criteria in groundwater from wells MW4S,

MW9, MW10 and the Enva Production Well

• Dissolved manganese was detected above the assessment criteria in groundwater from all five

wells in the MNA programme

• Groundwater conditions beneath the site remain reducing and conducive to the continuing in-situ

reductive degradation of chlorinated organic solvents. Long term monitoring results indicate

significant reductions (greater than one order of magnitude) in solvent concentration in

groundwater in key well MW4S since peak detections in the period 2000-2002. Dissolved phase

chlorinated solvents in groundwater continue to be broken down through reductive dechlorination

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AECOM 10

5. Recommendations

The second quarterly groundwater monitoring round for 2019, conducted on 27 June 2019, indicates

continuing, gradual, declining long-term trends in the key VOC concentrations and continuing

moderate to strongly reducing groundwater conditions across the site with no apparent seasonality.

AECOM recommend that monitoring continues in 2019 in line with EPA requirements.

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Enva Ireland Limited Pr-394928_Acm_Rp_En_002_1_Enva Report Q2 2019 Final.Docx

AECOM

Appendix A - Figures

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AECOM

Appendix B - Tables

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Table 1: Sample Inventory - Enva Shannon, June 2019

pH EC Eh T DO VOCs SVOCsTotal

HydrocarbonsMajor Ions

Ammoniacal

Nitrogen

Total Organic

Carbon (TOC)

Total Oxidised

Nitrogen (TON)

Cyclohexane

Extractable

Matter (SEM)

MNA

Parameters

x x x x x x x x x x x x x

x x x x x x x x x x x x x x

x x x x x x x x x x x x x

x x x x x x x

x x x x x x x

x x x x x x x

x x x x x x x

Notes:

EC - Electrical Conductivity SVOCs - Semi Volatile Organic Compounds

Eh - Redox Potential Total Hydrocarbons - specifically Diesel and Petrol Range Organics

T - Temperature Major Ions - to include Chloride, Sulphate, Potassium and Sodium

DO - Dissolved Oxygen Monitored Natural Attenuation (MNA) Parameters - Dissolved Iron, Dissolved Manganese, Nitrate, Nitrite, Chloride, Sulphate and Alkalinity

VOCs - Volatile Organic Compounds

MW4S


Laboratory Parameters

Sampling Location

Field Parameters

MW3

MW5

MW8

MW9

MW10

AECOMPrepared by: RMG

Checked by: BMC

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Table 2: Water Level and Field Measurements - Enva Shannon, 27 June 2019

SWLWell

ElevationSWL

Total

DepthWell Volume

Minimum Purge

Volume

Actual Purge

VolumeEC Eh T DO

mbtoc mASD mASD m L L L mS/cm mV oC mg/L

MW1 -- 6.704 10.80 4.10 12.22 -- -- -- -- -- -- -- -- --

MW2 -- 5.880 11.05 5.17 8.50 -- -- -- -- -- -- -- -- --

MW3 27-Jun-19 4.762 10.72 5.96 12.24 15 44 35* 7.81 579 319 13.6 1.21 Clear water. NEC.

MW4S 27-Jun-19 5.938 11.05 5.11 10.35 9 26 26 7.17 2,504 186 12.4 2.27 Slightly cloudy grey water. NEC.

MW4D -- 6.241 10.99 4.75 26.55 -- -- -- -- -- -- -- -- --

MW5 27-Jun-19 6.212 10.57 4.36 12.40 12 36 36 7.80 757 117 14.5 2.43 Clear water. NEC.

MW6 -- 4.162 10.75 6.59 11.83 -- -- -- -- -- -- -- -- --

MW7 -- 4.777 10.13 5.35 15.00 -- -- -- -- -- -- -- -- --

MW8 27-Jun-19 5.031 10.00 4.97 15.97 21 64 65 8.03 796 183 13.4 0.78 Clear water. NEC.

MW9 27-Jun-19 5.216 9.97 4.75 23.69 145 435 300 7.59 1,153 115 12.4 1.47 Cloudy grey water. Slight sheen.

MW10 27-Jun-19 5.962 10.99 5.03 17.57 23 68 70 7.64 1,098 223 13.3 0.53Cloudy grey water with black suspended

solids.

MW11 -- 3.611 8.88 5.27 12.74 -- -- -- -- -- -- -- -- --

MW12 -- 4.010 8.72 4.71 12.72 -- -- -- -- -- -- -- -- --

MW13 -- 3.236 8.50 5.26 12.41 -- -- -- -- -- -- -- -- --

Enva Production Well 27-Jun-19 -- -- -- -- -- -- -- 7.91 631 163 14.1 2.22 Clear water. NEC.

Notes:

SWL - static water level EC - Electrical Conductivity mS/cm - micro Siemens per centimetre

mASD - metres above site datum mV - millivolts

mbtoc - metres below top of casing T - Temperature oC - degrees centigrade

-- Not Measured DO - Dissolved Oxygen mg/L - milligrams per litre

NEC - No Evidence of Contamination

* Well purged dry before three well volumes were purged - well sampled upon recovery and field readings taken from standing water

Sample LocationSampling

Date

Note redox potential readings compensated as recommended by instrument manufacturer

Eh - Redox Potential

ObservationspH


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Table 3: Volatile Organic Compound Results (mg/L) - Enva Shannon, June 2019

MW3 MW4S MW5 MW8 MW9 MW10Enva Production

Well

Dichlorodifluoromethane 2 nv nv - - - - - - -

Methyl Tertiary Butyl Ether 0.1 10 30 0.2 5.4 - 0.2 5.6 0.5 -

Chloromethane 3 nv nv - - - - - - -

Vinyl Chloride 0.1 0.375 nv 4 708.6 - 16.7 136.6 11.4 9

Bromomethane 1 nv nv - - - - - - -

Chloroethane 3 nv nv - 21 - - 47 - -

Trichlorofluoromethane 3 nv nv - - - - - - -

1,1-Dichloroethene 3 nv 30* 4 21 - - 9 4 16

Dichloromethane 5 15 10 - - - - - - -

trans-1-2-Dichloroethene 3 0.375 30* - 9 - - - - -

1,1-Dichloroethane 3 nv nv 20 293 - 4 146 61 27

cis-1-2-Dichloroethene 3 0.375 30* 6 2,777 - 131 265 11 403

2,2-Dichloropropane 1 nv nv - - - - - - -

Bromochloromethane 2 nv nv - - - - - - -

Chloroform 2 nv 12 - 14 - - 2 - -

1,1,1-Trichloroethane 2 nv 500 5 364 - - 11 88 13

1,1-Dichloropropene 3 nv nv - - - - - - -

Carbon tetrachloride 2 nv 2 - - - - - - -

1,2-Dichloroethane 2 2 3 - - - - - - -

Benzene 0.5 0.75 1 - 7.9 - 0.5 - - -

Trichloroethene 3 7.5 10, 70** - 23 - 58 34 - 578


Dibromomethane 3 nv nv - - - - - - -

Bromodichloromethane 2 75 nv - - - - - - -

cis-1-3-Dichloropropene 2 nv nv - - - - - - -

Toluene 5 525 10 - 11 - - - - -

trans-1-3-Dichloropropene 2 nv nv - - - - - - -

1,1,2-Trichloroethane 2 nv nv - - - - - - -

Tetrachloroethene 3 7.5 10, 40*** - 6 - 118 9 - 757


Dibromochloromethane 2 nv nv - - - - - - -

1,2-Dibromoethane 2 nv nv - - - - - - -

Chlorobenzene 2 nv 1 - - - - - - -

1,1,1,2-Tetrachloroethane 2 nv nv - - - - - - -

Ethylbenzene 1 nv 10 - 10 - - - - -

p/m-Xylene 2 nv 10**** - 4 - - - - -

o-Xylene 1 nv 10**** - 10 - - - - -

Styrene 2 nv nv - - - - - - -

Bromoform 2 nv nv - - - - - - -

Isopropylbenzene 3 nv nv - - - - - - -

1,1,2,2-Tetrachloroethane 4 nv nv - - - - - - -

Bromobenzene 2 nv nv - - - - - - -

1,2,3-Trichloropropane 3 nv nv - - - - - - -

Propylbenzene 3 nv nv - - - - - - -

2-Chlorotoluene 3 nv nv - - - - - - -

1,3,5-Trimethylbenzene 3 nv nv - - - - - - -

4-Chlorotoluene 3 nv nv - - - - - - -

tert-Butylbenzene 3 nv nv - - - - - - -

1,2,4-Trimethylbenzene 3 nv nv - - - - - - -

sec-Butylbenzene 3 nv nv - - - - - - -

4-Isopropyltoluene 3 nv nv - - - - - - -

1,3-Dichlorobenzene 3 nv nv - - - - - - -

1,4-Dichlorobenzene 3 nv nv - - - - - - -

n-Butylbenzene 3 nv nv - - - - - - -

1,2-Dichlorobenzene 3 nv 10 - - - - - - -

1,2-Dibromo-3-chloropropane 2 nv nv - - - - - - -

1,2,4-Trichlorobenzene 3 nv 0.4***** - - - - - - -

Hexachlorobutadiene 3 nv 0 - - - - - - -

Naphthalene 2 nv 1 - - - - - - -

1,2,3-Trichlorobenzene 3 nv 0.4***** - - - - - - -

Notes:

BOLD Exceeds GTV *Draft IGV is for the sum of dichloroethenes

Italics Exceeds Draft IGV **Two Draft IGVs are given for trichloroethene

MDL ***Two Draft IGVs are given for tetrachloroethene

- ****Draft IGV is for the sum of xylenes

nv No value *****Draft IGV is for the sum of trichlorobenzenes

Volatile Organic CompoundGroundwater Regs

2016MDL

EPA Draft Interim

Guideline Value

(IGV)

Less than the MDL

Method Detection Limit


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Table 4: Semi - Volatile Organic Compound Results (mg/L) - Enva Shannon, June 2019

MW3 MW4S MW5

Phenols

2-Chlorophenol 1.0 nv 200 - - -

2-Methylphenol 0.5 nv 0.5 1 - - -

2-Nitrophenol 0.5 nv 0.5 1 - - -

2,4-Dichlorophenol 0.5 nv 0.5 1 - 22.2 -

2,4-Dimethylphenol 1.0 nv 0.5 1 - - -

2,4,5-Trichlorophenol 0.5 nv 0.5 1 - - -

2,4,6-Trichlorophenol 1.0 nv 200 - - -

4-Chloro-3-methylphenol 0.5 nv 0.5 1 - - -

4-Methylphenol 1.0 nv 0.5 1 - 1.0 -

4-Nitrophenol 10.0 nv 0.5 1 - - -

Pentachlorophenol 1.0 nv 2 - - -

Phenol 1.0 nv 0.5 1 - - -

PAHs

2-Chloronaphthalene 1.0 nv nv - - -

2-Methylnaphthalene 1.0 nv nv - - -

Naphthalene 1.0 nv 1 - - -

Acenaphthylene 0.5 nv nv - - -

Acenaphthene 1.0 nv nv - - -

Fluorene 0.5 nv nv - - -

Phenanthrene 0.5 nv nv - - -

Anthracene 0.5 nv 10000 - - -

Fluoranthene 0.5 nv 1 - - -

Pyrene 0.5 nv nv - - -

Benz(a)anthracene 0.5 nv nv - - -

Chrysene 0.5 nv nv - - -

Benzo(bk)fluoranthene 1.0 0.075 A 0.5, 0.05**** - - -

Benzo(a)pyrene 1.0 0.0075 0.01 - - -

Indeno(123cd)pyrene 1.0 0.075 A 0.05 - - -

Dibenzo(ah)anthracene 0.5 nv nv - - -

Benzo(ghi)perylene 0.5 0.075 A 0.05 - - -

Phthalates

Bis(2-ethylhexyl) phthalate 5.0 nv 8 - - -

Butylbenzyl phthalate 1.0 nv 5 2 - - -

Di-n-butyl phthalate 1.5 nv 2 - - -

Di-n-Octyl phthalate 1.0 nv 5 2 - - -

Diethyl phthalate 1.0 nv 5 2 - - -

Dimethyl phthalate 1.0 nv 5 2 - - -

Other SVOCs

1,2-Dichlorobenzene 1.0 nv 10 - - -

1,2,4-Trichlorobenzene 1.0 nv 0.4 - - -

1,3-Dichlorobenzene 1.0 nv nv - - -

1,4-Dichlorobenzene 1.0 nv nv - - -

2-Nitroaniline 1.0 nv nv - - -

2,4-Dinitrotoluene 0.5 nv nv - - -

2,6-Dinitrotoluene 1.0 nv nv - - -


4-Bromophenylphenylether 1.0 nv nv - - -

4-Chloroaniline 1.0 nv nv - - -

4-Chlorophenylphenylether 1.0 nv nv - - -


Azobenzene 0.5 nv nv - - -

Bis(2-chloroethoxy)methane 0.5 nv nv - - -

Bis(2-chloroethyl)ether 1.0 nv nv - - -

Carbazole 0.5 nv nv - - -

Dibenzofuran 0.5 nv nv - - -

Hexachlorobenzene 1.0 nv 0.03 - - -

Hexachlorobutadiene 1.0 nv 0.1 - - -

Hexachlorocyclopentadiene 1.0 nv nv - - -

Hexachloroethane 1.0 nv nv - - -

Isophorone 0.5 nv nv - - -

N-nitrosodi-n-propylamine 0.5 nv nv - - -

Nitrobenzene 1.0 nv 10 - - -

Notes:

BOLD Exceeds GTV 1 - Draft IGV is for the sum of phenols

Italics Exceeds Draft IGV 2 - Draft IGV is for the sum of phthalates

MDL

-

nv No value A - PAH compounds specified in GTV

Less than the MDL

Monitoring Well

Semi Volatile Organic Compound MDLGroundwater Regs

2016

EPA Draft Interim

Guideline Value

(IGV)



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EPA Export 07-10-2019:04:00:56

Table 5: Hydrocarbons (mg/L) - Enva Shannon, June 2019

MW3 MW4S MW5

DRO/EPH

DRO/EPH (C8-C40) 10 nv 10 - 1,000 1,810

GRO

GRO (C4-C12) 100 nv 10 - 1,276 579

Total TPH (C4-C40) 100 7.5 10 - 2,276 2,389

Notes:

BOLD Exceeds Groundwater Regulations 2016

Italics Exceeds IGV (Interim Guideline Value)

MDL Method Detection Limit

- Less than the MDL

NA Not Analysed

nv no value

ug/l micrograms per litre

EPA Draft Interim

Guideline Value

(IGV)

Monitoring Well

CompoundGroundwater

Regs 2016MDL

AECOM

Prepared by: RMG

Checked by: BMC

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Table 6: Miscellaneous Parameters (mg/L) - Enva Shannon, June 2019

MW3 MW4S MW5

Ammoniacal Nitrogen (NH4) 0.03 0.065 - 0.175 0.150 0.22 12.98 0.09

Chloride 0.30 24 - 187.5 30 38 558 97

Sulphate 0.05 187.5 200 89 371 37

Sodium 0.10 nv 150 44 486 49

Potassium 0.10 nv 5 3.6 13.5 2.4

Total Oxidised Nitrogen as N 0.20 nv No abnormal change - - 0.3

Total Organic Carbon 2.00 nv No abnormal change - 39 -

Cyclohexane Extractable Matter 1.00 nv nv - 3 3

Notes:

BOLD Exceeds GTV

Italics Exceeds Draft IGV

MRL

-

nv No value

Less than the MDL

EPA Draft Interim

Guideline Value

(IGV)

Monitoring Well

CompoundGroundwater Regs

2016MDL


AECOM

Prepared by: RMG

Checked by: BMC

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Table 7: MNA Parameters (mg/L) - Enva Shannon, June 2019

MW4S MW8 MW9 MW10Enva Production

Well

Chloride 0.300 24 - 187.5 30 558 82 223 212 42

Sulphate 0.050 187.5 200 371 159 83 100 89

Iron 0.020 nv 0.20 9.86 0.08 4.97 2.51 2.01

Manganese 0.002 nv 0.05 3.08 1.76 1.23 2.29 0.21

Total Alkalinity as CaCO3 1.000 nv No Abnormal Change 480 308 372 328 334

Nitrate as NO3 0.200 37.5 25 - 0.5 - - -Nitrite as NO2 0.020 0.375 0.10 - - - - -

Notes:

BOLD Exceeds GTV

Italics Exceeds Draft IGV

MRL

-

nv No value

na Not analysed

Less than the MDL

CompoundGroundwater

Regs 2016MDL

EPA Draft Interim

Guideline Value

(IGV)


AECOM

Prepared by: RMG

Checked by: BMC

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EPA Export 07-10-2019:04:00:56




AECOM

Appendix C - Schedule of Analysis

Shannon Facility: The following table sets out the monitoring requirements of Waste Licence W0041-01 as detailed in Schedule F.3.

Parameter Quarterly Annually

Ammoniacal Nitrogen ✓

Total Organic Carbon ✓

Cyclohexane Extractable Matter ✓

Volatile Organic Compounds

(VOCs), including chlorinated

solvents

✓

Semi Volatile Organic Compounds

(VOCs)

✓

Total Petroleum Hydrocarbons

(TPH)- DRO and PRO banding

✓

Chloride ✓

Total Oxidised Nitrogen ✓

Sulphate ✓

Potassium ✓

Sodium ✓

Phosphate ✓

Total Alkalinity ✓

Calcium ✓

Cyanide ✓

Cadmium ✓

Chromium ✓

Copper ✓

Iron ✓

Lead ✓

Magnesium ✓

Manganese ✓

Mercury ✓

Nickel ✓

Arsenic ✓

Total Dissolved Solids (TDS)-

residue on evaporation

✓

Total Phenols ✓

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AECOM

Appendix D - Validated Laboratory Results

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EPA Export 07-10-2019:04:00:56

Element Materials Technology P: +44 (0) 1244 833780

Unit 3 Deeside Point F: +44 (0) 1244 833781

Zone 3

Deeside Industrial Park W: www.element.com

Deeside

CH5 2UA

AECOM

Attention :

Date :

Your reference :

Our reference :

Location :

Date samples received :

Status :

Issue :

Please include all sections of this report if it is reproduced


Carrigaline Road

Douglas

Cork

Ireland

Fergus O'Regan

4th July, 2019

60599654

Test Report 19/10460 Batch 1

Shannon

28th June, 2019

Final report

Senior Project Manager

1

Seven samples were received for analysis on 28th June, 2019 of which seven were scheduled for analysis. Please find attached our Test Report

which should be read with notes at the end of the report and should include all sections if reproduced. Interpretations and opinions are outside the

scope of any accreditation, and all results relate only to samples supplied.

All analysis is carried out on as received samples and reported on a dry weight basis unless stated otherwise. Results are not surrogate corrected.

Compiled By:

Paul Boden BSc

Element Materials Technology Environmental UK Limited

Registered in England and Wales

Registered Office: 10 Lower Grosvenor Place, London, SW1W 0EN

Company Registration No: 11371415 1 of 10

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EPA Export 07-10-2019:04:00:56

Client Name: Report : Liquid

Reference:

Location:

Contact: Liquids/products: V=40ml vial, G=glass bottle, P=plastic bottle

EMT Job No: 19/10460 H=H2SO4, Z=ZnAc, N=NaOH, HN=HN03

EMT Sample No. 1-8 9-16 17-24 25-28 29-32 33-36 37-40

Sample ID MW3 MW4S MW5 MW8 MW9 MW10 PRODUCTION

Depth

COC No / misc

Containers V H HN P G V H HN P G V H HN P G V HN P V HN P V HN P V HN P

Sample Date 27/06/2019 27/06/2019 27/06/2019 27/06/2019 27/06/2019 27/06/2019 27/06/2019

Sample Type Ground Water Ground Water Ground Water Ground Water Ground Water Ground Water Ground Water

Batch Number 1 1 1 1 1 1 1

Date of Receipt 28/06/2019 28/06/2019 28/06/2019 28/06/2019 28/06/2019 28/06/2019 28/06/2019

Total Dissolved Iron # - 9862 - 79 4971 2506 2008 <20 ug/l TM30/PM14

Dissolved Manganese # - 3082 - 1761 1234 2292 214 <2 ug/l TM30/PM14

Dissolved Potassium # 3.6 13.5 2.4 - - - - <0.1 mg/l TM30/PM14

Dissolved Sodium # 43.8 486.4AA 48.7 - - - - <0.1 mg/l TM30/PM14

GRO (>C4-C8) # <10 1215 <10 - - - - <10 ug/l TM36/PM12

GRO (>C8-C12) # <10 61 579 - - - - <10 ug/l TM36/PM12

GRO (>C4-C12) # <10 1276 579 - - - - <10 ug/l TM36/PM12

EPH (C8-C40) # <10 1000 1810 - - - - <10 ug/l TM5/PM30

Sulphate as SO4 # 89.4 371.3 37.2 158.9 83.0 100.0 88.6 <0.5 mg/l TM38/PM0

Chloride # 38.2 557.5 96.9 82.1 222.8 212.0 41.5 <0.3 mg/l TM38/PM0

Nitrate as NO3 # - <0.2 - 0.5 <0.2 <0.2 <0.2 <0.2 mg/l TM38/PM0

Nitrite as NO2 # - <0.02 - <0.02 <0.02 <0.02 <0.02 <0.02 mg/l TM38/PM0

Total Oxidised Nitrogen as N # <0.2 <0.2 0.3 - - - - <0.2 mg/l TM38/PM0

Ammoniacal Nitrogen as N # 0.17 10.10 0.07 - - - - <0.03 mg/l TM38/PM0

Total Alkalinity as CaCO3 # - 480 - 308 372 328 334 <1 mg/l TM75/PM0

SEM <1 3 3 - - - - <1 mg/l TM7/PM0

Total Organic Carbon # <2 39 <2 - - - - <2 mg/l TM60/PM0

Shannon

Fergus O'Regan

Please see attached notes for all

abbreviations and acronyms

LOD/LOR UnitsMethod

No.

Element Materials Technology

AECOM

60599654

QF-PM 3.1.2 v11Please include all sections of this report if it is reproduced

All solid results are expressed on a dry weight basis unless stated otherwise. 2 of 10

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EPA Export 07-10-2019:04:00:56

Client Name: SVOC Report : Liquid

Reference:

Location:

Contact:

EMT Job No: 19/10460

EMT Sample No. 1-8 9-16 17-24

Sample ID MW3 MW4S MW5

Depth

COC No / misc

Containers V H HN P G V H HN P G V H HN P G

Sample Date 27/06/2019 27/06/2019 27/06/2019

Sample Type Ground Water Ground Water Ground Water

Batch Number 1 1 1

Date of Receipt 28/06/2019 28/06/2019 28/06/2019

SVOC MS

Phenols

2-Chlorophenol # <1 <1 <1 <1 ug/l TM16/PM30

2-Methylphenol # <0.5 <0.5 <0.5 <0.5 ug/l TM16/PM30

2-Nitrophenol <0.5 <0.5 <0.5 <0.5 ug/l TM16/PM30

2,4-Dichlorophenol # <0.5 22.2 <0.5 <0.5 ug/l TM16/PM30

2,4-Dimethylphenol <1 <1 <1 <1 ug/l TM16/PM30

2,4,5-Trichlorophenol # <0.5 <0.5 <0.5 <0.5 ug/l TM16/PM30

2,4,6-Trichlorophenol <1 <1 <1 <1 ug/l TM16/PM30

4-Chloro-3-methylphenol # <0.5 <0.5 <0.5 <0.5 ug/l TM16/PM30

4-Methylphenol <1 1 <1 <1 ug/l TM16/PM30

4-Nitrophenol <10 <10 <10 <10 ug/l TM16/PM30

Pentachlorophenol <1 <1 <1 <1 ug/l TM16/PM30

Phenol <1 <1 <1 <1 ug/l TM16/PM30

PAHs

2-Chloronaphthalene # <1 <1 <1 <1 ug/l TM16/PM30

2-Methylnaphthalene # <1 <1 <1 <1 ug/l TM16/PM30

Naphthalene # <1 <1 <1 <1 ug/l TM16/PM30

Acenaphthylene # <0.5 <0.5 <0.5 <0.5 ug/l TM16/PM30

Acenaphthene # <1 <1 <1 <1 ug/l TM16/PM30

Fluorene # <0.5 <0.5 <0.5 <0.5 ug/l TM16/PM30

Phenanthrene # <0.5 <0.5 <0.5 <0.5 ug/l TM16/PM30

Anthracene # <0.5 <0.5 <0.5 <0.5 ug/l TM16/PM30

Fluoranthene # <0.5 <0.5 <0.5 <0.5 ug/l TM16/PM30

Pyrene # <0.5 <0.5 <0.5 <0.5 ug/l TM16/PM30

Benzo(a)anthracene # <0.5 <0.5 <0.5 <0.5 ug/l TM16/PM30

Chrysene # <0.5 <0.5 <0.5 <0.5 ug/l TM16/PM30

Benzo(bk)fluoranthene # <1 <1 <1 <1 ug/l TM16/PM30

Benzo(a)pyrene <1 <1 <1 <1 ug/l TM16/PM30

Indeno(123cd)pyrene <1 <1 <1 <1 ug/l TM16/PM30

Dibenzo(ah)anthracene # <0.5 <0.5 <0.5 <0.5 ug/l TM16/PM30

Benzo(ghi)perylene # <0.5 <0.5 <0.5 <0.5 ug/l TM16/PM30

Phthalates

Bis(2-ethylhexyl) phthalate <5 <5 <5 <5 ug/l TM16/PM30

Butylbenzyl phthalate <1 <1 <1 <1 ug/l TM16/PM30

Di-n-butyl phthalate # <1.5 <1.5 <1.5 <1.5 ug/l TM16/PM30

Di-n-Octyl phthalate <1 <1 <1 <1 ug/l TM16/PM30

Diethyl phthalate # <1 <1 <1 <1 ug/l TM16/PM30

Dimethyl phthalate <1 <1 <1 <1 ug/l TM16/PM30

Shannon

Fergus O'Regan



LOD/LOR UnitsMethod

No.


AECOM

60599654



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EPA Export 07-10-2019:04:00:56

Client Name: SVOC Report : Liquid

Reference:

Location:

Contact:


EMT Sample No. 1-8 9-16 17-24

Sample ID MW3 MW4S MW5

Depth

COC No / misc

Containers V H HN P G V H HN P G V H HN P G

Sample Date 27/06/2019 27/06/2019 27/06/2019

Sample Type Ground Water Ground Water Ground Water

Batch Number 1 1 1

Date of Receipt 28/06/2019 28/06/2019 28/06/2019

SVOC MS

Other SVOCs

1,2-Dichlorobenzene # <1 <1 <1 <1 ug/l TM16/PM30

1,2,4-Trichlorobenzene # <1 <1 <1 <1 ug/l TM16/PM30



2-Nitroaniline <1 <1 <1 <1 ug/l TM16/PM30

2,4-Dinitrotoluene # <0.5 <0.5 <0.5 <0.5 ug/l TM16/PM30

2,6-Dinitrotoluene <1 <1 <1 <1 ug/l TM16/PM30

3-Nitroaniline <1 <1 <1 <1 ug/l TM16/PM30

4-Bromophenylphenylether # <1 <1 <1 <1 ug/l TM16/PM30

4-Chloroaniline <1 <1 <1 <1 ug/l TM16/PM30

4-Chlorophenylphenylether # <1 <1 <1 <1 ug/l TM16/PM30

4-Nitroaniline <0.5 <0.5 <0.5 <0.5 ug/l TM16/PM30

Azobenzene # <0.5 <0.5 <0.5 <0.5 ug/l TM16/PM30

Bis(2-chloroethoxy)methane # <0.5 <0.5 <0.5 <0.5 ug/l TM16/PM30

Bis(2-chloroethyl)ether # <1 <1 <1 <1 ug/l TM16/PM30

Carbazole # <0.5 <0.5 <0.5 <0.5 ug/l TM16/PM30

Dibenzofuran # <0.5 <0.5 <0.5 <0.5 ug/l TM16/PM30

Hexachlorobenzene # <1 <1 <1 <1 ug/l TM16/PM30

Hexachlorobutadiene # <1 <1 <1 <1 ug/l TM16/PM30

Hexachlorocyclopentadiene <1 <1 <1 <1 ug/l TM16/PM30

Hexachloroethane # <1 <1 <1 <1 ug/l TM16/PM30

Isophorone # <0.5 <0.5 <0.5 <0.5 ug/l TM16/PM30

N-nitrosodi-n-propylamine # <0.5 <0.5 <0.5 <0.5 ug/l TM16/PM30

Nitrobenzene # <1 <1 <1 <1 ug/l TM16/PM30

Surrogate Recovery 2-Fluorobiphenyl 122 104 110 <0 % TM16/PM30

Surrogate Recovery p-Terphenyl-d14 119 118 115 <0 % TM16/PM30

LOD/LOR UnitsMethod

No.


AECOM

60599654

Shannon

Fergus O'Regan





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EPA Export 07-10-2019:04:00:56

Client Name: VOC Report : Liquid

Reference:

Location:

Contact:


EMT Sample No. 1-8 9-16 17-24 25-28 29-32 33-36 37-40

Sample ID MW3 MW4S MW5 MW8 MW9 MW10 PRODUCTION

Depth

COC No / misc

Containers V H HN P G V H HN P G V H HN P G V HN P V HN P V HN P V HN P

Sample Date 27/06/2019 27/06/2019 27/06/2019 27/06/2019 27/06/2019 27/06/2019 27/06/2019

Sample Type Ground Water Ground Water Ground Water Ground Water Ground Water Ground Water Ground Water

Batch Number 1 1 1 1 1 1 1

Date of Receipt 28/06/2019 28/06/2019 28/06/2019 28/06/2019 28/06/2019 28/06/2019 28/06/2019

VOC MS

Dichlorodifluoromethane <2 <2 <2 <2 <2 <2 <2 <2 ug/l TM15/PM10

Methyl Tertiary Butyl Ether # 0.2 5.4 <0.1 0.2 5.6 0.5 <0.1 <0.1 ug/l TM15/PM10

Chloromethane # <3 <3 <3 <3 <3 <3 <3 <3 ug/l TM15/PM10

Vinyl Chloride # 4.0 708.6 <0.1 16.7 136.6 11.4 9.0 <0.1 ug/l TM15/PM10

Bromomethane <1 <1 <1 <1 <1 <1 <1 <1 ug/l TM15/PM10

Chloroethane # <3 21 <3 <3 47 <3 <3 <3 ug/l TM15/PM10

Trichlorofluoromethane # <3 <3 <3 <3 <3 <3 <3 <3 ug/l TM15/PM10

1,1-Dichloroethene (1,1 DCE) # 4 21 <3 <3 9 4 16 <3 ug/l TM15/PM10

Dichloromethane (DCM) # <5 <5 <5 <5 <5 <5 <5 <5 ug/l TM15/PM10

trans-1-2-Dichloroethene # <3 9 <3 <3 <3 <3 <3 <3 ug/l TM15/PM10

1,1-Dichloroethane # 20 293 <3 4 146 61 27 <3 ug/l TM15/PM10

cis-1-2-Dichloroethene # 6 2777AB <3 131 265 11 403 <3 ug/l TM15/PM10

2,2-Dichloropropane <1 <1 <1 <1 <1 <1 <1 <1 ug/l TM15/PM10

Bromochloromethane # <2 <2 <2 <2 <2 <2 <2 <2 ug/l TM15/PM10

Chloroform # <2 14 <2 <2 2 <2 <2 <2 ug/l TM15/PM10

1,1,1-Trichloroethane # 5 364 <2 <2 11 88 13 <2 ug/l TM15/PM10

1,1-Dichloropropene # <3 <3 <3 <3 <3 <3 <3 <3 ug/l TM15/PM10

Carbon tetrachloride # <2 <2 <2 <2 <2 <2 <2 <2 ug/l TM15/PM10

1,2-Dichloroethane # <2 <2 <2 <2 <2 <2 <2 <2 ug/l TM15/PM10

Benzene # <0.5 7.9 <0.5 0.5 <0.5 <0.5 <0.5 <0.5 ug/l TM15/PM10

Trichloroethene (TCE) # <3 23 <3 58 34 <3 578 <3 ug/l TM15/PM10

1,2-Dichloropropane # <2 <2 <2 <2 <2 <2 <2 <2 ug/l TM15/PM10

Dibromomethane # <3 <3 <3 <3 <3 <3 <3 <3 ug/l TM15/PM10

Bromodichloromethane # <2 <2 <2 <2 <2 <2 <2 <2 ug/l TM15/PM10

cis-1-3-Dichloropropene <2 <2 <2 <2 <2 <2 <2 <2 ug/l TM15/PM10

Toluene # <5 11 <5 <5 <5 <5 <5 <5 ug/l TM15/PM10

trans-1-3-Dichloropropene <2 <2 <2 <2 <2 <2 <2 <2 ug/l TM15/PM10

1,1,2-Trichloroethane # <2 <2 <2 <2 <2 <2 <2 <2 ug/l TM15/PM10

Tetrachloroethene (PCE) # <3 6 <3 118 9 <3 757 <3 ug/l TM15/PM10

1,3-Dichloropropane # <2 <2 <2 <2 <2 <2 <2 <2 ug/l TM15/PM10

Dibromochloromethane # <2 <2 <2 <2 <2 <2 <2 <2 ug/l TM15/PM10

1,2-Dibromoethane # <2 <2 <2 <2 <2 <2 <2 <2 ug/l TM15/PM10

Chlorobenzene # <2 <2 <2 <2 <2 <2 <2 <2 ug/l TM15/PM10

1,1,1,2-Tetrachloroethane # <2 <2 <2 <2 <2 <2 <2 <2 ug/l TM15/PM10

Ethylbenzene # <1 10 <1 <1 <1 <1 <1 <1 ug/l TM15/PM10

m/p-Xylene # <2 4 <2 <2 <2 <2 <2 <2 ug/l TM15/PM10

o-Xylene # <1 10 <1 <1 <1 <1 <1 <1 ug/l TM15/PM10

Styrene <2 <2 <2 <2 <2 <2 <2 <2 ug/l TM15/PM10

Bromoform # <2 <2 <2 <2 <2 <2 <2 <2 ug/l TM15/PM10

Isopropylbenzene # <3 <3 <3 <3 <3 <3 <3 <3 ug/l TM15/PM10

1,1,2,2-Tetrachloroethane <4 <4 <4 <4 <4 <4 <4 <4 ug/l TM15/PM10

Bromobenzene # <2 <2 <2 <2 <2 <2 <2 <2 ug/l TM15/PM10

1,2,3-Trichloropropane # <3 <3 <3 <3 <3 <3 <3 <3 ug/l TM15/PM10

Propylbenzene # <3 <3 <3 <3 <3 <3 <3 <3 ug/l TM15/PM10

2-Chlorotoluene # <3 <3 <3 <3 <3 <3 <3 <3 ug/l TM15/PM10

1,3,5-Trimethylbenzene # <3 <3 <3 <3 <3 <3 <3 <3 ug/l TM15/PM10

4-Chlorotoluene # <3 <3 <3 <3 <3 <3 <3 <3 ug/l TM15/PM10

tert-Butylbenzene # <3 <3 <3 <3 <3 <3 <3 <3 ug/l TM15/PM10

1,2,4-Trimethylbenzene # <3 <3 <3 <3 <3 <3 <3 <3 ug/l TM15/PM10

sec-Butylbenzene # <3 <3 <3 <3 <3 <3 <3 <3 ug/l TM15/PM10

4-Isopropyltoluene # <3 <3 <3 <3 <3 <3 <3 <3 ug/l TM15/PM10

1,3-Dichlorobenzene # <3 <3 <3 <3 <3 <3 <3 <3 ug/l TM15/PM10


n-Butylbenzene # <3 <3 <3 <3 <3 <3 <3 <3 ug/l TM15/PM10


1,2-Dibromo-3-chloropropane <2 <2 <2 <2 <2 <2 <2 <2 ug/l TM15/PM10

1,2,4-Trichlorobenzene <3 <3 <3 <3 <3 <3 <3 <3 ug/l TM15/PM10

Hexachlorobutadiene <3 <3 <3 <3 <3 <3 <3 <3 ug/l TM15/PM10

Naphthalene <2 <2 <2 <2 <2 <2 <2 <2 ug/l TM15/PM10

1,2,3-Trichlorobenzene <3 <3 <3 <3 <3 <3 <3 <3 ug/l TM15/PM10

Surrogate Recovery Toluene D8 85 92 113 108 104 105 113 <0 % TM15/PM10

Surrogate Recovery 4-Bromofluorobenzene 84 90 93 96 96 97 96 <0 % TM15/PM10

Shannon

Fergus O'Regan



LOD/LOR UnitsMethod

No.


AECOM

60599654



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EPA Export 07-10-2019:04:00:56

Notification of Deviating Samples

EMT

Job

No.

Batch Depth

EMT

Sample

No.

Analysis Reason

Please note that only samples that are deviating are mentioned in this report. If no samples are listed it is because none were deviating.

Only analyses which are accredited are recorded as deviating if set criteria are not met.

Contact:

Sample ID

Client Name: AECOM

Reference:

Location:

No deviating sample report results for job 19/10460


60599654

Shannon

Fergus O'Regan

QF-PM 3.1.11 v3 Please include all sections of this report if it is reproduced 6 of 10

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EPA Export 07-10-2019:04:00:56

EMT Job No:

SOILS

DEVIATING SAMPLES

SURROGATES

DILUTIONS

BLANKS

NOTE

NOTES TO ACCOMPANY ALL SCHEDULES AND REPORTS

Please note we are only MCERTS accredited (UK soils only) for sand, loam and clay and any other matrix is outside our scope of accreditation.

Where Mineral Oil or Fats, Oils and Grease is quoted, this refers to Total Aliphatics C10-C40.

19/10460

WATERS

It is assumed that you have taken representative samples on site and require analysis on a representative subsample. Stones will generally be

included unless we are requested to remove them.

All analysis is reported on a dry weight basis unless stated otherwise. Results are not surrogate corrected. Samples are dried at 35°C ±5°C unless

otherwise stated. Moisture content for CEN Leachate tests are dried at 105°C ±5°C.

Surrogate compounds are added during the preparation process to monitor recovery of analytes. However low recovery in soils is often due to peat,

clay or other organic rich matrices. For waters this can be due to oxidants, surfactants, organic rich sediments or remediation fluids. Acceptable

limits for most organic methods are 70 - 130% and for VOCs are 50 - 150%. When surrogate recoveries are outside the performance criteria but

the associated AQC passes this is assumed to be due to matrix effect. Results are not surrogate corrected.

A dilution suffix indicates a dilution has been performed and the reported result takes this into account. No further calculation is required.

If you have not already done so, please send us a purchase order if this is required by your company.

The calculation of Pyrite content assumes that all oxidisable sulphides present in the sample are pyrite. This may not be the case. The calculation

may be an overesitimate when other sulphides such as Barite (Barium Sulphate) are present.

Where analytes have been found in the blank, the sample will be treated in accordance with our laboratory procedure for dealing with contaminated

blanks.

ISO17025 accreditation applies to surface water and groundwater and usually one other matrix which is analysis specific, any other liquids are

outside our scope of accreditation.

As surface waters require different sample preparation to groundwaters the laboratory must be informed of the water type when submitting samples.

Where appropriate please make sure that our detection limits are suitable for your needs, if they are not, please notify us immediately.

All samples should be submitted to the laboratory in suitable containers with sufficient ice packs to sustain an appropriate temperature for the

requested analysis. The temperature of sample receipt is recorded on the confirmation schedules in order that the client can make an informed

decision as to whether testing should still be undertaken.

Where Mineral Oil or Fats, Oils and Grease is quoted, this refers to Total Aliphatics C10-C40.

Please note we are not a UK Drinking Water Inspectorate (DWI) Approved Laboratory .

REPORTS FROM THE SOUTH AFRICA LABORATORY

Any method number not prefixed with SA has been undertaken in our UK laboratory unless reported as subcontracted.

Where an MCERTS report has been requested, you will be notified within 48 hours of any samples that have been identified as being outside our

MCERTS scope. As validation has been performed on clay, sand and loam, only samples that are predominantly these matrices, or combinations

of them will be within our MCERTS scope. If samples are not one of a combination of the above matrices they will not be marked as MCERTS

accredited.

Negative Neutralization Potential (NP) values are obtained when the volume of NaOH (0.1N) titrated (pH 8.3) is greater than the volume of HCl (1N)

to reduce the pH of the sample to 2.0 - 2.5. Any negative NP values are corrected to 0.

Where a CEN 10:1 ZERO Headspace VOC test has been carried out, a 10:1 ratio of water to wet (as received) soil has been used.

All samples will be discarded one month after the date of reporting, unless we are instructed to the contrary.

% Asbestos in Asbestos Containing Materials (ACMs) is determined by reference to HSG 264 The Survey Guide - Appendix 2 : ACMs in buildings

listed in order of ease of fibre release.

Data is only reported if the laboratory is confident that the data is a true reflection of the samples analysed. Data is only reported as accredited when

all the requirements of our Quality System have been met. In certain circumstances where all the requirements of the Quality System have not been

met, for instance if the associated AQC has failed, the reason is fully investigated and documented. The sample data is then evaluated alongside

the other quality control checks performed during analysis to determine its suitability. Following this evaluation, provided the sample results have not

been effected, the data is reported but accreditation is removed. It is a UKAS requirement for data not reported as accredited to be considered

indicative only, but this does not mean the data is not valid.

Where possible, and if requested, samples will be re-extracted and a revised report issued with accredited results. Please do not hesitate to contact

the laboratory if further details are required of the circumstances which have led to the removal of accreditation.



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EPA Export 07-10-2019:04:00:56

EMT Job No:

Measurement Uncertainty

#

SA

B

DR

M

NA

NAD

ND

NDP

SS

SV

W

+

++

*

AD

CO

LOD/LOR

ME

NFD

BS

LB

N

TB

OC

AA

AB

x5 Dilution

x10 Dilution

19/10460

Not applicable

ISO17025 (UKAS Ref No. 4225) accredited - UK.

Dilution required.

ISO17025 (SANAS Ref No.T0729) accredited - South Africa.

MCERTS accredited.

Measurement uncertainty defines the range of values that could reasonably be attributed to the measured quantity. This range of values has not

been included within the reported results. Uncertainty expressed as a percentage can be provided upon request.

Matrix Effect

No Asbestos Detected.

Limit of Detection (Limit of Reporting) in line with ISO 17025 and MCERTS

No Determination Possible

None Detected (usually refers to VOC and/SVOC TICs).

Samples are dried at 35°C ±5°C

Analysis subcontracted to an Element Materials Technology approved laboratory.

AQC failure, accreditation has been removed from this result, if appropriate, see 'Note' on previous page.

Calibrated against a single substance

Indicates analyte found in associated method blank.

ABBREVIATIONS and ACRONYMS USED

Outside Calibration Range

No Fibres Detected

Result outside calibration range, results should be considered as indicative only and are not accredited.

Results expressed on as received basis.

Surrogate recovery outside performance criteria. This may be due to a matrix effect.

AQC Sample

Suspected carry over

Trip Blank Sample

Blank Sample

Client Sample



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EPA Export 07-10-2019:04:00:56


Test Method No. Description

Prep Method

No. (if

appropriate)

Description

ISO

17025

(UKAS/S

ANAS)

MCERTS

(UK soils

only)

Analysis done

on As Received

(AR) or Dried

(AD)

Reported on

dry weight

basis

TM5

Modified 8015B method for the determination of solvent Extractable Petroleum

Hydrocarbons (EPH) within the range C8-C40 by GCFID. For waters the solvent extracts

dissolved phase plus a sheen if present.

PM30 Water samples are extracted with solvent using a magnetic stirrer to create a vortex. Yes

TM7Modified USEPA 3540 and 9071 for oily wastes. In house method for the gravimetric

determination of a sample following solvent extraction.PM0 No preparation is required.

TM15Modified USEPA 8260. Quantitative Determination of Volatile Organic Compounds

(VOCs) by Headspace GC-MS.PM10

Modified US EPA method 5021. Preparation of solid and liquid samples for GC

headspace analysis.

TM15Modified USEPA 8260. Quantitative Determination of Volatile Organic Compounds

(VOCs) by Headspace GC-MS.PM10

Modified US EPA method 5021. Preparation of solid and liquid samples for GC

headspace analysis. Yes

TM16Modified USEPA 8270. Quantitative determination of Semi-Volatile Organic compounds

(SVOCs) by GC-MS. PM30 Water samples are extracted with solvent using a magnetic stirrer to create a vortex.

TM16Modified USEPA 8270. Quantitative determination of Semi-Volatile Organic compounds

(SVOCs) by GC-MS. PM30 Water samples are extracted with solvent using a magnetic stirrer to create a vortex. Yes

TM30

Determination of Trace Metal elements by ICP-OES (Inductively Coupled Plasma -

Optical Emission Spectrometry). Modified US EPA Method 200.7, 6010B and BS EN ISO

11885 2009

PM14Analysis of waters and leachates for metals by ICP OES/ICP MS. Samples are filtered for

dissolved metals and acidified if required.Yes

TM36

Modified US EPA method 8015B. Determination of Gasoline Range Organics (GRO) in

the carbon chain range of C4-12 by headspace GC-FID. MTBE by GCFID co-elutes with

3-methylpentane if present and therefore can give a false positive. Positive MTBE results

can be confirmed using GCMS.

PM12Modified US EPA method 5021. Preparation of solid and liquid samples for GC

headspace analysis.Yes

TM38

Soluble Ion analysis using Discrete Analyser. Modified US EPA methods 325.2

(Chloride), 375.4 (Sulphate), 365.2 (o-Phosphate), 353.1 (TON), 354.1 (Nitrite), 350.1

(NH4+) comparable to BS ISO 15923-1, 7196A (Hex Cr)

PM0 No preparation is required. Yes

TM60

TC/TOC analysis of Waters by High Temperature Combustion followed by NDIR

detection. Based on the following modified standard methods: USEPA 9060, APHA

Standard Methods for Examination of Water and Wastewater 5310B, ASTM D 7573,

and USEPA 415.1.

PM0 No preparation is required. Yes

Element Materials Technology Method Code Appendix


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Test Method No. Description

Prep Method

No. (if

appropriate)

Description

ISO

17025

(UKAS/S

ANAS)

MCERTS

(UK soils

only)

Analysis done

on As Received

(AR) or Dried

(AD)

Reported on

dry weight

basis

TM75Modified US EPA method 310.1. Determination of Alkalinity by Metrohm automated

titration analyser.PM0 No preparation is required. Yes

Element Materials Technology Method Code Appendix


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AECOM

Appendix E - Monitored Natural Attenuation Monitoring - Volatile Organic Compound Data

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Appendix E1 - VOC Summary MW3, Enva Shannon, Groundwater Monitoring Data February 1998 to June 2019 (µg/L)

Volatile Organic

Compound (mg/L)

Groundwater

Regs 2016

EPA Draft Interim

Guideline Value

(IGV)

Feb-98 Aug-00 Jan-01 Aug-01 Nov-01 Apr-02 Apr-02 Jun-02 Sep-02 Jan-03 Apr-03 Jul-03 Sep-03 Jan-04 Apr-04 Jul-04 Jul-04 Oct-04 Nov-04 Feb-05 May-05 May-05 Jul-05 Oct-05 Feb-06 Mar-06 May-06 Aug-06 Nov-06

Vinyl Chloride 0.375 nv - - - - 4 9 <0.5 5 5 3 5 5 5 3 - <0.5 6 9 12.4 7 <0.5 6 - 13 - <0.5 - 17 16

1,1-Dichloroethene nv 30 - - - - - - 13 - - - - - - - - <0.5 - - 8.1 - 7.6 - - - - 14.5 15 27 -

cis-1,2-Dichloroethene 0.375 30 5 - 14 20 36 40 31 39 30 40 31 25 37 28 66 21.3 34 29 34 30 27.2 27 19 55 33 38.5 - 68 39

trans-1,2-Dichloroethene 0.375 nv 12 9 15 20 31 30 <0.5 25 21 - 28 18 23 16 24 <0.5 24 20 1.5 20 <0.5 15 - 19 13 1.7 - 24 11

Trichloroethene 7.5 10 - 5 5 7 11 12 9.6 11 14 14 18 13 15 11 12 8.5 14 10 6.8 11 8.2 11 - 30 12 14.1 9 12 11

Tetrachloroethene 7.5 10 n/a - - - - - 1.5 1 - - - - - - - <0.5 - - <0.5 - <0.5 - - - - 0.34 - - -

Chloroethane nv nv - - - - - - n/a - - - - - - - - n/a - - n/a - n/a - - - - n/a - - -

1,1-Dichloroethane nv nv 133 107 128 151 241 215 250 185 181 167 205 102 140 107 224 87.3 139 119 100 119 150 126 87 158 129 124 110 187 90

1,2-Dichloroethane nv nv - - - - - - <0.5 - - - - - - - - <0.5 - - <0.5 - <0.5 - - - - 0.185 - - -

1,1,1-Trichloroethane nv 500 81 65 105 192 253 195 77 171 87 172 121 79 105 61 77 26.3 49 48 28 45 53.1 62 31 63 66 43.9 48 77 34

Dichloromethane 15 10 149 - - - - - <0.5 - - - - - - - - n/a - - n/a - n/a - - 188 - <0.5 - - -

Chloroform nv nv - - - - - - <0.5 - - - - - - - - <0.5 - - n/a - 2.3 - - - - 0.138 - - -

Tetrachloromethane nv nv - - - - - - <0.5 - - - - - - - - <0.5 - - 0.8 - <0.5 - - - - <0.5 - - -

tert-butyl methyl ether nv 30 n/a n/a n/a - 4 4 n/a 6 7 - - - - - - n/a - - n/a - n/a - - - - n/a - - -

Toluene 525 10 - - - - - - <0.5 - - - - - - - - <0.5 - - n/a - <0.5 - - - - <0.5 - - -

Ethylbenzene nv 10 n/a - - - 4 - <0.5 - - - - - - - - <0.5 - - n/a - <0.5 - - - - <0.5 - - -

Isopropylbenzene nv nv - - - - - - <0.5 - - - - - - - - <0.5 - - n/a - <0.5 - - - - <0.5 - - -

Benzene 0.75 1 - - - - - - <0.5 - - - - - - - - <0.5 - - <0.7 - <0.5 - - - - <0.5 - - -

Total xylene nv 10 - - - - - - <0.5 - - - - - - - - <0.5 - - n/a - <0.5 - - - - <0.5 - - -

Total VOC Concentration 380 186 267 390 586 505 382 443 345 396 408 242 325 226 403 143 266 235 192 232 248 247 137 526 253 237 182 412 201

xx Indicates data from EPA sampling

xx Exceeds Groundwater Regulations 2016

xx Exceeds IGV (Interim Guideline Value)

MDL - method reporting limit

- result below MDL

2009 Data not available to AECOM

n/a - not analysed

Feb-98, Aug-00, Jan-01 and Apr-01 data from KT Cullen reports.

AECOM Ireland Limited Appendix E1 Contaminant Trends MW3 to June 2019.xls

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Volatile Organic

Compound (mg/L)

Groundwater

Regs 2016

EPA Draft Interim

Guideline Value

(IGV)

Vinyl Chloride 0.375 nv

1,1-Dichloroethene nv 30

cis-1,2-Dichloroethene 0.375 30

trans-1,2-Dichloroethene 0.375 nv

Trichloroethene 7.5 10

Tetrachloroethene 7.5 10

Chloroethane nv nv

1,1-Dichloroethane nv nv


1,1,1-Trichloroethane nv 500

Dichloromethane 15 10

Chloroform nv nv

Tetrachloromethane nv nv

tert-butyl methyl ether nv 30

Toluene 525 10

Ethylbenzene nv 10

Isopropylbenzene nv nv

Benzene 0.75 1

Total xylene nv 10

Total VOC Concentration





- result below MDL


n/a - not analysed


Mar-07 Mar-07 Jun-07 Sep-07 Dec-07 Dec-07 Apr-08 Apr-08 Jun-08 Aug-08 Nov-08 Feb-10 May-10 Aug-10 Nov-10 Feb-11 May-11 Aug-11 Nov-11 Feb-12 May-12 Aug-12 Nov-12 Mar-13 Jun-13 Sep-13 Dec-13

n/a 12 8 8 12 16 22.3 25 26.7 17.5 10.2 4 - 6 - 11 7 - 4 61 7 3 - 3 7 13 6

12.4 - 15 - 13.2 11 13.6 23 14 29 11.2 17 30 20 21 11 8 10 8 9 10 6 8 8 7 - -

32.61 47 42 25 22.5 26 n/a 105 43 62.9 48.9 37 59 59 63 41 70 30 23 71 46 35 43 42 66 6 4

0.88 18 - 9 0.8 - 1.4 1.4 3.1 - - - - - - - - - - - - - - - - - -

20.66 13 10 8 9.9 9 21.9 27 17 25.3 32.8 12 21 27 30 22 7 8 10 22 19 17 24 15 6 - -

0.34 - - - <0.5 - 1 1.7 1.7 2.4 9.5 20 18 13 18 15 9 - 8 10 10 - 12 9 8 - -

n/a - - - n/a - n/a - 1.4 - - - - - - - - - - - - - - - - 19 22

n/a 126 134 74 63.2 102 102.4 126 105 134 65.6 69 93 94 91 56 38 50 41 41 49 30 39 38 36 76 31

0.185 - - - <0.5 - <0.5 - - - - - - - - - - - - - - - - - - - -

45.1 81 58 68 290.3 178 148.5 209 199 215 54.7 187 - 208 216 77 58 53 301 391 273 201 157 74 53 - -

0.12 - - - <0.5 - <0.5 - - - - - - - - - - - - - - - - - - - 496

0.138 - - - <0.5 - 1.5 1.4 - 2 - - - - - - - - - - 2 - - - - - -

6.906 - - - <0.5 - <0.5 - - - - n/a n/a n/a n/a n/a n/a n/a n/a - - - - - - - -

n/a - - - <0.5 - <0.5 - - - 2 - - - - - 1 - - - - - - - - - 2

<0.1 - - - <0.5 - <0.5 - - - - - - - - - - 4 - - - - - - - - -

<0.1 - - - <0.5 - <0.5 - - - - - - - - - - - - - - - - - 5 - 7

<0.1 - - - <0.5 - <0.5 - - - - - - - - - - - - - - - - - - - -

<0.5 - - - <0.5 - <0.5 - - - - - - - - - - - - - - - - 2 - - -

0.6 - - - 0.6 - <0.5 - - - - - - - - - - - - - - - - - 21 - 32

119 297 267 192 412 342 313 520 411 488 235 346 221 427 439 233 198 155 395 605 416 292 283 191 209 114 600


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Volatile Organic

Compound (mg/L)

Groundwater

Regs 2016

EPA Draft Interim

Guideline Value

(IGV)







Chloroethane nv nv





Chloroform nv nv

Tetrachloromethane nv nv

tert-butyl methyl ether nv 30

Toluene 525 10

Ethylbenzene nv 10


Benzene 0.75 1

Total xylene nv 10






- result below MDL


n/a - not analysed


Mar-14 Jun-14 Sep-14 Dec-14 Mar-15 Jun-15 Sep-15 Dec-15 Mar-16 Jun-16 Sep-16 Dec-16 Mar-17 Jun-17 Sep-17 Dec-17 Mar-18 Jun-18 Sep-18 Dec-18 Mar-19 Jun-19

2.2 2.4 11 4 6 9 4 8 11 11 6.0 4.1 1.5 4.1 3.9 4.0 3.9 3.7 4.3 3.1 3.3 4.0

<3 9 - 23 5 4 4 7 13 14 5.0 - - - - - 4.0 5.0 - - - 4.0

- - - - - - - - 8 12 5 - - 3 4 4 4 5 4 4 5 6

- - - - - 7 11 - 3 3 - - - - - - - - - - - -

- - - - - 3 5 - - 4 - - - - - - - - - - - -

- - - - - - - - - - - - - - - - - - - - - -

19 - 24 7 - - - - - - - - - - - - - - - - - -

6 - 15 - 45 41 59 66 83 77 33 18 15 23 25 31 31 31 21 15 21 20

- - - - - - - - - - - - - - - - - - - - - -

4 4 - - - - 35 53 129 102 7 6 - - - 9 14 13 - - - 5

- - - - - - - - - - - - - - - - - - - - - -

- - - - - - - - - - - - - - - - - - - - - -

- - - - - - - - - - - - - - - - - -

- 0.5 - - - - - - 0.2 - 0.3 0.2 0.2 0.3 0.4 0.3 0.2 0.2 0.7 0.3 - 0.2

- - - - - - - - - - - - - - - - - - - - - -

- - - - - - - - - - - - - - - - - - - - - -

- - - - - - - - - - - - - - - - - - - - - -

- - - - - - - - - - - - - - - - - - - - - -

- - - - - - - - - - - - - - - - - - - - - -

31 16 50 34 56 64 118 134 247 223 56 28 17 30 33 48 57 58 30 22 29 39


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Appendix E1: Enva Shannon, Groundwater Monitoring Data February 1998 to June 2019


0

100

200

300

400

500

600

700

Nov-9

7

Ma

y-9

8

Nov-9

8

Jun

-99

Dec-9

9

Jun

-00

Dec-0

0

Jun

-01

Dec-0

1

Jun

-02

Jan

-03

Jul-0

3

Jan

-04

Jul-0

4

Jan

-05

Jul-0

5

Fe

b-0

6

Au

g-0

6

Fe

b-0

7

Au

g-0

7

Fe

b-0

8

Au

g-0

8

Ma

r-09

Se

p-0

9

Ma

r-10

Se

p-1

0

Ma

r-11

Se

p-1

1

Ap

r-12

Oct-

12

Ap

r-13

Oct-

13

Ap

r-14

Oct-

14

Ma

y-1

5

Nov-1

5

Ma

y-1

6

Nov-1

6

Ma

y-1

7

Nov-1

7

Ma

y-1

8

Dec-1

8

Jun

-19

Dec-1

9

Co

ncen

trati

on

(m

g/L

)Total VOC Concentration - MW3

(Maximum Total VOC Concentration = 605 ug/L in February 2012)

Enva Data

EPA Data

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Appendix E2 - VOC Summary MW4S, Enva Shannon, Groundwater Monitoring Data February 1998 to June 2019 (µg/L)

Volatile Organic Compound

(mg/L)

Groundwater Regs

2016

EPA Draft Interim

Guideline Value

(IGV)

Feb-98 Aug-00 Jan-01 Apr-01 Aug-01 Nov-01 Apr-02 Apr-02 Jun-02 Sep-02 Jan-03 Apr-03 Jul-03 Sep-03 Jan-04 Apr-04 Jul-04 Jul-04 Oct-04

Vinyl Chloride 0.375 nv 136 2113 768 1061 1477 994 - 1072 918 772 756 648 660 698 553 407 - 654 556

1,1-Dichloroethene nv 30 - 37 16 n/a 54 31 120 48 41 - 34 30 25 29 24 15 - 24 19

cis-1,2-Dichloroethene 0.375 30 5235 32712 9580 16363 24450 19517 >20,000 15520 17466 22995 16634 17878 12492 14514 13133 9182 304 14736 10426

trans-1,2-Dichloroethene 0.375 nv - 198 75 n/a 283 223 55 234 308 270 - 248 272 324 293 213 - - 209

Trichloroethene 7.5 10 31 108 73 n/a 165 280 120 134 121 158 222 89 100 97 132 83 - 76 62

Tetrachloroethene 7.5 10 n/a 84 41 n/a 141 57 160 213 310 294 123 199 197 184 142 74 - 57 43

Chloroethane nv nv - 313 62 n/a - - n/a - 18 - 12 - - - 6 - n/a - -

1,1-Dichloroethane nv nv 543 2946 935 1691 2484 2484 5200 2180 2593 2572 2342 2023 1628 2019 1710 1010 316.8 1766 1347

1,2-Dichloroethane nv nv - - - - - - - - - - - - - - - - - - -

1,1,1-Trichloroethane nv 500 2413 7395 2596 4331 8902 11744 9900 10155 12461 11708 10280 9832 8094 9716 9183 5944 4950 8363 6518

1,1,2-Trichloroethane nv nv - - - n/a - - - - 4 - - - - - - - - - -

Dichloromethane 15 10 1181 2627 1046 2209 4672 5438 4700 4570 4416 4334 3310 2110 1652 1430 1114 302 - 332 -

Chloroform nv nv 105 - 44 n/a 144 149 130 110 141 142 122 111 84 106 91 62 - 87 69

Dichlorodifluoromethane nv nv - - 10 n/a 50 84 n/a 89 - - - - - - - - n/a - -

Trichlorofluoromethane nv nv 4 120 52 n/a 88 43 65 38 47 - 28 30 25 23 17 11 - 17 13

Methyl Tertiary Butyl Ether 10 30 n/a n/a n/a n/a 106 125 n/a 67 98 69 - - 46 - - - n/a - -

Benzene 0.75 1 - 24 9 n/a 27 29 16.4 22 26 24 27 22 22 29 29 19 - 31 27

Toluene 525 10 14 52 21 n/a 56 175 60 86 102 93 112 103 131 218 271 250 - 424 492

Ethylbenzene nv 10 n/a 7 3 n/a 6 17 8.9 12 14 9 11 9 15 16 14 11 - 13 13

p/m-Xylene nv 10 n/a 10 5 n/a 10 32 19.1 27 29 18 26 17 40 38 34 29 - 31 61

o-Xylene nv 10 n/a 3 2 n/a 4 12 9 9 12 8 13 11 19 18 19 15 - 16 17

Chlorobenzene nv nv n/a - - n/a - 2 - 2 2 - 1 2 2 - - - - - -

Isopropylbenzene nv nv n/a - - n/a - - - - - - - - 1 - - - - - -

1,2,4-Trimethylbenzene nv nv n/a - - n/a - - 1.7 - - - - - - - - - - - -

1,3,5-Trimethylbenzene nv nv n/a - - n/a - - 0.6 - - - - - - - - - - - -

1,2-Dichlorobenzene nv nv n/a - - n/a - - - - - - - - - - - - - - -

Total VOC Concentration 9,662 48,749 15,338 25,655 43,119 41,436 40,566 34,588 39,127 43,466 34,053 33,362 25,505 29,459 26,765 17,627 5,571 26,627 19,872




MRL - method reporting limit

- result below MDL


na - not analysed ++

Result outside calibration range, results should be considered as indicative only and are not accredited


AECOM Ireland Limited Appendix E2 Contaminant Trends MW4S to June 2019.xls

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(mg/L)

Groundwater Regs

2016

EPA Draft Interim

Guideline Value

(IGV)







Chloroethane nv nv




1,1,2-Trichloroethane nv nv


Chloroform nv nv

Dichlorodifluoromethane nv nv

Trichlorofluoromethane nv nv

Methyl Tertiary Butyl Ether 10 30

Benzene 0.75 1

Toluene 525 10

Ethylbenzene nv 10

p/m-Xylene nv 10

o-Xylene nv 10

Chlorobenzene nv nv


1,2,4-Trimethylbenzene nv nv


1,2-Dichlorobenzene nv nv






- result below MDL





Feb-05 May-05 May-05 Jul-05 Oct-05 Feb-06 Mar-06 Jun-06 Aug-06 Nov-06 Mar-07 Mar-07 Jun-07 Sep-07 Dec-07 Dec-07 Apr-08 Apr-08 Jun-08 Aug-08

350 - 585 340 876 929 37.4 518 416 850 n/a 734 261 227 298 472 437.6 496 535 346

14 140 17 22 18 - 32.8 14 18 17 - 12 14 8 76.2 99 149.1 96 162 127

7604 1300 10574 11596 11445 9468 491.7 11093 12041 9386 0.227 6888 8512 4970 5730 5720 n/a 5700 8160 4500

197 - 197 155 225 183 1.5 15 163 198 - - 114 80 16.1 - 16.5 - 361 -

41 42.3 41 22 25 - 5.1 20 26 21 0.963 29 23 13 21.6 90 137.7 - 90.6 44.6

38 19.4 23 20 17 - 0.8 10 14 15 0.134 - 14 11 18 - 19.9 - <40 20.2

- n/a - - - - n/a - - - n/a - - - n/a - n/a - <40 -

1000 2400 1305 1353 1456 1405 84.7 1240 1300 1131 n/a 793 1026 576 696.5 735 898.7 759 949 640

- - - - - - 1.7 - - - - - - - 5.9 - 5.2 - <40 -

4926 5000 6450 5198 5858 5497 271.4 3592 3749 3904 6.005 2281 2640 2154 3345.3 2850 3218.9 2650 4190 2440

- - - - - - - - - - - - - - 1.2 - 1 - <40 -

111 510 - 20 - - - - - - - - - - 0.7 - 2.1 - <40 -

49 92.8 67 77 72 - 3.6 69 66 51 1.4 34 49 41 84.5 81 165.1 - 129 92.4

- n/a - 39 - - - - 264 - n/a - - - 65.7 - 171.8 - <40 -

9 - 12 5 12 2357 2.9 4 8 7 n/a 4 - 2 5.2 - 4 - <40 -

- n/a 22 22 - - n/a - 42 - n/a - - - n/a - n/a - <40 -

23 28.2 29 29 41 48 1.4 59 37 48 n/a 33 28 19 24.1 - 43.5 - <40 24.2

276 660 199 167 273 734 6.7 170 156 177 - 180 67 19 34.5 161 133 - 56 76.8

14 - 11 8 12 - - 20 7 20 - - 2 6 n/a - 24.6 - <40 22.9

37 - 25 - 28 - - 47 18 55 - 28 10 7 5.8 - 18 - <40 -

20 - 13 - 13 - 1.8 22 11 28 - 17 9 9 18.4 - 24.4 - <40 21.3

- - - - - - - - - - - - - - 1.1 - 1.3 - <40 -

- - - - - - 1 - - - - - - - 0.7 - - - <40 -

- - - - - - - - - - - - - - 0.9 - - - <40 -

- - - - - - - - - - - - - - 0.5 - - - <40 -

- - - - - - - - - - - - - - 1 - - - <40 -

14,709 10,193 19,570 19,073 20,371 20,621 945 16,893 18,336 15,908 9 11,033 12,769 8,142 10,450 10,208 5,472 9,701 14,633 8,355


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(mg/L)

Groundwater Regs

2016

EPA Draft Interim

Guideline Value

(IGV)







Chloroethane nv nv






Chloroform nv nv




Benzene 0.75 1

Toluene 525 10

Ethylbenzene nv 10

p/m-Xylene nv 10

o-Xylene nv 10

Chlorobenzene nv nv










- result below MDL





Nov-08 Feb-10 May-10 Aug-10 Nov-10 Feb-11 May-11 Aug-11 Nov-11 Feb-12 May-12 Aug-12 Nov-12 Mar-13 Jun-13 Sep-13 Dec-13 Mar-14 Jun-14 Sep-14 Dec-14

669 502 1461 278 424 - 324 530 619 2198 908 298 1177 389 658 811 722 406 594 930 356

85 80 96 61 38 - 18 42 67 74 113 37 53 43 43 42 60 30 - 70 20

5010 4830 7218 4777 2638 - 1401 2384 4015 4094 6189 2441 3846 2689 2631 3255 3879 3694 3356 2365 1057

361 9 13 8 - - 4 7 9 4 16 7 8 6 6 7 8 6 7 13 5

29.5 26 59 21 7 - 5 24 39 49 48 30 12 13 6 10 19 17 13 6 -

- 11 14 7 - - 4 - 10 11 43 - 9 7 6 9 9 6 6 - 4

- 4 - 7 - - - - - - - - - - - - - - - - -

564 533 589 417 245 - 160 361 504 - - - - 395 293 395 393 203 315 419 175

- - - - - - - - - 461 681 316 412 - - - - - - - -

2050 1623 1463 1055 757 - 337 634 1900 2027 2328 932 1274 739 884 884 1339 791 994 1022 -

- - - - - - - - - - - - - - - - - - - - -

- 9 - - - - - - - - - - - - - - - - - - -

82.5 95 78 58 31 - 18 40 99 96 108 49 80 50 40 51 - 29 37 35 17

- 178 - - - - - - - - - - - - - 115 190 - - - -

- 19 23 17 14 - 4 7 6 7 19 - 5 4 - 4 4 - - 10 -

27.1 - 60 28 11 - 7 13 14 10 13 5 5 5 6 5 6 5.2 6 11 3

23.7 17 16 12 10 - 3 9 17 14 18 10 12 13 10 12 13 7 10 11 6

125 118 98 71 74 - 8 9 14 41 43 23 14 32 10 11 16 17.9 14.6 8 22

20.4 21 20 6 12 - - - 21 20 17 16 21 17 16 6 11 13.6 19 19 -

- 39 17 8 14 - - - 15 12 12 6 15 6 3 3 4 3 3 2 11

- 22 24 11 17 - - - 27 23 22 15 27 17 20 5 10 15 17 17 7.4

- - - - - - - - - - - - - - - - - - - - -

- - - - - - - - - - - - - - - - - - - - -

- - - - - - - - - - - - - - - - - - - - -

- - - - - - - - - - - - - - - - - - - - -

- - - - - - - - - - - - - - - - - - - - -

9,047 8,136 11,249 6,842 4,292 0 2,293 4,060 7,376 9,141 10,578 4,185 6,970 4,425 4,632 5,625 6,683 5,244 5,392 4,937 1,684


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(mg/L)

Groundwater Regs

2016

EPA Draft Interim

Guideline Value

(IGV)







Chloroethane nv nv






Chloroform nv nv




Benzene 0.75 1

Toluene 525 10

Ethylbenzene nv 10

p/m-Xylene nv 10

o-Xylene nv 10

Chlorobenzene nv nv










- result below MDL





Mar-15 Jun-15 Sep-15 Dec-15 Mar-16 Jun-16 Sep-16 Dec-16 Mar-17 Jun-17 Sep-17 Dec-17 Mar-18 Jun-18 Sep-18 Dec-18 Mar-19 Jun-19

412 201 93 101 78 116 274 311 220 271 183 200 451 715 726 716 846 709

- 12 4 3 - 5 10 6 9 11 - 5 8 17 16 21 24 21

917 989 496 246 167 337 954 899 1,214 1,011 183 350 882 1,737 1,492 2,329 3,351 2,777

6 13 - - - 3 5 - 4 4 5 6 8 10 9 12 13 9

- - - - - - 7 8 - 4 5 - - - - - 15 23

6 4 - - - - 4 4 3 6 - - 5 7 5 - 8 6

- - - - - - - - - - - - - 22 - - 47 21

168 103 64 71 53 68 151 121 177 138 292 328 259 305 362 323 374 293

- - - - - - - - - - - - - - - - - -

- 237 136 156 93 145 266 330 361 - 86 81 161 243 116 220 304 364

- - - - - - - - - - - - - - - - - -

- 4 - - - - - - - - - - - - - - - -

13 8 4 4 2 2 8 8 12 7 6 6 9 11 9 11 16 14

- - - 9 - - - - - - - - - - - - - -

4 3 - - - - - - - - - - - - - - - -

- - - - 1 2 7 3 3 - 4 5 4 7 7 7 4 5

5 3 2 3 1.5 2 5 4 5 4 6 8 6 7 6 9 10 8

13 7 3 3 - - - - - 9 17 18 21 24 17 24 23 11

10 6 - 5 2 - 5 2 2 4 6 10 10 12 7 15 15 10

2 - - - - - - - - 3 5 10 10 12 6 11 9 4

10 4 - 3 1 - 5 3 3 3 4 10 8 12 7 15 12 10

- - - - - - - - - - - - - - - - - -

- - - - - - - - - - - - - - - - - -

- - - - - - - - - - - - - - - - - -

- - - - - - - - - - - - - - - - - -

- - - - - - - - - - - - - - - - - -

1,566 1,594 802 604 399 680 1,701 1,698 2,013 1,699 801 1,036 1,842 3,140 2,784 3,713 5,071 4,285


For

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ectio

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pose

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EPA Export 07-10-2019:04:00:57



0

5,000

10,000

15,000

20,000

25,000

30,000

35,000

40,000

45,000

50,000

Nov-9

7

Ma

y-9

8

Nov-9

8

Jun

-99

Dec-9

9

Jun

-00

Dec-0

0

Jun

-01

Dec-0

1

Jun

-02

Jan

-03

Jul-0

3

Jan

-04

Jul-0

4

Jan

-05

Jul-0

5

Fe

b-0

6

Au

g-0

6

Fe

b-0

7

Au

g-0

7

Fe

b-0

8

Au

g-0

8

Ma

r-09

Se

p-0

9

Ma

r-10

Se

p-1

0

Ma

r-11

Se

p-1

1

Ap

r-12

Oct-

12

Ap

r-13

Oct-

13

Ap

r-14

Oct-

14

Ma

y-1

5

Nov-1

5

Ma

y-1

6

Nov-1

6

Ma

y-1

7

Nov-1

7

Ma

y-1

8

Dec-1

8

Jun

-19

Co

ncen

trati

on

(m

g/L

)

Total VOC Concentration - MW4S(Maximum Total VOC Concentration = 48,749 ug/L in August 2000)

Enva Data

EPA Data

Nov 2011 result is possibly erroneous

For

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ectio

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pose

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EPA Export 07-10-2019:04:00:57



(mg/L)

MDL

(mg/L)

Groundwater Regs

2016

EPA Draft Interim

Guideline Value

(IGV)

Feb-98 Aug-00 Jan-01 Aug-01 Nov-01 Apr-02 Apr-02 Jun-02 Sep-02 Jan-03 Apr-03 Jul-03 Sep-03

Vinyl Chloride 0.1 0.375 nv - - - - - n/a - - - - - - -

cis-1,2-Dichloroethene 1 nv 30 16 - - - - n/a - 2 - - - - -

Trichloroethene 1 7.5 10 - - 1 - - n/a 3 2 2 3 - - -

Tetrachloroethene 1 7.5 10 n/a - - - - n/a - 1 - - - - -

1,1-Dichloroethane 1 nv nv - 2 - 1 - n/a 6 4 5 6 - - -

1,1,1-Trichloroethane 1 nv 500 42 46 54 25 10 n/a 37 26 43 25 39 6 9

Chloromethane 1 nv nv - - - - - n/a - - - - - - -

Dichloromethane 1 nv 10 148 - - - - n/a - - - - - - -

Chloroform 1 nv nv - 4 5 5 3 n/a 8 4 7 6 - - -

Benzene 0.5 0.75 1 - - - - - n/a - - - - - - -

Toluene 0.5 nv 10 - - - - - n/a - - - - - - -

Trichlorofluoromethane 1 nv nv - - 6 - - n/a - - - - - - -

o-Xylene 0.5 nv 10 - - - - - n/a - - - - - - -

p/m-Xylene 0.5 nv 10 - - - - - n/a - - - - - - -

Napthalene 2 nv 1 - - - - - n/a - - - - - - -

4-Iospropyltoluene 3 nv nv - - - - - n/a - - - - - - -

1,2,4 Trimethylbenzene - nv nv - - - - - n/a - - - - - - -

1,3,5 Trimethylbenzene 3 nv nv - - 6 - - n/a - - - - - - -

Total VOC Concentration 206 52 72 31 13 0 54 39 57 40 39 6 9





- result below MDL

n/a - not analysed



AECOM Ireland Limited Appendix E3 Contaminant Trends MW5 to 2019.xls

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EPA Export 07-10-2019:04:00:57



(mg/L)

MDL

(mg/L)

Groundwater Regs

2016

EPA Draft Interim

Guideline Value

(IGV)

Vinyl Chloride 0.1 0.375 nv

cis-1,2-Dichloroethene 1 nv 30

Trichloroethene 1 7.5 10

Tetrachloroethene 1 7.5 10

1,1-Dichloroethane 1 nv nv

1,1,1-Trichloroethane 1 nv 500

Chloromethane 1 nv nv

Dichloromethane 1 nv 10

Chloroform 1 nv nv

Benzene 0.5 0.75 1

Toluene 0.5 nv 10

Trichlorofluoromethane 1 nv nv

o-Xylene 0.5 nv 10

p/m-Xylene 0.5 nv 10

Napthalene 2 nv 1

4-Iospropyltoluene 3 nv nv

1,2,4 Trimethylbenzene - nv nv

1,3,5 Trimethylbenzene 3 nv nv






- result below MDL

n/a - not analysed



Jan-04 Apr-04 Jul-04 Jul-04 Oct-04 Nov-04 Feb-05 May-05 May-05 Jul-05 Oct-05 Feb-06 Mar-06 May-06 Aug-06 Nov-06

- - - - - - - - - - - - - - - -

- - - - - 12 - - - - - - - - - -

- - 3 - - 2 - - - - - - - - - -

- - - - - - - - - - - - - - - -

- - 9 - - 5 - - - - - - 2 - - 3

4 8 67 12 - 16 - 3 - - - - 3 4 5 4

- - - - - - - - - - - - - - - -

- - - - - - - - - - - - - - - -

- - 7 2 - 3 - - - - - - 1 - - -

- - - - - - - - - - - - - - - -

- - - - - - - - - - - - - - - -

- - - 17 - - - - - - - - - - 5 -

- - - - - - - - - - - - - - - -

- - - - - - - - - - - - - - - -

- - - - - - - - - - - - - - - -

- - - - - - - - - - - - - - - -

- - - - - - - - - - - - - - - -

- - - 17 - - - - - - - - - - 5 -

4 8 86 48 0 38 0 3 0 0 0 0 6 4 15 7


For

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ectio

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pose

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.

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EPA Export 07-10-2019:04:00:57



(mg/L)

MDL

(mg/L)

Groundwater Regs

2016

EPA Draft Interim

Guideline Value

(IGV)









Chloroform 1 nv nv

Benzene 0.5 0.75 1

Toluene 0.5 nv 10


o-Xylene 0.5 nv 10


Napthalene 2 nv 1









- result below MDL

n/a - not analysed



Mar-07 Mar-07 Jun-07 Sep-07 Dec-07 Dec-07 Apr-08 Apr-08 Jun-08 Aug-08 Nov-08 Feb-10 May-10 Aug-10 Nov-10

- - - - - - - - - - - - - - -

- - - - - - 12 - - - 1 - - - -

- - - - 1 1 2 - - 2 2 - - - -

- - - - - - - - - - - - - - -

- 4 - - 1 1 - - - 1 2 - - - -

- 6 2 - 4 5 7 4 3 4 5 - - 7 -

- - - - - - - - - - - - - - -

- - - - - - - - - - - - - - -

- - - - - 2 4 2 - 3 3 - - - -

- - - - - - - - - - - - - - -

- - - - - - - - - - - - - - -

- - - - - - - - - - - - - - -

- - - - - - - - - - - - - - -

- - - - - - - - - - - - - - -

- - - - - - - - - - - - - - -

- - - - - - - - - - - - - - -

- - - - - - - - - - - - - - -

- - - - - - - - - - - - - - -

0 10 2 0 5 9 25 6 3 9 12 0 0 7 0


For

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ectio

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pose

s only

.

Conse

nt of

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EPA Export 07-10-2019:04:00:57



(mg/L)

MDL

(mg/L)

Groundwater Regs

2016

EPA Draft Interim

Guideline Value

(IGV)









Chloroform 1 nv nv

Benzene 0.5 0.75 1

Toluene 0.5 nv 10


o-Xylene 0.5 nv 10


Napthalene 2 nv 1









- result below MDL

n/a - not analysed



Feb-11 May-11 Aug-11 Nov-11 Feb-12 May-12 Aug-12 Nov-12 Mar-13 Jun-13 Sep-13 Dec-13 Mar-14 Jun-14 Sep-14 Dec-14

- - - - - - - - - - - - - - - -

- - - - - - - - - - - - - - - -

- - - - - - - - - - - - - - - -

- - - - - - - - - - - - - - - -

- - - - - - - - - - - - - - - -

- 3 - 3 - 3 - - - - - - - - - -

- - - - - - - - - - - - - - - -

- - - - - - - - - - - - - - - -

- - - 20 10 - 21 - - - - - - - - 2

- - - - - - - - - - - - - - - -

- - - - - - - - - - - - - - - -

- - - - - - - - - - - - - - - -

- - - - - - - - - - - - 1 36 65 4

- - - - - - - - - - - - - - - -

- - - - - - - - - - - - - 20 58 10

- - - - - - - - - - - - - - - -

- - - - - - - - - - - - - - - -

- - - - - - - - - - - - - 38 81 15

0 3 0 23 10 3 21 0 0 0 0 0 1 94 204 31


For

insp

ectio

n pur

pose

s only

.

Conse

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EPA Export 07-10-2019:04:00:57



(mg/L)

MDL

(mg/L)

Groundwater Regs

2016

EPA Draft Interim

Guideline Value

(IGV)









Chloroform 1 nv nv

Benzene 0.5 0.75 1

Toluene 0.5 nv 10


o-Xylene 0.5 nv 10


Napthalene 2 nv 1









- result below MDL

n/a - not analysed



Mar-15 Jun-15 Sep-15 Dec-15 Mar-16 Jun-16 Sep-16 Dec-16 Mar-17 Jun-17 Sep-17 Dec-17 Mar-18 Jun-18 Sep-18 Dec-18 Mar-19 Jun-19

- - - - - - - - 0.2 - - - 0.2 - - - - -

- - - - - - - - - - - - - - - - - -

- - - - - - - - - - - - - - - - - -

- - - - - - - - - - - - - - - - - -

- - - - - - - - - - - - - - - - - -

- - - - 3 - - - - - - 3 2 - - - 2 -

- - - - - - - - - - - - - - - - - -

- - - - - - - - - - - - - - - - - -

- - - - - - - - - - - - - - - - - -

1 - - - - - - - - - - - - - - - - -

- - - - - - - - - - - - - - - - - -

- - - - - - - - - - - - - - - - - -

4 - - - - - - - - - - - - - - - - -

5 - - - - - - - - - - - - - - - - -

10 7 - - - - - - - - - - - - - - - -

4 - - - - - - - - - - - - - - - - -

37 - - - 7 - - - - - - - - - - - - -

30 17 6 - - - - - - - - - - - - - - -

92 24 6 0 10 0 0 0 0.2 0 0 3 2.2 0 0 0 2 0


For

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ectio

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.

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EPA Export 07-10-2019:04:00:57

Appendix E3: Enva Shannon, Groundwater Monitoring Data February 1998 to June

2019


0

50

100

150

200

250

Nov-9

7

Ma

y-9

8

Nov-9

8

Jun

-99

Dec-9

9

Jun

-00

Dec-0

0

Jun

-01

Dec-0

1

Jun

-02

Jan

-03

Jul-0

3

Jan

-04

Jul-0

4

Jan

-05

Jul-0

5

Fe

b-0

6

Au

g-0

6

Fe

b-0

7

Au

g-0

7

Fe

b-0

8

Au

g-0

8

Ma

r-09

Se

p-0

9

Ma

r-10

Se

p-1

0

Ma

r-11

Se

p-1

1

Ap

r-12

Oct-

12

Ap

r-13

Oct-

13

Ap

r-14

Oct-

14

Ma

y-1

5

Nov-1

5

Ma

y-1

6

Nov-1

6

Ma

y-1

7

Nov-1

7

Ma

y-1

8

Dec-1

8

Jun

-19

Co

nc

en

trati

on

(m

g/L

)

Total VOC Concentration - MW5(Maximum Total VOC Concentration = 206 ug/L in Febraury 1998)

Enva Data

EPA Data

For

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ectio

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EPA Export 07-10-2019:04:00:57

Appendix E4 - VOC Summary MW8, Enva Shannon, Groundwater Monitoring Data February 1998 to June 2019

Volatile Organic

Compound (mg/L)

MDL

(mg/L)

Groundwater

Regs 2016

EPA Draft Interim

Guideline Value

(IGV)

Aug-01 Sep-02 Jan-03 Apr-03 Sep-03 Jan-04 Apr-04 Oct-04 Feb-05 May-05 Oct-05 Feb-06 May-06 Nov-06

Vinyl Chloride 1 0.375 nv 83 258 259 322 225 258 268 290 375 175 217 164 104 252

1,1-Dichloroethene 1 nv 30 5 - - - - 8 7 6 7 - 4 - 6 -

cis-1,2-Dichloroethene 1 0.375 30 1491 4873 5013 4008 3715 4639 4377 3116 2940 1598 2129 1592 1484 2353

trans-1,2-Dichloroethene 1 0.375 nv 13 - - 17 15 17 14 11 14 - - - 5 10

Trichloroethene 1 7.5 10 1024 1405 1218 1487 1128 1218 264 478 491 401 422 364 302 582

Tetrachloroethene 1 7.5 10 1953 1752 1288 1494 1198 1024 523 604 577 586 525 520 455 588

Chloroethane 1 nv nv - - - - - - - - - - - - 42 -

1,1-Dichloroethane 1 nv nv 21 73 79 97 66 79 51 53 43 29 33 30 28 40

1,1,1-Trichloroethane 1 nv 500 26 22 23 36 27 28 21 17 15 7 8 - 6 11

Chloroform 1 nv 12 3 187 126 212 120 118 77 54 29 18 15 20 23 20

tert-butyl methyl ether 1 10 30 - - - - - - 5 - - - - - 6 -

Benzene 1 0.75 1 3 4 5 5 4 4 3 3 3 - - - 2 2

Toluene 1 525 10 2 - - 2 - 2 2 - - - - - - -

1,2-Dichlorobenzene 1 nv nv - - - - - - 3 - - - - - - -

Total VOC Concentration 4,624 8,574 8,011 7,680 6,498 7,395 5,615 4,632 4,494 2,814 3,353 2,690 2,463 3,858





- result below MDL

na - not analysed


AECOM Appendix E4 Contaminant Trends MW8 to 2019.xls

For

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EPA Export 07-10-2019:04:00:57


Volatile Organic

Compound (mg/L)

MDL

(mg/L)

Groundwater

Regs 2016

EPA Draft Interim

Guideline Value

(IGV)

Vinyl Chloride 1 0.375 nv

1,1-Dichloroethene 1 nv 30

cis-1,2-Dichloroethene 1 0.375 30

trans-1,2-Dichloroethene 1 0.375 nv



Chloroethane 1 nv nv



Chloroform 1 nv 12

tert-butyl methyl ether 1 10 30

Benzene 1 0.75 1

Toluene 1 525 10

1,2-Dichlorobenzene 1 nv nv






- result below MDL

na - not analysed


Mar-07 Jun-07 Dec-07 May-10 May-11 May-12 Jun-13 Jun-14 Jun-15 Jun-16 Jun-17 Jun-18 Jun-19

171 247 267 16 72 26 26 22 20 6 8 10 17

5 10 - - - - - - - - - - -

2002 3942 1940 147 639 154 192 139 136 44 58 92 131

- 13 29 - - - - - - - - - -

643 1588 923 59 127 53 50 59 41 19 29 27 58

661 543 860 253 230 174 155 185 56 66 88 120 118

- - - - - - - - - - - - -

35 56 41 - 7 5 4 4 4 - - 3 4

17 14 25 - - - - - - - - - -

17 16 24 - - - - - - - - - -

- - - - - - - - - - - - 0.2

- 3 - - - - 0.6 - - - - - 0.5

- - - - - - - - - - - - -

- - - - - - - - - - - - -

3,551 6,432 4,109 475 1,075 412 428 409 257 135 183 252 328


For

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EPA Export 07-10-2019:04:00:57



0

2,000

4,000

6,000

8,000

10,000

Ma

r-01

Oct-

01

Ap

r-02

Oct-

02

Ma

y-0

3

Nov-0

3

Ma

y-0

4

Nov-0

4

Jun

-05

Dec-0

5

Jun

-06

Dec-0

6

Jul-0

7

Jan

-08

Jul-0

8

Fe

b-0

9

Au

g-0

9

Fe

b-1

0

Au

g-1

0

Ma

r-11

Se

p-1

1

Ma

r-12

Se

p-1

2

Ap

r-13

Oct-

13

Ap

r-14

Nov-1

4

Ma

y-1

5

Nov-1

5

Ma

y-1

6

Dec-1

6

Jun

-17

Dec-1

7

Jul-1

8

Jan

-19

Jul-1

9

Co

ncen

trati

on

(m

g/L

)

Total VOC Concentration - MW8 (Maximum Total VOC Concentration = 8,574 ug/L in September 2002)

For

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ectio

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.

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EPA Export 07-10-2019:04:00:57


Volatile Organic

Compound (mg/L)

MDL

(mg/L)

Groundwater Regs

2016

EPA Draft Interim

Guideline Value

(IGV)


Vinyl Chloride 1 0.375 nv 10 22 20 30 19 13 10 6 9 12 17 - 24 50

1,1-Dichloroethene 1 nv 30 - - - - - - - - - - - - 46 -


trans-1,2-Dichloroethene 1 0.375 nv 2 5 - 7 7 4 - - - - 8 - 41 33

Trichloroethene 1 7.5 10 54 41 12 12 14 7 9 7 9 8 8 - 6 13

Tetrachloroethene 1 7.5 10 12 2 22 5 10 3 3 2 8 - 4 - - 7

Chloroethane 1 nv nv - 185 21 - - 7 - - - 14 20 - 48 46


1,1,1-Trichloroethane 1 nv 500 102 196 185 389 368 70 51 35 43 259 936 3210 4401 1896

Dichloromethane 1 15 10 - - - - - - - - - - - - - -

Chloroform 1 nv 12 26 70 13 22 - 3 5 3 3 - 3 - 5 7

Trichlorofluoromethane 1 nv nv - 1 - - - - - - - - - - 741 -

Carbon disulphide 1 nv nv - 64 - - - - - - - - - - - -

Methyl Tertiary Butyl Ether 2 10 30 - - - - - - - - - - - - - -

Benzene 1 0.75 1 - - - - - - - - - - - - 2 -

Toluene 1 525 10 3 2 - - - - - - - - - - - -

p/m-Xylene 1 nv 10 - 2 - - - - - - - - - - - -

o-Xylene 1 nv 10 - 3 - - - - - - - - - - - -

Total VOC Concentration 356 1,073 481 706 645 227 252 128 181 485 1,297 3,958 6,010 2,708





- result below MDL






For

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ectio

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.

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EPA Export 07-10-2019:04:00:57


Volatile Organic

Compound (mg/L)

MDL

(mg/L)

Groundwater Regs

2016

EPA Draft Interim

Guideline Value

(IGV)










Dichloromethane 1 15 10

Chloroform 1 nv 12


Carbon disulphide 1 nv nv

Methyl Tertiary Butyl Ether 2 10 30

Benzene 1 0.75 1

Toluene 1 525 10

p/m-Xylene 1 nv 10

o-Xylene 1 nv 10






- result below MDL






18 25 58 88 128 58 150 113 128 144 174 71 137

- - 76 48 43 20 17 280 9 12 - 5 9

128 302 374 442 545 290 308 233 377 402 242 389 265

13 61 - - - - - - - - - - -

8 10 - 31 32 17 13 18 28 37 15 41 34

- 2 - 13 13 7 - - 7 17 5 19 9

14 53 97 93 - 69 81 60 41 49 60 12 47

243 804 789 623 740 372 364 280 136 172 185 63 146

972 5746 4830 - 1717++ 85 122 25 - - - - 11

- 88 59 - - - - - 8 - - - -

- 7 - 12 - 5 - - 3 3 - - 2

- - - - - - - - - - - - -

- - - na na na - - - - - - na

- - - 12 15 10 11 6 4 7 4 3 6

- - - - - - 0.5 - - - - - -

2 - - - - - - - - - - - -

- - - - - - - - - - - - -

- - - - - - - - - - - - -

1,398 7,098 6,283 1,362 1,516 933 1,067 1,015 741 843 685 604 665


For

insp

ectio

n pur

pose

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.

Conse

nt of

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EPA Export 07-10-2019:04:00:57



0

2,000

4,000

6,000

8,000

10,000

Ma

r-01

Oct-

01

Ap

r-02

Nov-0

2

Ma

y-0

3

Dec-0

3

Jun

-04

Jan

-05

Jul-0

5

Fe

b-0

6

Au

g-0

6

Ma

r-07

Se

p-0

7

Ap

r-08

Oct-

08

Ma

y-0

9

Nov-0

9

Ma

y-1

0

Dec-1

0

Jun

-11

Jan

-12

Jul-1

2

Fe

b-1

3

Au

g-1

3

Ma

r-14

Se

p-1

4

Ap

r-15

Oct-

15

Ma

y-1

6

Nov-1

6

Jun

-17

Dec-1

7

Jul-1

8

Jan

-19

Au

g-1

9

Co

ncen

trati

on

(m

g/L

)

Total VOC Concentration - MW9 (Maximum Total VOC Concentration = 7,098 ug/L in June 2007)

For

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Volatile Organic

Compound (mg/L)

MDL

(mg/L)

Groundwater Regs

2010

EPA Draft Interim

Guideline Value

(IGV)


Vinyl Chloride 1 0.375 nv 18 64 57 57 55 51 27 31 36 31 57 43 35 38

1,1-Dichloroethene 1 nv 30 - - - - - - - - - - - - 61 -


trans-1,2-Dichloroethene 1 0.375 nv 39 104 - 95 98 82 67 47 61 51 61 58 69 53

Trichloroethene 1 7.5 10 - 4 - - - - - - - - 4 - - -

Tetrachloroethene 1 7.5 10 - 6 - - - - - - - - - - - -

Chloroethane 1 nv nv - 8 - - - 3 - - 2 - - - 13 -

1,1-Dichloroethane 1 nv nv 123 341 283 384 326 269 181 178 158 - 278 259 234 276


Chloroform 1 nv 12 - 1 - - - - - - - - - - - -

Dichlorodifluoromethane 1 nv nv 13 - - - - - - - - - - - - -

Trichlorofluoromethane 1 nv nv - - - - - - - - - 37 - 51 30 -

tert-butyl methyl ether 1 10 30 4 6 - - - - - - - - - - - -

Benzene 1 0.75 1 - - - - - - - - - - - - 1 -

Toluene 1 525 10 - - - - - - - - - 2 - - - 2






- result below MRL

na - not analysed




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Volatile Organic

Compound (mg/L)

MDL

(mg/L)

Groundwater Regs

2010

EPA Draft Interim

Guideline Value

(IGV)










Chloroform 1 nv 12

Dichlorodifluoromethane 1 nv nv


tert-butyl methyl ether 1 10 30

Benzene 1 0.75 1

Toluene 1 525 10






- result below MRL

na - not analysed




45 45 64 20 13 18 18 9 9 10 13 12 11

- 92 81 28 14 9 8 4 4 7 - 4 4

202 278 164 76 47 43 57 20 19 25 21 9 11

49 92 - - - * - - - - - - -

- - - - - - - - - - - - -

- 2 - - - - - - - - - - -

- - - - - - - - - - - 6 -

233 414 354 83 67 38 38 20 23 37 65 112 61

3004 6519 5550 890 585 172 192 71 - 47 132 101 88

- - - - - - - - - - - - -

- - - - - - - - - - - - -

- - - - - - - - - - - - -

- - - - - 2 - - - - - 0.4 0.5

- 2 - - - - - - - - - - -

- - - - - - - - - - - - -

3,533 7,444 6,213 1,097 726 282 313 124 55 126 231 244 176


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0

2,000

4,000

6,000

8,000

10,000

Ma

r-01

Oct-

01

Ap

r-02

Oct-

02

Ap

r-03

Oct-

03

Ap

r-04

Nov-0

4

Ma

y-0

5

Nov-0

5

Ma

y-0

6

Nov-0

6

Ma

y-0

7

Dec-0

7

Jun

-08

Dec-0

8

Jun

-09

Dec-0

9

Jun

-10

Dec-1

0

Jul-1

1

Jan

-12

Jul-1

2

Jan

-13

Jul-1

3

Jan

-14

Au

g-1

4

Fe

b-1

5

Au

g-1

5

Fe

b-1

6

Au

g-1

6

Fe

b-1

7

Se

p-1

7

Ma

r-18

Se

p-1

8

Ma

r-19

Se

p-1

9

Co

ncen

trati

on

(m

g/L

)

Total VOC Concentration - MW10(Maximum Total VOC Concentration = 9,406 ug/L in September 2002)

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Appendix E7 - VOC Summary Production Well, Enva Shannon, Groundwater Monitoring Data February 1998 to June 2019

Volatile Organic

Compound (mg/L)

MDL

(mg/L)

Groundwater Regs

2016

EPA Draft Interim

Guideline Value

(IGV)


Vinyl Chloride 0.1 0.375 nv 10 20 16 17 20 18 12 26 19 27 21 - 17 25

1,1-Dichloroethene 3 nv 30 - - - - - 1 2 - - - - - 33 -


trans-1,2-Dichloroethene 3 0.375 nv 31 38 - 32 37 38 31 24 42 23 29 24 - 38

Trichloroethene 3 7.5 10 607 856 719 806 846 799 458 513 798 584 729 628 646 543

Tetrachloroethene 3 7.5 10 1206 1365 1065 1147 1258 1172 1059 650 1111 732 960 1062 1167 871



Dichloromethane 3 15 10 - - - - - - - - - - 275 - - -

Methyl Tertiary Butyl Ether 0.1 10 30 - - - - - - - - - - - - - -

Chlorethane 3 nv nv - - - - - - - - - - - - - -

Chloroform 2 75 12 - 1 - - - - - - - - - - - -






- result below MDL

n/a - not analysed



AECOM Appendix E7 Contaminant Trends Production Well to 2019.xls

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Appendix E7 - VOC Summary Production Well, Enva Shannon, Groundwater Monitoring Data February 1998 to June 2019

Volatile Organic

Compound (mg/L)

MDL

(mg/L)

Groundwater Regs

2016

EPA Draft Interim

Guideline Value

(IGV)









Dichloromethane 3 15 10

Methyl Tertiary Butyl Ether 0.1 10 30

Chlorethane 3 nv nv

Chloroform 2 75 12






- result below MDL

n/a - not analysed




16 16 21 15 14 20 14 12 5 6 126 8 9

- - 24 32 22 7 15 - 8 14 - 7 16

513 523 467 593 500 113 535 9 270 417 320 327 403

31 27 27 - - - - - - - - - -

571 630 630 431 477 80 97 6 165 307 32 27 578

955 965 900 1054 1186 173 217 7 158 633 10 12 757

53 51 42 50 - 10 39 - 22 31 109 29 27

32 - 32 - 31 - 7 - - - 7 - 13

- - - - - - - - - - - - -

- - - - - - - - - - 2.3 - -

- - - - - - - - - - 32 - -

- - - - - - - - - - - - -

2,171 2,212 2,143 2,175 2,230 403 924 34 628 1,408 638 410 1,803


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0

1,000

2,000

3,000

4,000

Jul-0

0

Jan

-01

Jul-0

1

Jan

-02

Jul-0

2

Jan

-03

Jul-0

3

Jan

-04

Jul-0

4

Jan

-05

Jul-0

5

Jan

-06

Jul-0

6

Jan

-07

Jul-0

7

Jan

-08

Jul-0

8

Jan

-09

Jul-0

9

Jan

-10

Jul-1

0

Jan

-11

Jul-1

1

Jan

-12

Jul-1

2

Jan

-13

Jul-1

3

Jan

-14

Jul-1

4

Jan

-15

Jul-1

5

Jan

-16

Jul-1

6

Jan

-17

Jul-1

7

Jan

-18

Jul-1

8

Jan

-19

Jul-1

9

Co

ncen

trati

on

(m

g/L

)

Total VOC Concentration - Production Well (Maximum Total VOC Concentration = 3,042 ug/L in October 2005)

For

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DRAFT

Project reference: PR-394928-ACM-RP-EN-002


AECOM

AECOM Ireland Limited


Carrigaline Road

Douglas

Cork

T: 021 436 5006

aecom.com

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Documents

Enva Ireland Limited Shannon · 2019. 10. 7. · Enva Ireland Limited - Shannon Project Reference: PR-394928-ACM-RP-EN-002 Enva Ireland Limited PR-394928_ACM_RP_EN_002_1_Enva Report