1.0 introduction and background · 2019-07-28 · 1.0 introduction and background this letter...

Golder Associates Ireland Limited

Town Centre House, Dublin Road, Naas, Co. Kildare, Ireland

T: +353 45 81 0200

Registered in Ireland Registration No. 297875

Town Centre House, Dublin Road, Naas, Co. Kildare, Ireland

Directors: S. Copping, A. Harris (British), DRV Jones

VAT No.: 8297875W golder.com

21 May 2019 Project No. 18113929.L02.B0

Mary Dwane

Vistakon Ireland

Johnson & Johnson Limited

National Technology Park

Castletroy

Limerick

GROUNDWATER MONITORING OF TOTAL SUSPENDED SOLIDS IN GW10

Dear Mary

1.0 INTRODUCTION AND BACKGROUND

This letter report details the sampling of Total Suspended Solids (TSS) in groundwater monitoring well GW10,

which is located at the Vistakon Johnson & Johnson plant located at the National Technological Park, Castletroy,

Limerick City (the “Site”).

The Vistakon facility is currently undergoing expansion. As part of this facility expansion a new building has

been planned over the location of a monitoring well GW2. Vistakon informed the EPA of their intention to

decommission monitoring well GW2 and replace it with a suitable downgradient alternative outside the new

building footprint in correspondence dated 20 March 2018. GW10 was installed as a replacement monitoring

well for GW2, (Location identified in Attachment 1 as ‘GW2-NEW’). GW10 was installed on 08 January 2019

by Fogarty Drilling under the direction of John Sisk & Son (Holdings) Ltd. (Sisk).

Vistakon requested that Golder complete concurrent sampling of well GW2 and GW10 prior to final

decommissioning of GW2. Groundwater monitoring was undertaken by a Golder Scientist on 11 February 2019,

to assess the groundwater quality in the two wells as requested by Vistakon. This monitoring was reported to

Vistakon in a letter report (Document reference: P18113929.L01.B0). An elevated concentration of total

suspended solids (TSS) (241 mg/L) was identified in the groundwater sample from GW10. The monitoring

results were submitted to the EPA as part of the IE licence groundwater monitoring programme. The EPA has

requested that follow up monitoring for TSS was completed at monitoring well GW10.

In response to this request by the EPA, Vistakon directed Golder to conduct subsequent TSS monitoring at

GW10 on their behalf to satisfy the Agency’s request. Golder mobilised to site on 10 May 2019 to complete this

sampling. The scope of works and results are described below.

2.0 SCOPE OF WORKS

Golder completed to following scope of works to collect a groundwater sample from GW10:

Well purging (by submersible whale pump) to remove stagnant water from the well to ensure that the

groundwater sample was representative of the aquifer prior to dispatch to the laboratory for analysis;

Mary Dwane Project No. 18113929.L02.B0

21 May 2019

2

Measurement of unstable water quality parameters in the field (pH, temperature, electrical conductivity

dissolved oxygen and redox) using a calibrated field meter;

Collection of the groundwater sample for laboratory analysis. Sample collected directly into laboratory

supplied containers by experienced field staff to ensure sample integrity;

Completion of appropriate Chain of Custody (COC) documentation for sample traceability purposes and

dispatch of the sample to the laboratory by overnight courier; and

Reporting of results of analysis and findings of the site visit.

2.1 GROUNDWATER LEVELS

Groundwater levels recorded are presented in Table 1. Depths from the Top of Casing (TOC) to water level

were measured from the top of the piezometer in all wells.

Table 1: Groundwater Monitoring Well Water Levels and Depths

Monitoring Well ID Groundwater Level Well Bottom

mBTOC mBTOC

GW10 3.14 18.56

2.2 Groundwater Sampling

Prior to sampling GW10 was purged using the submersible whale pump for a period of 1 hour to ensure

representative groundwater samples were collected, and residual silt from the well’s installation were extracted

as far as possible. The additional purging period was completed as it was evident form the colour of the purge

waters that well development completed during the installation of GW10 may not have been sufficient to remove

fines from the well.

Field parameters were measured during purging and sampling of well GW10 (Table 2) using a field calibrated

smarTROLL multi-parameter meter.

The groundwater sample was collected in laboratory supplied containers and stored in a cooler box with ice

packs. The laboratory Chain of Custody (COC) was completed and samples were couriered to Exova Jones

Environmental Laboratories in the United Kingdom, for testing. Exova Jones Environmental Laboratories are

UKAS accredited. During the monitoring, the sample recovered from GW10 was noted to contain no obvious

odours upon sampling, nor was there sheen present in the groundwater. The collected water sample appeared

to be clear and free from visible silt/ fines in the well annulus.

Table 2: Field parameter measurements (10 May 2019).

Monitoring Well ID pH Conductivity

(µS/cm) Temperature

(°C) Redox ORP

(mV) DO

(mg/L)

GW10 6.92 665.1 11.40 -10.2 0.91

2.3 LABORATORY ANALYSIS

Results of analysis are tabulated in Table 3 and are compared to the European Communities Environmental

Objectives (Groundwater) Regulations, 2010 (Statutory Instrument No. 9 of 2010), or 2016 (Statutory Instrument

No. 366 of 2016).


21 May 2019

3

Table 3: Groundwater monitoring results (10 May 2019), laboratory assessment.

Parameter Units GW Regs SI No 9 of 2010 / SI No 366 of

2016

GW10

Total Suspended Solids mg/L - <10

3.0 LABORATORY ANALYTICAL RESULTS

As can be seen from Table 3 above the TSS result measured for GW10 was below the laboratory detection limit

of 10mg/L. The laboratory certificate for the samples has been included in Attachment 2 of this letter report.

3.1 Discussion

The TSS result of <10 mg/L for GW10 collected on 10 May 2019 is considered representative for this well. Well

GW10 is screened in limestone between 11.5 and 19.2m below ground level (bgl). Refer to the attached

borehole log as received from Fogarty Drilling Ltd. Whilst there may be some clay infilling in the upper weathered

horizons generally limestone bedrock typically exhibits low TSS characteristics. The likely cause of the elevated

TSS concentration reported for the first sample collected from GW10 is that the well was not sufficiently

developed during drilling. Well development is the process of removing fines from a well prior to installation of

the piezometer. Fine sediments from the destructive drilling process can be retained in the well annulus and

gravel pack prior or in some weathered sections of the limestone. Purging of the well prior to sampling gradually

removes these fines and typically TSS levels drop over time.

The increased purge time completed for GW10 during the May 2019 monitoring event ensured that more fines

have been removed from the annulus / gravel pack and that one can expect lower TSS levels in this well that

are representative of the bedrock aquifer. Golder recommend that purge levels in GW10 continue to be high

and that the well is further developed during subsequent monitoring rounds this year to remove fines form the

well.

4.0 CONCLUSIONS

Monitoring well GW10 was installed on 08 January 2019 at the Vistakon facility as a replacement well for GW2

(as agreed with the EPA).

Concurrent monitoring of GW10 and GW2 on 11 February 2019 prior to decommissioning of GW2 identified an

elevated TSS concentration of 241 mg/L for well GW10. The EPA requested that well GW10 was re-sampled

for TSS. At the request of Vistakon, Golder completed a repeat monitoring event for GW10 for on 10 May 2019.

The TSS result for the May 2019 monitoring round was below the laboratory detection limit of 10 mg/L. It

appears that some fines/sediments that are created during the destructive air hammer drilling process remained

in the well annulus / gravel pack after well development. This means that elevated TSS were entrained in the

sample from GW10 after the first monitoring event – which are not representative of the limestone aquifer

conditions. Prior to sampling on 10 May 2019 Golder completed an hour-long purge of the well to ensure that

fines were removed. Golder recommend that increased purging to ensure well development along the entire

well screen length is completed for each subsequent monitoring event in 2019 to aid the well development.

Golder expect that the low/non detect TSS values are representative of the weathered limestone aquifer in

which GW10 is screened.

Golder consider that no follow up action is required in relation to the TSS concentrations observed in GW10 and

that the routine IE licence groundwater monitoring programme is continued as normal for the remainder of 2019.


21 May 2019

4

Yours sincerely

Golder Associates Ireland Limited

Kevin McGillycuddy Trevor Montague

Environmental Consultant Geo Environmental Director

KMG/TM/kmg

Attachment 1 – Figure Well Location

Attachment 2 – Exova Laboratory Report

Attachment 3 – GW10 Borehole Log

VISION CARE (IRELAND)

JOHNSON & JOHNSON VISION CARE (IRELAND)

INDUSTRIAL EMISSIONS LICENCE REVIEW

PROPOSED GROUND WATER

MONITORING INSTALLATION FOR GW2

IE0311829

IE0311829-30-DR-0001

AS SHOWN

GW2

LEGEND

NOTES

GW2 - LAYOUT PLAN

FORMAL ISSUE

Unit 3 Deeside Point

Zone 3

Deeside Industrial Park

Deeside

Golder Associates Ltd

Attention :

Date :

Your reference :

Our reference :

Location :

Date samples received :

Status :

Issue :

Vistakon J&J

14th May, 2019

Final report

Senior Project Manager

Exova Jones Environmental

CH5 2UA

Tel: +44 (0) 1244 833780

Fax: +44 (0) 1244 833781

One sample were received for analysis on 14th May, 2019 of which one 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.

Town Centre House

Dublin Road

Naas

Co Kildare

Ireland

Registered Office: Exova Environmental UK Limited, 10 Lower Grosvenor Place, London, SW1W 0EN. Reg No. 11371415

Compiled By:

Test Report 19/7755 Batch 1

Kevin McGillycuddy

15th May, 2019

1

Paul Boden BSc

18113929

QF-PM 3.1.1 v16Please include all sections of this report if it is reproduced

All solid results are expressed on a dry weight basis unless stated otherwise. 1 of 6

Client Name: Report : Liquid

Reference:

Location:

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

JE Job No.: 19/7755 H=H2SO4, Z=ZnAc, N=NaOH, HN=HN03

J E Sample No. 1-2

Sample ID GW10

Depth

COC No / misc

Containers P

Sample Date 10/05/2019

Sample Type Ground Water

Batch Number 1

Date of Receipt 14/05/2019

Total Suspended Solids # <10 <10 mg/l TM37/PM0

Vistakon J&J

Kevin McGillycuddy

Please see attached notes for all

abbreviations and acronyms

LOD/LOR UnitsMethod

No.


Golder Associates Ltd

18113929



Notification of Deviating Samples

J E

Job

No.

Batch Depth J E 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: Golder Associates Ltd

Reference:

Location:

No deviating sample report results for job 19/7755


18113929

Vistakon J&J

Kevin McGillycuddy

QF-PM 3.1.11 v3 Please include all sections of this report if it is reproduced 3 of 6

JE 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.

19/7755

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.



JE Job No.:

#

SA

B

DR

M

NA

NAD

ND

NDP

SS

SV

W

+

++

*

AD

CO

LOD/LOR

ME

NFD

BS

LB

N

TB

OC

19/7755

Not applicable

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

Dilution required.

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

MCERTS accredited.

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 Exova Jones Environmental 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



JE Job No: 19/7755

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

TM37

Modified methods USEPA 160.2, EN872:2005 and SMWW 2540D. Gravimetric

determination of Total Suspended Solids. Sample is filtered through a 1.5um pore size

glass fibre filter and the resulting residue is dried and weighed.

PM0 No preparation is required. Yes

Exova Jones Environmental Method Code Appendix

QF-PM 3.1.10 v14 Please include all sections of this report if it is reproduced 6 of 6

PROJECT : GW2 New Monitoring Well . Site Name :J&J ,Vistakon, Limerick .

Page 1 of 2

Log of Trial Borehole @ Johnson & Johnson Health Care , Vistakon , LIMERICK

Project ; new GW2

8 / Jan / 19

Description ; Monitor b/h to 18 Mtrs.

Location ;Behind Kerb-line at SISK site compound , before tanker gantry . GW 2. ITM Easting 563,370 ITM Northing 658,279 Elevation: Malin Head 8 Mtrs.

Contact ; T Fogarty . Contractor & site PSCS .087 2935855 . [email protected]

Site Supervisor ; Sean Linehan , SISK Ltd. Prelim Result / Yield ;

Date of Drilling ; 8-9 Jan 2019 Static Water Level :

Weather ; Good , Dry. Chemical Test N

From To mOD Description Construction Notes

GL 0.7 Made ground , backfilled CLAYs

Overburden drilled @ 205 To 12 Mtrs. 12 Mtrs of 168mm steel casing install & removed .

0.7 2.2 Soft dark Brown silty CLAYS with Pieces of timber- tress debris . (adjacent to river(s)= silt bank)

2.2 4.6 Light Grey - Brown consolidated silty CLAYs with boulders . Dry

4.6 5.7 Limestone shelf / boulder

Continue drilling @ 155mm from 11.3 Mtrs to 19.2 Mtrs.

5.7 6.5 Soft grey -brown SILT .

6.5 9.2 Consolidated grey Boulder CLAYS with coarse Limestone Gravels.

9.2 11.5 Dark yellow Clay filled weathered Limestone , Dry

@ 11.5 “Rathkeale” LIMESTONE

11.5 12.3 Weathered LIMESTONE , first water strike @ 11.7 mtrs , Recovers to 2.3 M BGL in 20 mins

9 Mtrs of PVC monitoring pipe & 9Mtrs Of PVC screen

12.3 19.2 Dark Muddy Limestone with shale layers , 3 small water strikes @ 13.1 , 15.5 & 17.4 Mtrs. minimal.

Non – calc gravel pack to 19.2 Mtrs .

PROJECT : GW2 New Monitoring Well . Site Name :J&J ,Vistakon, Limerick .

Page 2 of 2

Notes;

Monitoring borehole drilled to 19.2 Mtrs via consolidated CLAYs over wthd Limestone bedrock.

9 Mtrs of 55mm I.D PVC casing & 9 Mtrs of Screen installed . Annulus area backfilled with 10-12mm Non – calcareous gravel pack back to 8.7 Mtrs .

0.7 Mtrs of Bentonite pellets added & allowed to hydrate overnight , 8 / Jan.

Annulus area grouted (NPC ; Bentonite (20%)) form 8 Mtrs back to G.L .

168mm standpipe and lockable cap installed . 1.5 Mtr concrete base & Bollards .

End of borehole @ 19.2 Mtrs . 9 / Jan

Well developed for -3--hrs on completion

Estimated Yield @ EOH = Water appearance / time to clear –0.3--- hrs.

Notes / Observations;

1.0 introduction and background · 2019-07-28 · 1.0 introduction and background this letter...

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