A.02.11_Attach_2_Ref_2a_Annual_Monitoring_Report_2017_CCVI018_POL_POINT_83_ENG_FINAL.pdf

Groundwater Monitoring report May – August 2017

CCVI018 POL Point 83 - Caserma Del

Din USAG Italy VMC

U.S. Army Corps of Engineers

FINAL VERSION

Project number: 60576183

07 November 2017

CCVI018 POL Point 83 - Caserma Del Din USAG Italy

Groundwater Monitoring report May – August 2017

W912GB-16-P-0013

AECOM Project number: 60576183

Prepared for: US Army Corps of Engineers

AECOM

Prepared for:

U.S. Army Corps of Engineers

Prepared by:

AECOM URS Italia S.p.A.

AECOM URS Italia S.p.a.

20143 - 27

Giacomo Watt street

Milan

Italia

T: +39 02 4225561 aecom.com

© 2017 AECOM URS Italia S.p.a.. All Rights Reserved.

This document has been prepared by AECOM URS Italia S.p.a. (“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.

Table of Contents

Introduction

Site setting

2.1. Site description and geographical setting

2.2. Geological and hydrogeological setting

2.3. Past activities

Description of activities

3.1. Groundwater level measurement and chemical-physical parameters

3.2. Groundwater sampling

Results of campaigns

4.1. Results of groundwater measurements level and chemical-physical parameters

4.1.1. May 2017

4.1.2. August 2017

4.2. Analytical results

4.2.1. Analytical results of May 2017

4.2.2. Analytical results of August 2017

4.3. Trend analysis

4.3.1. Total Hydrocarbons

4.3.2. Benzene

4.3.3. Toluene

4.3.4. Ethylbenzene

4.3.5. (m+p) Xylene

4.3.6. MTBE

4.4. Geochemical indicators

Conclusion

Reference documents

Tables

Table 1A: Chemical – Physical Parameters May 2017

Table 1B: Chemical – Physical Parameters August 2017

Table 2: Analytical results May 2017

Table 3: Analytical results August 2017

Table 4: Analytical results of monitoring campaigns from November 2012 to August 2017

Figures

Figure 01: Site Location

Figure 02: Groundwater monitoring network

Figure 03: Groundwater contour map – May 2017

Figure 04: Groundwater contour map – August 2017

Annex

Annex 1: Analytical Certificates of samples taken with ARPAV

Annex 2: Analytical Certificates (May 2017)

Annex 3: Analytical Certificates (August 2017)

Acronyms

Acronym Meanings

°C Celsius degree a.s.l. above sea level g.l. ground level cm centimeters

CSC Contamination threshold concentration, in italian concentrazione soglia di contaminazione

CSR Risk threshold concentration, in italian concentrazione soglia di rischio

D.Lgs 152/06 Legislative Decree 3rd April 2006, n. 152 km Chilometers m metres mg/l milligrams over liter µg/l micrograms over liter mS/cm milliSiemens over centimeters mV milliVolt

NTU Nephelometric Turbidity Units

QA/QC Quality Assurance / Quality Control

USACE United States Army Corps of Engineers

USAG United States Army Garrison

Introduction

AECOM URS Italia S.p.A. performs the groundwater monitoring campaigns of the POL Point 83 for the

United States Army Corps of Engineers (USACE). POL Point 83 is located at the Caserma Del Din of

Vicenza. The monitoring campaigns respect the Remedial Operational Plan of December 2016, approved with the Conference of Services of 04 April 2017. The Remedial Operational Plan follows the environmental analysis carried out at the site since July 2009 and the Risk Assessment approved during the Conference of Services held on 25th November 2014.

This document is prepared within the contract n. W912GB-16-P-0013 Compliance Cleanup number

CCVI018. It is based on the groundwater Monitored Natural Attenuation (MNA) and it presents the results of monitoring campaigns performed on May 2017 and August 2017.

The document is subdivided in the below listed sections:

- Section 1: It presents an overview of the activities and the structure of the document

- Section 2: description of the site and its geological

- Section 3: description of past analysis

- Section 4: the results of the last monitoring campaigns

- Section 5: conclusions

- Section 6: bibliography and reference documents

Site setting

2.1. Site description and geographical setting

The Caserma Del Din military installation, located 4 km north of the city of Vicenza, occupies the western part of the former Dal Molin airport. Caserma Del Din is surrounded on every side by residential and rural areas. A green field area, property of the Vicenza Municipality is located east of the military installation. On the eastern border of the green field there is small area dedicated to commercial activities and includes filling stations, car and motorcycle repair shops, stores and sport centers.

The site POL Point 83 is a former fuel storage area located in the western part of Caserma Del Din. The storage point have been demolished due to an enlargement and modification plan of the military installation. The storage point was equipped with a 15 m3 UST for Diesel Fuel and a 10 m3 for unleaded gasoline. The USTs were made of steel with reinforced concrete mat foundation and cover. The USTs were located under the filling station building, equipped with two (2) fuel dispensers. After the completion of demolition activities, the Site is now confining with a road on the northern side, a green area on the southern and eastern side.

The Bacchiglione River flows on the north-west boundary of the military installation, near the POL Point

83 area.

In attached Figure 01 is presented the general setting of the Site.

2.2. Geological and hydrogeological setting

The plain of Vicenza is made up of alluvial deposits related to three fluvial systems: Leogra, Timonchio, Astico and Brenta. These fluvial systems originate from the karstic system of the Sette Comuni plateau and from the calcareous formations of the Lessini mountains.

The northern part of the high and middle Venetian plain is mainly composed of coarse sand and gravel deposited by the prealpine rivers (Brenta) at the outlet of the valleys. In the higher part of the plain, near the prealpine mountains, several alluvial fans are overlaid, created by river overflows and migrations, forming mainly gravel deposits with undifferentiated structure even hundreds meters thick. In the middle plain, the alluvial fans of different ages are not superimposed but are clearly divided by thick silty-clayey strata that sometimes tend to cover totally the fans. The subsoil stratigraphy is characterized by alternating strata of alluvial gravel and silt and clay at least 300-400 m thick.

Due to the lithostratigraphic and hydrogeological characteristics of the Vicenza plain, in the subsoil there are several aquifers whose features are connected with the structure of the permeable coarse-grained alluvial sediments. In the high plain a single phreatic aquifer is present, while in the middle plain there is a multiple aquifer system with a phreatic aquifer and underlying confined aquifers. In the zone of transition between the two aquifer systems there is a line of “risorgive” (natural springs).

Specifically, in the area of interest there is a multi-layered aquifer system that includes a regional interest aquifer, typical of the middle and low Venetian plain. Groundwater levels have semi-artesian features that become artesian with increasing depth.

Based on previously performed investigations at the Site, the stratigraphy can be summarized as below:

A layer of filling material from surface to a variable depth of 0.3 to 2.4 meters b.g.l.. It is composed of sand with gravel and underlying silty sands and silts.

A layer of brown and grey silt, sometimes clayey, and of clay with silt, till a maximum depth of about 6 meters b.g.l..

A layer that spans from 4 meters b.g.l. till at least the maximum depth of the performed investigations (11 meters b.g.l.), composed of brown and grey medium and fine sand and, under the 8-10 meters b.g.l., of gravelly sand.

The lower sandy and gravelly level is part of a mainly phreatic aquifer.

2.3. Past activities

The Site was a gasoline deposit area where a 15 m3 tank was underground located and a 10 m3 leadless oil tank were located.

The area was characterized by tanks removal activities, performed on the basis of a modification, reconstruction plan of the site. During investigations performed as final test after USTs removal and subsequent characterization activities of July and October 2009, exceedance of the regulatory limit for soil ( in Italian CSC) set out in Table 1, Annex 5, Title V, Part IV of D. Lgs. 152/06 were found for the following parameters: Light Hydrocarbons (C ≤ 12), Heavy Hydrocarbons (C > 12) and Lead.

During characterization analysis and subsequent groundwater monitoring campaigns exceedance of the regulatory limit for groundwater set out in Table 2, Annex 5, Title V, PartIV del D.Lgs. 152/06 were found for the parameters Total Hydrocarbons, BTEXS and MTBE. Moreover some exceedances were detected for iron and manganese. Those elements are ubiquitous in the area and probably should be linked to high natural background concentrations in the area.

Following these investigations, a risk assessment was performed (January 2010), then updated in

September 2010. The most recent risk assessment, submitted in June 2014 and approved with

Conference of Services of 25 November 2014, includes the reference CSRs (Concentrazione Soglia di

Rischio) for soil and groundwater.

A safety measure Pump & Treat (P&T) system, designed in order to avoid the contaminated groundwater migration outside the subject area was in operational from August 2010 to January 2015.

The interruption of the P&T system was agreed on the Conference of Services hold on 25th November

2014.

A pilot campaign of Oxygen Releasing Compounds (ORC) injection was performed from October 2010 to May 2011, followed by site-wide interventions in the campaigns of December 2012 and June 2013.

The effectiveness of the treatment was evaluated though a series of groundwater monitoring campaigns performed from November 2012 until November 2015.

Since 2011 monitoring campaigns, some exceedances have been detected for total Hydrocarbons, Benzene, Ethylbenzene, Toluene, (m+p) Xylene and MTBE compounds.

On December 2016 the Site Specific “Remedial Operational Plan CCVI018, POL Point 83, Caserma Del

Din, USAG Italy Vicenza Military Community” was presented to Local Authorities and approved with prescriptions at the Conference of Services performed on 04th April 2017. The Remedial Plan considers, as remediation strategy the Monitored Natural Attenuation (MNA) on n. 12 monitoring wells located at the Site.

This document presents the results of two monitoring campaigns conducted in May 2017 and August

2017 under the above described Remedial Plan.

Description of activities

This paragraph presents the activities carried out during the groundwater monitoring campaigns performed in accordance with the Remedial Operational Plan of December 2016, and Local

Authorities prescriptions defined in the Conference of Services on 4th April 2017.

The activities were carried out in the following dates:

8th and 9th May 2017;

7th and 8th August 2017.

The following activities were performed:

Groundwater level and chemical-physical parameters measurement;

Groundwater sampling.

During monitoring activities of May 2017, the sampling of PZ.83-11 was carried out with ARPAV authority and the memorandum and analytical results are in Annex 1.

3.1. Groundwater level measurement and chemical-physical parameters

Before the sampling activities the following steps have been reached:

- Groundwater level measurements by using dedicated tools;

- Purging a rate of 3 volumes of groundwater per each well until the balance of chemical-physical parameters of water (pH, conducibility, temperature,…).

By using a multi-parametric probe, during purging activities the monitored parameters are the followings:

Temperature;

Specific conductance;

Dissolved Oxygen;

pH;

Redox;

Turbidity.

3.2. Groundwater sampling

In correspondence to the 12 wells composing the groundwater monitoring network, 12 samples were taken per each well. The monitoring network is composed by the following wells: NWP-10, NWP-06A, PZ. 83-2, PZ.83-3, PZ.83-6, PZ.83-7, PZ.83-7, PZ.83-8, PZ.83-10, PZ.83-11, PZ.83-11, PZ.83-12, PZ.83-13 and GW83-1).

This network includes the background monitoring well NWP-10. NWP-06; PZ.83-2, PZ.83-3, PZ.83-6, PZ.83-7, PZ.83-12 and PZ.83-13 are located in the central area of the site where it is located the residual contamination. PZ.83-8, PZ.83-10, GW83-1 and PZ.83-11 are located closed to the limit of the

Site and they represent the Point of Compliance of the Site.

The groundwater monitoring network is presented in Figure 02.

Specific information related to each sample was recorded in the field logbook, which describes the sampling location, the time, the sample name/number and type, and sampler’s identity. The list of samples and the type of analysis were defined on the Chain of Custody.

Collected groundwater samples were placed in designated containers to maintain a temperature of

4÷2 °C and delivered to the laboratory within 48 hours from the sampling.

In agreement with QA/QC procedures, a Field Duplicate (FD) was collected during each campaign.

According to the approved Remediation Plan, the analytical protocol is as follows:

Benzene, Toluene, Ethylbenzene, p-Xylene (BTEX);

Total Petroleum Hydrocarbons (TPH);

Methyl tert-butyl ether (MTBE);

Nitrates;

Sulfates;

Methane;

DOC;

Manganese;

Manganese (II);

Total Iron;

Iron (II);

The analytical methods adopted for the parameters are listed in the table below.

Table 3-1: Analytical Program

Compound Analytical Program

Benzene, Toluene, Ethyllbenzene, Xylene (BTEX) EPA 5030C 2003 + EPA 8260C 2006

Total Hydrocarbons (TPH) EPA 5021A 2014 + EPA 8015C 2007 + UNI EN ISO

9377 – 2:2002

Iron EPA 6010D 2014

Iron (II) APHA Standard Methods for the Examination of Water and Wastewater, ed 22nd 2012, 3500-Fe B

Manganese EPA 6020B 2014

Manganese (II), MIP-918 2017 Rev. 1.0

Methane RSK-175 1998

Anions APAT CNR IRSA 420 Man 29 2003

Metil-t-butil Etere (MTBE) EPA 5030C 2003 + EPA 8260C 2006

Dissolved Organic Carbon (DOC) UNI EN 1484:1999

Results of campaigns

4.1. Results of groundwater measurements level and chemical-physical parameters

4.1.1. May 2017

The results of the groundwater measurement level of May 2017 shows that the groundwater level varied between 5,33 m from wellhead (NWP-10) and 6,48 m from well head (PZ.83-13). The elevation of groundwater level with respect to the mean sea level ranged between 32,456 m a.s.l. (NWP-10) and

31,465 m a.s.l. (PZ.83-11). The values are presented in Table 1a. On the basis of groundwater level measurement it was possible to reconstruct groundwater flow direction. Groundwater table flows form

Est to West, towards the Bacchiglione River, with an average hydraulic gradient of about 0.9%, and higher values in the central area of the site (Figure 03A).

The chemical-physical parameters ranged as follows:

Temperature between 14,9 and 16,11°C;

Electrical conductance between 0,583 and 0,767 mS/cm;

Dissolved Oxygen between 0,31 and 0,92 mg/l;

pH between 6,53 and 7,07;

Redox between -231 and 77 mV;

Turbidity between 6,2 NTU and 5999 NTU.

4.1.2. August 2017

The results of the groundwater measurement level of August 2017 shows that the groundwater level varied between 5,17 m from wellhead (PZ.83-7) and 6,62 m from wellhead (PZ.83-13). The elevation of groundwater level with respect to the mean sea level ranged between 32,39 m a.s.l. (PZ.83-7) and

31,35 m a.s.l. (PZ.83-10). The values are presented in Table 1b. On the basis of groundwater level measurement it was possible to reconstruct groundwater flow direction. Groundwater table flows form

Est to West, towards the Bacchiglione River, with an average hydraulic gradient of about 0.5%, and higher values in the central area of the site (Figure 03B).

The chemical-physical parameters ranged as follows:

Temperature between 15,14 and 16,34°C;

Electrical conductance between 0,504 and 0,703 mS/cm;

Dissolved Oxygen between 0,31 and 1,86 mg/l;

pH between 6,96 and 7,26;

Redox between -163 and 102 mV;

Turbidity between 31,9 NTU and 78 NTU.

4.2. Analytical results

4.2.1. Analytical results of May 2017

The n.12 samples collected from the groundwater monitoring network of the Site in May 2017 were analyzed in accordance with the analytical protocol defined in the approved Remedial Operational Plan and described in chapter 3.2 of this document.

The analytical results of May 2017 monitoring campaign showed the following exceedances of the

CSR limits defined in the Risk Assessment approved in November 2014:

Total Hydrocarbons n-hexane in PZ.83-3 with a concertation of 1010 µg/l, against a CSR limit of

474,8 µg/l;

MTBE in PZ.83-7 with a concertation of 117 µg/l, against a CSR limit of 54,3 µg/l.

The results of on the analysis performed on the samples collected at the points of compliance of the

Site did not show exceedances of CSC limits, with the exception of Iron and Manganese. Those elements are ubiquitous in the area and probably should be linked to high natural background concentrations in the area with the exception of NWP-10.

Analytical results are presented in attached Table 2, Analytical Certificates are presented in Annex 2.

4.2.2. Analytical results of August 2017

The analytical results of August 2017 monitoring campaign showed the following exceedances of the

CSR limits defined in the Risk Assessment approved in November 2014:

Total Hydrocarbons n-hexane in PZ.83-3 with a concentration of 773 µg/l, against a CSR limit of

474,8 µg/l;

MTBE in PZ.83-7 with a concentration of 68,3 µg/l, against a CSR limit of 54,3 µg/l;

(m+p) Xylene in PZ.83-3 with a concentration of16,10 µg/l, against a CSR limit of 13,6 µg/l.

The results of on the analysis performed on the samples collected at the points of compliance of the

Site did not show exceedances of CSC limits, with the exception of Iron and Manganese. Those elements are ubiquitous in the area and probably should be linked to high natural background concentrations in the area with the exception of NWP-10.

Analytical results are presented in attached Table 3, Analytical Certificates are presented in Annex 3.

4.3. Trend analysis

This paragraph present the historical trend of concentration of the contaminants of concerns of the site for the period November 2012 – August 2017. The following monitoring wells were considered:

PZ.83-2, PZ.83-3, PZ.83-6 and PZ.83-7. They were located within the area identified as the source of contamination, downgradient from the removed USTs. This area was historically characterized by exceedances of Total Hydrocarbons, Benzene, Ethylbenzene, (m+p) Xylene and MTBE. The complete analytical results are presented in the attached Table 4.

4.3.1. Total Hydrocarbons

The monitoring well PZ.83-3 presents exceedances of total hydrocarbons CSR limit (474,8 µg/l) with picks over 4000 µg/l between 2012 and 2013. Other relevant picks were detected for PZ.83-7 during

2013 campaigns. Last monitoring campaigns showed exceedances of CSR limit only in PZ.83-3, with concentrations lower than the ones detected during 2012-2013 period. Based on the trend identified, it is expected for TPH an half-life of 24-36 months, in accordance with what presented in the Remedial

Operational Plan.

Figure 1: trend in TPH concentrations (November 2012 – August 2017)

4.3.2. Benzene

The concentration of Benzene shows a decreasing trend during the reference time period, with concentrations. Some exceedances were detected in PZ.83-7 between 2012 and 2013 with values higher than 9 µg/l against a CSR limit of 1,4 µg/l. Some random exceedances were detected also in

PZ.83-6 and PZ.83-2. All the remaining wells showed concentration values below CSR limit. Since

March 2014 no exceedances of CSR limit were registered, with the exception of a slight exceedance in

PZ83-6 in October 2015.

Figure 2: trend in benzene concentrations (November 2012 – August 2017)

4.3.3. Toluene

In the period November 2011 – August 2017 Toluene was always detected below the CSR limit (15 µg/l).

4.3.4. Ethylbenzene

The parameter Ethylbenzene was found with concentration above CSR limit (67,8 µg/l) only in PZ.83.3.

Exceedance were found between 2012 and late 2013 with a pick of 390 µg/l. It is possible to indentify a decreasing trend, with concentrations steadily below the CSR limit from 2014.

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T P

H (μ g /l

Total Hydrocarbons

CSR PZ.83-2 PZ.83-3 PZ.83-6 PZ.83-7 trend PZ 83-3

CSR

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B e n ze n e μ g /l

Benzene

CSR PZ.83-2 PZ.83-3 PZ.83-6 PZ.83-7 Trend (PZ.83-6) trend PZ 83-7

CSR

Figure 3: trend in ethylbenzene concentrations (November 2012 – August 2017)

4.3.5. (m+p) Xylene

The concentration of (m+p) Xylene are characterized by a decreasing trend. During the evaluation period (m+p) xylene concentrations were found above the CSR limit (13,6 µg/l) only at monitoring well

PZ.83-3, with values close to CSR limit in the two last monitoring campaigns. All the remaining wells showed concentration below the CSR limit, with an anomaly exceedance in PZ.83-2 during 2013.

Figure 4: trend in (m+p) Xylene concentrations (November 2012 – August 2017)

4.3.6. MTBE

The concentration of MTBE during November 2012 – August 2017 period is presented in the following diagram. Concentration in PZ.83-6 showed a decreasing trend. MTBE concentration in PZ.83-7 are instead fluctuant, with exceedances of CSR limit during the overall reference period. Except for

November 2012 and April 2013. The results of the last two monitoring campaigns showed values of

117 µg/l and 68,3 µg/l against a CSR limit of 54,3 µg/l. The decay time of MTBE is longer than for the rest of contaminants of concerns and will be analyzed in detail on the basis of the results derived from the prosecution of the monitoring campaigns.

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E th yl b e n ze n e (μ g /l

Ethylbenzene

CSR PZ.83-2 PZ.83-3 PZ.83-6 PZ.83-7 trend PZ83-3

CSR

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7(m

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(m-p) Xylene

CSR PZ.83-2 PZ.83-3 PZ.83-6 PZ.83-7 trend PZ 83-3

Figure 5: trend in MTBE concentrations (November 2012 – August 2017)

4.4. Geochemical indicators

The values of geochemical indicators detected at the POL Point 83 monitoring wells and their comparison with the concentrations revealed in the blank piezometer NWP-10 located upgradient from the site, revealed generally high values of Iron (II), Manganese (II) and Methane, associated with low concentration of Dissolved Oxygen (lower than 1mg/l) in the area with residual contamination, confirming the presence of reductive conditions, .favoring predominantly anaerobic degradation processes.

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M T

B E

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MTBE

CSR PZ.83-2 PZ.83-3 PZ.83-6 PZ.83-7 trend PZ83-6 trend PZ 83-7

Conclusion

This document presents the results of the groundwater monitoring campaign performed at POL Point

83 in May and August 2017 performed by AECOM under Contract W912GB-16-P-0013 Compliance

Cleanup number CCVI018. The campaigns were carried out in accordance with Remedial Operational

Plan, approved with the Conference of Services of 04 April 2017.

Laboratory analysis on groundwater samples collected at the site groundwater monitoring network (12 monitoring wells) showed exceedances of the CSR limit for the parameter Total Hydrocarbons and

MTBE and (m+p) xylene. The exceedances of Total Hydrocarbons and (m+p) Xylene were identified in

PZ.83-3 and MTBE in PZ.83-7. All the remaining wells are characterized by concentration below the

CSR limit.

The analysis on groundwater samples collected at the Point of Compliance did not reveal exceedances with exceptions for iron and manganese. Both compounds have been found in all samples with exception of NWP-10. Those elements are ubiquitous in the area and probably should be linked to high natural background concentrations in the area.

The results of the monitoring campaigns described in this document confirm the trends of concentration forecasted in the approved Remedial Operation Plan for all contaminants of interest.

With relation to Total Petroleum Hydrocarbons concentrations, the trend is decreasing with an expected half life time of 24-36 months. MTBE decay time at monitoring well PZ.83-7 will be evaluated on the basis of the results of next monitoring campaigns, which will continue on a quarterly basis.

Reference documents

AMEC (2009) “Characterization Plan according to D.Lgs. 152/06, Att. IV to Title V – POL Point 83, Dal

Molin Airfield, Vicenza” – October 2009

AMEC (2014) “Site Specific Risk Assessment, according to D.Lgs. 152/06 – Response to the CoS of

29/01/2014 – POL Point 83 (USTs 83 A-B), Dal Molin Airfield, Vicenza” – June 2014

Minutes of Conference of Services held on 25th November 2014. Approval of Site Specific Risk

Assessment of June 2014

Directorate of Public Works “Technical Report of the monitoring results POL Point 83 (UST 83 A, B) –

November 2015

CH2M HILL (2016) “POL83 Full Scale ORC Injection Remediation Report” – February 2016

AECOM “Remedial Operational Plan CCNI018 POL Point 83 Caserma Del Din USAG Italy Vicenza

Military Community” – December 2016

Minutes of Conference of Services held on 4th April 2017. Approval of Remedial Operational Plan of

December 2016

W912GB-16-P-0013 CCVI018 POL POINT 83, Caserma Del Din Preliminary evaluation of the efficacy of the MNA intervention

Tables

W912GB16P0013_CCVI018

POL POINT 83 - USAG ITALY VMC

Table 1a. Chemical Physical Parameters

May 2017

AECOM

ID Date Water table level

(m from top of well)

Top of well (m a.s.l.)

Water table level

( m a.s.l.)

Temperature

(°C)

Conducibility

(mS/cm)

Dissolved

Oxygen (mg/l) pH

Redox

(mV)

Torbidity

(NTU)

NWP-10 08/05/2017 5,33 37,786 32,456 15,58 0,635 0,52 7 77 5999

NWP-06A 08/05/2017 5,65 37,757 32,107 15,26 0,583 0,31 7,01 -244 109

PZ.83-2 08/05/2017 6,30 37,772 31,472 15,69 0,675 0,44 6,67 -59 22,2

PZ.83-3 08/05/2017 5,96 37,69 31,73 15,6 0,677 0,31 7,02 -231 6,2

PZ.83-6 08/05/2017 6,10 37,747 31,647 15,66 0,681 0,39 6,98 -133 9,1

PZ.83-7 08/05/2017 5,81 37,558 31,748 15,16 0,722 0,92 7,2 29 64,3

PZ.83-8 08/05/2017 5,615 37,203 31,588 15,09 0,704 0,35 7 -142 22,9

PZ.83-10 08/05/2017 5,44 37,063 31,623 15,29 0,618 0,35 6,97 -183 29,2

PZ.83-11 08/05/2017 5,78 37,245 31,465 14,9 0,597 0,34 6,93 -132 6,3

PZ.83-12 08/05/2017 5,79 37,409 31,619 16,05 0,767 0,5 6,53 -116 15,5

PZ.83-13 08/05/2017 6,48 38,126 31,646 15,6 0,67 0,42 6,96 -148 403

GW83-1 08/05/2017 5,47 NA NA 16,11 0,612 0,28 7,07 -153 40,1

ID Date Water table level

(m from top of well)

Top of well (m a.s.l.)

Water table level

( m a.s.l.)

Temperature

(°C)

Conducibility

(mS/cm)

Dissolved

Oxygen (mg/l) pH

Redox

(mV)

Torbidity

(NTU)

NWP-10 08/07/2017 5,69 37,786 32,096 16,13 0,562 0,51 7,23 102 78

NWP-06A 08/07/2017 5,82 37,757 31,937 15,52 0,504 0,36 7,23 -163 67,8

PZ.83-2 08/07/2017 6,17 37,772 31,602 15,68 0,703 0,38 6,96 -40 32,1

PZ.83-3 08/07/2017 6,11 37,69 31,58 15,9 0,631 0,44 7,12 -147 31,9

PZ.83-6 08/07/2017 6,23 37,747 31,517 15,63 0,585 0,67 7,15 -134 37,6

PZ.83-7 08/07/2017 5,17 37,558 32,388 16,18 0,617 1,86 7,14 -80 69,9

PZ.83-8 08/07/2017 5,74 37,203 31,463 16,17 0,63 0,42 7,12 -110 38,8

PZ.83-10 08/07/2017 5,71 37,063 31,353 15,69 0,606 0,31 7,19 -111 40,3

PZ.83-11 08/07/2017 5,89 37,245 31,355 15,14 0,53 0,34 7,26 -97 38,5

PZ.83-12 08/07/2017 5,93 37,409 31,479 16,34 0,671 0,43 6,97 -111 36,5

PZ.83-13 08/07/2017 6,62 38,126 31,506 15,47 0,588 0,37 7,26 -133 45,8

GW83-1 08/07/2017 5,59 NA NA 16,16 0,546 0,35 7,18 -118 36,9

Table 1b. Chemical & Physical Parameters

August 2017

Tabele 2. Analitical Results

May 2017

AECOM

Parameter

Total

Hydrocarbons n-hexane

Hydrocarbons

C6-C10 n-hexane

Hydrocarbons C10-

C40 n-hexane MTBE Benzene Toluene Ethylbenzene (m+p)-Xylene Styrene Iron Manganese Iron II Manganese II Nitrates Sulfates

Dissolved

Organic Carbon

(DOC)

Methane u.d.m. μg/l μg/l μg/l μg/l μg/l μg/l μg/l μg/l μg/l μg/l μg/l μg/l μg/l μg/l μg/l μg/l μg/l

CSR, Adr 2014 - - 474,8 1,4 67,8 20,3 13,6 54,3 -- -- -- -- -- -- -- -- --

CSC D. Lgs. 152/06 - - 350 1 50 15 10 40 (limite ISS) 25 200 50 - -- -- 250 -- --

PZ.83-2 09/05/2017 <10,0 43,3 43,3 0,1 0,1 0,1 0,0 0,51 <0,05 581 679 649 231,0 0,7 13,6 0,7 157,0

PZ.83-3 08/05/2017 262,0 749,0 1010,0 0,1 8,2 0,1 13,0 <0,23 <0,08 7710,0 329,0 7420,0 279,0 <0,10 14,4 1,4 489,0

PZ.83-6 09/05/2017 <10,0 65,6 65,6 0,2 0,1 0,1 0,1 9,3 <0,05 4560,0 413,0 4640,0 238,0 0,1 12,1 1,1 133,0

PZ.83-7 09/05/2017 22,3 35,7 58,0 0,1 0,1 0,2 0,3 117,0 <0,05 576,0 856,0 683,0 289,0 <0,10 8,7 2,0 <5

PZ.83-8 09/05/2017 <10,0 173,0 173,0 <0,05 <0,05 <0,05 <0,04 2,4 <0,05 1690,0 214,0 2120,0 93,0 <0,10 <0,10 1,4 601,0

PZ.83-10 09/05/2017 <10,0 35,0 35,0 <0,05 <0,05 <0,05 <0,04 0,3 <0,05 2380,0 48,9 3540,0 108,0 <0,10 0,2 1,3 1490,0

PZ.83-11 09/05/2017 <10,0 135,0 135,0 <0,05 <0,05 <0,05 0,1 0,2 <0,05 984,0 62,0 1420,0 60,8 0,4 4,8 1,3 356,0

PZ.83-12 09/05/2017 <10,0 52,0 52,0 <0,05 <0,05 <0,05 0,0 4,6 <0,05 4400,0 506,0 5450,0 243,0 <0,10 7,2 1,2 42,0

PZ.83-13 08/05/2017 <10,0 232,0 232,0 <0,05 <0,05 <0,05 <0,04 0,6 <0,05 1490,0 142,0 2230,0 107,0 <0,10 3,9 1,4 <5

GW83-1 09/05/2017 <10,0 67,7 67,7 0,2 <0,05 <0,05 <0,04 0,4 <0,05 1120,0 99,5 883,0 105,0 <0,10 0,2 1,4 2390,0

NWP06-A 08/05/2017 <10,0 44,0 44,0 <0,05 <0,05 <0,05 <0,04 <0,05 <0,05 1620,0 109,0 2340,0 107,0 0,1 6,0 1,5 974,0

NWP10 08/05/2017 <10,0 102,0 102,0 <0,05 <0,05 0,1 0,2 <0,05 <0,05 <20,0 20,8 26,5 11,0 1,2 53,5 0,8 <5

117 Excess of parameter compared with CSR limits

1690 Excess of other parameters compared with CSC limits

Contaminants of interest Other Parameters Geochemical Indicators

Well ID

Table 3. Analitical Results

August 2017

AECOM

Parameter

Total

Hydrocarbon s n-hexane

Hydrocarbon s C6-C10 n-hexane

Hydrocarbon s C10-C40 n-hexane

MTBE Benzene Toluene Ethylbenzene (m+p)-Xylene Styrene Iron Manganese Iron II Manganese II Nitrates Sulfates

Dissolved

Organic Carbon

(DOC)

Methane u.d.m. μg/l μg/l μg/l μg/l μg/l μg/l μg/l μg/l μg/l μg/l μg/l μg/l μg/l μg/l μg/l μg/l μg/l

CSR, Adr 2014 - - 474,8 1,4 67,8 20,3 13,6 54,3 -- -- -- -- -- -- -- -- --

CSC D. Lgs. 152/06 - - 350 1 50 15 10 40 (limite ISS) 25 200 50 - -- -- 250 -- --

07/08/2017 <10,0 <25,0 0,0 0,1 0,1 0,1 0,1 2,2 <0,05 421,0 796,0 348,0 207,0 7,6 25,7 2,0 467,0

07/08/2017 442,0 331,0 773,0 0,2 13,6 0,1 16,1 <0,20 < 0,10 8740,0 397,0 6380,0 283,0 <0,10 13,6 1,8 623,0

07/08/2017 <10,0 <25,0 0,0 0,1 0,1 0,1 0,0 9,3 <0,05 5360,0 445,0 4640,0 238,0 0,1 12,1 1,1 133,0

07/08/2017 21,7 <25,0 21,7 0,4 0,1 0,1 0,1 68,3 <0,05 1070,0 929,0 1380,0 361,0 <0,10 2,6 1,5 44,0

08/08/2017 <10,0 176,0 176,0 <0,05 <0,05 <0,05 <0,04 3,7 <0,05 1810,0 383,0 1710,0 155,0 0,1 0,5 1,2 32,0

08/08/2017 <10,0 <25,0 0,0 <0,05 <0,05 <0,05 <0,04 1,2 <0,05 1600,0 140,0 1230,0 <10,0 <0,10 1,0 1,3 80,0

08/08/2017 <10,0 <25,0 0,0 <0,05 <0,05 <0,05 <0,04 0,2 <0,05 695,0 55,7 606,0 <10,0 0,4 7,1 0,9 1060,0

08/08/2017 <10,0 <25,0 0,0 <0,05 <0,05 <0,05 <0,04 2,7 <0,05 5850,0 566,0 4430,0 63,9 <0,10 8,6 1,1 10,0

08/08/2017 <10,0 <25,0 0,0 <0,05 <0,05 <0,05 <0,04 0,5 <0,05 1370,0 104,0 1180,0 <10,0 <0,10 4,1 0,9 14,0

08/08/2017 <10,0 <25,0 0,0 0,2 <0,05 <0,05 <0,04 <0,50 <0,05 1240,0 107,0 916,0 <10,0 <0,10 <0,10 1,5 4240,0

07/08/2017 <10,0 <25,0 0,0 <0,05 <0,05 <0,05 <0,04 <0,05 <0,05 1800,0 92,0 1370,0 29,6 <0,10 4,1 2,3 2380,0

07/08/2017 <10,0 <25,0 0,0 <0,05 <0,05 <0,05 <0,04 <0,05 <0,05 <15,0 14,7 <10,0 <10,0 1,2 51,7 0,6 350,0

117 Excess of parameter compared with CSR limits

1690 Excess of other parameters compared with CSC limits

Contaminants of interest Other Parameters Geochemical Indicators

Well ID

Table 4: Groundwater analytical results 2012 - 2017 AECOM

Parameter

Hydrocarbon s C6-C10 n-hexane

Hydrocarbon s C10-C40 n-hexane

Total

Hydrocarbon s n-hexane

Benzene Ethylbenzene Toluene (m+p)-Xylene Styrene MtBE Iron Iron II Manganese Manganese II Nitrates Sulfates

Dissolved

Organic Carbon

(DOC)

Methane u.d.m. μg/l μg/l μg/l μg/l μg/l μg/l μg/l μg/l μg/l μg/l μg/l μg/l μg/l μg/l μg/l μg/l μg/l

CSR, Adr 2014 - - 474,8 1,4 67,8 20,3 13,6 54,3 -- -- -- -- -- -- -- -- --

CSC D. Lgs. 152/06 - - 350 1 50 15 10 40 (limite ISS) 25 200 50 - -- -- 250 -- --

13/11/2012 76,0 <25 88,5 0,5 0,8 1,1 0,5 1,0 <0,11 N.A. 432,0 1640,0 N.A. N.A. N.A. N.A. N.A.

21/12/2012 10,2 <25 22,7 0,1 0,1 0,1 0,0 1,5 <0,11 N.A. N.A. N.A. N.A. N.A. N.A. N.A. N.A.

31/01/2013 90,0 <25 103,0 1,2 2,1 0,2 1,6 2,3 <0,11 N.A. N.A. N.A. N.A. N.A. N.A. N.A. N.A.

28/02/2013 76,0 <25 88,5 0,7 0,1 0,1 0,7 1,9 <0,11 N.A. 638,0 810,0 N.A. N.A. N.A. N.A. N.A.

03/04/2013 N.A. N.A. 523,0 0,1 0,1 0,1 0,0 4,5 <0,11 N.A. N.A. N.A. N.A. N.A. N.A. N.A. N.A.

10/05/2013 104,0 <25 117,0 0,1 0,1 0,1 1,5 1,0 <0,11 N.A. N.A. N.A. N.A. N.A. N.A. N.A. N.A.

30/05/2013 38,0 <25 50,5 0,1 0,1 0,1 0,0 1,0 <0,11 N.A. 493,0 430,0 N.A. N.A. N.A. N.A. N.A.

19/07/2013 312,0 <25 325,0 0,3 20,1 0,6 22,3 1,0 <0,11 N.A. N.A. N.A. N.A. N.A. N.A. N.A. N.A.

06/09/2013 22,1 <25 34,6 0,4 3,6 0,3 4,1 2,6 <0,11 N.A. 506,0 400,0 N.A. N.A. N.A. N.A. N.A.

30/10/2013 34,0 25,0 46,5 0,8 1,2 0,1 0,8 4,4 0,1 N.A. N.A. N.A. N.A. N.A. N.A. N.A. N.A.

27/11/2013 10,7 25,0 23,2 0,1 0,1 0,1 0,0 4,4 0,1 N.A. N.A. N.A. N.A. N.A. N.A. N.A. N.A.

10/01/2014 11,8 25,0 24,3 2,5 0,1 0,8 0,4 7,7 0,1 N.A. 740,0 340,0 N.A. N.A. N.A. N.A. N.A.

28/02/2014 10,0 25,0 17,5 0,1 0,1 0,1 0,0 1,0 0,1 N.A. N.A. N.A. N.A. N.A. N.A. N.A. N.A.

28/03/2014 10,0 25,0 17,5 0,1 1,0 0,2 1,4 1,0 0,1 N.A. N.A. N.A. N.A. N.A. N.A. N.A. N.A.

09/05/2014 10,0 25,0 17,5 0,5 1,4 0,1 1,3 4,7 0,1 N.A. N.A. N.A. N.A. N.A. N.A. N.A. N.A.

22/01/2015 10,0 25,0 17,5 0,1 0,1 0,1 0,0 1,0 0,1 1130,0 428,0 870,0 N.A. N.A. N.A. N.A. N.A.

30/04/2015 11,5 25,0 24,0 0,1 0,1 0,1 0,0 1,2 N.A. N.A. N.A. N.A. N.A. N.A. N.A. N.A. N.A.

28/05/2015 31,0 48,0 79,0 0,1 0,4 0,2 1,3 0,7 0,1 N.A. 32,9 4010,0 N.A. N.A. N.A. N.A. N.A.

30/07/2015 69,5 59,0 129,0 0,1 2,7 0,1 5,3 1,6 N.A. N.A. N.A. N.A. N.A. N.A. N.A. N.A. N.A.

01/10/2015 10,0 25,0 17,5 0,1 0,1 0,2 0,1 2,4 0,1 N.A. 602,0 460,0 N.A. N.A. N.A. N.A. N.A.

20/10/2015 36,0 51,0 87,0 0,1 0,1 0,1 0,2 2,5 0,1 N.A. 646,0 900,0 N.A. N.A. N.A. N.A. N.A.

09/05/2017 <10,0 43,3 43,3 0,1 0,1 0,1 0,0 0,51 <0,05 581 679 649 231,0 0,7 13,6 0,7 157,0

07/08/2017 <10,0 <25,0 0,0 0,1 0,1 0,1 0,1 2,2 <0,05 421,0 796,0 348,0 207,0 7,6 25,7 2,0 467,0

13/11/2012 4100,0 <25 4110,0 1,5 0,6 3,7 600,0 8,6 <0,11 N.A. 800,0 3600,0 N.A. N.A. N.A. N.A. N.A.

21/12/2012 700,0 <25 713,0 0,1 0,1 0,1 0,6 2,8 <0,11 N.A. N.A. N.A. N.A. N.A. N.A. N.A. N.A.

31/01/2013 7100,0 <25 7110,0 0,7 390,0 0,4 960,0 2,3 0,2 N.A. N.A. N.A. N.A. N.A. N.A. N.A. N.A.

28/02/2013 7600,0 <25 7610,0 0,9 120,0 0,3 470,0 3,2 <0,11 N.A. 325,0 1260,0 N.A. N.A. N.A. N.A. N.A.

03/04/2013 N.A. N.A. 4610,0 1,3 1,1 0,8 279,0 1,3 <0,11 N.A. N.A. N.A. N.A. N.A. N.A. N.A. N.A.

10/05/2013 2900,0 <25 2910,0 0,4 65,0 0,4 266,0 2,5 <0,11 N.A. N.A. N.A. N.A. N.A. N.A. N.A. N.A.

30/05/2013 240,0 <25 253,0 0,1 0,1 0,1 6,8 1,0 <0,11 N.A. 399,0 <10 N.A. N.A. N.A. N.A. N.A.

19/07/2013 2380,0 <25 2390,0 0,2 0,1 0,1 210,0 1,0 <0,11 N.A. N.A. N.A. N.A. N.A. N.A. N.A. N.A.

06/09/2013 780,0 <25 793,0 0,2 4,5 0,4 86,0 1,0 <0,11 N.A. 310,0 4200,0 N.A. N.A. N.A. N.A. N.A.

30/10/2013 910,0 112,0 1020,0 0,2 84,0 0,6 30,0 1,0 4,4 N.A. N.A. N.A. N.A. N.A. N.A. N.A. N.A.

27/11/2013 380,0 50,0 430,0 0,1 0,1 0,1 0,0 1,4 2,2 N.A. N.A. N.A. N.A. N.A. N.A. N.A. N.A.

10/01/2014 4300,0 38,6 4340,0 0,3 157,0 0,9 114,0 1,0 0,1 N.A. 557,0 2950,0 N.A. N.A. N.A. N.A. N.A.

28/02/2014 1110,0 94,0 1200,0 0,2 122,0 0,6 148,0 1,0 0,1 N.A. N.A. N.A. N.A. N.A. N.A. N.A. N.A.

28/03/2014 590,0 25,0 603,0 0,1 54,0 0,1 73,0 1,0 0,1 N.A. N.A. N.A. N.A. N.A. N.A. N.A. N.A.

09/05/2014 2020,0 25,0 2030,0 0,1 1,3 0,1 42,0 3,6 0,1 N.A. N.A. N.A. N.A. N.A. N.A. N.A. N.A.

22/01/2015 2330,0 25,0 2340,0 0,1 2,5 0,1 68,0 1,0 0,1 5740,0 287,0 4600,0 N.A. N.A. N.A. N.A. N.A.

30/04/2015 380,0 25,0 393,0 0,1 0,1 0,1 0,0 2,2 N.A. N.A. N.A. N.A. N.A. N.A. N.A. N.A. N.A.

28/05/2015 400,0 36,0 436,0 0,1 0,1 0,1 0,0 1,0 0,1 N.A. 239,0 24700,0 N.A. N.A. N.A. N.A. N.A.

30/07/2015 455,0 258,0 713,0 0,1 34,0 0,1 44,5 1,1 N.A. N.A. N.A. N.A. N.A. N.A. N.A. N.A. N.A.

01/10/2015 570,0 660,0 1230,0 0,1 58,5 0,2 109,0 1,0 0,1 N.A. 283,0 5000,0 N.A. N.A. N.A. N.A. N.A.

20/10/2015 555,0 213,0 768,0 0,1 42,4 0,1 52,2 0,5 0,1 N.A. 257,0 4900,0 N.A. N.A. N.A. N.A. N.A.

27/11/2015 529,0 460,0 989,0 0,2 9,9 0,4 21,8 N.A. 0,1 N.A. N.A. N.A. N.A. N.A. N.A. N.A. N.A.

08/05/2017 262,0 749,0 1010,0 0,1 8,2 0,1 13,0 <0,23 <0,08 7710,0 329,0 7420,0 279,0 <0,10 14,4 1,4 489,0

07/08/2017 442,0 331,0 773,0 0,2 13,6 0,1 16,1 <0,20 < 0,10 8740,0 397,0 6380,0 283,0 <0,10 13,6 1,8 623,0

117 Excess of parameter compared with CSR limits

1690 Excess of other parameters compared with CSC limits

N.A. not analyzed

Contaminants of interest Other Parameters Geochemical Indicators

Well ID

PZ.83-2

PZ.83-3

Table 4: Groundwater analytical results 2012 - 2017 AECOM

Parameter

Hydrocarbon s C6-C10 n-hexane

Hydrocarbon s C10-C40 n-hexane

Total

Hydrocarbon s n-hexane

Benzene Ethylbenzene Toluene (m+p)-Xylene Styrene MtBE Iron Iron II Manganese Manganese II Nitrates Sulfates

Dissolved

Organic Carbon

(DOC)

Methane u.d.m. μg/l μg/l μg/l μg/l μg/l μg/l μg/l μg/l μg/l μg/l μg/l μg/l μg/l μg/l μg/l μg/l μg/l

CSR, Adr 2014 - - 474,8 1,4 67,8 20,3 13,6 54,3 -- -- -- -- -- -- -- -- --

CSC D. Lgs. 152/06 - - 350 1 50 15 10 40 (limite ISS) 25 200 50 - -- -- 250 -- --

Contaminants of interest Other Parameters Geochemical Indicators

Well ID

13/11/2012 121,0 <25 134,0 4,8 0,3 0,9 1,7 31,8 <0,11 N.A. 567,0 982,0 N.A. N.A. N.A. N.A. N.A.

21/12/2012 <10 <25 17,5 0,1 0,1 0,1 0,0 57,0 <0,11 N.A. N.A. N.A. N.A. N.A. N.A. N.A. N.A.

31/01/2013 104,0 <25 117,0 0,1 0,2 0,1 3,0 39,0 <0,11 N.A. N.A. N.A. N.A. N.A. N.A. N.A. N.A.

28/02/2013 60,0 <25 72,5 0,1 0,1 0,1 0,0 55,0 <0,11 N.A. 650,0 780,0 N.A. N.A. N.A. N.A. N.A.

03/04/2013 N.A. N.A. 125,0 0,1 0,1 0,1 0,0 20,8 <0,11 N.A. N.A. N.A. N.A. N.A. N.A. N.A. N.A.

10/05/2013 <10 <25 17,5 0,1 0,5 0,1 0,2 37,0 <0,11 N.A. N.A. N.A. N.A. N.A. N.A. N.A. N.A.

31/05/2013 <10 <25 17,5 0,1 0,1 0,1 0,0 40,0 <0,11 N.A. 574,0 1150,0 N.A. N.A. N.A. N.A. N.A.

19/07/2013 <10 <25 17,5 0,1 0,1 0,1 0,0 154,0 <0,11 N.A. N.A. N.A. N.A. N.A. N.A. N.A. N.A.

06/09/2013 <10 <25 17,5 0,2 0,1 0,1 0,0 18,4 <0,11 N.A. 392,0 2570,0 N.A. N.A. N.A. N.A. N.A.

30/10/2013 31,0 25,0 43,5 8,0 0,5 0,3 1,0 49,0 0,1 N.A. N.A. N.A. N.A. N.A. N.A. N.A. N.A.

27/11/2013 10,0 25,0 17,5 0,1 0,1 0,1 0,0 25,4 0,1 N.A. N.A. N.A. N.A. N.A. N.A. N.A. N.A.

10/01/2014 10,0 25,0 17,5 0,2 0,1 0,1 0,2 28,1 0,1 N.A. 550,0 1920,0 N.A. N.A. N.A. N.A. N.A.

28/02/2014 10,0 25,0 17,5 0,9 0,1 0,1 0,0 14,7 0,1 N.A. N.A. N.A. N.A. N.A. N.A. N.A. N.A.

28/03/2014 10,0 25,0 17,5 0,2 0,1 0,1 0,0 24,5 0,1 N.A. N.A. N.A. N.A. N.A. N.A. N.A. N.A.

09/05/2014 10,0 25,0 17,5 0,1 0,1 0,1 0,0 16,8 0,1 N.A. N.A. N.A. N.A. N.A. N.A. N.A. N.A.

22/01/2015 10,0 25,0 17,5 0,1 0,1 0,1 0,0 58,0 0,1 4790,0 281,0 3980,0 N.A. N.A. N.A. N.A. N.A.

30/04/2015 10,0 25,0 17,5 0,1 0,1 0,1 0,0 97,0 N.A. N.A. N.A. N.A. N.A. N.A. N.A. N.A. N.A.

28/05/2015 10,0 36,0 41,0 0,1 0,1 0,1 0,0 43,0 0,1 N.A. 281,0 3450,0 N.A. N.A. N.A. N.A. N.A.

30/07/2015 11,6 129,0 141,0 0,3 0,4 0,1 0,6 22,6 N.A. N.A. N.A. N.A. N.A. N.A. N.A. N.A. N.A.

01/10/2015 27,3 25,0 39,8 0,5 0,1 0,1 0,2 11,5 0,1 N.A. 466,0 13500,0 N.A. N.A. N.A. N.A. N.A.

20/10/2015 21,4 70,0 91,4 1,5 0,1 0,1 0,1 19,8 0,1 N.A. 351,0 4100,0 N.A. N.A. N.A. N.A. N.A.

09/05/2017 <10,0 65,6 65,6 0,2 0,1 0,1 0,1 9,3 <0,05 4560,0 413,0 4640,0 238,0 0,1 12,1 1,1 133,0

07/08/2017 <10,0 <25,0 0,0 0,1 0,1 0,1 0,0 9,3 <0,05 5360,0 445,0 4640,0 238,0 0,1 12,1 1,1 133,0

15/11/2012 370,0 <25 383,0 0,9 0,1 0,1 10,9 32,0 <0,11 N.A. 890,0 1170,0 N.A. N.A. N.A. N.A. N.A.

31/01/2013 153,0 <25 166,0 4,8 5,2 0,3 5,1 126,0 <0,11 N.A. N.A. N.A. N.A. N.A. N.A. N.A. N.A.

28/02/2013 810,0 <25 823,0 9,7 58,0 0,5 12,7 121,0 <0,11 N.A. 1,6 <10 N.A. N.A. N.A. N.A. N.A.

03/04/2013 N.A. N.A. 1050,0 6,2 56,0 0,5 10,7 53,0 <0,11 N.A. N.A. N.A. N.A. N.A. N.A. N.A. N.A.

10/05/2013 314,0 <25 327,0 8,1 35,0 0,5 4,5 73,0 <0,11 N.A. N.A. N.A. N.A. N.A. N.A. N.A. N.A.

31/05/2013 100,0 <25 113,0 6,8 0,1 0,1 0,0 105,0 <0,11 N.A. 0,7 <10 N.A. N.A. N.A. N.A. N.A.

19/07/2013 104,0 <25 117,0 6,7 10,9 1,4 0,9 71,0 <0,11 N.A. N.A. N.A. N.A. N.A. N.A. N.A. N.A.

06/09/2013 42,0 <25 54,5 6,6 11,8 0,6 1,7 135,0 <0,11 N.A. 6,9 <10 N.A. N.A. N.A. N.A. N.A.

30/10/2013 60,0 25,0 72,5 7,3 9,1 1,2 0,6 139,0 0,1 N.A. N.A. N.A. N.A. N.A. N.A. N.A. N.A.

27/11/2013 56,0 47,0 103,0 7,5 11,8 1,2 1,0 129,0 0,2 N.A. N.A. N.A. N.A. N.A. N.A. N.A. N.A.

10/01/2013 19,1 25,0 31,6 3,1 1,5 1,9 0,9 159,0 0,1 N.A. 111,0 10,0 N.A. N.A. N.A. N.A. N.A.

28/02/2014 10,0 25,0 17,5 2,8 0,5 0,3 0,2 75,0 0,1 N.A. N.A. N.A. N.A. N.A. N.A. N.A. N.A.

28/03/2014 10,0 25,0 17,5 1,3 0,4 0,1 0,3 71,0 0,1 N.A. N.A. N.A. N.A. N.A. N.A. N.A. N.A.

09/05/2014 10,0 25,0 17,5 0,5 0,1 0,1 0,0 135,0 0,1 N.A. N.A. N.A. N.A. N.A. N.A. N.A. N.A.

22/01/2015 10,0 25,0 17,5 0,1 0,1 0,1 0,3 62,0 0,1 20,0 28,2 10,0 N.A. N.A. N.A. N.A. N.A.

30/04/2015 10,0 25,0 17,5 0,2 0,1 0,1 0,0 206,0 N.A. N.A. N.A. N.A. N.A. N.A. N.A. N.A. N.A.

28/05/2015 10,0 73,0 78,0 0,1 0,1 0,1 0,0 102,0 0,1 N.A. 178,0 150,0 N.A. N.A. N.A. N.A. N.A.

30/07/2015 11,6 129,0 141,0 0,3 0,4 0,1 0,6 110,0 N.A. N.A. N.A. N.A. N.A. N.A. N.A. N.A. N.A.

01/10/2015 24,7 81,0 106,0 0,2 0,2 0,1 0,3 115,0 0,1 N.A. 441,0 10,0 N.A. N.A. N.A. N.A. N.A.

20/10/2015 12,4 188,0 200,0 0,1 0,1 0,1 0,0 55,0 0,1 N.A. 680,0 10,0 N.A. N.A. N.A. N.A. N.A.

09/05/2017 22,3 35,7 58,0 0,1 0,1 0,2 0,3 117,0 <0,05 576,0 856,0 683,0 289,0 <0,10 8,7 2,0 <5

07/08/2017 21,7 <25,0 21,7 0,4 0,1 0,1 0,1 68,3 <0,05 1070,0 929,0 1380,0 361,0 <0,10 2,6 1,5 44,0

14/11/2012 <10 <25 17,5 <0,08 <0,06 0,3 <0,04 <1 <0,11 N.A. 64,3 22,8 N.A. N.A. N.A. N.A. N.A.

06/02/2013 N.A. N.A. <10 <0,1 <0,1 <0,1 N.A. 1,5 <0,1 N.A. N.A. N.A. N.A. N.A. N.A. N.A. N.A.

22/04/2013 N.A. N.A. 16,0 <0,1 <0,1 <0,1 N.A. 4,3 <0,1 N.A. N.A. N.A. N.A. N.A. N.A. N.A. N.A.

01/08/2013 N.A. N.A. <10 <0,1 <0,1 <0,1 N.A. 4,6 <0,1 N.A. N.A. N.A. N.A. N.A. N.A. N.A. N.A.

31/10/2013 N.A. N.A. 13,0 <0,1 <0,1 <0,1 N.A. 0,9 <0,1 N.A. N.A. N.A. N.A. N.A. N.A. N.A. N.A.

22/01/2015 10,0 25,0 17,5 0,1 0,1 0,1 0,0 7,2 N.A. N.A. N.A. N.A. N.A. N.A. N.A. N.A. N.A.

09/05/2017 <10,0 173,0 173,0 <0,05 <0,05 <0,05 <0,04 2,4 <0,05 1690,0 214,0 2120,0 93,0 <0,10 <0,10 1,4 601,0

08/08/2017 <10,0 176,0 176,0 <0,05 <0,05 <0,05 <0,04 3,7 <0,05 1810,0 383,0 1710,0 155,0 0,1 0,5 1,2 32,0

117 Excess of parameter compared with CSR limits

1690 Excess of other parameters compared with CSC limits

N.A. not analyzed

PZ.83-6

PZ.83-7

PZ.83-8

Table 4: Groundwater analytical results 2012 - 2017 AECOM

Parameter

Hydrocarbon s C6-C10 n-hexane

Hydrocarbon s C10-C40 n-hexane

Total

Hydrocarbon s n-hexane

Benzene Ethylbenzene Toluene (m+p)-Xylene Styrene MtBE Iron Iron II Manganese Manganese II Nitrates Sulfates

Dissolved

Organic Carbon

(DOC)

Methane u.d.m. μg/l μg/l μg/l μg/l μg/l μg/l μg/l μg/l μg/l μg/l μg/l μg/l μg/l μg/l μg/l μg/l μg/l

CSR, Adr 2014 - - 474,8 1,4 67,8 20,3 13,6 54,3 -- -- -- -- -- -- -- -- --

CSC D. Lgs. 152/06 - - 350 1 50 15 10 40 (limite ISS) 25 200 50 - -- -- 250 -- --

Contaminants of interest Other Parameters Geochemical Indicators

Well ID

14/11/2012 <10 <25 17,5 <0,08 <0,06 0,5 0,1 1,4 <0,11 N.A. 131,0 585,0 N.A. N.A. N.A. N.A. N.A.

06/02/2013 N.A. N.A. <10 <0,1 <0,1 <0,1 N.A. 14,0 <0,1 N.A. N.A. N.A. N.A. N.A. N.A. N.A. N.A.

22/04/2013 N.A. N.A. <10 <0,1 <0,1 <0,1 N.A. 8,3 <0,1 N.A. N.A. N.A. N.A. N.A. N.A. N.A. N.A.

01/08/2013 N.A. N.A. <10 <0,1 <0,1 <0,1 N.A. 15,0 <0,1 N.A. N.A. N.A. N.A. N.A. N.A. N.A. N.A.

31/10/2013 N.A. N.A. <10 <0,1 <0,1 <0,1 N.A. 14,0 <0,1 N.A. N.A. N.A. N.A. N.A. N.A. N.A. N.A.

22/01/2015 10,0 25,0 17,5 0,1 0,1 0,1 0,0 2,4 N.A. N.A. N.A. N.A. N.A. N.A. N.A. N.A. N.A.

09/05/2017 <10,0 35,0 35,0 <0,05 <0,05 <0,05 <0,04 0,3 <0,05 2380,0 48,9 3540,0 108,0 <0,10 0,2 1,3 1490,0

08/08/2017 <10,0 <25,0 0,0 <0,05 <0,05 <0,05 <0,04 1,2 <0,05 1600,0 140,0 1230,0 <10,0 <0,10 1,0 1,3 80,0

14/11/2012 <10 <25 17,5 0,1 0,1 0,8 0,3 <1 <0,11 N.A. 179,0 22,3 N.A. N.A. N.A. N.A. N.A.

06/02/2013 N.A. N.A. <10 <0,1 <0,1 <0,1 N.A. 0,3 <0,1 N.A. N.A. N.A. N.A. N.A. N.A. N.A. N.A.

22/04/2013 N.A. N.A. <10 <0,1 <0,1 0,4 N.A. 0,4 <0,1 N.A. N.A. N.A. N.A. N.A. N.A. N.A. N.A.

01/08/2013 N.A. N.A. <10 <0,1 <0,1 <0,1 N.A. 0,5 <0,1 N.A. N.A. N.A. N.A. N.A. N.A. N.A. N.A.

31/10/2013 N.A. N.A. <10 <0,1 <0,1 <0,1 N.A. 0,2 <0,1 N.A. N.A. N.A. N.A. N.A. N.A. N.A. N.A.

28/02/2014 10,0 25,0 17,5 0,1 0,1 0,1 0,0 3,1 0,1 N.A. N.A. N.A. N.A. N.A. N.A. N.A. N.A.

22/01/2015 10,0 25,0 17,5 0,1 0,1 0,1 0,0 1,0 N.A. N.A. N.A. N.A. N.A. N.A. N.A. N.A. N.A.

09/05/2017 <10,0 135,0 135,0 <0,05 <0,05 <0,05 0,1 0,2 <0,05 984,0 62,0 1420,0 60,8 0,4 4,8 1,3 356,0

08/08/2017 <10,0 <25,0 0,0 <0,05 <0,05 <0,05 <0,04 0,2 <0,05 695,0 55,7 606,0 <10,0 0,4 7,1 0,9 1060,0

14/11/2012 <10 <25 17,5 <0,08 <0,06 0,4 0,1 <1 <0,11 N.A. 990,0 2310,0 N.A. N.A. N.A. N.A. N.A.

21/12/2012 <10 <25 17,5 <0,08 <0,06 <0,06 <0,04 <1 <0,11 N.A. N.A. N.A. N.A. N.A. N.A. N.A. N.A.

31/01/2013 <10 <25 17,5 <0,08 0,3 0,1 0,8 <1 <0,11 N.A. N.A. N.A. N.A. N.A. N.A. N.A. N.A.

28/02/2013 <10 <25 17,5 <0,08 0,1 <0,06 0,2 1,7 <0,11 N.A. 466,0 710,0 N.A. N.A. N.A. N.A. N.A.

03/04/2013 <10 <25 17,5 <0,08 <0,06 <0,06 0,2 2,5 <0,11 N.A. N.A. N.A. N.A. N.A. N.A. N.A. N.A.

10/05/2013 <10 <25 17,5 0,3 0,5 0,3 0,7 8,1 <0,11 N.A. N.A. N.A. N.A. N.A. N.A. N.A. N.A.

31/05/2013 <10 <25 17,5 <0,08 0,5 <0,06 0,9 3,9 <0,11 N.A. 634,0 3600,0 N.A. N.A. N.A. N.A. N.A.

19/07/2013 <10 <25 17,5 0,3 0,3 0,4 0,3 5,5 <0,11 N.A. N.A. N.A. N.A. N.A. N.A. N.A. N.A.

06/09/2013 12,2 <25 24,7 0,2 2,3 0,3 1,9 2,4 <0,11 N.A. 530,0 3070,0 N.A. N.A. N.A. N.A. N.A.

30/10/2013 10,0 25,0 17,5 0,1 0,1 0,1 0,0 1,0 0,1 N.A. N.A. N.A. N.A. N.A. N.A. N.A. N.A.

27/11/2013 10,0 26,6 31,6 0,1 0,1 0,1 0,0 1,1 0,1 N.A. N.A. N.A. N.A. N.A. N.A. N.A. N.A.

10/01/2014 10,0 25,0 17,5 0,1 0,1 0,5 0,2 1,0 0,1 N.A. 1040,0 1870,0 N.A. N.A. N.A. N.A. N.A.

28/03/2014 10,0 25,0 17,5 0,1 0,1 0,1 0,0 5,7 0,1 N.A. N.A. N.A. N.A. N.A. N.A. N.A. N.A.

09/05/2014 10,0 25,0 17,5 0,1 0,1 0,1 0,0 4,6 0,1 N.A. N.A. N.A. N.A. N.A. N.A. N.A. N.A.

22/01/2015 10,0 25,0 17,5 0,1 0,1 0,1 0,0 15,0 0,1 3700,0 437,0 2650,0 N.A. N.A. N.A. N.A. N.A.

30/04/2015 10,0 25,0 17,5 0,1 0,1 0,1 0,0 31,8 N.A. N.A. N.A. N.A. N.A. N.A. N.A. N.A. N.A.

28/05/2015 10,0 26,0 31,0 0,1 0,1 0,1 0,1 16,0 0,1 N.A. 636,0 10100,0 N.A. N.A. N.A. N.A. N.A.

30/07/2015 13,8 58,0 71,8 0,1 0,7 0,1 1,0 9,0 N.A. N.A. N.A. N.A. N.A. N.A. N.A. N.A. N.A.

01/10/2015 10,0 25,0 17,5 0,1 0,1 0,1 0,1 3,2 0,1 N.A. 860,0 13,0 N.A. N.A. N.A. N.A. N.A.

20/10/2015 10,0 97,0 102,0 0,1 0,1 0,1 0,0 4,0 0,1 N.A. 760,0 4000,0 N.A. N.A. N.A. N.A. N.A.

09/05/2017 <10,0 52,0 52,0 <0,05 <0,05 <0,05 0,0 4,6 <0,05 4400,0 506,0 5450,0 243,0 <0,10 7,2 1,2 42,0

08/08/2017 <10,0 <25,0 0,0 <0,05 <0,05 <0,05 <0,04 2,7 <0,05 5850,0 566,0 4430,0 63,9 <0,10 8,6 1,1 10,0

117 Excess of parameter compared with CSR limits

1690 Excess of other parameters compared with CSC limits

N.A. not analyzed

PZ.83-10

PZ.83-11

PZ.83-12

Table 4: Groundwater analytical results 2012 - 2017 AECOM

Parameter

Hydrocarbon s C6-C10 n-hexane

Hydrocarbon s C10-C40 n-hexane

Total

Hydrocarbon s n-hexane

Benzene Ethylbenzene Toluene (m+p)-Xylene Styrene MtBE Iron Iron II Manganese Manganese II Nitrates Sulfates

Dissolved

Organic Carbon

(DOC)

Methane u.d.m. μg/l μg/l μg/l μg/l μg/l μg/l μg/l μg/l μg/l μg/l μg/l μg/l μg/l μg/l μg/l μg/l μg/l

CSR, Adr 2014 - - 474,8 1,4 67,8 20,3 13,6 54,3 -- -- -- -- -- -- -- -- --

CSC D. Lgs. 152/06 - - 350 1 50 15 10 40 (limite ISS) 25 200 50 - -- -- 250 -- --

Contaminants of interest Other Parameters Geochemical Indicators

Well ID

14/11/2012 <10 <25 17,5 <0,08 0,1 0,6 0,2 <1 <0,11 N.A. 652,0 915,0 N.A. N.A. N.A. N.A. N.A.

21/12/2012 <10 <25 17,5 <0,08 <0,06 <0,06 <0,04 3,2 <0,11 N.A. N.A. N.A. N.A. N.A. N.A. N.A. N.A.

31/01/2013 32,0 <25 44,5 0,1 0,3 0,1 0,8 1,5 <0,11 N.A. N.A. N.A. N.A. N.A. N.A. N.A. N.A.

28/02/2013 16,3 <25 28,8 <0,08 <0,06 <0,06 <0,04 2,1 <0,11 N.A. 430,0 580,0 N.A. N.A. N.A. N.A. N.A.

03/04/2013 66,0 <25 78,5 <0,08 <0,06 <0,06 0,2 1,0 <0,11 N.A. N.A. N.A. N.A. N.A. N.A. N.A. N.A.

10/05/2013 <10 <25 17,5 <0,08 <0,06 <0,06 <0,04 1,8 <0,11 N.A. N.A. N.A. N.A. N.A. N.A. N.A. N.A.

31/05/2013 <10 <25 17,5 <0,08 <0,06 <0,06 <0,04 1,8 <0,11 N.A. 263,0 980,0 N.A. N.A. N.A. N.A. N.A.

19/07/2013 <10 <25 17,5 0,3 0,3 0,3 0,3 2,0 <0,11 N.A. N.A. N.A. N.A. N.A. N.A. N.A. N.A.

06/09/2013 <10 <25 17,5 <0,08 0,4 <0,06 <0,04 1,6 <0,11 N.A. 558,0 2270,0 N.A. N.A. N.A. N.A. N.A.

30/10/2013 10,0 25,0 17,5 0,7 0,6 0,1 0,4 1,0 0,1 N.A. N.A. N.A. N.A. N.A. N.A. N.A. N.A.

27/11/2013 10,0 25,0 17,5 0,1 0,1 0,1 0,0 1,2 0,1 N.A. N.A. N.A. N.A. N.A. N.A. N.A. N.A.

09/05/2014 10,0 25,0 17,5 0,1 0,1 0,1 0,0 2,1 0,1 N.A. N.A. N.A. N.A. N.A. N.A. N.A. N.A.

22/01/2015 10,0 25,0 17,5 0,1 0,1 0,1 0,0 1,0 0,1 428,0 339,0 410,0 N.A. N.A. N.A. N.A. N.A.

30/04/2015 10,0 25,0 17,5 0,1 0,1 0,1 0,0 1,0 N.A. N.A. N.A. N.A. N.A. N.A. N.A. N.A. N.A.

30/07/2015 16,6 28,0 44,6 0,1 0,6 0,1 0,9 0,6 N.A. N.A. N.A. N.A. N.A. N.A. N.A. N.A. N.A.

01/10/2015 10,0 25,0 17,5 0,1 0,3 0,1 0,4 0,6 0,1 N.A. 160,0 1160,0 N.A. N.A. N.A. N.A. N.A.

20/10/2015 11,7 155,0 167,0 0,1 0,1 0,1 0,0 0,5 0,1 N.A. 121,0 1400,0 N.A. N.A. N.A. N.A. N.A.

08/05/2017 <10,0 232,0 232,0 <0,05 <0,05 <0,05 <0,04 0,6 <0,05 1490,0 142,0 2230,0 107,0 <0,10 3,9 1,4 <5

08/08/2017 <10,0 <25,0 0,0 <0,05 <0,05 <0,05 <0,04 0,5 <0,05 1370,0 104,0 1180,0 <10,0 <0,10 4,1 0,9 14,0

06/02/2013 N.A. N.A. 34,0 0,2 <0,1 <0,1 N.A. 1,2 <0,1 N.A. N.A. N.A. N.A. N.A. N.A. N.A. N.A.

22/04/2013 N.A. N.A. 22,0 <0,1 <0,1 <0,1 N.A. 2,0 <0,1 N.A. N.A. N.A. N.A. N.A. N.A. N.A. N.A.

01/08/2013 N.A. N.A. 77,0 <0,1 <0,1 <0,1 N.A. 1,0 <0,1 N.A. N.A. N.A. N.A. N.A. N.A. N.A. N.A.

31/10/2013 N.A. N.A. 16,0 <0,1 <0,1 <0,1 N.A. 0,5 <0,1 N.A. N.A. N.A. N.A. N.A. N.A. N.A. N.A.

09/05/2017 <10,0 67,7 67,7 0,2 <0,05 <0,05 <0,04 0,4 <0,05 1120,0 99,5 883,0 105,0 <0,10 0,2 1,4 2390,0

08/08/2017 <10,0 <25,0 0,0 0,2 <0,05 <0,05 <0,04 <0,50 <0,05 1240,0 107,0 916,0 <10,0 <0,10 <0,10 1,5 4240,0

15/11/2012 <10 <25 17,5 <0,08 <0,06 <0,06 0,1 <1 <0,11 N.A. 1080,0 75,5 N.A. N.A. N.A. N.A. N.A.

21/12/2012 <10 <25 17,5 <0,08 <0,06 <0,06 <0,04 <1 <0,11 N.A. N.A. N.A. N.A. N.A. N.A. N.A. N.A.

03/04/2013 26,2 <25 38,7 <0,08 0,3 <0,06 <0,04 <1 <0,11 N.A. N.A. N.A. N.A. N.A. N.A. N.A. N.A.

31/05/2013 <10 <25 17,5 <0,08 0,7 <0,06 1,3 <1 <0,11 N.A.