Ba e 94704_aftercare Maintanance Monitoring_sow (3)

PROJECT

Soil remediation of contaminated features in SEK fields

LOCATION

JOB

UNIT

068395

00

SPC. 00-BA-E-94704

Kuwait Technical specification for Rehabilitation after care, Mainteinance and Monitoring

Rev.

Sh. 1 di 26

0

SOIL REMEDIATION OF CONTAMINATED FEATURES IN SEK FIELDS REHABILITATION AFTER CARE, MAINTENANCE AND MONITORING TECHNICAL SPECIFICATION

0

Rev.

Issue

Description

Valentini

Raggi

Buongarzone

May ‘11

Prepared

Checked

Approved

Date

Data file: 170353060.doc This document is the property of Saipem who will safeguard its rights according to the civil and penal provisions of the law.

PROJECT

Soil remediation of contaminated features in SEK fields

LOCATION

Kuwait Technical specification for Rehabilitation after care, Mainteinance and Monitoring

JOB

UNIT

068395

00

SPC. 00-BA-E-94704 Sh. 2 di 26

Rev.

0

CONTENTS

1 DEFINITION AND ABBREVIATION

3

2 GENERAL

4

3 SCOPE OF WORK

7

4 STANDARDS AND REFERENCES

8

5 AFTER CARE AND MAINTENANCE

9

6 MONITORING - SOIL TESTING AND BOTANICAL ASSESMENTS

12

7 REMOVAL

17

8 SUBMITTALS

18

9 QUALITY ASSURANCE

22

10 METHOD OF MEASUREMENT

23

Data file: 170353060.doc This document is the property of Saipem who will safeguard its rights according to the civil and penal provisions of the law.

PROJECT

Soil remediation of contaminated features in SEK fields

LOCATION

Kuwait Technical specification for Rehabilitation after care, Mainteinance and Monitoring

1

JOB

UNIT

068395

00

SPC. 00-BA-E-94704 Sh. 3 di 26

Rev.

0

DEFINITION AND ABBREVIATION Company:

KOC (Kuwait Oil Company)

Contractor:

Saipem Spa

Subcontractor: Any person, firm, partnership, corporation or combination thereof to whom any part of the works is sub contracted by the Contractor in accordance with the terms of the contract Superintendent: The Contractor’s Team Leader Health & Environment or such other person as is notified in writing to the Subcontractor by the Contractor KEPA:

Kuwait Environmental Public Authority

Data file: 170353060.doc This document is the property of Saipem who will safeguard its rights according to the civil and penal provisions of the law.

PROJECT

Soil remediation of contaminated features in SEK fields

LOCATION

Kuwait Technical specification for Rehabilitation after care, Mainteinance and Monitoring

2

JOB

UNIT

068395

00

SPC. 00-BA-E-94704 Sh. 4 di 26

Rev.

0

GENERAL The aim of the project is to carry out remediation and rehabilitation of pits and contaminated soil in the South and East Kuwait Assets in Kuwait. The project is incorporated under Company’s strategy of “Soil Remediation of Contaminated Features in SEK Fields”. Key objectives of the Project include the following: • To repair damage done to the natural landscape as a result of oil operations over many decades; • To rehabilitate a selection of contaminated features to ecologically functioning areas that are able once again to support a typical range of native plant species; • Appropriate Health & Safety protocols and Explosive Ordnance Detection (EOD) appropriate to the associated risks noted with the features; • To recover oil contained within the features (where applicable); • To apply a risk based methodology of remediation concurrent with recognized international protocols adapted to the prevailing environmental conditions in Kuwait; • To initiate soil remediation techniques associated with the nature of the oil contamination existing within the features; • To establish a selection of native plant species to initiate ecosystem recovery and reduce desertification at the selected features; • To monitor and compare the effectiveness of various remediation approaches using the established native plant species as performance indicators. Features to be treated are: Sludge Pits: originate from a number of operational activities associated with Company operations. These pits have generally arisen from the need to dispose of excess crude oil during shutdowns and during work-over operations associated with Gathering Centres (GCs) and well heads. Crude oil from well head work-over operations stored locally in burn pits (disposal pits) is generally disposed of in the Sludge Pits. Oily sludges from the base of tanks from GCs and Tank Farms are also disposed of to these pits. As a consequence of the construction and use of these Sludge Pits soil has been contaminated with crude oil in the vicinity of and underlying each Sludge Pit. Effluent Pits: are disposal pits in which waste process water produced from the initial separation of oil, gas and water is left to evaporate. This initial separation occurs at the Gathering Centres (GCs), thus Effluent Pits are generally positioned no greater than 1,000m from a GC. Each GC has several such pits associated with it. Gatch Pits: are hard pans of calcareous sand or gravel. Gatch is used for construction works throughout Kuwait. Within Company operations it is used for the construction of secondary roads and as a lining material for various operational features. A Gatch Pit is created by open pit mining of the gatch layer near surface. These pits can vary from 2 – 10m in depth from natural ground level.

Data file: 170353060.doc This document is the property of Saipem who will safeguard its rights according to the civil and penal provisions of the law.

PROJECT

Soil remediation of contaminated features in SEK fields

LOCATION

JOB

UNIT

068395

00

SPC. 00-BA-E-94704

Kuwait Technical specification for Rehabilitation after care, Mainteinance and Monitoring

Sh. 5 di 26

Rev.

0

Pits and contaminated soil are shared out among LOT A, LOT B and LOT C located within a Company controlled restricted area. The features in Lot A are shown in Table herein: Feature Type

Estimated Area (m2)

Effluent Pit A1 Effluent Pit A2 Effluent Pit A3 Effluent Pit A4 Effluent Pit A5 Gatch Pit A1 Gatch Pit A2 Sludge Pit A1 Sludge Pit A2

54,591 79,606 47,026 73,020 72,115 145,414 74,640 32,834 124,019

The features in Lot B are shown in Table herein: Feature Type

Estimated Area (m2)

Effluent Pit B1 Effluent Pit B2 Effluent Pit B3 Gatch Pit B1 Gatch Pit B2 Sludge Pit B1 Sludge Pit B2 Contaminated Soil Pile B1

51,138 62,398 47,658 112,443 112,838 13,751 149,249 2,972

The features in Lot C are shown in Table herein: Feature Type Effluent Pit C1 Effluent Pit C2 Effluent Pit C3 Effluent Pit C4 Effluent Pit C5 Effluent Pit C6 Sludge Pit C1 Contaminated Soil Pile C1

Estimated Area (m2) 56,232 69,206 50,941 73,960 58,621 68,859 16,294 13,500

As part of the works; after care, site maintenance and monitoring is required for a limited period to protect the rehabilitation sites, provide support to installed vegetation until establishment and to compare and monitor the effectiveness of remediated soils to harbour a range of native species using a replicated study based approach. The Subcontractor shall ensure that no vehicular movement occurs within and around planting blocks during the After Care and Maintenance period. After plant installation, any essential vehicular movement within the features to facilitate the works herein shall be confined to, at a maximum, either a single access track through the centre, or, a Data file: 170353060.doc This document is the property of Saipem who will safeguard its rights according to the civil and penal provisions of the law.

PROJECT

Soil remediation of contaminated features in SEK fields

LOCATION

Kuwait Technical specification for Rehabilitation after care, Mainteinance and Monitoring

JOB

UNIT

068395

00

SPC. 00-BA-E-94704 Sh. 6 di 26

Rev.

0

single track around the perimeter of the feature, adjacent the fence line. Uncontrolled vehicular movement across the remediated features would damage any emerging plants and also cause compaction of soils. Soil compaction is known to significantly constrain the natural re-vegetation of the desert soils. The Subcontractor shall examine the Site to familiarise themselves with the existing situation. The Subcontractor shall execute the Works in accordance with the Contract based on the latest version of the Company standards, regulations and procedures, the specifications, references and all standards listed 4 below. For the purpose of this section the Subcontractor shall furnish all labour, materials, equipment and incidentals required to carry out the planned Works. This specification only applies to all areas allocated for rehabilitation where native plant species have been installed. This includes a selection of Gatch Pits, Effluent Pits, Sludge Pits and External Reference Areas.

Data file: 170353060.doc This document is the property of Saipem who will safeguard its rights according to the civil and penal provisions of the law.

PROJECT

Soil remediation of contaminated features in SEK fields

LOCATION

Kuwait Technical specification for Rehabilitation after care, Mainteinance and Monitoring

3

JOB

UNIT

068395

00

SPC. 00-BA-E-94704 Sh. 7 di 26

Rev.

0

SCOPE OF WORK The Subcontractor shall: • verify the quality, quantity and application frequency of irrigation water applied to installed vegetation; • verify the maintenance and fate of the installed fence lines and irrigation system tubes; • perform the monitoring of plant survivorship and growth rates; • perform laboratory tests of remediated soil properties which form the rehabilitation study.

Data file: 170353060.doc This document is the property of Saipem who will safeguard its rights according to the civil and penal provisions of the law.

PROJECT

Soil remediation of contaminated features in SEK fields

LOCATION

Kuwait Technical specification for Rehabilitation after care, Mainteinance and Monitoring

4

JOB

UNIT

068395

00

SPC. 00-BA-E-94704 Sh. 8 di 26

Rev.

0

STANDARDS AND REFERENCES •

BS 7370-4: - Grounds maintenance. Recommendations for Maintenance of Soft Landscape.

•

ASTM D4840-99 (2004), “Standard Guide for Sampling Chain-of-Custody Procedures”

•

BS5930 (1999), as amended “Code of Practice for Site Investigations”

•

USEPA - 530-D-02-002 (2002) “RCRA Waste Sampling, Draft Technical Guidance - Planning, Implementation, and Assessment”.

Data file: 170353060.doc This document is the property of Saipem who will safeguard its rights according to the civil and penal provisions of the law.

PROJECT

Soil remediation of contaminated features in SEK fields

LOCATION

Kuwait

AFTER CARE AND MAINTENANCE

5.1

Irrigation water

UNIT

00

SPC. 00-BA-E-94704

Technical specification for Rehabilitation after care, Mainteinance and Monitoring

5

JOB

068395

Sh. 9 di 26

Rev.

0

All irrigation water shall comply with the Kuwait Environmental Public Authority standard: ‘Criteria of treated drainages waste waters used in irrigation’ as stated in Table 5.1.1 below: Table 5.1.1: Criteria of treated drainages waste waters used in irrigation

Data file: 170353060.doc This document is the property of Saipem who will safeguard its rights according to the civil and penal provisions of the law.

PROJECT

Soil remediation of contaminated features in SEK fields

LOCATION

Kuwait Technical specification for Rehabilitation after care, Mainteinance and Monitoring

JOB

UNIT

068395

00

SPC. 00-BA-E-94704 Sh. 10 di 26

Rev.

0

Table 5.1.1 (Cont’d): Criteria of treated drainages waste waters used in irrigation

The Superintendent may, at any time, instruct the Subcontractor to take a sample of the irrigation water and send for laboratory analysis to ensure compliance with the quality standards specified herein. The Subcontractor should anticipate that site irrigation water shall be sampled and sent for laboratory analysis to prove compliance with the above on up to five occasions per feature. 5.1.1

Irrigation Schedule Each individual plant (and trees) shall be watered by filling each plants corresponding vertical irrigation tube (s) until water exits from the top of the tube and, or, extraction holes. Water requirements are approximately 3.92 liters for a high level application tube and approximately 2.2 liters for low level tubes. However, the Subcontractor is responsible for accurately quantifying the water requirements to fill each tube. Plants shall be watered during the growing season only. The growing season is considered within the framework of this contract as 1st November – 31st May inclusive. Plants shall be irrigated across two growing seasons. After installation of plants within the permitted planting periods (15th November to 15th December inclusive) for effluent pits, sludge pits, and external reference areas) and Data file: 170353060.doc

This document is the property of Saipem who will safeguard its rights according to the civil and penal provisions of the law.

PROJECT

Soil remediation of contaminated features in SEK fields

LOCATION

Kuwait Technical specification for Rehabilitation after care, Mainteinance and Monitoring

JOB

UNIT

068395

00

SPC. 00-BA-E-94704 Sh. 11 di 26

Rev.

0

November 1st to January 31st inclusive) for gatch pits and initial surface wetting, all plants shall be watered immediately through their corresponding irrigation tubes. Further irrigation shall then occur fortnightly (bi weekly) during the months of November, December, January, February, March, April and then monthly, within the month May. No watering shall occur during any other Month. Plants shall be watered to this schedule regardless of natural rainfall patterns. The Subcontractor shall ensure minimal damage to any emerging vegetation in and around the vegetation blocks and minimize compaction to the surrounding soils, whilst undertaking irrigation works. 5.2

General Maintenance The Subcontractor shall replace or repair any damaged irrigation tubing as required throughout the Contract period as directed by the Superintendent. The Subcontractor shall maintain the sand fence and gates including repairing any deterioration and damages throughout the Contract period up to the issue of the Certificate of Completion for the Aftercare and Maintenance Portion for each feature, as required by the Superintendent at no extra cost to the Contractor. The Subcontractor shall repaint the fence and / or posts as necessary and whenever instructed by the Superintendent throughout the Contract period up to the issue of the Certificate of Completion for the Aftercare and Maintenance Portion for each feature. The Contractor shall replace any fence slats damaged for any reason on instruction of the Superintendent up to the issue of the Certificate of Completion for the Aftercare and Maintenance Portion for each feature.

5.3

Monitoring of Site Status The Subcontractor shall inspect, on a monthly basis during the growing season, all installed plant material for general plant health including salt burn, sand engulfment, presence of pests, nutrient deficiency etc. This inspection shall be noted in the maintenance log. Contractor shall also make casual inspection during the course of other work of plant health. Any problems shall also be noted in the maintenance log. Upon detection of a plant health, damage or pest problem, the Subcontractor shall immediately contact the Contractor and suggest proper correctional measures to be taken for approval. These measures shall also be noted in the maintenance log. Subcontractor shall be responsible for damage to plants, whether detected or not. Repair of damages might include additional irrigation, amendments, or plant replacement etc as deemed necessary by the Superintendent.

Data file: 170353060.doc This document is the property of Saipem who will safeguard its rights according to the civil and penal provisions of the law.

PROJECT

Soil remediation of contaminated features in SEK fields

LOCATION

Kuwait Technical specification for Rehabilitation after care, Mainteinance and Monitoring

6

JOB

UNIT

068395

00

SPC. 00-BA-E-94704 Sh. 12 di 26

Rev.

0

MONITORING - SOIL TESTING AND BOTANICAL ASSESMENTS All data collected from the Site is the property of the Contractor and is confidential. The Subcontractor shall submit all the specified data and any other field observations directly to the Contractor and shall not publish, present or disseminate any collected data to any other source in any form. Within each feature, the Subcontractor shall allocate numbers to vegetation blocks (1,2,3 etc) and identifying labels to sub plots (high irrigation and low irrigation) within each vegetation block. All data returned to the Contractor shall be clearly numbered in this way so as it is evident which vegetation block, and which sub plot of each block, soil samples and botanical assessments were taken. All soil analysis shall be shall be performed by a competent licensed soils testing laboratory. The Subcontractor shall, as a minimum, undertake soil sampling, analysis and associated botanical assessments within each planting block to the schedule listed below in table 6.1.1. Table 6.1.1: Sampling frequency for soil testing and botanical assessments

Within gatch pits soil sampling shall be undertaken at six locations with each gatch pit. The Superintendant will allocate the six locations. In addition the Subcontractor may cause to be performed, any and all tests necessary to identify or confirm a disease, pest, nutrient, inoculums or salinity problems or any other suspected constraint to plant survivorship problem deemed necessary. 6.1

Soil Sampling Methodology In general, sampling is to be conducted using a systematic composite sampling method as outlined within the “RCRA Waste Sampling, Draft Technical Guidance”. This methodology shall be read in conjunction with the Rehabilitation Site Layouts and the Gatch Pits Site Plans which illustrate quantities and locations of planting block locations. Data file: 170353060.doc

This document is the property of Saipem who will safeguard its rights according to the civil and penal provisions of the law.

PROJECT

Soil remediation of contaminated features in SEK fields

LOCATION

Kuwait Technical specification for Rehabilitation after care, Mainteinance and Monitoring

6.1.1

JOB

UNIT

068395

00

SPC. 00-BA-E-94704 Sh. 13 di 26

Rev.

0

Pre installation of plants Within all planting blocks a composite soil sample shall be taken at two differing soil depths (surface and sub surface) prior to installation of the Plants. Each composite sample shall consist of 10 sub-samples taken from randomised locations within the block. Collect the sample as follows: • • • • •

6.1.2

Depth 1 – Surface; collect 10 sub samples from a depth of 0cm – 25 cm. If using a soil probe, each sub-sample will consist of one (1) core. If using a shovel each sub-sample will consist of approximately 125g of soil. Depth 2 - Sub surface – collect 10 sub samples from a depth of 25 cm – 60 cm. If using a soil probe, each sub-sample will consist of one (1) core. If using a shovel each sub-sample will consist of approximately 125g of soil. Soil material collected from each depth shall be placed into an individual polyethylene bag or clean bucket and mixed thoroughly to produce a compound sample for each depth. From each Composite sample, remove approximately 1 kg of soil and place into a sample bag. Seal the bags with an identification number. A polyethylene bag or glass jar is permitted. The samples will be placed in a cooler with ice packs for transportation to the laboratory. Post installation of plants

The ongoing sampling to the specified schedule after vegetation installation shall mirror the pre installation regime with the following exceptions: • Two (2) Composite samples (surface and sub surface) shall be taken within both sub plots of each vegetation block within effluent pits, sludge pits and reference areas. 6.2

Laboratory Testing The Contractor shall send the sample to an accredited soil testing Laboratory. Composite soil samples shall be analyzed for the following characteristics as listed below in Table 6.1.2.

Data file: 170353060.doc This document is the property of Saipem who will safeguard its rights according to the civil and penal provisions of the law.

PROJECT

Soil remediation of contaminated features in SEK fields

LOCATION

Kuwait Technical specification for Rehabilitation after care, Mainteinance and Monitoring

JOB

UNIT

068395

00

SPC. 00-BA-E-94704 Sh. 14 di 26

Rev.

0

Table 6.1.2: Testing requirements of rehabilitation soil samples Type Physical Analysis

Chemical Analysis

Physical Analysis

Chemical Analysis

Biological Analysis

Constituent Soil Pollution Suite Bulk density (dry) Particle size distribution by sieving and sedimentation PAH 16 Speciated (Naphthalene, Chrysene , Benzo(b)fluoranthene, Benzo(k)fluoranthene, Benzo(a)pyrene, Indeno(123cd)pyrene, Dibenzo(ah)anthracene, Benzo(ghi)perylene, Acenaphthylene, Acenaphthene, Fluorene, Phenanthrene , Anthracene, Fluoranthene, Pyrene, Benz(a)anthracene TPH C6-40 or C10-40 Metals (by ICP) Aluminium, Antimony, Arsenic, Barium, Beryllium, Cadmium, Chromium, Cobalt, Copper, Iron, Lead, Lithium, Magnesium, Manganese, Mercury, Molybdenum, Nickel, Phosphorus, Silica, Selenium, Silver, Strontium, Thallium, Tin, Titanium, Tungsten, Vanadium, Zinc Soil suite Moisture Content Specific Electrical Conductance pH in solution or saturated paste Hydraulic conductivity and water retention (Wind Evaporation Method) Water repellency (WDPT test) Total Organic Carbon (TOC) or SOM, TOM, Total Carbon % Total nitrogen (modified Kjedahl Method) Macronutrients: phosphorus, nitrogen, potassium Chloride (soluble) Bicarbonate Sulfate CaCO3 (Acid Soluble Carbonate) Sodium, magnesium, calcium, boron Sodium Absorption Ratio (SAR) Exchangeable sodium percentage (ESP) Cations Exchange Capacity Microbial Biomass (Fumigation-extraction method) Microbial Biomass (Substrate-induced respiration method)

Unit g/cm³ % ug/kg mg/kg

mg/kg

% mS/cm me/100g soil cm/s % % mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg

103 cfc/g s.u. or mil/100 g dry soil mg CO2/100 g s.u.

All sampling procedures, quality control, sample identification numbering and laboratory analyses shall be undertaken in accordance with the methods and standards in the attached documents (022423.1 Material sampling and in 022423.2 Analysis Specification). 6.3

Botanical Assessments The Subcontractor shall undertake the following assessments to the schedule listed in Table 6.1.1.

Data file: 170353060.doc This document is the property of Saipem who will safeguard its rights according to the civil and penal provisions of the law.

PROJECT

Soil remediation of contaminated features in SEK fields

LOCATION

Kuwait Technical specification for Rehabilitation after care, Mainteinance and Monitoring

6.3.1

JOB

UNIT

068395

00

SPC. 00-BA-E-94704 Sh. 15 di 26

Rev.

0

Gatch Pits The Subcontractor shall, for each planting block, quantify survivorship rates for each species within each planting block. All plants per species, per vegetation block shall be inspected and classified as dead or alive. The Subcontractor shall provide the survivorship rate expressed as a percentage of initial planting numbers per species. The Subcontractor shall, for each planting block, measure the maximum height of all surviving plants and trees, for each species, and supply to the Superintendent the mean height with one standard deviation per species within each block. The Subcontractor shall, for each planting block measure the maximum width of all surviving plants and trees, for each species, and supply to the Superintendent the mean width with one standard deviation per species within each block. The Subcontractor shall undertake the botanical assessments above at six locations with each gatch pit. The Superintendant will allocate the six locations. Each of the designated six locations will be at the same locations as the soil samples.

6.3.2

Effluent Pits, Sludge Pits and External Reference Areas The Subcontractor shall, for each sub plot within each vegetation block, quantify survivorship rates for each species. All plants per species, per block and sub plot shall be inspected and classified as dead or alive at appropriate times of the year. The Subcontractor shall provide the survivorship rate expressed as a percentage of initial planting numbers per species per sub plot. The Subcontractor shall, for each sub plot of each vegetation block measure the maximum height of all surviving plants for each species, and supply to the Superintendent the mean height with one standard deviation per species for all vegetation blocks. The Subcontractor shall, for each sub plot of each vegetation block measure the maximum width of all surviving plants for each species, and supply to the Superintendent the mean width with one standard deviation per species for all vegetation blocks. The Subcontractor shall submit the requested information in the form of interim data report within 25 days of each survey. The survey data from all the survey dates or each feature also be presented and summarized in the Final Rehabilitation Verification Report. The Contractor will also undertake similar and additional ecological surveys of the Sites to monitor the rehabilitation performance. The Subcontractor shall ensure the Contractor has access to the sites at all times in order to conduct these studies. The Superintendent reserves the right to oversee and monitor all assessment and samplings activities undertaken by the Subcontractor at any time.

Data file: 170353060.doc This document is the property of Saipem who will safeguard its rights according to the civil and penal provisions of the law.

PROJECT

Soil remediation of contaminated features in SEK fields

LOCATION

Kuwait Technical specification for Rehabilitation after care, Mainteinance and Monitoring

JOB

UNIT

068395

00

SPC. 00-BA-E-94704 Sh. 16 di 26

Rev.

0

In the event of discrepancies between survey results from the Subcontractor and Contractor then the Contractor’s survey data shall prevail.

Data file: 170353060.doc This document is the property of Saipem who will safeguard its rights according to the civil and penal provisions of the law.

PROJECT

Soil remediation of contaminated features in SEK fields

LOCATION

Kuwait Technical specification for Rehabilitation after care, Mainteinance and Monitoring

7

JOB

UNIT

068395

00

SPC. 00-BA-E-94704 Rev.

Sh. 17 di 26

0

REMOVAL At completion of the Aftercare and Maintenance Period the subcontractor shall extract and remove all the irrigation tubes from Company property and deliver them to an appropriate recycling facility. Care shall be taken not to cause harm to the surrounding plants during removal of irrigation tubes. Care shall be taken not to overly compact soil in and around the planting blocks. Vehicular movement across such areas to collect the tubes is not permitted. Tubes shall be removed by hand pulling utilising the above- surface predrilled rod holes. The holes remaining after irrigation tube removal shall be loosely backfilled with surrounding soil. The Subcontractor shall leave the sand fencing in place at the end of the Contract. The Subcontractor shall clean up all areas on a regularly scheduled basis or whenever deemed necessary by the Superintendent, as well as upon completion of the work before acceptance and during the guarantee period.

Data file: 170353060.doc This document is the property of Saipem who will safeguard its rights according to the civil and penal provisions of the law.

PROJECT

Soil remediation of contaminated features in SEK fields

LOCATION

Kuwait Technical specification for Rehabilitation after care, Mainteinance and Monitoring

8

SUBMITTALS

8.1

Aftercare and Maintenance Verification Report

JOB

UNIT

068395

00

SPC. 00-BA-E-94704 Sh. 18 di 26

Rev.

0

The report shall include a detailed account of all activities undertaken: • Timings, application rates and chemical composition of water applied during irrigation; • Comparative survivorship rates and average height per species at the specified schedules; • Lessons learnt and recommendations for similar rehabilitation projects in the future; • Other Site maintenance activities undertaken including the timings and locations of such activities to include:  Fence maintenance and removal at completion of the Works;  Removal of litter as required;  The location, timings, methods and application rates of any further soil amendments undertaken or other actions undertaken to ensure the survival of vegetation during the Contract period. The Aftercare and Maintenance Verification Report shall be provided for review and approval of Superintendent within twentyfive (25) days of completion of the aftercare and maintenance works. 8.2

Final Rehabilitation Verification Report The report shall include a detailed “as built” account for each feature with associated shop drawings illustrating the timings and extent of all rehabilitation actions undertaken and, as a minimum: • Shop drawings illustrating final planting layouts upon completion of replanting; • Total numbers of plants, installed within each vegetation block; • Break down of plants installed per species and average plant height per species within each vegetation block; • Exact installation dates of each vegetation block; • Exact dates of initial irrigation watering per vegetation block. The Rehabilitation Verification Report for each feature shall be provided for review and approval of Contractor and Superintendent within twentyfive (25) days of completion of rehabilitation works.

8.3

Requests for inspection of works The Subcontractor shall submit a formal inspection notification to the Superintendent requesting inspection by the Contractor of the irrigation of the Site. This inspection notification shall be submitted at least five (5) calendar days prior to the first irrigation event in each growing season and in accordance with Contract Schedules. The Subcontractor shall with this notification supply a method statement detailing the approach to delivering water to the irrigation system and a schedule detailing the order Data file: 170353060.doc

This document is the property of Saipem who will safeguard its rights according to the civil and penal provisions of the law.

PROJECT

Soil remediation of contaminated features in SEK fields

LOCATION

Kuwait Technical specification for Rehabilitation after care, Mainteinance and Monitoring

JOB

UNIT

068395

00

SPC. 00-BA-E-94704 Sh. 19 di 26

Rev.

0

and locations of planting blocks that are to be irrigated clearly stating the start and end dates for each block for approval by the Superintendent. The Subcontractor shall submit a formal inspection notification to the Superintendent requesting inspection by the Contractor of both the ongoing rehabilitation soil sampling, and botanical assessments (periodical monitoring of plant survivorship and growth rates). This inspection notification shall be submitted at least five (5) calendar days prior to the first soil sampling and botanical assessment event in each growing season and in accordance with Contract Schedules. The Subcontractor shall with this notification supply a proposed schedule detailing the dates upon which all following soil sampling and botanical assessments events shall be undertaken for each planting block for approval, and to allow inspection by the Superintendent. Within the effluent pits, sludge pits and external reference areas the Superintendent reserves the right to adjust the proposed schedule of soil sampling, botanical assessments and irrigation application to ensure consistency across the rehabilitation sites and facilitate a comparative study. The Subcontractor shall submit a formal inspection notification to the Superintendent requesting inspection of the Contractor of the irrigation tube removal from the Site. This inspection notification shall be submitted at least five (5) calendar days prior to the inspection and in accordance with Contract Schedules. Before commencement of Works the Subcontractor shall submit a description of sampling methods/procedures to be implemented for approval by the Superintendent. 8.4

Maintenance Log The Subcntractor shall keep an on-Site maintenance log and shall record daily all operations performed. Copies of the daily work sheets log shall be sent monthly to the Superintendent. For each rehabilitation feature this log shall include: • Materials used including unit quantity, total quantity, locations and application dates and rates of applied irrigation water or any soil amendments or actions undertaken for each planting block. • Repair work performed including any irrigation tube replacements, fence repairs and other incidental maintenance activities. • Field observations or method statements from monthly site walkovers and any laboratory data demonstrating compliance of irrigation water quality with the specifications contained herein. Any directions from Superintendent and course of action taken. • A log stating dates of all required tests, inspections, soil sampling and botanical assessments undertaken as outlined in these specifications. • Any other documentation necessary to provide a clear, traceable maintenance procedure. Data file: 170353060.doc

This document is the property of Saipem who will safeguard its rights according to the civil and penal provisions of the law.

PROJECT

Soil remediation of contaminated features in SEK fields

LOCATION

UNIT

00

SPC. 00-BA-E-94704

Kuwait Technical specification for Rehabilitation after care, Mainteinance and Monitoring

8.5

JOB

068395

Sh. 20 di 26

Rev.

0

Certificates The Subcontractor shall certify that the water complies with the maximum values stated in the Kuwait Environment Public Authority ‘Criteria of treated drainages waste waters used in irrigation’ (see table 8.5.1). Table 8.5.1. - Criteria of treated drainages waste waters used in irrigation. Constituent

Colour pH Temperature Electrical Conductivity Biological Oxygen Demand Chemical Oxygen Demand Oil / grease Total Suspended Solids Total Soluble Solids Phosphate Ammonia Nitrate Total Kaldal Nitrogen Total NitrogenTotal Recoverable Phenol Fluorides Sulfides Chlorine Dissolved Oxygen Turbidity Floatables Aluminum Arsenic Barium Boron Beryllium Cadmium Cyanides Cromium Nickel Mercury Cobalt Iron Antimony Copper Selenium Manganese Zinc Lead Lithium

Symbol

Unit

Kuwait EPA Criteria of treated drainage wastes water used in irrigation (Maximum Limit)

pH EC BOD COD TSS PO4 NH3-N NO3 mg/L mg/L F S Cl2 DO

- 6.5-8.5 - oC ds/m mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L

Al As Ba B Br Cd Cn Cr Ni Hg Co Fe Sb Cu

mg/L mg/L mg/L NTU mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L

Mn Zn Pb Li

mg/L mg/L mg/L mg/L -

1 20 100 5 15 1500 30 15

1 25 0.1 0.5-1.0 >2 Nil 5 0.1 2 2 0.01

0.15 0.2 0.002 0.2 5 0.2 0.2 2 0.5 Data file: 170353060.doc

This document is the property of Saipem who will safeguard its rights according to the civil and penal provisions of the law.

PROJECT

Soil remediation of contaminated features in SEK fields

LOCATION

Technical specification for Rehabilitation after care, Mainteinance and Monitoring

Mo V Ag

UNIT

00

SPC. 00-BA-E-94704

Kuwait

Molybdenum Vanadium Silver All herbicides Most probable number of total Coliform Most probable number of faecal Coliform Egg parasites Worm parasites

JOB

068395

Sh. 21 di 26

Rev.

0

mg/L mg/L mg/L MP/N/100ml MP/N/100ml

400

MP/N/100ml

20