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CIP EIA Information Requirements: Synthesis of Eskom, B&V, iGas and Sofregaz inputs (22 Feb 2007)

Coega Integrated LNG-to-Power Project (CIP) Environmental Impact Assessment (EIA)

List of Information Requirements for specialist studiesCollated by: Emma Gordge and Paul Lochner, CSIR

DOCUMENT HISTORYDate Context Person providing

inputComments

10 Aug 2006 Original set of info requirements from CSIR to Eskom and iGas

Emma Gordge & Paul Lochner, CSIR

Distributed to Eskom and iGas to provide feedback and inputs by 25 Aug 2006 (priority info) and remainder soonest thereafter.

8 Sept 2006 No info received. Consultants to Eskom and iGas not appointed.

Paul Lochner Inputs expected from Eskom (for CCGT) by 31 Sept 2006; and from iGas for LNG component by 15 October 2006.

15 Nov 2006 Sofregaz appointed. Meeting with CSIR (Paul Lochner), Sofregaz (Pierre Le Verche) and iGas (Steven Makhongela & Mike de Pontes) at CSIR in Port Elizabeth.

Paul Lochner Update to LNG requirements. Prepared schedule of info inputs from Sofregaz and iGas.

20 Dec 2006 Feedback from Eskom based on Black & Veatch (B&V) design inputs

Titus Mathe TM) & Nico Gewers (NG), Eskom

Edits to table from TM and NG.

2 Jan 2007 Set of documents (General requirements and scope of work) with Appendices A to G provided by Eskom

Titus Mathe, Eskom References to this Eskom document (dated 2Jan2007) included in table below.

Late Jan 2007 Contract between Black & Veatch and Eskom was signed by Eskom, enabling B&V to provide inputs

Schedule for provision of inputs from B&V agreed upon between B&V and Eskom. Bulk of inputs due by 16th February 2007.

6 Feb 2007 Meeting between CSIR (PL), Sofregaz (Patrick Monnet & Damien Menard) and iGas (Mike de Pontes & Steven Makhongela) at CSIR in PE

Paul Lochner PL captured feedback and other updates from Sofregaz and iGas in the info table.

22 Feb 2007 Inputs from B&V received via Eskom during mid-February B&V Table updated by Paul Lochner (CSIR)

PURPOSE OF THIS DOCUMENT:

This document is to be used by Eskom, iGas and their consultants, as well as members of the CSIR EIA team, to: (i) check key assumptions; and (ii) source relevant information required for the specialist studies for the EIA.

Note that separate documents with information requirements are provided for the marine discharges and macro-economics specialist studies, due to the very specific inputs for these studies. Information requirements must be addressed for all these documents.

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PART A: GENERAL INFORMATION REQUIREMENTS

TOPIC SPECIFIC INFORMATION REQUIREMENT ESKOM / BLACK & VEATCH RESPONSE

SOFREGAZ / IGAS RESPONSE

1. General Site Layout and Structural Information

a. Detailed site layout plan: Need to confirm that the diagram provided includes the following:

- core power plant facilities - stack(s) and other air emission

sources - liquid fuel storage areas and

pipeline routes- permanent stormwater

retention facilities - water and wastewater

treatment facilities - water supply intake

structure(s) and pipelines - wastewater discharge

outfall(s) and pipelines- property boundary and

fenceline

For CCGT, refer to site plan from B&V

(CGGT Site Layout ). The CCGT site plan contains requested information except liquid pipeline routes. Can identify routing but need clarification on whether on site (tanks to CTG) or off site (tank farm to site) routing is needed. Off site is CDC/NPA responsibility and CDC has identified a pipe services corridor that parallels the transmission lines leaving the CCGT site.

Refer to B&V diagram for location of CCGT stacks . .

See GRSW Appendix G (Eskom) re: water and intake structure.

See GRSW Appendix B and D (Eskom) re: Water and waste water info.

PL: Updated integrated CIP plot plan due from Eskom. Need to add pipeline routes for liquid fuels and on-site diesel tanks.

For LNG facility, refer to integrated plot plan due from Eskom.

Stacks: only one flare is predicted for the terminal. Location to be determined.

No stormwater retention facilities are predicted for the LNG terminal. iGas to arrange with Eskom that B&V prepare overall stormwater plan.

Oily water will be collected and stored in a 300 m3 concrete buffer basin.

Sofregaz not providing any inputs on waste water treatment.

Heights and lateral dimensions of major buildings/structures, including stack height, diameter, and base elevation.

Refer to GRSW Appendix A (Eskom). .

Refer to Sofregaz document “LNG Major structures and buildings” .

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B&V: Dimensions of main structures are: Site elevation 10m Stack height 45 m Stack diameter 8m Fuel Oil Storage Tanks (1

current, 1 future) 34m Diam x 14m High

Demin Water Tanks (1 current, 1 future) 39m Diam x 14m High

Turbine Building Admin Bldg Control Bldg Water Treatment Bldg 80m x 60m

x 20m tall

b. General site planning description including:

- total area of the site- total area of the site to be

covered by buildings and other impervious/hardened surfaces, eg. parking areas.

- total area of pervious surfaces, eg. grassed areas.

- site topography and drainage patterns eg. contour map.

- existing vegetative cover eg. recent aerial photograph (CSIR to ask CDC).

Note from PL: areas can be rounded off the nearest hectare.

B&V Response: Site plan includes existing contours. Total CCGT site including laydown =

45 hectares. CCGT laydown = 20 hectares. Area covered by impervious

surfaces = 5 hectares

Site total area: 16 ha

Area of roofing structures, buildings etc: 4 ha

Area of roads and paved areas not finalized. Estimate pervious surfaces approx 12 ha. Drainage along the route and around equipment only.

2. Details of Planned Construction

a. Duration of planned construction activities

See GRSW Appendix C , Project Schedule (Eskom).

B&V Response: CCGT construction activities are 24 months and startup and

Total construction time = 42 months (1/2008 to early 2011), including full commissioning of LNG supply. Actual construction time is 36 months. (Eskom needs 800MW by July 2011)

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testing is an additional 6 months (i.e. 30 months total).

b. Clarify whether the land owner(s) (i.e. Transnet/CDC) will undertake any site preparations before the proponents commence construction, eg. level and clear the site and build the access road.

B&V Response: No work planned by Transnet or CDC.

No

c. Description of planned construction activities, eg. blasting, drilling, scrapping, piling, clearing, excavation, etc.

B&V Response: No blasting expected. Clearing and grubbing. Significant excavation to lower site to 10 meters elevation. Piling beneath major structures and tanks is likely. Some trenching for buried pipe. Intake structure will require sheet piling and dewatering. Results form the geotechnical testing is needed to confirm these assumptions.

Response from Sofregaz: Do not expect the need for blasting. Sofregaz cannot provide information on need for piling until the geotechnical studies are completed in July-Sept 2007. These studies are too late to include in the EIA. Therefore, we need to make assumptions about requirements for piling, to inform the noise specialist study.

Key assumptions:i) Piling potentially only needed for main weight-bearing structures, i.e. LNG tanks, BOG compressors area, HP pumps and ORV area (see Sofregaz document “LNG Major structures and buildings” dated 6Feb2007).ii) Piling for LNG tanks could take 4 months per tankiii) noise emissions depend on piling method.

Expected that there will be extra material from excavations that will need to be disposed off.

d. Location of construction laydown area (shown on a map) and intended use for this area following construction.

B&V Response: CCGT laydown on north side of switchyard. Identified on site plan. Returned to natural area after construction.

Refer to layout plan from Sofregaz. Sofregaz to possibly use some of Eskom’s laydown area.

n. Amount of material to be moved, eg. to level the site in preparation for

B&V Response: Based on site elevation of 10 meters

A concern is that it is expected that there will be substantial amounts of

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construction. above msl, the CCGT site, including the switchyard will require: Cut 140,500 m3

Fill 27,000 m3

Net Removed 113,500 m3

The buried circulation water pipe will require an additional 34,000 m3 removal.

Total = 147 500 m3

excess material for off-site disposal. Maximum height that ships can pump LNG to is 10m above msl. Therefore LNG tanks can be a maximum of 10m above msl. Two options for location of LNG facility to be included in EIA:i) 100m setback from high water mark results in 3.6 million m3 of material for disposalii) 60m setback from high water mark results in ….. million m3 of material for disposal (iGas to provide by 28/2/07)

e. Description of construction workforce including:

(1) number of construction workers to be employed, indicating how this changes over the duration of the construction period (eg. numbers per month of construction)

(2) skills levels of workforce, eg. unskilled, semi-skilled, skilled, highly skilled.

(3) number of local workers and number of non-local workers, where “local” refers to the Nelson Mandela Metro. Also provide estimated breakdown of South African and international (expatriate) personnel.

(4) transportation to and from the construction site

(1) Refer to GRSW Appendix D (Eskom).

B&V Response:

(1) Reference to B&V Craft Manpower Loading Document , which indicates craft type, quantity, duration, and sequence breakdown by month.Construction staffing for direct crafts is estimated to peak at about 650 FTE’s (full time equivalents) for a 3x1 combined cycle project.

(2)&(3) Construction workforce will be a combination of unskilled and skilled people. Local workers are typically preferred for most unskilled jobs. Expatriate workers may be needed for skilled positions such as superintendents, quality control, start-up, welders, foremen and other key positions. Key issues related to construction workforce will include: Inclusion and diversity Labor relations

Refer to Sofregaz document “LNG Preliminary Manpower Loading” .

For LNG facilities, Sofregaz roughly estimate that the average number of workers during construction will be 400 to 500, peaking at 700. See document for details.

All supervision jobs are considered highly skilled positions.

Overall for construction, assume that:i) 50% of workers skilled and 50%

unskilled;ii) Unskilled labour sourced locally

and skilled labour sourced locally, nationally or even internationally.

Some tasks, such as making cryogenic concrete, are highly specialized and require skilled labour. Therefore likely to make concrete on site to meet

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Quality control Safety Training.

(4) Bus transportation will most likely be most economical. Temporary residential areas may have to be allocated for construction workforce. Security passes may be needed for workers to enter the IDZ and NPA property.

specific standards.

Transport of personnel: Sofregaz cannot provide information on transportation of workers in time for the EIA. CSIR’s specialist must make assumptions based on information provided on manpower and skills levels.

f. Dust mitigation measures to be implemented during construction

Contractors are required to apply Sufficient ventilation and dust control during the construction of the station.

(4) Eskom: Use busses from a central point to a central point on site.

No specific measures identified at this stage.

g. Sediment/erosion control and stormwater pollution prevention measures to be implemented during construction

B&V Response: Nothing specific. Typical sediment and erosion control methods will likely be employed.

No specific measures identified at this stage.

h. Description of construction methods to be used for shoreline facilities (e.g. cooling water intake and discharge structures) including any pile driving operations, cofferdam construction, cofferdam dewatering, and any planned environmental mitigation

B&V Response: Some pile driving possible but not likely at intake structure. Intake structure will likely require cofferdam and dewatering. Effluent channel will also require cofferdam and dewatering.

Don’t know at this stage.

i. Number and types of vehicles to be used during construction

See GRSW Appendix E on Transportation (Eskom).

B&V Response: Several vehicles will be used during construction of the project. These include: Vehicles to build road and provide

access to the site


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Buses to transport construction people

Trucks to remove material from site levelling and grading

Equipment and commodity material delivery vehicles – tractor trailers, heavy trucks, vans and mini-vehicles as needed

Light cranes, heavy cranes, forklifts 4x4 or SUV’s for internal

transportation within site Fuel delivery trucks (if fuel is not

shipped) during start-up process Individual cars for various stakeholder

personnel

j. Estimated number of trips to site of each type of construction vehicle during each stage of construction

B&V Response: Difficult to predict at this stage. A project construction execution plan needs to be developed to estimate frequency of trips for each vehicle. It can be assumed that vehicle traffic to/from site will be very heavy during construction periods. A traffic control plan will be needed.

Refer to Eskom document General Requirements and Scope of Work .


k. Access route to site during construction (shown on a map) and any planned improvements in site access including new access roads or re-alignment of existing roadways

B&V Response: CDC needs to develop the planned access road to the rear access of the site (away from the port) at the northeast corner of the CCGT site. This is already in their master plan and needs to be finished in time to support start of construction. This will be the primary access for CCGT site construction and will be particularly important for the excavation stage if large quantity of earth must be removed

Understanding is that CDC will build the access road from the north-east to the laydown area and to about 800m from the CIP site.

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from site. The road will need to developed such that the gradient is not very steep to allow heavy vehicles to deliver equipment to the site.

Refer to Eskom document General Requirements and Scope of Work .

l. Provision of water supply and on-site sanitary facilities for construction work force

B&V Response: Water supply to be provided by municipality during construction. Contractor to provide temporary sanitary facilities.

Plan to source potable water from CDC.

m. Collection, storage, and disposal procedures for construction wastes including: solid wastes, excess excavated materials, & sanitary wastewater generated by construction workforce

B&V Response: A detailed environmental control plan (not yet developed) will be needed to address the following issues: Erosion and sedimentation control Storm water pollution prevention plan Chemical inventory tracking and

management Liquid, solid, universal and hazardous

waste management Surface water pollution prevention Air pollution prevention and control Construction debris control Noise pollution control Traffic control Re-Vegetation plan Construction facilities management Personnel training Environmental control plan monitoring

and documentation Subcontractor monitoring Good housekeepingPermit and license compliance plan

The following procedures are anticipated for various waste materials:


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1) Solid wastes – will be disposed off-site via truck.

2) Excess excavated materials – will be disposed off-site via truck.

3) Sanitary wasterwater – will be sent back to IDZ as feasible. Portable toilets will be needed during construction. Assume one urinal and toiler per 20 people. Septic tanks may be used depending on codes and regulations.

4) Miscellaneous other waste may be generated during construction and operation including materials such as:

a. Drinking water bottles.

b. Lumber.

c. Office supplies.

d. Oil.

e. Paint.

f. Prescription medications.

g. Wire rope (except slings).

h. Solvents and cleaning agents.

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i. Trash cans.

j. Varnish.

k. Concrete, rebar, lumber, forms and accessories, miscellaneous local hardware materials

l. Rags, worn equipment parts

m. Office trash

Proper management of solid waste onsite prior to trucking to authorized landfill will ensure no adverse impacts from plant construction and operations.

3. Preliminary process flow diagrams indicating principal process steps for all major items of equipment

Showing a. material balanceb. temperaturec. pressure

The processes and phases include: Liquefied Natural Gas (LNG) import

and re-gasification terminal; Gas-fired combined cycle gas turbine

power plant Liquid fuels import, storage and

utilisation in power plant

Refer to B&V document “Performance Summary and Heat Balances” .

B&V Response: Refer to heat balances, water balances, and PID’s showing the various systems for the power plant that have been developed by B&V during conceptual design.

Refer to Sofregaz document “LNG Heat and material balance” .

4. Descriptive overview of the process

NOTE: CSIR to prepare overall project description based on the information provided to date, and have this reviewed by Eskom, B&V, iGas and Sofregaz.

For example, including the design net turbine output (MW); design net turbine heat rate (Btu/kwh); & expected hours of operation at

Refer to Eskom document General Requirements and Scope of Work .and various documents from B&V.

Refer to Sofregaz document “LNG Main Equipment Description for EIA”

.

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base and part (mid-merit) loads.

5. Description of major components

Note from CSIR: See above comments in section 4. Sections 4 and 5 can be combined.

For example, including:a. turbine generatorsb. steam systems (main, reheat, extraction)c. air emissions control equipmentd. condensate and feedwater systemse. cooling systemsf. planned gas versus diesel operation

Refer to B&V document “CCGT System Descriptions” , as well as Eskom document General Requirements and Scope of Work.

Refer to Sofregaz document “LNG Main Equipment Description for EIA”

.

6. Broadbrush description of plant operation

a. number of staff for plant operation b. training program/levels of skills for plant

operation (eg. unskilled, semi-skilled, skilled, highly skilled)

c. number of subcontracted service providers for operation

d. working hours/shiftse. operating times while running on distillate

fuel (diesel)?

Eskom: Two-shift during liquid operation; three shift during gas operation.

a) LNG terminal is estimated to require at most 60-70 operators.b) No info availablec) Subcontracted services will be used for services such as security, catering, cleaning services and certain maintenance services. At this stage, the number of sub-contracted personnel cannot be estimated.d) Plant is planned to be operated using three shifts of 8 hours each, with a fourth relief shift.e) Eskom to provide response

7. Upset or emergency conditions

a. A list of possible upset or emergency conditions with the expected atmospheric, solid waste and wastewater releases during the construction, commissioning, operational and de-commissioning phases of the CIP.

Note: Eskom and iGas to review the Draft Risk Identification and Assessment Report by Ian Ahrens of Ilitha in December 2006.

B&V Response: Information provided at the end of this document.

An unlikely scenario is that if the CCGT is operating mid-merit, then the gas build-up at the LNG terminal cannot be released to the CCGT continuously. Flaring of LNG during operations may then need to be considered. Main emission would be CO2. Estimate is that 6 tonnes LNG would then be burnt per hour for 47% of the time.

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Expect a continuous gas pilot flare to be burning (15 kg/hour).

An alternative to flaring used in Canada is to vent LNG from the stack. This reduces the visual impact (of flaring) but increases the impacts on the ozone layer and creates a potential methane cloud. (safety issue).

8. Plant Decommissioning

a. anticipated lifespan of plant

b. decommissioning procedures c. land restoration plan

35 year plant life minimum.

No decommissioning procedure or restoration plan at this stage. Most likely scenario will be to evaluate the situation at the end of the plant life.

a) Plant has a minimum lifespan of 35 years. For the commercial business plan, a plant life of 25 years is assumed. In reality, the lifespan is a function of the maintenance of the facilities. The plan is to run the plant for as long as it can function efficiently and safely. There are international examples of similar plants running for over 40 years.

b) Do not have any decommissioning procedures at this stage. No terminal in the world seems to have been completely decommissioned except a small terminal in France in the HAVRE which was a very small terminal of the first generation.

c) Do not know at this stage. The main fluid on the terminal is LNG and the LNG will not create any pollution on the ground.

9. Eskom and iGas’s environmental

a. Provide Eskom and iGas’s company policies on environmental management and sustainable development, which provide their high-level commitments to

Eskom (Nico) to provide. iGas to provide, based on CEF policy.

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policies and standards

environmental management for this project and EIA process.

PART B: SPECIALIST STUDY SPECIFIC INFORMATION REQUIREMENTS

SPECIALIST STUDY INFORMATION REQUIREMENTS ESKOM/BLACK & VEATCH RESPONSE

SOFREGAZ/IGAS RESPONSE

Air Quality and Human Health

1. Process Emissions Data Stack height (m) Stack diameter (m) Geo-reference location (latitude /

longitude or UTM) For all specified pollutants:

o Emission release temperature (K)

o Gas flow rate (Nm3/h) eg. for NOx, CH4, SO2, etc

o Emission rate (g/s)

2. Fugitive Emissions Data (during normal operations) Type of Source (area, volume, point

or line) Dimensions of source (m) Geo-reference location (latitude /

longitude or UTM)

B&V Response:

Information for item 1 provided under separate e-mail from B&V.

Only fugitive emission during normal operation will be diesel vapor emission from storage tank during filling. The tank is atmospheric but can be provided with a combination vacuum pressure relief valve on the exhaust neck to minimize fugitive emissions vs. just an open vent. Vent diameter will likely be 300 mm.

No fugitive emissions expected during normal operations, except 15 kg/hour from pilot flame.

The flare height is anticipated to be up to 60m high. Flare diameter is 30 inches.

The location of the flare has not yet been determined. This location will depend on safety, visual impacts and operational issues (e.g. accessibility). The flare only emits CO2. No SO2 is emitted. Therefore, CSIR to check if the location of the flare is critical in terms of the air emissions modelling to be done by CSIR. If the location were to change, would this require CSIR to re-model the emissions?

Materials Handling and Waste Management

1. Basic mass/volume balance showing the material flows (inputs and outputs) and the respective quantities.

2. Compositions of the main feed streams (LNG and/or liquid fuels).

3. Description of all materials (and their

Refer to B&V “Performance Summary and Heat Balances” .and Water Mass Balance for Distillate Oil and LNG” .. Refer to B&V document “CCGT System Descriptions” and Eskom document General Requirements and Scope of

1) CSIR to check with specialist (S Raghubir that, for purpose of the EIA, the LNG plant can largely be treated as “black box” in terms of materials flows. iGas concerned re: confidentiality of design.

Refer to Sofregaz document “LNG

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quantities) to be used and/or stored on site: water treatment chemicals lubricating and hydraulic oils solvents or other chemical cleaners

4. Description of fuel storage and handling tank capacity and number of tanks tank materials description of secondary

containment and provision of oil/water separators for drainage areas

description level indicators, alarms, and filling systems

description of fuel oil transport to the site (by road or by rail, anticipated number of annual deliveries, anticipated annual consumption)

5. Description and quantification of the solid waste and sludge generated annually by the CIP (during the construction, commissioning, operational and de-commissioning phases), including:

a. waste descriptionb. annual quantitiesc. waste compositionsd. possible re-use, recycling or

disposal options

6. Description of water/wastewater systemsa. water balance diagram indicating

source, quantity, and pre-treatment of water required for various operations and quantity, treatment, and discharge destination of wastewater generated. Diagram

Work .

Source seawater composition from marine biomonitoring report for the Port of Ngqura (NM University report)

Fuel tanks: currently planned as 2 tanks of 13.5 million litres each – to be confirmed.

Additional information provided at the end of this document.

Sanitary wastewater will use the local sewer system.

Heat and Material Balance” .

4) Diesel tank for diesel firewater pump is 10 m3.

5) This detail is not known at this stage, especially for construction. Conditions will be set for the construction contractors regarding waste management. At this stage, iGas and Sofregaz can only indicate the broad categories of waste to be generated during construction (eg. concrete, packaging etc).

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should indicate:- total water supply required

(including seasonal variations)

- +water supply pre-treatment systems (settling basins, water softening, filtration, etc.) and associated wastewater discharges

- demineralization pre-treatment system

- demineralizer regenerant wastewater treatment systems

- oil/water separators- sanitary wastewater

treatment systems.

b. use of chemicals in the various water and wastewater treatment systems including:

- chemical addition for settling basins and/or softening systems

- chemicals used to regenerate ion-exchange resins

- chemicals used in demineralizer system regenerant wastewater neutralization system

c. estimated quality of individual

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waste streams and of the combined wastewater discharge; primary parameters of concern include:

- temperature- pH- total suspended solids- oil and grease- total residual chlorine- total chromium- copper, iron, and zinc

7. Facility wastesa. identification of all waste streams

(and anticipated quantities) including:

- waste oils- water treatment chemical

waste streams- solid wastes

b. describe waste collection and storage on-site

c. describe disposal methodsd. describe planned recycling (if any)e. describe anticipated quality of ash.

Water Consumption and Review of Integrated Water Management

1. For the construction phase; as well as for the operations phase, for all three modes of operation (i.e. 800 MW mid-merit using diesel, 2400 MW baseload using natural gas, and back-up mode of 2400 MW using diesel - CHECK), information is required on:

a. Water use for various types of water (eg. potable water and sea

Types of water use include services water; demin, potable; fire nox control; and cooling water (seawater).

For quantities, refer to mass balance

Additional information provided at the end of this document.

Potable and industrial water will be provided directly from the power plant desalination unit during operation of the LNG terminal.

Construction water use depends if construction is made on or off site.

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water)- Nature of water use- Water source (sea, CDC, etc)- Quality required- Quantity required- Duration of water use- Will desalinization be on-line

prior to construction OR will water be obtained from CDC/NMMM?

b. Wastewater generated e.g. sewage, process wastewater, cooling water, construction wastewater (from excavation, where dewatering may be required): - Nature of discharge- Point of discharge - Quantity discharged - Duration of discharge- Constituents in discharge - Constituents concentration in

discharge- Alternative methods to handle

wastewater- Approval requirements for

discharges (licence/permits)

2. Site Site water balance Will all buildings be erected from 1st

day of operation?

3. Stormwater Stormwater system plans Expected stormwater quality (eg.

analogous data from similar sites) Sources of potential pollutants of

stormwater (eg. fall-out from

(2) B&V Response: All CCGT buildings will be built as part of initial construction.

(3) B&V Response: Additional information for stormwater and treatment facilities addressed at the end of this document.

(3) Eskom response: No on-site stormwater detention facilities planned.

(5) B&V Response: Significant amount of water will be recycled. Please see water mass balance.

CHECK: any update from Ken Galt on what he presented at the workshop in Stellenbosch in August 2006? If not, his Aug2006 information will be used. Eskom (Nico) to confirm.

Estimated construction potable water use is:

i) General water use, based on 300 litres per person per day x 450 people (average) x 36 months of construction; and peaking at 1400 workers on site.

ii) Industrial water for 150 000 tonnes of concrete, i.e. approx 10 000 m3 of industrial water.

iii) Water for hydraulic tests for LNG tanks, which require tanks to be two thirds full. Could use seawater or freshwater. Need approx 110 000 m3 water.

Desalination: construction water to be obtained from CDC. During operations, Eskom to run desalination plant to provide potable water.

No process water from LNG operations.

Dosing and chlorination of seawater: If LNG uses Eskom’s cooling

water, then no need for dosing. If LNG uses its “own” seawater,

then envisage continuous chlorine dose of 2 parts per million (ppm), plus once per day surprise dose of 6 ppm for different species, administered at a random time. Same as Eskom’s planned dosing.

By adding 2 ppm, iGas expect an output chlorine level of 0.5 ppm chlorine.

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atmospheric emissions, spillages on site)

Connections to CDC/NPA stormwater system

Proposed stormwater detention facilities on site, if any

4. Treatment facilities Desalination plant, demineralisation

plant and wastewater treatment facilities

o Water and mass balanceo Capacity o Process descriptiono Chemical usageo Availabilityo Wastes produced (sludge,

brines)

5. Water re-use/recycling Details of any plans regarding:

o Water re-use and recyclingo Wastewater minimizationo Water conservation

Discharges to the marine environment – including impacts on marine ecology

See separate stand alone document on information required for the marine discharges specialist study

Discussion with iGas and Sofregaz: Discharge analysis and concept structure being designed by Sofregaz. PRDW are working on the design for Sofregaz. Flow process still being designed. Delta T output remains the same for different integration options between LNG and CCGT.

Refer to responses from B&V in separate marine study information table.

The hot case is when the power plant is running at full capacity: the volume of seawater that will be rejected by CCGT is 180 438 tons/hr and Delta T is +7° C. (CHECK with B&V)

Risk identification and assessment review

1. Approach to refuelling of LNG vessels in the Port of Ngqura.

2. Will vessels importing diesel for the CIP be

Eskom to review draft risk report (provided to Eskom in January 2007).

Mike de Pontes to review draft report prepared by Ian Ahrens and convey findings from the Sofregaz “Frequency Assessment” performed for the LNG

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refuelled in the Port of Ngqura, and if so, how will this be done?

CSIR sent draft report by Ian Ahrens (Ilitha) on “Risk identification and assessment” to Eskom and iGas to review.

plant.

Vulnerability study

(i.e. a preliminary form of QRA based on the structure of the MHI requirements, using available information).

1. Site Plot Plan (hard copy to scale or ACAD 2000 or R14) showing: true north with LO coordinates nearest neighbours site layout

(Refer also to detailed site layout plan included in Part A, section 1.a.)

2. Piping and Instrument Diagrams (PID) (flammable and explosive hazards only) showing: all equipment instruments alarms and interlocks fragile items flexible, expansion hosing joints PVRV set pressure

.3. Process Description including:

receipts of raw material (i.e. offloaded from ship via pipelines etc)

size of import batches pump capacity and heads frequency of shipping movements storage of raw materials and

chemicals

4. MSDS and full compositions and physical properties of all components on site.

5. Tank and vessel details (flammable or explosive hazards only):

B&V Response: Refer to power plant site plan, PID’s, and system descriptions. No MSDS available at this time. Diesel storage tanks will be single wall carbon steel with containment. No design details available at this time for the tank or containment.

A meeting was held between Mike Oberholzer (CSIR specialist), iGas and Sofregaz on 17 Nov 2006 in JHB to discuss what level of information can be provided to the CSIR specialist by January 2007.

Mike de Pontes met with Mike Oberholzer (19/2/2007) in JHB to discuss and handover the Sofregaz “Frequency Assessment” performed for the LNG plant. Confidential report.

2) Details such as PIDS will not be available in time for EIA.

3) More detailed process description information only available from mid-2007 and too late for EIA specialist studies.

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type design code contents storage pressure & temperature height, diameter working volume nozzle details venting details material of construction inerted / blanketed

6. Tank Containment (bund) details (hard copy to scale or ACAD 2000 or R14) distillate tank farm: bund dimensions contained volume distance to other tanks, plants,

boundaries.

Noise 1. Identify significant noise sources during construction and operation, indicating location of these noise sources on the project layout plan.

2. Provide details on noise reduction measures incorporated into the project planning and design, such as:

a. use of enclosures to minimise noise impacts (provide dimensions of enclosures and materials used)

b. inclusion of international design standards and best practice to reduce noise.

B&V Response: Information provided at the end of this document.

Generally no noise data available at this stage. Specialist must make assumptions.

iGas to approach PRDW to provide marine-related construction noise sources.

Sofregaz to check if any international noise standards will be applied to construction and/or design.

Visual 1. For normal operations and upset conditions, will any gas discharges, water vapour or flames be visible?

B&V Response: Nothing visible during upset conditions. Security lighting will be general lighting around the equipment and personnel access areas. Possibly

1) Only visible emission from LNG plant is the flare (60m above ground level).

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2. Describe the form of security lighting and lighthouses (if any) to be included in the project design.

3. Provide photographs and detailed plans of the position of the development on the landscape as well as of the proposed development. Include x, y and z coordinates. The platform contour is important.

4. If possible, provide 3D visualization images of the project structures.

5. Provide photographs of similar existing tank installations (for LNG tanks and diesel tanks), to use in the photo simulations for the EIA.

along the fence line if needed for security purposes. See power plant site plan for layout. B&V also furnished a plant rendering of just the power plant but it was based on the plant being at elevation 40 meters.

2) Don’t know at this stage.

3) Refer to plat plan.

4) No visualizations done at this stage.

5) Photos of typical facilities provided. Refer to Sofregaz document “Examples of LNG Storage Tanks” .

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Socio-economics 1. Employment & Services (Also refer to general questions on employment and workforce in Part A).

a) Structuring of shifts during operation and number of employees per shift.

b) How the labour force be engaged (eg. permanent suppliers, consultants, contractors).

c) Timeframes of various employment roles during construction.

d) What forms of training will be provided to the different levels of employees? Any during construction? Will local and emerging contractors be used? If so, for which components of the project?

e) Will on-site clinic/emergency facilities be provided? If so, which level of treatment will it be equipped for?

2. Social Responsibility Programme Does iGas have a current Social

Responsibility Programme (SRP) programme?

What form will SRP take in the NMMM (iGas/Eskom)?

B&V Response: Information for item 1 provided at the end of this document.

Eskom (Nico) to address expected quantity of personnel and shift structure during long term plant operation.

1.a) LNG plant is planned to be operated using three shifts of 8 hours each, with a fourth relief shift.

b) Mixture. Services could be sub-contracted such as security etc) See response in section 1

c) Don’t know at this stage.

d) Not determined at this stage. Depends on proficiency, availability and costs.

e) Not determined at this stage. Will meet legal requirements such as OHSA.

2. No policy at this stage. iGas and Eskom to discuss how to address this – coordinated response needed. Intension is to provide trucking of LNG to outlying areas, to support new viable business opportunities.

Heritage assessment 1. Recent colour aerial picture of the site with site boundaries and project footprint super-imposed.

CSIR to ask for this from CDC or specialist to source from Google Earth.

n/a n/a

Macro-economics Refer to separate Excel spreadsheet provided by Global Insight.

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ADDITIONAL INFORMATION (FROM BLACK & VEATCH)

PART A, ITEM 7: UPSET OR EMERGENCY CONDITIONS

No decommissioning of power plant foreseen. No release of solid waste during construction, startup, or operation. Possible lifting of steam safety valves in the event of a turbine trip. Safeties provided with silencers to minimize the noise level. Possible leak of diesel from the storage tanks due to accident. Secondary containment will be provided around the diesel and lube oil

storage tanks. Possible leak of natural gas due to accident. Isolation valves provided to minimize the loss of natural gas. No contamination concern. Fuel

gas should dissipate. Possible overflow of the oil water separator in the event of extremely high rain event. Containment is provided around the oil water

separator to prevent release in the event of a leak. Lubricating oil will be kept in a containment area to prevent contamination in the event of a spill.

PART B

Materials Handling and Waste Management:

Fuel Gas Properties Min MaxPressure Bar abs 38 42Pressure Change Rate bar/sec 0.6Temperature oC 5 8Temperature Change Rate oC/sec 1Hydrocarbon Dewpoint (at 1 – 70 bar) oC - 2Water Dewpoint (at 70 bar) oC - 8

Heating Value (LHV) MJ/kg 49 56Density (at NTP) kg/m3 0.7 0.9Wobbe Index Btu/scf 1398 1437

(at 15oC) MJ/m3 47 54(at 15oC) kWh/Nm3 13.6 15.81

Constituents

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Methane (CH4) mole % 88.2 96.6Ethane (C2H6) mole % 2 6Propane (C3H8) mole % 1 3.9Butane (C4H10) mole % 0.1 1.4Higher Hydrocarbons (C5+) mole % 0.04Hydrogen (H2) ppm 400Helium ppm 400Argon (Ar) mole % 0.005Mercury (Hg) microg/Nm3 0.01Carbon Monoxide (CO) ppm 400Mercaptans (RSH) Mg/Nm3 6Sulphides (H2S & COS) Mg/Nm3 5Sulfur (S) Mg/Nm3 30Nitrogen (N2) mole % 0.01Carbon Dioxide (CO2) mole % 0.025Total Inerts (N2 + Ar + CO2) mole % 0.04Oxygen (O2) mole % 0.01

Contaminants Particulate ppm (wt) < 20Sodium ( Na ) + Potassium ( K ) ppm (wt) < 0.2Vanadium ( V ) (untreated) ppm (wt) < 0.5Lead ( Pb ) ppm (wt) < 1Calcium ( Ca ) ppm (wt) < 2Magnesium ( Mg ) ppm (wt) < 2Other Trace Metals ppm (wt) < 2

Liquid Fuel Properties Higher Heating Value (HHV) MJ/kg > 45.2Lower Heating Value (LHV) MJ/kg > 42.5Density (at 20 oC) kg/l 0.80 minKinematic Viscosity

40 oC cSt 2.2 – 5.3

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Flash Point oC > 62Pour Point oC < - 6Distillation

90% oC < 330Cold Filter Plugging Point

Mar 15 to Sep 30 (winter) oC - 4 maxOct 1 to Mar 14 (summer) oC + 3 max

Acid Number mg KOH/g 0.25 maxConductivity @ 20 C pS/m 100 minOxidation Stability mg/100 ml 2.0 maxVapor Pressure

37.7 oC Bar < 0.002565.5 oC Bar < 0.00880.0 oC Bar < 0.014

Constituents Carbon ( C ) mass % 85 - 87Oxygen ( O ) mass % < 0.1Sulfur ( S ) mass % < 0.05Nitrogen ( N ) mass % < 0.015Hydrogen ( H ) mass % 13 - 15Carbon-Hydrogen Ratio < 6.3Cetane Number > 45

Contaminants Ash Mass % < 0.01Sodium ( Na ) + Potassium ( K ) ppm (wt) < 0.2Vanadium ( V ) (untreated) ppm (wt) < 0.5Lead ( Pb ) ppm (wt) < 0.5Calcium ( Ca ) ppm (wt) < 2Other trace metals ppm (wt) < 2Mercaptans (organic compounds containing SH groups) ppm (wt) < 10Sediment/Total Contamination mg/kg < 25Sediment by Extraction mass % < 0.01Carbon Residue mass % < 0.2

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Water Content mass % <0.05

Power Plant diesel storage will consist of two large tanks for combustion turbine supply and two smaller day tanks for the emergency diesel generator and diesel driven fire pump. The large tanks will be approximately 5,500 cubic meters each. The day tanks will be approximately 10 cubic meters each. The tanks will be carbon steel construction and will be painted. Delivery of diesel to the storage tanks can be done using truck delivery or permanent pipeline from the tank farm on NPA property to the power plant tanks. Eskom is investigating the possibility of delivery by ship to Port Ngqura using a temporary pipe from the port to power plant site in case the tank farm is not completed in time to support power plant startup.

Eskom will need to address expected annual consumption of liquid fuel. It is dependent on expected hours of operation. CTG fuel burn rate is dependent on manufacturer, ambient conditions, and fuel heat content but each CTG will burn approximately 74,000 liters/hr at base load operation. Each CTG will put out approximately 750 MW net. Multiply fuel burn rate by number of CTGs operating and number of hours /or/ multiply burn rate by hours per year of CTG operation at base load. If Eskom has estimate of annual MW send out then multiply burn rate by annual MW/ (750 MW).

Eskom should confirm expected lubricating oil and chemical usage/storage. Typical chemicals on site for process purposes are acid, caustic or phosphate, and ammonia. Typical lubricants on site are miscellaneous greases, and ISO VG 32 & 68 grade oils for equipment, and an ISO VG 100 grade turbine oil. The turbine oil will be by far the largest quantity and will likely be delivered by truck and removed by truck. It will all be in the various turbine lube oil storage tanks and none will be kept in storage. The other oils will probably be stored in quantities of around 100 gallons each.

Solid waste expected to be generated during construction is described in earlier sections. Solid waste during operation is expected to include the following: Sludge from desalination plant sludge treatment (149 metric tons/day with diesel operation and 13 metric tons/day with gas operation when plant is

operational) Worn equipment parts Rags Office waste Bulk commodity materials during outage periods

It is difficult to estimate annual quantities and waste compositions at this time.

Description of proposed water and wastewater treatment systems is included in B&V report and works information package. Seasonal variation is small compared to but a larger variation expected when fuel is switched from diesel to gas. Diesel fuel requires significant quantities of water injection to control NOx emissions.

Desalination system is sized for approximately 3.26 million gallons/day (about 12,400 metric tons/day) of seawater intake

Key liquid waste streams from the CCGT plant include the following: Storm water run-off. Some of the run-off from certain areas will be captured in oily-water separator. The oil in the separator will be pumped out for

disposal off site. Potable water and sewer waste that will be tied to IDZ. Brackish water from seawater RO process going to cooling water discharge channel.

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Once-through cooling water discharge from condenser. CCGT wash water will be captured in a storage tank for disposal off site.

Significant amount of water will be recycled (please see water mass balance)

The following chemicals will be used in water treatment (including desalination) cycle: Sodium hypochlorite Coagulants, anti-scalants and polymers (exact chemicals to be decided by EPC contractor) Sulfuric acid Sodium hydroxide Aqueous ammonia Oxygen

The CCGT facility will not generate any ash. Some oil will be collected in the oil water separator and will be pumped out for disposal off site.

Brine (from sea water reverse osmosis) reject quality is as follows based on older data from Eskom. The higher reject rates are associated with diesel fuel and lower rates with gas fuel. Note that these are just concentrations from SWRO. They will be significantly diluted because SWRO rejects is send to cooling water discharge channel. E.g. SWRO reject flows of 6,000 TPD will mix with cooling water flow of 2.3 million tons/day for diesel fuel.

Estimated SWRO Reject Quality

Max SWRO Reject Rate 6000 MTPDMin SWRO Reject Rate 520 MTPD

Constituent

Seawater Concentration

(g/kg)

SWRO Reject Concentration

@ max flow (mg/l)

SWRO Reject Concentration

@ min flow (mg/l)

Sodium 10.77 17000 15000Magnesium 1.29 2100 1800Calcium 0.4121 670 570Potassium 0.399 650 550Strontium 0.0079 13 11Chloride 19.354 31000 27000Sulphate 2.712 4400 3800Bicarbonate 0.1424 230 200Bromide 0.0673 110 93Fluoride 0.0013 2.1 1.8

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Boron 0.0045 7.3 6.2 -log M -log M -log MHelium 8.8 8.6 8.7Lithium 4.6 4.4 4.5Boron 3.39 3.2 3.2Nitrogen 1.97 1.8 1.8Fluoride 4.17 4.0 4.0Neon 8.2 8.0 8.1Aluminim 7.1 6.9 7.0Silicon 4.1 3.9 4.0Phosphrous 5.7 5.5 5.6Argon 6.96 6.8 6.8Vanadium 7.3 7.1 7.2Chromium 8.2 8.0 8.1Manganese 8.4 8.2 8.3Iron 7.5 7.3 7.4Cobalt 9.1 8.9 9.0Nickel 7.6 7.4 7.5Copper 8.1 7.9 8.0Zinc 4.9 4.7 4.8Astatine 7.3 7.1 7.2Krypton 8.6 8.4 8.5Rubidium 5.85 5.6 5.7Molybdenum 7 6.8 6.9Silver 9.4 9.2 9.3Cadmium 9 8.8 8.9Tin 10 9.8 9.9Antimony 8.7 8.5 8.6Iodine 6.3 6.1 6.2Xenon 9.4 9.2 9.3Caesium 8.5 8.3 8.4Barium 6.8 6.6 6.7Tungsten 9.3 9.1 9.2Gold 10.7 10.5 10.6Mercury 9.8 9.6 9.7Lead 9.7 9.5 9.6Thorium 10.4 10.2 10.3Uranium 7.9 7.7 7.8

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Water Consumption and Review of Integrated Water Management

CCGT will use seawater for cooling purposes, desalination plant (for cycle make-up, potable water and CT injection). Water quantities required are indicated on water mass balance.

Desal plant will not be operational during construction. Water will be required from IDZ/municipality. Desal plant will be operational during plant operation and has been sized to account for CCGT requirements and nominal potable and service water supply to LNG Facility.

Primary waste streams from CCGT are: Storm water run-off. Some of the run-off from certain areas will be captured in oily-water separator Sanitary waste that will be tied to IDZ. Brackish water from seawater RO process going to cooling water discharge channel. Once-through cooling water discharge from condenser.

B&V has assumed cooling water is assumed to be discharged via open canal into surf zone unless there is a fatal flaw from EIA perspective.

Stormwater will run-off into sea. However, the CCGT conceptual design allows for stormwater from certain areas (susceptible to oil contamination) to be captured and sent to oily-water separator to remove the oils prior to discharge of cleaned water. Storm water quality is unknown at this time. No stormwater detention is planned at this time.

Water treatment system will consist of water intake structure, dissolved air floation, micro/ultra-filtration followed by seawater and brackish water reverse osmosis followed by demineralization process including condensate polishing. Process descriptions are provided in CCGT Works Information package. Chemicals to be used have been described earlier; exact quantities have not been determined. Waste produced includes solid sludge and brine.

Noise

Some of the major sources of noise from construction of the proposed project will include:

Operation of construction equipment Construction activities such as cutting and grinding

Pile driving

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Steam blows

Traffic and deliveries

During operation noise sources will include major equipment such as CTG, HRSG, STG and GSU transformers. Determination of noise impact levels will require evaluation of individual noise sources, location of noise receptors, enclosure of equipment, intervening noise sources and hours of operation. Since the project will be located in a major industrial area, noise impacts are expected to be mitigated. General specification requirements for equipment require 85 dBa at 3 meters for the majority of balance of plant equipment. This does not apply to equipment such as gas turbines and steam turbines. However, the turbines are expected to be located in enclosures.

Limits on noise levels are commonly established and enforced at the local (city or district) level. Lending institutions also (e.g., EX-IM, World Bank, etc.) require compliance with prescribed noise level limits to meet lending eligibility requirements. These limits may impact construction activities as follows:

Prohibit certain activities at certain times of day. (example: no pile driving or steam blows at night.) Require noise monitoring and mitigation to reduce noise to permissible levels.

Basic sound level meters are typically used by site/field personnel to check noise levels during construction. Noise specialists can conduct noise-related performance tests during startup and commissioning as well.

Socio - Economics

Eskom to address expected quantity of personnel and shift structure during long term plant operation.

Labor force during construction will include a mix of EPC contractor personnel, subcontractors, crafts personnel (depending upon union of non-union requirements). Refer to previous responses on craft mix and quantity of personnel.

All employees should be knowledgeable, trained and tested for the following:

Project work rules. Project Labor Agreement terms and conditions.

Schedule of labor-management meetings.

Work assignment determination and management.

Workweek, work hours, shift work, and payday.

Dispute settlement procedures.

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Safety goals and responsibilities.

Fitness for duty, drug/alcohol testing.

Separation of employment, timekeeping, and attendance requirements.

Construction field staff, superintendents, and subcontractors assigned shall manage the following functions within their assigned areas:

Direct and coordinate daily activities within their assigned areas. Plan and perform work to meet project schedule requirements.

Meet project safety and quality goals.

Meet project cost and schedule goals.

Execute construction according to project-specifications and drawings.

Enforce project work practices and project rules.

Identify needs, initiate procurement, and efficiently use direct hire manpower.

Determine needs, initiate procurement, and efficiently use, commodities, temporary works materials, and tools.

Promote constructive craft labor relations.

Coordinate with and/or between construction subcontractors.

Provide input to project coordination meetings and schedules.

Ensure safe and efficient use, coordination, and maintenance of construction equipment.

Reserve and request stored materials, equipment, and commodities in a timely manner.

Provide for proper care and custody of materials, equipment, and commodities issued from storage. Return surplus materials to storage in good condition.

Document expended labor (timesheets) and progress.

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Safety equipment including hard hats, safety glasses, harnesses, lanyards, monitoring equipment, etc. will be provided. On site nurses station or first aide station is typically provided during construction. On-site emergency services are typically not provided during construction but interface with local emergency services including advising department of the project location and periodically invite them to visit the site for familiarization is very common.

Following safety management techniques are expected to be implemented:

Drug Testing: Required as a condition of employment. Site Cleanup/Housekeeping: The project should have a cleanup program which routinely and continuously results in disposes of job-specific trash, such as

stripped concrete form material, and general trash, such as workers' lunch remains.

Fall Protection: Program should enforce harness/safety line use, safety net use, handrail and opening protection rules, and proper scaffold erection and use.

Fire Protection: Requires, locates, and arranges for service of fire extinguishers, requires off-hours fire watch, and establishes a fire notification and prevention plan.

Crane Operation: Requires routine crane safety inspections and qualified equipment operators. Provides instruction on crane operation and hand signals.

Rigging Methods: Provide for maintenance, inspection, and proper rigging material and technique. Performance of prelift rigging reviews and lift meetings for involved workers. Performance of detailed review of major lift plans and rigging plans.

Confined Space Access: Establish a confined space entry procedure requiring environment testing, planning, and emergency procedures before entry.

Construction Power: Provide for a lockout/tagging procedure and routine inspection of construction electrical distribution devices.

Evaluate Subcontractors' Safety Programs: Evaluate potential Subcontractors using information provided on safety questionnaire and safety statistics. Determine if full-time Subcontractor Safety Engineer is required (typically required if Subcontractor employs over 20 persons onsite, depending on potential hazards, etc.).

Establish a Job Hazard Analysis (JHA) System: Provides a tool to preplan safety into each major work activity or operation.

Establish a project bulletin board: The bulletin board should be in a high-traffic area frequented by the labor force. Post on the board any OSHA and Workers Compensation information and emergency phone numbers, project emergency procedures, crane hand signal chart, safety posters, HazMat information, monthly site incident statistics, and other appropriate information.

Establish site emergency procedures: Procedures should be developed for site evacuation, fire, weather extremes, bomb threat, earthquake, hazardous material spills, and personnel injury. Groups of “first responders” can be identified and trained to provide basic first aide in case of emergencies. The “first responders” are typically made up of craft personnel who receive first aid training.

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Establish safety training program: All training for both staff and craft should be documented for proof of training. Meetings for safety training may include new hire orientation, daily safety task assignment (STA) meetings, daily safety planners, “tool box” weekly meetings, and meetings between labor and management.

Establish a hazardous materials communications program: Prepare a notebook containing material safety data sheets for hazardous material being used onsite. Make the notebook easily accessible to the workers and notify the workers of the notebook's existence.

Interface with OHSA or Public Safety Inspector: The interface for OHSA site inspections is with the Project Field Manager or his designee.

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