B.08.03 TECHNICAL SPECIFICATIONS Rev.01.pdf

DEPARTMENT OF THE ARMY

U.S. ARMY GARRISON LIVORNO

DIRECTORATE OF PUBLIC WORKS

APO AE 09613

PROJECT

ED 00176‐8

UPGRADE ELECTRICAL SYSTEM

CAMP DARBY (SOUTH)

LIVORNO, ITALY

TECHNICAL SPECIFICATIONS

Consisting of 114 pages and of 1 enclosed

GIANLUCA LUCETTI

Chief, Engineering Services Branch

Prepared by:

STEPHEN L. DONELLY, PE

Director of Public Works THE OK DESIGN GROUP S.r.l.

ARCHITECTS – PLANNERS

CONSULTING ENGINEERS

VIA ANGELO BARGONI, 78

00153 ROME, ITALY

on March 2021 – Rev. 01 July 2021 APPROVAL DATE ________________

‐1‐

TABLE OF CONTENTS

SECTION TITLE No. PAGES

Ia GENERAL PROVISIONS

IIa DESCRIPTION OF WORK

IIIa DEMOLITION AND REMOVAL

IIIb EXCAVATION AND BACKFILLING

IIIj REMOVAL AND DISPOSAL OF ASBESTOS CONTAINING MATERIALS

IVa REINFORCED CONCRETE WORK

IVd ELECTRICAL CABINS

Ve MISCELLANEOUS METALWORK

VIIc PAINTING

VIIIb ROOF WATERPROOFING

VIIIc ROOF MEMBRANE MATERIALS

XId REPAIR OF BITUMINOUS PAVINGS

XIIf AIR CONDITIONING SYSTEM

XIIIa ELECTRICAL SYSTEMS

XIIIb TELECOMMUNICATION SYSTEM

XIIIc EXTERIOR ELECTRICAL SYSTEM

Ia‐1

SECTION Ia

GENERAL PROVISIONS

1a‐01 WORK PHASING.

a. Work Schedule. Whenever the nature of the contract and the work location are such that the work is to be performed in an area assigned to activities and services that cannot be interrupted, work shall be scheduled with concurrence of COR in such a manner as to cause the least possible inconvenience to the normal operations of mentioned activities and services. Contractor shall submit his proposed work schedule to the COR at the time of the pre‐construction conference. Work start shall be contingent upon schedule approval.

b. Utilities Cut‐Offs. As a rule, cut‐off of power and other utilities (water, sewage, heating system, etc.) is not allowed. All temporary connections necessary to insure continuous power distribution shall be provided. If cut‐offs are necessary, they shall not exceed the period of time strictly needed to make the temporary connections. Cut‐off shall be scheduled with the COR not less than 15 days ahead of time.

c. Alarm, Telephone and Televisions Systems. Deenergizing of alarm, telephone and television systems is strictly prohibited. Should these systems, which may not appear on the drawing interfere with the contract work, they shall be temporarily diverted and fed by means of temporary connections to be adequately protected. Written approval must be obtained from COR prior to doing any temporary work.

d. System Reactivating. At the completion of the work, all existing systems, including water, electrical and heating systems, shall be reactivated and placed in their original locations.

e. Temporary Protections. Floors, carpets, and equipment that cannot be removed shall be adequately protected by temporary tarpaulins to be furnished and installed at no cost to the US Government. In addition, temporary protections shall be furnished and installed in some particular areas so as to allow performance of activities that cannot be interrupted or transferred. Also, the Contractor shall be responsible for removing, protecting, and reinstalling all furniture, shelves and furnishings that may interfere with the work course.

A wrong or no evaluation of all requirements specified above does not constitute grounds for a request for additional compensation.

1a‐02 JOBSITE CLEAN UP AND DUST CONTROL. The contractor shall have sufficient trash/waste bins on site, and shall clean the worksite so that all discarded materials, debris and trash are placed in these bins at the end of each workday, and not left or allowed to accumulate anywhere else on the jobsite. These waste bins shall not be allowed to overflow with debris, and shall be emptied as soon as they become full. Haul roads shall be watered sufficiently to prevent excessive dust.

Ia‐2

The work area shall be swept regularly to prevent accumulation of debris. Equipment, construction materials and excavated soil shall be stored in a safe and orderly manner on the jobsite, in accordance with the contractor's approved area use plan.

1a‐03 CONSTRUCTION AND DEMOLITION WASTE MANAGEMENT. The contractor is considered the waste generator of all salvage, re‐usable, re‐cyclable and disposable materials derived from the demolition and removal works included in this contract and shall handle these materials as hereinafter indicated.

a. Salvage Material. All salvage end items that the COR will have considered in good operating conditions shall be disassembled without damage, cleared of all dirt and scaling and then transported to the DPW Warehouse, Building 5156, Depot, where they shall be handled over undamaged.

b. Recyclable Material. All construction and demolition recyclable waste material shall be delivered to authorized treatment facilities by the contractor.

c. Special Waste. All special waste, either hazardous or not hazardous, shall be delivered by the contractor to authorized disposal facilities.

d. Waste Storage. Construction and demolition waste shall be stored in waste specific containers provided by the contractor. Containers will be in good conditions, free from severe rusting, bulging, or structural defects. Containers shall be placed in area identified by COR. Containers shall be removed once full or on COR’s decision.

e. Certificates and Authorizations.

(1) Recyclable Materials. As regards to recyclable materials, the Contractor shall submit copy of the authorization of the treatment facility which they are delivered to and will certify that waste have been removed in compliance with applicable law requirements.

(2) Disposable Materials. As regards to material delivery to disposal facilities, the contractor will provide the COR and DPW Environmental Office with copies of the following documents:

Authorization to transport construction and demolition waste;

Authorization of the landfill;

4th copy of Formulario di Identificazione del Rifiuto.

(3) Waste Manifest. All transported waste will be accompanied by the Formulario di Identificazione del Rifiuto (waste manifest) to ensure a complete audit trail from point of origin to ultimate disposal.

Ia‐3

The waste manifest must be completed in quadruplet, all dated and signed by the waste generator and countersigned by the transporter. The first copy of the manifest will remain with the waste generator; of the remaining three copies, (countersigned and dated by the receiver), the second copy will remain with the transporter, the third copy will remain with the receiver, and the fourth copy must be returned by the transporter to the waste generator within 3 months of delivery of the waste to the disposal/treatment facility.

f. Costs. All operations included in this paragraph shall be carried out by the contractor with no additional cost to the US Government.

1a‐04 AUTHORIZATION FOR INSTALLATION OF MATERIAL AND EQUIPMENT. Before installing any material or equipment mentioned in the specifications, approval shall be obtained from the COR. Contractor shall submit material samples, shop drawings, manufacturer's literature, etc., to the COR 10 days prior to installation and shall proceed with installation only after receiving written approval from the COR. All material installed without COR's approval shall be removed.

1a‐05 ISPESL AND CEI STANDARDS. All work described in these specifications shall be accomplished in strict compliance with the ISPESL (Superior Institute of Prevention and Assurance of Work) and CEI (Italian Electrotechnical Committee) standards. In particular, if the work under contract, such as roof repairs, building painting, etc., may cause Contractor's personnel or other individuals to come in contact with non insulated electric lines, these shall be temporarily protected by use of appropriate spiral plastic tubes available on the market.

1a‐06 TRANSLATION AND TITLE ABBREVIATION. The terms COR and "Direzione dei Lavori" used in the Italian version of these specifications are equivalent to the American term "Contracting Officer's Representative," which in the English version is indicated by the letters

COR.

1a‐07 PERMITS AND CHARGES. The following authorizations or practices are needed, prior to starting work, to require from entities outside the United States Government:

Permissions for the search and/or demining of explosive devices to request at the military authorities responsible for the territory (5th DGM Padova), see chapter 3b‐04.

Costs for requests and granting authorizations mentioned above are totally in charge and at the expense of the contractor, who must first find out from the institutions required, provide all the necessary documents and pay all fees required.

1a‐08 DIGGING PERMIT. The Contractor shall obtain a digging permit for all work areas affected by this contract (to insure that all the as‐built information for underground services is received). This permit and related drawings must be received by the Contractor prior to starting any work. After receipt of the digging permit, the Contractor shall immediately notify, in writing the Contracting Officer of the permit receipt.

Ia‐4

The Contractor will be held responsible for any damages caused to existing services, as indicated on the digging permit and related drawings, and will repair such damages at his own expense.

1a‐09 ASBESTOS. No handling of asbestos containing material is included in this project. Use of asbestos containing materials is forbidden. Only in the Vinca compensation works is included the demolition of a building with asbestos roof (see Section 3J and Table V‐1).

1a‐10 PARTICULAR REQUIREMENT FOR WORK IN HEATING PLANTS. When the contract requires the work to be performed inside heating plants, the contractor shall provide a new cylinder in the door lock and shall deliver two keys of the new cylinder and the removed cylinder to the personnel in charge of the maintenance. At the work end the contractor shall restore the lock to the original conditions and the temporary cylinder will remain his own property.

1a‐11 ENVIRONMENTAL PROTECTION SYSTEM. The contractor will provide the following information semi‐annually to be used by the Government to address environmental performance relative to the goals of the USAG Vicenza Environmental Management System.

Please note that the amounts reported are those used/generated by the contractor regardless of source (private purchase or government furnished). Reports for January – June will be submitted by 15 July and reports for July‐December will be submitted by 15 January each year.

Media Report Element #1 Report Element #2

Non‐Hazardous Solid Waste

Total Waste Generated (Kg)

Amount of Waste Diverted from Landfill (Kg)

Construction Debris/Demolition Materials

Total Waste Generated (Kg)

Amount of Waste Diverted from Landfill (Kg)

Compostable/Organic Material

Total Waste Generated (Kg)

Amount of Waste Diverted from Landfill (Kg)

Hazardous Materials Total Used (Kg)

Hazardous Waste Total Generated (Kg) Total Recycled (Kg)

Energy Consumption ‐ Electricity

Total Energy Consumed (MBtu)

Energy Consumption ‐ Fuel

Total Fuel Consumed (L)

Renewable/Alternative Energy

Total Consumed (MW)

Facility Construction/Renovation

Number of Buildings LEED Certified Silver or Higher

SqFt of buildings LEED Certified

IIa‐1

SECTION IIa

DESCRIPTION OF WORK

2a‐01 STATEMENT OF WORK. Contractor shall furnish all plants, labor, equipment, material and transportation necessary for the accomplishment of the work described in these specifications and shown on drawings, both of which are an integral and binding part of the contract. This specification is referred to Batch#1.

2a‐02 DESCRIPTION OF THE WORK. The project consists in the replacement of the existing electrical main distribution system of the Camp Darby South.

Project includes the provision of new communication cable ducts with fiber optic cable which integrates the existing communication system.

New substation control system will be connected to the existing central control workstations at buildings #5112 (DCO), #5155 (PWO) and #5140 (Electrical Shop). These workstations will be updated with the required hardware and software to include all the substations included in this project.

A new monitoring system will be also provided at the Camp Darby Communication node building #204 for the monitoring and tele‐control of the substation’s equipment from a centralized station.

The project includes the UXO inspection procedures for the removal of the unexploded ordinance.

ARCHITECTURAL

All the existing equipment inside the substations including through wall fan and louver will be repaired by replacement and then the interior walls shall be patched to repair holes and cracks and painted with two coats of white distemper paint. Works will include:

‐ All architectural works required for the construction of the new prefabricated concrete substation SS#118 and SS#776;

‐ Patching and painting all substations and repair of architectural and/or structural deficiencies of all the renovated substations;

‐ All the existing equipment inside the substations including through wall fans shall be repaired by replacement, and then the interior walls and ceilings shall be patched to repair holes of the fans not more used and cracks and painted with two coats of white distemper paint;

‐ The exterior walls shall be also patched and painted using quartz paint with synthetic resins, quartz powders and additives;

IIa‐2

‐ Roof of all renovated substations shall be restored by complete removal of the existing waterproofing membranes, and application on the precast‐reinforced concrete elements, of two ply bituminous waterproofing membrane, the top one self protected with slate chips. Existing flashing will be also replaced, or new flashing will be provided were missing;

‐ Concrete floors of the renovated substations shall be also restored by the application of a suitable resin product;

‐ All doors of the substations shall be cleaned and repaired.

STRUCTURAL

‐ Structural work includes mainly the reinforced concrete pad for the new prefabricated substation and minor structural work which support the electrical cable duct installation.

MECHANICAL

‐ Mechanical work includes mainly the provision of new air conditioning systems inside all transformer substation.

ELECTRICAL

‐ Electrical work includes mainly the provision of a two completely new transformer substations (#118 and #776), the replacement of all direct buried medium voltage cables with new cable installed in cable ducts, the replacement of all medium and low voltage switchgears, replacement of all medium/low voltage transformers, new power factor compensating units, new relays and tele‐control system, and accessories in all substations.

The required works are, but they are not limited to, the following:

‐ Convert the existing 10kV distribution system of the Darby South area in a new 15kV closed loop; modify/integrate MV switchgears in Bldg 807 am in bldg. 808 accordingly.

‐ Replace all the existing MV cables with new cables suitable for 15kV operation. The new cables shall run into new underground cable ducts and, or in new one indicated, into the existing ducts. Remove the existing 10kV cables wherever possible.

‐ Replace all the existing MV panels in all the substations. New panels shall be suitable for the new Voltage level (15kV). MV circuit breakers shall be motorized and complete with electronic relays suitable to be connected to a communication network, to allow the remote control of the breaker (open/close), the remote setting of each circuit breaker (trip setting) and the remote monitoring of all the electrical characteristics (Voltage, Amps, Active Power, Reactive Power, Power factor, etc.).

IIa‐3

‐ Replace all the existing transformers currently having 10kV primary winding; new transformers shall be resin insulated type, 15kV primary winding; secondary windings shall be 400V and 230V as indicated.

‐ Replace the LV panels of all the substations. New LV panels shall be composed by circuit breakers with electronic relays, having protection and measurement functions. Main LV breakers shall be motorized. LV circuit breakers shall be suitable to be connected to a communication network, to allow the remote setting of each circuit breaker (trip setting) and the remote monitoring of all the electrical characteristics (Voltage, Amps, Active Power, Reactive Power, Power factor, etc.). New LV panels shall be suitable for being fed through emergency generators (purchasing and installation of generators is excluded by the scope of work).

‐ Replace the interior electrical system for the services of each transformer station (lighting, power, emergency shutdown, etc.)

‐ Replace the fixed and automatic power factor compensators in each transformer station as indicated.

‐ Provide physical separation of the MV cables and LV cables. Install new manholes and cable ducts in order to avoid MV and LV cables sharing the same manholes or conduits.

‐ Install new LV cables ducts and cables where necessary in order to have each building fed with 1 dedicated circuit breaker and 1 dedicated cable. Reconnect the existing cables to the new LV panels as much as possible. Convert all the existing TN‐C distribution into TN‐S.

‐ Verify the existing grounding system of every substation and integrate/upgrade/modify it if necessary.

‐ Connect each substation to the existing communication duct system; new cable ducts shall be installed from the existing communication manholes up to each substation.

‐ Install a new communication architecture dedicated to the renovated electrical system. New communication architecture shall be composed by new dedicated fiber optic cables, to be routed inside the existing and new cable ducts, and new communication equipment inside each substation, in order to:

‐ Control the motorized MV and LV circuit breakers ‐ Monitor the electric parameters measured by the MV and LV circuit breakers, as well as the alarms relative to faults.

‐ Monitor the Transformers temperatures and alarms ‐ Monitor the UPSs status and alarms ‐ Monitor the Air Conditioning Units status and alarms

IIa‐4

One dedicated workstation for the electrical system monitoring and control is currently present in bldg 5155 (PWO) and one in bldg. 5140 (electrical shop), installed with a similar project involving the electric substations of Depot Area. These workstations shall be updated to include all the substations subject of the present project, integrating adequately the existing hardware and software in order to have a fully operating system.

‐ Electrical work includes a detailed study and calculations based on the equipment selected of:

suitable TA and TV, in accordance with CEI 0‐16 connection point‐to‐point and programming of the relays short circuit currents calculations (radial configuration, with main supply at compensated neutral and isolated neutral, capacitive currents) performed by skilled technician designated by the Protection Relay Manufacturer selectivity study of the relays, including main substation supervision of protection operational tests.

The relay setting study shall be performed on the basis of an official letter from the Commercial Power Company dated no more than three months before the study.

CIVIL

‐ Civil work includes mainly the excavation and grading along new cable duct run, and some minor ground works.

ENVIRONMENTAL IMPACT MITIGATION WORK.

‐ Mitigation works are provided by this project to reduce the impact of the electrical upgrading; mitigation includes the demolition of three existing abandoned buildings to compensate the loss of area for construction of two new larger substation and new manholes and special attention to reduce noise, etc.

‐ Contractor shall pay attention to the instruction foreseen in the Work Schedule attached to the “Piano di Sicurezza e Coordinamento”.

2a‐03 PHASING.

1. Before starting work the contractor shall perform an accurate check of the contract documents, shall submit for approval the material, the equipment and the shop drawings, shall inspect the site and the substation; shall request the permits for excavation. Contractor shall request the official letter of the electrical parameters at the power delivery point by the commercial power provider (ENEL) and shall submit the qualification resume of the technician which shall perform the protection and selectivity study of the medium voltage network.

2. Contractor shall investigate the location of underground service lines, submit for approval a trenching plan, and then perform the signalization of the cable duct trenching with suitable marks. In addition the Contractor shall verify the cables TNC from the substations to the loads for next integration of cables needed for the TNS system.

IIa‐5

3. Work shall be started with "UXO" procedure and in accordance with requirements of "VINCA" about allowed period of construction. Works in all areas cannot be started until completion of "UXO" procedure and receipt of notification of official approval by the 5th department infrastructure of Padova.

4. Start trenching from SS#808 as indicated on the drawings, provide a temporary substation adjacent each substation, connect the existing load to temporary substation, disconnect the existing loads and provide removal and demolitions as indicated on contract drawings. Perform all architectural, structural, electrical and mechanical works in the substations and install medium voltage, low voltage (extension of cables and addition to obtain the TNS system) and signal cables in the cable ducts from substation SS#808 to all, and from all the substations and close the loop in substation 808. Provide signal connections of the relays and communication devices and perform the temporary setting of the protection relays. Perform the grounding tests and submit the results to c.o.

5. Perform phasing as detailed in the contract drawing E‐3 “Work Phasing Notes”.

At the completion of the work in all substations provide the adjustment of the relay setting and perform the final test of the overall network a presence of the technician designated by protection relay manufacturer. Provide al the as‐built drawing and certifications as per requirements of contract documents

2a‐04 SAFETY DURING CONSTRUCTION. The project is performed assuming the possible presence of more than one firm, also not at the same time, on the work place, as per paragraphs 3 and 4 of art. 90 of Legislative Decree 81/2008. The “Piano di Sicurezza e Coordinamento” (safety and coordination plan) is included as part of the contract documentation. The Contractor shall provide his/her own “Piano Operativo di Sicurezza” (operational safety plan) and comply with the requirements of the mentioned Law in all applicable parts.

All the connection and disconnection works of the electrical cables shall be executed in compliance with the procedures included in the D.lgs 81/10 art.82. A special requisite refers to the disconnection of the medium voltage cables that shall be performed by skilled operators provided with personal certification as per requisites of decree 04/02/2011. The cables, once the disconnect switch ahead and downstream are open, shall be grounded to drain the capacitive residual charge before any handling.

The contractor will be required to obtain the approval to perform the UXO survey, perform the UXO survey and have the results certified by the 5th division in Padova, in compliance with all Italian laws in force and the provisions contained in the security plan in the design phase (see also the PSC). The inspector must be certified in the Italian roles authorized to perform this work. All request and certification packages must be prepared by the Contractor, including payment of any fees for submission to the competent Italian authorities and transmitted via the COR.

IIa‐6

2a‐05 EMERGENCY SITUATIONS. Contractor will maintain the following documentation available and usable at the work site, to be provided by the COR:

- A copy of the Camp Darby Emergency Plan, to which contractor will refer in the case of the emergency conditions indicated in the plan itself.

- Base Grid Coordinates layout, with the work site highlighted.

- List of emergency telephone numbers.

IIIa‐1

SECTION IIIa

DEMOLITION AND REMOVAL

3a‐01 GENERAL. Demolition and removal shall be performed in compliance with low prescription of D.Lgs No. 81, 9 April 2008 and U.S. Army Corps of Engineers “Safety and Health Requirements” Manual EM 385‐1‐1. Breakups of predetermined dimensions and partial or total demolition of masonry and concrete surfaces, floor, etc., must be performed in a workmanlike manner, by taking the necessary precautions or by shoring the surfaces in order to avoid damages to the structures to be left in place, accidents, inconveniences or interference. Waste material shall not be thrown down, but rather, it shall be conveyed or guided downward, after wetting it to prevent raising dust. During demolition or removal work, the Contractor shall adopt every measure suitable to avoid deterioration of the items which may be reinstalled, or which, in the opinion of the COR, may be used at a later date.

These items shall be cleaned, guarded, hauled and set neatly in the storage areas indicated by the COR. The demolition work shall be limited to the work, or to its parts, and to the dimensions specified. Reconstruction of structures demolished over and above the quantities indicated, as well as rehabilitation of work damaged as a result of lack or omission of precautions or shoring, shall be performed by the Contractor. All waste material resulting from demolition and removal shall be handled by the Contractor in accordance with para. 1a‐ 02 of these specifications. Oil transformers shall be emptied, before transportation, following the procedure required by Italian Law and Base regulations. All the areas surrounding the transformer substations and along cable duct run shall be left clean and as previous condition.

3a‐02 REMOVAL OF EXISTING PLANTS. Any necessary cutting and removal of vegetation shall be carried out manually, with the help of cutting tools, chain saws, bush grubbers, to be directly controlled by men. Cutting shall skim the soil as much as possible and be followed by choice and stacking of the debris, loading, transport and unloading in specific disposal areas as identified by the COR, to be carried out by the Contractor; then shall be also removed the radical apparatus.

3a‐03 DEMOLITION OF FACILITIES. Project includes demolition of cable ducts, two substation enclosures including foundations, three buildings in the ASA area for Environmental Impact Mitigation (see Work Schedule Attached to “Piano di Sicurezza e Coordinamento” and Attachment 1 to this Specification for work in ASA).

IIIb‐1

SECTION IIIb

EXCAVATION AND BACKFILLING

3b‐01 EXCAVATION.

a. General. During excavation, material suitable for backfilling shall be piled at a sufficient distance from the banks of the excavation to avoid backslides. All earthy material in excess or unsuitable for backfilling shall be delivered to the location indicated by the COR and within 10 km from work site. This does not apply to debris and rubble of all types, from which excavation material shall be rid of; these shall be disposed of at a dump, as prescribed at paragraph 1a‐02. Particular attention is required during the autumn and winter seasons and in case of special storm events when the water is outcropping on the ground and the excavation operations must still take place with appropriate techniques implemented by the Contractor in compliance with the safety regulations and at Contractor’s expense. In case excavation is performed in presence of water and water level is below 20 cm height, the contractor shall remove water at his expense using the means he deems suitable. If water reaches higher levels, removal shall still be at contractor's expense only if the possible presence of groundwater is indicated on the drawings or in these specifications, and only to the extent indicated. In addition, the contractor shall prevent the access of water deriving from outside to the excavation site: in case water accumulates in excavated area, removal will be at contractor's expense. Struts and shoring shall be placed as necessary for the protection of the work and for the safety of personnel. Adequate precautions shall be taken for the protection of existing underground pipelines or electrical cables. Before any excavation is started, plans showing the approximate location of underground utility lines shall be furnished to the Contractor, upon his request. The area of excavation shall be delimited by trestles, gangplanks, and warning signs visible during night and day, to prevent injuries to persons, as prescribed by the ISPESL standards.

b. Trenches. Trenches shall be of the necessary width for the proper laying of the pipes and electric cables, and the banks shall be as nearly vertical as practicable. The bottom shall be accurately graded so as to provide bearing for the pipe on firm soil. The clear space between the pipe and the trenches wall shall not exceed 8" (20 cm.) on either side of the pipe.

Further excavation will be required for housing and sealing of pipe joints. In proximity of buildings, existing underground utility lines, and wherever specifically requested in other sections of these specifications or on drawing notes, trenches shall be excavated manually.

c. Excavation for Foundation and Appurtenances. Excavation for manholes and similar structures shall be of sufficient dimensions as to leave a 12 inches (30 cm.) free space between their outer surfaces and the embankment or timber which may be used to hold the banks.

IIIb‐2

3b‐02 BACKFILLING. Trenches shall not be backfilled until foundation, pipes or cables have been inspected and approved. Where, in the opinion of the COR, damage is likely to result from withdrawing of shoring, the latter shall be left in place. Trenches shall be backfilled with the excavated materials, if deemed suitable, free from large clods of earth, stones, and roots.

Backfilling material shall be deposited in 15 cm. (6") layers, thoroughly rammed until the trench is completely covered, and watered as necessary. Any material rejected by COR shall be replaced with material acceptable to the COR, coming from borrow pits located outside the US military base.

3b‐03 REPAIRS. All crossings of existing paved or asphalt coated surfaces shall be cut neatly vertical and horizontal. At the completion of the work, pavement and sidewalks shall be restored to the original conditions. Damaged lawns shall be sown again and damaged plants shall be replaced with others of the same kinds. Any damage caused during the work progress shall be repaired by and at the expense of the Contractor. The Contractor shall be responsible also for injuries caused to persons as a result of non‐compliance with prescribed ISPESL norms.

3b‐04 CLEARANCE OF EXPLOSIVE DEVICES (U.X.O.). The search for unexploded ordnance shall be performed by the Contractor in the areas indicated in the PSC and Contract drawings. All activities of land clearance will be performed according to the prescriptions issued by the military authorities competent for territory, the 5th “Reparto Infrastrutture Direzione Genio Militare di Padova, Sezione B.C.M.”. In the project are indicated the areas to be inspected as specified in the Safety and Coordination Plan; for the bid purpose a range of +/‐ 10% on the linear excavation shall be considered without additional expenses by Government. If it become necessary to deviate the excavation outside the strip surveyed for the UXO procedure, Contractor must notify the Contracting Officer submitting adequate documentation of the motivation of the deviation and the plan of the new proposed route.

For the issue of opinion and permit of land clearance service the Contractor presents, on behalf of the Government of the United States, a request to the territorial jurisdiction of the Infrastructure Department. The request shall be enclosed with:

‐ chorography and floor plans that indicate the areas on which they will be carried out the activities of explosive clearance;

‐ report describing the main work to be performed;

‐ geological report;

‐ name of the specialist B.C.M. company that will perform the search operations, which must be duly registered in the register of authorized companies;

Upon receipt of request the Infrastructure Department issues the obligatory assessment and related technical requirements within approximately 30 days. In accordance with the assessment the company perform the design of land clearance, implementing faithfully and in detail the technical requirements issued by the Infrastructure Department, referring them to the specific area to be cleared.

IIIb‐3

Research activities and the unveiling of explosive remnants of war will begin only upon approval of the design by the Infrastructure Department, with following release of permit within 30 days. At land clearance completed the company B.C.M. issues the declaration of guarantee that sends the Infrastructure Department which provides to carrying out checks and inspections of the work performed. Subsequently it is released within 60 days from the same Military Authority, the minutes of assessment that allows the practicality of the area for the construction of future works.

NOTE: In addition to above requirements, before starting the excavation, the Contractor must investigate with a metal detector furnished by himself the location of existing underground utility lines, e.g. electrical, communications, water, TV lines, or any other utility which may not be shown on the existing condition drawings, in order to prevent damaging or interrupting any existing utility. Investigation shall be done in the presence of the COR. Trial runs shall be done with the metal detector in the presence of the COR or his representative prior to the investigation. Investigation shall be done following COR approval of metal detector. The Contractor shall mark‐up on a copy of the existing conditions the exact field location of the existing utility lines which are found during excavation. This copy shall then be submitted to the COR. Excavation work performed close to existing utility lines shall be done by hand within a 3 meter radius.

IIIj‐1

SECTION IIIj

REMOVAL AND DISPOSAL OF ASBESTOS MATERIALS

3j‐01 CONTRACTOR QUALIFICATIONS FOR PERFORMANCE OF WORK. Due to the highly specialized nature of this work and the health hazards involved with execution, only personnel experienced and trained in asbestos work will be allowed to perform these service. To perform this work the Contractor must be authorized to perform removal, collection, transportation, treatment and disposal of material containing asbestos in accordance with all requirements and applicable publication and laws. Equipment, trucks and disposal areas shall also be in accordance with applicable publications and laws. The Contractor shall furnish copies of all authorizations prior to starting work.

3j‐02 DEFINITIONS.

a. Asbestos. The term asbestos includes: chrysotile, amosite, crocidolite, tremolite, anthophyllite, and actinolite.

b. Asbestos Control Area. An area where asbestos removal operations are performed which is isolated by physical boundaries to prevent the spread of asbestos dust, fibers, or debris.

c. Permissible Exposure Limit (PEL). The PEL for asbestos is 0.2 fibers per cubic centimeters of air.

3j‐03 TITLE TO MATERIALS. Materials resulting from demolition work, except as specified otherwise, shall become the property of the Contractor and shall be disposed as specified herein.

3j‐04 DESCRIPTION OF WORK. The work consists in the demolition and removal of the roofs of three abandoned buildings located in the ASA area as indicated on VINCA Drawing V‐1, and in the Piano di Sicurezza e Coordinamento”. The Contractor shall furnish all labor, materials, services, insurance, and equipment necessary for the total removal and disposal of the asbestos containing materials indicated on drawings, while concurrently providing for the health and safety of both workers of the surrounding area.

3j‐05 WORK PROCEDURE. Perform asbestos‐related work in accordance with Italian Laws and Regulation and as specified herein:

‐ D.L. 277 (15/08/1991);

‐ D.M. 20/08/99 (1999);

‐ Law 257 (27/03/1992);

‐ D.M. 471 (25/10/1999);

‐ D.Lgs. No. 81 (09/04/2008);

‐ D.L. 17/03/95 (1995).

IIIj‐2

Use wet removal procedures. All water used in cleaning operations shall be treated and disposed of as asbestos‐ contaminated material. Personnel shall wear and use protective clothing and equipment as specified herein. Eating, smoking, or drinking shall not be permitted in the asbestos control area or change room. Perform work to minimize release of airborne asbestos fibers. Scrubs and vacuum all walls, ceiling, floor, and other surfaces in the building area. Immediately after removal, place all asbestos and asbestos contaminated material in sealed impermeable plastic bags, 0.15 mm thick. Load and transport off‐station all drums containing asbestos and dispose in authorized disposal yards after asbestos material has been properly treated. Perform all other items of work not specifically listed, but necessary to perform the subject work in accordance with Italian Laws and Regulations.

a. Site Inspection. While performing asbestos removal work, the Contractor shall be subject to on site inspection by the Contracting Officer, who may be assisted by safety or health personnel. If the work is in violation of specification requirements, the Contracting Officer will issue a stop work order to be in effect immediately and until the violation is resolved. Standby time and expenses required to resolve the violation shall be at the Contractor's expense.

3j‐06 CLEANUP AND DISPOSAL.

a. Cleanup. Maintain surfaces of the asbestos control area free of accumulations of asbestos fibers. Restrict the spread of dust and debris; keep waste from being distributed over the general area. Do not dry sweep or blow down the space with compressed air. When asbestos removal, disposal, and cleanup are complete, the Contractor shall provide certifications that the area is clean in accordance with Italian Laws and Regulations. The concentration of airborne asbestos in the control area and the waste container removal system are less than 0.1 fibers (longer than 5 micrometers) per cubic centimeter of air and that there are no visible accumulations of dust. Do not remove the asbestos control area enclosure and caution signs prior to the Contracting Officer's receipt of the certification.

The Contracting Officer will visually inspect the affected surfaces for residual asbestos material and accumulated dust before and after the removal of the asbestos control area; the Contractor shall reclean areas showing dust or residual asbestos materials. If recleaning is required, recertification shall be provided at no additional cost to the Government. Notify the Contracting Officer before unrestricted entry is permitted. The Government shall have the option to perform independent monitoring to certify the areas are safe before entry is permitted.

b. Disposal of Asbestos. Dispose of waste asbestos material in strict accordance with Italian laws and regulations. Procedure for hauling and disposal shall comply with all applicable Italian laws and regulations. Certification of compliance shall be provided to the Contracting Officer.

3j‐07 CERTIFICATION AND SUBMITTALS. The following certifications and submittal shall be provided by the Contractor at the Contractor's expense. All certifications shall clearly identify that the certification provided is in reference to the work performed under this contract.

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a. Contractor Certification. Certification of the regional authorities that the Contractor is authorized to perform asbestos removal and disposal work. Submit prior to start of work.

b. Final Clean‐Up Certification. In accordance with Italian laws and regulations provide certification from the "Servizi di Igiene Ambientale e Medicina del Lavoro della Competente Unità Sanitaria Locale" that the work site is clean and certified safe for unrestricted access. Submit upon final cleanup.

c. Certificate to Transport Asbestos. Provide certification in accordance with Italian laws that transport of asbestos material is in compliance. Submit prior to transport of asbestos material.

d. Certificate of Disposal. Provide certification in accordance with Italian laws and regulations that the asbestos material is disposed of in an authorized disposal site and in compliance with all regulations. Submit after disposal.

e. Plan of Disposal. Contractor shall prepare and submit the Plan for Disposal of asbestos‐containing materials in accordance with ASL (Azienda Sanitaria Locale) requirements.

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SECTION IVa

REINFORCED CONCRETE WORK

4a‐01 MATERIALS. The structural concrete casting in the works required in these specifications shall comply with the following norms:

a. UNI EN 206, Calcestruzzo (concrete);

b. Consiglio Superiore dei LLPP, “Linee Guida sul Calcestruzzo Strutturale”

(guidelines on structural concrete).

Sand shall be free from slime, and the organic matter contents shall not exceed the limit established by Ministerial Decree 3/6/1968.

Concrete shall have the following characteristics:

‐ Lean concrete:

‐ 28‐day characteristic cubic strength: Rck min. 15 N/mm2

‐ Concrete for structural elements:

‐ 28‐day characteristic cubic strength: Rck min. 30 N/mm2 (25/30 class–

UNI EN 206 )

‐ exposure class: Rck E XC1– XC2‐UNI EN 206 ‐ water/cement ratio: max 0.60 ‐ aggregates: normal type ‐ consistency type: S5 ‐ chloride content class: Cl 0.20

If no differently required, steel to be used for reinforcement shall be type B 450C, round deformed and factory checked, with the following characteristics:

‐ Yield tensile stress N/sq.mm. 450 ‐ Ultimate tensile stress N/sq.mm. 540 ‐ Average ratio between effective (fy_eff) and rated (fy_nom) yield tensile stresses shall be lower than 1.25.

‐ Average ratio between ultimate and yield tensile stresses shall be between 1.35 and than 1.15.

‐ Uniform elongation at maximum tensile strength shall be > 7,5%

4a‐02 PERFORMANCE STANDARDS. In addition to what specified on the drawings and in these specifications, the requirements set forth by the following norms apply:

‐ Law 5/11/1971 No. 1086 ‐ D.M. 14/1/2008 “Norme tecniche per le costruzioni” (technical norms for constructions)

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‐ Consiglio Superiore dei LLPP “Linee guida per la messa in opera del calcestruzzo strutturale e per la valutazione delle caratteristiche meccaniche del calcestruzzo indurito” (guidelines for the pourting of structural concrete and for the evaluation of the mechanical characteristics of hardened concrete).

a. Batches. Batches shall be prepared and hauled so as to avoid segregation of the components, or a premature start of curing at the time of concrete placement. The casting must be adequately compacted and vibrated. The concrete surface must be kept moist for a minimum 3 days period. Concrete shall not be placed when the temperature is less than 0 degrees C. Dosing and preparation of concrete mix shall be performed with a concrete mixing equipment adequate to guarantee a proportion of ingredients with 3% accuracy for cement and for the only aggregates class. Mixing in truck mixer is allowed: in this case, mixing duration shall be 50 container revolutions. Mixing shall be performed in the factory before proceeding to transportation. Use of fixed concrete mixer is allowed only for castings of a volume below 1 cu m.

b. Joints. When bar joints in a stressed area cannot be avoided, they shall be made in the less stressed points following the method indicated below and spacing them adequately:

(1) Welding.

(2) Threaded sleeve.

(3) Overlapping by a 20 diameter minimum length and diverting the remaining section of each bar towards the compressed area.

The clearance between two adjacent bars at overlapping shall not exceed 6 times the bar diameter. Tension stressed bars shall not be spliced by overlapping.

c. Bent Bars. The curvature radius of the bent bars shall be no less than 6 times the bar diameter.

d. Bars Cover and Clearance between Two Adjacent Bars. In slabs, baffles and partitions the distance between the surface of any reinforcing bar and the nearest concrete exterior face shall be no less than 0.8 cm, and no less than 2 cm for beams and columns;

however, the requirements indicated on the drawings govern. The distance between adjacent reinforcing bar surfaces in every direction shall be no less than 1 time the bar diameter, and in all cases no less than 2 cm. For this purpose special spacers shall be used.

e. Stirrups shall be closed and shaped adequately to resist so that by working under tensile stress they may resist the outward movement of the longitudinal bars.

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f. Removal. Form must be removed by degrees and in such a manner as to avoid dynamic actions. Forms shall not be removed prior to concrete having reached the stress value necessary for use of the structure at the time of removal. However, such a decision rests with the COR. If other specific checks are not required, the following minimum time frame before removal of forms shall be complied with:

(1) Ordinary Concrete.

‐ Side forms of beams and columns 3 days ‐ Slab forms ‐ short span 10 days ‐ Shoring and ribbing of beams, arches, vaults, etc. 24 days ‐ Cantilever structures 28 days.

(2) High resistance Strength Concrete Mix.

‐ Side forms of beams and columns 2 days ‐ Slab forms ‐ short span 4 days ‐ Shoring and ribbing of beams, arches, vaults, etc. 12 days ‐ Cantilever structures 14 days.

4a‐03 EXPOSED SLAB FINISHING. On all exposed slabs, the surface finishing level shall be such as not to present variations over 5 mm on every 3 m section. Concrete shall be compacted with a wooden or metallic bar and the finished surface with a wooden trowel.

The surface shall be smooth and even, sand granulated, free of irregularities and of tools marks. As to walkways or where a smooth finishing is required, at the completion of the operations described above, a pouring of grout, consisting of one part of Portland cement and of no more than two parts of fine aggregate mixed with water to the consistency of a dense paint shall be applied. The grout shall be smoothed with a trowel and kept damp for the seasoning.

4a‐04 TESTS.

a. Concrete Mix Tests. Concrete specimens shall be taken as prescribed at para.

11.2 of DM (Ministerial Decree) 14/01/2008 “Norme tecniche per le costruzioni” (technical norms for constructions). A test is required for 300 cu m of concrete maximum. Each test shall consist of three sample takings, each one performed on 100 cu m casting maximum.

At least one sample taking shall be performed in each day or pouring. Each sample shall consist of two specifimens to be prepared and seasoned in accordance with norms UNI 12390. Shapes and dimensions of the specimens and of associated frame forms shall be as indicated in Standard UNI 12390. Whenever differences in concrete batch components may lead to assume that concrete quality does not meet the specifications requirements, the COR will have the right to order that further specimens be furnished. The specimens shall be delivered to the COR, who will send them to an official test laboratory for the evaluation of compressive strength. The costs of these tests shall be borne by the Contractor. In the event that the requirements set forth in DM of 14 Jan 2008 on the sample taking are not ascertained or in case tests on concrete placed are not possible or provide negative results, the COR will have the right to order the demolition and reconstruction of the defective portion of the structure.

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b. Reinforcing Bar Tests. Out of each bar lot three bar sections of each diameter will be taken by the COR and sent to an official laboratory specialized in the steel strength tests specified in DM of 14 Jan 2008. The costs of these tests shall be borne by the Contractor. In case of negative results, the measures indicated in the above mentioned Ministerial Decree will be implemented.

IVb‐1

SECTION IVb

TRANSFORMER SUBSTATION

4b‐01 GENERAL RULES. This spec. section specify the new monolithic prefabricated transformer substation that is included in Option Item n. 001. Contractor shall submit all descriptive and detailed executive drawings, the dimensioning calculations and static load tests. Manufacturer supplier shall be Enel qualified complying to” Servizio Tecnico ed Appalti” and shall obtain all approvals of ENEL/DDI in particular:

DG 2071 CABINE BOX

DG 2081 CABINE MINIBOX

UNI EN ISO 9001:2000

Only in order to provide some useful references, we are hereby listing three options for the choice of a suitable manufacturer supplier:

EDILTEVERE s.r.l Via Senese Aretina n.135,52037 Sansepolcro Tel.0575/720355‐Fax 0575/720138

FERRARI GIUSEPPE S.p.A Via Industriale, 27 ‐ Camisano Vicentino (Vicenza) ‐ P.I. 721850246

TMT s.r.l.

Sede Amm.va Comm.le e Stab.: Via Forlivese, 40 50060 ‐ San Godenzo (FI)

The structural concrete casting in the works foreseen in these specifications must be corresponding to the prescriptions of the rules UNI EN 206 and to the “Linee guida sul calcestruzzo strutturale” of the Presidenza del Consiglio Superiore dei LLPP. Sand shall be free from slime, and the organic matter contents shall not exceed the limit established by Ministerial Decree 3/6/1968. Unless otherwise indicated on drawings the characteristics of cast in place concrete:

‐ Lean concrete: 28‐day characteristic cubic strength: Rck min. 15 N/mm2.

4b‐02 RULES. Apply, in addition to the information entered in the drawings, the following Standards used for the design, calculation and verification of the transformer substation:

‐ Decreto Ministeriale 14 Gennaio 2008: "Nuove Norme tecniche per le costruzioni (NTC)" e relativa circolare esplicativa N° 617/C.S.LL.PP. del 2 Febbraio 2009.

‐ Legge 5 novembre 1971 n°1086;

‐ Legge 2 febbraio 1974 n°64;

‐ D.P.R. 06 giugno 2001 n°380;

‐ Decreto 14 gennaio 2008 del Ministero delle Infrastrutture e dei Trasporti (NTC 2008);

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‐ Circolare 02 febbraio 2009 n°617 del…