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Exhibit I - SPECIFICATIONS

WELDING AND INERT GASES

(ACETYLENE, ARGON, ARGON MIX, NITROGEN,

OXYGEN)

TABLE OF CONTENTS

SECTION PAGE

1.0 GENERAL INFORMATION

A. Introduction B. Background C. Purpose D. Reference Documentation E. Definitions / Abbreviations

2.0 REQUIREMENTS

Document Control # Workflow ID Revision #

AAA-0000 0

Effective Date: TBD

Name Title

Originator: Cynthia Baltrip Analyst – PA Support Services

Approver: Chad Jeffrey Director PA. Facility Services

Revision # Description Initials Release # Date

0 Initial Release

AAA-0000 WELDING AND INERT GASES (ACETYLENE,

ARGON, ARGON MIX, NITROGEN, OXYGEN)

Rev# 0

p. 2 of 9 Effective Date: TBD

3.0 VERIFICATION

4.0 PACKAGING

TABLES

TABLE 1 – WELDING AND INERT GASES SPECIFICATIONS

TABLE 2 – DELIVERY LOCATIONS

DART Operations - Engineering

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1.0 SCOPE

This Specification outlines the requirements for the purchase and delivery of Welding and Inert Gases, which are used in Dallas Area Rapid Transit (DART’s) bus and rail maintenance garages. All items required are listed in Table 1. Delivery locations are in Table 2.

2.0 Reference Documentation

The Contractor shall be responsible for obtaining the following documents with lates t revisions and shall comply therewith.

AGENCY STANDARD NUMBER TITLE OF DOCUMENT

OSHA 29 CFR 1910.102 Acetylene

OSHA 29 CFR 1910.104 Oxygen

OSHA 29 CFR 1926.350 Gas Welding and Cutting

DOT

49 CFR 107, 171, 172,

173, 177, 178, 179 and

Hazardous Materials:

Requirements for Maintenance, Requalification, Repair and Use of DOT Specification Cylinders;

Final Rule.

UL 1769 Cylinder Valves

3.0 Definitions / Abbreviations

p. 4 of 9 Effective Date: TBD

°C Degrees Centigrade (Unit of Temperature) °F Degrees Fahrenheit (Unit of Temperature)

CAS Chemical Abstract Service CGA Compressed Gas Association cu ft/lb Cubic Feet per Pound DOT Department of Transportation

MOLAR Relating to or designating a solution that contains one mole of solute per liter of solution.

Mole

One mole of an element or a compound contains 6.022 x 1023 atoms or molecules of that element or compound and equals the atomic or molecular weight of the compound in grams. For example, one mole of argon weighs 39.9 grams.

OEM Original Equipment Manufacturer OSHA Occupational Safety and Health Administration

UL Underwriters Laboratories

4.0 Requirements

4.1 Gas properties shall conform to the requirements in

Table 1.

4.2 Delivery locations are shown in Table 2.

4.3 The vendor shall have a minimum of three (3) years of

experience providing these products in the Dallas area.

4.4 Material Safety Data Sheets will be provided on each

product upon Notice to Proceed with a Purchase Order.

4.5 Contractor shall provide for an exchange of cylinders

to accommodate the refill process.

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4.6 Contractor shall provide full cylinders and pick up empty cylinders within two business days of order.

5.0 Verification

Upon request, Contractor agrees to supply at no cost to DART samples of the product proposed for testing prior to contract award. Samples shall be available with five (5) days of proposal submittal. Functional test ( if required) is verification that meets the manufacturer’s specification and/or performance requirements.

6.0 Packaging

6.1 Shipping Containers (Cylinders)

A. Acetylene Cylinders

1. Asbestos-free porous filler mass.

2. Brass valve with shell type safety cover.

3. Properly color-coded for acetylene.

4. Cylinder shall be marked in accordance with 29

CFR 1910.102.

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B. Oxygen Cylinders

1. Designed, constructed, tested and maintained in accordance with DOT Specifications and Regulations.

2. Brass valve with shell type safety cover.

3. Properly color-coded for oxygen.

4. Cylinder shall be marked in accordance with 29

CFR 1910.104.

C. Argon and Argon-Carbon Dioxide Mix Cylinders

1. Designed, constructed, tested and maintained in accordance with 49 CFR 107, 171, 172, 173, 177, 178, 179 and 180.

2. Brass valve with shell type safety cover.

3. Properly marked and color-coded for argon or argon mix.

D. Nitrogen Cylinders

1. Designed, constructed, tested and maintained in accordance with DOT Specifications and Regulations.

2. Brass valve with shell type safety cover.

3. Properly color-coded for nitrogen.

6.2 Cylinders shall be transported per DOT regulations and shall be protected from damage during shipment and delivery.

The delivery manifest shall include the purchase order

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p. 8 of 9 Effective Date: TBD

Table 1: WELDING AND INERT GASES SPECIFICATIONS

GAS DESCRIPTION SPECIFICATION

1. Acetylene

Purity Minimum 99.5% Boiling Point -84.0°C Specific Gravity 0.91 at 70°F Specific Volume 14.5 cu ft/lb at 60°F CAS Registry Number 74-86-2

2. Oxygen

Purity Minimum 99.9% Specific Gravity 1.105 at 70°F Specific Volume 12.1 cu ft/lb at 70°F CAS Registry Number 7782-44-7

3. Nitrogen

Purity Minimum 99.9% Specific Gravity 0.967 at 70°F Molecular Weight 28.01 Solubility in Water 0.023% at 32°F CAS Registry Number 7727-37-9

4.

Argon- Carbon

Dioxide Mix

Mixture 25% Carbon Dioxide 75% Argon

Purity Minimum 99.9% Specific Gravity 1.38 at 70°F Molecular Weight 39.95 Solubility in Water 0.056

CAS Registry Numbers Carbon Dioxide 124-38-9

Argon 7440-37-1 Valve CGA 580

5. Argon

Purity Minimum 99.9% Specific Gravity 1.38 at 70°F Molecular Weight 39.95 Solubility in Water 0.056 CAS Registry Number 7440-37-1 Valve CGA 580

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Table 2: DELIVERY LOCATIONS

Operating Facility Address

East Dallas Bus Operating Facility 4127 Elm Street Dallas, Texas 75226

East Dallas Body Shop 4127 Elm Street Dallas, Texas 75226

Northwest Bus Operating Facility 2424 Webb Chapel Extension Dallas, Texas 75220

Central Support Bus Operating Facility 4209 Main Street Dallas, Texas 75226

South Oak Cliff Bus Operating Facility

(SOCBOF)

3422 East Kiest Boulevard Dallas, Texas 75028

Oak Cliff (Non-Revenue Vehicle [NRV]) 1200 East Jefferson Boulevard Dallas, Texas 75203

Central Rail Operating Facility (CROF) 3021 Oak Lane Dallas, Texas 75226

Northwest Rail Operating Facility

(NWROF)

9717 Abernathy Avenue Dallas, Texas 75220

Rowlett - WSA 4817 Rowlett Road Rowlett, Texas 75088

6.0 Packaging