II_1 ATTACHMENT C - WCAG 2.0 Guidelines.docx

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LB&I International Tax Modeling Tool
Solicitation number
2032H520R00039
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This document outlines requirements for a commercial off-the-shelf software tool to enable scenario modeling of international tax provisions. The Internal Revenue Service seeks a tool that allows employees to perform modeling of U.S. international tax provisions, including those of the Tax Cuts and Jobs Act. Interested vendors must submit quotes by 2:00 PM Eastern on September 3, 2020 under solicitation number 2032H5-20-R-00039. The associated NAICS code is 511210. The period of performance consists of a 12-month base period and two 12-month option periods. Compliance with WCAG 2.0 accessibility guidelines at Levels A and AA is required, with encouragement to meet Level AAA standards.

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As the standard way to achieve Section 508 compliance, Contractor shall adhere to the applicable Web Content Accessibility Guidelines (WCAG) 2.0 Levels (A) and (AA). Contractor is encouraged to achieve Level (AAA) to increase accessibility and usability beyond the minimum level. Achieving Level (AAA) guarantees previous levels are met and the highest effort possible was put forth to include all types of users, assistive technology, browsers, and platforms.

WCAG provides guidelines, criteria, and techniques to achieve compliant Section 508 output via levels (AA) and (AAA). The full guidelines are located at: http://www.w3.org/TR/WCAG20 Contractor shall abide by the specific sections located at: http://www.w3.org/TR/WCAG20 under the following guidelines:

• WCAG 2.0 Summary Guidelines

• Guideline 1.1 Text Alternatives: Provide text alternatives for any non‐text content so that it can be changed into other forms people need, such as large print, Braille, speech, symbols or simpler language.

• Guideline 1.2 Time‐based Media: Provide alternatives for time‐based media.

ACQUISITION SENSITIVE INSTRUCTIONS TO OFFERORS

FOR OFFICIAL USE ONLY INTEGRATED ENVIRONMENTAL HEALTH AND SAFETY SYSTEM (IEHSS) 8

• Guideline 1.3 Adaptable: Create content that can be presented in different ways (for example simpler layout) without losing information or structure.

• Guideline 1.4 Distinguishable: Make it easier for users to see and hear content including separating foreground from background.

• Guideline 2.1 Keyboard Accessible: Make all functionality available from a keyboard.

• Guideline 2.2 Enough Time: Provide users enough time to read and use content.

• Guideline 2.3 Seizures: Do not design content in a way that is known to cause seizures.

• Guideline 2.4 Navigable: Provide ways to help users navigate, find content, and determine where they are.

• Guideline 3.1 Readable: Make text content readable and understandable.

• Guideline 3.2 Predictable: Make Web pages appear and operate in predictable ways.

• Guideline 3.3 Input Assistance: Help users avoid and correct mistakes.

• Guideline 4.1 Compatible: Maximize compatibility with current and future user agents, including assistive technologies.

The Section 508 Test plan shall be completed and submitted to the IRS upon the delivery of the technical solution as described in the Statements of Objectives.

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