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PSI is a prime contractor on the GSA One Acquisition Solution for Integrated Services (OASIS) multiple-award, Indefinite Delivery Indefinite Quantity (IDIQ) contract. Through GSA OASIS, PSI provides flexible and innovative solutions across an extensive range of complex professional services. GSA OASIS can be used by all federal civilian and Department of Defense (DoD) agencies to fulfill their mission critical needs.

PSI Contract Numbers

Pool 1 Unrestricted / 47QRAD20DU138

The core disciplines of the GSA OASIS contract include program management services, management consulting services, logistics services, engineering services, scientific services, and financial services.

PSI Duns Number: 603571613GSA OASIS features

  • 10-year period of performance with no contract vehicle ceiling

  • Flexibility for all contract types, including hybrids and cost-reimbursement, at the task order level

  • Allows for ancillary support services, including IT, at the task order level

  • Price Estimation Tool to develop IGCE for labor estimates for 640 geographic locations, based off BLS direct rates and average OASIS awardee indirect rates

  • Tiered access fee ranging from 0.10% - 0.75% based on obligation level

  • Applicable NAICS codes

  • 541330 – Engineering Services

  • 541360 – Geophysical Surveying and Mapping Services

  • 541370 – Surveying and Mapping (Except Geophysical) Services

  • 541380 – Testing Laboratories

  • 541611 – Admin. Management and General Management Consulting Services

  • 541612 – Human Resources Consulting Services (2007), Human Resources and Executive Search Consulting Services (2002)

  • 541613 – Marketing Consulting Services

  • 541614 – Process, Physical Distribution, and Logistics Consulting Services

  • 541618 – Other Management Consulting Services

  • 541620 – Environmental Consulting Services

  • 541830 – Media Buying Agencies

  • 541840 – Media Representatives

  • 541850 – Outdoor Advertising

  • 541860 – Direct Mail Advertising

  • 541870 – Advertising Material Distribution Services

  • 541890 – Other Services Related to Advertising

  • 541910 – Marketing Research and Public Opinion Polling

  • 541990 – All Other Professional, Scientific, and Technical Services

Additional information

Contract Number:

Contract Profile

Type: Multiple Award IDIQ
CAGE Code: 0PS84

47QRAD20DU138 PS-A829

Task Order Type:
Fixed Price (FPI, FPAF)


Time and Material and Labor Hour

Task orders must be solicited and awarded prior to the OASIS term expiring and may extend for up to 5 years after the OASIS term expires.

OASIS Email:

Point of Contact:
Carrie Donat
(703) 575-7502

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