Reportable Segments

We manage our operations under two reportable segments. Our GSG reportable segment primarily includes activities with U.S. government clients (federal, state and local) and all activities with development agencies worldwide. Our CIG reportable segment primarily includes activities with U.S. commercial clients and all international activities other than work for development agencies. Additionally, we will continue to report the results of the wind-down of our non-core construction activities in the Remediation and Construction Management ("RCM") segment. As of March 31, 2019, there was no remaining backlog for RCM as the projects were complete.

GSG provides consulting and engineering services primarily to U.S. government clients (federal, state and local) and development agencies worldwide. GSG supports U.S. government civilian and defense agencies with services in water, environment, infrastructure, information technology, and disaster response and recovery planning services. GSG also provides engineering design services for municipal and commercial clients, especially in water infrastructure, solid waste, and high-end sustainable infrastructure designs. GSG also leads our support for development agencies worldwide, especially in the United States, United Kingdom, and Australia.

CIG provides consulting and engineering services primarily to U.S. commercial clients and international clients, both commercial and government. CIG supports commercial clients across the Fortune 500, oil and gas, energy utilities, manufacturing, aerospace, and mining markets. CIG also provides infrastructure and related environmental and geotechnical services, testing, engineering and project management services to commercial and local government clients across Canada, in Asia Pacific (primarily Australia and New Zealand), as well as Brazil and Chile.

Management evaluates the performance of these reportable segments based upon their respective segment operating income before the effect of amortization expense related to acquisitions, and other unallocated corporate expenses. We account for inter-segment revenues and transfers as if they were to third parties; that is, by applying a negotiated fee onto the costs of the services performed. All significant intercompany balances and transactions are eliminated in consolidation.

Reportable Segments

The following tables summarize financial information regarding our reportable segments:



	Three Months Ended						Six Months Ended
	March 31, 2019			April 1, 2018			March 31, 2019			April 1, 2018
	(in thousands)
Revenue
GSG	$	417,526		$	406,027		$	829,497		$	848,799
CIG	322,458			309,704			640,252			641,217
RCM	(4,645		)	1,480			(3,192		)	8,286
Elimination of inter-segment revenue	(12,718		)	(16,949		)	(26,505		)	(38,292		)
Total	$	722,621		$	700,262		$	1,440,052		$	1,460,010

Income from operations
GSG	$	44,803		$	34,177		$	82,217		$	73,302
CIG	20,869			18,400			47,968			39,693
RCM	(5,938		)	(489		)	(5,934		)	(1,647		)
Corporate ⁽¹⁾	(12,189		)	(9,372		)	(20,995		)	(20,043		)
Total	$	47,545		$	42,716		$	103,256		$	91,305

⁽¹⁾ Includes amortization of intangibles, other costs and other income not allocable to our reportable segments.



	March 31, 2019		September 30, 2018
	(in thousands)
Total Assets
GSG	$	524,796	$	468,010
CIG	410,918		478,197
RCM	17,213		25,683
Corporate ⁽¹⁾	998,938		987,531
Total	$	1,951,865	$	1,959,421

⁽¹⁾ Corporate assets consist of intercompany eliminations and assets not allocated to our reportable segments including goodwill, intangible assets, deferred income taxes and certain other assets.