-    party a regulated party
-    agency violated person’s legal rights (APA  702 provides standing to “a person suffering legal wrong”)
-    Test (See Lujan)
-    Injury-in fact
-    must be particularized (See Sierra Club; Lujan)
-    aesthetic, conservational and recreational count (Sierra Club)
-    injury need not be tied to legal claim (See Duke Power)
-    relevant injury is to P (See Laidlaw – no injury to environment)
-    unlikely to allow taxpayer challenges (See Richardson) except under Establishment Clause (See Flast)
-    NOT generalized grievance
-    Causation  – injury “fairly traceable” to challenged conduct
-    Redressability – remedy will redress injury
-    no standing to seek injunction if violation in past (Steel Co.) or not likely to be subject to policy in future (Lyons)
-    Interest “arguably within the zone of interests” regulated or protected by statute (Nat. Credit Union)
-    intent of congress irrelevant (Nat. Credit Union)
-    Citizen  suit provisions override prudential limits but still need to meet constitutional reqs (See Lujan)
-    Can’t assert 3rd party rights
-    Associational standing (Hunt test)
-    members have standing to sue
-    interests are within association’s purpose
-    litigation will not be adversely affected by lack of individual Ps