–    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