| PSC | Description
|
| F001 | Aerial fertilization - spraying |
| F002 | Aerial seeding |
| F003 | Forest-range fire suppression |
| F004 | Forest-range fire rehabilitation |
| F005 | Forest tree planting |
| F006 | Land treatment practices |
| F007 | Range seeding - ground eq |
| F008 | Recreation site maint/non-constr |
| F009 | Seed collection-production |
| F010 | Seedling production-transplanting |
| F011 | Surface mining reclam/non-constr |
| F012 | Survey line clearing |
| F013 | Tree breeding |
| F014 | Tree thinning |
| F015 | Well drilling - exploratory |
| F016 | Wildhorse-burro control |
| F018 | Other range-forest improv/non-const |
| F019 | Other wildlife management |
| F020 | Fisheries res mgmt |
| F021 | Site preparation |
| F099 | Other nat res mgmt & conserv |
| F101 | Air quality sup |
| F102 | Ind invest surv/tch sup |
| F103 | Water quality sup |
| F104 | Ind invest surv/tch sup |
| F105 | Pesticides sup |
| F106 | Toxic subst sup |
| F107 | Harz subst analysis |
| F108 | Harz remv/clean-up/disp/op |
| F109 | Leak undergrnd store tank sup |
| F110 | Dev envir impact stmt/assess |
| F111 | Mult pol ind invst surv/tech sup |
| F112 | Oil spill response |
| F999 | Other envir svc/stud/sup |