(ATCScript "Constants4Lead"
  (Set PerConstituent "LEAD-POQUAL")
  (Set ImpConstituent "LEAD-SOQUAL")                                   (Set PerImpConv "1.0") (Set PerImpUnits "lbs/acre") ('month is implied time step)
  (Set RchConstituent "LEAD-TROQAL")                                   (Set RchConv    "1.0") (Set RchUnits         "lbs") ('month is implied time step)
  (Set PtConstituent  (Array "PBTOTL" "DQAL3" "SQAL23" "SQAL33"))      (Set PtConv     "1.0") (Set PtUnits    "lbs/month") (Set PtScenario    "PT-OBS")
                                                                       (Set AreaUnits      "acres")
                                                                       (Set TotalUnits       "lbs")
  (Set HspfAggregation "Sum")
)