SELECT SUM(design_flow__lpm_) FROM table_name_6 WHERE partner = "app" AND construction_start = "2008 january" AND population_served > 3500
Berapa total aliran desain (LPM) dengan mitra APP, awal konstruksi 2008 Januari, dan populasi yang melayani lebih besar dari 3500?
CREATE TABLE table_name_6 (design_flow__lpm_ INTEGER, population_served VARCHAR, partner VARCHAR, construction_start VARCHAR)