Rolls for navigating to the roof of the 4 story building, assuming each floor constitutes an "area" per the AtE2 rules. Let's hope it's structurally sound.

(3d6)[11] vs Urban Survival 10
(3d6)[14] vs Urban Survival 10
(3d6)[14] vs Urban Survival 10
(3d6)[7] vs Urban Survival 10

And if Lemus makes it safely, a check to spot details of the gas station from his vantage point.

(3d6)[10] vs Observation 10