A large eastern city is requesting federal funding for a park-and-ride project. One of the requirements in the request application is a network plan for the design phase of the project. Catherine Walker, the chief engineer, wants you to develop a project network plan to meet this requirement. She has gathered the activity time estimates and their dependencies shown here. Show your project network with the activity early, late, and slack times. Mark the critical path.

ID
Description
Predecessor
Time
A
Survey
None
5
B
Soils report
A
20
C
Traffic design
A
30
D
Lot layout
A
5
E
Approve design
B, C, D
80
F
Illumination
E
15
G
Drainage
E
30
H
Landscape
E
25
I
Signing
E
20
J
Bid proposal
F, G, H, I
10