What is the fastest completion time of the project with activity lengths (in days) and precedence requirements as shown in the table? 
Definitions:
Discretionary Income
The amount of an individual's income that is left for spending, investing, or saving after taxes and personal necessities are accounted for.
Alternative Firms
Companies that offer non-traditional or unconventional products, services, or methodologies as compared to mainstream options.
Riparian Owner
An individual or entity that owns land adjoining a river or stream, with certain rights and responsibilities regarding water usage and protection.
Natural Stream
A watercourse that flows naturally without human intervention, which can include rivers, brooks, creeks, and rills.
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