Monroe County Canal Restoration Demonstration Project Updates BOCC Canal Restoration Workshop April 11, 2016

2 Canal Management Master Plan 1. Comprehensive County-wide mapping of residential canals and creation of a database 2. County-wide water quality assessment of residential canals which included dissolved oxygen measurements 3. Developed water qualify classifications 4. Prioritized canals based on need for water quality improvement 5. Identified potential restoration technologies for each canal DID NOT DEVELOP CONCEPTUAL DESIGNS, COSTS OR SCHEDULE FOR IMPLEMENTATION Good171 Fair180 Poor131 Water Quality Classifications

3

4 1. Restoration consisted of placing 900 Truckloads of clean fill (26,000 cy) to raise canal bottom from -35 feet Mean Low Water (MLW) to -7.7 feet MLW 2. Project started March 5, 2015 and completed July 3, Benefits: DO readings were below the standard 98% of the time before the restoration but after they were above the standard 100% of the time; return of sea life, revegetation of canal bottom

5 BeforeAfter

6

7 Culvert Installation Project Tropical Bay Estates, Big Pine Key Update on Canal #277 Culvert Installation Project Tropical Bay Estates, Big Pine Key

8

9 Other Demonstration Project Updates

10 Summary of $5 Million Demonstration Project Budget ProjectsCommittedIn Process  Demo Selection, Homeowner Approvals, Design, Permit, Construction Engineering Inspections $ 874,947  Backfilling Project – Sexton Cove, Key Largo $ 1,360,000  Culvert Installation – Geiger Mobile Homes, Geiger Key ($100,000 additional paid by DEP) $ 121,000  Organic Removal – Drs. Arm & Ave J, Big Pine Key $ 1,901,804  Culvert Installation – Tropical Bay, Big Pine Key (BPK) ($50,000 additional to be paid by DEP) $ 373,957  Air Curtains w/2 years O&M – Drs. Arm & Atlantic Estates, BPK $ 303,084  Monroe County Permitting Fees$ 28,222  Pumping System w/O&M – Eden Pines, BPK (estimated) On Hold  Culvert Installation – Boca Chica Ocean Shores, Geiger Key On Hold TOTAL COMMITTED: $4,963,014 BUDGET REMAINING: $36,986

11 Questions? Picture courtesy of Michael Blondin