The Day of and Beyond: Lessons from an Historic Storm (and How to Plan for the Next One) September 11, 2014

Transcription

1 9/23/2014 The Day of and Beyond: Lessons from an Historic Storm (and How to Plan for the Next One) September 11,

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3 Upper Thompson Sanitation District Formed in Employees ~ 6,500 Connections (YMCA and RMNP) + 10,000 people (seasonal) Separate from the Town and the Estes Park Sanitation District To RMNP District Service Area N 3

4 2 MGD WWTF Thompson River Lift Station (TRLS) 4

5 Fish Creek Lift Station (FCLS) Collection System N 95 miles of Mains and 2,000 MHs 5

6 2013 Flood Timeline September 11 th to 14 th Heavy Rain Over Extended Period Ongoing Communications with Staff Tough Decisions Required at WWTF and LS s Event Rainfall Depths Duration Rainfall (inches) NOAA Reccurence Interval (years) 10-day > 1, hour 8.02 > 1,000 6-hour to hour to 25 Source: Draft Hydrologic Evaluation of the Big Thompson Watershed Post September 2013 Flood Event, Jacobs, April

7 Fish Creek Road In Addition to Rain! Fish Creek Corridor o Beaver Dam Failure o Lily Lake Dam Release o Scott Pond Dam Failure o Road Crossing / Driveway Failures Fall River Corridor o Road Crossing / Driveway Failures 7

8 Mud Slide Along Route 7 Big Thompson River 8

9 Fall River Road Fall River Road 9

10 October 2011 N October 2013 N 10

11 Where Do We Begin? Upper Thompson Sanitation District Immediate Response (Week 1 and 2) Damage Assessment Road Closures Piping Corridor Failures ~ 2,000 Customers Evacuation Center and School without Service Businesses Closed / Weddings Canceled 11

12 No Flush Order Advantages of GIS and Model Flow Data Manhole Location and Numbering Pipe Data Customer Address Sub-basins Identified 12

13 Fish Creek Road 13

14 Fish Creek Road Fish Creek Road 14

15 Fish Creek Road Manhole Pipe Filled with Gravel 15

16 Manhole Sand Removal Fish Creek Manhole 16

17 Fish Creek Road Damage Damaged Sewer Trench 17

18 Flow Diverted at Bridge Damage Near Cheley Camp 18

19 Condos on Fall River (During) Condos on Fall River (After) 19

20 Immediate Response Summary Meetings! Communications Portable Toilets WWTF, TRLS, and FCLS Sept 16 th Staff Assessing Damage Posting No Flush Notices COWARN System Request FEMA Category A / B Fish Creek Emergency Piping 20

21 Fall River Emergency Piping 21

22 Fall River Emergency Piping Short Term Lessons Exhaustion, Personal Responsibilities Safety Action Plans Contracting Methods Materials and Equipment Back-up Plans Communication and Documentation is Key! 22

23 Long Term Considerations Temporary Holding Tanks Temporary Treatment Units Temporary Piping Heading into Winter Spring Runoff Private Properties Future Events FEMA Category F - Utilities Fish Creek Temporary Piping 23

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26 Long Term Lessons Project Worksheet Preparation Funding Alternatives to Replacement Agency Coordination Permitting Requirements Documentation Post Project Audits Communications! 26

27 Where Are We Now? Ongoing Public Information Agency Involvement FEMA, FHWA, CDOT, Local IGA Town, County, EVRPD Federal Regulations Apply Grant Monies Construction 2014/2015 Public Wants Complete How to Plan for the Next One? What happens if the phones / roads are out? Do you have a flushing / vac truck available? What if the roads are out? Do you have back-up materials, fill, tools? Who can you ask for help? Don t be afraid? Reach out to regulators, associates, community, CoWarn Be aware of false information and incorrect paths! Stay focused! 27

28 Emergency Planning Recognize Staff Needs Document, Document Reach out to Customers / Regulators Get Help / Recognize Limitations Community Begins Today! SDA EPSD EVRPD COWARN Larimer County Town of Estes Park Town of Granby Thank You! CDPHE USACOE FEMA EPA Granby Water and Sanitation District Eagle River Water and Sanitation District Littleton/Englewood Wastewater Western Summit Constructors USBR Customers Hydro Construction State of Colorado 28

29 Websites Questions? Chris Bieker, (970) Linda Glesne, (303) Steve Ravel, (303)