1. Hickahala Creek Pipeline Protection Project at milepost 347.64 Tate County, Senatobia, MS (Looking across and upstream in this view) Designed jointly by Submar, Inc & River Research and Design, Inc, Installed, & Monitored by: Submar Incorporated 805 Dunn St., Houma, LA www.R2D-ENG.com www.Submar.com

2. Arresting an active headcut at the downstream end of the ACM

3. July 2004 Looking US 10 months after project completion, veg looking good, note mat has arrested a small headcut

4. LOOKING US, JULY 2004 April 2005 ACM is acting as a “hinged” grade control structure Looking US 1 year later, headcut of similar size as 2004

5. LOOKING US, JULY 2004 April 2006 Another year later, ACM is acting as a “hinged” grade control structure (adjusting to bed lowering due to headcut)

6. LOOKING US, JULY 2004 April 2006 Submar ACM system has arrested a larger headcut

7. LOOKING US, JULY 2004 March 2007 1-year later, larger headcut arrested by Submar mat

8. April 2007 Note uneven DS edge of adjusting mat. Pipeline still well protected.

9. January 2008 Approximately 14 ft of mat left until headcut gets back to the pipeline. Pix by Lloyd Falgout

10. March 18, 2009 A more uniform adjustment of the mat to the headcut, but still approximately 14 ft until the headcut gets back to the pipeline. Pix by Derrick

11. March 18, 2009 Looking perpendicular to flow at ACM adjusting to stabilize the headcut. Pix by Derrick

12. Always carry your best friend to the formal!! Cleophus (as a puppy) Rules!!!