1. Southern Resources Mapping Corporation Reliability. Quality. Integrity - Since 1974 COLOR INFRARED FAILING SEPTIC TANK IDENTIFICATION STUDY

2. What is it? How’s it work? Southern Resources Mapping Technology has been around for decades. (EPA report 1985) Color-Infrared (CIR) - vigorous growth = dark red Early spring – Emergent grass Failing septic systems - CIR signature Failure types: Surface:above ground flow Surface:above ground flow Seasonal:indications of wastewater, Seasonal:indications of wastewater, no surface accumulation Seasonal stress:enhanced vegetation Seasonal stress:enhanced vegetation

3. Study Area Southern Resources Mapping Three mile radius of the Lakes of Tuscaloosa (Tuscaloosa, Nicol, Harris) Approx. 167 sq. mi.

4. Procedure Southern Resources Mapping March 19:Acquired CIR photography

5. Southern Resources Mapping 14 flight lines 151 photos at 6,300’ 1”=1000’ Neg scale Each pixel = 0.95’ Each photo = 272MB

6. Procedure Southern Resources Mapping March 19:Acquired CIR photography Mar 19 – May 14:Sample set identification (20 sites)

7. Southern Resources Mapping

9. Procedure March 19:Acquired CIR photography Mar 19 – May 14:Sample set identification (20 sites) May 25:Field inspection of sample set (City and County Health Department)

10. Procedure Southern Resources Mapping Location Classifications Do not mark:Discoloration, but no distinctive pattern Do not mark:Discoloration, but no distinctive pattern Possible Failure:Some evidence of field lines/tank spot Possible Failure:Some evidence of field lines/tank spot Probable Failure:Strong evidence of field lines/tank spot Probable Failure:Strong evidence of field lines/tank spot Likely Failure:Strong evidence of field lines/tank spot Likely Failure:Strong evidence of field lines/tank spot Over-ground flow

11. Procedure Southern Resources Mapping March 19:Acquired CIR photography Mar 19 – May 14:Sample set identification (20 sites) May 25:Field inspection of sample set (City and County Health Department) May 24 – Sept 10:CIR examination and report prep

12. Findings Southern Resources Mapping

13. Findings 47183 Likely Failures Probable Failures Possible Failures CIR investigation found: Health Department investigation: March 7, 2011 3 failing, 1 vacant 4 failing, 2 false positive, 1 vacant Catalogued for future use

14. Findings Southern Resources Mapping Likely Failures – 100% success rate Likely and Probable Failures – 78% success rate Nearly 100% success rate of locating septic systems

15. Southern Resources Mapping Corporation Reliability. Quality. Integrity - Since 1974 COLOR INFRARED FAILING SEPTIC TANK IDENTIFICATION STUDY Questions?