Ostds exam

PRESENTATION CONCEPT EXAMPLES

1. Using the information given determine the following: SHWT, redox feature(s), or if these features exist at all. The location of the site is Daytona Beach, FL.

10YR 3/1 FS 0-3” 10YR 5/2 FS 3-7” 10YR 6/4 FS 7-22” 10YR 6/8 FS 22-53” 10YR 8/6 FS 53-72” Remarks: Approximately 5% diffuse mottling beginning at 60”, mottle color is 7.5YR 8/6. 2. Using the information, establish the correct indicator used to determine the SHWT. Location of

site is in Panama City, FL (Florida Panhandle). N 2.5/ Muck 0-0.25” (<1cm) N 3/1 Mucky FS 0.25-6” 5B 6/1 SC 6-31” 10B 7/1 C 31-72” 3. Using the information in the soil profile, establish the SHWT and describe indicator used to

determine the SHWT. The location of the site is Tallahassee, FL. 7.5YR 3/2 FS 0-5” 7.5YR 4/2 LFS 5-13” 7.5YR 5/3 FSL 13-28” 7.5YR 5/2 FSL 28-47” 2.5Y 7/2 SCL 47-62” 2.5Y 8/3 C 62-72”

4. Using the information in the soil profile, establish the SHWT and describe indicator used to determine the SHWT. The location of the site is Jacksonville. 10YR 4/2 S 0-4” 10YR 5/3 S 4-9” 10YR 6/4 S 9-18” 10YR 7/1 S 18-72” Remarks: Many diffuse mottles of 10YR 4/4 exist at 6-8”. Common diffuse mottles of 10YR 7/8 exist at 45-72”

5. Using the information in the soil profile, establish the SHWT and describe indicator used to determine the SHWT. The location of the site is in Ft. Myers (SW Florida). 5Y 2.5/1 LFS 0-5” 5Y 5/1 LFS 5-8” 2.5Y 2.5/1 LFS 8-11” 2.5Y 4/1 LFS 11-24” 7.5YR 2.5/1 Spodic 24-41” 5Y 7/1 FS 41-72 Remarks: Many diffuse mottles of 10YR 4/4 exist from 5-8”. Soil horizon from 8-11” is almost 100% coated with organics when viewed with naked eye.

6. Using the information given determine the SHWT and redox feature(s), or if these features exist at all. The location of the site is Lakeland, FL (Central FL). Site is in a flat area. Vegetation consists of Bay trees, wax myrtle, red maple. 10YR 2/1 FS 0-5” 10YR 4/1 FS 5-9” 10YR 5/2 FS 9-19” 10YR 6/2 FS 9-19” 10YR 7/1 LVFS 19-35” 10YR 8/2 LVFS 35-72” Remarks: The layer from 9-19” is splotchy and has 25% of the lighter color.