Ostds exam
Material for Certification for Ostds exam:
-http://www.floridahealth.gov/environmental-health/onsite-sewage/training/accelerated-certification-training.html
-I will need somebody on the some day to do the exam with me
OSTDS CERTIFICATION SAMPLE QUESTIONS
1. With no dig out and replacement of soil, the depth of satisfactory soil
beneath the bottom of the trench or absorption bed must extend to:
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B) 42 inches
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D) 72 inches
2. A continuous circuit arrangement of drain lines is required for:
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B) a mounded trench system
C) all systems
D) not required for any system
3. Which of the following is exempt from septic tank contractor
registration?
A) state licensed general contractors
B) state licensed plumbers
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D) all of the above
4. A master septic tank contractor may cover a system repair when:
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B) the department is not on site to conduct an inspection within 30
minutes of the scheduled time.
C) the master septic tank contractor is not physically on site.
E) the department has performed an inspection and notified the
contractor of violations.
F) the master septic tank contractor does not conduct the inspection.
5. The State of Florida requires connection to available sewer systems.
Who may waive this requirement?
A) the local building department
B) the sewer system owners with Department of Health approval
C) the applicant for financial hardship considerations
D) the requirement may not be waived
The answer to all of the questions is (B).
Study Hints:
Know your setbacks, system sizing requirements, and septage disposal standards before you come to
the class. 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. HOMEWORK/PRACTICE Instructions: Indicate if an excavation is an option. If yes determine the elevation of the bottom of the drainfield in reference to grade if an excavation is performed. Also indicate the elevation of the bottom of the drainfield in reference to grade if an excavation is not performed. 1) 10YR 4/1 FS 0-5 10YR 7/1 FS 5-18 10YR 5/6 CMN/PROM/RF 10-18 10YR 2/1 SPODIC 18-20 7.5YR 3/2 SPODIC 20-25 10YR 2/1 SPODIC 25-30 7.5YR 4/4 FS 30-37 10YR 6/2 FS 37-41 10YR 7/3 SCL 41-60 10YR 6/2 LS 60-72 WSWT 10 2) 10YR 2/1 FS 0-4 10YR 6/1 FS 4-20 10YR 7/1 STRIPPING 10-18 10YR 7/1 FS 20-25 N 6/0 SCL 25-39 5Y 6/1 SL 39-72 WSWT 10 3) 10YR 2/1 MUCK 0-11 10YR 6/2 FS 11-17 REFUSAL @ 17 Hole caving in due to water WSWT 0 4) 10YR 2/1 FS 0-2 10YR 7/3 FS 2-15 10YR 7/1 STRIPPING 10-15 10YR 3/2 SPODIC 15-17 7.5YR 3/2 SPODIC 17-25 10YR 6/4 FS 25-29 10YR 2/1 SPODIC 29-33 7.5YR 3/2 SPODIC 33-42 REFUSAL @ 42 Hole caving in due to water WSWT 10 5) 10YR 2/1 FSL 0-5 10YR 4/1 FSL 5-12 10YR 4/1 SCL 12-38 10YR 5/2 SCL 38-56 10YR 7/1 FS 56-72 Notes: 10YR 7/1 CMN/DIST RF starting at 12 WSWT 12 Instructions: Below are readings using the laser transit. Determine the elevation, in inches, of the proposed system site in reference to the benchmark. Indicate if the proposed system site is above or below the benchmark. 1) Benchmark 13 Proposed System Site 33 2) Benchmark 42 Proposed System Site 29 3) Benchmark 06 Proposed System Site 110 4) Benchmark 22 Proposed System Site 26
