Aas chemical monitoring ppt


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Aas chemical monitoring ppt

  1. 1. Adopt-A-StreamPhysical/Chemical Training Georgia Adopt-A-Stream 4220 International Parkway Suite 101 Atlanta, Georgia 30354 www.GeorgiaAdoptAStream.com 404.675.6240
  2. 2. Georgia Adopt-A-Stream What is it?  Georgia’s volunteer water quality monitoring program Program Goals  To increase public awareness about water quality & nonpoint source pollution  To give citizens the tools & training to protect their watershed  To encourage partnerships between citizens & local government  To collect quality baseline water quality data
  3. 3. Quality Assurance Project Plan Quality Assurance Quality Control (QAQC) Only individuals are certified Certification is valid for one year
  4. 4. To Maintain QA/QC Status,Volunteers Must …Volunteers’ methods and test kits must achieve results within 10%of those obtained by trainerMust sample at least monthly for one year and send the results toGA AASIn the field, monitors must take two samples. These samples must be within 10% of each other. If they are not within 10%, take another sample until two samples are within 10%.Reagents should be replaced annually
  5. 5. What is a Watershed?• A watershed is a system.• It is the land area from which water, sediment, and dissolved materials drain to a common point along a stream, wetland, lake or river.• For each watershed, there is a drainage system that conveys rainfall to its outlet.• Its boundaries are marked by the highest points of land around the waterbody.
  6. 6. What Watershed are You in?
  7. 7. Physical/Chemical Monitoring Physical/Chemical testing allows information to be gathered about specific water quality characteristics Adopt-A-Stream recommends that at least four core measurements be taken:  Temperature  pH  Dissolved OxygenAdopt-A-Stream offers a separate bacteria monitoringcertification workshop
  8. 8. When and How Often? Because water quality conditions change on a daily basis, plan to sample regularly.  At least once a month  Same time and location  Record weather conditions
  9. 9. Recommendations on Where and How to Collect Samples  Measure air and water temperature in the shade, avoid sunlight  For an ideal stream location, take samples mid-stream and mid-depth  Rinse glass tubes or containers twice with stream water before running test
  10. 10. TEMPERATURE Should be measured in the shade, away from direct sunlight. Air temperature should be taken before water temperature. Temperature relates directly to dissolved oxygen levels. The higher the temperature, the less oxygen the water can hold. Also, life adapts to a narrow range of temperatures. Changes of only a few degrees can affect the life in a stream. Temperature affects feeding, respiration, and aquatic metabolism.
  11. 11. DISSOLVED OXYGENNeeded for respiration for all aquatic lifeState Standards for DO levels: Average of 5 mg/L (or ppm) for Georgia streams and a minimum of 4 mg/L Average of 6 mg/L (or ppm) for trout streams and a minimum of 5 mg/LInversely related to temperature:  As temperature increases, DO decreases  As temperature decreases, DO increases
  12. 12. DISSOLVED OXYGEN DO levels may increase due to  diffusion from the atmosphere,  plant metabolism as a waste product of photosynthesis  turbulent mixing (riffles) DO levels may decrease due to  warm temperatures  an overload of decaying organic matter (due to excess nutrients)  slow moving, deep water
  13. 13. pH A measure of hydrogen ions (H+); aquatic organisms are sensitive to pH fluctuations 0-14 scale; pure water has equal amount of H+ and OH- ions and has a pH of 7 Expected range in Georgia: 6-8 Some South Georgia waters may have pH as low as 3.5
  14. 14. pH values of some common substances: 0.0 7.0 14.0 0.5 5.9 8.0 11.2battery acid rainwater salt water ammonia 2.0 7.0 12.9 distilled water lemon juice bleach Do you think that Aquatic Insects & Fish like to live in battery acid or bleach?
  15. 15. Where Do I Submit My Data?• Data should be submitted to the state’s online database: www.GeorgiaAdoptAStream.org• Share your data with partners, local governments and your local Adopt-A-Stream coordinators
  16. 16. Who Might Use My Data?Local water departments, planners, or city councilsColleges, universities, and technical schools use datain reportsForestry services and environmental groups will use itfor analyzing the equality of life in that area as well as areference for future studiesConsulting agencies, local and state government
  17. 17. Just the Facts•Raise awareness ppm or mg/L Once a month•Provide tools and training Dissolved•Encourage partnerships mid-stream, Oxygen•Water quality data (temp., DO) mid-depthData – on-line database, local program, city & county pH 6-8government & municipality, partners, countycommissioners, universities, others? As low as 3.5Conductivity Temperature – importance of,The ability of water to carry a current. where to measure…Is affected by mining, agriculture, sewage effluent,urban runoff. Excess Organic Matter Dissolved Oxygen Higher DO in Causes a decrease in • not lower than 4 with the winter dissolved oxygen an average of at least months levels 5 mg/L or ppm