Aas chemical monitoring pptPresentation Transcript
Adopt-A-StreamPhysical/Chemical Training Georgia Adopt-A-Stream 4220 International Parkway Suite 101 Atlanta, Georgia 30354 www.GeorgiaAdoptAStream.com 404.675.6240
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
Quality Assurance Project Plan Quality Assurance Quality Control (QAQC) Only individuals are certified Certification is valid for one year
To Maintain QA/QC Status,Volunteers Must …Volunteers’ methods and test kits must achieve results within 10%of those obtained by trainerMust sample at least monthly for one year and send the results toGA AASIn 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
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.
What Watershed are You in?
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 OxygenAdopt-A-Stream offers a separate bacteria monitoringcertification workshop
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
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
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.
DISSOLVED OXYGENNeeded for respiration for all aquatic lifeState 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/LInversely related to temperature: As temperature increases, DO decreases As temperature decreases, DO increases
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
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
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?
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
Who Might Use My Data?Local water departments, planners, or city councilsColleges, universities, and technical schools use datain reportsForestry services and environmental groups will use itfor analyzing the equality of life in that area as well as areference for future studiesConsulting agencies, local and state government
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