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Aas chemical monitoring ppt
 

Aas chemical monitoring ppt

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    Aas chemical monitoring ppt Aas chemical monitoring ppt Presentation 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 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
    • 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 OxygenAdopt-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 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
    • 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 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
    • 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