Physical Parameters AssessmentInvestigator Name(s): Team Evolution (Chase Rosenberg)Collection Date & Time: Wednesday, May 13, 2015 - 10:45amSchool: Edmunds Middle SchoolWatershed: Lake Champlain Direct & Grand Isle BasinsRiver: Potash Brook (Lake Champlain Direct Flow)Monitoring Site: Potash Brook - water treatment siteSurrounding Development or Land Use: ParkResidentialRoad Along BankIs there a water treatment plant upstream?: YesCanopy Cover: 76-100%Water Appearance: ClearAverage Embeddedness: 26-50%Average Velocity: 0.63m/sExact LocationLatitude: 44.45Longitude: -73.21WeatherPresent: OvercastPast 48 Hours: Clear/SunnyOvercastShowersSteady RainHeavy Rain Chemical AssessmentAverage Temperature: 11.00°CAverage pH: 7.30Average Orthophosphate PO4-3: 0.13mg/LAverage Dissolved Oxygen: 10.00mg/L Stream Habitat AssessmentStreambed Composition: Mixture of cobbles, gravels, and sand (3)Streambank Stability: Moderately stable banks – some areas of erosion visible (1)Deepest pool is at least: Waist deep (2)Velocity: Fast – quickly takes objects downstream (2)Riparian Vegetation: Mixture of trees, shrubs, and grasses (3)Riparian Vegetative Zone Width: Buffer zone is between 25 and 50 feet (1)Streambed CoverRock ledges: 0Submerged logs, stumps, or tree roots: 1Large rocks: 0Artificial objects: 0Other: 0Stream Habitat Quality ScoreCalculated by adding all of the points from the above fields. 18-22 (Excellent) 11-17 (Good) 6-10 (Fair) 0-5 (Poor)Stream Habitat Quality Score for This Report: 13 Biological AssessmentPT Group 1 (Intolerant)# of Taxa: 5PT Group 2 (Moderately Intolerant)# of Taxa: 5PT Group 3 (Fairly Tolerant)# of Taxa: 0PT Group 4 (Very Tolerant)# of Taxa: 0Pollution Tolerance Index RatingCalculated as follows: 4*(# of Taxa in PT Group 1) + 3*(# of Taxa in PT Group 2) + 2*(# of Taxa in PT Group 3) + 1*(# of Taxa in PT Group 4) 23+ (Excellent) 17-22 (Good) 11-16 (Fair) 0-10 (Poor) PTI Rating for This Report: 35.00