Bayou Preservation Association Water Quality Investigation ... · PDF fileBayou Preservation...
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Bayou Preservation Association Water Quality
Investigation: 2013
Primary Investigators: Kyle Denny, Russell Clark, and Steve Hupp
Assistant Investigators: Jacquelyn Buskop, Diana Lopez, Eric Ruckstuhl
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Problem Many of Harris County’s bayous and waterways are
out of compliance for fecal contamination indicator bacteria (E. coli) for contact recreation. (126 colony forming units(cfu) per 100 ml)
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•Top 10 “Most Wanted” Streams as identified by BIG Annual Report, based on 7 yr rolling geomean
•Monitoring data for last year at and upstream of “Most Wanted” spots
Using Existing Information
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Why E. coli? Where does it come from? • Escherichia coli (E. coli) is a bacterium found in
the gut of warm-blooded animals (including humans)
• E. coli is used as an indicator bacteria species for fecal contamination
• Pollution sources can be wildlife, pets, agricultural use, birds, human waste, sewage treatment/collection
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Objectives • Collaborate with the Bacteria Implementation
Group(BIG) Implementation Plan (I-Plan) by adding further study and data collection on impaired waterways.
• Search out possible nonpoint source and point source pollutants
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What Data Did We Collect? Quantitative Collections �E. coli �Water Temperature �Dissolved Oxygen �Salinity �Conductivity �pH �Nitrate �Chlorine (total) �Secchi Tube Depth �Turbidity (FNU)
Qualitative Observations �Present Weather �Water Flow �Water Conditions �Algae Cover �Water Color �Water Clarity �Water Odor
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YSI Probe • Water Temp • Dissolved Oxygen • Salinity • Conductivity • pH • Nitrates
Turbidity Meter (FNU) Chlorine Colorimeter Secchi Tube Coliscan EasyGel
Materials & Probes
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1. Collect Data a. YSI b. Turbidity c. Secchi d. Chlorine e. E. coli f. GPS location
2. Plate samples a. 3 dilutions (1ml, 2ml, 5ml)
3. Count results in 28 hrs
Procedure
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Hunting Bayou Watershed
Schramm Gully
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• Last year BPA found 3 potential sources in Schramm Gully and reported to City of Houston o Schramm Gully went from #2 "Most Wanted"
to #8 o Success!!
• One of the same pipes was leaking this year
from 2012 to 2013
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Greens Bayou Watershed
P-133, and tributaries of P-133
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• # 6 on the BIG's "Top Ten Most Wanted" list; station #16676
• Mean: 9,050 cfu • Geometric mean: 2,810 cfu • Has both Waste Water Treatment
Facilities (WWTF) and On Site Sewage Facilities (OSSF)
Unnamed Tributary of Greens Bayou (P-133)
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1 2 3
4
5
Where We Sampled
1) WWTF: 0 cfu 2) U.S. P133-02: 37 cfu 3) P133-02: 777 cfu 4) D.S. 59: 470 cfu
5) Edmonds Park: 317 cfu
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23 OSSFs North
Why are we getting these numbers?
Dry during sampling
Underground
Waste Water Treatment Facility
Monitoring Station
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Brays Bayou Watershed
Bintliff Ditch, Mimosa Ditch
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1 2 3 4 5
• #5 on the BIG I-Plan; station #18691 • Mean: 11,246 cfu • Geometric Mean 2,904 cfu • Reported to the TCEQ
Mimosa Ditch
1) Ferris: 6,467 cfu 4) Newcastle: 3,697 cfu 2) S. Rice: 16,300 cfu 5) WWTF: 80 cfu 3) 610 Loop:1,280 cfu
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• The #2 spot listed on the BIG’s “Top 10 Most Wanted”
• Mean: 17,024 cfu • Geometric Mean: 4,250 cfu • Two branches upstream of the Houston Health
sample site; station #18690 (D-133 & D-133-01) • "Followed the bacteria" upstream
Bintliff Ditch (D-133)
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1) Brays: 4,570 cfu
2) Fondren: 9,357 cfu
3) Beechnut: 296 cfu
D-133-01
2
3
1
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1
2 3
Bracketing
1)Romney: 123 cfu
2)Braeburn Valley: 10,250 cfu
3)Bonhomme:
6,467 cfu
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What was done?
1
2
1) Romney: 221 cfu
2) Braeburn Valley: 1,226 cfu
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• Schramm Gully: #2 to #8; City of Houston will address the issue further
• Greens watershed: Needs further investigation; unsure of results
• Mimosa Ditch: Reported to TCEQ • Bintliff Ditch: Reported; resolved by City
of Houston
Conclusions
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• Jean Wright • Todd Running • Bill Hoffman • Tom Ivy • Carol LaBreche • Kim Laird • Lisa Groves • Jacqueline Buskop • Diana Lopez • Jason Iken • Alisa Max • BPA Board Members and Staff
Special Thanks to...
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Questions???