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Station Info: NTTA0702

 
Station ID Year Jurisdiction Watershed Location Description     Latitude         Longitude    
NTTA0702 2007 NTTA Elm Fork above Cottonwood Branch Elm Fork at President George Bush Turnpike 32.91335 -96.9382444

Sampled Events

1st Quarter:
Storm
Summary
Storm
Start
Storm
End
Description Rainfall
Station
Rainfall
Total (in)
Peak
Rate (in)
Antecedent Dry
Period (hrs)
1/12/2007 3:35:00 PM 1/12/2007 6:15:00 PM A line of showers and thunderstorms associated with a cold frontal system moving across the metroplex traveling from the northwest NTTA0701 0.49 0.28 203
Collection
Info
Flow
Start
Flow
End
1st Aliquot
Collected
Last Aliquot
Collected
# Aliquots
Collected
Peak
Depth (ft)
Avg
Depth (ft)
Sample
Volume (gal)
Ambient Air
Temp (°F)
Water
Temp (°F)
Sample
Comments
1/12/2007 6:25:00 PM 1/12/2007 8:30:00 PM 1/12/2007 6:25:00 PM 1/12/2007 8:27:00 PM 6 4.73 1.1 3.5 The sampling equipment was removed from the site to avoid potential flooding
Composite TDS
(mg/L)
TSS
(mg/L)
BOD
(mg/L)
COD
(mg/L)
Nitrogen
Total (mg/L)
Phosphorus
Dissolved (mg/L)
Phosphorus
Total (mg/L)
Carbaryl
Total (mg/L)
Arsenic
Total (mg/L)
Chromium
Total (mg/L)
Copper
Total (mg/L)
Lead
Total (mg/L)
Zinc
Total (mg/L)
Diazinon
(µg/L)
Cadmium
Total (mg/L)
155 170 5.19 15.6 1.27 <0.05 U 0.643 *** 0.005 J 0.016 J 0.019 J 0.012 J 0.0421 J <0.037 U <0.001 U
Grab Oil & Grease
(mg/L)
pH Lab
(su)
pH Field
(su)
E.Coli
(col/100mL)
Total Coliform
(col/100mL)
Specific Conductivity
(uS/cm)
  PDF icon  Download Lab Report
<1.4 U 7.52 8.13 <10 U <10 U ***

2nd Quarter:
Storm
Summary
Storm
Start
Storm
End
Description Rainfall
Station
Rainfall
Total (in)
Peak
Rate (in)
Antecedent Dry
Period (hrs)
4/13/2007 6:30:00 PM 4/13/2007 9:30:00 PM A line of showers and thunderstorms associated with a cold frontal system moved across the metroplex traveling from the northwest NTTA0701 0.51 0.42 239
Collection
Info
Flow
Start
Flow
End
1st Aliquot
Collected
Last Aliquot
Collected
# Aliquots
Collected
Peak
Depth (ft)
Avg
Depth (ft)
Sample
Volume (gal)
Ambient Air
Temp (°F)
Water
Temp (°F)
Sample
Comments
4/13/2007 6:50:00 PM 4/13/2007 9:20:00 PM 4/13/2007 6:53:00 PM 4/13/2007 8:55:00 PM 6 3.7 2.8 3.5 The sampling equipment was removed at the conclusion of the sampling activities
Composite TDS
(mg/L)
TSS
(mg/L)
BOD
(mg/L)
COD
(mg/L)
Nitrogen
Total (mg/L)
Phosphorus
Dissolved (mg/L)
Phosphorus
Total (mg/L)
Carbaryl
Total (mg/L)
Arsenic
Total (mg/L)
Chromium
Total (mg/L)
Copper
Total (mg/L)
Lead
Total (mg/L)
Zinc
Total (mg/L)
Diazinon
(µg/L)
Cadmium
Total (mg/L)
354 256 <3 U 24 1.4 <0.05 U 0.392 *** <0.002 U 0.005 J 0.0319 J 0.005 J 0.0777 J <0.037 U <0.001 U
Grab Oil & Grease
(mg/L)
pH Lab
(su)
pH Field
(su)
E.Coli
(col/100mL)
Total Coliform
(col/100mL)
Specific Conductivity
(uS/cm)
  PDF icon  Download Lab Report
3.4 J 7.29 8.1 230 5000 ***

3rd Quarter:
Storm
Summary
Storm
Start
Storm
End
Description Rainfall
Station
Rainfall
Total (in)
Peak
Rate (in)
Antecedent Dry
Period (hrs)
9/4/2007 9:25:00 PM 9/5/2007 5:40:00 AM An area of low pressure brought rain showers across the metroplex moving from the Northwest to the Southeast NTTA0701 2.1 0.94 100
Collection
Info
Flow
Start
Flow
End
1st Aliquot
Collected
Last Aliquot
Collected
# Aliquots
Collected
Peak
Depth (ft)
Avg
Depth (ft)
Sample
Volume (gal)
Ambient Air
Temp (°F)
Water
Temp (°F)
Sample
Comments
9/5/2007 3:35:00 AM 9/5/2007 6:10:00 AM 9/5/2007 3:45:00 AM 9/5/2007 5:48:00 AM The flow end time and date are a result of the sampling equipment being removed at the conclusion of the sampling activites. A software glitch did not allow the collection of sample markers.
Composite TDS
(mg/L)
TSS
(mg/L)
BOD
(mg/L)
COD
(mg/L)
Nitrogen
Total (mg/L)
Phosphorus
Dissolved (mg/L)
Phosphorus
Total (mg/L)
Carbaryl
Total (mg/L)
Arsenic
Total (mg/L)
Chromium
Total (mg/L)
Copper
Total (mg/L)
Lead
Total (mg/L)
Zinc
Total (mg/L)
Diazinon
(µg/L)
Cadmium
Total (mg/L)
300 68.7 5.24 25 1 0.16 J 0.453 *** <0.002 U <0.003 U 0.0156 J 0.009 J 0.0176 J <0.037 U <0.001 U
Grab Oil & Grease
(mg/L)
pH Lab
(su)
pH Field
(su)
E.Coli
(col/100mL)
Total Coliform
(col/100mL)
Specific Conductivity
(uS/cm)
  PDF icon  Download Lab Report
<1.4 U 7.52 7.8 500 18900 ***

4th Quarter:
Storm
Summary
Storm
Start
Storm
End
Description Rainfall
Station
Rainfall
Total (in)
Peak
Rate (in)
Antecedent Dry
Period (hrs)
12/9/2007 8:16:00 AM 12/9/2007 11:50:00 AM Wide spread showers and thunderstorms developed in advance of a cold front moving across the DFW Metroplex in a south southeast direction. NTTA0701 0.53 0.5 337
Collection
Info
Flow
Start
Flow
End
1st Aliquot
Collected
Last Aliquot
Collected
# Aliquots
Collected
Peak
Depth (ft)
Avg
Depth (ft)
Sample
Volume (gal)
Ambient Air
Temp (°F)
Water
Temp (°F)
Sample
Comments
12/9/2007 11:00:00 AM 12/9/2007 3:50:00 AM 12:39:00 PM 2:40:00 PM 6 1.5 1.1 3.5 37 The flow end time and date are a result of the sampling equipment being removed at the conclusion of the sampling activities. The battery was replaced due to a power failure causing the aliquot markers to be incorrectly recorded.
Composite TDS
(mg/L)
TSS
(mg/L)
BOD
(mg/L)
COD
(mg/L)
Nitrogen
Total (mg/L)
Phosphorus
Dissolved (mg/L)
Phosphorus
Total (mg/L)
Carbaryl
Total (mg/L)
Arsenic
Total (mg/L)
Chromium
Total (mg/L)
Copper
Total (mg/L)
Lead
Total (mg/L)
Zinc
Total (mg/L)
Diazinon
(µg/L)
Cadmium
Total (mg/L)
180 52 3.27 1 J <0.05 U 0.07 J 0.23 *** 0.006 J <0.003 U 0.02258 J <0.004 U 0.023 J <0.037 U 0.001 J
Grab Oil & Grease
(mg/L)
pH Lab
(su)
pH Field
(su)
E.Coli
(col/100mL)
Total Coliform
(col/100mL)
Specific Conductivity
(uS/cm)
  PDF icon  Download Lab Report
1.5 J 8.07 8 1190 23000 ***

Station Averages

Station TDS TSS BOD COD Nitrogen Phosphorus
(Dissolved)
Phosphorus
(Total)
Carbaryl Arsenic Chromium Copper Lead Zinc Diazinon Cadmium Oil &
Grease
E.
Coli
Coliform
(Total)
pH
Lab
pH
Field
Specific Conductivity
NTTA0701 332.5 380.4 5.9 38.6 7.819 0.082 0.499 0.003 0.013 0.0255 0.059 0.0852 0.1401 0.0007 0.7 397 2699 7.39 7.99
NTTA0702 247.3 136.7 3.8 16.4 0.924 0.07 0.43 0.003 0.006 0.0223 0.007 0.0401 0.0185 0.0006 1.58 162 1816 7.52 7.99

Key:
< or > - Amount detected is above or below equipment detection limit A - Approximate end time of flow due to power failure A-01 - >400000
B-02 - BOD result calculated from COD analysis D-1 - Elevated reporting limit(s) due to dilution. This has no effect on the data. Sample result is considered valid. DET - Analyte Detected
DRY – Sample results reported on a dry weight basis E - End time of flow due to equipment removal from site IS - Insufficient Sediment within Sample
J - Detected but below the reporting limit N/A - Data not available at this time ND - Analyte not detected at or above the reporting limit
NR - Not Reported NST – No Sample Taken U - Undetected
W-05 - Highest possible dilutions were made by the laboratory Qual – Qualifiers Q-5 - Seed correction outside desired limits. This has no effect on the data. Sample result is considered valid.
Q11 - Insufficient sample for analysis of matrix spike. This has no effect on the data. Sample result is considered valid. RPD - Relative Percent Difference S-1 - Laboratory container pH was above desired amount. This has no effect on the data. Sample result is considered valid.
TNTC - Too numerous to count U – Undetected W-05 - Highest possible dilutions were made by the laboratory
     
BOD - Biochemical Oxygen Demand BRL - Below Reading Limit COD - Chemical Oxygen Demand
TDS - Total Dissolved Solids TSS - Total Suspended Solids by EPA 160.2 PC - Sample results suspect due to post-calibration results
**This data was only collected in the second permit term. ***This data is only being collected in the third permit term.  


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