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Station Info: AR1203

 
Station ID Year Jurisdiction Watershed Location Description     Latitude         Longitude    
AR1203 2012 Arlington Johnson Creek Johnson Creek at Six Flags 32.7588056 -97.0670278

Sampled Events

1st Quarter:
Storm
Summary
Storm
Start
Storm
End
Description Rainfall
Station
Rainfall
Total (in)
Peak
Rate (in)
Antecedent Dry
Period (hrs)
1/24/2012 3:10:00 PM 1/24/2012 9:55:00 PM Thunderstorms developed across the metroplex that moved into the area from west southwest to east northeast. AR1203 0.94 0.35 336
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
1/24/2012 4:45:00 PM 1/24/2012 11:59:59 PM 4:58:00 PM 7:02:00 PM 6 0.6 0.2 3.5 55 55.6 Depths are approximates based on bubbler malfunction. Flow end set at time immediately prior to increase in flow from subsequent event. Flow had not returned to base flow conditions.
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 Cadmium
220 158 7.49 57 17.6 0.007 J 0.15 <0.12 U <0.002 U 0.01 0.035 0.011 0.069 ** **
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 8.1 210 7200 703

2nd Quarter:
Storm
Summary
Storm
Start
Storm
End
Description Rainfall
Station
Rainfall
Total (in)
Peak
Rate (in)
Antecedent Dry
Period (hrs)
4/3/2012 2:20:00 PM 4/3/2012 3:05:00 PM Severe thunderstorm developed southwest of monitoring area and moved northeast with growing intensity. AR1203 0.46 0.46 336
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
4/3/2012 2:20:00 PM 4/3/2012 8:00:00 PM 4/3/2012 2:32:00 PM 4/3/2012 8:35:00 PM 6 0.12 0.058 3.5 66 73.2 Bubbler sensor appears to have malfunctioned, providing periodic fluctuations in readings. Peak depth estimate is likely overstated.
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 Cadmium
344 72 7.66 42 2.66 0.005 J 0.05 J <0.06 U <0.006 J 0.005 J 0.029 0.004 J 0.031 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
<1.4 U 7.8 290 25000 765

3rd Quarter:
Storm
Summary
Storm
Start
Storm
End
Description Rainfall
Station
Rainfall
Total (in)
Peak
Rate (in)
Antecedent Dry
Period (hrs)
7/10/2012 7:55:00 PM 7/10/2012 9:30:00 PM Scattered thunderstorms developed northeast of monitoring area and moved southwest with growing intensity. AR1203 0.2 0.19 611
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
7/10/2012 7:55:00 PM 7/11/2012 1:00:00 AM 7/10/2012 8:38:00 PM 7/10/2012 10:41:00 PM 6 1.63 0.39 3.5 82 84.7 Bubbler sensor appears to have malfunctioned, providing periodic fluctuations in readings. Peak depth estimate is likely overstated.
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 Cadmium
554 14 17.6 225 <0.05 U 0.08 0.24 <0.06 U 0.004 0.009 J 0.026 0.01 0.161 ** **
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
260 8.6 8500 76000 810

4th Quarter:
Storm
Summary
Storm
Start
Storm
End
Description Rainfall
Station
Rainfall
Total (in)
Peak
Rate (in)
Antecedent Dry
Period (hrs)
10/14/2012 1:15:00 AM 10/14/2012 1:55:00 AM Thunderstorms developed across the Metroplex that moved into the area from west northwest to east southeast. AR1203 0.66 0.65 312
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
10/14/2012 1:15:00 AM 10/14/2012 5:00:00 AM 10/14/2012 1:32:00 AM 10/14/2012 3:35:00 AM 6 0.8 0.02 3.5 70 70 Bubbler sensor appears to have malfunctioned, providing periodic fluctuations in readings. Peak depth estimate is likely overstated.
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 Cadmium
210 201 28.4 62 12.9 0.03 0.23 <0.06 U 0.004 J 0.004 J 0.029 0.004 J 0.03 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
9.9 8.5 2500 80000 188

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
AR1201 209.5 167 12.8 98 8.14 0.0345 0.14 0.0375 0.003 0.007 0.0293 0.008 0.0755 5 146 21248 8.34 327.5
AR1202 264.5 315.5 26.1 100.5 9.5 0.0708 0.268 0.0375 0.003 0.01 0.04 0.022 0.1263 4.38 109 37275 8.34 261.25
AR1203 332 111.3 15.3 96.5 8.296 0.0305 0.168 0.0375 0.003 0.007 0.0298 0.007 0.0728 67.83 1067 32344 8.13 616.5

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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