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Station Info: AR1201

 
Station ID Year Jurisdiction Watershed Location Description     Latitude         Longitude    
AR1201 2012 Arlington Johnson Creek Johnson Creek at Matlock Road 32.693 -97.1165556

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. AR1201 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 4:20:00 PM 1/24/2012 11:59:59 PM 4:42:00 PM 7:15:00 PM 7 0.8 0.3 4 55 56.6 An additional aliquot was taken. Program has been revised to follow protocol. 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
250 214 7.39 43 16.6 0.008 J 0.07 J <0.12 U <0.002 U 0.006 J 0.037 0.01 0.101 ** **
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 8.7 290 16000 166

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. AR1201 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 2:45:00 PM 4/3/2012 8:00:00 PM 4/3/2012 2:49:00 PM 4/3/2012 4:53:00 PM 6 0.88 0.22 3.5 66 72.1 Sampler collected one additional aliquot, but it was not collected in the sample containers as they have been removed when the additional aliquot sample collection initiated.
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
188 180 10.8 59 3 0.01 0.06 J <0.06 U <0.002 U 0.009 J 0.032 0.006 J 0.043 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 8 570 28000 555

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. AR1201 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 8:09:00 PM 7/10/2012 10:12:00 PM 6 0.3 0.14 3.5 82 85.3
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
308 24 14.1 258 0.76 0.09 0.26 <0.06 U 0.007 0.01 0.029 0.008 J 0.128 ** **
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
4.5 8.5 5500 65000 372

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. AR1201 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 1:25:00 AM 10/14/2012 6:00:00 AM 10/14/2012 1:28:00 AM 10/14/2012 3:31:00 AM 6 1.21 0.25 3.5 70 70
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
92 250 19 32 12.2 0.03 0.17 <0.06 U 0.004 J 0.004 J 0.019 0.008 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
14.1 8.5 <1 U 7000 217

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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