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Station Info: AR0902

 
Station ID Year Jurisdiction Watershed Location Description     Latitude         Longitude    
AR0902 2009 Arlington Mountain Creek South Cottonwood Creek at Forum Road 32.7093888 -97.0536111

Sampled Events

1st Quarter:
Storm
Summary
Storm
Start
Storm
End
Description Rainfall
Station
Rainfall
Total (in)
Peak
Rate (in)
Antecedent Dry
Period (hrs)
2/9/2009 3:10:00 AM 2/9/2009 6:30:00 AM Thunderstorms developed across the metroplex along a cold front that moved into the area from west northwest direction to the east southeast. AR0901 0.24 0.14 268
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
2/9/2009 3:55:00 AM 2/9/2009 3:15:00 PM 3:59:00 AM 6:02:00 AM 6 0.76 0.2 3.5 55 All aliquots were successfully collected.
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)
136 178 40.3 B-02 71 0.9 <0.05 U <0.05 U *** <0.002 U 0.005 J 0.033 J 0.015 J 0.155 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 7.66 8.16 210 8400 ***

2nd Quarter:
Storm
Summary
Storm
Start
Storm
End
Description Rainfall
Station
Rainfall
Total (in)
Peak
Rate (in)
Antecedent Dry
Period (hrs)
4/12/2009 3:45:00 AM 4/12/2009 8:45:00 AM A series of thunderstorms developed across the metroplex that moved into the area from west northwest direction to the east southeast. KTXARLIN18 1.27 0.91 268
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
4/12/2009 3:45:00 AM 4/12/2009 4:00:00 PM 4:08:00 AM 6:10:00 AM 6 5.3 0.58 3.5 55 All aliquots were successfully collected.
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)
88 808 10.6 112 <0.05 U 0.1 J 0.26 *** 0.007 J 0.011 J 0.063 J 0.02 J 0.09 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 7.1 7.75 2200 1120000 ***

3rd Quarter:
Storm
Summary
Storm
Start
Storm
End
Description Rainfall
Station
Rainfall
Total (in)
Peak
Rate (in)
Antecedent Dry
Period (hrs)
7/26/2009 7:30:00 PM 7/26/2009 8:20:00 PM A series of thunderstorms developed across the metroplex that moved into the area from the northwest to the southeast. AR0901 1.69 1.67 225
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
7/26/2009 7:30:00 PM 7/27/2009 3:00:00 AM 7:35:00 PM 9:38:00 PM 6 20.68 4.09 3.5 74 All aliquots were successfully collected. * During the event, a significant amount of debris was swept into the channel covering the bubbler line which resulted in higher water levels.
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)
156 501 17.9 105 1.9 0.07 J 0.34 *** 0.006 J 0.007 J 0.062 0.013 0.076 <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
6.7 7.77 8.44 7000 180000 ***

4th Quarter:
Storm
Summary
Storm
Start
Storm
End
Description Rainfall
Station
Rainfall
Total (in)
Peak
Rate (in)
Antecedent Dry
Period (hrs)
10/3/2009 3:05:00 PM 10/3/2009 8:25:00 PM A series of thunderstorms developed across the metroplex that moved into the area from the southwest to the northeast. AR0901 0.15 0.04 269
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
10/3/2009 3:00:00 PM 10/4/2009 12:30:00 AM 3:37:00 PM 5:40:00 PM 6 0.904 0.593 3.5 75 All aliquots were successfully collected.
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)
412 4 J 15.8 37.8 5.2 0.05 J 0.18 *** 0.004 J <0.003 U <0.008 U <0.004 U <0.003 U <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
4.6 J 7.51 7.97 20000 450000 ***

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
AR0901 180.5 312 12.7 59 1.206 0.045 0.116 0.004 0.002 0.032 0.008 0.0669 0.0185 0.0005 1.65 3065 360111 7.35 8.16
AR0902 198 372.8 21.2 81.5 2.006 0.0613 0.201 0.005 0.006 0.0405 0.013 0.0806 0.0185 0.0005 3.85 2836 166148 7.43 8.01
AR0903 175.5 163.8 13.7 67.6 2.131 0.065 0.225 0.003 0.005 0.0613 0.012 0.0745 0.0185 0.0005 4.18 22795 888384 7.09 8.09

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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