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Station Info: GA1401

 
Station ID Year Jurisdiction Watershed Location Description     Latitude         Longitude    
GA1401 2014 Garland Rowlett Creek - Lake Ray Hubbard Rowlett Creek at SH 78 32.959902 -96.614854

Sampled Events

1st Quarter:
Storm
Summary
Storm
Start
Storm
End
Description Rainfall
Station
Rainfall
Total (in)
Peak
Rate (in)
Antecedent Dry
Period (hrs)
1/9/2014 10:47:00 AM 1/9/2014 4:53:00 AM Scattered light showers occurred across Tarrant and Dallas Counties during the afternoon hours on 01/08/14 and continued into the early morning hours of 01/09/14. GA1401 0.18 0.03 429
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
1/9/2014 2:50:00 AM 1/9/2014 11:25:00 AM 1/9/2014 7:27:00 AM 1/9/2014 9:24:00 AM 6 1.9 1.5 3.5 37 43.7 The flow end time and date are a result of the sampling equipment being removed at the conclusion of 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 Cadmium
488 22 <1 U 23 1.04 0.05 0.12 <0.06 U <0.002 U <0.003 U 0.026 <0.004 U 0.018 ** **
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 8.4 <1 600 867

2nd Quarter:
Storm
Summary
Storm
Start
Storm
End
Description Rainfall
Station
Rainfall
Total (in)
Peak
Rate (in)
Antecedent Dry
Period (hrs)
4/13/2014 7:32:00 AM 4/13/2014 11:33:00 PM Moderate to heavy thunderstorms moved from the west across the area. GA1401 0.43 0.34 156
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
4/13/2014 11:50:00 AM 4/13/2014 2:40:00 PM 4/13/2014 11:56:00 AM 4/13/2014 2:03:00 PM 6 1.9 1.5 3.5 69 68.5 The flow end time and date are a result of the sampling equipment being removed at the conclusion of 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 Cadmium
408 57 10 19 1.66 0.09 0.15 <0.06 U <0.002 U 0.003 J 0.018 J <0.004 U 0.026 ** **
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
5.3 8 100 3700 448

3rd Quarter:
Storm
Summary
Storm
Start
Storm
End
Description Rainfall
Station
Rainfall
Total (in)
Peak
Rate (in)
Antecedent Dry
Period (hrs)
7/3/2014 4:33:00 AM 7/3/2014 7:23:00 AM A large low pressure area moved across the northeastern part of the DFW metroplex during the early morning hours and brought light to moderate rainfall. GA1401 0.18 0.15 179
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
7/3/2014 6:15:00 AM 7/3/2014 8:50:00 AM 7/3/2014 6:42:00 AM 7/3/2014 8:49:00 AM 6 9.9 5.8 3.5 75 75.9 The flow end time and date are a result of the sampling equipment being removed at the conclusion of 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 Cadmium
280 1873 2.12 21 7.86 0.09 0.29 <0.06 U 0.005 J 0.004 J 0.015 J <0.004 U 0.035 ** **
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 8.8 5 5200 210

4th Quarter:
Storm
Summary
Storm
Start
Storm
End
Description Rainfall
Station
Rainfall
Total (in)
Peak
Rate (in)
Antecedent Dry
Period (hrs)
10/11/2014 10:55:00 PM 10/11/2014 1:35:00 AM A line of storms formed west of the Dallas Fort-Worth metroplex and moved across the region in an easterly direction and brought light to medium rainfall during late evening hours. GA1401 0.32 0.2 197
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
10/11/2014 10/11/2014 2:30:00 AM 10/11/2014 12:22:00 AM 10/11/2014 2:29:00 AM 6 0.8 0.7 3.5 64 76.1 The flow end time and date are a result of the sampling equipment being 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 Cadmium
466 27.86 2.27 35 4.99 0.31 0.35 <0.06 U <0.002 U <0.003 U 0.021 <0.004 U 0.052 ** **
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
6.8 8.6 17 610 773

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
GA1401 410.5 495 3.7 24.5 3.888 0.135 0.228 0.03 0.002 0.003 0.02 0.002 0.0328 3.38 8 1629 8.34 574.5
GA1402 404.8 335.7 2.2 18.4 6.358 0.1275 0.205 0.03 0.002 0.005 0.0198 0.002 0.0483 0.7 93 4159 7.45 770.5
GA1403 528.8 31.7 3.2 64.6 4.928 0.155 0.273 0.03 0.002 0.005 0.0213 0.003 0.0468 1.05 56 3738 8.02 686

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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