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Station Info: GA1503

 
Station ID Year Jurisdiction Watershed Location Description     Latitude         Longitude    
GA1503 2015 Garland Rowlett Creek-Lake Ray Hubbard Rowlett Creek at Hwy 66 32.909367 -96.593372

Sampled Events

1st Quarter:
Storm
Summary
Storm
Start
Storm
End
Description Rainfall
Station
Rainfall
Total (in)
Peak
Rate (in)
Antecedent Dry
Period (hrs)
1/1/2015 3:03:00 AM 1/1/2015 11:58:00 AM Large storms formed southwest of the Dallas Fort-Worth metroplex and moved across the region in a northeast direction bringing light to medium rainfall. GA1503 0.68 0.14 208
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
1/1/2015 8:45:00 AM 1/1/2015 1:55:00 PM 1/1/2015 9:35:00 AM 1/1/2015 11:44:00 AM 6 8.7 8 3.5 36 47.1
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
544 6 <1 U <1 U 6.34 0.13 0.16 <0.061 U <0.002 U <0.003 U 0.021 <0.004 U 0.013 ** **
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 8.9 40 1250 1288

2nd Quarter:
Storm
Summary
Storm
Start
Storm
End
Description Rainfall
Station
Rainfall
Total (in)
Peak
Rate (in)
Antecedent Dry
Period (hrs)
4/5/2015 4:02:00 AM 4/5/2015 10:02:00 AM Large storms formed west of the Dallas Fort-Worth metroplex and moved across the region in an eastern direction bringing heavy rainfall. GA1503 0.77 0.34 572
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
4/5/2015 7:40:00 AM 4/5/2015 10:55:00 AM 4/5/2015 8:07:00 AM 4/5/2015 10:11:00 AM 6 7.6 5.9 3.5 60 62.2 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
638 16.86 1.95 J 10 27.2 0.22 0.26 <0.06 U <0.002 U 0.003 J 0.017 J <0.004 U 0.031 ** **
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 8 700 2500 970

3rd Quarter:
Storm
Summary
Storm
Start
Storm
End
Description Rainfall
Station
Rainfall
Total (in)
Peak
Rate (in)
Antecedent Dry
Period (hrs)
8/24/2015 3:56:00 PM 8/24/2015 5:02:00 PM A storm formed south of Rowlett and moved north across the Garland monitoring sites from downstream to upstream bringing heavy rainfall. GA1503 0.77 0.76 1130
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
8/24/2015 4:00:00 PM 8/25/2015 8/24/2015 4:00:00 PM 8/24/2015 6:04:00 PM 6 1 0 3.5 90 82.3 Due to an error during the downloading sequence the level data was overwritten.
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
364 60.86 19.6 35 37 0.6 0.6 <0.06 U <0.002 U <0.003 U 0.014 J <0.004 U 0.046 ** **
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 6.2 100 3250 728

4th Quarter:
Storm
Summary
Storm
Start
Storm
End
Description Rainfall
Station
Rainfall
Total (in)
Peak
Rate (in)
Antecedent Dry
Period (hrs)
10/22/2015 7:05:00 PM 10/22/2015 11:00:00 PM Large storms formed southwest of the Dallas Fort-Worth metroplex and moved across the region in a northeast direction bringing heavy rainfall. GA1503 0.8 0.44 1034
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
10/22/2015 9:35:00 PM 10/23/2015 12:15:00 AM 10/22/2015 9:47:00 PM 10/22/2015 11:50:00 PM 6 6.8 4.5 3.5 68 70.6 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
568 120 <1 U 14 38.8 0.37 0.5 <0.06 U <0.002 U <0.003 U 0.008 J <0.004 U 0.014 ** **
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 8.11 550 45000 757

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
GA1501 402 283 6.1 11.4 13.738 0.13 0.383 0.03 0.001 0.002 0.0155 0.006 0.0413 0.7 134 3373 7.73 980
GA1502 379 650.6 7.7 16.3 25.22 0.3775 0.555 0.0304 0.001 0.016 0.014 0.002 0.0265 0.95 314 5967 7.36 1009.25
GA1503 528.5 50.9 5.6 14.9 27.335 0.33 0.38 0.0301 0.001 0.002 0.015 0.002 0.026 0.7 198 4624 6.79 935.75

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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