NAPA PLANT SITE RESTORATION PROJECT SOUTH UNIT BREACH 2010 Water Quality Monitoring.

NAPA PLANT SITE NAPA PLANT SITE RESTORATION PROJECTRESTORATION PROJECT

SOUTH UNIT BREACH 2010SOUTH UNIT BREACH 2010

Water Quality MonitoringWater Quality Monitoring

Three Breach LocationsThree Breach Locations

• 11stst Breach CB8 Breach CB8 – (Aug. 25, 2010)(Aug. 25, 2010)– (Sep. 7, 2010)(Sep. 7, 2010)

• 22NDND Breach “Y” Breach “Y” – (Sep. 22, 2010)(Sep. 22, 2010)

• 33rdrd Breach “Barge” Breach “Barge” – (Oct. 5, 2010)(Oct. 5, 2010)

Water Quality Monitoring Water Quality Monitoring South Unit Breach 2010South Unit Breach 2010

Photo BeforePhoto Before Photo AfterPhoto After

Water Quality CollectionWater Quality Collection

• Out going tide, based on adjusted Out going tide, based on adjusted tide schedule of Brazos Bridgetide schedule of Brazos Bridge

• 2 Hach Sondes- one was deployed 2 Hach Sondes- one was deployed to collect hourly readings of to collect hourly readings of salinity.salinity.

Water Quality ParametersWater Quality Parameters

• SalinitySalinity

• TurbidityTurbidity

• pHpH

• Dissolved OxygenDissolved Oxygen

• Specific ConductivitySpecific Conductivity

• TemperatureTemperature

SU-CB8

NR-4

NR-3

NR-2

NR-1NU-B

Desalting Monitoring Locations

CU-B-150U

SU-P4

SU-P2

SU-P3Fisheries Monitoring Locations

Previous Breach Monitoring Locations

Planning Unit

Channel

SU-B3

SU-CB2CU-B-150D

SU-P1

SU-US

SU-C

SU-DS

NU-B-150U

NU-B-150D

CU-B

Desalting Monitoring Locations (Short-Term)

Notes:

1. Sample locations may be adjusted as close as possible to their proposed location based on field conditions and accessibility.

Water Water Quality Quality

Monitoring Monitoring Plan Plan

LocationsLocations

SU-CB8

NR-4

NR-3

NR-2

NR-1NU-B

Desalting Monitoring Locations

CU-B-150U

SU-P4

SU-P2

SU-P3Fisheries Monitoring Locations

Previous Breach Monitoring Locations

Planning Unit

Channel

SU-B3

SU-CB2CU-B-150D

SU-P1

SU-US

SU-C

SU-DS

NU-B-150U

NU-B-150D

CU-B

Desalting Monitoring Locations (Short-Term)

Notes:

1. Sample locations may be adjusted as close as possible to their proposed location based on field conditions and accessibility.

Salinity Salinity ReductioReduction Breachn Breach

CB8CB8

Salinity Reduction Breach at Salinity Reduction Breach at CB8 CB8

August 24, 2010- 1 day prior to breach August 25, 2010- day of breach

Figure C-3. Salinity Napa River and Breach CB8 8-20-10 to 10-7-10

0

5

10

15

20

25

30

35

40

8/20

/201

0

8/23

/201

0

8/24

/201

0

8/25

/201

0

8/26

/201

0

8/27

/201

0

8/28

/201

0

8/29

/201

0

8/30

/201

0

8/31

/201

0

9/1/

2010

9/2/

2010

9/3/

2010

9/4/

2010

9/5/

2010

9/6/

2010

9/7/

2010

9/8/

2010

9/9/

2010

9/15

/201

0

9/22

/201

0

9/23

/201

0

9/27

/201

0

9/30

/201

0

10/4

/201

0

10/5

/201

0

10/6

/201

0

10/7

/201

0

Date

Sal

init

y (p

pt)

SU-CB8 1 ft. NR-4 NR-3

SRB SRB Widening Y Breach Barge Breach

Continuous Sonde at CB8Continuous Sonde at CB8

220-Ft

70-Ft

Figure C-1. Salinity CB8 Continuous Sonde- Hourly Readings (8-27-10 to 9-23-10)

0.00

5.00

10.00

15.00

20.00

25.00

30.00

35.00

40.00

45.008/

27/1

0

8/28

/10

8/29

/10

8/30

/10

8/31

/10

9/1/

10

9/2/

10

9/3/

10

9/4/

10

9/5/

10

9/6/

10

9/7/

10

9/8/

10

9/9/

10

9/10

/10

9/11

/10

9/12

/10

9/13

/10

9/14

/10

9/15

/10

9/16

/10

9/17

/10

9/18

/10

9/19

/10

9/20

/10

9/21

/10

9/22

/10

9/23

/10

Date

Sal

init

y (p

pt)

SRB Widening Y Breach

SU-CB8

NR-4

NR-3

NR-2

NR-1NU-B

Desalting Monitoring Locations

CU-B-150U

SU-P4

SU-P2

SU-P3Fisheries Monitoring Locations

Previous Breach Monitoring Locations

Planning Unit

Channel

SU-B3

SU-CB2CU-B-150D

SU-P1

SU-US

SU-C

SU-DS

NU-B-150U

NU-B-150D

CU-B

Desalting Monitoring Locations (Short-Term)

Notes:

1. Sample locations may be adjusted as close as possible to their proposed location based on field conditions and accessibility.

Water Water Quality Quality

MonitorinMonitoring Internal g Internal

UnitsUnits

Figure C-2. Salinity Internal Sites Compared with Napa River 8-20-10 to 10-7-10

0

10

20

30

40

50

60

70

8/20

/201

0

8/23

/201

0

8/24

/201

0

8/25

/201

0

8/26

/201

0

8/27

/201

0

8/28

/201

0

8/29

/201

0

8/30

/201

0

8/31

/201

0

9/1/

2010

9/2/

2010

9/3/

2010

9/4/

2010

9/5/

2010

9/6/

2010

9/7/

2010

9/8/

2010

9/9/

2010

9/15

/201

0

9/22

/201

0

9/23

/201

0

9/27

/201

0

9/30

/201

0

10/4

/201

0

10/5

/201

0

10/6

/201

0

10/7

/201

0

Date

Sa

lin

ity

(p

pt)

SU-P1 SU-P4 SU-P3 SU-P2 1 ft. NR-4

SRBSRB Widening Y Breach Barge breach

300 (ppt) range

SU-CB8

NR-4

NR-3

NR-2

NR-1NU-B

Desalting Monitoring Locations

CU-B-150U

SU-P4

SU-P2

SU-P3Fisheries Monitoring Locations

Previous Breach Monitoring Locations

Planning Unit

Channel

SU-B3

SU-CB2CU-B-150D

SU-P1

SU-US

SU-C

SU-DS

NU-B-150U

NU-B-150D

CU-B

Desalting Monitoring Locations (Short-Term)

Notes:

1. Sample locations may be adjusted as close as possible to their proposed location based on field conditions and accessibility.

““Y” Y” BreachBreachSU-B3SU-B3

Figure C-5. Salinity "Y" 2nd Breach SU-B3, SU-P3, SU-DS, and NR4

0

5

10

15

20

25

30

35

9/15

/201

0

9/21

/201

0

9/22

/201

0

9/23

/201

0

9/27

/201

0

9/30

/201

0

10/4

/201

0

10/5

/201

0

10/6

/201

0

10/7

/201

0

Date

Sa

linit

y (

pp

t)

SU-P3 SU-DS NR-4 SU-B3

Y Breach

Figure C-4. Salinity SU-P2, CB8, SU-B3, Mudflats, and Napa River 8-20-10 to 10-7-10

0

5

10

15

20

25

30

35

40

8/20

/201

0

8/23

/201

0

8/24

/201

0

8/25

/201

0

8/26

/201

0

8/27

/201

0

8/28

/201

0

8/29

/201

0

8/30

/201

0

8/31

/201

0

9/1/

2010

9/2/

2010

9/3/

2010

9/4/

2010

9/5/

2010

9/6/

2010

9/7/

2010

9/8/

2010

9/9/

2010

9/15

/201

0

9/22

/201

0

9/23

/201

0

9/27

/201

0

9/30

/201

0

10/4

/201

0

10/5

/201

0

10/6

/201

0

10/7

/201

0

Date

Sal

inity

(ppt

)

SU-P2 1 ft. SU-CB8 1 ft. SU-US SU-C SU-DS NR-4 SU-B3

330 SRB SRB Widening Y Breach Barge Breach

SU-CB8

NR-4

NR-3

NR-2

NR-1NU-B

Desalting Monitoring Locations

CU-B-150U

SU-P4

SU-P2

SU-P3Fisheries Monitoring Locations

Previous Breach Monitoring Locations

Planning Unit

Channel

SU-B3

SU-CB2CU-B-150D

SU-P1

SU-US

SU-C

SU-DS

NU-B-150U

NU-B-150D

CU-B

Desalting Monitoring Locations (Short-Term)

Notes:

1. Sample locations may be adjusted as close as possible to their proposed location based on field conditions and accessibility.

““Barge” Barge” BreachBreachSU-CB2SU-CB2

Figure C- 6. Salinity "Barge Channel" 3rd Breach SU-CB2, SU-P1 and Napa River

05

101520253035

9/7

/20

10

9/8

/20

10

9/9

/20

10

9/1

5/2

01

0

9/2

1/2

01

0

9/2

2/2

01

0

9/2

3/2

01

0

9/2

7/2

01

0

9/3

0/2

01

0

10

/4/2

01

0

10

/5/2

01

0

10

/6/2

01

0

10

/7/2

01

0

Date

Sa

lin

ity

(p

pt)

SU-P1 NR-3 NR-2 SU-CB2

Barge BreachSRB Widening Y Breach

• Overall the decrease in salinity Overall the decrease in salinity followed the projected models, followed the projected models, allowing the Napa Plant Site to allowing the Napa Plant Site to gradually transition to ambient gradually transition to ambient conditions (Napa River). This gradual conditions (Napa River). This gradual process made the salinity reduction process made the salinity reduction phase a success. phase a success.

• There is still an existing salt crust There is still an existing salt crust inside the unit that appears to be inside the unit that appears to be slowly dissolving as expected.slowly dissolving as expected.

TurbidityTurbidity

Figure B-5. Turbidity 8-20-10 to 9-4-10

0

10

20

30

40

50

60

70

80

90

100

8/2

0/2

010

8/2

3/2

010

8/2

4/2

010

8/2

5/2

010

8/2

6/2

010

8/2

7/2

010

8/2

8/2

010

8/2

9/2

010

8/3

0/2

010

8/3

1/2

010

9/1

/2010

9/2

/2010

9/3

/2010

9/4

/2010

Date

NT

U

SU-CB8 1 ft. SU-CB8 3 ft. SU-US SU-C SU-DS NR-4 NR-3

SRB

177 NTU

Figure B-6. Turbidity (continued) 9-5-10 to 10-7-10

0102030405060708090

100

9/5

/2010

9/6

/2010

9/7

/2010

9/8

/2010

9/9

/2010

9/1

5/2

010

9/2

2/2

010

9/2

3/2

010

9/2

7/2

010

9/3

0/2

010

10/4

/2010

10/5

/2010

10/6

/2010

10/7

/2010

Date

NT

U

SU-CB8 1 ft. SU-CB8 3 ft. SU-US SU-C SU-DS NR-4 NR-3 NR-2 CU-B- 150U CU-B-150D SU-CB2 SU-B3

SRB Widening Y Breach Barge Breach

113 & 117 NTU

ChallengesChallenges• Complex monitoring schedule in Complex monitoring schedule in

conjunction with permit regulations conjunction with permit regulations and multiple breachesand multiple breaches

• Tide depth and time of sampling Tide depth and time of sampling versus mudflats and boat access.versus mudflats and boat access.

• Continuous Sonde deployment issuesContinuous Sonde deployment issues

Wildlife ResponseWildlife Response

• ShorebirdsShorebirds

• Salmonids and other fish species Salmonids and other fish species

• Harbor seals Harbor seals

• WaterfowlWaterfowl

Thank you to GAIA, DFG, Cargill and DU for this Thank you to GAIA, DFG, Cargill and DU for this great opportunity.great opportunity.

Questions?Questions?