29 APR 09

Historical Reconstruction of the Water-Distribution Systems: Hadnot Point and Holcomb

Boulevard

Jason SautnerEnvironmental Health Scientist

Division of Health Assessment and Consultation

The findings and conclusions in this presentation are those of the author and do not necessarily represent the views of the Agency for Toxic Substances and Disease Registry or the U.S. Department of Health and Human Services

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29 APR 09

Overview

BackgroundWater-Distribution System Model all-pipes calibration results

Interconnection transfer of water between systems

Historical Reconstruction preliminary scenario results

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29 APR 09

Water treatment plant service areas Hadnot Point

74 mi of pipelines approx 71% PVC

4 elevated tanks: all 300,000 gal

Delivered water: approx. 2.3 MGD (2004)

Holcomb Boulevard 73 mi of pipelines

approx 67% Cast Iron (CI) 3 elevated tanks:

S-830 = 300,000 gal LCH-4004 = 200,000 gal S-2323 = 200,000 gal

Delivered water approx. 1.0 MGD (2004)

Interconnections Wallace Creek bypass valve Booster Pump 742

Wallace Creek (Marston Pavilion)

bypass valve

Booster

Pump 742

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29 APR 09

Significant events: 1941 through 1987

1941: Hadnot Point water treatment plant comes on-line

1952: Tarawa Terrace water treatment plant came on-line

1972: Holcomb Boulevard water treatment plant came online in June of 1972

Nov 1984-Feb 1985: Several supply wells shut down due to VOC contamination

Jan27-Feb4 1985: (9 day period) Marston Pavilion interconnection opened continuously

1987: Holcomb Boulevard water treatment plant expanded to provide water to Tarawa Terrace and Camp Johnson water-distribution system areas

1987: Tarawa Terrace water treatment plant taken out-of-service (March) and demolished

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29 APR 09

Hadnot Point Water-Distribution System: All-pipes Model

EPANET 2 Simulates spatially distributed

contaminant concentrations throughout the network

Performs extended period simulations of hydraulic and water quality behavior within the network

Hadnot Point 3904 junctions; 4012 pipes Hydraulic and Water Quality

Field Test May 24-27, 2004 Calcium Chloride (CaCl2) and

Sodium Fluoride (NaF) injection at HP WTP

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29 APR 09

Hadnot Point: Calibration Results

0:00 12:00 0:00 12:00 0:00 12:00 0:00 12:00 0:00

DAY AND TIME

145

150

155

160

146

147

148

149

151

152

153

154

156

157

158

159

HY

DR

AU

LIC

HE

AD

(ft)

5/24/04 5/25/04 5/26/04 5/27/04 5/28/04

EXPLANATIONSCADASimulated (Demand Factors from Water Balance)Simulated (Demand Factors from PEST)

Tank SFC314

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29 APR 09

Holcomb Boulevard Water-Distribution System: All-pipes Model

Holcomb Boulevard 4782 junctions; 4909 pipes Hydraulic and Water Quality

Field Test Sept-Oct 2004 Shut off fluoride feed at HB

WTP

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29 APR 09

Holcomb Boulevard: Calibration Results

0:00 12:00 0:00 12:00 0:00 12:00 0:00 12:00 0:00

DAY AND TIME

155

160

165

156

157

158

159

161

162

163

164

HY

DR

AU

LIC

HE

AD

(ft)

9/23/04 9/24/04 9/25/04 9/26/04 9/27/04

EXPLANATIONSCADASimulated (Demand Factors from Water Balance)Simulated (Demand Factors from PEST)

Tank S2323

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29 APR 09

PEST Derived Demand Factors

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29 APR 09

Jan-

78

Jan-

79

Jan-

80

Jan-

81

Jan-

82

Jan-

83

Jan-

84

Jan-

85

Jan-

86

Jan-

87Jul-7

8

Jul-7

9

Jul-8

0

Jul-8

1

Jul-8

2

Jul-8

3

Jul-8

4

Jul-8

5

Jul-8

6

date

0

4

8

12

16

20

num

ber o

f day

s

7

1

32

1

54

7

21 1

18

8

5

21

NO

INFO

RM

ATI

ON

FO

R 1

979

NO

INFO

RM

ATI

ON

FO

R 1

982

NO

INFO

RM

ATI

ON

FO

R 1

981

Interconnections:BP-742 and Wallace Creek (Marston Pavilion)

Bypass Valve Camp Lejeune Log Books

1978-1986 Log book data gaps: 1972 to 1977

Nov. 1978 to Nov. 1979 Aug. 1980 to July 1982 BP-742 not operated in 1984

Booster Pump 742 Operations ~700 gpm rated capacity during study

timeframe pump replaced with ~300 gpm rated

capacity (currently out-of-service) operated mostly in late spring to early

summer (April, May, June, and July) operated more frequently in mid-1980’s

than in late 1970’s or early 1980’s

Wallace Creek (Marston Pavilion) bypass valve Operated around 18 different days

between 1978 and 1986 Continuously for 9 days Jan27-Feb4 1985

NO

INFO

RM

ATI

ON

FO

R 1

979

NO

INFO

RM

ATI

ON

FO

R 1

982

NO

INFO

RM

ATI

ON

FO

R 1

981

Jan-

78

Jan-

79

Jan-

80

Jan-

81

Jan-

82

Jan-

83

Jan-

84

Jan-

85

Jan-

86

Jan-

87Jul-7

8

Jul-7

9

Jul-8

0

Jul-8

1

Jul-8

2

Jul-8

3

Jul-8

4

Jul-8

5

Jul-8

6

date

0

2

4

6

num

ber o

f day

s

5

4

1

4

3

1

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29 APR 09

January 1978 –December 1986

0

2

4

6

8

10

12

14

16

18

20

22

24

hour

of d

ay (0

0:00

)

Jan-

78

Jan-

79

Jan-

80

Jan-

81

Jan-

82

Jan-

83

Jan-

84

Jan-

85

Jan-

86

Jan-

87Jul-7

8

Jul-7

9

Jul-8

0

Jul-8

1

Jul-8

2

Jul-8

3

Jul-8

4

Jul-8

5

Jul-8

6

date

0

2

4

6

8

10

12

14

16

18

20

22

24

NO

INFO

RM

ATI

ON

FO

R 1

979

NO

INFO

RM

ATI

ON

FO

R 1

982

NO

INFO

RM

ATI

ON

FO

R 1

981

5/1/

86

5/4/

86

5/7/

86

5/10

/86

5/13

/86

5/16

/86

5/19

/86

5/22

/86

5/25

/86

5/28

/86

5/31

/86

date

0

2

4

6

8

10

12

14

16

18

20

22

24

hour

of d

ay (0

0:00

)

May 1986

Booster Pump 742 Hourly Operation

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29 APR 09

Booster Pump 742 “Typical” Operation Scenarios

Booster Pump 742 operated most frequently in May 1986

Hours of operation according to log book information 1986 (worst case)

~1900 hours to 2400 hours (7pm to midnight) operated about half the days during the

month 1980 (typical case)

~1730 hours to 2345 hours (5:30pm to 11:45pm) operated about three days during the

month

Camp Lejeune former and current water utility staff confirmed BP-742 usually shut off at 2400 hours when operators shift over

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29 APR 09

Water-Distribution Systems Overview

Hadnot Point Hadnot Point WTP Controlling tank SFC-314

Holcomb Boulevard Holcomb Boulevard WTP Controlling tank S-2323 Berkeley Manor tank S-830 Golf courses located near Paradise Point

area (S-2323) Irrigated with potable water during study

timeframe

Interconnections Marston Pavilion bypass valve Booster Pump 742

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29 APR 09

0 48 96 144 192 240 288 336 384 432 480 528 576 624 672 720Hours

152

156

160

164

Hyd

raul

ic H

ead

(ft)

0 48 96 144 192 240 288 336 384 432 480 528 576 624 672 720Hours

152

156

160

164

Hyd

raul

ic H

ead

(ft)

0 48 96 144 192 240 288 336 384 432 480 528 576 624 672 720Hours

152

156

160

164

Hyd

raul

ic H

ead

(ft)

Historical Reconstruction:Holcomb Boulevard Controlling Tank S-2323

Hydraulic Head (ft)

NO INTERCONNECTION No water transfer

– May 2004 EPS

BP-742 INTERCONNECTION open every other day

– May 1986 EPS

open three days in middleof month

– May 1980 EPS

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29 APR 09

0 48 96 144 192 240 288 336 384 432 480 528 576 624 672 720Hours

0

20

40

60

80

100

Con

cent

ratio

n (1

00 u

g/L)

Historical Reconstruction:Holcomb Boulevard Controlling Tank S-2323

Concentration(100 ug/L at HP WTP)

NO INTERCONNECTION No water transfer

– May 2004 EPS– 0% HP water at S-830

BP-742 INTERCONNECTION open every other day

– May 1986 EPS– 0% HP water at S-830

open three days in middleof month

– May 1980 EPS– 0% HP water at S-8300 48 96 144 192 240 288 336 384 432 480 528 576 624 672 720

Hours

0

20

40

60

80

100

Con

cent

ratio

n (1

00 u

g/L)

0 48 96 144 192 240 288 336 384 432 480 528 576 624 672 720Hours

0

20

40

60

80

100

Con

cent

ratio

n (1

00 u

g/L)

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29 APR 09

Historical Reconstruction:Berkeley Manor Tank S-830

Hydraulic Head (ft)

NO INTERCONNECTION No water transfer

– May 2004 EPS

BP-742 INTERCONNECTION open every other day

– May 1986 EPS

open three days in middleof month

– May 1980 EPS

0 48 96 144 192 240 288 336 384 432 480 528 576 624 672 720Hours

152

156

160

164

Hyd

raul

ic H

ead

(ft)

0 48 96 144 192 240 288 336 384 432 480 528 576 624 672 720Hours

152

156

160

164

Hyd

raul

ic H

ead

(ft)

0 48 96 144 192 240 288 336 384 432 480 528 576 624 672 720Hours

152

156

160

164

Hyd

raul

ic H

ead

(ft)

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29 APR 09

0 48 96 144 192 240 288 336 384 432 480 528 576 624 672 720Hours

0

20

40

60

80

100

Con

cent

ratio

n (1

00 u

g/L)

Historical Reconstruction:Berkeley Manor Tank S-830

Concentration (100 ug/L at HP WTP)

NO INTERCONNECTION no water transfer

– May 2004 EPS– 0% HP water at S-830

BP-742 INTERCONNECTION open every other day

– May 1986 EPS (worst case)– ~22% HP water at S-830

open three days in middleof month

– May 1980 EPS (typical case)– ~8% HP water at S-8300 48 96 144 192 240 288 336 384 432 480 528 576 624 672 720

Hours

0

20

40

60

80

100

Con

cent

ratio

n (1

00 u

g/L)

0 48 96 144 192 240 288 336 384 432 480 528 576 624 672 720Hours

0

20

40

60

80

100

Con

cent

ratio

n (1

00 u

g/L)

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29 APR 09

Historical Reconstruction:Distribution Results

Concentration (100 ug/L at HP WTP)

NO INTERCONNECTION no water transfer

– May 2004 EPS

BP-742 INTERCONNECTION open every other day

– May 1986 EPS

open three days in middleof month

– May 1980 EPS

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29 APR 09

Future Considerations –Historical Trends

Explore using climatic data, (which is directly related to when the golf courses were irrigated) along with known Booster Pump 742 operating conditions from 1978 to 1986 to estimate historical BP-742 operations from 1973 to 1977. don’t need operations from 1968 to 1972

because Holcomb Boulevard WDS received all its water from Hadnot Point WTP during this timeframe

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29 APR 09

Future Considerations –Historical Reconstruction Interconnections

Model each month BP-742 was operating with actual log book data

this will not be a “typical” scenario but instead will be “actual” occurrence

this will still be run as extended period simulation estimate BP-742 operating conditions from 1972-1977

– Use BP-742 log book operating data along with existing climatic data from 1972-1986 to plot historical trends

Model Marston Pavilion bypass valve openings Already conducted preliminary simulations and it

appears Wallace Creek bypass valve opening has little influence on Holcomb Boulevard WDS

– Did this with BP-742 pumping, might want to run scenario with just Marston Pavilion valve bypass valve opening

Model 9 day event (Jan-Feb 1985) when Marston Pavilion bypass valve opened continuously

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29 APR 09

Thank You!

Questions and Discussion

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