Pacific Ocean

San Gabriel

Mountains

San Bernardino

Mountains

ChinoHills

Santa Ana Mountains

PuenteHills

El Sobrante

de San Jacinto

LakeviewMountains

313

264212

230

255332

293 289407

319560

260

665

684

721650

568 520

812

983

805

585 321

545

476

1258 234381

732

1021

476

730

262

908

Consolidated Bedrock

Semi-consolidated Sediments

> 1000

700 to 1000

500 to 700

400 to 500

300 to 400

250 to 300

< 250

Outside Study Area

Data not Available

Historical Ambient TDS (mg/L)

N5 0 5 10 Miles ENVIRONMENTAL, INC.

WILDERMUTHWEs:\clients\sawpa\tintds2a\task 5\figures_tables\figs_5-1_thru_5-4.apr

Historical Ambient Water QualityTotal Dissolved Solids

Figure 5-1a

MapArea

TIN/TDS Phase 2A -- Task 5Compute TDS and Nitrate Objectives

Management Zone Boundary

Other Map Features

1954-1973

Prepared by: JPL/AEM Date: July, 2000

Pacific Ocean

San Gabriel

Mountains

San Bernardino

Mountains

ChinoHills

Santa Ana Mountains

PuenteHills

El Sobrante

de San Jacinto

LakeviewMountains

354

240

260226

312261

337320

434

334443

297

579

756

717720

750 733790

365

1020

544

3190 220384

1030

3362

477

760

295

564

908

Other Map Features

Management Zone Boundary

Compute TDS and Nitrate Objectives

TIN/TDS Phase 2A -- Task 5

MapArea

Figure 5-1bCurrent Ambient Water Quality

Total Dissolved Solids

s:\clients\sawpa\tintds2a\task 5\figures_tables\figs_5-1_thru_5-4.apr

WE WILDERMUTHENVIRONMENTAL, INC.

Date: July, 2000Prepared by: JPL/AEM

5 0 5 10 MilesN

Current Ambient TDS (mg/L)

Data not Available

Outside Study Area

< 250

250 to 300

300 to 400

400 to 500

500 to 700

700 to 1000

> 1000

Semi-consolidated Sediments

Consolidated Bedrock

1978-1997

Pacific Ocean

San Gabriel

Mountains

San Bernardino

Mountains

ChinoHills

Santa Ana Mountains

PuenteHills

El Sobrante

de San Jacinto

LakeviewMountains

2.7

1.5

2.42.0

2.97.3

4.9 7.62.7

4.26.2

1.9

12.1

8.3

13.34.1

5.2 1.0

19.5

25.5

10.5

1.4

1.7

2.0

2.5 2.51.5

4.1

5.92.8

1.0

13.3

3.5

3.4

Compute TDS and Nitrate Objectives

TIN/TDS Phase 2A -- Task 5

MapArea

Figure 5-2aHistorical Ambient Water Quality

Nitrate-N

WE WILDERMUTHENVIRONMENTAL, INC.5 0 5 10 Miles

N

Historical Ambient Nitrate as N (mg/L)

Data not Available

Outside Study Area

< 2

2 to 4

4 to 8

8 to 16

>16

Semi-consolidated Sediments

Consolidated Bedrock

Other Map Features

Management Zone Boundary

s:\clients\sawpa\tintds2a\task 5\figures_tables\figs_5-1_thru_5-4.apr

1954-1973

Prepared by: JPL/AEM Date: July, 2000

Pacific Ocean

San Gabriel

Mountains

San Bernardino

Mountains

ChinoHills

Santa Ana Mountains

PuenteHills

El Sobrante

de San Jacinto

LakeviewMountains

4.5

2.8

4.42.7

7.7 5.5

9.4 8.12.9

5.24.4

2.7

9.5

15.5

14.810.3

4.71.9

12.8

3.4 1.9

2.9

2.5

4.9 1.62.6

5.2

7.4 5.4

2.6

29.1

6.9

s:\clients\sawpa\tintds2a\task 5\figures_tables\figs_5-1_thru_5-4.apr

Management Zone Boundary

Other Map Features

Consolidated Bedrock

Semi-consolidated Sediments

>16

8 to 16

4 to 8

2 to 4

< 2

Outside Study Area

Data not Available

Current Ambient Nitrate as N (mg/L)

N5 0 5 10 Miles ENVIRONMENTAL, INC.

WILDERMUTHWE

Current Ambient Water QualityNitrate-N

Figure 5-2b

MapArea

TIN/TDS Phase 2A -- Task 5Compute TDS and Nitrate Objectives

1978-1997

Prepared by: JPL/AEM Date: July, 2000

Pacific Ocean

San Gabriel

Mountains

San Bernardino

Mountains

ChinoHills

Santa Ana Mountains

PuenteHills

El Sobrante

San Jacinto

-4

72

3

1

-15

15

31

-14

2341

1932

475

68

298

44

213

-71

48

27

-4

-117 -86

37

182

-24

41

33

70

44

57

30

LakeviewMountains

-21

0

Compute TDS and Nitrate Objectives

TIN/TDS Phase 2A -- Task 5

MapArea

Figure 5-3Difference in Ambient Water Quality

(Current minus Historical)Total Dissolved Solids

WE WILDERMUTHENVIRONMENTAL, INC.

Date: July, 2000Prepared by: JPL/AEM

5 0 5 10 MilesN

Difference in AmbientWater Quality (mg/L)

< -100

-50 to -100

0 to -50

50 to 0

100 to 50

500 to 100

> 500

Outside Study Area

Data not Available

Other Map Features

Management Zone Boundary

Consolidated Bedrock

Semi-consolidated Sediments

s:\clients\sawpa\tintds2a\task 5\figures_tables\figs_5-1_thru_5-4.apr

Pacific Ocean

San Gabriel

Mountains

San Bernardino

Mountains

ChinoHills

Santa Ana Mountains

PuenteHills

El Sobrante

San Jacinto

0.7

7.2

1.1

1.6

2.3

1.0

0.5

-0.9

2.6

2.4

1.2

0.5

1.1

0.5

0.9

-1.80.2

1.5

-1.8 -2.6

0.8

-0.5

1.3

1.8

4.5

2.0

4.8

15.8

6.2

3.4

1.5

LakeviewMountains

0

> 5

5 to 2

2 to 1

1 to 0

0 to -1

-1 to -2

< -2

Data not Available

Outside Study Area

N5 0 5 10 Miles

Prepared by: JPL/AEM Date: July, 2000

ENVIRONMENTAL, INC.WILDERMUTHWE

Figure 5-4

MapArea

TIN/TDS Phase 2A -- Task 5Compute TDS and Nitrate Objectives

Difference in AmbientWater Quality (mg/L)

Difference in Ambient Water Quality(Current minus Historical)

Nitrate-N

Semi-consolidated Sediments

Consolidated Bedrock

Management Zone Boundary

Other Map Features

s:\clients\sawpa\tintds2a\task 5\figures_tables\figs_5-1_thru_5-4.apr