Appendix B:
Regional Water Quality Control Board's 1998 303(d) List and TMDL Priority Schedule for Water Bodies that Drain into the Sanctuary

San Gregorio Creek

Sedimentation/siltation

Nonpoint source

16 miles

2000 - 2005

Pescadero Creek

Sedimentation/siltation

Nonpoint source

21 miles

2000 - 2005

Waddell Creek, East Branch

Nutrients

Municipal point sources

3 miles

04/01 - 04/05

San Lorenzo River

Nutrients

Septage disposal; nonpoint source

25 miles

04/93-04/00

Pathogens

Urban runoff/storm sewers; septage disposal

25 miles

1999 - 2001

Sedimentation/siltation

Silviculture; construction/land development; land development; urban runoff/ storm sewers

25 miles

12/98 - 04/00

San Lorenzo River Estuary

Pathogens

Urban runoff/storm sewers; natural sources

20 acres

04/99 - 04/01

Sedimentation/siltation

Hydromodification

20 acres

01/98 - 04/00

Schwan Lake

Nutrients

Nonpoint source

32 acres

04/06 - 04/11

Pathogens

Urban runoff/storm sewers; natural sources

32 acres

04/06 - 04/11

Carbonera Creek

Nutrients

Nonpoint source

10 miles

04/93 - 04/00

Pathogens

Urban runoff/storm sewers; nonpoint source

10 miles

04/99 - 04/01

Sedimentation/siltation

Construction/land development; nonpoint source

10 miles

01/98 - 04/00

Clear Creek

Mercury

Resource extraction

2 miles

01/98 - 04/03

Lompico Creek

Nutrients

Septage disposal

5 miles

04/93 - 04/00

Pathogens

Septage disposal; natural sources; nonpoint source

5 miles

04/99 - 04/01

Sedimentation/siltation

Construction/land development; natural sources

5 miles

01/98 - 04/00

Shingle Mill Creek

Nutrients

Septage disposal

2 miles

01/98 - 04/01

Sedimentation/siltation

Construction/land development; nonpoint source

2 miles

01/98 - 04/01

Valencia Creek

Pathogens

Agriculture; septage disposal

7 miles

04/06 - 04/11

Sedimentation/siltation

Agriculture; construction/land development

7 miles

04/01 - 04/05

Soquel Lagoon

Nutrients

Septage disposal; nonpoint source

2 acres

04/03 - 04/07

Pathogens

Urban runoff/storm sewers; natural sources; nonpoint source

2 acres

04/03 - 04/07

Sedimentation/siltation

Construction/land development

2 acres

04/01 - 04/05

Aptos Creek

Pathogens

Urban runoff/storm sewers

4 miles

04/05 - 04/11

Sedimentation/siltation

Disturbed sites (land development); channel erosion

4 miles

01/01 - 04/01

Rider Gulch Creek

Sedimentation/siltation

Agriculture; silviculture; construction/land development

2 miles

01/98 - 04/01

Watsonville Slough

Metals

Agriculture; urban runoff/storm sewers

300 acres

01/99 - 04/03

Oil and grease

Urban runoff/storm sewers; nonpoint source

300 acres

01/99 - 04/03

Pathogens

Urban runoff/storm sewers; source unknown; nonpoint source

300 acres

01/99 - 04/03

Pesticides

Agriculture; irrigated crop production; agriculture - storm runoff; agricultural return flows; nonpoint source

300 acres

01/99 - 04/03

Sedimentation/siltation

Agriculture; irrigated crop production; agriculture - storm runoff; nonpoint source

300 acres

01/98 - 04/01

Pajaro River

Nutrients

Agriculture; irrigated crop production; agriculture - storm runoff; agriculture - subsurface drainage; agriculture - irrigation tailwater; agricultural return flows; urban runoff/storm sewers; wastewater - land disposal; channelization; removal of riparia

49 miles

01/98 - 04/01

Sedimentation/siltation

Agriculture; irrigated crop production; range land; agriculture - storm runoff; resource extraction; surface mining; hydromodification; channelization; habitat modification; removal of riparian vegetation; streambank modification/ destabilization; channel

49 miles

01/98 - 04/01

L lagas Creek

Nutrients

Municipal point sources; agriculture; irrigated crop production; pasture land; agriculture - storm runoff; agriculture - irrigation tailwater; agricultural return flows; urban runoff/storm sewers; habitat modification; nonpoint source; point source

22 miles

01/98 - 04/01

Sedimentation/siltation

Agriculture; hydro- modification; habitat modification

22 miles

01/98 - 04/01

San Benito River

Sedimentation/siltation

Agriculture; resource extraction; nonpoint source

86 miles

01/98 - 04/01

Moss Landing Harbor

Pathogens

Agriculture; nonpoint source; boat discharges/vessel wastes

40 acres

04/05 - 04/09

Pesticides

Agriculture; irrigated crop production; specialty crop production

160 acres

04/05 - 04/09

Sedimentation/siltation

Agriculture; irrigated crop production; agriculture - storm runoff; hydromodification; dredging (hydromodification); channel erosion; erosion/ siltation; nonpoint source

160 acres

04/05 - 04/09

Elkhorn Slough

Pathogens

Natural sources; nonpoint source

500 acres

04/05 - 04/09

Pesticides

Agriculture; irrigated crop production; agriculture - storm runoff; agricultural return flows; contaminated sediments; erosion/siltation; nonpoint source

500 acres

04/05 - 04/09

Sedimentation/siltation

Agriculture; irrigated crop production; agriculture - storm runoff; channel erosion; nonpoint source

50 acres

04/05 - 04/09

Hernandez Reservoir

Mercury

Subsurface mining

619 acres

01/98 - 04/03

Moro Cojo Slough

Pesticides

Agriculture; irrigated crop production; agriculture - storm runoff; agricultural return flows; nonpoint source

345 acres

01/98 - 04/11

Sedimentation/siltation

Agriculture; irrigated crop production; agriculture - storm runoff; construction/land development; nonpoint source

345 acres

01/98 - 04/11

Tembladero Slough

Nutrients

Agriculture; irrigated crop production; agriculture - storm runoff; agricultural return flows; nonpoint source

150 acres

01/98 - 04/03

Pesticides

Agriculture; irrigated crop production; agriculture - storm runoff; agricultural return flows; nonpoint source

150 acres

01/98 - 04/03

Old Salinas River Estuary

Nutrients

Agriculture; irrigated crop production; agricultural return flows; nonpoint source

50 acres

01/98 - 04/03

Pesticides

Agriculture; irrigated crop production; agriculture - storm runoff; agriculture - irrigation tailwater; agricultural return flows; nonpoint source

50 acres

01/98 - 04/03

Salinas River

Nutrients

Agriculture

50 miles

01/98 - 04/03

Pesticides

Agriculture; irrigated crop production; agriculture - storm runoff; agriculture - irrigation tailwater; agricultural return flows; nonpoint source

50 miles

01/98 - 04/03

Salinity/TDS/chlorides

Agriculture

50 miles

01/98 - 04/03

Sedimentation/siltation

Agriculture; irrigated crop production; range land; agriculture - storm runoff; road; construction; land development; channel erosion; nonpoint source

50 miles

01/98 - 04/01

Salinas Reclamation Canal

Pesticides

Minor industrial point source; agriculture; irrigated crop production; agriculture - storm runoff; agriculture - irrigation tailwater; agricultural return flows; nonpoint source

20 miles

01/98 - 04/05

Priority organics

Minor industrial point source; agriculture; irrigated crop production; agriculture - storm runoff; agriculture - irrigation tailwater; agricultural return flows; urban runoff/storm sewers; source unknown; nonpoint source

20 miles

01/98 - 04/05

Salinas River Lagoon (North)

Nutrients

Nonpoint source

75 acres

01/98 - 04/03

Pesticides

Agriculture

75 acres

01/98 - 04/03

Sedimentation/siltation

Nonpoint source

75 acres

01/98 - 04/01

Salinas River Refuge Lagoon (South)

Nutrients

Agriculture

163 acres

01/98 - 04/01

Pesticides

Agriculture

163 acres

01/98 - 04/03

Salinity/TDS/chlorides

Agriculture

163 acres

01/98 - 04/03

Blanco Drain

Pesticides

Agriculture; irrigated crop production; agriculture - storm runoff; agriculture - irrigation tailwater; agricultural return flows; nonpoint source

8 miles

01/98 - 04/05

Espinosa Slough

Nutrients

Agriculture; storm sewers

320 acres

01/98 - 04/03

Pesticides

Agriculture; urban runoff/storm sewers

320 acres

01/98 - 04/03

Priority organics

Nonpoint source

320 acres

01/98 - 04/03

Monterey Harbor

Metals

Railroad slag pile

74 acres

01/98 - 04/03

Unknown toxicity

Source unknown

74 acres

01/98 - 04/11

Monterey Bay South

Metals

Surface Mining

10 miles

01/98 - 04/11

Pesticides

Agriculture

10 miles

01/98 - 04/11

Nacimiento Reservoir

Metals

Subsurface mining; natural sources

5370 acres

09/97 - 04/00

Las Tablas Creek

Metals

Surface Mining

13 miles

09/97 - 04/00

Las Tablas Creek, North Fork

Metals

Surface Mining

5 miles

09/97 - 04/00

Las Tablas Creek, South Fork

Metals

Surface Mining

4 miles

09/97 - 04/00