Line of Evidence (LOE) for Decision ID 72737, Indicator Bacteria
|
Region 1 |
Goat Rock State Park Beach |
|
|
LOE ID: |
32732 |
|
Pollutant: |
Fecal Coliform |
LOE Subgroup: |
Pollutant-Water |
Matrix: |
Water |
Fraction: |
None |
|
Beneficial Use: |
Water Contact Recreation |
|
Number of Samples: |
99 |
Number of Exceedances: |
0 |
|
Data and Information Type: |
Not Specified |
Data Used to Assess Water Quality: |
Zero of the 99 geomeans exceeded the objective. |
Data Reference: |
Data for Region 1 Beach Watch. |
|
SWAMP Data: |
Non-SWAMP |
|
Water Quality Objective/Criterion: |
The geometric mean standard for fecal coliform states that the coliform density shall not exceed 200 MPN per 100 mL. Water Quality Control Plan for Ocean Waters (SWRCB 2009). |
Objective/Criterion Reference: |
California Ocean Plan Water Quality Control Plan Ocean Waters of California 2009 |
|
Evaluation Guideline: |
|
Guideline Reference: |
|
Spatial Representation: |
Samples were collected at Goat Rock State Park Beach. |
Temporal Representation: |
Samples were collected approximately once a week from 2007 to 2010. |
Environmental Conditions: |
|
QAPP Information: |
The samples were collected for the beach watch program. |
QAPP Information Reference(s): |
|
Line of Evidence (LOE) for Decision ID 72737, Indicator Bacteria
|
Region 1 |
Goat Rock State Park Beach |
|
|
LOE ID: |
25272 |
|
Pollutant: |
Enterococcus |
LOE Subgroup: |
Pollutant-Water |
Matrix: |
Water |
Fraction: |
Total |
|
Beneficial Use: |
Water Contact Recreation |
|
Number of Samples: |
74 |
Number of Exceedances: |
0 |
|
Data and Information Type: |
PATHOGEN MONITORING |
Data Used to Assess Water Quality: |
None of the 74 single samples of enterococcus collected at Goat Rock State Park Beach exceed the objective. Additionally, none of the 16 30-day geomean values exceed the objective. The single sample and geomean values are two different matrices used Sonoma County Division of Environmental Health in accordance with AB411 (Chapter 765, Statutes of 1997) requirements. Data is maintained by the State Water Board's Beach Watch program. Data is summarized by the North Coast Regional Water Board (North Coast RWQCB 2007). |
Data Reference: |
North Coast Beach Watch Data. Bacteria data collected by Del Norte County, Humboldt County, Mendocino County Environmental Health Division, Sonoma County Division of Environmental Health, and Marin County in accordance with AB411. Data managed by the State Water Resources Control Board's Beach Watch program at beachwatch.waterboards.ca.gov. Includes data from 2004 to 2006 |
|
SWAMP Data: |
Non-SWAMP |
|
Water Quality Objective/Criterion: |
Per the Ocean Plan (SWRCB 2005): The following bacterial objectives shall be maintained throughout the water column. The following standard is based on the 30-day geometric mean of the 5 most recent samples from each site: Enterococcus density shall not exceed 35 MPN per 100ml. The following standard is for the single sample maximum: Enterococcus density shall not exceed 104 per 100 ml. *Note: MPN is the most probable number of coliform units. |
Objective/Criterion Reference: |
Water Quality Control Plan Ocean Waters of California. California Ocean Plan 2005. Sacramento, CA: State Water Resources Control Board, California Environmental Protection Agency |
|
Evaluation Guideline: |
|
Guideline Reference: |
|
Spatial Representation: |
Samples were collected at Goat Rock State Park Beach. |
Temporal Representation: |
Samples were collected weekly from April to December 2005 and from April to October 2006. |
Environmental Conditions: |
Samples were collected during the dry season. Otherwise, there are no known environmental conditions (e.g., land use practices, fire events, storms, etc.) that are related to these data. |
QAPP Information: |
Samples were collected in accordance with the procedures described in "Environmental Health Policy and Procedure No. 00-1" (Krug 2000). |
QAPP Information Reference(s): |
Environmental Health Policy and Procedure No. 00-1. Subject: Ocean Water Sampling Program Procedures. County of Sonoma Department of Health Services |
|
Line of Evidence (LOE) for Decision ID 72737, Indicator Bacteria
|
Region 1 |
Goat Rock State Park Beach |
|
|
LOE ID: |
133647 |
|
Pollutant: |
Enterococcus |
LOE Subgroup: |
Pollutant-Water |
Matrix: |
Water |
Fraction: |
None |
|
Beneficial Use: |
Water Contact Recreation |
|
Number of Samples: |
354 |
Number of Exceedances: |
0 |
|
Data and Information Type: |
PATHOGEN MONITORING |
Data Used to Assess Water Quality: |
Water Board staff assessed Beachwatch_Sonoma County data for Goat Rock State Park Beach to determine beneficial use support and the results are as follows: 0 of the 354 samples exceeded the geomean water quality standard for Enterococcus. This is a six week rolling geomean that is calculated weekly. |
Data Reference: |
Sonoma County Beachwatch data reformatted to match CEDEN fields. |
|
SWAMP Data: |
Non-SWAMP |
|
Water Quality Objective/Criterion: |
The bacteria water quality objective to protect the REC-1 beneficial for all ocean waters , is a six-week rolling GM of Enterococci not to exceed 30 cfu/100mL (calculated weekly). |
Objective/Criterion Reference: |
California Ocean Plan Water Quality Control Plan Ocean Waters of California 2009 |
|
Evaluation Guideline: |
|
Guideline Reference: |
|
Spatial Representation: |
The samples were collected at 1 monitoring site(s), station(s): Goat Rock |
Temporal Representation: |
The samples were collected between the days of 1999-08-09 and 2017-05-01 . |
Environmental Conditions: |
|
QAPP Information: |
Data exempt from QAPP requirement. Draft QAPP for Sonoma County Beachwatch data used instead. Represents data collection procedure prior to development of a formal QAPP. |
QAPP Information Reference(s): |
Draft QAPP for Sonoma County Beachwatch. Represents data collection procedure prior to development of a formal QAPP.
|
|
Line of Evidence (LOE) for Decision ID 72737, Indicator Bacteria
|
Region 1 |
Goat Rock State Park Beach |
|
|
LOE ID: |
133595 |
|
Pollutant: |
Enterococcus |
LOE Subgroup: |
Pollutant-Water |
Matrix: |
Water |
Fraction: |
None |
|
Beneficial Use: |
Water Contact Recreation |
|
Number of Samples: |
109 |
Number of Exceedances: |
2 |
|
Data and Information Type: |
PATHOGEN MONITORING |
Data Used to Assess Water Quality: |
Water Board staff assessed Beachwatch_Sonoma County data for Goat Rock State Park Beach to determine beneficial use support and the results are as follows: 2 of the 109 samples exceeded the Statistical Threshold Value (STV) water quality standard for Enterococcus. The STV is based on a 10% exceedance rate that is calculated monthly. |
Data Reference: |
Sonoma County Beachwatch data reformatted to match CEDEN fields. |
|
SWAMP Data: |
Non-SWAMP |
|
Water Quality Objective/Criterion: |
The bacteria water quality objective to protect the REC-1 beneficial for all ocean waters, is a Statistical Threshold Value (STV) of 110 cfu/100 mL not to be exceeded more than 10 percent of the time (calculated monthly). |
Objective/Criterion Reference: |
California Ocean Plan Water Quality Control Plan Ocean Waters of California 2009 |
|
Evaluation Guideline: |
|
Guideline Reference: |
|
Spatial Representation: |
The samples were collected at 1 monitoring site(s), station(s): Goat Rock |
Temporal Representation: |
The samples were collected between the days of 1999-08-09 and 2017-05-01 . |
Environmental Conditions: |
|
QAPP Information: |
Data exempt from QAPP requirement. Draft QAPP for Sonoma County Beachwatch data used instead. Represents data collection procedure prior to development of a formal QAPP. |
QAPP Information Reference(s): |
Draft QAPP for Sonoma County Beachwatch. Represents data collection procedure prior to development of a formal QAPP.
|
|
Line of Evidence (LOE) for Decision ID 72737, Indicator Bacteria
|
Region 1 |
Goat Rock State Park Beach |
|
|
LOE ID: |
44734 |
|
Pollutant: |
Enterococcus |
LOE Subgroup: |
Pollutant-Water |
Matrix: |
Water |
Fraction: |
None |
|
Beneficial Use: |
Water Contact Recreation |
|
Number of Samples: |
114 |
Number of Exceedances: |
2 |
|
Data and Information Type: |
PATHOGEN MONITORING |
Data Used to Assess Water Quality: |
2 of 114 samples exceed the criterion for Enterococci. |
Data Reference: |
Data for Region 1 Beach Watch. |
|
SWAMP Data: |
Non-SWAMP |
|
Water Quality Objective/Criterion: |
California Ocean Plan (SWRCB 2009) states that the single sample maximum for Enterococcus shall not exceed 104 MPN/100 mL. |
Objective/Criterion Reference: |
California Ocean Plan Water Quality Control Plan Ocean Waters of California 2009 |
|
Evaluation Guideline: |
|
Guideline Reference: |
|
Spatial Representation: |
Data for this line of evidence for Goat Rock State Park Beach was collected at 1 monitoring site [ Goat Rock State Beach] |
Temporal Representation: |
Data was collected over the time period 4/2/2007-2/16/2010. |
Environmental Conditions: |
Staff is not aware of any special conditions that might affect interpretation of the data. |
QAPP Information: |
The samples were collected for the Beach Watch program. |
QAPP Information Reference(s): |
|
Line of Evidence (LOE) for Decision ID 72737, Indicator Bacteria
|
Region 1 |
Goat Rock State Park Beach |
|
|
LOE ID: |
133689 |
|
Pollutant: |
Enterococcus |
LOE Subgroup: |
Pollutant-Water |
Matrix: |
Water |
Fraction: |
None |
|
Beneficial Use: |
Water Contact Recreation |
|
Number of Samples: |
330 |
Number of Exceedances: |
0 |
|
Data and Information Type: |
PATHOGEN MONITORING |
Data Used to Assess Water Quality: |
Water Board staff assessed Beachwatch_Sonoma County data for Goat Rock State Park Beach to determine beneficial use support and the results are as follows: 0 of the 330 samples exceeded the geomean water quality standard for Enterococcus. This is a six week rolling geomean that is calculated weekly. This data is for an AB411 beach. This LOE specifically corresponds with dry weather samples and only includes samples collected between April 1 and October 31 of each year. |
Data Reference: |
Sonoma County Beachwatch data reformatted to match CEDEN fields. |
|
SWAMP Data: |
Non-SWAMP |
|
Water Quality Objective/Criterion: |
The bacteria water quality objective to protect the REC-1 beneficial for all ocean waters , is a six-week rolling GM of Enterococci not to exceed 30 cfu/100mL (calculated weekly). |
Objective/Criterion Reference: |
California Ocean Plan Water Quality Control Plan Ocean Waters of California 2009 |
|
Evaluation Guideline: |
|
Guideline Reference: |
|
Spatial Representation: |
The samples were collected at 1 monitoring site(s), station(s): Goat Rock |
Temporal Representation: |
The samples were collected between the days of 1999-08-09 and 2017-05-01 . |
Environmental Conditions: |
|
QAPP Information: |
Data exempt from QAPP requirement. Draft QAPP for Sonoma County Beachwatch data used instead. Represents data collection procedure prior to development of a formal QAPP. |
QAPP Information Reference(s): |
Draft QAPP for Sonoma County Beachwatch. Represents data collection procedure prior to development of a formal QAPP.
|
|
Line of Evidence (LOE) for Decision ID 72737, Indicator Bacteria
|
Region 1 |
Goat Rock State Park Beach |
|
|
LOE ID: |
133687 |
|
Pollutant: |
Enterococcus |
LOE Subgroup: |
Pollutant-Water |
Matrix: |
Water |
Fraction: |
None |
|
Beneficial Use: |
Water Contact Recreation |
|
Number of Samples: |
100 |
Number of Exceedances: |
1 |
|
Data and Information Type: |
PATHOGEN MONITORING |
Data Used to Assess Water Quality: |
Water Board staff assessed Beachwatch_Sonoma County data for Goat Rock State Park Beach to determine beneficial use support and the results are as follows: 1 of the 100 samples exceeded the Statistical Threshold Value (STV) water quality standard for Enterococcus. The STV is based on a 10% exceedance rate that is calculated monthly. This data is for an AB411 beach. This LOE specifically corresponds with dry weather samples and only includes samples collected between April 1 and October 31 of each year. |
Data Reference: |
Sonoma County Beachwatch data reformatted to match CEDEN fields. |
|
SWAMP Data: |
Non-SWAMP |
|
Water Quality Objective/Criterion: |
The bacteria water quality objective to protect the REC-1 beneficial for all ocean waters, is a Statistical Threshold Value (STV) of 110 cfu/100 mL not to be exceeded more than 10 percent of the time (calculated monthly). |
Objective/Criterion Reference: |
California Ocean Plan Water Quality Control Plan Ocean Waters of California 2009 |
|
Evaluation Guideline: |
|
Guideline Reference: |
|
Spatial Representation: |
The samples were collected at 1 monitoring site(s), station(s): Goat Rock |
Temporal Representation: |
The samples were collected between the days of 1999-08-09 and 2017-05-01 . |
Environmental Conditions: |
|
QAPP Information: |
Data exempt from QAPP requirement. Draft QAPP for Sonoma County Beachwatch data used instead. Represents data collection procedure prior to development of a formal QAPP. |
QAPP Information Reference(s): |
Draft QAPP for Sonoma County Beachwatch. Represents data collection procedure prior to development of a formal QAPP.
|
|
Line of Evidence (LOE) for Decision ID 72737, Indicator Bacteria
|
Region 1 |
Goat Rock State Park Beach |
|
|
LOE ID: |
32718 |
|
Pollutant: |
Enterococcus |
LOE Subgroup: |
Pollutant-Water |
Matrix: |
Water |
Fraction: |
None |
|
Beneficial Use: |
Water Contact Recreation |
|
Number of Samples: |
99 |
Number of Exceedances: |
1 |
|
Data and Information Type: |
Not Specified |
Data Used to Assess Water Quality: |
One of the 99 geomeans exceeded the objective. |
Data Reference: |
Data for Region 1 Beach Watch. |
|
SWAMP Data: |
Non-SWAMP |
|
Water Quality Objective/Criterion: |
The geometric mean standard for entercoccus states that the enterococcus density shall not exceed 35 per 100 mL. Water Quality Control Plan for Ocean Waters 2009. |
Objective/Criterion Reference: |
California Ocean Plan Water Quality Control Plan Ocean Waters of California 2009 |
|
Evaluation Guideline: |
|
Guideline Reference: |
|
Spatial Representation: |
Samples were collected at Goat Rock State Park Beach. |
Temporal Representation: |
Samples were collected approximately once a week from 2007 to 2010. |
Environmental Conditions: |
|
QAPP Information: |
The samples were collected for the Beach Watch program. |
QAPP Information Reference(s): |
|
Line of Evidence (LOE) for Decision ID 72737, Indicator Bacteria
|
Region 1 |
Goat Rock State Park Beach |
|
|
LOE ID: |
44597 |
|
Pollutant: |
Fecal Coliform |
LOE Subgroup: |
Pollutant-Water |
Matrix: |
Water |
Fraction: |
None |
|
Beneficial Use: |
Water Contact Recreation |
|
Number of Samples: |
114 |
Number of Exceedances: |
0 |
|
Data and Information Type: |
PATHOGEN MONITORING |
Data Used to Assess Water Quality: |
0 of 114 samples exceed the criterion for Fecal Coliform. |
Data Reference: |
Data for Region 1 Beach Watch. |
|
SWAMP Data: |
Non-SWAMP |
|
Water Quality Objective/Criterion: |
California Ocean Plan (SWRCB 2009) states that the single sample maximum for fecal coliform shall not exceed 400 MPN/100 mL |
Objective/Criterion Reference: |
California Ocean Plan Water Quality Control Plan Ocean Waters of California 2009 |
|
Evaluation Guideline: |
|
Guideline Reference: |
|
Spatial Representation: |
Data for this line of evidence for Goat Rock State Park Beach was collected at 1 monitoring site [ Goat Rock State Beach] |
Temporal Representation: |
Data was collected over the time period 4/2/2007-2/16/2010. |
Environmental Conditions: |
Staff is not aware of any special conditions that might affect interpretation of the data. |
QAPP Information: |
The samples were collected for the Beach Watch program. |
QAPP Information Reference(s): |
|
Line of Evidence (LOE) for Decision ID 72737, Indicator Bacteria
|
Region 1 |
Goat Rock State Park Beach |
|
|
LOE ID: |
133617 |
|
Pollutant: |
Total Coliform |
LOE Subgroup: |
Pollutant-Water |
Matrix: |
Water |
Fraction: |
None |
|
Beneficial Use: |
Shellfish Harvesting |
|
Number of Samples: |
437 |
Number of Exceedances: |
19 |
|
Data and Information Type: |
PATHOGEN MONITORING |
Data Used to Assess Water Quality: |
Water Board staff assessed Beachwatch_Sonoma County data for Goat Rock State Park Beach to determine beneficial use support and the results are as follows: 19 of the 437 samples exceeded the water quality standard for Coliform, Total. The water quality standard for shellfish is based on the median concentration of Total Coliform at each station, and is calculated on a monthly basis. |
Data Reference: |
Sonoma County Beachwatch data reformatted to match CEDEN fields. |
|
SWAMP Data: |
Non-SWAMP |
|
Water Quality Objective/Criterion: |
California Ocean Plan (SWRCB 2018) states that the median concentration of total coliform samples shall not exceed 70 per 100 ml. |
Objective/Criterion Reference: |
California Ocean Plan Water Quality Control Plan Ocean Waters of California 2009 |
|
Evaluation Guideline: |
|
Guideline Reference: |
|
Spatial Representation: |
The samples were collected at 1 monitoring site(s), station(s): Goat Rock |
Temporal Representation: |
The samples were collected between the days of 1999-08-09 and 2017-05-01 . |
Environmental Conditions: |
|
QAPP Information: |
Data exempt from QAPP requirement. Draft QAPP for Sonoma County Beachwatch data used instead. Represents data collection procedure prior to development of a formal QAPP. |
QAPP Information Reference(s): |
Draft QAPP for Sonoma County Beachwatch. Represents data collection procedure prior to development of a formal QAPP.
|
|
Line of Evidence (LOE) for Decision ID 72737, Indicator Bacteria
|
Region 1 |
Goat Rock State Park Beach |
|
|
LOE ID: |
47627 |
|
Pollutant: |
Total Coliform |
LOE Subgroup: |
Pollutant-Water |
Matrix: |
Water |
Fraction: |
None |
|
Beneficial Use: |
Shellfish Harvesting |
|
Number of Samples: |
113 |
Number of Exceedances: |
6 |
|
Data and Information Type: |
PATHOGEN MONITORING |
Data Used to Assess Water Quality: |
6 of 113 samples exceed the objective of 230 MPN/100mL applied as a single sample maximum for Total Coliform. |
Data Reference: |
Data for Region 1 Beach Watch. |
|
SWAMP Data: |
Non-SWAMP |
|
Water Quality Objective/Criterion: |
The California Ocean Plan states the following: At all areas where shellfish may be harvested for human consumption, the following bacterial objectives shall be maintained throughout the water column: Ten percent of the samples collected during any 30-day period shall not exceed 230 MPN/100mL. |
Objective/Criterion Reference: |
California Ocean Plan Water Quality Control Plan Ocean Waters of California 2009 |
|
Evaluation Guideline: |
|
Guideline Reference: |
|
Spatial Representation: |
Data for this line of evidence for Goat Rock State Park Beach was collected at 1 monitoring site [ Goat Rock State Beach] |
Temporal Representation: |
Data was collected over the time period 4/2/2007-2/16/2010. |
Environmental Conditions: |
Staff is not aware of any special conditions that might affect interpretation of the data. |
QAPP Information: |
The samples were collected for the Beach Watch program. |
QAPP Information Reference(s): |
|
Line of Evidence (LOE) for Decision ID 72737, Indicator Bacteria
|
Region 1 |
Goat Rock State Park Beach |
|
|
LOE ID: |
47628 |
|
Pollutant: |
Total Coliform |
LOE Subgroup: |
Pollutant-Water |
Matrix: |
Water |
Fraction: |
None |
|
Beneficial Use: |
Shellfish Harvesting |
|
Number of Samples: |
98 |
Number of Exceedances: |
4 |
|
Data and Information Type: |
PATHOGEN MONITORING |
Data Used to Assess Water Quality: |
4 of 98 samples exceed the objective of 70 MPN/100mL applied as a rolling 30 day geomean for Total Coliform. |
Data Reference: |
Data for Region 1 Beach Watch. |
|
SWAMP Data: |
Non-SWAMP |
|
Water Quality Objective/Criterion: |
The California Ocean Plan states that at all areas where shellfish may be harvested for human consumption, the median total coliform density shall not exceed 70 per 100 mL. Staff applied the objective as a rolling 30 day geometric mean consistent with other state bacteria objectives and with guidance from the National Shellfish Sanitation Program from which the objectives were taken. |
Objective/Criterion Reference: |
California Ocean Plan Water Quality Control Plan Ocean Waters of California 2009 |
|
Evaluation Guideline: |
|
Guideline Reference: |
|
Spatial Representation: |
Data for this line of evidence for Goat Rock State Park Beach was collected at 1 monitoring site [ Goat Rock State Beach] |
Temporal Representation: |
Data was collected over the time period 4/2/2007-2/16/2010. |
Environmental Conditions: |
Staff is not aware of any special conditions that might affect interpretation of the data. |
QAPP Information: |
The samples were collected for the Beach Watch program. |
QAPP Information Reference(s): |
|
Line of Evidence (LOE) for Decision ID 72737, Indicator Bacteria
|
Region 1 |
Goat Rock State Park Beach |
|
|
LOE ID: |
25271 |
|
Pollutant: |
Fecal Coliform |
LOE Subgroup: |
Pollutant-Water |
Matrix: |
Water |
Fraction: |
Total |
|
Beneficial Use: |
Water Contact Recreation |
|
Number of Samples: |
74 |
Number of Exceedances: |
0 |
|
Data and Information Type: |
PATHOGEN MONITORING |
Data Used to Assess Water Quality: |
None of the 74 single samples of fecal coliform collected at Goat Rock State Park Beach exceed the objective. Additionally, none of the 16 30-day geomean values exceed the objective. The single sample and geomean values are two different matrices used Sonoma County Division of Environmental Health in accordance with AB411 (Chapter 765, Statutes of 1997) requirements. Data is maintained by the State Water Board's Beach Watch program. Data is summarized by the North Coast Regional Water Board (North Coast RWQCB 2007). |
Data Reference: |
North Coast Beach Watch Data. Bacteria data collected by Del Norte County, Humboldt County, Mendocino County Environmental Health Division, Sonoma County Division of Environmental Health, and Marin County in accordance with AB411. Data managed by the State Water Resources Control Board's Beach Watch program at beachwatch.waterboards.ca.gov. Includes data from 2004 to 2006 |
|
SWAMP Data: |
Non-SWAMP |
|
Water Quality Objective/Criterion: |
Per the Ocean Plan (SWRCB 2005): The following bacterial objectives shall be maintained throughout the water column. The following standard is based on the 30-day geometric mean of the five most recent samples from each site: Fecal coliform density shall not exceed 200 MPN per 100 ml. The following standard is for the single sample maximum: Fecal coliform density shall not exceed 400 per 100ml. *Note: MPN is the most probable number of coliform units. |
Objective/Criterion Reference: |
Water Quality Control Plan Ocean Waters of California. California Ocean Plan 2005. Sacramento, CA: State Water Resources Control Board, California Environmental Protection Agency |
|
Evaluation Guideline: |
|
Guideline Reference: |
|
Spatial Representation: |
Samples were collected at Goat Rock State Park Beach. |
Temporal Representation: |
Samples were collected weekly from April to December 2005 and from April to October 2006. |
Environmental Conditions: |
Samples were collected during the dry season. Otherwise, there are no known environmental conditions (e.g., land use practices, fire events, storms, etc.) that are related to these data. |
QAPP Information: |
Samples were collected in accordance with the procedures described in "Environmental Health Policy and Procedure No. 00-1" (Krug 2000). |
QAPP Information Reference(s): |
Environmental Health Policy and Procedure No. 00-1. Subject: Ocean Water Sampling Program Procedures. County of Sonoma Department of Health Services |
|