Water Body Name: | San Leandro Creek, Lower |
Water Body ID: | CAR2042001219990218140451 |
Water Body Type: | River & Stream |
Lines of Evidence (LOEs) for Decision ID 7573 |
LOE ID: | 4792 |
Pollutant: | Chromium (total) |
LOE Subgroup: | Pollutant-Water |
Matrix: | Water |
Fraction: | Dissolved |
Beneficial Use: | Warm Freshwater Habitat |
Aquatic Life Use: | Wildlife Habitat |
Number of Samples: | 2 |
Number of Exceedances: | 0 |
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING |
Data Used to Assess Water Quality: | Water quality assessment was conducted at the confluence of the Lower San Leandro Creek watershed as part of SWAMP assessment.
Two samples collected during 2001 monitoring showed concentrations of total dissolved chromium from 14.5 to more than 30 µg/L. Dissolved chromium levels for these samples were at least an order of magnitude higher than at all other sites that were monitored and the site received an overall poor bioassessment score. The dissolved chromium concentrations were compared to the chromium III chronic criterion as chromium III occurs naturally in the environment and it is the most common form of chromium in waters around the Bay. Chromium concentrations in these samples are below the NTR objective for chromium III. |
Data Reference: | Water Quality Monitoring and Bioassessment in Nine San Francisco Bay Region Watersheds: Walker Creek, Lagunitas Creek, San Leandro Creek, Wildcat Creek/San Pablo Creek, Suisun Creek, Arroyo Las Positas, Pescadero Creek/Butano Creek, San Gregorio Creek, and Stevens Creek/Permanente Creek. Oakland, CA: Surface Water Ambient Monitoring Program, San Francisco Bay Regional Water Quality Control Board |
Water Quality Objective/Criterion: | NTR Chromium III criterion for continuous concentration (chronic objective) in water for the protection of aquatic life is 180.0µg/L. The criterion is linked and applicable in streams with waters that support warm water ecosystems, including preservation or enhancement of aquatic habitats, vegetation, fish, or wildlife, including invertebrates. |
Objective/Criterion Reference: | San Francisco Bay Basin (Region 2) Water Quality Control Plan (Basin Plan) |
Evaluation Guideline: | |
Guideline Reference: | |
Spatial Representation: | Data were collected at a sampling location at the bottom of the watershed. |
Temporal Representation: | Samples were collected during spring and dry season of 2001. |
Environmental Conditions: | Data are representative of a channelized creek flowing through residential and urban industrial areas that predominate in the Lower San Leandro Creek watershed. Lake Chabot forms a strong hydrologic divide between this part of the watershed and the upper portion of San Leandro Creek and delineates land uses and beneficial uses within the watershed. |
QAPP Information: | SWAMP Quality Assurance Management Plan (SWRCB 2002). |
QAPP Information Reference(s): | Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version) |
Lines of Evidence (LOEs) for Decision ID 7656 |
LOE ID: | 5667 |
Pollutant: | Trash |
LOE Subgroup: | Pollutant-Nuisance |
Matrix: | Not Specified |
Fraction: | None |
Beneficial Use: | Wildlife Habitat |
Number of Samples: | 9 |
Number of Exceedances: | 9 |
Data and Information Type: | Occurrence of conditions judged to cause impairment |
Data Used to Assess Water Quality: | Data available consist of photographic evidence of trash and interpretation of these photos by an experienced trash assessment specialist. Each photograph was analyzed to establish the RTA score for the level of trash and threat to aquatic life parameters, which relate to impairment of REC2 and WILD, respectively. Only those photos clear enough to establish these RTA scores were relied on for the listing determination. These results are available for the following dates and locations on Lower San Leandro Creek:
98th Ave. on 4/11/2001, 12/20/2002, 12/10/2003, 12/16/2004, 12/26/2004, 1/5/2005, 1/11/2006, and 2/23/2007 Hegenberger Road on 4/11/2001, and 2/23/2007 Leet Drive on 12/10/2003, and 1/11/2006 This waterbody had threat to aquatic life parameter scores in the poor category (indicating threat to Wildlife Habitat beneficial uses) at three different locations on six different dates. |
Data Reference: | Report from Roger James and Larry Kolb containing Trash Photos submitted for consideration in 2008 303(d) listing process |
Assessment by Matt Cover of Trash Photos (submitted to Region 2 in response to 2008 Data Solicitation) | |
Archive of Trash Photos for Lower San Leandro Creek submitted for 2008 303(d) list consideration | |
Water Quality Objective/Criterion: | The Basin Plan prohibits discharge of Rubbish, refuse, bark, sawdust, or other solid wastes into surface waters or at any place where they would contact or where they would be eventually transported to surface waters, including flood plain areas.
The Basin Plan has a narrative objective for floating material, Waters shall not contain floating material, including solids, liquids, foams, and scum, in concentrations that cause nuisance or adversely affect beneficial uses. The Basin Plan has a narrative objective for settleable material, Waters shall not contain substances in concentrations that result in the deposition of material that cause nuisance or adversely affect beneficial uses. |
Objective/Criterion Reference: | San Francisco Bay Basin (Region 2) Water Quality Control Plan (Basin Plan) |
Evaluation Guideline: | If the Rapid Trash Assessment (RTA) Parameter 1 (Level of Trash) is in the poor condition category (scores 0-5), REC2 is not supported. This level of trash distracts the eye on first glance, making the site unsuitable for recreation. The RTA defines poor condition for this parameter as follows, trash distracts the eye on first glance. Stream, bank surfaces, and immediate riparian zone contain substantial levels of litter and debris (>100 pieces). Evidence of site being used frequently by people: many cans, bottles, and food wrappers, blankets, clothing. Regional Water Board staff trained in the RTA inspected the available photographic evidence and applied the assessment method to determine the Level of Trash score.
If the RTA Parameter 3 (Threat to Aquatic Life) is in the poor condition category (scores 0-5), then WILD is not supported. This level of trash is a large amount (>50 pieces) of transportable, persistent, buoyant litter that is detrimental to aquatic life. The RTA defines poor condition for this parameter as follows, large amount (>50 pieces) of transportable, persistent, buoyant litter such as: hard or soft plastics, balloons, Styrofoam, cigarette butts; toxic items such as batteries, lighters, or spray cans; large clumps of yard waste or dumped leaf litter; or large amount (>50 pieces) of settleable glass or metal. Regional Water Board staff trained in the RTA inspected the available photographic evidence and applied the assessment method to determine the Threat to Aquatic Life score. |
Guideline Reference: | A Rapid Trash Assessment Method Applied to Waters of the San Francisco Bay Region:Trash Measurement in Streams |
Spatial Representation: | Photographic evidence was analyzed using the RTA methodology for this waterbody for three different locations spanning dates from 2001 through 2007. |
Temporal Representation: | Photographic evidence was collected for this waterbody on six separate dates from 2001 through 2007. |
Environmental Conditions: | |
QAPP Information: | Assessments of the photographic evidence using the RTA were performed by Regional Water Board staff person who was a co-author of the Rapid Trash Assessment methodology.
Assessments based on photographic evidence were only conducted when sufficient reach-scale and close-up photos were available for a site on a specific date. Photos used for the evaluation needed to be numerous enough and clear enough to document the level of trash at the site in a similar way as the assessor would experience during an actual site visit in the field. For example, at a minimum, one reach-scale photograph (showing at least a 100 linear foot section of the waterbody) and two close-up photographs (of representative trash deposits) were required. |
QAPP Information Reference(s): | |
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LOE ID: | 5668 |
Pollutant: | Trash |
LOE Subgroup: | Pollutant-Nuisance |
Matrix: | Not Specified |
Fraction: | None |
Beneficial Use: | Non-Contact Recreation |
Number of Samples: | 9 |
Number of Exceedances: | 7 |
Data and Information Type: | Occurrence of conditions judged to cause impairment |
Data Used to Assess Water Quality: | Data available consist of photographic evidence of trash and interpretation of these photos by an experienced trash assessment specialist. Each photograph was analyzed to establish the RTA score for the level of trash and threat to aquatic life parameters, which relate to impairment of REC2 and WILD, respectively. Only those photos clear enough to establish these RTA scores were relied on for the listing determination. These results are available for the following dates and locations on Lower San Leandro Creek:
98th Ave. on 4/11/2001, 12/20/2002, 12/10/2003, 12/16/2004, 12/26/2004, 1/5/2005, 1/11/2006, and 2/23/2007 Hegenberger Road on 4/11/2001, and 2/23/2007 Leet Drive on 12/10/2003, and 1/11/2006 This waterbody had level of trash parameter scores in the poor category (indicating impairment of non-contact water recreational beneficial uses) at three locations on four different dates. |
Data Reference: | Report from Roger James and Larry Kolb containing Trash Photos submitted for consideration in 2008 303(d) listing process |
Assessment by Matt Cover of Trash Photos (submitted to Region 2 in response to 2008 Data Solicitation) | |
Archive of Trash Photos for Lower San Leandro Creek submitted for 2008 303(d) list consideration | |
Water Quality Objective/Criterion: | The Basin Plan prohibits discharge of Rubbish, refuse, bark, sawdust, or other solid wastes into surface waters or at any place where they would contact or where they would be eventually transported to surface waters, including flood plain areas.
The Basin Plan has a narrative objective for floating material, Waters shall not contain floating material, including solids, liquids, foams, and scum, in concentrations that cause nuisance or adversely affect beneficial uses. The Basin Plan has a narrative objective for settleable material, Waters shall not contain substances in concentrations that result in the deposition of material that cause nuisance or adversely affect beneficial uses. |
Objective/Criterion Reference: | San Francisco Bay Basin (Region 2) Water Quality Control Plan (Basin Plan) |
Evaluation Guideline: | If the Rapid Trash Assessment (RTA) Parameter 1 (Level of Trash) is in the poor condition category (scores 0-5), REC2 is not supported. This level of trash distracts the eye on first glance, making the site unsuitable for recreation. The RTA defines poor condition for this parameter as follows, trash distracts the eye on first glance. Stream, bank surfaces, and immediate riparian zone contain substantial levels of litter and debris (>100 pieces). Evidence of site being used frequently by people: many cans, bottles, and food wrappers, blankets, clothing. Regional Water Board staff trained in the RTA inspected the available photographic evidence and applied the assessment method to determine the Level of Trash score.
If the RTA Parameter 3 (Threat to Aquatic Life) is in the poor condition category (scores 0-5), then WILD is not supported. This level of trash is a large amount (>50 pieces) of transportable, persistent, buoyant litter that is detrimental to aquatic life. The RTA defines poor condition for this parameter as follows, large amount (>50 pieces) of transportable, persistent, buoyant litter such as: hard or soft plastics, balloons, Styrofoam, cigarette butts; toxic items such as batteries, lighters, or spray cans; large clumps of yard waste or dumped leaf litter; or large amount (>50 pieces) of settleable glass or metal. Regional Water Board staff trained in the RTA inspected the available photographic evidence and applied the assessment method to determine the Threat to Aquatic Life score. |
Guideline Reference: | A Rapid Trash Assessment Method Applied to Waters of the San Francisco Bay Region:Trash Measurement in Streams |
Spatial Representation: | Photographic evidence was analyzed using the RTA methodology for this waterbody for three different locations spanning dates from 2001 through 2007. |
Temporal Representation: | Photographic evidence was collected for this waterbody on six separate dates from 2001 through 2007. |
Environmental Conditions: | |
QAPP Information: | Assessments of the photographic evidence using the RTA were performed by Regional Water Board staff person who was a co-author of the Rapid Trash Assessment methodology.
Assessments based on photographic evidence were only conducted when sufficient reach-scale and close-up photos were available for a site on a specific date. Photos used for the evaluation needed to be numerous enough and clear enough to document the level of trash at the site in a similar way as the assessor would experience during an actual site visit in the field. For example, at a minimum, one reach-scale photograph (showing at least a 100 linear foot section of the waterbody) and two close-up photographs (of representative trash deposits) were required. |
QAPP Information Reference(s): |