Mercury speciation and other constituent data for surface sediment and water associated with the South San Francisco Bay Salt Pond Restoration, 2010-18

Dates

Publication Date: 2019-05-06
Start Date: 2010-04-07
End Date: 2018-02-13

Citation

Marvin-DiPasquale, M.C., Agee, J.L., Arias, M.R., Kakouros, E, and Kieu, L.H., 2019, Mercury speciation and other constituent data for surface sediment and water associated with the South San Francisco Bay Salt Pond Restoration, 2010-18, U.S. Geological Survey data release, https://doi.org/10.5066/P9MERSKP.

Summary

This dataset includes mercury and other constituent concentration and physical properties data for surface sediment, pore water and surface water collected as part of the South San Francisco Bay Salt Pond Restoration Phase 1 (2010 to 2018) studies. The overarching focus of these studies was to monitor mercury (Hg) biogeochemistry in both sediment and water in response to management actions associated with the conversion of former salt producing ponds to contemporary wetland habitat. The two primary management actions included the breaching of Pond A6 during December 2010, and the construction and operation of an adjustable tidal control structure (TCS) associated with the Pond A5/A7/A8 Complex beginning in June 2011. The TSC that reconnects [...]

Summary

This dataset includes mercury and other constituent concentration and physical properties data for surface sediment, pore water and surface water collected as part of the South San Francisco Bay Salt Pond Restoration Phase 1 (2010 to 2018) studies. The overarching focus of these studies was to monitor mercury (Hg) biogeochemistry in both sediment and water in response to management actions associated with the conversion of former salt producing ponds to contemporary wetland habitat. The two primary management actions included the breaching of Pond A6 during December 2010, and the construction and operation of an adjustable tidal control structure (TCS) associated with the Pond A5/A7/A8 Complex beginning in June 2011. The TSC that reconnects the Complex to Alviso Slough (specifically referred to as the A8-TCS), a historically Hg contaminated waterway that represents the terminus of watershed drainage that includes the New Almaden mercury mining district. The A8-TCS consists of eight gates, each five feet wide. During the initial testing period (starting in June 2011) only one gate was opened, and the structure was closed again during the winter-spring months (from December until the following June). Over the subsequent seven years, the number of gates open was increased to three (15 feet, June 2012), to five (25 feet, September 2014), and eventually to all eight (40 feet, June 2017). Beginning in 2014 the A8-TCS was opened year-round. Field sampling occurred in both ponds and sloughs. In addition to sampling within the Complex ponds, two control ponds (A3N and A16) were also sampled. Similarly, in addition to sampling within Alviso Slough, two nearby control sloughs (Mallard Slough a.k.a Artesian Slough and Guadalupe Slough) were sampled (beginning in 2014 for Guadalupe Slough). Sediment sampling was conducted for the period of May 2010 through August 2011, which represents the period immediately prior to and immediately after the two above mentioned management actions. Additional sediment sampling was conducted in Mallard Slough exclusively during the August- September period 2011-2013, 2015, and 2017. Surface water sampling was conducted during three periods. The first period was in conjunction with the sediment sampling (May 2010 through August 2011). The second period involved a unique series of high temporal resolution sampling events conducted at a single site in mid-Alviso Slough, when water samples were collected hourly over a 25-hour period to capture the Hg dynamics associated with two full tidal cycles. A total of five such high-resolution ‘diel’ sampling events were conducted between May 2012 and February 2013, which included each of the four seasons and the annual ‘first flush’ event associated with the initiation of the 2012-13 rainy season. The third period, from February 2014 through February 2018, represents when all ponds and sloughs were again sampled (akin to the first period). This third period also represents when the A8-TCS was sequentially opened from 15 feet (3 gates open) to 40 feet (all 8 gates open), and when the A8-TCS management transitioned from being closed during the winter months to being opened year-round, beginning in 2014. This data release includes five data tables given both as Excel (*.xlxs) and machine readable 'comma-separated values' format (*.csv): 1) ‘SBSP.Data.Dictionary_2010-18’, the Data Dictionary, which provides definitions and details related to the other four data tables and includes analytical methods citations; 2) ‘SBSP.SED_2010-17’, the surface sediment analytical dataset; 3) ‘SBSP.SW_2010-18’, the primary surface water analytical dataset; 4) ‘SBSP.SW_Diel_2012-13’, the surface water diel sampling dataset; 5) ‘SBSP.QA_2010-18’, quality assurance data summary for the sediment and water datasets.

Contacts

Point of Contact :: Mark C Marvin-DiPasquale
Originator :: Mark C Marvin-DiPasquale, Jennifer L Agee, Michelle R Arias, Evangelos Kakouros, Le Kieu
Metadata Contact :: Jennifer L Agee
Publisher :: U.S. Geological Survey
Distributor :: U.S. Geological Survey - ScienceBase
USGS Mission Area :: Environmental Health
SDC Data Owner :: Earth System Processes Division

Attached Files

sorting

Metadata First

Recent First

Alphabetical

Click on title to download individual files attached to this item.

c9fb5c5b-e7b3-4a6a-86a7-9c15a49be95e.xml Original FGDC Metadata	View	15.38 KB	application/fgdc+xml
P6280037.JPG		1.07 MB	image/jpeg
SBSP_Surface Water Sites_2010-18.kml		11.02 KB	application/vnd.google-earth.kml+xml
SBSP_Sediment Sites_2010-17.kml		14.98 KB	application/vnd.google-earth.kml+xml
T1_SBSP. Data.Dictionary.csv		91.71 KB	text/csv
T1_SBSP. Data.Dictionary.xlsx		62.04 KB	application/vnd.openxmlformats-officedocument.spreadsheetml.sheet
T2_SBSP.SED_2010-17.csv		60.6 KB	text/csv
T2_SBSP.SED_2010-17.xlsx		81.76 KB	application/vnd.openxmlformats-officedocument.spreadsheetml.sheet
T3_SBSP.SW_2010-18.csv		164.87 KB	text/csv
T3_SBSP.SW_2010-18.xlsx		196.46 KB	application/vnd.openxmlformats-officedocument.spreadsheetml.sheet
T4_SBSP.SW_Diel_2012-13.csv		39.98 KB	text/csv
T4_SBSP.SW_Diel_2012-13.xlsx		56.42 KB	application/vnd.openxmlformats-officedocument.spreadsheetml.sheet
T5_SBSP.QA_2010-18.csv		6.65 KB	text/csv
T5_SBSP.QA_2010-18.xlsx		18.08 KB	application/vnd.openxmlformats-officedocument.spreadsheetml.sheet

Related External Resources

Type: Related Primary Publication

Marvin-DiPasquale, M., Slotton, D., Ackerman, J.T., Downing-Kunz, M.A., Jaffe, B.E., Foxgrover, A.C., Achete, F., and van der Wegen, M., 2023, South San Francisco Bay Salt Pond Restoration Project—A synthesis of Phase-1 mercury studies: U.S. Geological Survey Scientific Investigations Report, https://doi.org/10.3133/sir20225113.	https://doi.org/10.3133/sir20225113

Type: Citation

Foxgrover, A.C., Finlayson, D.P., Jaffe, B.E., and Fregoso, T.A., 2011, Bathymetry and Digital Elevation Models of Coyote Creek and Alviso Slough, South San Francisco Bay, California (ver. 3, September, 2015): U.S. Geological Survey Open-File Report 2011-1315, 23 p., http://dx.doi.org/10.3133/ofr20111315.	http://dx.doi.org/10.3133/ofr20111315
Marvin-DiPasquale, M. and M. H. Cox (2007). Legacy Mercury in Alviso Slough, South San Francisco Bay, California: Concentration, Speciation and Mobility U.S. Geological Survey: Open-File Report number 2007-1240, 98 p., https://pubs.usgs.gov/of/2007/1240/.	https://pubs.usgs.gov/of/2007/1240/

Purpose

The South Bay Salt Ponds Restoration Project (SBSPRP) is a long-term (50 year time-frame) wetland restoration effort located in multiple regions around the bay-land interface of South San Francisco Bay (SFB), focused on converting over 15,100 acres of former industrial salt production ponds into a mosaic of tidally flushed wetland habitat and deeper managed ponds, for wildlife habitat and flood control (www.southbayrestoration.org). One of the three main restoration areas, the ‘Alviso Complex’ in the extreme southern portion of the South Bay, is notable in that it also represents one of the most mercury (Hg) contaminated regions within the SFB. A primary freshwater input to the Alviso Complex is Alviso Slough, which is the terminus of an upper watershed drainage area that includes the largest historic mercury mining district in North America (the New Almaden mining area). Thus, Alviso Slough and the surrounding former salt production ponds contain legacy Hg contamination, which may be remobilized as a result of changing hydrodynamics in the region due to SBSPRP management actions. The 2010-2018 surface sediment and surface water data presented here was collected to assess how specific management actions affected Hg concentrations, speciation, mobilization, and bioaccumulation in Alviso Slough and in the A5/A7/A8 Pond Complex.

Mercury speciation and other constituent data for surface sediment and water associated with the South San Francisco Bay Salt Pond Restoration, 2010-18

Dates

Citation

Summary

Summary

Contacts

Attached Files

sorting

Metadata First

Recent First

Alphabetical

Purpose

Preview Image

Map

Communities

Associated Items

Tags

Provenance

Additional Information

Identifiers

Item Actions

View Item as ...

Save Item as ...

View Item...

Dates

Citation

Summary

Summary

Contacts

Attached Files sorting Metadata First Recent First Alphabetical

Related External Resources

Purpose

Preview Image

Map

Communities

Associated Items

Tags

Provenance

Additional Information

Identifiers

Item Actions

View Item as ...

Save Item as ...

View Item...

Attached Files

sorting

Metadata First

Recent First

Alphabetical