This is an update to the previous post concerning external lab surface water and groundwater nutrient data.
Currently, sub-samples for nutrient analysis are being frozen and stored for future analysis with lower MDLs. The newly contracted external laboratory will begin receiving samples June 14, 2021 and all stored samples will be shipped by December 31, 2021. Data will be published approximately 90 days following sample receipt. The MDLs for the newly contracted laboratory will be uploaded alongside the first set of data returns and published in the swc_externalLabSummaryData table.
This delay impacts the following analytes:
- nitrate plus nitrite as nitrogen (NO3+NO2 – N)
- nitrite as nitrogen (NO2 - N)
- ammonium as nitrogen (NH4 - N)
- orthophosphate (Ortho - P)
- total phosphorus (TP)
- total dissolved phosphorus (TDP)
Total dissolved nitrogen (TDN) and total nitrogen (TN) are not impacted by this delay and will be analyzed and published as expected.
Users should refer to the swc_externalLabSummaryData table, which is part of the expanded package for both Chemical properties of surface water (DP1.20093.001) and Chemical properties of groundwater (DP1.20092.001), for details of laboratory method detection limits associated with date ranges for previously analyzed data.
Please use the Contact Form for further inquiries; please select DP1.20093.001 (for surface water) or DP1.20092.001 (for groundwater) in the Data Product drop-down list and include the term "RITM0030592" in the body of your request.