Phytoplankton Analysis Services

2026-11-03

1 ) The Contractor will have direct responsibility for the proper identification , enumeration and measurement of all phytoplankton collected as part of the phytoplankton monitoring requirements mandated by Water Right Decision 1641 ( D - 1641 ) and the special studies samples deemed appropriate by DWR . 2 ) The Contractor will receive preserved samples ready for processing that are shipped from DWR , DISE , West Sacramento , California . The Contractor assumes custody and responsibility for the samples when the samples arrive . Samples are preserved with Lugol ’ s solution in 60 - mL bottles . Samples will be returned to their original containers and solution after processing for shipment back to DWR . 3 ) The Contractor is responsible for properly using established procedures and products as described in the Utermöhl microscopic method ( Utermöhl 1958 ) and APHA Standard Methods ( APHA 2012 ) to process , transfer , analyze and preserve the phytoplankton samples obtained from the Department , and for meeting the Health and Safety requirements described in the Material Safety Data Sheets ( MDS ) involved with the process . The Contractor is also responsible for preventing injury to persons and damage to property as a result of using these procedures and will be responsible for the consequences of the improper use of these procedures . 4 ) The Contractor will provide a detailed chain of custody for each sample . The chain of custody must clearly document every time a sample changes hands , whether for delivery , storage , sorting , and processing . The chain of custody must contain ( at a minimum ) the following information : date , time , person delivering , person receiving , and specific sample information ( station code , date collected ). When a group of samples are delivered or received at the same time , they may all be included on one chain of custody form as long as each sample can be uniquely identified and correlated with the above required information .

California

2026-05-10