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Regional Monitoring Program 1997 Annual Report
Chapter 3.
Figure 3.36.
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Figure 3.36.
Dissolved chlorpyrifos concentrations in water (ppq) at 16 RMP stations sampled in January, April, and August 1997. = not analyzed, = below detection, and Q = outside the QA limit. Concentrations ranged from below detection to 900 ppq (see Appendix B for MDLs). The highest concentration was sampled at Sacramento River (BG20) in April. Average concentrations were highest (595 ppq) in the Southern Sloughs in August and lowest (54 ppq) in the Southern Sloughs in January. There are no water quality criteria for dissolved chlorpyrifos.
 
San Francisco Estuary Institute