Susan Buckley, RN, Director, Public Health
Ira Singh, MPH, Deputy Director
Donald I. Baird, MD, Health Officer

100 H Street, Suite 100
Eureka, CA 95501
(707) 445-6215
(707) 441-5699 FAX

Division of Environmental Health
Ocean Monitoring Program

NO HUMBOLDT COUNTY BEACHES ARE CURRENTLY POSTED.

For all samples below, units are in are in MPN/100 ml. MPN = "most probable number"
Clam Beach Co. Park 4/15/2014 <10 No <10 No <10 No
Luffenholtz Creek 4/15/2014 10 No <10 No 10 No
Mad River Mouth / North 4/15/2014 262 No 20 No <10 No
Moonstone Beach 4/15/2014 199 No 20 No <10 No
Trinidad State Park / Mill Creek 4/15/2014 31 No <10 No <10 No
State Water Quality Standards for bacteria that are not to be exceeded in recreational waters are:

Total Coliform = 10,000 MPN/100ml

Fecal Coliform (as Escherichia coli) = 400 MPN/100 ml

Enterococcus (E. faecalis) = 104 MPN/100 ml

*Fecal Coliform to Total Coliform ratio exceeds 0.1, and the Total Coliform count exceeds 1,000 MPN



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