!"#$%&"'()*+,$(-.*'"+/(
01,$1",2(
3,''/(45(6%$*&7(89545(
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ctions could include aggressive
measures or low-cost wastewater
ntrols. Regulatory actions may
ments and development of water
California Department of Toxic
fer Consumer Products regula3) is poised to become a viable
source control. Pesticides will be
ironmental Protection Agency
rnia Department of Pesticide
PAGE 15).
TIER ASSIGNMENTS
TIER 4
HIGH
CONCERN
MANAGEMENT
MONITORING
303(d) listing
No CECs
currently
in this tier
TMDL or alternative
management plan.
Aggressive control actions
for all controllable sources
Studies to support TMDL
or an alternative
management plan
CERN
ern Risk Level includes conequently in the Bay at levels that
lity of a moderate or high level
ildlife, or people. This would
he entire Bay, or any affected Bay
303(d) List of impaired waters
. Listing would include the develimum Daily Load (TMDL) and
or the contaminant, or an alternain lieu of a TMDL that would
t. Implementation actions would
ution prevention and treatment
ontrollable sources including
to the Bay.
TIER 3
Fipronil
MODERATE
CONCERN
Nonylphenol
and nonylphenol
ethoxylates
PBDEs
HBCD
TIER 2
Pyrethroids
LOW
CONCERN
Pharmaceuticals
and personal care
products
lenges
in monitoring and managver-increasing number of new
e that have the potential to cause
impacts, 2) the lack of water
verse effects thresholds to allow
posure levels, and 3) the absence
methods to measure many CECs.
e been classified in the high
this may be partially explained
ality criteria or thresholds for
a lack of tools to evaluate the
nergistic effects of multiple
uently, many CECs fall into the
orresponding to an unknown
.
PFOS
PBDDs and PBDFs
TIER 1
Alternative
flame retardants
POSSIBLE
CONCERN
Pesticides
Plasticizers
Many, many others
TABLE 1
Action plan or strategy
Aggressive pollution
prevention
Low-cost
control actions
Low-cost source
identification and control
Low-level pollution
prevention
Track product use
and market trends
Identify and prioritize
contaminants of
potential concern,
track international efforts
Develop targeted
and non-targeted
analytical methods
Tiered framework for management and monitoring CECs in San Francisco Bay.
Consider including in
Status and Trends
Monitoring
Special studies of fate,
effects, and sources,
pathways, and loadings
Discontinue screening,
or periodically screen in
water, sediment, or biota
Periodic screening
in wastewater effluent
or urban runoff
to track trends
Screening in water,
sediment, biota,
wastewater effluent,
urban runoff
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Region 2 Pesticides Strategy (Urban Creeks Pesticides TMDL)
Action plan:
Municipal Stormwater Permits
((
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