Stormwater (R.Debrito) - SFI Environmental Login

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22 Φεβ 2014 (πριν από 3 χρόνια και 6 μήνες)

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Stormwater

Stormwater


Industry a potential
source of pollution


Most remediation is
simple structuring


Training is critical


Chemical treatment
should be last resort

What are we testing for ?

Called Parameters:


BOD


TSS


TDS


pH


Fecal


Turbidity


Need to be equal or
better than the limits set
by State and Federal
Guidelines


Impaired Waterways
often mean stricter
limitations


Stormwater Pollution
Plans help to ensure
practices that will not
harm waters


Vocabulary of parameters


BOD
-

biological oxygen
demand


-
oxygen demand of
aerobic bacteria to digest
organic waste


7 days to complete test


Raw sewage (200
-
600 mg/l)

Impaired stream (2
-
8 mg/l)


High BOD




means lots
of organic waste in water
and ultimately robs other
aquatic life forms

Low BOD


healthier less
organic waste for
digestion


Fecal Coliform


bacteria found in solid
digestion waste

Sources
-

human, animal ,
avian and pulp/plant
waste

Presence or Absence based
on 100 ml samples/ 24hr


Presence

-

failure of
stormwater permits in
many areas. Can cause
typhoid fever, Hepatitis
A, dysentery and other
gastroenterological fun


Absence

-

Healthy water

Vocabulary of parameters

Vocabulary of Parameters


TSS
-

Total Suspended Solids


Solids in the water that do not
settle, partly TDS.

Several hours test


Measured in mg/l and levels of
acceptable varies waterway to
waterway




High




waterways are not
being kept to optimal,
allowing sediments to be
swept by water to waterway,
creating silts and other flow
inhibition.


Low

-

stormwater ways are
maintained less likely to
transport sediment

Vocabulary of Parameter



Turbidity
-

the
cloudiness or haziness
of a liquid


Usually caused by
phytoplankton or
sediments


Higher is not better,
often slowing water
flow helps reduce
turbidity


Vocabulary of Parameter


Total Dissolved Solids


the amount of inorganic
and organic materials in
water


More is worse on wildlife

Vocabulary of Parameters


pH


a measurement of
Hydrogen from 1
-
14
most water should be 6
-
8


Water hardness can be
affected by pH





High pH (basic)


toxic
to the aquatic life above
8


Low pH (acidic)
-

Toxic
to aquatic life below 6,
supports more pathogens
than high pH





Geography of recharge

Water run off


3 inches of precipitation

Stormwater Plans

Contain plans for :


Testing


Monitoring




Actions to protect



Best Management
Practices


Descriptions of site


Potential sources




Training of personnel
onsite is required


Stormwater permit
included or non
-
source
certification


Update, Update, Update!


Testing & Monitoring

Which Parameters


state dependent! Depends location
and water resources near facility

Time table
-

can be tricky, put them on a calendar; well
ahead of schedule

Reporting requirements
-

keep for inspections or submit to
state

Laboratory requirements
-

only use certified labs

Inspections
-

cover all areas of facility, the roofing down.



Containment walls


Vegetative Swales


Outfall valves


Spill Kits


Outfall diversions


Stormwater ponds


Trench drain to process


Sediment fencing


Training with real spill


Learning to dyke and
dam to protect drop
inlets


Spill equipment
inventory and tour of
locations

Actions & Best Management Practices

Sedimentation stoppers


Erosion control with hay bales

http://
youtu.be/S3FAT
l_DcoE

Training
-

get back to nature, play a little

Show the bad too

Questions ?