Transcript CLARK COUNTY UTILITIES - Miami Conservancy District

CLARK COUNTY UTILITIES
Storm Water Management PlanEmployee Training
September 2004
SW WWTP Aerial View
Why an Employee training program for
storm water?
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Required by General Permit for Industrial
Stormwater for County’s Southwest WWTP
And Phase 2 NPDES Storm water Permit for
Clark County
Why an Employee training program for
storm water?


Required by General Permit for Industrial
Stormwater for County’s Southwest WWTP
And Phase 2 NPDES Storm water Permit for
Clark County
Why an Industrial Permit for
Stormwater at WWWTP?
If the lift station fails at the oxidation ditch,
the overflow discharges directly to the
creek, triggering need for coverage under
Industrial Permit.
The Feds get involved
In response to the pollution hazards caused by storm water runoff, the Environmental Protection
Agency passed Phase II of the federal Clean Water Act. To comply with this regulation, the Board
of Miami County Commissioners and other political subdivisions have coordinated efforts to
develop Storm water Management Programs so that pollution caused by runoff in Miami County
can be minimized as much as possible.
The Storm Water Management Program consists of the following six components, which are
targeted for implementation by the end of 2007:
1.
Public Education/Outreach on Storm Water Impacts
2.
Public Involvement/Participation
3.
Illicit Discharge Detection & Elimination
4.
Construction Site Storm Water Runoff Control
5.
Post-Construction Storm Water Management
6.
Pollution Prevention/Good Housekeeping
for Municipal Operations
Where does storm water runoff go?
Residential
Development
Commercial
Development
Water Treatment Plant
What is a watershed?
A watershed is all the land area that drains to a given body of water.
WE ALL LIVE IN A WATERSHED
CCUD Stormwater Permit
timetable:
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Permit issued March 2003
Required Stormwater Management Plan
by March 2004
Permit requires full implementation of
Plan by September 2004 (including
employee training program)
Employee Training Modules:
1. Awareness level – what is
stormwater pollution? What are the
causes? Why is it important to address
it?
2. Detailed training required to
implement WWTP stormwater plan.
What does the Employee Need to Know
for Industrial Permit?
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Overview of permit
Goals of Stormwater Management Plan
Pollution Prevention (P2)/ Good
Housekeeping
Preventive Maintenance practices
Spill Prevention and Response
What Does Employee Need to Know
Cont’d
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How to conduct inspections
Performing inspection follow-up
Reporting and recordkeeping
Procedures, Maintenance and Inspection of
site specific areas
A Guide to Understanding Storm Water Runoff
So what’s the big deal?
As storm water flows over driveways, lawns, and sidewalks, it picks up debris, chemicals,
dirt, and other pollutants, and empties into a storm water collection system.
Anything that enters a storm water collection system is discharged untreated into the
lakes and rivers we use for swimming, fishing, and providing drinking water.
Now that point-source pollution has been
remediated, polluted runoff currently
ranks as one of the nation’s greatest
threats to clean water.
What’s in the SWMP?
1.Identify team and responsibilities
2.Description of potential pollution sources
which could contaminate storm water.
What’s in a SWMP?
3. A Site Map showing:
-outline of drainage area for each outfall
-existing structural control measures
-surface water
-locations where significant materials are
exposed to precipitation
-locations where major spills occurred
SITE MAP CONTD:
Locations of these activities which are exposed to
precipitation:
fueling stations, vehicle and equipment
maintenance or cleaning, loading/unloading, locations for
treatment, storage or disposal of wastes, liquid storage
tanks, processing and storage areas
A flow direction and types of pollutants that could
contaminate runoff.
What’s in a SWMP?
4. Inventory of materials that potentially
could be exposed to precipitation.
Include where materials were handled,
treated, stored, or disposed that were
exposed to storm water in last 3 years.
What’s in a SWMP?
5. List of significant spills and leaks of
toxic or hazardous pollutants in last 3
years.
What’s in a SWMP?
6. Risk identification and narrative –
show inventory of materials with potential
to contaminate storm water.
What’s in a SWMP?
7. Measures and Controls
Good Housekeeping – maintain clean,
orderly facility
Preventive Maintenance – inspection
and maintenance of storm water devices,
inspecting and testing equipment and
systems, perform proper maintenance
So what can Average Joe Employee do?
If each of us does our small part in preventing storm water pollution, the results
will be significant. There’s a part we can play in each of the following areas:
Household Waste Disposal
Lawn Care
Auto Care
Water Conservation
Measures and Controls
Contd:
Spill Prevention and Response –
identify areas where spills can occur, list
material handling procedures, storage
requirements, procedures for cleaning up
spills, have necessary equipment for
clean up.
Measures and Controls
Contd:
Inspections -inspect designated
equipment and areas at appropriate
intervals. Must have tracking systems
and follow up on items found in
inspections, must keep records
Measures and Controls
Contd:
Employee Training – inform employees of
responsibilities and goals of plan, provide
training on spill response, good housekeeping,
materials management, specify periodic dates.
Contractor Training – not required but is
advisable
Recordkeeping and Internal Reporting –
keep records of spills, other discharges,
inspections and maintenance.
Measures and Controls
Contd:
Plan must include certification that the
facility was evaluated for non-storm water
discharges.
List any non-storm water sources and
identify pollution prevention practices.
8. Perform a Comprehensive
Site Evaluation
Conduct at least yearly
Visually inspect material handling areas for
potential sources of pollution
Observe catch basins, swales
Visual inspection of equipment needed to
implement the plan.
Perform a Comprehensive
Site Evaluation Contd:
Make any necessary revisions to plan within 2
weeks following the site evaluation
Timely implement any changes needed, but no
later than 12 weeks after site evaluation.
Prepare summary report of site evaluation with
signature.
Insecticides, pesticides, paint, solvents, used motor oil and other auto fluids can
poison aquatic life. Land animals and people can become sick from eating diseased
fish or ingesting polluted water.
9. Records Retention
Retain plan for life of permit
Keep reports and records for minimum 6
years.
10. Plan Updates
Plan must be updated for any change in
design, construction, operation or
maintenance which has significant effect
on, or the potential for discharge of
pollutants in storm water, of if the plan is
ineffective in minimizing storm water
pollutants
11. Duty to Comply
Permittee (the County) must implement the
measures in the Plan
Permittee must comply with all conditions of the
Permit.
Duty to take action to minimize effects of a spill
or accident (duty to mitigate)
Duty to Comply Contd:
Duty to provide information to Ohio EPA if
requested
Duty to perform proper operation and
maintenance
If left uncontrolled, these pollutants can:
PROPER MATERIALS
INVENTORY
 OBJECTIVE: To identify all significant
materials which may be exposed to
precipitation.
PROPER MATERIALS
INVENTORY
Significant materials means process
chemicals, raw materials, fuels,
pesticides, or other toxic materials.
PROPER MATERIALS
INVENTORY CONTD:
SW WWTP sources include:
Raw or partially treated wastewater
Biosolids
Chlorine
Diesel fuel
Used motor oil and antifreeze
Hydrofluoric acid
Hydrogen peroxide
PROPER MATERIALS
INVENTORY CONTD:
Materials inventory is an ongoing
process
Records must be continually updated
Steps to conduct Materials
Inventory:
Identify all chemical substances in the
workplace
Walk through the plant
Steps to Conduct Materials
Inventory
Review purchase orders from previous
year
Compile MSDS for each chemical
Steps to Conduct Materials
Inventory
Label all containers to show name and type of
substance, stock number, expiration date,
health hazards, handling instructions. (Much of
this was done for the Hazard Communication
Plan)
Clearly mark on the inventory which hazardous
materials require special handling, storage or
disposal techniques.
Using the Materials Inventory
Identify which items were exposed to
precipitation in the last 3 years
Identify steps that can be taken to
eliminate possible exposure to storm
water
PREVENTIVE MAINTENANCE =
A BEST MANAGEMENT PRACTICE
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The Great Miami River Watershed
Possible pollutants in storm water:
VISUAL INSPECTION
Visual inspection is a Best Management
Practice (BMP )which may identify a
variety of problems.
Used to:
 Look at runoff for signs of contamination
 Look at outfalls in dry weather for signs of
contamination .
 Look at storage areas for leaks or stains
VISUAL INSPECTION
Wet weather inspections should be conducted
during the first hour of a storm event. Look for
presence of:
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Floating or suspended material
Oil and grease
Discoloration
Turbidity
Foam
Odor
Visual Inspections
Dry weather inspections of outfalls:
 Look for stains, sludge, odor or abnormal
conditions
Inspection frequency should be done
monthly, and cover both wet and dry
conditions.
Visual Inspections
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Visual inspection of storage and processing
areas in the plant, focus on:
Storage areas
Loading and unloading areas
Pipes, pumps, valves, fittings
Tanks – look for signs of corrosion inside and
outside tanks Inspect foundation for
deterioration
Containment areas
Shipping containers
Visual Inspections
In process areas look for:
 Leaks, seepage
 Overflows from treatment tanks
 Overflows, spillage from digesters, drying
beds
Visual Inspections
In outfall, look for:
 Odor of oil, gasoline, solvent, decomposing
wastes
 Color,
 Turbidity
 Deposits and stains
 Vegetation – increased growth or inhibited
growth
 Structural damage to an outfall
Visual Inspections
Recordkeeping
Record names of inspectors, date,
observations – see form
How groundcover affects the amount of storm water runoff
40% evaporation
30% evaporation
55%
runoff
10%
runoff
25% shallow
infiltration
10% shallow
infiltration
25% deep
infiltration
Natural Ground Cover
5% deep
infiltration
75% - 100% Impervious Cover
INSPECTIONS FOR NON-STORM WATER
DISCHARGES TO STORM SEWERS
PURPOSE: to determine if there are any
non-storm water discharges to storm
sewers
Inspections for Nonstorm water discharges
Sources of non-storm water discharges
may include:
 dry weather discharges occurring in warm
months and in cold months, and during
snowmelts.
Inspectors may find illicit point source
outfalls that do not carry storm water.
Auto Care
Wash your car at a commercial car wash that treats its wastewater, or wash your
vehicle on your yard so the water infiltrates into the ground rather than entering the
storm drain .
Repair leaks promptly and dispose of used auto fluids and batteries at designated
drop-off or recycling locations.
Inspections for Non-storm
water discharges
Inspection methods:
Perform visual inspection
 observe all discharge points during dry weather
 look for stains, smudges, odors, other abnormal conditions
Review maps of sanitary sewers and storm sewers
Perform dye testing, input dye in sanitary sewer, look for dye tracing
in storm outfall
Sampling and chemical analysis is not required by SW WWTP permit
Inspections for Non-storm
water discharges
At least annually, inspect for non-storm
water discharges
And, after any building addition
And, after any plant changes
Test Your
H2O
Knowledge
How many gallons of river water can be polluted
by one quart of motor oil?
2,500 gallons of water can
be contaminated by a
single quart of oil.
PREVENTIVE MAINTENANCE
(PM)
Preventive Maintenance is a Best
Management Practice (BMP)
PM involves the regular inspection,
testing, and replacement or repair of
equipment and operational systems.
PREVENTIVE
MAINTENANCE
A PM program can prevent breakdowns and
failures through adjustments, repairs or
replacement of equipment before a major
failure occurs.
PM includes maintenance on storm water
catch basins, and spill containment areas, as
well as maintenance on equipment in the
WWTP.
PREVENTIVE
MAINTENANCE
Purpose of PM is to prevent problems
before they occur.
Prevent spills and leaks.
BEST MANAGEMENT PRACTICES
• Good Housekeeping
• Proper Storage and Disposal
• Vehicle and Equipment Maintenance
and Washing
• Spill Containment and Emergency
Response
• Employee Education and Training
PREVENTIVE
MAINTENANCE
Cost savings may result from PM due to
avoiding costs of a system breakdown
Reduce chance of having to pay a high clean
up bill from a spill
Limitations: cost, trained staff, management
direction
Key elements of PM:
Identify equip or systems that may malfunction
and cause spill or contamination (Examples:
pipes, pumps, storage tanks, process
equipment, storm water control facilities.)
Establish schedules and procedures for routine
inspections
Periodic testing of plant equip
Key elements of PM
Contd:
Prompt repair and replacement of defective
equip
Spare parts inventory
Organized recordkeeping
Commitment to inspections, recordkeeping,
and follow up.
SW WWTP Aerial View
PREVENTIVE MAINTENANCE
IMPLEMENTATION
Continual updating of records
Commitment to inspections
Staff input and feedback
Annual review of records
Insecticides, pesticides, paint, solvents, used motor oil and other auto fluids can
poison aquatic life. Land animals and people can become sick from eating diseased
fish or ingesting polluted water.
P2/Good Housekeeping for Public
Sector Operations
Maintain a neat and orderly workplace
Sweep up spills as they happen
Perform vehicle maintenance with
pollution prevention in mind
P2/Good Housekeeping
Pick up debris and dispose of properly
Recycle or properly dispose of used oils,
chemicals, etc.
Practice pollution prevention in lawn carekeep grass clippings out of waterways
Where does storm water runoff go?
Residential
Development
Commercial
Development
Water Treatment Plant
SPILL RESPONSE AND
PREVENTION PLAN
(SRPP)
OBJECTIVE: to develop a Spill Response and
Prevention Plan and to train employees to:
1) proactively take steps to prevent spills to the
storm sewer system:
2) quickly respond to spill events in order to
minimize potential damage to the
environment.
SPILL RESPONSE AND
PREVENTION PLAN KEY
COMPONENTS
 Instructions for spill clean up
 Standardized procedures for materials
handling
 Evaluation of past spills for methods of
prevention
 Employee training
SPILL RESPONSE AND
PREVENTION PLAN
 Before developing a Spill Response and
Prevention Plan:
 Conduct materials inventory
 Evaluate past spills – what caused the
spill?
 Identify non-storm water discharges
 Summarize findings
SPILL RESPONSE
PROCEDURES
- - - - - OVERVIEW - - - - - - - -  Stop the source of the spill
 Contain the spill
 Clean up the spill
 Properly dispose of contaminated
materials
 Conduct training to prevent and control
future spills
No man is an island…
What happens at our location in the watershed, either positive or negative, has a
ripple effect on those who live “downstream” from us in the watershed.
SPILL RESPONSE, step by
step:
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Is an employee in immediate danger of
severe bodily injury?
Leave the site and call Supervisor
immediately!!
Stop the source of the spill.
If you can’t do this by yourself, call
Supervisor immediately!!
SPILL RESPONSE, step by
step:
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How large is the spill?
If you believe the spill may leave the
plant site, call Supervisor immediately!!
Stop the source of the spill, and call the
Supervisor.
Contain the spill:
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Place barriers at drains and at doorways
If the spill escapes, place barriers at the
next control point downstream
SW WWTP Aerial View
SPILL RESPONSE, step by
step:
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Assess severity of spill
a.
b.
Did spill reach the plant sewer system?
Could the spilled material harm the WWTP treatment
processes?
Is it necessary to shut off the influent screw pumps to
protect the WWTP?
Are the barriers effective in containing the spill? If
not, move downstream to place new barriers.
Determine what materials or methods should be
used for clean up.
Determine if you will need the Vactor truck.
c.
d.
e.
f.
SPILL RESPONSE, step by
step:
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Clean up the spill
For dry chemicals, use brooms, shovel, sweeper or plow
For liquid spills:
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Shop Vac
Vactor truck
Sorbents – used to immobilize materials
Gels- interact with spill liquid to concentrate and congeal the
substance
Foams – used to control rate of evaporation
Do not use emulsifiers or dispersants
Have small bags of absorbent in fueling areas with small drums for
storage
Absorbents should be swept up, not washed down drains
Keep emergency containment and clean up kits available
SPILL RESPONSE, step by
step:
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Properly dispose of contaminated
materials
Fill out reports
SPILL RESPONSE, step by
step:
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Post Incident Steps
Investigate
Evaluate
Consider preventive measures
Modify Spill Plan if necessary
Replace inventory of sorbents, gels, etc if necessary
Incorporate lessons learned into Employee Training
Update Plan when a new chemical is introduced or
plant modifications warrant an update.
What is Storm Water Runoff?
Storm water runoff occurs when precipitation from rain or snowmelt flows over
the ground. Impervious surfaces like driveways, sidewalks, and streets can
prevent storm water from naturally soaking into the ground. Consequently, the
water “runs off” into a catch basin, a side ditch, or some other storm water
collection system that transports the water directly to a river or lake.
Preventing a spill is much less trouble
than dealing with a spill!!
SPILL PREVENTION PLAN
Plan Contents:
 Description of facility and list of chemicals
used
 Site plan showing:
 storm drains, outfalls, collection basins
 spill prevention devices,
 swales, adjacent water bodies
 locations of processing areas
 areas with spill potential
SPILL PREVENTION PLAN
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Notification procedures
List key personnel and phone numbers
Clean up procedures
List of designated employees with
specific responsibilities
REMEMBER –
A forgotten spill in dry weather
contributes to polluted runoff
when it rains.
And, most importantly…
Use our recreational water resources (fish, canoe, hike, camp, etc.)
Summary of Steps to
Evaluate for Prevention
Potential
 Evaluate possibilities for spill prevention
 Consider using chemicals that are nontoxic or less
hazardous
 Consider containment dikes or other secondary
containment structures
 Consider curbs around small areas with spill potential
 Consider isolation valve in Catch Basin next to
oxidation ditch
 Consider isolation valve in plant storm sewer upstream
of plant influent
 Consider spill curtains around digester tanks
SPILL PREVENTION PLAN
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List objectives for employee training
and refresher training
Summary of the plan to post in Admin
building and in each area with high spill
potential
Update the plan when a new chemical
is introduced or plant modifications
warrant an update.
SW WWTP Aerial View