Transcript Mod22-C Applications of Water Quality Regulations

APPLICATIONS OF WATER
QUALITY REGULATIONS
Module 22, part c – Applications
Objectives
Students will be able to:
 evaluate examples of land alternations to determine
necessary permits based on current regulations.
 describe the major aspects of the Storm Water
Pollution Prevention Plan.
 Evaluate measures used for development on wetland
areas.
 describe the roles of the Army Corps of Engineers and
the EPA in managing Section 404.
 define source water.
 describe methods used to assess source water.
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Applications of water quality regulations
 Construction site
 NPDES (section
Desotelle Consulting Plc
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Desotelle Consulting PLC
402) Program
(regulation)
 Wetland alteration
 Sections 401 and
404 (regulation)
 Source Water
Assessment
 State revolving loan
program (incentive)
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MN Erosion Control Assoc.
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Construction site
 A construction
contractor has
just won a bid to
build 16 homes on
a 160-acre parcel.
 Under the Clean
Water Act, what
permit(s) do you
need?
•CR Planning, Inc.
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NPDES Construction General Permit (CGP)
 Does your construction
project disturb one or
more acres of land?
 If yes, you will need to
submit an application
called a Notice of Intent
(NOI).
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Stormwater Pollution Prevent Plan (SWPPP)
 You are required to develop and implement a
SWPPP and maintain all best management
practices (BMPs) during each stage of the
project.
 BMPs are the techniques (buffers, silt fences,
detention ponds, swales, etc.), schedules of
activities, prohibitions of practices, and
maintenance procedures to prevent or reduce
the discharge of pollutants.
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SWPPP components
1. Minimize area to be
2.
3.
4.
5.
disturbed
Protect waterways
and stabilize
drainageways
Phase construction
activities
Stabilize exposed
soils immediately
Avoid steep slopes
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MN Erosion Control Assoc.
MN Erosion Control Assoc.
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Basic SWPPP principles
 Divert stormwater away
from disturbed areas.
 Install BMPs to
 control erosion and
sediment
 manage stormwater
 Inspect the site regularly
 Revise the SWPPP as
conditions change
 Minimize exposure of
bare soils
 Keep the construction
site clean
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MN Erosion Control Assoc.
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Follow SWPPP until project complete
 Inspect and maintain
BMPs regularly.
 Keep records of your
maintenance activities
and any modifications
for review during
inspection.
 File an electronic
Notice of Termination
when project is
complete.
MN Erosion Control Assoc.
MN Erosion Control Assoc.
MN Erosion Control Assoc.
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Doing it right vs doing it wrong!
MN Erosion Control Assoc.
MN Erosion Control Assoc.
MN Erosion Control Assoc.
MN Erosion Control Assoc.
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Doing it right vs doing it wrong!
MN Erosion Control Assoc.
MN Erosion Control Assoc.
MN Erosion Control Assoc.
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MN Erosion Control Assoc.
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Write a NOI for the site
 Fill out a NOI by
creating a scenario
based on this diagram.
 Notice the detail
needed, and this does
not include writing a
SWPPP.
•CR Planning, Inc.
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NOI Form
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Wetland alteration
Site to be
developed
Site with
wetlands
delineated
Desotelle Consulting Plc
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Corps of engineers jurisdiction
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Avoidance
 Avoid adverse impacts
 Are there practicable
alternatives?
 Avoiding wetlands may limit
number of lots or the lot size
Desotelle Consulting Plc
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Minimization
 If impacts cannot be avoided,
appropriate and practicable
steps to minimize adverse
impacts must be taken.
 How can you minimized
impacts?
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Compensation
compensatory mitigation is
required for unavoidable
adverse impacts which
remain.
 How much area is impacted?
 Develop restoration plan for
areas filled.
 mitigation Area
 fill locations
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 Appropriate and practicable
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Section 404 permit authority
 Army Corps of Engineers
 administers the day-to-day program, including individual permit
decisions and jurisdictional determinations.
 develops policy and guidance.
 enforces Section 404 provisions.
 Environmental Protection Agency
 develops and interprets environmental criteria used in evaluating
permit applications.
 determines scope of geographic jurisdiction.
 approves and oversees State administered programs.
 identifies activities that are exempt.
 reviews/comments on individual permit applications.
 has authority to veto the Corps' permit decisions (Section 404[c]).
 can elevate specific cases (Section 404[q]).
 enforces Section 404 provisions.
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What about section 401?
 Does water quality certification (section 401)
add another layer of bureaucracy or cause
delays?
 It shouldn't.
 Allows states to take
a more active role in
wetland decisions.
Courtesy of Dane County, WI
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Source Water Assessment
Well distance
potential
from the MN Well Code.
Well distance to potential
sourceto
from
the MNsource
Well Code.
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What is source water?
 Untreated water from streams, rivers, lakes, or
underground aquifers which is used to supply private
wells and public drinking water.
 Preventing drinking water contamination at the source
makes good public health, economic, and
environmental sense.
http://www.epa.gov/safewater/protect/pdfs/swppocket.pdf
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What regulation helps protect drinking
water in your community?
Pumping water from a well draws the water table
down and can pull in contaminants from the
well’s area of influence.
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Safe Drinking Water Act
 Focus on source
water protection 1996 Safe Drinking
Water Act
Amendments
 Source Water
Assessment
Programs (SWAPs)
assess areas
serving as sources
of drinking water
 identifies potential
threats
 initiates protection
efforts
•http://www.health.state.mn.us/divs/eh/water/swp/
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Safe Drinking Water State Revolving Fund
 For source water
assessments and
protection measures
 For a mixture of
source water related
local assistance
activities
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What is in a source water assessment?
1. Delineate the source water assessment area
2. Conduct an inventory of potential sources
of contamination
3. Determine the susceptibility of the water
supply to those contamination sources
4. Release the results to the public
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References
 EPA Wetlands
http://www.epa.gov/owow/wetlands
 U.S. Army Corps of Engineers – Section 404
permit application.
http://www.spk.usace.army.mil/pub/outgoing/co
/reg/ENG4345.pdf
 EPS Source Water Assessments
http://www.epa.gov/safewater/protect/factsh4.ht
ml
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