Integrated Site
Design Flow Chart
If it’s not designed and
maintained properly, it
won’t work properly…
p p y
…if it’s not working
properly, it’s as if you
never built it
City of Columbia BMP Manual
Plan Review, Inspection, and Maintenance
of BMPs and LID Features
 Places for interaction
with plans reviewers
Initial Meet
 Each of these should be
supported by checklists,
go bys helps
go-bys,
helps, and forms
 Each should be seen as
an opportunity to
educate, inform and
guide
Review
Review
SWPPPPlan
SW Mgmt
Inspection
Inspection
June 19, 2013
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Initial Meeting
Optional Initial Meeting



 Constraints – e.g. floodplains or sensitive streams,
Help inform of site constraints
Initial Meet
and requirements
Opportunity to guide into
better site design concepts
g
and to inform about changed
requirements and
opportunities under changed
zoning
Opportunity to give
educational materials,
checklists and other guidance
materials to developer
Concept Plan

Innovative zoning
opportunities are considered

Stormwater layout might
include:
buffers, TMDLs, etc.
 Opportunities – e.g. public private partnerships,
regional or neighborhood initiatives,
Your goals are to
ensure developer:
 Basic impervious areas and
treatment types,
types locations,
locations
sizes for land use controls
 Credit locations (if available)
 Locations and basic sizing of
structural controls
 Ideas – e.g. joint program with adjacent
development, trail or corridor extensions, land
dedications, etc.
(1) knows of external
constraints to the site
(2) is guided into
better designs and
meeting new criteria
 Sharing information – e.g. master plan models,

floodplain updates, digital mapping, etc.
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5
“What if” analysis done to
quickly screen options
Review
Goal is to lay out the
development and major
stormwater (and other)
features giving size, shape,
location, etc. to judge final
feasibility.
6
SWPPP’s are
detailed and
structured
Concept Plan Checklist
 Existing:
 Stormwater concept plan
Streams
Vegetation
Soils
Impervious
pe ous a
areas
eas
Clearing limits
Structural controls
Conveyances
Flow paths
Floodplain
oodp a
Up- and downstream
Water features
Floodplain lines
Env. sensitive areas
Channel crossings and
 Natural Features
Concept
plans are
simple yet
complete
l t
concerns
Review
SW SWPPP
Mgmt Plan
modifications
Relation to other regional
plans
Stormwater Management Plan – Piney Creek
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Storm Water Pollution
Prevention Plan (SWPPP)
 SWPPP
Maps
Narrative
Designs
 Details according to
local checklist
 Similar to current
grading and
drainage plan
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9
SWPPP (cont.)
 Address & legal
 Includes:
description
Existing conditions
Planned conditions
System design
Downstream analysis
Landscaping plan
Open space plan
Maintenance plan &
 Existing hydrologic
analysis
 Post
Post-development
development
hydrologic analysis
 Stormwater
management system
design
 Post-development
downstream analysis
agreements
Permit evidence
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CoC Design Tools
 Plans:
Erosion & sediment
control
Landscape & open
space
<insert screen shots of our new tools>>
Ops.
O
& maint.
i
 Easements & access
 Inspection & maint.
Agreements
 Evidence of other
permits
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Other Options (GSMM or others)
Maintenance Agreement
 Goal is to help ensure
long-term maintenance
Property owner has
perpetual responsibility
Typically reserved for
specific structures
General responsibility for
all system components
CoC Stormwater Ordinance
 Includes:
Responsible parties
General activities
Local government
responsibilities
Enforcement provisions
 Can include posting
of bonds
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Life cycle of a BMP –
traditional or LID
City’s Current Maintenance
Agreement
Concept
plan
SWPPP
 Each of these require
some internal
documents and actions:
 Checklists
 Training
 Procedures
 Policies
 Documents
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Construction Inspections
As built
cert.
 Construction inspections to ensure
Ongoing
maint.
compliance with approved plans:
 by staff or PE
 Each of these also
 written
 appropriate
pp p
enforcement if not right
g
requires data
management:
 As built inspection:
 Data management system
 GIS based management
 Inspection scheduling and
 submitted prior to C.O.
 certified by PE
 inspected by City
 prior to release of performance securities
reporting
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Bioretention:
Part of local maintenance
program:
Ongoing Inspection,
Maintenance, and Violations
 Periodic inspection maintenance agreement
 Written notification to responsible party if not
Inspection & Maintenance Requirements
 Infrastructure management system
 Procedures for on-going inspection and
maintained or found damaged
enforcement
 City to periodically inspect
 Written maintenance records kept
 City may perform maintenance and bill owner or lien
 Ability to inform and educate long-term
 Funding through fees and penalties
property
 Violations will follow local practice where existing and a
stepped process if none exists
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FILTER STRIP:
Dry Detention Pond:
Wet Ponds:
Inspection & Maintenance Requirements
Inspection & Maintenance Requirements
Inspection & Maintenance Requirements
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Enhanced Swale:
Infiltration Trench:
Porous Concrete:
Inspection & Maintenance Requirements
Inspection & Maintenance Requirements
Inspection & Maintenance Requirements
25
Porous Pavers:
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Questions?
Inspection & Maintenance Requirements
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