rainscapes at home...local and regional significance montgomery county potomac river 1. anacostia 2....
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8/13/2013
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Watershed Restoration:
RainScapes at Home
Montgomery County Department of Environmental ProtectionWatershed Management Division RainScapes ProgramAugust 1, 2013
Why do we need RainScapes?What are Rainscapes RainScapes Program RainScapes Resources FAQs
Overview
Local and Regional SignificanceLocal and Regional Significance
Montgomery Montgomery CountyCounty
Potomac RiverPotomac River
1. Anacostia2. Cabin John3. Lower
Monocacy4. Lower Potomac
District5. Patuxent6. Rock Creek7. Seneca Creek8. Upper Potomac
District
Your Connection to the Chesapeake Bay
Your Watershed
The Cabin John Watershed flows into the Potomac River which flows into the Chesapeake
Let’s look at the Cabin John stream and its impact on the bay
I Love the Chesapeake
Bay!
Bay
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Cabin John WatershedImpervious Area Impacts
Potomac
Rockville
Bethesda
Potomac River
Cabin John WatershedImpervious Area Impacts
Potomac
RockvilleParking Lots
Bethesda
Potomac River
Cabin John WatershedImpervious Area Impacts
Potomac
RockvilleParking Lots
Roads
Bethesda
Potomac River
Cabin John WatershedImpervious Area Impacts
Potomac
RockvilleParking Lots
RoadsBuildings
Bethesda
Potomac River
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Stormwater runs off impervious surfaces, gets Polluted and goes straight into storm
Problem: Problem: stormwater runoffstormwater runoff
What is it? ‐ Rain that falls in a storm (stormwater)Aqua, the
raindrop
g g gsewers and streams into our Rivers and Chesapeake Bay = Stormwater Runoff
Storm, polluted runoff water– hotter, dirtier, full of nutrients (and more!)
What happens when it rains?
10% or less 10% or less surface surface runoffrunoff
30% or more 30% or more surface surface runoffrunoff
30%
56%
4%
40%
+
35%
35%+
Landcover change from Forest to Urban Causes water to behave differently
Impacts of urbanization
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Compare the surface condition of a forest and a parking lot
where can the water can soak in?
Where is all this imperviousness???
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driveway
rooftop
ROOFTOPS and STREETS
In typical urban residential areas, rooftops account for 30In typical urban residential areas, rooftops account for 30‐‐40% of the total 40% of the total impervious area impervious area –– capturing runoff from residential capturing runoff from residential rooftops and in the streetsrooftops and in the streets
CAN MAKE A CAN MAKE A DIFFERENCE, capturing runoff from up to 100% of the IA in residential DIFFERENCE, capturing runoff from up to 100% of the IA in residential
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Walhonding Tuscarawas
on-street parking
roadway
Our own impervious surfaces are part of the problem
Water flowing off a roof can reach 140°F
Unchecked runoff pollutes, causes erosion
Sandy Flowers,Eco Savvy 2004
What is in stormwater runoff?
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What is in stormwater runoff? What are the effects of stormwater runoff
Sanitary Sewer Overflows / Threats to infrastructure
What else happens with an increase of stormwater
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LOSS of navigation and commerceBladensburg was a busy port, shipping out flour and tobacco, until
the river silted up by 1800. http://www.bladensburg.com/html/history.html
Down‐cut and enlarged, shallow streams
Stream Resource Conditions
2020
There are over 1,500 miles of streams in Montgomery County. Most households are within ½ mile of a local
stream, yet many of us are unfamiliar with this aquatic ecosystem literally in our backyards.
http://www6.montgomerycountymd.gov/dectmpl.asp?url=/Content/dep/maps/introwqm.asp
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What about the fish? Indicators of water quality
Green Sunfish
Rock Bass
Brown troutRosyside Dace
Hog Sucker
Yellow Bullhead Catfish
Images: Montgomery County DEP Biological Monitoring Group
http://www6.montgomerycountymd.gov/dectmpl.asp?url=/Content/dep/water/subwatershed.asp
What and who else needs clean water?
Turtle hatchling
Baltimore Checkerspotcaterpillar
Peeper frog
Cabarus diogenes
Northern Green Frogs
Watershed RestorationLID and RainScapes:
Reduce - infiltrate
Reuse –store &irrigate
Rain BarrelCistern
LID and RainScapes:Multi-benefit
Solutions
Recycle – evapo-transpirate/reuse materials
•Tree Canopy•ConservationLandscapes
•Green Roofs
•Rain Gardens•Permeable Pavement
•Tree Canopy•ConservationLandscapes•LID retrofits
Rain BarrelCistern
RAINSCAPES2004‐ 2013
Started as a grant funded pilot focused on outreach and demonstration projects Now is part of the WMD‐Watershed Restoration Section focused on implementation of projects with predefined goals and measurable results
MS4 Permit and the Implementation plan mandated C t WQPC F d d County WQPC Funded Program elements
RainScapes Neighborhoods Targeted Subwatershed Approach
RainScapes Rewards Rebate Program Partnerships with Watershed Groups Workshops for Residents Demonstration Projects Landscape Professionals Training RainScapes for Schools
Treatment goal: 50 Impervious Acres controlled for the first 1” of rain by Feb 2015
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What Does a RainScape Look Like?Commercial / Institutional examples
Ultra‐urban Slope by parking lot Preferential parking and slope stabilization
Many scales and settings 200 sf of planting area by patio
US‐EPA HQ DC
Sometimes it looks like part of the hardscape
Rain garden/ stormwater planter CisternPermeable Interlocking Concrete Pavement Driveway
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RainScapes Techniques in Action
Rebates for single family residences: $2,500 per property
with lifetime project caps
Rebates for multi-family/commercial /
RainScapes Rewards
Incentive Program
Rebates for multi-family/commercial / institutional:
$10,000 per propertywith lifetime project caps
All County property owners outside of municipalities Rockville, Gaithersburg and Takoma Park are eligible for rebates
RainScapes Technique
Maximum Residential Rebates$2500/parcel
Maximum Commercial, Multi-Family, HOA common land, and
Institutional Rebates$10,000/parcel
Canopy Trees$200/tree; # trees determined by space on parcel. Must shade or cover impervious area
$200/tree; # trees determined by space on parcel. Must shade or cover impervious area
Conservation Landscaping - Replacement of turf or invasive species
$2.00/square foot with no ponding$3.00/square foot with 2” of pondingProject must replace turf or invasivesProject needs to intercept runoff250 square foot minimum
$2.00/square foot with no ponding$3.00/square foot with 2” of pondingProject must replace turf or invasivesProject needs to intercept runoff350 square foot minimum
Dry Wells $1.00 per gal ; $600 maximum $1.00 per gal; $600 maximum
Green Roofs $10/square foot, 250 square feet minimum $10/square foot; 300 square feet minimum
Permeable Pavers and P C t
$4/square feet or $1200, whichever is greater; 100 f t i i
$4/square feet or $5000, whichever is greater; 100 f t i i
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Porous Concrete 100 square feet minimum 100 square feet minimum
Pavement Removal
$4/square foot if replacing with conservation landscaping$2/square foot if replacing with turf 100 square feet minimum
$4/square foot if replacing with conservation landscaping$2/square foot if replacing with turf 300 square feet minimum
Rain Garden
Based on square foot of ponding area and soil replacement (media)depth: 1’ of media: $5/ square foot 2’ of media: $7/square foot3’ of media; $9/square foot or $1200/ rain garden, whichever is greater –see RS design manual for sizing charts
Based on square foot of ponding area and soil replacement (media)depth: 1’ of media: $5/ square foot 2’ of media: $7/square foot3’ of media; $9/square foot or $2500/ rain garden, whichever is greater –see RS design manual for sizing charts
Water Harvesting: Cisterns
$1/Gallon (minimum 250 gallons, up to 500 gallons)
$1/ Gallon (minimum 250 gallons, up to 2000 gallons)
Water Harvesting: Rain Barrels
$250 (must capture 200 gallons if single family home; 100 if Townhome); $1/gallon
$250 (must capture 200 gallons); $1/gallon
Rewards Rebate Program: Rain GardensResidential
• $1,200 ‐ $2500
• Rebate varies depending on depth of soil profile amended or modified
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Rewards Rebate Program:Rain Gardens
Commercial, Multi‐Family, or Institutional• $2500 ‐ $10,000
• Rebate varies depending on depth of soil profile amended or modified and size of the rain garden
Rewards Rebate Program: Conservation Landscaping
• $2.00‐$3.00 per square foot depending on project
•Minimum 250 square foot conversion of turf area or invasive species.
•Soil must be de‐compacted 9” with 2” of compost added
•Must be designed to intercept stormwater
Rewards Rebate Program: Conservation Landscaping
Commercial, Multi‐Family, or Institutional
• $2.00‐3.00 per square foot depending on project
•Minimum 350 square foot conversion of turf area or invasive species.
•Soil must be de‐compacted 9” with 2” of compost addedadded
•Must be designed to intercept stormwater
Rewards Rebate Program: Tree Canopy
• up to $200 per tree
•Number of trees determined by available space
•Minimum 1” caliper
•Must be providing shading or cover to impervious surfaceimpervious surface
•Must be on our canopy tree list
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Rewards Rebate Program: Permeable Paver Retrofits
• $1,200 or $4.00 a square foot ‐up to $2500 (Whichever is greater ‐ residential)
•$5000 or $4.00 a square foot – up to $10,000 (whichever is greater –Commercial/institutional)
•Must be for conversion of existing hardscape and be a minimum area of 100 sf
Rewards Rebate Program: Pavement Removal
• $4 per square foot for conversion to a conservation landscape
•$2 per square foot for conversion to turf.
•9” of de compaction and 2” of•9 of de‐compaction and 2 of compost required
•Must be for conversion of existing hardscape and be a minimum area of 100 sf (residential) or 300 sf(commercial/institutional)
Rebate Program: Green Roofs
• $10 per square foot
Residential
•Must be on an existing roof and cover either ¼ of the roof area or 250 square feet
•Commercial, Multi‐Family, or Institutional
•Must be on an existing roof retrofit and cover 300 square feet
•Requires approval letter from structural engineer
Rebate Program: Rain Barrels
•$250 per property
•Must capture 200 gallons
•Maximum rebate is $250; $1/gal.
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•$1 per gallon
•250 gallon minimum
•$500 maximum rebate
•Exterior irrigation only
Rewards Rebate Program: Water Harvesting: CisternsResidential
•$1 per gallon
•250 gallon minimum
•$2000 maximum rebate
•Exterior irrigation only
Rewards Rebate Program: Water Harvesting ‐ CisternsCommercial, Multi‐Family, or Institutional
Rewards Rebate Program:Dry Wells
• $1 per gallon
• $600 maximum rebate
• Can be a DIY linear drywell
• Can be a contractor installed conventional drywell
Ask yourself ‐What Can you do at home on your private property?
RainScapes Rewards Projects distribution map
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Help yourself visualize your new RainScape with technology
Overlay images created with iPad and Skitch ©
A simple change to a conservation landscape that will slow the flow and improve access to the back
Installed in a day!
Turf removedGround decompactedSoil amended with
compost Native plants added
Presto-Change-o! Before and After – Conservation Landscape – flower yard
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Before and after –3 lots of drainage captured
Very compacted turfConservation landscape and dry wells plus underdrained rain garden above
Tough turf to Green oasis
HOA – Before and after RainScapes Rewards Conservation Landscape Project
Making a beautiful environmentally sound community entrance
Removing invasive species and replacing with native species and other acceptable non-invasive ornamentals
Combined RainScapes Rewards project types Conservation Landscape + Rain Garden @ Leisure World Mutual 11
Reduces runoff, attracts pollinators, beautifies the communityMaster Gardener led project on HOA land
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What kinds of Plants are good?
Right plant in the right place!Group plants by similar requirementsPlan for four seasons of interest
Spring
Spring Spring
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Summer Summer
Fall
Fall
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Fall Color and then winter comesWinter
Winter
Late Spring Fall
Gardens change over a year
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Spring‐Summer‐Fall‐Winter 4 seasons – 7 kinds of plants
Defining spaces, creating placesBefore After
CisternsCisterns
Rain GardensRain Gardens
Street TreesStreet Trees
Conservation LandscapesConservation Landscapes
Rain BarrelsRain Barrels
Green RoofsGreen Roofs
Helps to Achieve Total Maximum Daily Loads (TMDLs)Helps to Achieve Total Maximum Daily Loads (TMDLs)
TMDLs set pollutant reduction goalsTMDLs set pollutant reduction goals
RainScapes add RainScapes add stormwaterstormwater management to a management to a site beautifullysite beautifully
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TMDLs set pollutant reduction goalsTMDLs set pollutant reduction goals
Bacteria, sediment, nutrients, with trash under developmentBacteria, sediment, nutrients, with trash under development
Reduces pollutionReduces pollution
Increase use of Environmental Site Design (ESD) to the maximum extent practicable (MEP)Increase use of Environmental Site Design (ESD) to the maximum extent practicable (MEP)
Assure public input and stewardship opportunitiesAssure public input and stewardship opportunities
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Where could you do a RainScape?
What’s the next set of steps?
For more info:
Application Process – online form
Check out our website for more info on designs
Step 1: On‐line application
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Starting screen –Enter your property and project information
STEP 2: �Before you Begin the Project
Wait for Department of Environmental Protection RainScapes to contact you after you submit.
Contact MISS UTILITY and have the project area marked prior to site inspection.
Upon verification of eligibility, you may begin work on your project.
Projects must be installed within six months of the preliminary inspection date.
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STEP 3: � Completion after you install Contact the DEP RainScapes program
Schedule the mandatory final inspection.
Correct installation of the project will be verified, and the project area will be photographed.
Itemized receipts, contractor bills and/or i i f ll j t t t binvoices for all project costs must be submitted.
All projects require a signed property owner agreement.
If all requirements are met, the rebate will be approved, and a check will be issued by the County Department of Finance within three to six weeks.
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Other administrative details You must initiate the request for final inspection
Email: rainscapes@montgomerycountymd.gov
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Plant plants! Help nature stay clean!
Questions?
www.rainscapes.orgwww.rainscapes.org
ann.english@montgomerycountymd.gov ann.english@montgomerycountymd.gov
rainscapes@montgomerycountymd.govrainscapes@montgomerycountymd.gov
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