8/13/2013 1 Watershed Restoration: RainScapes at Home Montgomery County Department of Environmental Protection Watershed Management Division RainScapes Program August 1, 2013 Why do we need RainScapes? What are Rainscapes RainScapes Program RainScapes Resources FAQs Overview Local and Regional Significance Local and Regional Significance Montgomery Montgomery County County Potomac River Potomac River 1. Anacostia 2. Cabin John 3. Lower Monocacy 4. Lower Potomac District 5. Patuxent 6. Rock Creek 7. Seneca Creek 8. 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
20
Embed
RainScapes at Home...Local and Regional Significance Montgomery County Potomac River 1. Anacostia 2. Cabin John 3. Lower Monocacy 4. Lower Potomac District 5. Patuxent 6. Rock Creek
This document is posted to help you gain knowledge. Please leave a comment to let me know what you think about it! Share it to your friends and learn new things together.
Transcript
8/13/2013
1
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
8/13/2013
2
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
8/13/2013
3
Stormwater runs off impervious surfaces, gets Polluted and goes straight into storm
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
8/13/2013
4
Compare the surface condition of a forest and a parking lot
where can the water can soak in?
Where is all this imperviousness???
26
42
2925
43
30
20
25
30
35
40
45
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
26
3
25
20
5
10
15
20
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?
8/13/2013
5
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
19
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.
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 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
8/13/2013
7
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
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
$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
8/13/2013
9
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
8/13/2013
10
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.
8/13/2013
11
•$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
8/13/2013
12
Help yourself visualize your new RainScape with technology
Reduces runoff, attracts pollinators, beautifies the communityMaster Gardener led project on HOA land
8/13/2013
14
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
8/13/2013
15
Summer Summer
Fall
Fall
8/13/2013
16
Fall Color and then winter comesWinter
Winter
Late Spring Fall
Gardens change over a year
8/13/2013
17
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
6868
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
8/13/2013
18
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
72
8/13/2013
19
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.
74
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.
75
Other administrative details You must initiate the request for final inspection