robert roseen, phd, pe, d.wre [email protected] 603-686-2488 · 9 shared implementation...
TRANSCRIPT
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POWER OF REDEVELOPMENT
1. The process of optimizing and prioritizing stormwater management retrofit opportunities to achieve the lowest cost solution, and
2. Harnessing the power of redevelopment through LID zoning to capture the private sector redevelopment cycle to gradually build resiliency and improve water quality through the upgrade of stormwater management and land development practices.
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1990 2000 2005 2010
Pe
rce
nt
Imp
erv
iou
s C
ove
r
YearExeter Newfields
4Source: M. Voorhees, EPA Region 1 TMDL Program, 2016
BMP OPTIMIZATION
Initial load=13.3 lbs N/acre/year
Optimized load=3.3 lbs N/acre/year
WQV load=0.6 lbs N/acre/year
1 acre 1 acre1 acre1 acre1 acre
1”WQV 0.25”WQV 0.25”WQV0.25”WQV 0.25”WQV
Removes 12.7 lbs N/ac/yr
Each removes 10 lbs N/ac/yr for a total of 40 lbs
•$40K can build one large system or 4 smaller systems
•An additional 27 lbs of nitrogen per year at nearly equivalent costs, or approximately 315% increase.
DRAINAGEAREA
BIO-RETENTION
POLLUTANT LOAD
REDUCTION
COST
0
2
4
6
8
10
12
14
16
TN R
ed
uct
ion
(to
ns
N/y
r)
Capital Cost ($M)
Integrated Planning Traditional MS4
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BEST COST SOLUTION
IP treats 2,000 acres & 8 Tons $14M Traditional treats 2,000 acres & 8 Tons $22M Traditional treats 5,250 acres & 13.5 Tons $95M
$0
$50
$100
$150
$200
$250
$300
$350
EX5 (133 T) IP 3 (129 T) EX6 (128 T) IP 6 (126 T) T 2 (125 T) IP 7 (119 T) T 3 (119 T) T 4 (114 T)
Tota
l 50
-YR
PV
Co
st (
$M
)
WWTF Capital Cost WWTF O&M NPS Capital Cost NPS O&M
020406080
100120140160180200
Tota
l Nit
roge
n L
oad
(to
ns
N/y
r)
Stormwater Load Groundwater (non-septic) Load Septic System Load WWTF Load Upper Watershed Load
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ANNUAL LOAD VS. PRESENT VALUE
Eelgrass Target Load (88 Tons/YR) DO Load Target (140 Tons/YR)
NP
S M
EP
NP
S M
EP
NP
S M
EP
NP
S M
EP
NP
S M
EP
T-ROIP-5 IP-3 IP-ROEX-3 T-5 T-3
Scenario (Annual Receiving Water Load (TONS))Ranked by Increasing Load Reduction
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IP3/IP6: MUNICIPAL COSTS
• A portion of the proposed BMPs are intended to treat “municipal” land uses, which the town would implement themselves. These include BMPs treating:• Institutional land uses• Roads• Outdoor and other built-up land (i.e. parks)
Town
Total NPS Implementati
on Cost($M)
Municipal NPS
Implementation Cost
($M)
WWTF Upgrade
Cost($M)
Total Cost to Town($M)
Annual Cost to Town (30 yrs)
($M)
Exeter $8.55 $4.90 $85.95 $90.85 $3.03
Newfields
$1.33 $0.76 $2.17 $2.94 $0.10
Stratham $3.74 $1.94 $3.26 $5.20 $0.17
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SHARED IMPLEMENTATION COSTS PUBLIC AND PRIVATE
1. $163,000 or 57% of the total annual non-point source implementation cost (capital and O&M) will be incurred by the municipality for controls on municipally owned land (i.e., roads, parks, schools)
2. $122,000 (or 43%) annually is estimated to be covered by the private sector for the redevelopment and operation and maintenance of non-town owned properties occurring primarily in commercial, industrial, and residential areas.
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WISE PROJECT TEAM
Robert Roseen, Project DirectorRenee Bourdeau, Project ManagerChad Yaindl, Senior Staff Engineer
Alison Watts, Watershed Science Lead
Cliff Sinnott and Theresa Walker, Intended User Representatives
Jennifer Royce Perry, Public Works Director, Exeter Don Clement, CouncilPaul Vlasich, Town EngineerSylvia VonAulock, Town Planner
Paul Stacey, Science Investigator, Steve Miller, Training Program and Climate Adaptation
Doug Thompson and Eric Roberts, Collaboration Experts
Clay Mitchell, Town Planner, NewfieldsBill Meserve, Municipal Rep.
Paul Deschaine, Town Administrator, StrathamLincoln Daley, Town Planner
Rich Langan, Funding Agency DirectorKalle Matso, Program Manager
Mark Voorhees, Newton Tedder, Dan Arsenault, David Pincumbe, Carl Deloi
Ted Diers, Matt Wood, Phil Trowbridge, Barbara MacMillan, Sally Soule, Eric Williams
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ADDITIONAL INFORMATION
http://www.wisenh.net/
Robert M. Roseen, Ph.D., P.E., D.WRE.
Principal, Waterstone Engineering, PLLC(603) 686-2488 (c)
Questions/Comments?
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Robert M. Roseen, Ph.D., P.E., D.WRE.Principal, Waterstone Engineering, PLLC
(603) 686-2488 (c) [email protected]
2016 Environmental Merit Award EPA Region 1
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POTENTIAL UPPER WATERSHED CONTRIBUTIONS TO MEET WATER QUALITY GOALS
0
10
20
30
40
50
60
70
80
90
100
Load
Re
du
ctio
n (
ton
s N
/yr)
Potential Timeline
WWTF Reductions
NPS Reductions (WISE area)
NPS Reductions (Upper Exeter R. Watershed)
Eel Grass Target Load = 88 tons/yr
DO Total Load = 140 tons/yr
Adaptive management and monitoring fine tunes management of uncertainty
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APPLICATIONS
• The new proposed small MS4 permits for NH and MA
include a requirement for optimizing and ranking
retrofits opportunities.
• Optimization of designs used at the watershed scale
can significantly reduce costs for achieving load
reduction targets for nitrogen, phosphorous, and
other pollutants.
• Optimization can be conducted for volume reduction
for climate resiliency.
• Adaptive management and monitoring fine tunes
management of uncertainty