Retrofit Reconnaissance Investigation
WATERSHED:
SUBWATERSHED:
RRI
UNIQUE SITE ID:
DATE:
ASSESSED BY:
CAMERA ID:
PICTURES:
GPS ID:
LMK ID:
LAT:
LONG:
SITE DESCRIPTION
Name:
Address:
Ownership:
Public
If Public, Government Jurisdiction:
Local
Downstream Regulator (POC):
Proposed Retrofit Location:
Storage
Existing Pond
Above Roadway Culvert
Below Outfall
In Conveyance System
In Road ROW
Near Large Parking Lot
Other:
DRAINAGE AREA TO PROPOSED RETROFIT
Drainage Area ≈
Imperviousness ≈
%
Impervious Area ≈
Notes:
EXISTING STORMWATER MANAGEMENT
Existing Stormwater Practice:
If Yes, Describe:
Yes
Private
State
Unknown
DOT
On-Site
Hotspot Operation
Small Parking Lot
Individual Street
Underground
Drainage Area Land Use:
Residential
SFH (< 1 ac lots)
SFH (> 1 ac lots)
Townhouses
Multi-family
Commercial
No
Other:
Individual Rooftop
Small Impervious Area
Landscape/Hardscape
Other:
Institutional
Hot Spot
Industrial
Sediment Source
Transport-Related
Park
Undeveloped
Other:
Possible
Describe Existing Site Conditions, Including Existing Site Drainage and Conveyance:
Existing Head Available and Points Where Measured:
Page 1 of 4
Adapted from Center for Watershed Protection RRI Checklist
Unique Site ID: _____
Retrofit Reconnaissance Investigation
PROPOSED RETROFIT
Water Quality
Recharge
Demonstration/Education
Repair
Retrofit Volume Computations – Target Storage:
RRI
Channel Protection
Flood Control
Other:
Retrofit Volume Computations – Available Storage:
Proposed Treatment Option:
Extended Detention
Wet Pond
Created Wetland
Bioretention
Pervious Pavement
Filtering Practice
Infiltration
Curb Ext Bioretention
Swale
Other:
Describe Elements of Proposed Retrofit, Including Surface Area, Maximum Depth of Treatment, and Conveyance:
SITE CONSTRAINTS
Adjacent Land Use:
Residential
Commercial
Industrial
Transport-Related
Undeveloped
Other:
Possible Conflicts Due to Adjacent Land Use?
If Yes, Describe:
Conflicts with Existing Utilities:
None
Unknown
Yes
Possible
Sewer
Water
Gas
Cable
Electric
Electric to Streetlights
Overhead Wires
Other:
Soils:
Soil auger test holes:
Evidence of poor infiltration (clays, fines):
Evidence of shallow bedrock:
Evidence of high water table (gleying, saturation):
Measurements:
Street Width:
Sidewalk Width:
Parkway Width:
ROW Width:
Constructability/Maintainability:
No Constraints
Constrained due to
Slope
Space
Yes
No
Utilities
Tree Impacts
Structures
Property Ownership
Other:
Potential Permitting Factors:
Dam Safety Permits Necessary
Probable
Not Probable
Impacts to Wetlands
Probable
Not Probable
Impacts to a Stream
Probable
Not Probable
Floodplain Fill
Probable
Not Probable
Impacts to Forests
Probable
Not Probable
Impacts to Specimen Trees
Probable
Not Probable
How many?
Approx. DBH
Institutional
Park
Other factors:
Yes
Yes
Yes
Yes
No
No
No
No
Pavement Condition:
SKETCH
Page 2 of 4
Adapted from Center for Watershed Protection RRI Checklist
Unique Site ID: _____
Retrofit Reconnaissance Investigation
Page 3 of 4
Adapted from Center for Watershed Protection RRI Checklist
RRI
Unique Site ID: _____
Retrofit Reconnaissance Investigation
RRI
DESIGN OR DELIVERY NOTES
FOLLOW-UP NEEDED TO COMPLETE FIELD CONCEPT
Confirm property ownership
Confirm drainage area
Confirm drainage area impervious cover
Confirm volume computations
Complete concept sketch
Estimate reduction on downstream regulator overflows
Other:
Obtain existing stormwater practice as-builts
Obtain site as-builts
Obtain detailed topography
Obtain utility mapping
Confirm storm drain invert elevations
Confirm soil types
INITIAL FEASIBILITY AND CONSTRUCTION CONSIDERATIONS
SITE CANDIDATE FOR FURTHER INVESTIGATION:
IS SITE CANDIDATE FOR EARLY ACTION PROJECT(S):
IF NO, SITE CANDIDATE FOR OTHER RESTORATION PROJECT(S):
IF YES, TYPE(S):
Page 4 of 4
YES
YES
YES
Adapted from Center for Watershed Protection RRI Checklist
NO
NO
NO
MAYBE
MAYBE
MAYBE
Unique Site ID: _____