HomeMy WebLinkAbout20260708 269 Broadway Site Plan Review SWPPP
STORMWATER POLLUTION PREVENTION PLAN
269 Broadway Mixed Use
269 Broadway
Saratoga Springs, NY 12866
August 13, 2026
Prepared For:
269 Broadway Saratoga, LLC
Prepared By:
Studio A Landscape Architecture + Engineering D.P.C.
74 Warren Street
Saratoga Springs, NY 12866
Table of Contents
DESCRIPTION OF EXISTING SITE ....................................................................................................... 2
DESCRIPTION OF EXISTING SOILS ..................................................................................................... 2
DESCRIPTION OF PROPOSED DEVELOPMENT .................................................................................. 2
CONSTRUCTION PHASING ................................................................................................................ 2
POLLUTION PREVENTION MEASURES .............................................................................................. 3
SEDIMENTATION AND EROSION CONTROL ...................................................................................... 3
PERMANENT STORMWATER CONTROLS ......................................................................................... 3
SITE INSPECTIONS DURING CONSTRUCTION ................................................................................... 4
MAINTENANCE OF STORMWATER MANAGEMENT SYSTEM............................................................ 4
RETENTION OF RECORDS ................................................................................................................. 4
Appendix A PROJECT LOCATION MAP
Appendix B USDA SOIL SURVEY
Appendix C STORMWATER PRACTICE LOCATION MAP
Appendix D STORMWATER CALCULATIONS
Appendix E STORMWATER CONTROL FACILITY MAINTENANCE AGREEMENT (DRAFT
INCLUDED, TO BE SIGNED IN FINAL SWPPP)
Appendix F O&M MANUAL
2
DESCRIPTION OF EXISTING SITE
The project site is located between Broadway and Hamilton Street, at 269 Broadway (Tax Map ID: 165.75-
1-7). The site is currently developed with a parking lot, though it was previously developed with a two-
story brick building until it was demolished in 2017. The site slopes from Broadway to Hamilton Street.
Catch basins and storm sewer lines are located within the Hamilton Street ROW. The property is located
within the Saratoga Springs MS4 (SWIS: 411500).
DESCRIPTION OF EXISTING SOILS
The United States Department of Agriculture (USDA) Soil Survey obtained from the Natural Resource
Conservation Service website indicates the surficial soil on the property to be 100% Conesus silt loam
(WnB). The WnB series is identified by the USDA as hydrologic soil group (HSG) “A”, which have a low run
off potential. These soils typically consist of loamy sand transitioning to sand deeper on the soil profile.
Borings completed by Terracon Consultants in 2019 encountered urban fill to depths between 3 to 9 feet
below ground surface (bgs). Under the fill, sand was encountered in 2 to 8 feet thick layers. Layers of silt
and clay were encountered under the sand, extending to depths 25 to 31 feet bgs. Bedrock was observed
at depths ranging from 25.2 to 33.4 feet bgs.
In 2022, Terracon Consultants completed additional subsurface investigations, including the installation
of 15 groundwater observation wells. The results of this testing indicate that the static groundwater table
is located at 290.3 ft., where the average existing grade of the site is 296.6 ft.
DESCRIPTION OF PROPOSED DEVELOPMENT
Proposed site development includes the construction of a mixed-use building, municipal utility
connections, and stormwater management practices. Pervious areas remaining after development will be
landscaped with native plants, ornamental trees, or restored with grass, meadow, and flowering seed
mixes. Anticipated disturbance areas, pervious and impervious areas are as follows:
Disturbance Area ±28,357 ft2
Impervious (existing/proposed) ±8,471 ft2 /±22,567 ft2
Pervious (existing/proposed) ±14,093 ft2 / ±0 ft2
CONSTRUCTION PHASING
All proposed demolition and development are anticipated to be completed a single phase during the
spring of 2027. Installation of silt fences shall be in accordance with the construction drawings prior to
any disturbance of the existing ground surface. Immediately following the installation of silt fence, a
stabilized construction entrance consisting of crushed stone and geotextile stabilization fabric will be
installed as shown on the construction drawings. No land disturbance at any phase in construction shall
proceed prior to the installation and establishment of required E&SC measures indicated on the
construction drawings. The infiltration system shall be protected from heavy construction equipment
traffic. All upstream construction shall be completed and stabilized before connection to the downstream
infiltration facilities. A dense and vigorous vegetative cover shall be established over the contributing
pervious drainage areas before runoff can be accepted into the facilities.
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POLLUTION PREVENTION MEASURES
Any litter on site, including construction debris, will be picked up each day and disposed of into solid
waste containers. The contractor shall provide an approved secondary containment system for all fuel
and petroleum temporarily stored on site. During the placement of concrete for the building foundation,
measures will be taken to ensure that fresh concrete does not enter any defined drainage paths and a
concrete washout area will be provided by the contractor in accordance with the construction drawings.
Topsoil and imported fill materials will be stockpiled in the protected areas indicated on the construction
drawings.
SEDIMENTATION AND EROSION CONTROL
Prior to commencing any land clearing, the silt fence will be installed in accordance with the construction
drawings and in accordance with the New York State Stormwater Management Design Manual, January
2015 and the New York Standards and Specifications for Erosion and Sediment Control. A stabilized
temporary construction entrance at the location indicated on the construction drawings will be required
for all construction traffic entering and leaving the site. The contractor is required to maintain all erosion
and sediment control measures throughout the construction period.
All exposed surfaces not covered with paving, structures, and similar finished surfaces will be covered
with topsoil and seeded within 10-days following substantial completion of construction to establish a
turf covering or will be landscaped in accordance with the construction drawings. The areas receiving
seed will be mulched to minimize erosions. Silt fences shall be installed downslope of the newly seeded
areas. The silt fences shall be maintained and replaced as required during the course of construction until
a well-established vegetative cover is established.
PERMANENT STORMWATER CONTROLS
Permanent stormwater controls for the proposed development will include the construction of
stormwater runoff reduction designed to meet water quality reduction and treatment goals. Permanent
storm water controls include a green roof, permeable pavers, tree plantings, stormwater planters,
underground infiltration chambers and a conveyance system consisting of catch basins, roof drains, and
storm culverts.
Green infrastructure (GI) practices, sized in accordance with the New York State Department of
Environmental Conservation Stormwater Management Design Manual, were applied under the proposed
stormwater management system to provide a total Runoff Reduction Volume (RRv) greater than or equal
to the Water Quality volume (WQv_ generated from the proposed development. The applied GI
technique include green roofs, tree plantings, permeable pavers, and stormwater planters.
WQv was established in accordance with the New York State Department of Environmental Conservation
Stormwater Management Design Manual, July 31, 2024, with a 90% recurrence interval storm event
rainfall magnitude assumed to be 1.10-inches based on site locality. The following table summarizes the
RRv values of the Green Infrastructure Practices and Standard Management Practices used to treat a RRv
min.= 1,081 cubic feet and a WQv = 1,596 cubic feet. The RRv provided exceeds the required WQv.:
Table 1. Green Infrastructure and Standard Management Practice Summary
Green Infrastructure/SMP Provided RRv Provided (ft3) WQv Treated (ft3)
Tree Planting/Pits 119 -
4
Stormwater Planters 567 -
Permeable Pavers 319 -
Green Roof 887 -
Infiltration Chambers 264 -
RRv total = 2,156 ft3 ≥ Min. RRv; RRv + WQvtreated = 2,156 ft3 ≥ WQv
SITE INSPECTIONS DURING CONSTRUCTION
A qualified inspector as defined in Appendix A of the New York State Department of Environmental
Conservation SPDES General Permit for Stormwater Discharges from Construction Activity Permit No. GP-
0-25-001 shall conduct construction inspections in accordance with Part IV.C of GP-0-25-001.
MAINTENANCE OF STORMWATER MANAGEMENT SYSTEM
The catch basins and outlet structures should be checked for the accumulation of debris that may
constrict runoff from flowing freely at the outlet invert elevations. In addition to the maintenance of the
stormwater practices described, the lawns and landscaped areas shall be maintained in good condition to
prevent erosion. Any deteriorated areas of lawn shall be re-seeded, and a stable turf reestablished.
Additionally, the property owner shall provide arrangements for the future maintenance of the post-
construction stormwater control measures in accordance with the Sample Stormwater Control Facility
Maintenance Agreement (Appendix E) and the Operation and Maintenance Manual (Appendix F) to be
recorded in the office of the County Clerk or its terms shall be incorporated into covenants appearing in
the deed, declarations of covenants and restrictions or other such documents to ensure that record
notice of its terms is provided to future owners of the site.
RETENTION OF RECORDS
The contractor shall maintain at the project site a copy of this Storm Water Pollution Prevention Plan
(SWPPP). In addition, the contractor shall maintain a site logbook which will contain all storm water and
erosion control inspection reports to be prepared by the qualified professional. A current copy of the
construction drawings shall also be kept in the logbook with comments that may have been added by the
qualified inspector.
SWPPP Report Prepared by:
Matthew E. Huntington, PE
Principal
For Studio A | Landscape Architecture + Engineering
APPENDIX A PROJECT LOCATION MAP
PROJECT LOCATION
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APPENDIX B USDA SOIL SURVEY
United States
Department of
Agriculture
A product of the National
Cooperative Soil Survey,
a joint effort of the United
States Department of
Agriculture and other
Federal agencies, State
agencies including the
Agricultural Experiment
Stations, and local
participants
Custom Soil Resource
Report for
Saratoga
County, New
York
Natural
Resources
Conservation
Service
July 27, 2026
Preface
Soil surveys contain information that affects land use planning in survey areas.
They highlight soil limitations that affect various land uses and provide information
about the properties of the soils in the survey areas. Soil surveys are designed for
many different users, including farmers, ranchers, foresters, agronomists, urban
planners, community officials, engineers, developers, builders, and home buyers.
Also, conservationists, teachers, students, and specialists in recreation, waste
disposal, and pollution control can use the surveys to help them understand,
protect, or enhance the environment.
Various land use regulations of Federal, State, and local governments may impose
special restrictions on land use or land treatment. Soil surveys identify soil
properties that are used in making various land use or land treatment decisions.
The information is intended to help the land users identify and reduce the effects of
soil limitations on various land uses. The landowner or user is responsible for
identifying and complying with existing laws and regulations.
Although soil survey information can be used for general farm, local, and wider area
planning, onsite investigation is needed to supplement this information in some
cases. Examples include soil quality assessments (http://www.nrcs.usda.gov/wps/
portal/nrcs/main/soils/health/) and certain conservation and engineering
applications. For more detailed information, contact your local USDA Service Center
(https://offices.sc.egov.usda.gov/locator/app?agency=nrcs) or your NRCS State Soil
Scientist (http://www.nrcs.usda.gov/wps/portal/nrcs/detail/soils/contactus/?
cid=nrcs142p2_053951).
Great differences in soil properties can occur within short distances. Some soils are
seasonally wet or subject to flooding. Some are too unstable to be used as a
foundation for buildings or roads. Clayey or wet soils are poorly suited to use as
septic tank absorption fields. A high water table makes a soil poorly suited to
basements or underground installations.
The National Cooperative Soil Survey is a joint effort of the United States
Department of Agriculture and other Federal agencies, State agencies including the
Agricultural Experiment Stations, and local agencies. The Natural Resources
Conservation Service (NRCS) has leadership for the Federal part of the National
Cooperative Soil Survey.
Information about soils is updated periodically. Updated information is available
through the NRCS Web Soil Survey, the site for official soil survey information.
The U.S. Department of Agriculture (USDA) prohibits discrimination in all its
programs and activities on the basis of race, color, national origin, age, disability,
and where applicable, sex, marital status, familial status, parental status, religion,
sexual orientation, genetic information, political beliefs, reprisal, or because all or a
part of an individual's income is derived from any public assistance program. (Not
all prohibited bases apply to all programs.) Persons with disabilities who require
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alternative means for communication of program information (Braille, large print,
audiotape, etc.) should contact USDA's TARGET Center at (202) 720-2600 (voice
and TDD). To file a complaint of discrimination, write to USDA, Director, Office of
Civil Rights, 1400 Independence Avenue, S.W., Washington, D.C. 20250-9410 or
call (800) 795-3272 (voice) or (202) 720-6382 (TDD). USDA is an equal opportunity
provider and employer.
3
Contents
Preface....................................................................................................................2
How Soil Surveys Are Made..................................................................................5
Soil Map..................................................................................................................8
Soil Map................................................................................................................9
Legend................................................................................................................10
Map Unit Legend................................................................................................11
Map Unit Descriptions.........................................................................................11
Saratoga County, New York............................................................................13
WnB—Windsor loamy sand, 3 to 8 percent slopes.....................................13
References............................................................................................................15
4
How Soil Surveys Are Made
Soil surveys are made to provide information about the soils and miscellaneous
areas in a specific area. They include a description of the soils and miscellaneous
areas and their location on the landscape and tables that show soil properties and
limitations affecting various uses. Soil scientists observed the steepness, length,
and shape of the slopes; the general pattern of drainage; the kinds of crops and
native plants; and the kinds of bedrock. They observed and described many soil
profiles. A soil profile is the sequence of natural layers, or horizons, in a soil. The
profile extends from the surface down into the unconsolidated material in which the
soil formed or from the surface down to bedrock. The unconsolidated material is
devoid of roots and other living organisms and has not been changed by other
biological activity.
Currently, soils are mapped according to the boundaries of major land resource
areas (MLRAs). MLRAs are geographically associated land resource units that
share common characteristics related to physiography, geology, climate, water
resources, soils, biological resources, and land uses (USDA, 2006). Soil survey
areas typically consist of parts of one or more MLRA.
The soils and miscellaneous areas in a survey area occur in an orderly pattern that
is related to the geology, landforms, relief, climate, and natural vegetation of the
area. Each kind of soil and miscellaneous area is associated with a particular kind
of landform or with a segment of the landform. By observing the soils and
miscellaneous areas in the survey area and relating their position to specific
segments of the landform, a soil scientist develops a concept, or model, of how they
were formed. Thus, during mapping, this model enables the soil scientist to predict
with a considerable degree of accuracy the kind of soil or miscellaneous area at a
specific location on the landscape.
Commonly, individual soils on the landscape merge into one another as their
characteristics gradually change. To construct an accurate soil map, however, soil
scientists must determine the boundaries between the soils. They can observe only
a limited number of soil profiles. Nevertheless, these observations, supplemented
by an understanding of the soil-vegetation-landscape relationship, are sufficient to
verify predictions of the kinds of soil in an area and to determine the boundaries.
Soil scientists recorded the characteristics of the soil profiles that they studied. They
noted soil color, texture, size and shape of soil aggregates, kind and amount of rock
fragments, distribution of plant roots, reaction, and other features that enable them
to identify soils. After describing the soils in the survey area and determining their
properties, the soil scientists assigned the soils to taxonomic classes (units).
Taxonomic classes are concepts. Each taxonomic class has a set of soil
characteristics with precisely defined limits. The classes are used as a basis for
comparison to classify soils systematically. Soil taxonomy, the system of taxonomic
classification used in the United States, is based mainly on the kind and character
of soil properties and the arrangement of horizons within the profile. After the soil
5
scientists classified and named the soils in the survey area, they compared the
individual soils with similar soils in the same taxonomic class in other areas so that
they could confirm data and assemble additional data based on experience and
research.
The objective of soil mapping is not to delineate pure map unit components; the
objective is to separate the landscape into landforms or landform segments that
have similar use and management requirements. Each map unit is defined by a
unique combination of soil components and/or miscellaneous areas in predictable
proportions. Some components may be highly contrasting to the other components
of the map unit. The presence of minor components in a map unit in no way
diminishes the usefulness or accuracy of the data. The delineation of such
landforms and landform segments on the map provides sufficient information for the
development of resource plans. If intensive use of small areas is planned, onsite
investigation is needed to define and locate the soils and miscellaneous areas.
Soil scientists make many field observations in the process of producing a soil map.
The frequency of observation is dependent upon several factors, including scale of
mapping, intensity of mapping, design of map units, complexity of the landscape,
and experience of the soil scientist. Observations are made to test and refine the
soil-landscape model and predictions and to verify the classification of the soils at
specific locations. Once the soil-landscape model is refined, a significantly smaller
number of measurements of individual soil properties are made and recorded.
These measurements may include field measurements, such as those for color,
depth to bedrock, and texture, and laboratory measurements, such as those for
content of sand, silt, clay, salt, and other components. Properties of each soil
typically vary from one point to another across the landscape.
Observations for map unit components are aggregated to develop ranges of
characteristics for the components. The aggregated values are presented. Direct
measurements do not exist for every property presented for every map unit
component. Values for some properties are estimated from combinations of other
properties.
While a soil survey is in progress, samples of some of the soils in the area generally
are collected for laboratory analyses and for engineering tests. Soil scientists
interpret the data from these analyses and tests as well as the field-observed
characteristics and the soil properties to determine the expected behavior of the
soils under different uses. Interpretations for all of the soils are field tested through
observation of the soils in different uses and under different levels of management.
Some interpretations are modified to fit local conditions, and some new
interpretations are developed to meet local needs. Data are assembled from other
sources, such as research information, production records, and field experience of
specialists. For example, data on crop yields under defined levels of management
are assembled from farm records and from field or plot experiments on the same
kinds of soil.
Predictions about soil behavior are based not only on soil properties but also on
such variables as climate and biological activity. Soil conditions are predictable over
long periods of time, but they are not predictable from year to year. For example,
soil scientists can predict with a fairly high degree of accuracy that a given soil will
have a high water table within certain depths in most years, but they cannot predict
that a high water table will always be at a specific level in the soil on a specific date.
After soil scientists located and identified the significant natural bodies of soil in the
survey area, they drew the boundaries of these bodies on aerial photographs and
Custom Soil Resource Report
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identified each as a specific map unit. Aerial photographs show trees, buildings,
fields, roads, and rivers, all of which help in locating boundaries accurately.
Custom Soil Resource Report
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Soil Map
The soil map section includes the soil map for the defined area of interest, a list of
soil map units on the map and extent of each map unit, and cartographic symbols
displayed on the map. Also presented are various metadata about data used to
produce the map, and a description of each soil map unit.
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Custom Soil Resource Report
Soil Map
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598690 598700 598710 598720 598730 598740 598750 598760 598770 598780
598690 598700 598710 598720 598730 598740 598750 598760 598770 598780
43° 4' 39'' N
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43° 4' 39'' N
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43° 4' 37'' N
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43° 4' 37'' N
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Map projection: Web Mercator Corner coordinates: WGS84 Edge tics: UTM Zone 18N WGS84
0 20 40 80 120
Feet
0 5 10 20 30
Meters
Map Scale: 1:467 if printed on A landscape (11" x 8.5") sheet.
Soil Map may not be valid at this scale.
MAP LEGEND MAP INFORMATION
Area of Interest (AOI)
Area of Interest (AOI)
Soils
Soil Map Unit Polygons
Soil Map Unit Lines
Soil Map Unit Points
Special Point Features
Blowout
Borrow Pit
Clay Spot
Closed Depression
Gravel Pit
Gravelly Spot
Landfill
Lava Flow
Marsh or swamp
Mine or Quarry
Miscellaneous Water
Perennial Water
Rock Outcrop
Saline Spot
Sandy Spot
Severely Eroded Spot
Sinkhole
Slide or Slip
Sodic Spot
Spoil Area
Stony Spot
Very Stony Spot
Wet Spot
Other
Special Line Features
Water Features
Streams and Canals
Transportation
Rails
Interstate Highways
US Routes
Major Roads
Local Roads
Background
Aerial Photography
The soil surveys that comprise your AOI were mapped at
1:24,000.
Warning: Soil Map may not be valid at this scale.
Enlargement of maps beyond the scale of mapping can cause
misunderstanding of the detail of mapping and accuracy of soil
line placement. The maps do not show the small areas of
contrasting soils that could have been shown at a more detailed
scale.
Please rely on the bar scale on each map sheet for map
measurements.
Source of Map: Natural Resources Conservation Service
Web Soil Survey URL:
Coordinate System: Web Mercator (EPSG:3857)
Maps from the Web Soil Survey are based on the Web Mercator
projection, which preserves direction and shape but distorts
distance and area. A projection that preserves area, such as the
Albers equal-area conic projection, should be used if more
accurate calculations of distance or area are required.
This product is generated from the USDA-NRCS certified data as
of the version date(s) listed below.
Soil Survey Area: Saratoga County, New York
Survey Area Data: Version 25, Sep 2, 2025
Soil map units are labeled (as space allows) for map scales
1:50,000 or larger.
Date(s) aerial images were photographed: Sep 9, 2022—Oct 22,
2022
The orthophoto or other base map on which the soil lines were
compiled and digitized probably differs from the background
imagery displayed on these maps. As a result, some minor
shifting of map unit boundaries may be evident.
Custom Soil Resource Report
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Map Unit Legend
Map Unit Symbol Map Unit Name Acres in AOI Percent of AOI
WnB Windsor loamy sand, 3 to 8
percent slopes
0.6 100.0%
Totals for Area of Interest 0.6 100.0%
Map Unit Descriptions
The map units delineated on the detailed soil maps in a soil survey represent the
soils or miscellaneous areas in the survey area. The map unit descriptions, along
with the maps, can be used to determine the composition and properties of a unit.
A map unit delineation on a soil map represents an area dominated by one or more
major kinds of soil or miscellaneous areas. A map unit is identified and named
according to the taxonomic classification of the dominant soils. Within a taxonomic
class there are precisely defined limits for the properties of the soils. On the
landscape, however, the soils are natural phenomena, and they have the
characteristic variability of all natural phenomena. Thus, the range of some
observed properties may extend beyond the limits defined for a taxonomic class.
Areas of soils of a single taxonomic class rarely, if ever, can be mapped without
including areas of other taxonomic classes. Consequently, every map unit is made
up of the soils or miscellaneous areas for which it is named and some minor
components that belong to taxonomic classes other than those of the major soils.
Most minor soils have properties similar to those of the dominant soil or soils in the
map unit, and thus they do not affect use and management. These are called
noncontrasting, or similar, components. They may or may not be mentioned in a
particular map unit description. Other minor components, however, have properties
and behavioral characteristics divergent enough to affect use or to require different
management. These are called contrasting, or dissimilar, components. They
generally are in small areas and could not be mapped separately because of the
scale used. Some small areas of strongly contrasting soils or miscellaneous areas
are identified by a special symbol on the maps. If included in the database for a
given area, the contrasting minor components are identified in the map unit
descriptions along with some characteristics of each. A few areas of minor
components may not have been observed, and consequently they are not
mentioned in the descriptions, especially where the pattern was so complex that it
was impractical to make enough observations to identify all the soils and
miscellaneous areas on the landscape.
The presence of minor components in a map unit in no way diminishes the
usefulness or accuracy of the data. The objective of mapping is not to delineate
pure taxonomic classes but rather to separate the landscape into landforms or
landform segments that have similar use and management requirements. The
delineation of such segments on the map provides sufficient information for the
development of resource plans. If intensive use of small areas is planned, however,
onsite investigation is needed to define and locate the soils and miscellaneous
areas.
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An identifying symbol precedes the map unit name in the map unit descriptions.
Each description includes general facts about the unit and gives important soil
properties and qualities.
Soils that have profiles that are almost alike make up a soil series. Except for
differences in texture of the surface layer, all the soils of a series have major
horizons that are similar in composition, thickness, and arrangement.
Soils of one series can differ in texture of the surface layer, slope, stoniness,
salinity, degree of erosion, and other characteristics that affect their use. On the
basis of such differences, a soil series is divided into soil phases. Most of the areas
shown on the detailed soil maps are phases of soil series. The name of a soil phase
commonly indicates a feature that affects use or management. For example, Alpha
silt loam, 0 to 2 percent slopes, is a phase of the Alpha series.
Some map units are made up of two or more major soils or miscellaneous areas.
These map units are complexes, associations, or undifferentiated groups.
A complex consists of two or more soils or miscellaneous areas in such an intricate
pattern or in such small areas that they cannot be shown separately on the maps.
The pattern and proportion of the soils or miscellaneous areas are somewhat similar
in all areas. Alpha-Beta complex, 0 to 6 percent slopes, is an example.
An association is made up of two or more geographically associated soils or
miscellaneous areas that are shown as one unit on the maps. Because of present
or anticipated uses of the map units in the survey area, it was not considered
practical or necessary to map the soils or miscellaneous areas separately. The
pattern and relative proportion of the soils or miscellaneous areas are somewhat
similar. Alpha-Beta association, 0 to 2 percent slopes, is an example.
An undifferentiated group is made up of two or more soils or miscellaneous areas
that could be mapped individually but are mapped as one unit because similar
interpretations can be made for use and management. The pattern and proportion
of the soils or miscellaneous areas in a mapped area are not uniform. An area can
be made up of only one of the major soils or miscellaneous areas, or it can be made
up of all of them. Alpha and Beta soils, 0 to 2 percent slopes, is an example.
Some surveys include miscellaneous areas. Such areas have little or no soil
material and support little or no vegetation. Rock outcrop is an example.
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Saratoga County, New York
WnB—Windsor loamy sand, 3 to 8 percent slopes
Map Unit Setting
National map unit symbol: 2svkf
Landscape: Valleys
Elevation: 0 to 1,210 feet
Mean annual precipitation: 36 to 71 inches
Mean annual air temperature: 39 to 55 degrees F
Frost-free period: 140 to 250 days
Farmland classification: Farmland of statewide importance
Map Unit Composition
Windsor and similar soils: 85 percent
Minor components: 15 percent
Estimates are based on observations, descriptions, and transects of the mapunit.
Description of Windsor
Setting
Landscape: Valleys
Landform: Outwash terraces
Landform position (three-dimensional): Tread
Down-slope shape: Linear
Across-slope shape: Linear
Parent material: Loose sandy glaciofluvial deposits derived from granite and/or
schist and/or gneiss
Typical profile
Oe - 0 to 1 inches: moderately decomposed plant material
A - 1 to 3 inches: loamy sand
Bw - 3 to 25 inches: loamy sand
C - 25 to 65 inches: sand
Properties and qualities
Slope: 3 to 8 percent
Depth to restrictive feature: More than 80 inches
Drainage class: Excessively drained
Runoff class: Negligible
Capacity of the most limiting layer to transmit water (Ksat): Moderately high to
very high (1.42 to 99.90 in/hr)
Depth to water table: More than 80 inches
Frequency of flooding: None
Frequency of ponding: None
Maximum salinity: Nonsaline to very slightly saline (0.0 to 2.0 mmhos/cm)
Available water supply, 0 to 60 inches: Low (about 4.5 inches)
Interpretive groups
Land capability classification (irrigated): None specified
Land capability classification (nonirrigated): 2s
Hydrologic Soil Group: A
Ecological site: F145XY008MA - Dry Outwash
Hydric soil rating: No
Custom Soil Resource Report
13
Minor Components
Hinckley
Percent of map unit: 10 percent
Landscape: Valleys
Landform: Eskers
Landform position (three-dimensional): Side slope
Down-slope shape: Convex
Across-slope shape: Convex
Ecological site: F145XY008MA - Dry Outwash
Hydric soil rating: No
Deerfield, loamy sand
Percent of map unit: 5 percent
Landscape: Valleys
Landform: Kame terraces
Landform position (three-dimensional): Tread
Down-slope shape: Linear
Across-slope shape: Linear
Ecological site: F144AY027MA - Moist Sandy Outwash
Hydric soil rating: No
Custom Soil Resource Report
14
References
American Association of State Highway and Transportation Officials (AASHTO).
2004. Standard specifications for transportation materials and methods of sampling
and testing. 24th edition.
American Society for Testing and Materials (ASTM). 2005. Standard classification of
soils for engineering purposes. ASTM Standard D2487-00.
Cowardin, L.M., V. Carter, F.C. Golet, and E.T. LaRoe. 1979. Classification of
wetlands and deep-water habitats of the United States. U.S. Fish and Wildlife
Service FWS/OBS-79/31.
Federal Register. July 13, 1994. Changes in hydric soils of the United States.
Federal Register. September 18, 2002. Hydric soils of the United States.
Hurt, G.W., and L.M. Vasilas, editors. Version 6.0, 2006. Field indicators of hydric
soils in the United States.
National Research Council. 1995. Wetlands: Characteristics and boundaries.
Soil Survey Division Staff. 1993. Soil survey manual. Soil Conservation Service.
U.S. Department of Agriculture Handbook 18. http://www.nrcs.usda.gov/wps/portal/
nrcs/detail/national/soils/?cid=nrcs142p2_054262
Soil Survey Staff. 1999. Soil taxonomy: A basic system of soil classification for
making and interpreting soil surveys. 2nd edition. Natural Resources Conservation
Service, U.S. Department of Agriculture Handbook 436. http://
www.nrcs.usda.gov/wps/portal/nrcs/detail/national/soils/?cid=nrcs142p2_053577
Soil Survey Staff. 2010. Keys to soil taxonomy. 11th edition. U.S. Department of
Agriculture, Natural Resources Conservation Service. http://
www.nrcs.usda.gov/wps/portal/nrcs/detail/national/soils/?cid=nrcs142p2_053580
Tiner, R.W., Jr. 1985. Wetlands of Delaware. U.S. Fish and Wildlife Service and
Delaware Department of Natural Resources and Environmental Control, Wetlands
Section.
United States Army Corps of Engineers, Environmental Laboratory. 1987. Corps of
Engineers wetlands delineation manual. Waterways Experiment Station Technical
Report Y-87-1.
United States Department of Agriculture, Natural Resources Conservation Service.
National forestry manual. http://www.nrcs.usda.gov/wps/portal/nrcs/detail/soils/
home/?cid=nrcs142p2_053374
United States Department of Agriculture, Natural Resources Conservation Service.
National range and pasture handbook. http://www.nrcs.usda.gov/wps/portal/nrcs/
detail/national/landuse/rangepasture/?cid=stelprdb1043084
15
United States Department of Agriculture, Natural Resources Conservation Service.
National soil survey handbook, title 430-VI. http://www.nrcs.usda.gov/wps/portal/
nrcs/detail/soils/scientists/?cid=nrcs142p2_054242
United States Department of Agriculture, Natural Resources Conservation Service.
2006. Land resource regions and major land resource areas of the United States,
the Caribbean, and the Pacific Basin. U.S. Department of Agriculture Handbook
296. http://www.nrcs.usda.gov/wps/portal/nrcs/detail/national/soils/?
cid=nrcs142p2_053624
United States Department of Agriculture, Soil Conservation Service. 1961. Land
capability classification. U.S. Department of Agriculture Handbook 210. http://
www.nrcs.usda.gov/Internet/FSE_DOCUMENTS/nrcs142p2_052290.pdf
Custom Soil Resource Report
16
APPENDIX C STORMWATER PRACTICE LOCATION MAP
SANSANSANSAN
on 24" x 36" sheet
GRAPHIC SCALE
5 10 20010
1 inch = 10 feet
SA
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8/
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_
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d
w
g
PL
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D
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:
CL
O
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M
A
N
DE
S
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DR
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CH
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##
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STORMWATER LAYOUT
PLAN OPT. 1
SW-1
5
DRAWING NO.
PROJECT NO.
PROJECT
DRAWING TITLE
DATE:
REVISIONS
DATE DESCRIPTION
IT IS A VIOLATION OF NEW YORK STATE EDUCATION LAW FOR ANY PERSON,
UNLESS THEY ARE ACTING UNDER THE DIRECTION OF A LICENSED
PROFESSIONAL ENGINEER, ARCHITECT, LANDSCAPE ARCHITECT, OR LAND
SURVEYOR, TO ALTER ANY ITEM IN ANY WAY. IF AN ITEM BEARING THE STAMP
OF A LICENSED PROFESSIONAL IS ALTERED, THE ALTERING LICENSED
PROFESSIONAL SHALL STAMP THE DOCUMENT AND INCLUDE THE NOTATION
"ALTERED BY" FOLLOWED BY THEIR SIGNATURE, THE DATE OF SUCH
ALTERNATION, AND SPECIFIC DESCRIPTION OF THE ALTERATION.
08/13/2026
DRAWINGS
NOT FOR
CONSTRUCTION
DWG OF 20
PREPARED FOR
DIG SAFE NOTE:
THIS PLAN SET WAS DRAFTED WITHOUT THE BENEFIT OF
"DIG SAFE" MARKINGS. UTILITIES SHOWN ARE NOT
WARRANTED TO BE EXACT OR COMPLETE. THE
CONTRACTOR SHALL CONTACT "DIG SAFE" AT 811 BEFORE
COMMENCING ANY WORK AND SHALL PRESERVE EXISTING
UTILITIES WHICH ARE NOT SPECIFIED TO BE REMOVED IN
THIS PLAN SET.
MAP INFORMATION:
BASE MAP INFORMATION OBTAINED FROM A DRAWING
TITLED "269 BROADWAY SURVEY" BY THOMPSON FLEMING
LAND SURVEYORS P.C. ON JAN. 17, 2017.
74 Warren Street, Suite 1
Saratoga Springs, NY 12866
518.450.4030
TRUST| QUALITY
COLLABORATION | INNOVATION
north
26024
269 BROADWAY SARATOGA, LLC
395 BROADWAY
SARATOGA SPRINGS, NY 12866
269 BROADWAY
PERMITS & APPROVALS8/13/26
GROUND LEVEL GREEN ROOF
FILTER MEDIA DEPTH: 2 FT.
TOTAL AREA: 1,405 SQFT
TOTAL RRv PROV.: 843 CF
GROUND LEVEL PERMEABLE PAVERS
STONE RESEVIOR DEPTH: 2 FT.
TOTAL AREA: 245 SQFT
TOTAL RRv PROV.: 78 CF
40 VOIDS
GROUND LEVEL TREE PITS
TOTAL AREA: 6.5 FT X 7.5 FT
MATURE TREE CANOPY: >16 FT. Ø
TOTAL RRv PROV.: 108 CF
SUMMARY:
TOTAL GROUND FLOOR RRv PROV.: 1,382 CF
TOTAL ROOF RRv PROV.: 774 CF
TOTAL RRv PROV.: 2,156 CF
RRv REQ'D: 1,596 CF < 2,235 CF
1 GROUND FLOOR PLAN VIEW
SCALE: 1" = 10'-0"
2 ROOFTOP PLAN VIEW
SCALE: 1" = 10'-0"
UPPER LEVEL STORMWATER PLANTERS
TOTAL AREA: 513 SQFT
2.5'H PLANTER RRv PROV.: 479 CF
UPPER LEVEL PERMEABLE PAVERS
DEPTH OF RESERVOIR: 6 INCHES
TOTAL AREA: 1205 SQFT
TOTAL RRv PROV.: 241 CF
100 VOIDS
UPPER LEVEL MOVEABLE TREE PLANTERS
TOTAL AREA: 3 FT X 3 FT
MATURE TREE CANOPY: 6 FT. Ø
TOTAL RRv PROV.: 10 CF
LOWER LEVEL STORMWATER PLANTER IN WALL
TOTAL AREA: 95 SQFT
2.5'H PLANTER RRv PROV.: 89 CF
GROUND LEVEL GREEN ROOF
FILTER MEDIA DEPTH: 0.5 FT.
TOTAL AREA: 262 SQFT
TOTAL RRv PROV.: 44 CF
INFILTRATION CHAMBERS
TOTAL CHAMBERS: 9 CHAMBERS
RRv PROV.: 264 CF
APPENDIX D STORMWATER CALCULATIONS
26024-PG Broadway Green Infrastrucure Calculations
Value Value
cf af
28 1,596 0.037
30 2,156 0.049
31
32 1,081 0.025
32a
33a 0 0.000
34 2,156 0.049
35
Req'd Provided
af af
36 0.000 0.049
Pre Post
cfs cfs
37 - -
38 - -
yes
yes
yes
Total
WQv Req'd
WQv + RRv >
WQv Req'd
WQv Prov. +
RRv Prov.
Total
WQv Prov.
RRv Prov. >
Min. RRv
NO
I
S
U
M
M
A
R
Y
Question#
Min. RRv
RRv. Prov. >
WQv Req'd
Total
RRv Prov.
Qf
Overbank
CPv
26024-PG Broadway Green Infrastrucure Calculations
P = 1.1 in.
Total
Area
Imp.
Area
Percent
Imp.Rv WQv
Req'd
SMP
Description
DP-ID ac. ac. cf
1 0.324 0.324 100% 0.95 1228 -
2 0.194 0.194 100% 0.95 369 -*existing imp. WQv reduced by 50% per UDO
3 - 0.000 - - - -
4 - 0.000 - - - -
5 - 0.000 - - - -
6 - 0.000 - - - -
7 - 0.000 - - - -
8 - 0.000 - - - -
9 - 0.000 - - - -
10 - 0.000 - - - -
11 - 0.000 - - - -
12 - 0.000 - - - -
13 - 0.000 - - - -
Total 0.518 0.518 100% 0.95 1596
Soil Group Area S
A 0.52 55%
B 0.00 40%
C 0.00 30%
D 0.00 20%
Total 0.52 55%
SO
I
L
S
D
A
T
A
W
A
T
E
R
Q
U
A
L
I
T
Y
V
O
L
U
M
E
Proposed Imp.
26024-PG Broadway Green Infrastrucure Calculations
GI Practice Total
Area
Total Imp.
Area RRv Prov.WQv
Treated
ac. ac. cf cf
IF-1 0.000 0.000 0 0
IF-2 0.000 0.000 0 0
IF-4 0.000 0.000 264 0
F-4 0.000 0.000 0 0
F-5 0.000 0.000 0 0
W-5 0.000 0.000 - 0
P-1 0.000 0.000 - 0
RR-1 0.000 0.000 0 -
RR-3 0.324 21.324 119 -
RR-4 0.000 0.000 0 -
RR-5 0.000 0.000 0 -
RR-7 0.000 0.000 567 -
RR-9 0.000 0.000 319 -
RR-10 0.000 0.000 887 -
Total 2,156 0
PR
A
C
T
I
C
E
S
U
M
M
A
R
Y
SMPs w/ RRv Capacity
Standard SMPs
RRv Techniques
Tree Pit (RR-3)
Hamilton St.
Total
Area
Imp.
Area
Percent
Imp.Rv WQv P
ac ac cf in
1 0.32 0.32 100% 0.95 1228 1.1
Yes 40% RRv provided
Mature Tree Canopy 16
Qty of Trees 2
Area to be subtracted 200.0
Total
Area
Imp.
Area
Percent
Imp.Rv WQv
0.32 0.32 100%0.95 1228
0.00
0.32 0.32 0.95 1210
Filter Media Depth 3 ft
Permeability Rate 1 ft/day
Avg. Ht. of Ponding 0.5 ft
Max. Drain Time 2 days
97 sf
526.08 sf
WQv Provided 226 cf
RRv - Area Reduction 17 cf
RRv - Vol. Reduction 91 cf
Practice ID:
Subcatchment Data
SC-ID
Design Criteria
Volume Reduction
Underdrains Provided?
Area Reduction Criteria
Runoff Reduction
Site Totals
Subtract Area Reduced
Area Reduction Calcs
area reduction shall be 100 sqft/tree
Area Reduction WQv
Filter Area
Req'd Area
0.5 ft. max
Tree Pit (RR-3)
Upper Level
Total
Area
Imp.
Area
Percent
Imp.Rv WQv P
ac ac cf in
1 0.32 0.32 1.00 0.95 1228 1.1
Yes 40% RRv provided
Mature Tree Canopy 6
Qty of Trees 2
Area to be subtracted 28.3
Total
Area
Imp.
Area
Percent
Imp.Rv WQv
0.32 0.32 100%0.95 1228
0.00
0.32 0.32 0.95 1225
Filter Media Depth 3 ft
Permeability Rate 1 ft/day
Avg. Ht. of Ponding 0.5 ft
Max. Drain Time 2 days
9 sf
526.08 sf
WQv Provided 21 cf
RRv - Area Reduction 2 cf
RRv - Vol. Reduction 8 cf
Practice ID:
Subcatchment Data
SC-ID
Design Criteria
Underdrains Provided?
Area Reduction Criteria
area reduction shall be half of the canopy area
Area Reduction Calcs
Site Totals
Subtract Area Reduced
Area Reduction WQv
Volume Reduction
0.5 ft. max
Filter Area
Req'd Area
Runoff Reduction
Stormwater Planters (RR-7)
Upper Level
Total
Area
Imp.
Area
Percent
Imp.Rv WQv P
ac ac cf in
1.1
Yes
Filter Media Depth 1.5 ft
Permeability Rate 1 ft/day
Avg. Ht. of Ponding 0.25 ft
Max. Drain Time 2 days
513 sf
sf
1197 cf
479 cf
Lower Level
Total
Area
Imp.
Area
Percent
Imp.Rv WQv P
ac ac cf in
1.1
Yes
Filter Media Depth 1.5 ft
Permeability Rate 1 ft/day
Avg. Ht. of Ponding 0.25 ft
Max. Drain Time 2 days
95 sf
sf
222 cf
89 cfRRv
Req'd Area
Runoff Reduction
0.5 ft. max
1.5 - 2.5 ft. max.
Filter Area
WQv Provided
Practice ID:
Subcatchment Data
Design Criteria
Basin Sizing
SC-ID
Underdrains Provided?
40% RRv provided
0.5 ft. max
Filter Area
Req'd Area
RRv
WQv Provided
Runoff Reduction
Practice ID:
Subcatchment Data
SC-ID
Design Criteria
Underdrains Provided?
40% RRv provided
Basin Sizing
1.5 - 2.5 ft. max.
Permeable Pavement (RR-9)
Ground Level
Total
Area
Imp.
Area
Percent
Imp.Rv WQv P
ac ac cf in
1.1
yes
Surface Area 245 sqft
Depth of Stone Resevior 2.00 ft.
Stone Porosity 40%
196
78 cf
Upper Level
Total
Area
Imp.
Area
Percent
Imp.Rv WQv P
ac ac cf in
1.1
yes
Surface Area 1205 sqft
Depth of Stone Resevior 0.50 ft.
Stone Porosity 100%*pavers on pedestal with 100% voids
603
241 cf
Total
Area
Imp.
Area
Percent
Imp.Rv WQv P
ac ac cf in
1.1
Surface Area sqft
Depth of Stone Resevior ft.
Stone Porosity 0.40
cf
Practice ID:
Subcatchment Data
SC-ID
Practice ID:
Subcatchment Data
SC-ID
Design Criteria
Underdrains?40% RRv provided
WQv
Runoff Reduction
RRv
Underdrains?40% RRv provided
Design Criteria
Underdrains?
RRv
Practice ID:
WQv
Runoff Reduction
RRv
WQv
Runoff Reduction
Subcatchment Data
SC-ID
Design Criteria
Green Roof (RR-10)
Ground Level
Total
Area
Imp.
Area
Percent
Imp.Rv WQv P
ac ac cf in
1.1
Intensive
Surface Area 1405 sqft
Depth of Soil Media 2.00 ft.
Depth of Drainage Area 0.50 ft.
Porosity of Soil Media 0.2
0.4
843
843 cf
Total
Area
Imp.
Area
Percent
Imp.Rv WQv P
ac ac cf in
1.1
Intensive
Surface Area 262 sqft
Depth of Soil Media 0.50 ft.
Depth of Drainage Area 0.17 ft.
Porosity of Soil Media 0.2
0.4
44
44 cf
Total
Area
Imp.
Area
Percent
Imp.Rv WQv P
ac ac cf in
1.1
Surface Area sqft
Depth of Soil Media ft.
Depth of Drainage Area ft.
Porosity of Soil Media 0.2
0.4
cf
Practice ID:
Subcatchment Data
SC-ID
Design Criteria
soil media shall be 6 - 24 inches thick
Green Roof Type
SC-ID
Porosity of Drainage
WQv
Subcatchment Data
Runoff Reduction
RRv
Practice ID:
Subcatchment Data
SC-ID
Design Criteria
Green Roof Type
RRv
3815
Porosity of Drainage
WQv
Runoff Reduction
Green Roof Type
soil media shall be 6 - 24 inches thick
Porosity of Drainage
WQv
Runoff Reduction
RRv
Practice ID:
Design Criteria
Infiltration Chamber (IF-4)
Total
Area
Imp.
Area
Percent
Imp.Rv WQv P
ac ac cf in
1.1
in./hr.
-WQv
-cf
cf
0.5 ft
sf
Vol. of Stone 131.4 cf
Vol. of Chamber 132.3 cf
264 cf
0 cf
Are sizing req. met?
Total
Area
Imp.
Area
Percent
Imp.Rv WQv P
ac ac cf in
1.1
in./hr.
-WQv
-cf
cf
ft
sf
Vol. of Stone cf see hydrocad
Vol. of Chamber sf see hydrocad
0 cf
0 cf
RRv 100% of basin vol. or WQV req'd
Provided Pretreatment Vol.
Surface Area Req'd
Runoff Reduction
depth of stone
RRv 100% of basin vol. or WQV req'd
Are sizing req. met?
WQv Treated vol. not reduced
Practice ID:
Subcatchment Data
SC-ID
Pretreatment
In-situ soil infiltration rate
Subcatchment Data
Pretreatment
Basin Sizing
Practice ID:
WQv Treated vol. not reduced
SC-ID
In-situ soil infiltration rate
Surface Area Req'd
Pretreatment Sizing
Req'd Pretreatment Vol.
Provided Pretreatment Vol.
Basin Sizing
depth of stone
Pretreatment Sizing
Req'd Pretreatment Vol.
Runoff Reduction
APPENDIX E STORMWATER CONTROL FACILITY MAINTENANCE
AGREEMENT (DRAFT INCLUDED, TO BE SIGNED IN FINAL
SWPPP)
___________________________ ____________________________
APPENDIX F O&M MANUAL
SW 5. Outlets
Description: These are where water leaves the swale when it fills up or where water reaches the downstream end of the
swale. There may be a small stone apron or rock dam here or even an outlet grate.
Instruction: Examine outlets that release water out of the swale. Consult Table 2.5.5 below for possible problems.
Table 2.5.5 SW Outlets
Problem (Check if Present) Follow-Up Actions
Outlet is obstructed with mulch, sediment,
debris, trash, etc.
Remove the debris and dispose of it where it cannot re-enter the swale.
Other:
Kick-Out to Level 2 Inspection: Outlet is completely clogged or obstructed;
there is too much material to remove by hand or with simple hand tools.
2.6. Tree Planting
Tree Planting Actions for Maintenance
Key actions to take for tree planting maintenance include the following:
TP1. Watering
TP2. Mulch
TP3. Pruning
TP4. Disease or pests
Note: This is a simple, “non-structural” practice and, as such,
maintenance tasks are similar to any landscape maintenance. Tree
planting can involve individual trees or more, such as reforesting a
riparian buffer.
For this type of practice, inspection is part of maintenance to check
on the health of the trees.
Tree Planting Level 1 Inspection
The Level 1 Inspection goes hand in hand with active
maintenance and includes watering (TP1), mulching (TP2),
and Pruning (TP3). Watering should occur during the
growing season. Mulching and pruning occurs once a year
in the spring and early spring, respectively.
TP 1. Watering
Description: Proper water management is perhaps the most crucial maintenance activity to ensure survival of newly
planted trees. Watering is essential during periods of drought, while over watering can be fatal. Watering options
include regular or soaker hoses, sprinklers, buckets, drip irrigation, or installation of larger capacity watering tanks for
irrigation systems. Consult the maintenance plan for instructions on the timing, volume, and method of watering that is
appropriate for the specific species of trees.
Instruction: Inspect the trees to determine whether they need watering. Consult Table 2.6.1 below.
Figure 2.6.1. Key Areas for Inspection and
Maintenance for Tree Planting
Table 2.6.1 TP Watering
Problem (Check if Present)
Soil is not moist to the touch and/or it has not
rained in a week, and leaves/needles are starting
to appear wilted/dry.
Follow-Up Actions
Water trees deeply and slowly near the base. Soaker hoses and drip
irrigation work best for deep watering of trees and shrubs.
Other:
Maintenance Guidance 21
TP 2. Mulch
Description: Mulching is a common method of weed control and moisture retention. Organic mulch should be spread over
the soil surface and extend out to a radius of 5 feet or the tree drip line, whichever is less. Slowly decomposing organic
mulches, such as shredded bark, compost, leaf mulch, or wood chips provide many added benefits for trees. Mulch that
contains a combination of chips, leaves, bark and twigs is ideal for reforestation sites. Consult the maintenance plan for
instructions on the timing, depth, and type of mulch application needed for the specific species of trees present.
Instruction: Mulch should be applied twice per year—in the late spring and during leaf fall. Consult the table below for
possible problems. Check the depth of mulch regularly. Rake the old mulch to break up any matted layers and to refresh
the appearance. Consult Table 2.6.2 below.
Table 2.6.2 TP Mulch
Problem (Check if Present)
Mulch is too thin or thick (should be
approximately 3" deep) or does not extend to tree
canopy (or 5' radius if tree has a larger than 10'
canopy reach).
Follow-Up Actions
Add or remove mulch around tree canopy to maximum 5' radius but not
within 3" of the bark.
If mulch is against the stems or tree trunks, pull it back several inches
to expose the base of the trunk and root crown.
Other:
TP 3. Pruning
Description: Pruning is usually not needed for newly planted trees but may be beneficial for tree structure in older trees. If
necessary, prune only dead, diseased, broken or crossing branches at planting. As the tree grows, lower branches may
be pruned to provide clearance above the ground or to remove dead or damaged limbs that sprout from the trunk.
Instruction: Examine the branches and tree shape. Consult Table 2.6.3 below for possible problems.
Table 2.6.3 TP Pruning
Problem (Check if Present) Follow-Up Actions
Presence of suckers, dead or diseased
branches, branches that interfere with
pedestrian traffic
Selective cutting
Prune to make the tree more aesthetically pleasing and
remove disease.
Other:
Kick-Out to Level 2 Inspection: Use an arborist or landscaper for
more extensive pruning jobs.
Maintenance Guidance 22
BR 5. Outlets
Description: Outlets are where water leaves the Bioretention cell when there is too much ponded water. There are various
ways that outlets are configured. They can be a yard drain type of structure in the Bioretention cell itself or a rock weir
where water flows during large storms. Many Bioretention practices have an underdrain, which is like a French drain, that
helps the Bioretention cell drain properly after storms. The underdrain pipe may “daylight” (come to the ground surface) at
some point downhill from the Bioretention cell.
Instruction: Examine outlets that release water out of the Bioretention cell. Consult the table below for possible problems.
Table 2.7.5 BR Outlets
Problem (Check if Present) Follow-Up Actions
Erosion at outlet
Add stone to reduce the impact from the water flowing out of the outlet pipe or
weir during storms.
Other:
Kick-Out to Level 2 Inspection: Rills have formed and erosion problem
becomes more severe.
Remove the debris and dispose of it where it cannot re-enter the
Bioretention cell.
Other:
Outlet obstructed with mulch, sediment,
debris, trash, etc.
Kick-Out to Level 2 Inspection: Outlet is completely clogged or obstructed;
there is too much material to remove by hand or with simple hand tools.
2.8. Green Roof
Areas of the Green Roof
Key areas to inspect for green roofs include
the following:
GR 1. Vegetation and Surface
GR 2. Overflows and Drains
Note: Green Roofs consist of green infrastructure
practices applied on rooftops, wherein stormwater
is filtered through a vegetated planting bed. Green
Roofs are a unique practice in that they are often
covered by a professional ongoing maintenance
contract, and their design is highly variable
depending on the specific product. This section
highlights some key inspection items.
Figure 2.8.1. Key Areas for Level 1 Inspection of Green Roof
Maintenance Guidance 30
Green Roof Level 1 Inspection
The Level 1 Inspection focuses on the Vegetation (GR1), Overflows and Drains (GR2), and the Surface and Soil Medium
(GR3). This inspection should be conducted on a regular basis, with an early spring inspection to ensure that the practice
has survived the winter, particularly if there has been a cold year.
On a routine basis, the Level 1 Inspector should also ensure that the vegetation is surviving any harsh roof conditions,
particularly during dry periods.
GR 1. Vegetation and Surface
Description: The green roof vegetation usually consists of succulent plants, such as sedums, and should form a dense
cover over the course of several growing seasons.
Instruction: Visually inspect the surface and vegetation of the practice. Consult Table 2.8.1 below:
Table 2.8.1 GR Vegetation and Surface
Problem (Check if Present) Follow-Up Actions
Water or irrigate.
Prune or remove dead or dying vegetation.
Other:
Kick-Out to Level 2 Inspection: Greater than 20% plant dieoff or wilting, even Wilting or nutrient-deprived vegetation; after rainy periods. May require new vegetation or indicate a problem with the bare areas developing on the roof soil medium.
Kick-Out to Level 2 Inspection: Yellowing vegetation may indicate a need for
fertilizer, but do not fertilize unless explicitly included in the management plan
or with a Level 2 Inspection.
Kick-Out to Level 2 Inspection: Bare areas with no vegetation growing. These
may become weed problems in the future.
Weeds or moss
Remove weeds by hand.
Apply lime to kill moss.
Other:
Kick-Out to Level 2 Inspection: Weeds cover more than 25% of the surface, or
the original planting plan has been compromised.
Ponding between storm events Kick-Out to Level 2 Inspection: Surface ponding more than 24 hours after a
storm event presents a hazard and needs to be addressed immediately.
Maintenance Guidance 31
GR 2. Overflows and Drains
Description: Green roofs typically drain through a network of underdrains to outlet at roof drainage infrastructure. These
drainage structures need to be inspected and cleaned periodically to ensure that the medium drains properly.
Instruction: Review the specific maintenance plan for this practice to determine where inspection ports are. Remove the
cover and inspect the port.
Table 2.8.2 GR Overflows and Drains
Problem (Check if Present) Follow-Up Actions
Inspection port for roof drainage (can be clogged
with debris)
Remove debris by hand or flush through with a hose.
Other:
Kick-Out to Level 2 Inspection: Debris cannot be removed, or it
appears that debris has accumulated in the underdrains.
Damage to other roof drainage structures
(e.g., roof scuppers)
Call contractor or individual in charge of regular building
maintenance. This is a building maintenance issue.
Other:
2.9. Permeable Pavement
Areas of Permeable Pavement
Key areas to inspect for permeable
pavement include the following:
PP1. Drainage Area
PP2. Pavement Surface
Note: Permeable pavements include several
materials, including porous asphalt materials,
which appear similar to an asphalt parking
lot, permeable concrete, and “interlocking
concrete pavers,” which are individual paving
blocks. References to removing and
replacing individual blocks of pavement refer
only to this last category.
Permeable Pavement
Level 1 Inspection Figure 2.9.1. Key Areas for Level 1 Inspection of Permeable Pavement
The Level 1 Inspection focuses on the
Drainage Area (PP1) and the Pavement Surface (PP2). This inspection should be conducted on a regular basis, with an
early spring inspection to ensure that the practice has survived the winter, particularly if there has been a significant
amount of snow.
On a routine basis, the Level 1 Inspector should also ensure that the pavement area and its drainage are properly
managed. Some key activities to avoid include:
1. Applying sand during winter months
2. Certain types of permeable pavement should not be plowed with steel-bladed plows.
3. Poor management of dumpsters
4. Storing or placing dirt, grit, mulch, sand, or other similar materials on or near the pavement surface
Maintenance Guidance 32
PP 1. Drainage Area
Description: The drainage area sends runoff to the Permeable pavement area and is uphill from the Permeable pavement.
When it rains, water runs off and flows to the Permeable pavement area, and it may pond there temporarily.
Instruction: Look for areas that are uphill from the Permeable pavement. Consult Table 2.9.1 below:
Table 2.9.1 PP Drainage Area
Problem (Check if Present) Follow-Up Actions
Bare soil, erosion
of the ground
(rills washing
out the dirt)
Seed and straw areas of bare soil to establish
vegetation.
Fill in erosion areas with soil, compact, and seed and
straw to establish vegetation.
If a rill or small channel is forming, try to redirect
water flowing to this area by creating a small berm or
adding topsoil to areas that are heavily compacted.
Other:
Kick-Out to Level 2 Inspection: Large areas of soil
have been eroded, or larger channels are forming.
May require rerouting of flow paths.
Piles of grass
clippings, mulch,
dirt, salt, or other
materials
Remove or cover piles of grass clippings,
mulch, dirt, etc.
Other:
Open containers Cover or properly dispose of materials; consult your
of oil, grease, local solid waste authority for guidance on materials
paint, or other that may be toxic or hazardous.
substances Other:
Maintenance Guidance 33
PP 2. Permeable Pavement Surface
Description: The surface of the Permeable pavement should be relatively clean (not a lot of dirt and grit on the surface),
free of cracks and broken pavement, and should NOT hold water after a rainstorm for more than a few hours.
Instruction: Examine the entire permeable pavement surface. Consult Table 2.9.2 below for possible problems.
Table 2.9.2 PP Surface
Problem (Check if Present) Follow-Up Actions
Dirt and grit
accumulating on
pavement surface
For small areas (e.g., driveways, patios), try a leaf
blower or sweep the area to remove the dirt/grit from
the Permeable pavement and properly dispose of the
material.
If dirt/grit remain in the joint areas between paver
blocks, agitate with a rough brush and vacuum the
surface with a wet/dry vac.
Remove and replace clogged blocks in segmented
pavers.
For larger areas (e.g., parking lots, courtyards), hire a
vacuum sweeper to restore the surface to a cleaner
condition.
Other:
Kick-Out to Level 2 Inspection: Grit is widespread and
cannot be removed by manual sweeping.
Grass and weeds
are growing on the
permeable
pavement surface
(applies only to
pavement types that
are not intended to
be covered in
vegetation).
If paver type is not intended to be covered in
vegetation, remove the grass/weeds either
mechanically (pulling, by hand or with a flame
weeder) or with a herbicide approved for use in or
near water (consult your local Extension Office
for suggestions).
Follow the actions listed above for removing dirt/grit
from the pavement surface.
Other:
Kick-Out to Level 2 Inspection: Grass/weeds cover
more than 25% of surface area.
Slumping, sinking,
cracking, or breaking
of the pavement
surface
(Source: CSN, 2013)
For small areas (e.g., patios, small driveway), it may
be possible to remove the damaged pavers, check
and fill in the underlying gravel, and replace with new
materials.
Other:
Kick-Out to Level 2 Inspection: Problem affects more
than a small, isolated area. Will typically require a
qualified contractor to fix it.
Problem recurs or occurs in multiple small locations.
Water stands on
Permeable
pavement for days
after a rainstorm; the
Permeable
pavement is clogged
and doesn’t let water
through.
(Source: CSN, 2013)
Kick-Out to Level 2 Inspection: This is generally a
serious problem, and it will be necessary to activate a
Level 2 Inspection.
Maintenance Guidance 34
3.6. Tree Planting – Level 2 Inspections and Triggers for Level 3
A Level 2 Tree Planting inspection should be conducted periodically during the growing season by the Cooperative
Extension or an arborist.
Table 3.6.1 Level 2 Inspection: TREE PLANTING
Recommended Repairs Triggers for Level 3 Inspection
Observed Condition: Appearance of fungus or pest damage
Condition 1: Fungus, discoloration, browning leaves or holes in leaves
Check with arborist or other tree professional about the best way to proceed. This
requires a Level 3 inspection.
Condition 2: Burrowing insects, holes
Check with arborist or other tree professional about the best way to proceed. This
requires a Level 3 inspection.
Any concerns about how to address infestation
or disease
3.7. Bioretention – Level 2 Inspections and Triggers for Level 3
The most likely triggers for a Level 3 Inspection for Bioretention are:
Standing water, clogged media
Vegetation management
Bioretention does not conform to original design plan in surface area or storage.
Severe erosion of filter bed, inlets, or around outlets
Significant sediment accumulation, indicating an uncontrolled source of sediment
Table 3.7.1 Level 2 Inspection: BIORETENTION
NOTE: Key Source for this Information (CSN, 2013)
Recommended Repairs Triggers for Level 3 Inspection
Observed Condition: Water Stands on Surface for More than 72 Hours after Storm
Condition 1: Small pockets of standing water
Use a soil probe or auger to examine the soil profile. If isolated areas have
accumulated grit, fines, or vegetative debris or have bad soil media, try scraping off
top 3 inches of media and replacing with clean material. Also check to see that
surface is level and water is not ponding selectively in certain areas.
Condition 2: Standing water is widespread or covers entire surface
Requires diagnosis and resolution of problem:
Clogged underdrain?
Filter fabric between soil media and underdrain stone?
Need to install underdrain if not present?
Too much sediment/grit washing in from drainage area?
Too much ponding depth?
Improper soil media?
Soil media is clogged and problem is not
evident from Level 2 inspection.
Level 2 inspection identifies problem, but it
cannot be resolved easily or is associated with
the original design of the practice.
Maintenance Guidance 59
3.8. Green Roof – Level 2 Inspections and Triggers for Level 3
The most likely triggers for a Level 3 Inspection for Green Roofs are:
Standing water
Vegetation management
Structural damage
Table 3.8.1 Level 2 Inspection: GREEN ROOF
Recommended Repairs and Required Skills Triggers for Level 3 Inspection
Observed Condition: Unhealthy or Dying Vegetation
Condition 1: Large number of plants dying from wilt
If this is a one-time occurrence, review weather and
landscaping records to see whether the die off seems
reasonable. If so, deeply water immediately, and plant
reinforcements in the spring.
Condition 2: Vegetation is dying and yellowing
For yellowing vegetation, consider testing the media for pH,
nutrient levels, and other factors that may affect growth.
Problems identified would go to a Level 3 inspector (see note
to right).
Ponding continues even after debris has been removed. This may
indicate a problem with either the media or the underdrain system.
More than 25% die off
Plants are unhealthy for a prolonged period of time or need to be
replanted repeatedly, indicating that a new planting plan may be
necessary, or the planting medium is not functioning properly.
pH or other media constituents are not conducive to plant growth,
and the media needs to be amended (e.g., lime, fertilizer). This
should be handled by a green roof vendor or green roof plant
specialist.
Observed Condition: Ponding Between Storm Events or Debris Accumulation
Condition 1: Further inspection shows debris is clogging the
outflow drainpipe
Remove debris by hand and revisit within 24 hours to see
whether this action fixed the problem.
Condition 2: Debris has backed up to include the underdrain
Attempt to remove by hand or flush out with a hose.
Observed Condition: Structural Damage to Overflows
Condition: If the damage is minor, repair damage directly, per
original design drawings
Most instances of structural damage will need to be referred to the
designer or a qualified green roof vendor.
Observed Condition: Roof is Leaking or indication that the membrane has a leak
Any leaks in the membrane trigger a Level 3 inspection or an
inspection by the original installer or designer. Condition: Roof is leaking
Maintenance Guidance 61
3.9. Permeable Pavement – Level 2 Inspections and Triggers for Level 3
The most likely triggers for a Level 3 Inspection for Permeable Pavement are:
Ponding or
Highly clogged pavement
Table 3.9.1 Level 2 Inspection: PERMEABLE PAVEMENT
Recommended Repairs and Required Skills Triggers for Level 3 Inspection
Observed Condition: Bare Soil or Erosion in the Drainage Area
Condition 1: Extensive problem spots, but no channels or rills
forming
Reseed problem areas. If problem persists or grass does not
take, consider hiring a landscape contractor.
Condition 2: Problem is extensive, and rills/channels are
beginning to form
May be necessary to divert or redirect water that is causing
the erosion problem. If it appears that simple regrading—such
as installing a berm or leveling a low spot–will fix the problem,
make repairs and check to ensure that the problem is repaired
after the next storm.
More than 2 inches of sand/dirt/grit are on some of the pavement
surface.
More than 25% of the pavement surface is covered with
sand/dirt/grit to the extent that joints between paver blocks are
filled.
Regenerative air sweeper cannot remove grit.
Large rills or gullies are forming in the drainage area.
An attempt to regrade the drainage area has been unsuccessful
Fixing the problem would require major regrading (i.e.,
redirecting more than a 100-square-foot area.
It is not clear why the problem is occurring.
Observed Condition: Dirt or Grit Accumulating, or Grass Growing on Pavement Surface
Condition 1: Grit beginning to form but is isolated to a small
area or does not fill the joints between paver blocks
Try to agitate and sweep by hand, or hire a contractor with a
vacuum sweeper. Also investigate the drainage area for
potential sediment sources. If no obvious sources are found,
discuss winter sanding and salting operations with the
property owner to identify whether this could be the source.
Condition 2: Grit is forming and cannot be removed with
agitation and hand sweeping
Hire a vendor with a regenerative air vacuum sweeper,
maximum power 2,500 rpm; avoid sweepers that use water.
Observed Condition: Structural Damage
Condition 1: Portions of porous asphalt or permeable pavers
are damaged, and the cause is known to be at the surface.
If the damage is from a single event such as heavy equipment
or heavy fallen objects, or the surface has been damaged by
wear over time, hire a contractor experienced in permeable
pavement installation to repair the damaged areas.
Condition 2: Damage to other structures, such as drainage
infrastructure
If possible, repair or replace damaged items, or hire a
contractor with permeable pavement experience if the
damaged infrastructure is within the pavement surface.
More than 25% of the surface needs to be repaired or replaced.
It appears that the underlying material has “caved in,” indicating
an underlying water conveyance or soil stabilization issue.
Problem is repaired but recurs within less than five years.
Maintenance Guidance 62
Table 3.9.1 Level 2 Inspection: PERMEABLE PAVEMENT
Recommended Repairs and Required Skills Triggers for Level 3 Inspection
Observed Condition: Ponding on the Pavement Surface
Condition 1: Underdrains (if present) may be clogged
Check to see whether underdrains are clogged by inspecting
cleanouts (if present) or catch basins and looking for debris. If
underdrains appear clogged, it may be necessary to hire a
router service to ream out the underdrains.
Condition 2: At time of Level 2 inspection, water is not ponded,
and there is no obvious clogging of the surface.
Conduct a flood test to determine whether the ponding is an
ongoing problem.
Water stands on the pavement surface more than 72 hours after
a storm, and the problem cannot be resolved by unclogging
underdrains.
More than 25% of the pavement surface is covered with
sand/dirt/grit to the extent that joints between paver blocks are
filled.
Figure 3.9.2. A Level 3 investigation is warranted if Figure 3.9.1. Winter salting, sanding, plowing, and
more than 25% of the permeable pavement surface snow storage can cause problems for permeable
appears to be clogged, or joints are filled in, or, as pavement surfaces, which will trigger a Level 3
investigation. shown in the photo, vegetation is growing.
Maintenance Guidance 63