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|
Type
of Soil |
Acreage |
Percent
of Total Land Use |
|
Potential
Sand Source |
114.0 |
0.5 |
|
Potential
sand and gravel source |
2972.2 |
10.8 |
Source:
Rutland Regional Planning Commission
Commercial Mineral
Deposits
Commercial mineral deposits underlie a
portion of Wallingford primarily along the western side of the Vermont Valley.
Map 5 shows location of important mineral resources in Wallingford.
According to company officials, there
are no significant limestone/marble resources located elsewhere in the
community, other than those under the ownership of the companies in Table 8.5b.
TABLE 8.5b—COMMERCIAL MINERAL
DEPOSITS
|
Mineral
Resource |
Acreage |
Percent |
|
Sand
& Gravel |
156.1 |
0.5 |
|
Marble/limestone
|
400.0
+ |
1.5 |
Source:
Rutland Regional Planning Commission
Significant commercial geologic formations include the Shelburne and Bascom
formation, consisting of dolomite, limestone and marble.
The material is used for aggregate in construction, and is ground and
used for paper, plastic, paint and filler in various products.
Within
this commercial mineral zone, several companies operate quarries.
In addition, they own mineral and surface rights to areas not yet
developed as quarries.
Soils
As an aid to general identification of soil types, the USDA Natural Resources
Conservation Service (NRCS)(formerly Soil Conservation Service) has classified,
mapped and interpreted the soils in the town of Wallingford while conducting a
soil survey for Rutland County. [1]
A
soil survey describes soil characteristics and interprets each soil’s
capability for various uses such as farming, forestry and community development.
The soil survey can also be used to help identify prime farmland,
wetlands, highly erodible land, floodplains and sources of sand and gravel.
The soil maps for Rutland County are based on aerial photographs, with areas of
each soil type and slope class drawn in on the photograph.
The scale of these detailed soil maps is 1:18000 (1 inch on the
photograph = 1500 feet). The soil
maps have also been computerized and are stored in the Geographic Information
System (GIS) at the Rutland Regional Planning Commission office.
The set of resource maps that accompany this Plan were developed using
GIS.
The detailed soil maps for the town reveal that there are over 40 different
types of soils in Wallingford. Each soil type has a unique set of characteristics, including
color, texture, acidity, and other physical and chemical features.
Many soil types are named after the town or village where they were first
studied, which explains why many soils have the name of a geographic region.
The major soil types have been grouped into 10 soil associations that
make up the General Soil Map for the town. (Map 6)
These associations are briefly described as follows:
Soil Associations
|
1a |
Hinckley-Hartland-Windsor:
Gravelly, silty and sandy soils primarily in the Vermont Valley
along Route 7 |
|
1b |
Colton-Duxbury-Sheepscot: Gravelly soils in the Green Mountains, east of Route 7. |
|
1c |
Middlebury-Teel-Limerick: Loamy soils on floodplains along streams.
Taconic-Macomber-Hubbardton: Shallow soils with rocky areas in the
Taconic Mountains, west of Route 7 |
|
2 |
Dutchess-Bomoseen-Pittsdown:
Deeper and wetter soils in the Taconic Mountains, west of Route 7. |
|
3 |
Paxton-Georgia-Amenia: Deeper and wetter soils in the Vermont Valley, along Route
7. |
|
4 |
Farmington-Galway: Shallow soils with rocky areas in the Vermont Valley,
along Route 7. |
|
6a |
Tunbridge-Berkshire-Lyman:
Shallow to deep soils with rocky areas in the Green Mountains, east
of Route 7. |
|
6b |
Peru-Marlow-Cabot:
Deeper and wetter soils in the Green Mountains, east of Route 7. |
|
6c |
Rawsonville-Houghtonville:
Higher elevation soils with rocky areas in the Green Mountains,
east of Route 7. |
Important
agricultural soils are shown on Map 4B, which is based on the NRCS soils data.
Among other characteristics, prime agricultural soils have properties and
characteristics most favorable to crop production.
Some of these properties include good water holding capacity and rooting
depth, gentle slopes, good drainage, few surface stones or rock outcrops that
could interfere with tillage operations, and good fertility.
It should be noted, however, that the fact that certain soil types are
classified as “prime” on the NRCS maps does not mean that such soils have
sufficient agricultural potential to be classified as “primary agricultural
soils”. Such factors as parcel
size, proximity to active markets and farming operations, and accessibility by
mechanized equipment must also be considered, and the value of competing uses
for agricultural lands must be evaluated. Accordingly,
the evaluation of agricultural potential must be based on many factors, not just
soil type. A LESA (Land Evaluation
and Site Assessment) system should be developed and should serve as the basis
for balancing competing uses of agricultural lands.
Two classes of agricultural soils are shown: prime and statewide.
Prime soils are the best soils and meet the US Department of Agriculture
(USDA) national criteria for Prime Farmland.
Statewide soils are good soils that meet a slightly broader set of
criteria for soils of statewide importance.
All Prime Soils meet the Statewide soils criteria, as well as the
national criteria. Agricultural soils make up less than one-sixth of
Wallingford’s total land area. Prime
soils are found on 1418 acres, or 5.1 percent of the total.
Statewide soils are found on 2245 acres, or 8.1 percent of the total land
area.
TABLE
8.5c—AGRICULTURAL SOILS IN WALLINGFORD
|
Class |
Acreage |
Percent |
|
Prime
soils |
1418.1 |
5.1 |
|
Statewide
Soils |
2245.3 |
8.1 |
|
Other |
23889.4 |
86.8 |
|
Total |
27552.8 |
100 |
Source:
Rutland Regional Planning Commission
It
is important to note that not all areas of important agricultural soils are in
farm and crop production. Some
areas are in woodland, housing or are idle.
Conversely, not all land in farm and crop production are areas of
important agricultural soils. Currently,
it appears that Wallingford has more areas of good agricultural soils than land
that is in crop production.
As
of 1997, approximately one-third of the taxes on land in forestry and
agricultural use were paid by the State through the Current Use Value Program.
The Current Use Program allows owners of resource lands to pay property
taxes based on the value of their land in its current resource use rather than
the value of their land if developed for some other use.
Over 3000 acres are in the forestry program and about half that amount is
in the agricultural program. These
programs already help farms, by reducing their tax burden, although the State
has not funded the program fully.
For
the purpose of this technical report, important forest soils shown on Map 7, are
those soil map units with a relative value of 74 or higher according to the Soil
Potential Study and Forest Land Groups for Vermont Soils.
(See footnote 1) These
forest soils consist of map units in Forest Value Groups 1, 2 and 3 (out of a
total of 7). Statewide, soils in Forest Value Groups 1, 2 and 3 cover
approximately 40% of Vermont’s total land Area.
TABLE
8.5d—RELATIVE DISTRIBUTION OF FOREST SOILS STATEWIDE
|
Forest
Value Group |
Relative
Value |
Approximate
% of Vermont Land Area |
|
1 |
100 |
7 |
|
2 |
83 |
15 |
|
3 |
74 |
18 |
|
4 |
63 |
24 |
|
5 |
51 |
22 |
|
6 |
31 |
10 |
|
7 |
0 |
4 |
Source:
USDA Natural Resources Conservation Service
Within
Wallingford, soils classified as important forest soils (Class 1, 2, 3) make up
42.6 percent of total land area. The
distribution of these soils is widespread, being limited in only the rockiest
and wettest parts of town.
TABLE
8.5e—FOREST SOILS IN WALLINGFORD
|
Class |
Acreage |
Percent |
|
Value
Groups 1,2,3 |
11725.3 |
42.6 |
|
Value
Groups 4,5,6,7 |
15877.5 |
57.4 |
|
Total |
27552.8 |
100.0 |
Source:
Rutland Regional Planning Commission
The
key to mapping septic suitability is soil ratings developed by the Federal
Natural Resources Conservation Service (NRCS).
In 2002, the State of Vermont adopted new regulations affecting on-site
wastewater systems. Some significant technical changes were made, including
allowing for traditional and mound septic systems to be installed in more
shallow, wet, and steep soils that would previously have been considered
marginal or unsuitable. These
changes have increased the amount of land available for residential development.
In response to the 2002 regulation changes, NRCS developed new soil
ratings. NRCS has noted the
following kinds of soils that are now more likely to accommodate septic systems:
floodplains; sloping, wet soils; and steep, moderately permeable soils. Map 8 depicts these changes.
Wallingford village is located in an area of the town with good septic
suitability. Other areas with high
potential for septic disposal include the areas along Hartsboro Road, along the
western edge of the National Forest, and along Mill River.
The area covered by Class 1 soils equals roughly 15% of the total, while
areas covered by Class 2 and 3 soils cover another 63%.
TABLE 8.5f—SEPTIC SUITABILITY OF
WALLINGFORD SOILS
|
Class |
Suitability |
Coverage
(acres) |
%
of Total Land Area |
|
I |
Well
Suited |
2,815.30 |
15.3 |
|
II |
Moderately
Suited |
8,621.70 |
46.9 |
|
III |
Marginally
Suited |
3,003.90 |
16.3 |
|
IV |
Not
Suited |
3,543.30 |
19.3 |
|
V |
Not
Rated |
392.40 |
2.1 |
Total
|
18,376.7 |
100 |
|
|
|
|||
|
Conserved
Lands |
9,145.90 |
100 |
|
|
Total
conserved and un-conserved lands |
27,522.6 |
|
|
Source:
Rutland Regional Planning Commission
TABLE
8.5g—SEPTIC SUITABILITY OF CONSERVED SOILS
|
Conserved
Lands (GMNF, Vermont Land Trust, private easements) |
|||
|
Class |
Suitability |
Acres |
%
Total |
|
I |
Well
Suited |
835.80 |
9.1 |
|
II |
Moderately
Suited |
3,053.10 |
33.3 |
|
III |
Marginally
Suited |
2,737.60 |
29.9 |
|
IV |
Not
Suited |
2,359.50 |
25.7 |
|
V |
Not
Rated |
159.90 |
1.7 |
|
|
Total |
9,145.90 |
100 |
Source:
Rutland Regional Planning Commission
Map
4B identifies areas where the slope is greater than 25 percent.
Generally, the steepest slopes (greater than 25%) are found around Bear
Mountain, White Rocks and Green Mountain along the western flank of the Green
Mountains and in the Taconic Mountains west of the Vermont Valley.
The area affected by steep slopes is summarized in Table 8.6a.
Just over 35% of the town has slopes of less than 15%.
Twenty percent of the town has slopes of between 15 and 25 percent, while
13.6 percent has slopes of greater than 25%.
Another 31.5 % consists of National Forest soils, which are not rated,
but are characterized as “rolling”, “hilly”, “very hilly”, and
“very steep”.
TABLE
8.6a—SLOPE CLASS IN WALLINGFORD
|
Slope
Class |
Acreage |
%
of Total Land Area |
|
<
15% |
9658.0 |
35.1 |
|
15
- 25 % |
5470.7 |
19.9 |
|
>
25 % |
3757.9 |
13.6 |
|
National
Forest Land |
8666.1 |
31.5 |
Source:
Rutland Regional Planning Commission
Several
distinct zones make up flood hazard areas.
Floodways are areas immediately along side moving water that must be
reserved in order to discharge a large flood without increasing the water
elevation by more than one foot. Floodplains
are areas immersed by water during flooding, including floodways.
The 100-year floodplain includes the area flooded, on average, once every
100 years.
Wallingford’s
most significant mapped floodplain lies along Otter Creek and Mill River.
(Map 4A) As shown on
Table 8.7a, about 2% of the town is in the floodway, an additional 1.5% is in
the 100-year floodplain, and an additional 1% or less is in the 500-year
floodplain, for a total of about 4.5% of land potentially affected by flooding.
TABLE
8.7a—FLOOD HAZARD AREAS IN WALLINGFORD
|
Category |
Acreage |
Percent |
|
500
year floodplain |
187.7 |
0.7 |
|
100
year floodplain |
390.1 |
1.4 |
|
floodway |
511.1 |
1.9 |
Source: Rutland Regional Planning Commission
Wetland
Laws and Regulations
In 1986, the Vermont Legislature passed the Vermont Wetlands Act.
Prior to the enactment of this law, primary responsibility for regulating
wetlands in Vermont rested with the Federal government. Under federal law,
the Army Corps of Engineers and the Environmental Protection Agency jointly
administer Section 404 of the 1972 Clean Water Act. Section 404, as
amended, regulates the placement of dredged or fill material into wetlands and
waterways.
Vermont’s
1986 statute does not supersede federal authority, but instead supplements it,
although there are some contradictions between the Clean Water Act and the
Vermont statutes and rules. The
rules implementing the Vermont Wetlands Act designate all wetlands in the State
into one of three classes, of which only Class 1 and Class II wetlands are
subject to regulation under the Wetlands Rules.
Class III wetlands are not of such significant importance to require or
to be subject to regulation under the Vermont Wetlands Rules.
The particular designation a wetland receives is based on an evaluation
of its function and a review of standards specified in the Wetland Rules. The consideration of functional criteria in the
classification of a wetland recognizes the vital roles which wetlands fulfill as
wildlife habitat, a check on the destructive power of floods, as recreational
areas, and as filters to purify polluted water.
Designation of
Wetlands
The Class I wetland designation is
reserved for only the most significant natural areas.
A petition is required to start the process of arriving at this
designation. Class I wetlands are
defined as those which “in and of themselves are so exceptional or
irreplaceable in their contribution to Vermont’s natural heritage and
therefore so significant (that) they merit the highest level of protection under
the rules.” Disturbance or development of a Class I wetland is
rarely permitted. Parties
contemplating disturbance of such a resource must prove that they are not
endangering the wetland in any way. There
are no Class I wetlands in Wallingford. The
Tinmouth Channel, near the western border of Wallingford was classified a Class
I wetland in 2001.
Significant
wetlands have been designated Class II. The
base inventory comes from all wetlands “shown on the National Wetlands
Inventory maps for the State of Vermont (1978) published by the US Fish and
Wildlife Service”. Class II
wetlands are those which are significant resources deserving of protection under
the Vermont Wetland Rules. The
Water Resources Board however, may allow on or off-site mitigation of
disturbance in Class II wetlands. There
are numerous Class II wetlands in Wallingford which are shown on Map 4A.
Class
III wetlands are those that are not designated either Class I or Class II
wetlands. Essentially, this means
that such wetlands have not been determined to be so significant as to merit
protection under the Rules. The
extent of these wetlands is not known, however, since they have not yet been
inventoried.
Land Uses within
Wetlands
Any activity not permitted under the
Vermont Wetland Rules in a Class I or Class II Wetland is a conditional use.
These activities require a Conditional Use Determination (CUD),
administered by the Agency of Natural Resources.
A new road in a significant wetland, regardless of its purpose, must go
through a CUD. Still, the rules do not constitute a permit process.
A CUD is more similar to a zoning variance at the local level.
As such, the burden of proof is on the applicant to show that the
conditional use will not adversely affect the value and functions of the
wetland. An application must be
filed with the Department of Environmental Conservation (a division of the
Agency of Natural Resources). Also,
complete copies of the application must be sent to each town and regional
planning commission in which the wetland is located.
Buffer Zones
Vermont’s Wetland Rules establish
buffer zones around Class I and Class II wetlands.
The buffer zone is intended to protect the functions and values of the
wetland by remaining a naturally vegetated and undisturbed outer shell.
Currently, the Rules designate a 100-foot buffer zone adjacent to a Class
I wetland; and a 50-foot buffer zone adjacent to a Class II wetland.
Depending on the particular circumstances involved, the protection of a
wetland may require wider buffer zones.
Activities
taking place inside a wetland or its associated buffer fall into two categories
with respect to the regulations. The
first category is that of allowed uses. These
are exempt from the Conditional Use Determination (CUD) process administered by
the Agency of Natural Resources. Farming
and logging are considered agricultural or silvicultural activities that are
allowed uses. Silviculture in
particular is defined in the amended Rules as “those activities associated
with the sustained management of land for silvicultural purposes including the
planting, harvesting and removal of trees”.
However, while exempt from the CUD process, such allowed uses in Class I
and Class II wetlands and their buffer zones are regulated indirectly through a
series of provisions. The Rules
state that all allowed activities must not alter the outlet or flow of water in
a Class I or Class II wetland. Similarly,
no draining, dredging, grading, or filling of Class I or Class II wetlands is
permitted except as provided for in the Acceptable Management Practices (AMPs)
and the Department of Fish and Wildlife standards for silviculture in deer
wintering areas. Other provisions
of the Rules restrict road construction, road maintenance, the building of log
landing areas, removal of beaver dams and equipment maintenance activities in
Class I or Class II wetlands or their buffer zones.
Vermont’s Department of Forests, Parks and Recreation publishes a booklet
detailing AMPs for maintaining water quality on logging jobs in the State.
The AMPs deal with subjects including construction of skid trails, truck
roads, stream crossings and log landings. The
AMPs began as voluntary guidelines, and are now mandatory.
Like AMPs, Accepted
Agricultural Practices (AAPs) have been created which seek to maintain water and
soil quality in connection with farming activities.
The AAPs deal with erosion control, manure handling, pesticide
application, cattle in streams, stream fording and bank stabilization.
For example, the AAPs state that “animal manure shall be stored at
least 100 feet from shallow springs or wells”.
The AAPs are now mandatory. Agricultural
activities in compliance with the AAPs are exempt from the Wetlands Rules.
· the presence of water at the surface for more than 21 consecutive days in any year.
·
the types of soils that form in these situations, known as
‘hydric’ soils.
·
the kinds of plants that grow in such conditions and soils.
The
values and functions of significant wetlands include:
·
providing wildlife habitat.
·
storing storm water.
·
purifying surface and groundwater supplies.
·
recharging aquifers.
·
controlling erosion.
·
providing areas for recreation.
·
serving as educational research areas.
In
Wallingford, hydric soils are scattered throughout the town.
The highest concentration of hydric soils is on floodplains along Otter
Creek and Mill River and in the uplands west and southwest of East Wallingford. The area covered by hydric soils is somewhat limited.
Just under 1400 acres, or 5% of the total land area, meets hydric soil
designation.
[1]
It should be noted that, while the Soil Conservation Service mapping is
generally accurate, actual soil conditions determined through on-site
evaluations are more accurate in establishing site-specific soil conditions.
Accordingly, wherever soil conditions are relevant throughout this
Plan, where soil information is derived from on-site evaluations, such
information shall control over Soil Conservation Service mapping.
It is also the intent of this Plan that SCS mapping should not be
used to prohibit development but to alert those who would use or develop
their land of soil types and conditions that may exist on their property.
[2]
Yuriy Bihun, University of Vermont Extension Service. “Wetland Rules and Regulations: What they mean to your
logging operation in Vermont.” December
1990, p. 5
Land use in Wallingford reflects the historical evolution of the town from a self-sufficient farming community and commercial center to one of an increasingly inter-dependent group of communities. A land use pattern of tightly clustered villages surrounded by open land and scattered farms and residences has given way to a pattern of more diffuse residential and commercial development. Existing land use patterns generally follow the zoning districts reflected in the Wallingford Zoning Regulations adopted in 1972.
According to the Town Lister’s data, residential land uses represented the predominant use of non-federal land in Wallingford in 1997. Privately owned woodland was the next most extensive land use recorded in the town, followed by farms and miscellaneous buildings and lots. Despite their significant economic impact, commercial and industrial activities occupied a relatively minor portion of the Town’s taxable land area.
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