2015, 03-24 SVMC 21.40 Critical Areaschapter 21.40 CRITICAL AREAS Page 1 of 60
Sections:
21.40.010
21.40.020
21.40.030
21.40.040
21.40.050
21.40.060
21.40.070
Chapter 21.40
CRITICAL AREAS
Purpose.
Wetlands.
Fish and wildlife habitat conservation areas.
Adjustment of habitat buffer areas.
Geologically hazardous areas.
Critical aquifer recharge areas.
Reasonable use determination.
21.40.010 Purpose.
WAC 365-195-410 requires that critical areas be designated and that regulations to protect them be
adopted. Critical areas include wetlands, areas of critical recharging effect on aquifers used for
potable water; fish and wildlife habitat conservation areas, frequently flooded areas; and geologically
hazardous areas. (Ord. 07-015 § 4, 2007).
21.40.020 Wetlands.
A. Wetland Classification and Rating. Wetland areas mean areas that are inundated or saturated by
surface water or ground water at a frequency and duration sufficient to support, and that under
normal circumstances do support, a prevalence of vegetation typically adapted for life in saturated
soil conditions. Wetlands generally include swamps, marshes, bogs, and similar areas. Wetlands do
not include those artificial wetlands intentionally created from non -wetland sites, including, but not
limited to, irrigation and drainage ditches, grass -lined swales, canals, detention facilities, wastewater
treatment facilities, farm ponds, and landscape amenities, or those wetlands created after July 1,
1990, that were unintentionally created as a result of the construction of a road, street, or highway.
Wetlands may include those artificial wetlands intentionally created from non -wetland areas created
to mitigate conversion of wetlands (RCW 36.70A.030(21)).
Wetlands areas are identified in Chapter 8 of the Spokane Valley Comprehensive Plan in
conformance with the Washington State Wetlands Identification and Delineation Manual (Ecology
Publication No. 96-94), March 1997, as it may be amended from time to time, which classifies
wetlands. Wetland scoring is based on the Washington State Wetland Rating System for Eastern
Washington (Ecology Publication No. 04-06-15, or as amended).
1. Category I wetlands are those that represent a unique or rare wetland type; are more
sensitive to disturbance than most wetlands; are relatively undisturbed and contain ecological
attributes that are impossible to replace within a human lifetime; or provide a high level of
function.
a. Alkali wetlands;
b. Wetlands that are identified by scientists of the Washington Natural Heritage
Program/DNR as high quality wetlands;
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Chapter 21.40 CRITICAL AREAS Page 2 of 60
c. Bogs;
d. Mature and old-growth forested wetlands over one-quarter acre with slow-growing trees;
e. Forests with stands of aspen; and
f. Wetlands that perform many functions very well (scores of 70 points or more).
2. Category II wetlands are difficult, though not impossible, to replace, and provide high levels of
some functions and include:
a. Forested wetlands in the floodplains of rivers;
b. Mature and old-growth forested wetlands over one-quarter acre with fast-growing trees;
c. Vernal pools; and
d. Wetlands that perform functions well (scores between 51 to 69 points).
3. Category III wetlands include:
a. Vernal pools that are isolated; and
b. Wetlands with a moderate level of functions (scores between 30 to 50 points).
4. Category IV wetlands have the lowest level of functions and are often heavily disturbed.
These wetlands may provide important functions and shall be replaced or restored.
B. Wetland Buffer Areas.
1. Exemptions.
a. Wetlands less than 1,000 square feet in area where the area is not associated with a
riparian corridor; is not a vernal pool, an alkali wetland, part of a wetland mosaic, or does
not contain habitat identified as essential for local populations of priority species.
b. Category III and IV wetlands of less than 4,000 square feet in area where the area is not
associated with a riparian corridor; is not a vernal pool, an alkali wetland, part of a wetland
mosaic, does not contain habitat identified as essential for local populations of priority
species scoring less than 20 points or less on the Eastern Washington Rating System and
is not required for biofiltration of stormwater.
c. An exemption under this section does not relieve the proponent for providing full
mitigation through restoration or replacement.
2. Buffers.
a. Wetland buffer areas shall be required for all regulated uses and activities adjacent to
wetlands. Any wetland created, restored or enhanced as compensation for approved
wetland alterations shall also include the standard buffer required for the category of the
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created, restored, or enhanced wetland. All buffers shall be measured from the wetland
boundary as determined in the field.
b. The width of wetland buffers shall be established by one of the following methods:
i. Alternative 1. Width based only on wetland category.
Table 21.40-1 — Wetland Buffer Width
Wetland Category
Minimum Buffer Width
(in feet)
I
250
II
200
III .
150
IV
50
ii. Alternative 2. Width based on wetland category and the intensity of impacts from
proposed changes in land use. Land use intensity shall be determined as follows:
Table 21.40-2 — Wetland Impact
Impact from Proposed
Change in Land Use
Types of Land Use Based on Common Zoning Designations *
High
Commercial, industrial and institutional
Residential (more than 1 unit/acre)
High-intensity recreation (golf courses, ball fields, etc.)
Moderate
Residential (1 unit/acre or less)
Moderate -intensity active open space (parks with biking, jogging, etc.)
Paved trails
Utility corridor with access/maintenance road
Low
Passive open space (hiking, bird -watching, etc.)
Unpaved trails
Utility corridor without road or vegetation management
Table 21.40-3 — Wetland Intensity Impact Buffer
Wetland
Category
Minimum Buffer Width (in feet)
Low
Impact
Moderate
Impact
High
Impact
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Wetland
Category
Minimum Buffer Width (in feet)
Low
Impact
Moderate
Impact
High
Impact
I
125
190
250
II
100
150
200
III
75
110
150
IV
25
40
50
iii. Alternative 3. Width based on wetland category, intensity of impacts, and wetland
functions or special characteristics. This alternative has two options for determining the
widths of buffers when they are based on the score for habitat. Alternative 3 provides
three buffer widths based on habitat scores. Where more than one width applies based
on score for function or based on special characteristics, the calculation providing the
widest buffer shall be used.
Table 21.40-4 — Wetland Buffers by Habitat
Score
Wetland
Category
Habitat
Score
Minimum Buffer Width (in
feet)
Low
Impact
Moderate
Impact
High
Impact
I
29 — 36
100
150
200
20 — 28
75
110
150
< 20
50
75
100
II
29 — 36
100
150
200
20 — 28
75
110
150
< 20
50
75
100
III
20 — 28
75
110
150
> 28
40
60
80
IV
N/A
25
40
50
Table 21.40-5 — Wetland Special Characteristic Buffers
Special Characteristic
Low Impact
Moderate Impact
High Impact
Vernal Pool
100
150
200
Vernal Pool with Regional Plan*
40
60
80
Natural Heritage Wetland
125
190
250
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Chapter 21.40 CRITICAL AREAS
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Special Characteristic
Low Impact
Moderate Impact
High Impact
Bogs
125
190
250
Alkali
100
150
200
*Develop a regional plan to protect the most important vernal pool complexes.
3. Additional buffer area width may be required by the director if:
a. The wetland includes a plant or animal species listed by the federal government or the
state as endangered, threatened, candidate, sensitive, monitored or documented priority
species or habitats, or essential or outstanding habitat for those species or has unusual
nesting or resting sites such as heron rookeries or raptor nesting trees; or
b. The adjacent land has a slope of 30 percent or more adjacent to the wetland, the buffer
area may be increased by 50 percent.
4. Reduction of Standard Wetland Buffer Area Width.
a. The standard wetland buffer area width scored moderate or high for habitat may be
reduced if:
i. A relatively undisturbed vegetative corridor of at least 100 feet in width is protected
between the wetland and any other priority habitats; and
ii. The protected area is preserved by means of easement, covenant or other measure;
and
iii. Measures identified in subsection (B)(4)(b) of this section are taken to minimize the
impact of any proposed land use.
b. The standard wetland buffer area width scored less than 20 for habitat may be reduced to
that for moderate land use impact where the following mitigation measures are approved by
the City:
Table 21.40-6 — Disturbance Buffers
Disturbance
Mitigation Buffers
Light
Light sources are shielded from
the wetland
Noise
Wetland is shielded from noise
Stormwater runoff
Biofiltration or other measures
prevent introduction of
unfiltered stormwater directly
into the wetland
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Chapter 21.40 CRITICAL AREAS
Disturbance
Mitigation Buffers
Human activity
Visual screening of wetlands is
required
Dust/particulates
Parking and driveways are
paved
5. Standard Buffer Width Averaging.
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a. Standard wetland buffer area width may be averaged if all of the following conditions
exist:
i. The wetland has significant differences in characteristics that affect its habitat
functions, such as a wetland with a forested component adjacent to a degraded
emergent component or a "dual -rated" wetland with a Category I area adjacent to a
lower rated area.
ii. The buffer is increased adjacent to the higher -functioning area of habitat or more
sensitive portion of the wetland and decreased adjacent to the lower -functioning or less
sensitive portion.
iii. The total area of the buffer after averaging is equal to the area required without
averaging.
iv. The buffer at its narrowest point is never less than three-quarters of the required
width.
b. Averaging may be permitted when all of the following are met:
i. There are no feasible alternatives to the site design that could be accomplished
without buffer averaging.
ii. The averaged buffer will not result in degradation of the wetland's functions and
values as demonstrated by a report from a qualified wetland expert.
iii. The total buffer area after averaging is equal to the area required without averaging.
iv. The buffer at its narrowest point is never less than three-quarters of the required
width.
6. Wetland Buffer Maintenance. Except as otherwise specified, wetland buffer areas shall be
retained in their natural condition. Where buffer disturbances have occurred before or during
construction, revegetation with native vegetation shall be required.
C. Wetland Mitigation Plan. When mitigation is required, the applicant shall submit a mitigation plan
which shall include:
1. A written report identifying environmental goals and objectives of the compensation proposed,
including:
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a. A description of the anticipated impacts to the critical areas and the mitigating actions
proposed, including the site selection criteria; mitigation goals and objectives, in relation to
the functions and values of the impacted critical area; and dates for beginning and
completion of mitigation activities;
b. A review of the best available science supporting the proposed mitigation and a
description of the report author's experience to date in restoring or creating the type of
critical area proposed; and
c. An analysis of the likelihood of success of the compensation project.
2. Measurable specific criteria for evaluating whether or not the goals and objectives of the
mitigation project have been successfully attained and whether or not the requirements of critical
area regulations in this chapter have been met.
3. Details of the mitigation shall include:
a. The proposed construction method, sequence, timing, and duration;
b. Grading and excavation details;
c. Erosion and sediment control features;
d. A planting plan specifying plant species, quantities, locations, size, spacing, and density;
and
e. Measures to protect and maintain plants until established.
These written specifications shall be accompanied by detailed site diagrams, scaled cross-
sectional drawings, topographic maps showing slope percentage and final grade elevations, and
any other drawings appropriate to show construction techniques or anticipated final outcome.
4. A program for monitoring construction of the mitigation project and for assessing the
completed project against its goals and objectives.
5. Identification of potential courses of action, and any corrective measures to be taken if
monitoring or evaluation indicates project performance standards are not being met.
6. All reasonable efforts to avoid and minimize impacts to critical areas shall be evaluated. When
an alteration to a critical area is proposed, such alteration shall be avoided, minimized, or
compensated for in the following sequential order of preference:
a. Avoiding the impact altogether by not taking a certain action or parts of an action;
b. Minimizing impacts by limiting the degree or magnitude of the action and its
implementation, by using appropriate technology, or by taking affirmative steps, such as
project redesign, relocation, or timing, to avoid or reduce impacts;
c. Rectifying the impact to wetlands, critical aquifer recharge areas, frequently flooded
areas, and habitat conservation areas by repairing, rehabilitating, or restoring the affected
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environment to the historical conditions or the conditions existing at the time of the initiation
of the project;
d. Minimizing or eliminating a hazard by restoring or stabilizing the hazard area through
engineered or other methods;
e. Reducing or eliminating the impact or hazard over time by preservation and maintenance
operations during the life of the action;
f. Compensating for the impact to wetlands, critical aquifer recharge areas, frequently
flooded areas, and habitat conservation areas by replacing, enhancing, or providing
substitute resources or environments; and
g. Monitoring the hazard or other required mitigation and taking remedial action when
necessary.
7. If compensatory mitigation is proposed, the mitigation plan shall also include the following:
a. A baseline study that analyzes the existing functions of the wetland and wetland buffer,
functions that will be lost, and functions after mitigation;
b. Description of how lost functions will be replaced;
c. Description of when mitigation will occur relative to project construction;
d. Provisions for adequate monitoring to ensure success of the mitigation plan. The
monitoring plan shall outline the approach for monitoring construction and assessment of
the completed project, and shall include a monitoring schedule. A monitoring report shall be
submitted to the City annually for a period of at least five years and shall document
successes, problems and contingency actions of the mitigation project. Monitoring activities
may include, but are not limited to:
i. Establishing vegetation monitoring plots to track changes in plant species
composition and density over time;
ii. Measuring base flow rates and stormwater runoff to model and evaluate hydrologic
predictions;
iii. Sampling fish and wildlife populations to determine habitat utilization, species
abundance and diversity; and
iv. Sampling surface and subsurface waters to determine pollutant loading, and
changes from the natural variability of background conditions;
e. A contingency plan specifying what corrective actions will be taken should the mitigation
not be successful.
8. Wetland Mitigation Banks. Credits from a wetland mitigation bank may be approved for use as
compensation for unavoidable impacts to wetlands when:
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a. The bank is certified under state law;
b. The wetland mitigation bank provides compensation for the authorized impacts; and
c. The proposed use of credits is consistent with the terms and conditions of the bank's
certification.
Replacement ratios for projects using bank credits shall be consistent with replacement ratios
specified in the bank's certification.
D. Wetland Mitigation and Restoration. Any wetland lost or degraded as a result of human activity
shall require an approved wetland mitigation plan, prepared by a qualified ecologist and approved by
the Washington Department of Ecology, including one or more of the following measures:
1. Wetland acreage replacement and mitigation requirements based on the number of units
impacted require replacement/mitigation according to the following table:
Table 21.40-7 - Wetland Replacement and Mitigation Ratios
Impacted
Wetland
Replacement
Re-establishment/Creation
(R/C)
Rehabilitation
Only
Combined
R/C and
Rehabilitation
Combined
R/C and
Enhancement
Enhi
Category
I
1:6
112
1:8*
1:1 R/C and
1:6 RH*
1:1 R/C and
1:12*E
1:16'
Category
II
1:3
1:3
1:6
1:1 R/C and
1:4 RH
1:1 R/C and
1:8 E
1:12
Category
III
1:2
1:2
1:4
1:1 R/C and
1:2 RH
1:1 R/C and
1:4 E
1:8
Category
IV
1:1.5
1:5
1:3
1:1 R/C and
1:1 RH
1:1 R/C and
1:2 E
1:6
* Based on score for function R/C = Re-establishment/Creation
2. Wetland mitigation may be permitted off-site if:
a. The hydrology and ecosystem of the original wetland and those who benefit from the
hydrology and ecosystem will not be substantially damaged by the loss within that primary
drainage basin; and
b. On-site mitigation is not scientifically feasible due to problems with hydrology, soils, or
other factors such as other potentially adverse impacts from surrounding land uses; or
c. Existing functions off-site are significantly greater than lost wetland functional values; or
d. Established goals for flood storage, flood conveyance, habitat or other wetland functions
have been established and strongly justify off-site location of mitigation measures.
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E. Permits Required. A permit shall be required for all development which affects wetlands or wetland
buffers. The permit shall specify:
1. The timing and conditions of mitigation, restoration or enhancement;
2. Requirements for title notice, conservation easements or plat dedication;
3. Access limitations and fencing, if required;
4. Temporary and permanent signage; and
5. Requirements for staking of wetland and buffers prior to development; and
6. The application shall be accompanied by a report prepared by a certified biologist specifying
the classification, scoring and justification for the selection of method and proposed
replacement/creation, rehabilitation, and mitigation proposed. A copy of the report shall be filed
with the Washington Department of Ecology. (Ord. 07-015 § 4, 2007).
21.40.030 Fish and wildlife habitat conservation areas.
A. Priority Habitats. Priority habitats within Spokane Valley are illustrated in the Comprehensive Plan,
as it may be amended from time to time, and include wetlands, riparian, urban open space, and the
habitat of native species, as defined in Appendix A. The status of individual species is included in the
Washington Department of Fish and Wildlife Management Recommendations for Priority Species and
in Chapter 232-12 WAC. Where differences in regulations exist as a result of overlapping priority
habitat, the regulation providing the highest degree of protection shall apply.
B. Wetlands are located on hydric soils, support hydrophytic vegetation and are saturated with water
during some portion of the growing season.
C. Riparian fish and wildlife management zones are established pursuant to the classification of
streams, lakes and other water bodies by the Washington Department of Natural Resources as
follows:
1. "Type S water" means all waters, within their bankable width, as inventoried as "shorelines of
the state" under Chapter 90.58 RCW and the rules promulgated pursuant to Chapter 90 58
RCW including periodically inundated areas of their associated wetlands.
2. "Type F water" means segments of natural waters other than Type S waters, which are within
the bankfull widths of defined channels and periodically inundated areas of their associated
wetlands, or within lakes, ponds, or impoundments having a surface area of one-half acre or
greater at seasonal low water and which in any case contain fish habitat or are described by one
of the following four categories:
a. Waters, which are diverted for domestic use by more than 10 residential or camping units
or by a public accommodation facility licensed to serve more than 10 persons, where such
diversion is determined by the department to be a valid appropriation of water and the only
practical water source for such users. Such waters shall be considered to be Type F water
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Chapter 21.40 CRITICAL AREAS Page 11 of 60
upstream from the point of such diversion for 1,500 feet or until the drainage area is
reduced by 50 percent, whichever is less;
b. Waters, which are diverted for use by federal, state, tribal or private fish hatcheries. Such
waters shall be considered Type F water upstream from the point of diversion for 1,500 feet,
including tributaries if highly significant for protection of downstream water quality. The
department may allow additional harvest beyond the requirements of Type F water
designation provided the department determines after a landowner -requested on-site
assessment by the Department of Fish and Wildlife, Department of Ecology, the affected
tribes and interested parties that:
i. The management practices proposed by the landowner will adequately protect water
quality for the fish hatchery; and
ii. Such additional harvest meets the requirements of the water type designation that
would apply in the absence of the hatchery;
c. Waters, which are within a federal, state, local, or private campground having more than
10 camping units; provided, that the water shall not be considered to enter a campground
until it reaches the boundary of the park lands available for public use and comes within 100
feet of a camping unit, trail or other park improvement;
d. Riverine ponds, wall -based channels, and other channel features that are used by fish for
off -channel habitat. These areas are critical to the maintenance of optimum survival of fish.
This habitat shall be identified based on the following criteria:
i. The site must be connected to a fish habitat stream and accessible during some
period of the year; and
ii. The off -channel water must be accessible to fish.
3. "Type Np water" means all segments of natural waters within the bankfull width of defined
channels that are perennial non -fish habitat streams. Perennial streams are waters that do not
go dry any time of a year of normal rainfall. However, for the purpose of water typing, Type Np
waters include the intermittent dry portions of the perennial channel below the uppermost point
of perennial flow. If the uppermost point of perennial flow cannot be identified with simple,
nontechnical observations then Type Np waters begin at a point along the channel where the
contributing basin area is at least 300 acres.
4. "Type Ns water" means all segments of natural waters within the bankfull width of the defined
channels that are not Type S, F, or Np waters. These are seasonal, non -fish habitat streams in
which surface flow is not present for at least some portion of a year of normal rainfall and are not
located downstream from any stream reach that is a Type Np water. Type Ns waters must be
physically connected by an above -ground channel system to Type S, F, or Np waters.
D. Riparian management zones (RMZs) include three zones (measured horizontally in feet from the
outer edge of the bankfull width or channel migration zone, whichever is greater) established in the
following Tables 21.40-9 and 21.40-10 and zone regulations. Outer zone requirements for S and F
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Chapter 21.40 CRITICAL AREAS Page 12 of 60
stream types are based on DNR Eastern Washington 100 -year site index range summarized as
follows in Table 21.40-8:
Table 21.40-8 — Outer Zone Requirements for
Stream Types
Site Class
100 -Year Site Index Range
I
120 +
II
101 —120
III
81 —100
IV
61 — 80
V
=< 60
Table 21.40-9 — Riparian Management Zones for Streams Less Than 15 Feet in Width, Bankfull
Site Class
Core Zone
Inner Zone
Outer Zone
Other
Total Width
Type S — Shorelines of the state
I
30'
45'
55'
n/a
130'
II
30'
45'
35'
n/a
110'
III
30'
45'
15'
n/a
90'
IV
30'
45'
0'
n/a
75'
V
30'
45'
0'
n/a
75'
Type F — Natural waters not classified as shorelines of the state with fish
I
30'
45'
55'
n/a
130'
II
30'
45'
35'
n/a
110'
III
30'
45'
15'
n/a
90'
IV
30'
45'
0'
n/a
75'
V
30'
45'
0'
n/a
75'
All
Type Np — Non -fish, perennial
50'
50'
All
Type Ns — Non -fish, seasonal
30'2
30'
1 Washington State Department of Natural Resources State Soil Survey
2 Equipment limitation zone
Table 21.40-10 — Riparian Management Zones for Streams Greater Than 15 feet in Width, Bankfull
Site Class
Core Zone
Inner Zone
Outer Zone
Other
Total Width
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Chapter 21.40 CRITICAL AREAS
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Site Class
Core Zone
Inner Zone
Outer Zone
Other
Total Width
Type S — Shorelines of the state
I
30'
70'
30'
n/a
130'
II
30'
70'
10'
n/a
110'
III
30'
70'
0'
n/a
90'
IV
30'
70'
0'
n/a
75'
V
30'
70'
0'
n/a
75'
Type F — Natural waters not classified as shorelines of the state with fish
I
30'
70'
30'
n/a
130'
11
30'
70'
10'
n/a
110'
I11
30'
70'
0'
n/a
100'
IV
30'
70'
0'
n/a
100'
V
30'
70'
0'
n/a
100'
All
Type Np — Non -fish, perennial
50'
50'
All
Type Ns — Non -fish, seasonal
30'1
30'
1 Equipment limitation zone
If there is more than one site class adjacent to the stream within a proposed RMZ, the landowner has
the option of using the highest site class (i.e., most protective) or segmenting out the site classes and
managing them separately.
1. Core Zones. The core zone extends 30 feet measured horizontally from the edge of the
bankfull width or outer edge of the CMZ, whichever is greater, for all timber habitat types. No
harvest or construction is allowed in the core zone except as otherwise provided in WAC 222-
30-020. Any trees cut for or damaged by yarding corridors must be left on site. Any trees cut as
a result of road construction to cross a stream may be removed from the site unless used as
part of a large woody debris replacement strategy.
2. Inner Zones. Width and leaf tree requirements of the inner zone vary by timber habitat type
specified in WAC 222-30-020.
3. Outer Zones. This zone has three categories based on timber habitat type: Ponderosa pine,
mixed conifer and high elevation. The width of this zone is zero to 55 feet measured horizontally
from the outer edge of the inner zone depending on the site class and stream width.
E. The shade requirements in WAC 222-30-040 must be met regardless of harvest opportunities
provided in the inner zone RMZ rules.
F. An equipment limitation zone is a 30 -foot wide zone measured horizontally from the outer edge of
bankfull width of a Type Np or Ns water where equipment is limited. It applies to all perennial and
seasonal streams. On-site mitigation shall be required where ground-based equipment, skid trails or
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stream crossings other than existing roads exposes the soil more than 10 percent of the surface area
of the zone. Mitigation must be designed to replace the equivalent of lost functions, especially
prevention of sediment delivery. Examples include water bars, grass seeding, mulching, etc.
G. Except as otherwise required to reduce flooding, riparian management zones (RMZ) shall be
retained or maintained in accordance with Chapter 222-30 WAC.
H. None of the limitations on harvest in each of the three zones listed below will preclude or limit the
construction and maintenance of roads for the purpose of crossing streams in accordance with WAC
222-24-030 and 222-24-050 or the creation and use of yarding corridors in accordance with WAC
222-30-060(1). Roads within riparian buffer areas shall be kept to a minimum and shall not run
parallel to the water body. Crossings, where necessary, shall cross riparian areas at as near right
angles as possible. If no alternative exists to placement of a roadway within a riparian area, mitigation
may be required. Mitigation measures shall be specified in a management plan and may include, but
are not limited to:
1. Fencing of riparian buffer area to protect remaining vegetation; and
2. Enhancement of remaining riparian buffer area through planting of native vegetation.
3. Water crossings must be approved by the Washington State Department of Fish and Wildlife
(WAC 75-20-100).
I. Proposed equestrian pedestrian/bike trails shall demonstrate though "best available science" that
the location and width of the trail minimizes any adverse impacts on habitat, and that measures to
reduce effects during construction are implemented.
J. Off-road motorized vehicle use in riparian buffers areas is prohibited.
K. All development proposals shall follow the bald eagle protection rules (RCW 77.12.655 and WAC
232-12-292), as now or hereafter amended, when the proposal is likely to have a direct impact on the
habitat of the bald eagle. (Ord. 07-015 § 4, 2007).
21.40.040 Adjustment of habitat buffer areas.
A. Habitat buffer areas may be reduced by the director up to a maximum of 10 percent if a riparian
buffer area is enhanced using native plants including trees and shrubs according to a plan prepared
in consultation with the Spokane County Soil Conservation District and the Washington State
Department of Fish and Wildlife.
B. Habitat buffer areas may be modified by the director if averaging will provide the necessary
biological, chemical and physical support necessary to protect the fish and wildlife.
1. The riparian area contains variations in sensitivity due to existing physical characteristics
which justify the averaging; or
2. The land uses causing the least disturbance would be located adjacent to areas where the
buffer width is reduced and that such land uses are guaranteed in perpetuity by covenant, deed
restriction, easement or other legally binding mechanism; and
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;Chapter 21.40 CRITICAL AREAS Page 15 of 60
3. The total area contained within the buffer after averaging is no less than that contained within
the standard buffer prior to averaging.
C. Habitat buffer areas may be increased by the director up to a maximum of 25 percent if:
1. The land adjacent to the water is susceptible to severe erosion and other erosion control
measures will not prevent adverse impacts.
2. The land adjacent to the water has minimal vegetative cover or slopes greater than 30
percent.
D. This provision does not diminish the 200 -foot shoreline jurisdiction applicable to shorelines of the
state.
E. Habitat Management Plan Required. A habitat management plan shall be certified by a qualified
biologist, reviewed by the Washington State Department of Fish and Wildlife and approved in writing
by the director. The plan shall include:
1. A description of the nature, density and intensity of the proposed use or activity in sufficient
detail to allow analysis of such land use change upon identified wildlife habitat.
2. An analysis of the effect of the proposed use or activity upon fish and wildlife species and
their habitats, identified within the priority habitat and species program.
3. A plan which explains how the applicant will avoid, minimize or mitigate adverse impacts to
fish and/or wildlife habitats created by the proposed use or activity.
4. Habitat management recommendations, including potential uses and restrictions of the habitat
areas, seasonally sensitive areas and other guidelines necessary for the protection of the
species.
5. Proposed provisions for ensuring continued protection of habitat and habitat buffer areas.
6. Conditions established by an approved habitat management plan shall be included as a
condition of approval for a permit. (Ord. 07-015 § 4, 2007).
21.40.050 Geologically hazardous areas.
A. Geologically hazardous areas include both erosion and landslide hazard areas where one or more
of the following exist:
1. A slope of 30 percent or greater;
2. Soils identified by the Natural Resource Conservation Service as having a severe potential for
erosion;
3. Hydraulic factors such as existing on-site surface and groundwater or changes in hydraulic
factors, caused by proposals that create a severe potential for erosion or landslide hazard;
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Chapter 21.40 CRITICAL AREAS Page 16 of 60
4. Areas that historically have been prone to landslide, areas adjacent to lakes, streams,
springs, or any one of the following geologic formations: alluvium, landslide deposit, or Latah
formation;
5. Areas of uncompacted fill;
6. Areas that are unstable as a result of rapid stream or stream bank erosion.
B. Geo -Hazard Evaluation and Mitigation Plan Required.
1. A geo-hazard mitigation plan, prepared by a qualified geo-technical engineer, shall be
prepared for building permits, road construction, utilities and storm drainage facility installations
within a geo-hazard area and shall be submitted with any application for preliminary plats, short
plats, planned development projects, binding site plans, zone reclassifications, conditional use
permits, variances, manufactured home park site plans or top soil removal permits located in
geologic hazard areas.
2. The geo-hazard evaluation shall document the extent and nature of the geo-hazard on the
subject property and shall provide mitigating measures and an assessment of geo-hazards
associated with the proposal.
3. A geo-hazard mitigation plan may be required at the time of building permit application or
actual construction approvals. (Ord. 07-015 § 4, 2007).
21.40.060 Critical aquifer recharge areas.
A. Classification of Aquifer Susceptibility. Critical aquifer recharge areas have prevailing geologic
conditions associated with infiltration rates that create a high potential for contamination of ground
water resources or contribute significantly to the replenishment of ground water.
1. Aquifer recharge areas are rated as having a high, moderate, or low susceptibility based on a
scientific analysis of soils, hydraulic conductivity (the ease with which water moves between the
surface and aquifers), annual rainfall, the depth to aquifers, the importance of the material
between soils and aquifers (vadose zone), and wellhead protection information. The aquifer
susceptibility map identifies these areas within Spokane Valley.
2. Designated wellhead protection areas and areas within a 1,000 -foot radius of wells without
reported plans are additionally treated as high -susceptibility areas. As wellhead protection plans
are completed for wells, the 1,000 -foot radius placeholder will be replaced by the Washington
State Department of Health certified wellhead protection area.
3. Regulated Uses. The following uses and activities are regulated as set forth in the following
table:
Table 21.40-11 — Uses and Activities Regulated in Critical Aquifer Recharge Areas
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Susceptibility Rating
Susceptibility Rating
Susceptibility Ratir
High
Medium
Low
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Chapter 21.40 CRITICAL AREAS
Page 17 of 60
Susceptibility Rating
High
Susceptibility Rating
Medium
Susceptibility Ratir
Low
Bio -solids land application
Critical material storage, handling,
generating or use
Dairy
0+
a.*
Feed lot
Feed mill ♦ o
Floriculture/horticulture a a
Grazing/cultivation A
Greenhouse/nursery — commercial A a •
Large animal raising and/or keeping A +• •
Orchard/tree farm A + •
Poultry raising, commercial
Truck gardening/vineyard •
• = Permitted without review _ = Not permitted * = Hydro -geologic study required
A = Agricultural practices not accessory to a residential use that impact critical aquifer recharge areas shall be
lintip kl{ yitc tvgeefi ti r� ',IweN€gliwnulglmtipAgt property shall be required to comply with
gpimp lli igottg iigt lfi rcrm n,i§Wr Vigp6 #Izg,te&t ay.Jwater, as set forth in the United
a§t*R9 WIReatiaegtataarrieelkifiStlenittolgeworgerbwgriglon Service (NRCS) Technical Guides, and all
i4.9ghM IN rf glr iL li i tai lAWAREINf l `REV8u f1
0+
a
0+ *
ral practices.
c. No disposal of any waste containing critical materials shall be allowed on site.
StRiBlWalgrutsAgkic8WAiggliAVA tbk4rency requirements set forth in the Spokane County
CAPFAliihggq51131iigNI i1i4SfikAbtirfil r ji€BEW /tigaiNgnded, are required for all new resident
gn§448618f,tp&Ngres are enhanced.
3. Surface or subsurface disposal of a critical material is prohibited.
B. If a parcel lies within two or more susceptibility rating designations, the higher susceptibility rating
designation shall apply to the whole parcel.
C. When there are low susceptibility areas hydrologically connected to medium and high -
susceptibility areas, the regulations for medium or high susceptibility areas apply.
D. Development shall provide for the treatment of stormwater runoff from impervious surfaces in a
manner consistent with Spokane Valley requirements and the Stormwater Management Manual for
Eastern Washington.
E. Use, Handling and Storage of Critical Materials.
1. Critical materials, including hazardous material and hazardous wastes, are identified in
Appendix 21-G.
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Chapter 21.40 CRITICAL AREAS
Appendix 21-G
Page 18 of 60
Hazardous
Waste ID
Number
CAS #
Substance Name
Critical
Concentration
pg / L
Critical
Quantity
kg
DOE
Designation
EPA
Hazaa
U091
119-
(1,1'-biphenyl)-4-'-diamine,3,3'-
563
182
DW
D,+
90-4
dimethoxy-
U236
72-
[(3,3' -dimethyl) -(1,1' -biphenyl) -4,4' diyl)]
3.1
1.00
EHW
H,+
57-1
-bis (azo) bis (5 -amino -4 -hydroxy)
-,tetrasodium salt
P039
298-
0,0 -diethyl S-[2-(ethylthio)ethyl]
3.1
1.00
EHW
A
04-4
phosphorodithioate
U087
3288-
0,0 -diethyl S-methyl-dithiophosphate
3.1
1.00
EHW
B
58-2
P040
297-
0,0-diethyl-0-pyrazinyl phosphorothioate
3.1
1.00
EHW
A
97-2
P071
298-
0,0 -dimethyl 0-nitrophenyl
3.1
1.00
EHW
A
00-0
phosphorothioate
P045
39196-
0,0-dimethyl-1-(methylthio)-2-
3.1
1.00
EHW
B
18-4
butanone,0-[(methylamino)carbonyl]
oxime
P026
5344-
1-(o-chlorophenyl)thiourea
3.1
1.00
EHW
A,H
82-1
U208
630-
1,1,1,2 -tetrachloroethane
3.1
1.00
EHW
H
20-6
U226
71-
1,1,1 -trichloroethane
1,100
355
EHW
C,H
55-6
U209
79-
1,1,2,2 -tetrachloroethane
1.7
0.549
EHW
H
34-5
U128
87-
1,1',2,3,4,4' hexachloro-1,3-butadiene
4.47
1.4
EHW
C,H
68-3
U227
79-
1,1,2 -trichloroethane
6
1.94
EHW
C,H
00-5
U137
193-
1,10-(1,2-phenylene)pyrene
563
182
DW
+
39-5
U078
75-
1,1-dichloroethane
3.1
1.00
EHW
C,H,+
35-4
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Chapter 21.40 CRITICAL AREAS
Page 19 of 60
Hazardous
Waste ID
Number
CAS #
Substance Name
Critical
Concentration
pg / L
Critical
Quantity
kg
DOE
Designation
EPA
Hazai
U098
57-
1,1-dimethylhydrazine
563
182
DW
I,+
14-7
P060
465-
1,2,3,4,10,10-hexachloro-1,4,4a,5,8,8a-
3.1
1.00
EHW
B,H
73-6
hexahydro-1,4:5,8 endo, endo-
dimethanophthalene
P004
309-
1,2,3,4,10,10-hexachloro-1,4,4a,5,8,8a-
3.1
1.00
EHW
B,H
00-2
hexahydro-1,4:5,8 endo, exo-
dimethanophthalene
P051
72-
1,2,3,4,10,10-
3.1
1.00
EHW
X,H
20-8
hexachloro-6,7-epoxy-1,4,4a,5,6,7,8,8a-
octahydro-endo, endo,
1,4,5,8-dimethanophthalene
P037
60-
1,2,3,4,10,10-
0.00071
0.001
EHW
X,H,+
57-1
hexachloro-6,7-epoxy-1,4,4a,5,6,7,8,8a-
octahydro-endo, exo,
1,4,5,8-dimethanophthalene
P081
55-
1,2,3-propanetrio, trinitrate-
3.1
1.00
EHW
R,?
63-0
U207
95-
1,2,4,5-tetrachlorobenzene
3.1
1.00
EHW
D,H
94-3
0003
120-
1,2,4-trichlorobenzene
0.0072
0.002
82-1
U085
1464-
1,2:3,4-diepoxybutane
3.1
1.00
EHW
6,1
53-5
U063
53-
1,2:5,6-dibenzanthracene
0.028
0.01
EHW
P,+
70-3
U064
189-
1,2:7,8-dibenzopyrene
0.028
0.01
EHW
P,+
55-9
U018
56-
1,2-Benzanthracene
0.028
0.009
EHW
P,+
55-3
U094
57-
1,2-Benzanthracene, 7,12 -dimethyl-
0.028
0.009
EHW
C,P
97-6
U028
117-
1,2-benzenedicarboxylic acid [bis
563
182
DW
?
81-7
(2 -ethyl -hexyl)] ester
U190
85-
1,2-benzenedicarboxylic acid anhydride
3.1
1.0
EHW
C
44-9
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Chapter 21.40 CRITICAL AREAS
Page 20 of 60
Hazardous
Waste ID
Number
CAS #
Substance Name
Critical
Concentration
lig 1 L
Critical
Quantity
kg
DOE
Designation
EPA
Hazai
U069
84-
1,2-benzenedicarboxylic acid, dibutyl
563
182
DW
D
74-2
ester
U088
84-
1,2-benzenedicarboxylic acid, diethyl
563
182
DW
?
66-2
ester
U102
131-
1,2-benzenedicarboxylic acid, dimethyl
563
182
DW
?
11-3
ester
U107
117-
1,2-benzenedicarboxylic acid, di-n-octyl
563
182
DW
?
84-0
ester
P042
51-
1,2-benzenediol, 4 -[1 -hydroxy-
3.1
1.0
EHW
B
43-4
2-(methylamino)ethyll-
U202
81-
1,2-benzisothiazolin-3-one, 1,1 -dioxide
563
182
DW
+
07-2
and salts
U050
218-
1,2-benzphenanthrene
0.028
0.009
EHW
P,+
01-9
U066
96-
1,2-dibromo-3-chloropropane
0.05
0.02
EHW
C,H,+
12-8
U079
156-
1,2-dichloroethane
7
2.26
EHW
D,H
60-5
U083
78-
1,2-dichloropropane
1.4
0.45
EHW
C,H,I
87-5
U148
123-
1,2-dihydro-3,6-pyridizinedione
563
182
DW
D
33-1
U099
540-
1,2-dimethylhydrazine
3.1
1.00
EHW
C,+,I
73-8
U109
122-
1,2-diphenylhydrazine
0.422
0.14
EHW
C
66-7
U114
111-
1,2-ethanediylbiscarbomothioic acid
3.1
1.00
EHW
B
54-6
U139
9004-
1,2-oxathiolane, 2,2 -dioxide
563
182
DW
+
66-4
P067
75-
1,2-propylenimine
3.1
1.00
EHW
B,+,I
55-8
U182
123-
1,3,5-trioxane, 2,4,5-trimethyl-
563
182
DW
D,I
63-7
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Chapter 21.40 CRITICAL AREAS
Page 21 of 60
Hazardous
Waste ID
Number
CAS #
Substance Name
Critical
Concentration
Ng / L
Critical
Quantity
kg
DOE
Designation
EPA
Hazai
U201
108-
1,3-benzendiol
3.1
1.0
EHW
H
46-3
U130
77-
1,3-cyclopentadiene,
3.1
1.00
EHW
X,H
47-4
1,2,3,4,5,5-hexachloro-
U071
541-
1,3 -dichlorobenzene
20
6.46
EHW
B,H
73-1
U186
504-
1,3-pentadiene
563
182
DW
D,I
60-9
U193
1120-
1,3 -propane sultone
563
182
DW
+
71-4
U197
106-
1,4-cyclohexadienedione
3.1
1.00
EHW
C
51-4
U074
764-
1,4-dichloro-2-Butene
3.1
1.0
EHW
C,H,I
41-0
U074
764-
1,4-dichloro-2-butene
3.1
1.00
EHW
C,H,I
41-0
U072
106-
1,4 -dichlorobenzene
0.3
0.10
EHW
B,H
46-7
U108
123-
1,4-diethylene dioxide
563
182
DW
D,+
91-1
U108
123-
1,4 -dioxane
563
182
DW
D,+
91-1
U166
130-
1,4-naphthalenedione
3.1
1.00
EHW
C
15-4
U166
130-
1,4-naphthaquinone
3.1
1.00
EHW
C
15-4
P002
591-
1 -acetyl -2 -thiourea
3.1
1.00
EHW
B
08-2
U172
924-
1-butanimine, N -butyl -N -nitroso-
563
182
DW
D,+
16-3
U031
71-
1 -butanol
563
182
DW
D,I
36-3
U041
106-
1-chloro-2,3-epoxypropene
3.1
1.00
EHW
C,H,+
89-8
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Chapter 21.40 CRITICAL AREAS
Page 22 of 60
Hazardous
Waste ID
Number
CAS #
Substance Name
Critical
Concentration
lig / L
Critical
Quantity
kg
DOE
Designation
EPA
Hazai
U011
61-
1 H-1,2,4-triazol-3-amine
563
182
DW
D,+
82-5
U186
504-
1-methylbutadiene
563
182
DW
D,I
60-9
U167
134-
1 -naphthylamine
3.1
1.00
EHW
B,+
32-7
U194
107-
1-propanimine
3.1
1.00
EHW
C,I
10-8
U110
142-
1-propanimine, N -propyl-
3.1
1.00
EHW
C,I
84-7
U235
126-
1 -propanol, 2,3-dibromo-, phosphate
3.1
1.00
EHW
D,H
72-7
(3:1)
U126
765-
1 -propanol, 2,3 -epoxy-
3.1
1.00
EHW
C,+
34-4
U140
78-
1 -propanol, 2 -methyl-
563
182
DW
D,I
83-1
U243
1888-
1 -propene, 1,1,2,3,3,3-hexachloro-
3.1
1.00
EHW
H
71-7
U085
1464-
2,2'-bioxirane
3.1
1.0
EHW
B,I
53-5
U132
70-
2,2'-methylenebis (3-4,
3.1
1.00
EHW
C,H
30-4
6trichlorophenol)
U211
56-
2,3,4,6-tetrachlorophenol
3.1
1.00
EHW
C,H
23-5
U232
93-
2,4,5-T
2.0
0.646
EHW
B,H,+
76-5
U230
95-
2,4,5 -trichlorophenol
1.0
0.323
EHW
A,H
95-4
U232
93-
2,4,5-trichlorophenoxyacetic acid
2.0
0.646
EHW
B,H,+
76-5
U231
88-
2,4,6 -trichlorophenol
2.0
0.646
EHW
A,H
06-2
U240
94-
2,4-D, salts and esters
100
32.29
EHW
B,H
75-7
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Chapter 21.40 CRITICAL AREAS
Page 23 of 60
Hazardous
Waste ID
Number
CAS #
Substance Name
Critical
Concentration
lag / L
Critical
Quantity
kg
DOE
Designation
EPA
Hazai
U081
120-
2,4-dichlorophenol
0.3
0.10
EHW
D,H
83-2
U240
94-
2,4-dichlorophenoxyacetic acid, salts
100
32.29
EHW
B,H
75-7
and esters
0001
105-
2,4 -dimethylphenol
400
129
67-9
U101
105-
2,4 -dimethylphenol
400
129
DW
D
67-9
U105
121-
2,4-dinitro toluene
3.1
1.00
EHW
C
14-2
P048
51-
2,4-dinitrophenol
70
22.61
EHW
B
28-5
0006
121-
2,4-dinitrotoluene
1.1
0.355
14-2
P049
541-
2,4-thiobiuret
423
136.60
EHW
A
53-7
U147
108-
2,5-Furandione
3.1
1.00
EHW
C
31-6
U082
87-
2,6-dichlorophenol
3.1
1.00
EHW
D,H
65-0
U106
606-
2,6-dinitrotoluene
3.1
1.00
EHW
C
20-2
0007
606-
2,6-dinitrotoluene
1.1
0.355
20-2
U236
72-
2,7-naphthalenedisulfonic acid 3,3'
3.1
1.00
EHW
H,+
57-1
U005
53-
2-acetylaminofluorine
563
182
DW
?
96-3
U159
78-
2-butanone
563
182
DW
D,I
93-3
U160
1338-
2-butanone peroxide
3.1
1.0
EHW
C,R
23-4
U053
4170-
2-butenal
3.1
1.0
EHW
B,I
30-3
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Chapter 21.40 CRITICAL AREAS
Page 24 of 60
Hazardous
Waste ID
Number
CAS #
Substance Name
Critical
Concentration
lig 1 L
Critical
Quantity
kg
DOE
Designation
EPA
Hazai
U042
110-
2-chloroethyl vinyl ether
3.1
1.00
EHW
C,H
75-8
U125
98-
2-furancarboxaldehyde
3.1
1.00
EHW
C,I
01-1
U058
50-
2H-1, 3,2-Oxaphosphorine, 2 -[bis
3.1
1.00
EHW
C,H,I
18-0
(2-chloro-ethyl)amino]tetrahydro-, oxide
2-
U116
96-
2-imidazolidinethione
563
182
DW
D,+
45-7
P067
75-
2-methylazindine
3.1
1.00
EHW
B,=,1
55-8
P069
75-
2-methyllactonitrite
3.1
1.00
EHW
A
86-5
U168
91-
2 -naphthylamine
3.1
1.00
EHW
B,+
59-8
U026
494-
2 -naphthylamine, N,N'-bis(2-chloro-
3.1
1.00
EHW
H,+
03-1
methyl) -
U171
79-
2-nitropropane
3.1
1.00
EHW
C,1
46-9
U191
109-
2-picoline
3.1
1.00
EHW
C
06-8
U002
67-
2-propanone
563
182
DW
D,l
64-1
P005
107-
2-propen-1-ol
10
3.23
EHW
B,I
18-6
P003
107-
2-propenal
3.1
1.00
EHW
X
02-8
U009
107-
2-propenenitrile
3.1
1.00
EHW
C,+,I
13-1
U152
126-
2-propenenitrile, 2 -methyl
3.1
1.00
EHW
B,I
98-7
U118
97-
2-propenoic acid, 2 -methyl-, ethyl ester
563
182
DW
D
63-2
U162
80-
2-propenoic acid, 2 -methyl-, methyl
563
182
DW
D,I
62-6
ester
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Chapter 21.40 CRITICAL AREAS
Page 25 of 60
Hazardous
Waste ID
Number
CAS #
Substance Name
Critical
Concentration
pg / L
Critical
Quantity
kg
DOE
Designation
EPA
Hazai
U113
140-
2-propenoic acid, ethyl ester
563
182
DW
D,I
88-5
P102
107-
2-propyn-1-ol
3.1
1.00
EHW
X
19-7
P007
2763-
3(2H)-isoxazolone, 5-(aminomethyl)-
3.1
1.00
EHW
B
96-4
P001
81-
3-(alpha-acetonylbenzyl)-4-
3.1
1.00
EHW
A
81-2
hydroxycoumarin and salts
U073
91-
3,3'-dichlorobenzidine
0.028
0.009
EHW
H,+
94-1
U091
119-
3,3'-dimethoxybenzidine
563
182
DW
D,+
90-4
U095
119-
3,3'-dimethylbenzidine
3.1
1.00
EHW
C,+
93-7
U016
225-
3,4-benzacridine
0.028
0.009
DW
+
51-4
U022
50-
3,4 -benzopyrene
0.028
0.009
EHW
P,+
32-8
U192
23950-
3,5-dichloro-N-(1,1-dimethyl-2-propynyl)
563
182
DW
58-5
benzamide
P027
542-
3-chloropropionitrile
3.1
1.00
EHW
B,H
76-7
U157
56-
3-methylcholanthrene
0.028
0.009
EHW
H,P
49-5
U164
56-
4(1H)-pyrimidinone, 2,3-dihydro-
563
182
DW
+
04-2
U021
92-
4,4'-diamino-1,1'-biphenyl
0.00116
0.001
EHW
B,+
87-5
U073
91-
4,4'-diamino-3,3'-dichloro-1,1'-biphenyl
0.028
0.009
EHW
H,+
94-1
U095
119-
4,4'-diamino-3,3'-dimethyl-1,1'-biphenyl
3.1
1.0
EHW
C,+
93-7
U158
101-
4,4'-methylenebis (2-chloroaniline)
3.1
1.00
EHW
H,+
14-4
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Chapter 21.40 CRITICAL AREAS
Page 26 of 60
Hazardous
Waste ID
Number
CAS #
Substance Name
Critical
Concentration
pg / L
Critical
Quantity
kg
DOE
Designation
EPA
Hazai
U089
56-
4,4'-stilbenediol, alpha, alpha' -diethyl-
563
182
DW
+
53-1
P047
534-
4,6-dinitro-o-cresol and salts
13.4
4.33
EHW
B
52-1
P034
131-
4,6-dinitro-o-cyclohexylphenol
3.1
1.00
EHW
C
89-5
P059
76-
4,7-methano-1H-
0.028
0.01
EHW
X,H,+
44-8
indene,1,4,5,6,7,8,8-heptachloro-
3a,4,7,7a-tetrahydro-
U036
57-
4,7-methanoindan,
3.1
1.00
EHW
X,H
74-9
1,2,3,4,5,6,7,8,8-octachloro-3a,4,7,7a-
tetrahydro-
U035
305-
4-[bis(2-chloro-ethyl)amino]
3.1
1.0
EHW
H+
03-3
benzene-1,3-butanoic acid
P008
504-
4-Aminopyridine
3.1
1.0
EHW
B
24-5
U030
101-
4-bromophenyl phenyl ether
3.1
1.0
EHW
H
55-3
U039
59-
4 -chloro -m -cresol
3.1
1.00
EHW
H
50-7
U049
3165-
4 -chloro -o -toluidine, hydrochloride
3.1
1.00
EHW
H
93-3
U161
108-
4-methyl-2-pentanone
563
182
DW
+
10-1
P008
504-
4-pyridinamine
3.1
1.00
EHW
B
24-5
U059
20830-
5,12-naphthacenedione, (8S -cis) -8-
0.028
0.009
DW
+
81-3
acetyl-10-[(3-amino-2,3,6-trihydroxy-
alpha-L-Iyxo-hexapyranosy)oxyl]
-7,8,9,10-tetrahydro-6, 8,11-trihydroxy-1-
methoxy-
P007
2763-
5-Aminomethyl-3-isoxazolol
3.1
1.0
EHW
B
96-4
U181
99-
5 -nitro -o -toluidine
563
182
DW
D
55-8
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Chapter 21.40 CRITICAL AREAS
Page 27 of 60
Hazardous
Waste ID
Number
CAS #
Substance Name
Critical
Concentration
lag /L
Critical
Quantity
kg
DOE
Designation
EPA
Hazai
P050
115-
5-norborene-2,3-dimethanol,
3.1
1.00
EHW
X,H
29-7
1,4,5,6,7,7-hexachloro, cyclic sulfite
U094
57-
7,12-dimethylbenz[a]anthracene
0.028
0.01
EHW
C,P
97-6
P088
145-
7-oxabicyclo[2,2,1]heptane,
3.1
1.00
EHW
B
73-3
2,3-dicarboxlic acid
U001
75-
Acetaldehyde
3.1
1.00
EHW
C
07-0
U023
98-
acetaldehyde, chloro
3.1
1.00
EHW
B,H
07-7
U034
75-
acetaldehyde, trichloro
3.1
1.00
EHW
H
87-6
P057
640-
acetamide, 2 -fluoro-
3.1
1.00
EHW
B,H
19-7
U187
62-
acetamide, N-(4-ethoxyphenyl)-
563
182
DW
D,+
44-2
P002
591-
acetamide, N-(aminothioxomethyl)-
3.1
1.00
EHW
B
08-2
U005
53-
acetamide, N-9H-fluoren-2-yl-
0.028
0.009
DW
?
96-3
P058
62-
acetic acid fluoro-, sodium salt
3.1
1.00
EHW
A,H
74-8
U112
141-
acetic acid, ethyl ester
563
182
DW
D,I
78-6
U144
301-
Acetic acid, lead salt
3.1
1.00
EHW
D,E,P
04-2
U214
563-
acetic acid, thallium salt
563
182
DW
?
68-8
P066
16752-
Acetimidic acid, N[(methylcarbonyl)]
3.1
1.00
EHW
B
77-5
thio-, methyl ester
U003
75-
Acetonitrile
3.1
1.00
EHW
C,I
05-8
U004
98-
acetophenone
563
182
DW
D
86-2
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Chapter 21.40 CRITICAL AREAS
Page 28 of 60
Hazardous
Waste ID
Number
CAS #
Substance Name
Critical
Concentration
lag / L
Critical
Quantity
kg
DOE
Designation
EPA
Hazai
U006
75-
Acetyl chloride
3.1
1.00
EHW
C,H,C
36-5
P003
107-
Acrolein
0.32
0.103
EHW
X
02-8
U007
79-
Acrylamide
3.1
1.00
EHW
C
06-1
U008
79-
Acrylic acid
3.1
1.00
EHW
C,0,1
10-7
U009
107-
Acrylonitrile (Vinyl cyanide)
0.58
0.187
EHW
C,+,I
13-1
U002
67-
Actone
563
182
DW
D,I
64-1
U150
148-
alanine, 3-[p-bis(2-chloroethyl) amino]
563
182
DW
+
82-3
phenyl-, L -
P070
116-
Aldicarb
3.1
1.0
EHW
B
06-3
P004
309-
Aldrin
0.00074
0.0002
EHW
X,H
00-2
P005
107-
Allyl alcohol
3.1
1.0
EHW
B,I
18-6
U096
80-
alpha,alpha-dimethylbenzyl-
3.1
1.00
EHW
C,R
15-9
hydroperoxide
P046
122-
alpha,alpha-dimethylphenethylamine
3.1
1.00
EHW
C
09-8
(a,a-dimethylphenethylamine)
U167
134-
alpha -naphthylamine
3.1
1.00
EHW
B,+
32-7
P072
86-
alpha-naphthylthiourea
3.1
1.00
EHW
B
88-4
P006
20859-
Aluminum phosphide
3.1
1.0
EHW
B,R
73-8
U011
61-
Amitrole
563
182
DW
D,+
82-5
1001
7664-
ammonium salts, NEC
500
162
41-7
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Chapter 21.40 CRITICAL AREAS
Page 29 of 60
Hazardous
Waste ID
Number
CAS #
Substance Name
Critical
Concentration
pg / L
Critical
Quantity
kg
DOE
Designation
EPA
Hazat
P119
7803-
Ammonium vanadate
3.1
1.0
EHW
B
55-6
U012
62-
Aniline
3.1
1.00
EHW
C,I
53-3
1010
7440-
antimony salts, NEC
0.145
0.05
36-0
P012
1327-
Arsenic (111) oxide
66
21.3
EHW
B,+
53-3
P011
1303-
Arsenic (V) oxide
77
24.9
EHW
B
28-2
P010
7778-
Arsenic acid
72
23.3
EHW
B
39-4
P011
1303-
Arsenic pentoxide
77
24.9
EHW
B
28-2
1011
7440-
arsenic salts, NEC
50
16.15
38-2
P012
1327-
Arsenic trioxide
66
21.3
EHW
B,+
53-3
P038
692-
arsine, diethyl
3.1
1.0
EHW
B
42-2
U014
492-
Auramine
563
182
DW
+
80-8
U015
115-
Azaserine
3.1
1.00
EHW
C,+
02-6
P054
151-
Azirdine
3.1
1.0
EHW
B+
56-4
U010
50-
Azirino (2',3:3,4)pyrrolo(1,2a)in
3.1
1.0
EHW
B+
07-7
dole-4,7-dione, 6-amino-8[((amino
carbonyl)oxy) methyl]-1,1a,2,8,8a,8b-
hexahydro-8a-methoxy-5-methyl
P013
542-
Barium cyanide
727
234.8
EHW
A
62-1
1012
7440-
barium salts, NEC
1,000
322.93
39-3
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Chapter 21.40 CRITICAL AREAS
Page 30 of 60
Hazardous
Waste ID
Number
CAS #
Substance Name
Critical
Concentration
pg / L
Critical
Quantity
kg
DOE
Designation
EPA
Hazai
U018
56-
Benz[a]anthracene
0.028
0.009
EHW
P,+
55-3
U016
225-
benz[c]acridine
0.028
0.009
DW
+
51-4
U157
56-
benz[j]aceanthrylene, 1,2-dihydro-3-
0.028
0.009
EHW
H,P
49-5
methyl -
U017
98-
Benzal chloride
3.1
1.0
EHW
D,H
87-3
U012
62-
Benzenamine
3.1
1.00
EHW
C,I
53-3
U222
636-
benzenamine, 2 -methyl-, hydrochloride
563
182
DW
D,+
21-5
U181
99-
benzenamine, 2 -methyl -5 -nitro-
563
182
DW
D
55-8
U014
492-
benzenamine, 4,4-carbonimidoylbis
563
182
DW
+
80-8
(N,N-dimethyl)-
U158
101-
benzenamine, 4,4-methylenebis
3.1
1.0
EHW
H,+
14-4
(2 -chloro) -
U049
3165-
benzenamine, 4 -chloro -2 -methyl-
3.1
1.0
EHW
H
93-3
U093
60-
benzenamine, N,N-dimethyl-4-
3.1
1.0
EHW
C,+
11-7
phenylazo-
P024
106-
benzenamine,4-chloro-
3.1
1.0
EHW
C,H
47-8
U019
71-
benzene
6.7
2.2
EHW
C,+,I
43-2
U207
95-
benzene, 1,2,4,5-tetrachloro-
3.1
1.0
EHW
D,H
94-3
U070
95-
benzene, 1,2-dichloro
10
3.2
EHW
B,H
50-1
U203
94-
benzene, 1,2-methylenedioxy-4-allyl-
563
182
DW
D,+
59-7
U141
120-
benzene, 1,2-methylenedioxy-4-
563
182
DW
D,+
58-1
propenyl-
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Chapter 21.40 CRITICAL AREAS
Page 31 of 60
Hazardous
Waste ID
Number
CAS #
Substance Name
Critical
Concentration
lag / L
Critical
Quantity
kg
DOE
Designation
EPA
Hazai
U090
94-
benzene, 1,2-methylenedioxy-4-propyl-
563
182
DW
D,+
58-6
U234
99-
benzene, 1,3,5-trinitro-
563
182
DW
D,R
35-4
U071
541-
benzene, 1,3-dichloro
20
6.5
EHW
B,H
73-1
U223
26471-
benzene, 1,3-diisocyanatomethyl-
3.1
1.0
EHW
C,I
62-5
U072
106-
benzene, 1,4-dichloro
0.3
0.1
EHW
B,H
46-7
U030
101-
benzene, 1-bromo-4-phenoxy-
3.1
1.0
EHW
H
55-3
U105
121-
benzene, 1-methyl-2,4-dinitro-
1.1
0.4
EHW
C
14-2
U106
606-
benzene, 1-methyl-2,6-dinitro-
1.1
0.4
EHW
C
20-2
U055
98-
benzene, 1-methylethyl-
3.1
1.0
EHW
C,I
82-8
U037
108-
benzene, chloro-
72
23.3
EHW
B,H,I
90-7
P028
100-
benzene, chloromethyl-
3.1
1.0
EHW
B,H,+
44-7
U017
98-
benzene, dichloromethyl
3.1
1.0
EHW
D,H
87-3
U239
1330-
benzene, dimethyl-
3.1
1.0
EHW
C,I
20-7
U127
118-
benzene, hexachioro-
7,200
2,325.1
EHW
H
74-1
U056
110-
benzene, hexahydro-
3.1
1.0
EHW
C,I
82-7
U188
108-
benzene, hydroxy-
3.1
1.0
EHW
C
95-2
U169
98-
benzene, nitro-
19,800
6,394.1
EHW
C,I
95-3
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Chapter 21.40 CRITICAL AREAS
Page 32 of 60
Hazardous
Waste ID
Number
CAS #
Substance Name
Critical
Concentration
pg / L
Critical
Quantity
kg
DOE
Designation
EPA
Hazai
U183
608-
benzene, pentachloro-
3.1
1.0
EHW
H
93-5
U185
82-
benzene, pentachloronitro-
3.1
1.0
EHW
D,H,+
68-8
U023
98-
benzene, trichloromethyl-
3.1
1.0
EHW
H2O,F
07-7
U038
510-
Benzeneacetic acid, 4 -chloro-
3.1
1.0
EHW
H
15-6
alpha-(4-chlorophenyl)-alpha-hydroxy,
ethyl ester
P077
100-
benzeneamine, 4 -nitro-
3.1
1.0
EHW
D,?
01-6
U020
98-
Benzenesulfonic acid chloride
3.1
1.0
EHW
D,H,C
09-9
U020
98-
Benzenesulfonyl chloride
3.1
1.0
EHW
D,H,C
09-9
P014
108-
Benzenethiol
3.1
1.0
EHW
A
98-5
U021
92-
Benzidine
0.00116
0.000
EHW
B,+
87-5
U022
50-
Benzo[a]pyrene
0.028
0.009
EHW
P,+
32-8
U120
206-
benzo[j,k]fluorene
0.028
0.009
DW
D
44-0
U023
98-
benzotrichloride
3.1
1.0
EHW
H2O,F
07-7
P028
100-
Benzyl chloride
3.1
1.0
EHW
B,H,+
44-7
P015
7440-
Beryllium dust
0.037
0.012
EHW
C,+
41-7
1013
7440-
beryllium salts, NEC
0.037
0.01
41-7
U047
91-
beta-chloronaphthalene
0.028
0.009
EHW
D,H
58-7
(f3-chloronaphthalene)
U168
91-
beta -naphthylamine
3.1
1.00
EHW
B,+
59-8
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Chapter 21.40 CRITICAL AREAS
Page 33 of 60
Hazardous
Waste ID
Number
CAS #
Substance Name
Critical
Concentration
pg / L
Critical
Quantity
kg
DOE
Designation
EPA
Hazai
U220
108-
benzene, methyl-
3.1
1.0
EHW
C,I
88-3
0010
111-
bis (2-chloroethyl) ether
0.3
0.097
44-4
U024
111-
bis(2-chloroethoxy)methane
3.1
1.0
EHW
C,H
91-1
U027
108-
bis(2-chloroisopropyl)ether
3.1
1.0
EHW
C,H,C
60-1
U016
225-
bis(2-chloromethyl)ether
0.000037
0.001
EHW
B,H,+
51-4
0002
117-
bis-(2-ethylhexyl) phthalate
15,000
4,845
81-7
U028
117-
bis(2-ethylthoxyl)phthalate
563
182
DW
?
81-7
U244
137-
bis(dimethylthiocarbonmoyl) 0 -disulfide
563
182
DW
D
26-8
1014
boron salts, NEC
10
3.23
U256
506-
Bromine cyanide
815
263.2
EHW
C,H
68-3
P017
598-
Bromoacetone
3.1
1.0
EHW
C,H
31-2
U225
75-
Bromoform
3.1
1.0
EHW
H
25-2
P018
357-
Brucine
3.1
1.0
EHW
A
57-3
U136
75-
cacodylic acid
DW
D
60-5
1015
7440-
cadmium salts, NEC
10
3.23
43-9
U032
13765-
Calcium chromate
196
63.3
EHW
C,+,E
19-0
P021
592-
Calcium cyanide
508
164.1
EHW
B
01-8
1008
7440-
calcium salts, NEC
7,000
2,260.54
70-2
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Chapter 21.40 CRITICAL AREAS
Page 34 of 60
Hazardous
Waste ID
Number
CAS #
Substance Name
Critical
Concentration
pg / L
Critical
Quantity
kg
DOE
Designation
EPA
Hazai
U238
51-
Carbamic acid, ethyl ester
563
182
DW
+
79-6
U178
105-
Carbamic acid, methylnitroso-, ethyl
3.1
1.00
EHW
C,+
40-8
ester
P103
630-
carbamimidoselenoic acid
3.1
1.00
EHW
B
10-4
P022
75-
carbon bisulfide
3.1
1.00
EHW
D,I,?
15-0
P022
75-
carbon disulfide
3.1
1.00
EHW
D,I,?
15-0
U033
353-
carbon oxyfluoride
3.1
1.00
EHW
H,R
50-4
U211
56-
carbon tetrachloride
45
14.5
EHW
C,H,+
23-5
U156
79-
carbonchloridic acid, methyl ester
3.1
1.00
EHW
B,H,I
22-1
U215
6533-
carbonic acid, dithallium (I) salt
563
182
DW
?
73-9
P095
75-
Carbonyl chloride
3.1
1.00
EHW
B,H
44-5
U033
353-
Carbonyl fluoride
3.1
1.00
EHW
B,H,R
50-4
U034
75-
chloral
563
182
DW
?
87-6
U035
305-
Chlorambucil
3.1
1.00
EHW
H,+
03-3
U036
57-
Chlordane, technical
3.1
1.00
EHW
X,H
74-9
1002
chloride salts, NEC
800
258.35
P033
506-
Chlorine cyanide
488
157.6
EHW
A,H
77-4
U026
494-
Chlornaphazine
0.028
0.009
EHW
H,+
03-1
P023
107-
chloroacetaldehyde
3.1
1.00
EHW
B,H
20-0
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,Chapter 21.40 CRITICAL AREAS
Page 35 of 60
Hazardous
Waste ID
Number
CAS #
Substance Name
Critical
Concentration
lag / L
Critical
Quantity
kg
DOE
Designation
EPA
Hazai
U037
108-
chlorobenzene
72
23.3
EHW
B,H,I
90-7
U044
67-
chloroform
1.9
0.614
EHW
C,H,+
66-3
U046
107-
chloromethyl, methyl ether
3.1
1.00
EHW
D,H+
30-2
U032
13765-
chromic acid, calcium salt
196
63.3
EHW
C,H,+
19-0
1016
7440-
chromium salts, NEC
50
16.15
47-3
U050
218-
chrysene
0.028
0.009
EHW
P,+
01-9
P029
544-
copper cyanides
688
222.18
EHW
B
92-3
1017
7440-
copper salts, NEC
1,000
323
50-8
U051
8001-
creosote
3.1
1.00
EHW
B
58-9
U052
1319-
Cresols
3.1
1.00
EHW
B
77-3
U052
1319-
cresylic acid
3.1
1.00
EHW
B
77-3
U053
4170-
crotonaldehyde
3.1
1.00
EHW
B,I
30-3
U055
98-
cumene
3.1
1.00
EHW
C,I
82-8
1003
cyanide salts, NEC
200
64.59
P031
460-
cyanogen
3.1
1.00
EHW
B,I
19-5
U246
506-
cyanogen bromide
3.1
1.00
EHW
C,H
68-3
P033
506-
cyanogen chloride
3.1
1.00
EHW
A,H
77-4
U056
110-
cyclohexane
3.1
1.00
EHW
C,I
82-7
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Chapter 21.40 CRITICAL AREAS
Page 36 of 60
Hazardous
Waste ID
Number
CAS #
Substance Name
Critical
Concentration
pg / L
Critical
Quantity
kg
DOE
Designation
EPA
Hazai
U057
108-
cyclohexanone
3.1
1.00
EHW
C,I
94-1
U058
50-
Cyclophosphamide
3.1
1.00
EHW
C,H,+
18-0
U059
20830-
Daunomycin
563
182
DW
+
81-3
U060
72-
DDD
3.1
1.00
EHW
C,H,+
54-8
U061
50-
DDT
0.00024
0.001
EHW
X,H,+
29-3
U142
143-
Decachloroctahydro-1,3,4-metheno-2H-
0.028
0.01
EHW
X,H
50-0
cyclobuta[c,d]-pentalen-2-one
U206
18883-
D -glucopyranose, 2 -deoxy -2(3 -methyl-
563
182
DW
+
66-4
3-nitrosoureido)-
U062
2303-
Diallate
3.1
1.00
EHW
C,H,+
16-4
U133
302-
Diamine
3.1
1.00
EHW
B,+,R
01-2
U063
53-
dibenz[a,h]anthracene
0.028
0.01
EHW
P,+
70-3
U064
189-
dibenz[a,i]pyrene
0.028
0.01
EHW
P,+
55-9
U069
84-
dibutyl phthalate
34,000
10,982
DW
D
74-2
U060
72-
dichloro diphenyl dichloroethane
3.1
1.00
EHW
C,H,+
54-8
U061
50-
dichloro diphenyl trichloroethane
0.00024
0.001
EHW
X,H,+
29-3
U075
75-
dichlorodifluoromethane
1,600
516.70
EHW
H
71-8
U025
111-
dichloroethyl ether
3.1
1.00
EHW
C,H
44-4
P036
696-
dichlorophenylarsine
3.1
1.00
EHW
B,H
28-6
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Chapter 21.40 CRITICAL AREAS
Page 37 of 60
Hazardous
Waste ID
Number
CAS #
Substance Name
Critical
Concentration
pg / L
Critical
Quantity
kg
DOE
Designation
EPA
Hazat
P037
60-
dieldrin
0.00071
0.001
EHW
X,H,+
57-1
0021
diesel (fuel oil)
1,000
323
U088
84-
diethyl phthalate
352,000
113,696
DW
?
66-2
P038
692-
diethylarsine
89
28.74
EHW
B
42-2
P041
311-
diethyl-p-nitrophenyl phosphate
3.1
1.00
EHW
A
45-5
U089
56-
diethylstilbestrol
563
182
DW
+
53-1
U090
94-
dihydrosafrole
563
182
DW
D,+
58-6
P043
55-
diisopropyl flurophosphate
3.1
1.00
EHW
B,H
91-4
P044
60-
dimethoate
3.1
1.00
EHW
A
51-5
U097
79-
dimethyl carbamoyl chloride
3.1
1.00
EHW
D,H,+
44-7
U102
131-
dimethyl phthalate
313,000
101,099
DW
?
11-3
U103
77-
dimethyl sulfate
3.1
1.00
EHW
C,0,+
78-1
U092
124-
dimethylamine
3.1
1.00
EHW
C,I
40-3
U093
60-
dimethylaminobenzene
3.1
1.00
EHW
C,+
11-7
U097
79-
dimethylcarbomoyl chloride
3.1
1.00
EHW
D,H,+
44-7
P082
62-
dimethylnitrosamine
3.1
1.00
EHW
B,+
75-9
U107
117-
di-n-octyl phthalate
563
182
DW
?
84-0
P020
88-
Dinoseb
3.1
1.00
EHW
B
85-7
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Chapter 21.40 CRITICAL AREAS
Page 38 of 60
Hazardous
Waste ID
Number
CAS #
Substance Name
Critical
Concentration
pg / L
Critical
Quantity
kg
DOE
Designation
EPA
Hazai
U111
621-
di-n-propylnitrosamine
3.1
1.00
EHW
C,+
64-7
P035
152-
diphosphoramide, octamethyl
3.1
1.00
EHW
?
16-9
U110
142-
dipropylamine
3.1
1.00
EHW
C,I
84-7
P039
298-
disulfoton
3.1
1.00
EHW
A
04-4
P109
3689-
dithiopyrophosphoric acid tetraethyl
3.1
1.00
EHW
A
24-5
ether
P050
115-
endosulfan
75
24.22
EHW
X,H
29-7
P088
145-
Endothall
3.1
1.00
EHW
B
73-3
P051
72-
Endrin
0.2
0.06
EHW
X,H
20-8
P042
51-
Epinephrine
3.1
1.00
EHW
B
43-4
U001
75-
Ethanal
3.1
1.00
EHW
C
07-0
P046
122-
ethanamine, 1,1 -dimethyl -2 -phenyl
3.1
1.00
EHW
C
09-8
U174
55-
ethanamine, N -ethyl -N -nitroso-
3.1
1.00
EHW
C,+
18-5
U131
67-
ethane, 1,1,1,2,2,2-hexachloro-
3.1
1.00
EHW
H
72-1
U208
630-
ethane, 1,1,1,2-tetrachloro
3.1
1.00
EHW
H
20-6
U247
72-
ethane, 1,1,1-trichloro-2,2-bis
3.1
1.00
EHW
D,H
43-5
(b-methoxyphenyl)
U209
79-
ethane, 1,1,2,2-tetrachloro
1.7
0.55
EHW
H
34-5
U227
79-
ethane, 1,1,2-trichloro-
6
1.94
EHW
C,H
00-5
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Chapter 21.40 CRITICAL AREAS
Page 39 of 60
Hazardous
Waste ID
Number
CAS #
Substance Name
Critical
Concentration
pg / L
Critical
Quantity
kg
DOE
Designation
EPA
Hazai
U024
111-
ethane, 1,1'-[methylenebis(oxy)]bis
3.1
1.00
EHW
C,H
91-1
[2 -chloro-]
U076
75-
ethane, 1,1-dichloro-
3.1
1.00
EHW
D,H
34-3
U117
60-
ethane, 1,1'-oxybis-
563
182
DW
D,I
29-7
U025
111-
ethane, 1,1'-oxybis [2 -chloro-
3.1
1.00
EHW
C,H
44-4
U067
106-
ethane, 1,2-dibromo-
0.55
0.18
EHW
C,H,+
93-4
U077
107-
ethane, 1,2-dichloro-
7
2.26
EHW
D,H
06-2
U042
110-
ethane, 2-chlorethoxy-
3.1
1.00
EHW
C,H
75-8
U043
75-
ethane, chloro-
3.1
1.00
EHW
D,H,+
01-4
U184
76-
ethane, pentachloro-
3.1
1.00
EHW
A,H
01-7
U003
75-
ethanenitrile
3.1
1.00
EHW
C
05-8
U218
62-
ethanethioamide
563
182
DW
+
55-5
U173
1116-
ethanol, 2,2-(nitrosoimino)bis-
563
182
DW
+
54-7
U004
98-
ethanone, 1 -phenyl-
563
182
DW
D
86-2
U006
75-
ethanoyl chloride
3.1
1.00
EHW
C,H,C
36-5
P084
4549-
ethenamine, N -methyl -N -nitroso-
3.1
1.00
EHW
B,+
40-0
U210
127-
ethene, 1,1,2,2-tetrachloro-
1.7
0.55
EHW
C,H
18-4
U078
75-
ethene, 1,1-dichloro-
3.1
1.00
EHW
C,H,+
35-4
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Chapter 21.40 CRITICAL AREAS
Page 40 of 60
Hazardous
Waste ID
Number
CAS #
Substance Name
Critical
Concentration
pg / L
Critical
Quantity
kg
DOE
Designation
EPA
Hazai
U079
156-
ethene, trans-1,2-dichloro-
3.1
1.00
EHW
D,H
60-5
U038
510-
ethyl4,4'-dichlorobenzilate
3.1
1.00
EHW
D,H
15-6
U112
141-
ethyl acetate
563
182
DW
D,I
78-6
U113
140-
ethyl acrylate
563
182
DW
D,I
88-5
0004
100-
ethyl benzene
100
32.3
41-4
U238
51-
ethyl carbamate (urethane)
563
182
DW
+
79-6
P101
107-
ethyl cyanide
393
126.91
EHW
B
12-0
U117
60-
ethyl ether
563
182
DW
D,I
29-7
U118
97-
ethyl methacrylate
563
182
DW
I
63-2
U119
62-
ethyl methanesulfonate
563
182
DW
+
50-0
U067
106-
ethylene dibromide
3.1
1.00
EHW
C,H
93-4
U077
107-
ethylene dichloride
3.1
1.00
EHW
D,H
06-2
0017
107-
ethylene glycol
100
32.3
21-1
U115
75-
ethylene oxide
3.1
1.00
EHW
C,I
21-8
U116
96-
ethylene thiourea
563
182
DW
D,+
45-7
U114
111-
Ethylenebis(dithiocarbamic acid), salts
3.1
1.00
EHW
B
54-6
and esters
P054
151-
ethylenimine
3.1
1.00
EHW
B,+
56-4
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Chapter 21.40 CRITICAL AREAS
Page 41 of 60
Hazardous
Waste ID
Number
CAS #
Substance Name
Critical
Concentration
pg / L
Critical
Quantity
kg
DOE
Designation
EPA
Hazai
U076
75-
ethylidine dichloride
3.1
1.00
EHW
D,H
34-3
U097
79-
Famphur
3.1
1.00
EHW
A
44-7
U139
9004-
ferric dextran
563
182
DW
+
66-4
U120
206-
fluoranthene
42
13.6
DW
D
44-0
1004
fluoride salts, NEC
200
64.59
P056
7782-
fluorine
3.1
1.00
EHW
B
41-4
P057
640-
fluoroacetamide
3.1
1.00
EHW
B,H
19-7
P058
62-
fluoroacetic acid, sodium salt
3.1
1.00
EHW
A,H
74-8
U122
50-
formaldehyde
3.1
1.00
EHW
C
00-0
U123
64-
formic acid
563
182
DW
D,O
18-6
U124
110-
fufuran
563
182
DW
I
00-9
P065
628-
fulminic acid, mercury (II) salt
3.2
1.03
EHW
R,?
86-4
U124
110-
furan
563
182
DW
1
00-9
U213
109-
furan, tetrahydro
563
182
DW
I
99-9
U125
98-
Furfural
3.1
1.00
EHW
C,I
01-1
0020
gasoline
1,000
323
U126
765-
glycidaldehyde
3.1
1.00
EHW
C,+
34-4
U163
70-
guanidine, N -nitroso -N -methyl -N' -nitro-
3.1
1.00
EHW
C,+
25-7
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Chapter 21.40 CRITICAL AREAS
Page 42 of 6G
Hazardous
Waste ID
Number
CAS #
Substance Name
Critical
Concentration
pg 1 L
Critical
Quantity
kg
DOE
Designation
EPA
Hazai
P059
76-
Heptachlor
0.00278
0.001
EHW
X,H,+
44-8
U127
118-
hexachlorobenzene
0.0072
0.002
EHW
H
74-1
U128
87-
hexachlorobutadiene
4.47
1.44
EHW
C,H
68-3
U129
58-
hexachlorocyclohexane (gamma
0.123
0.040
EHW
H,+
89-9
isomer)
P130
77-
hexachlorocyclopentadiene
3.1
1.00
EHW
X,H
47-4
U131
67-
hexachloroethane
19
6.14
EHW
H
72-1
P060
465-
hexachlorohexahydro-endo,endo-
3.1
1.00
EHW
B,H
73-6
dimethanonaphthalene
U132
70-
hexachlorophene
3.1
1.00
EHW
C,H
30-4
U243
1888-
hexachlororpropene
3.1
1.00
EHW
H
71-7
P062
757-
hexethyl tetraphosphate
3.1
1.00
EHW
B
58-4
U133
302-
Hydrazine
3.1
1.00
EHW
B,+,R
01-2
U098
57-
hydrazine, 1,1 -dimethyl-
563
182
DW
I,+
14-7
U086
1615-
hydrazine, 1,2 -diethyl-
563
182
DW
+
80-1
U099
540-
hydrazine, 1,2 -dimethyl
3.1
1.00
EHW
C,+,I
73-8
U109
122-
hydrazine, 1,2 -diphenyl
0.422
0.136
EHW
C
66-7
P068
60-
hydrazine, methyl
3.1
1.00
EHW
A,I
34-4
P116
79-
hydrazinecarbothioamide
3.1
1.00
EHW
B
19-6
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Chapter 21.40 CRITICAL AREAS
Page 43 of 60
Hazardous
Waste ID
Number
CAS #
Substance Name
Critical
Concentration
pg / L
Critical
Quantity
kg
DOE
Designation
EPA
Hazai
P063
74-
hydrocyanic acid
208
67.17
EHW
A
90-8
U134
7664-
hydrofluoric acid
563
182
DW
D,O
39-3
P063
74-
hydrogen cyanide
208
67.17
EHW
A
90-8
U134
7664-
hydrogen fluoride
563
182
DW
D,O
39-3
P096
7803-
hydrogen phosphide
3.1
1.00
EHW
B,I
51-2
U135
7783-
hydrogen sulfide
3.1
1.00
EHW
B,I
06-4
U096
80-
hydroperoxide, 1-methyl-1-phenylethyl-
3.1
1.00
EHW
C,R
15-9
U136
75-
hydroxydimethylarsine oxide
563
182
DW
D
60-5
U137
193-
indeno[1,2,3-cd]pyrene
0.028
0.009
DW
+
39-5
U245
53-
indomethacin
0.028
0.01
EHW
B,H
86-1
U139
9004-
iron dextran
563
182
DW
+
66-4
1018
7439-
iron salts, NEC
300
96.9
89-6
U140
78-
isobutyl alcohol
563
182
DW
D,I
83-1
P064
624-
isocyanic acid, methyl ester
3.1
1.00
EHW
I,?
83-9
0014
78-
isophorone
5,200
1,680
59-1
0018
67-
isopropyl alcohol
1,000
323
63-0
0005
98-
isopropyl benzene
100
32.3
82-8
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Chapter 21.40 CRITICAL AREAS
Page 44 of 60
Hazardous
Waste ID
Number
CAS #
Substance Name
Critical
Concentration
Ng /L
Critical
Quantity
kg
DOE
Designation
EPA
Hazai
U141
120-
isosafrole
563
182
DW
D,+
58-1
U142
143-
Kepone
3.1
1.00
EHW
X,H
50-0
U143
303-
Lasiocarpine
3.1
1.00
EHW
C,+
34-4
U144
301-
lead acetate
64
20.67
EHW
D,EP
04-2
U145
7446-
lead phosphate
65
21.0
DW
+
27-7
1019
lead salts, NEC
50
16.15
U146
1335-
lead subacetate
65
21.0
DW
+
32-6
U129
58-
Lindane
4
1.29
EHW
H,+
89-9
U015
115-
L -serine, diazoacetate (ester)
3.1
1.00
EHW
C,+
02-6
1009
7439-
magnesium salts, NEC
400
129
95-4
U148
123-
maleic hydrazide
563
182
DW
D
33-1
U147
108-
maleic anhydride
3.1
1.00
EHW
C
31-6
U149
109-
Malononitrile
3.1
1.00
EHW
C
77-3
1020
7439-
manganese salts, NEC
50
16.15
96-5
U071
541-
m -dichlorobenzene
20
6.46
EHW
B,H
73-1
U150
148-
melphalan
563
182
DW
+
82-3
U151
7439-
mercury
2
0.65
EHW
EP
97-6
P065
628-
mercury fulminate
3.2
1.03
EHW
R,?
86-4
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Chapter 21.40 CRITICAL AREAS
Page 45 of 60
Hazardous
Waste ID
Number
CAS #
Substance Name
Critical
Concentration
lag / L
Critical
Quantity
kg
DOE
Designation
EPA
Hazai
1021
7439-
mercury salts, NEC
2
0.65
97-6
P092
62-
mercury, (acetato-O) phenyl-
3.4
1.10
EHW
B
38-4
U152
126-
methacrylonitrile
3.1
1.00
EHW
6,1
98-7
U046
107-
methane, chloromethoxy
3.1
1.00
EHW
D,H,+
30-2
P016
542-
methane, oxybis(chloro)-
3.1
1.00
EHW
B,H,+
88-1
U092
124-
methanamine, N -methyl-
3.1
1.00
EHW
C,I
40-3
U029
74-
methane, bromo
1,400
452
EHW
H
83-9
U045
74-
methane, chloro
13,800
4,456.50
EHW
H,I
87-3
U068
74-
methane, dibromo-
0.55
0.18
EHW
C,H,+
95-3
U080
75-
methane, dichloro-
150
48.44
EHW
C,H
09-2
U075
75-
methane, dichlorodifluoro-
1,600
516.70
EHW
H
71-8
U138
74-
methane, iodo-
3.1
1.00
EHW
H,+
88-4
U211
56-
methane, tetrachloro-
45
14.53
EHW
C,H,+
23-5
P112
509-
methane, tetranitro
3.1
1.00
EHW
A,R
14-8
U044
67-
methane, trichloro-
1.9
0.61
EHW
C,H,+
66-3
U121
75-
methane, trichlorofluoro-
32,300
10,430.80
EHW
H
69-4
U119
62-
methanesulfonic acid, ethyl ester
563
182
DW
+
50-0
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Chapter 21.40 CRITICAL AREAS
Page 46 of 60
Hazardous
Waste ID
Number
CAS #
Substance Name
Critical
Concentration
pg / L
Critical
Quantity
kg
DOE
Designation
EPA
Hazai
U153
74-
methanethiol
3.1
1.00
EHW
6,1
93-1
P118
75-
methanethiol, trichloro-
3.1
1.00
EHW
H
70-7
U123
64-
methanoic acid
563
182
DW
D,O
18-6
U154
67-
methanol
563
182
DW
D,I
56-1
U155
91-
methapyrilene
563
182
DW
D
80-5
P066
16752-
methomyl
3.1
1.00
EHW
B
77-5
0016
72-
methoxychlor
100
32.3
43-5
U154
67-
methyl alcohol
563
182
DW
D,I
56-1
U029
74-
methyl bromide
1,400
452
EHW
H
83-9
U045
74-
methyl chloride
13,800
4,457
EHW
H,I
87-3
U156
79-
methyl chlorocarbonate
3.1
1.00
EHW
B,H,I
22-1
U226
71-
methyl chloroform
1,100
355
EHW
C,H
55-6
U159
78-
methyl ethyl ketone
1,000
323
DW
D,I
93-3
U160
1338-
methyl ethyl ketone peroxide
3.1
1.00
EHW
C,R
23-4
P068
60-
methyl hydrazine
3.1
1.00
EHW
A,I
34-4
U138
74-
methyl iodine
3.1
1.00
EHW
H,+
88-4
U161
108-
methyl isobutyl ketone
563
182
DW
D,I
10-1
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Chapter 21.40 CRITICAL AREAS
Page 47 of 60
Hazardous
Waste ID
Number
CAS #
Substance Name
Critical
Concentration
pg / L
Critical
Quantity
kg
DOE
Designation
EPA
Hazai
P064
624-
methyl isocyanate
3.1
1.00
EHW
I,?
83-9
U162
80-
methyl methacrylate
563
182
DW
D,I
62-6
P071
298-
methyl parathion
3.1
1.00
EHW
A
00-0
U068
74-
methylene bromide
3.1
1.00
EHW
C,H,+
95-3
U080
75-
methylene chloride
150
48.5
EHW
C,H
09-2
U122
50-
methylene oxide
3.1
1.00
EHW
C
00-0
U164
56-
methylthiouracil
563
182
DW
+
04-2
U010
50-
Mitomycin C
3.1
1.00
EHW
B,+
07-7
0008
108-
m -xylene
1,100
355
38-3
U086
1615-
N,N-diethylhydrazine
563
182
DW
+
80-1
U165
91-
naphthalene
3.1
1.00
EHW
B
20-3
U047
91-
naphthalene, 2 -chloro-
3.1
1.00
EHW
D,H
58-7
U031
71-
n -butyl alcohol
563
182
DW
D,I
36-3
U176
759-
N -ethyl -N -nitroso carbamide
3.1
1.00
EHW
C,+
73-9
P074
557-
nickel (II) cyanide
28
9.04
EHW
D,R,?
19-7
P073
12612-
nickel carbonyl
39
12.6
EHW
B
55-4
P074
557-
nickel cyanide
28
9.04
EHW
D,R,?
19-7
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Chapter 21.40 CRITICAL AREAS
Page 48 of 60
Hazardous
Waste ID
Number
CAS #
Substance Name
Critical
Concentration
pg / L
Critical
Quantity
kg
DOE
Designation
EPA
Hazai
1022
7440-
nickel salts, NEC
13.4
4.33
02-0
P073
13463-
nickel tetracarbonyl
39
12.6
EHW
B
39-3
P075
54-
nicotine and salts
3.1
1.00
EHW
B
11-5
1005
nitrate -nitrogen salts, NEC
400
129.17
P076
10102-
nitric oxide
3.1
1.00
EHW
B
43-9
U169
98-
nitrobenzene
19,800
6,395
EHW
C,I
95-3
P076
10102-
Nitrogen (11) oxide
3.1
1.00
EHW
B
43-9
P078
10102-
Nitrogen (IV) oxide
3.1
1.00
EHW
A
44-0
P078
10102-
nitrogen dioxide
3.1
1.00
EHW
A
44-0
P081
55-
nitroglycerine
3.1
1.00
EHW
R,?
63-0
U177
684-
N -methyl -N -nitroso carbamide
3.1
1.00
EHW
C,+
93-5
U163
70-
N -methyl -N' -nitroso -guanidine
3.1
1.00
EHW
C,+
25-7
U173
1116-
N-nitrosodiethanolamine
563
182
DW
+
54-7
U174
55-
N-nitrosodiethylamine
0.008
0.002
EHW
C,+
18-5
P082
62-
N-nitrosodimethylamine
0.014
0.004
EHW
B,+
75-9
U172
924-
N-nitrosodi-n-butylamine
0.064
0.020
DW
D,+
16-3
0011
924-
N-nitroso-di-N-butylamine
0.064
0.021
16-3
0013
86-
N-nitrosodiphenylamine
49
15.8
30-6
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Chapter 21.40 CRITICAL AREAS
Page 49 of 60
Hazardous
Waste ID
Number
CAS #
Substance Name
Critical
Concentration
pg / L
Critical
Quantity
kg
DOE
Designation
EPA
Hazai
P084
4549-
N-nitrosomethylvinylamine
3.1
1.00
EHW
B,+
40-0
U176
759-
N-nitroso-N-ethylurea
3.1
1.00
EHW
C,+
73-9
U178
615-
N-nitroso-N-methylurathane
3.1
1.00
EHW
B,+
53-2
U177
684-
N-nitroso-N-methylurea
3.1
1.00
EHW
C,+
93-5
U111
621-
N-nitroso-N-propylamine
3.1
1.00
EHW
C,+
64-7
U179
100-
N-nitrosopiperidine
3.1
1.00
EHW
C,+
75-4
0012
930-
N-nitrosopyrrolidine
0.16
0.052
55-2
U180
930-
N-nitrosopyrrolidine
0.16
0.051
DW
D,+
55-2
P093
103-
N -phenylthiourea
3.1
1.00
EHW
A
85-5
U194
107-
n-propylamide
3.1
1.00
EHW
C,I
10-8
P070
116-
0-[(methylamino)carbonyl]oxime
3.1
1.00
EHW
B
06-3
U048
95-
o -chlorophenol
0.1
0.032
EHW
D,H
57-8
P123
8001-
octachlorocamphene
3.1
1.00
EHW
X,H
35-2
P085
152-
octamethylphosphoramide
3.1
1.00
EHW
A
16-9
U070
95-
o -dichlorobenzene
10
3.23
EHW
B,H
50-1
0019
oil and grease
1,000
323
P085
152-
Osmium oxide
3.1
1.00
EHW
B
16-9
P087
20816-
osmium trioxide
3.1
1.00
EHW
B
12-0
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Chapter 21.40 CRITICAL AREAS
Page 50 of 60
Hazardous
Waste ID
Number
CAS #
Substance Name
Critical
Concentration
pg / L
Critical
Quantity
kg
DOE
Designation
EPA
Hazai
U222
636-
o -toluidine hydrochloride
563
182
DW
D,+
21-5
U115
75-
Oxirane
3.1
1.00
EHW
C,I
21-8
U041
106-
Oxirane, 2 -(chloromethyl)-
3.1
1.00
EHW
C,H,+
89-8
U239
1330-
o -xylene
500
162
EHW
C,I
20-7
U072
106-
PARA
0.3
0.10
EHW
B,H
46-7
U182
123-
paraldehyde
563
182
DW
D,I
63-7
P089
56-
Parathion
3.1
1.00
EHW
X
38-2
U197
106-
p-benzoquinone
3.1
1.00
EHW
C
51-4
P024
106-
p-chloroaniline
3.1
1.00
EHW
C,H
47-8
U072
106-
p -dichlorobenzene
0.3
0.10
EHW
B,H
46-7
U183
608-
pentachlorobenzene
3.1
1.00
EHW
H
93-5
U184
76-
pentachloroethane
3.1
1.00
EHW
A,H
01-7
U185
82-
pentachloronitrobenzene
3.1
1.00
EHW
D,H,+
68-8
U242
87-
pentachlorophenol
30
9.69
EHW
A,H
86-5
U187
62-
phenacetin
563
182
DW
D,+
44-2
U188
108-
phenol
300
96.9
EHW
C
95-2
U212
58-
phenol, 2,3,4,6-tetrachloro-
3.1
1.00
EHW
C,H
90-2
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Chapter 21.40 CRITICAL AREAS
Page 51 of 60
Hazardous
Waste ID
Number
CAS #
Substance Name
Critical
Concentration
pg / L
Critical
Quantity
kg
DOE
Designation
EPA
Hazai
U230
95-
phenol, 2,4,5-trichloro-
1
0.323
EHW
A,H
95-4
P009
131-
phenol, 2,4,5-trinitro-, ammonium salt
3.1
1.00
EHW
R,?
74-8
U231
88-
phenol, 2,4,6-trichloro-
2
0.646
EHW
A,H
06-2
U081
120-
phenol, 2,4-dichloro-
0.3
0.096
EHW
D,H
83-2
U101
105-
phenol, 2,4 -dimethyl-
400
129
DW
D
67-9
P048
51-
phenol, 2,4-dinitro-
70
22.6
EHW
B
28-5
P020
88-
phenol, 2,4-dinitro-6-(1-methyl-propyl)-
3.1
1.00
EHW
B
85-7
P047
534-
phenol, 2,4-dinitro-6-methyl-, and salts
3.1
1.00
EHW
B
52-1
P082
62-
phenol, 2,6-dichloro-
3.1
1.00
EHW
D,H
75-9
U048
95-
phenol, 2 -chloro-
0.1
0.032
EHW
D,H
57-8
P034
131-
phenol, 2-cyclohexyl-4,6-dinitro-
3.1
1.00
EHW
C
89-5
U039
59-
phenol, 4 -chloro -3 -methyl-
3.1
1.00
EHW
H
50-7
U017
98-
phenol, 4 -nitro-
3.1
1.00
EHW
C
87-3
U242
87-
phenol, pentachloro-
30
9.69
EHW
A,H
86-5
0022
Phenols, NEC
1.0
0.323
P036
696-
phenyldichloroarsine
3.1
1.00
EHW
B,H
28-6
P092
62-
phenylmercuric acetate
3.4
1.10
EHW
B
38-4
P094
298-
phorate
3.1
1.00
EHW
X
02-2
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Chapter 21.40 CRITICAL AREAS
Page 52 of 60
Hazardous
Waste ID
Number
CAS #
Substance Name
Critical
Concentration
pg / L
Critical
Quantity
kg
DOE
Designation
EPA
Hazai
P095
75-
phosgene
3.1
1.00
EHW
B,H
44-5
P096
7803-
phosphine
3.1
1.00
EHW
B,I
51-2
P043
55-
phosphofluoridic acid bis(1-methyl-
3.1
1.00
EHW
B,H
91-4
ethyl) -ester
P041
311-
phosphoric acid, diethyl p-nitrophenyl
3.1
1.00
EHW
45-5
ester
U145
7446-
phosphoric acid, lead salt
65
21.0
DW
+
27-7
P044
60-
phosphorodithioic acid, 0,0 -dimethyl
3.1
1.00
EHW
A
51-5
S-[2-methylamino)-2-oxoethyl] ester
U087
3288-
phosphorodithioic acid, 0,0 -dimethyl -S-
563
182
EHW
58-2
methyl ester
P094
298-
phosphorothiac acid, 0,0 -diethyl
3.1
1.00
EHW
X
02-2
S-(ethylthio)methyl ester
P089
56-
phosphorothioic acid, 0,0 -diethyl
3.1
1,00
EHW
X
38-2
O-(P-nitophenyl) ester
P040
297-
phosphorothioic acid, 0,0 -diethyl
3.1
1.00
EHW
A
97-2
0-pyravinyl ester
P097
52-
phosphorothioic acid, 0,0 -dimethyl
3.1
1.00
EHW
A
85-7
0-[p-((dimethylamino)-sulfonyl)] ester
U189
1314-
phosphorous sulfide
3.1
1.00
EHW
B,I,R
80-3
U190
85-
phthalic anhydrite
3.1
1.00
EHW
C
44-9
P110
78-
plumbane, tetraethyl-
76
24.5
EHW
A
00-2
P077
100-
p-nitroaniline
3.1
1.00
EHW
D,?
01-6
P170
100-
p-nitrophenol
3.1
1.00
EHW
C
02-7
P098
151-
potassium cyanide
330
107
EHW
A
50-8
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Chapter 21.40 CRITICAL AREAS
Page 53 of 60
Hazardous
Waste ID
Number
CAS #
Substance Name
Critical
Concentration
lag / L
Critical
Quantity
kg
DOE
Designation
EPA
Hazai
P099
506-
potassium silver cyanide
93
30.0
EHW
A
61-6
U192
23950-
pronamide
563
182
DW
58-5
P070
116-
propanal, 2-methy1-2(methylthio)-
3.1
1.00
EHW
B
06-3
U066
96-
propane, 1,2-dibromo-3-chloro
3.1
1.00
EHW
C,H,+
12-8
U027
108-
propane, 2,2'oxybis[2-chloro]-
3.1
1.00
EHW
C,H,C
60-1
U171
79-
propane, 2 -nitro-
3.1
1.00
EHW
C,I
46-9
U149
109-
propanedintrile
3.1
1.00
EHW
B
77-3
P101
107-
propanenitrile
3.1
1.00
EHW
B
12-0
P079
75-
propanenitrile, 2 -hydroxy -2 -methyl-
3.1
1.00
EHW
A
86-5
P027
542-
propanenitrile, 3 -chloro-
3.1
1.00
EHW
B,H
76-7
U008
79-
propanoic acid
3.1
1.00
EHW
C,O,I
10-7
U233
93-
Propanoic acid,
10
3.23
EHW
B,H
72-1
2-(2,4, 5-trich lorop henoxy)-
P017
598-
propanone, 1,bromo-
3.1
1.00
EHW
C,H
31-2
P102
107-
propargyl alcohol
3.1
1.00
EHW
X
19-7
U007
79-
propenamide
3.1
1.00
EHW
C
06-1
U084
542-
propene, 1,3-dichloro-
3.1
1.00
EHW
C,H
75-6
U083
78-
propylene dichloride
3.1
1.00
EHW
C,H,I
87-5
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Chapter 21.40 CRITICAL AREAS
Page 54 of 60
Hazardous
Waste ID
Number
CAS #
Substance Name
Critical
Concentration
pg / L
Critical
Quantity
kg
DOE
Designation
EPA
Hazai
U196
110-
pyridine
3.1
1.00
EHW
C,I
86-1
P075
54-
pyridine, (S)-3-(1-methyl-2-pyrrodidinyl)-
3.1
1.00
EHW
B
11-5
and salts
U155
91-
pyridine, 2-[(2-dimethylamino)-2-
563
182
DW
D
80-5
phenylamino]-
U191
109-
pyridine, 2 -methyl
3.1
1.00
EHW
C
06-8
U179
100-
pyridine, hexahydro-N-nitroso-
3.1
1.00
EHW
C,+
75-4
P111
107-
pyrophosphoric acid, tetraethyl ester
3.1
1.00
EHW
A
49-3
U180
930-
pyrrole, tetrahydro-N-nitroso-6-methyl-
563
182
DW
D,+
55-2
2-thioxo-
U200
50-
reserpine
563
182
DW
?
55-5
U201
108-
Resorcinol
3.1
1.00
EHW
C
46-3
U062
2303-
S-(2,3-dichloroallyl)
3.1
1.00
EHW
C,H,+
16-4
diisopropylthiocarbamate
U202
81-
saccharine and salts
563
182
DW
+
07-2
U203
94-
Safrole
563
182
DW
D,+
59-7
U204
7783-
selenious acid
16
5.17
DW
0
00-8
U204
7783-
selenium dioxide
14
4.52
DW
0
00-8
U205
7488-
selenium disulfide
11
3.55
DW
R
56-4
1023
7782-
selenium salts, NEC
10
3.23
49-2
P103
630-
Selenourea
18
5.81
EHW
B
10-4
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Chapter 21.40 CRITICAL AREAS
Page 55 of 60
Hazardous
Waste ID
Number
CAS #
Substance Name
Critical
Concentration
pg / L
Critical
Quantity
kg
DOE
Designation
EPA
Hazai
P104
506-
silver cyanide
62
20.0
EHW
C
64-9
1024
7440-
silver salts, NEC
50
16.15
22-4
U233
93-
Silvex (2,4,5 -TP)
10
3.23
EHW
B,H
72-1
P105
26628-
sodium azide
3.1
1.00
EHW
A
22-8
P106
143-
sodium cyanide
377
122
EHW
B
33-9
1025
7440-
sodium salts, NEC
500
161
23-5
U206
18883-
streptozotocin
563
182
DW
+
66-4
P107
1314-
strontium sulfide
3.1
1.00
EHW
R,?
96-1
P018
357-
strychnidin-10-one, 2,3-dimethoxy-
3.1
1.00
EHW
A
57-3
P108
57-
strychnidin-10-one, and salts
3.1
1.00
EHW
B
24-9
P108
57-
strychnine and salts
3.1
1.00
EHW
B
24-9
0009
100-
stryene
50
16.1
42-5
1006
sulfate salts, NEC
3,000
968.80
U135
7783-
sulfur hydride
3.1
1.00
EHW
6,1
06-4
U189
1314-
sulfur phosphide
3.1
1.00
EHW
B,I,R
80-3
U205
7488-
sulfur selenide
11
3.55
DW
R
56-4
U103
77-
sulfuric acid, dimethyl ester
3.1
1.00
EHW
C,O,+
78-1
P115
7446-
sulfuric acid, thallium (I) salt
3.1
1.00
EHW
B
18-6
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Chapter 21.40 CRITICAL AREAS
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Hazardous
Waste ID
Number
CAS #
Substance Name
Critical
Concentration
pg / L
Critical
Quantity
kg
DOE
Designation
EPA
Hazat
U234
99-
sym-trinitrobenzene
563
182
DW
D,R
35-4
U210
127-
tetrachloroethylene
35
11.30
EHW
C,H
18-4
P110
78-
tetraethyl lead
76
24.5
EHW
A
00-2
P109
3689-
tetraethyldithiopyrophosphate
3.1
1.00
EHW
A
24-5
P111
107-
tetraethylpyrophosphate
3.1
1.00
EHW
A
49-3
U213
109-
tetrahydrofuran
563
182
DW
1
99-9
P062
757-
tetraphosphoric acid, hexaethyl ester
3.1
1.00
EHW
B
58-4
P112
509-
tetronitromethane
3.1
1.00
EHW
A,R
14-8
P113
1314-
thallic oxide
15
4.84
EHW
B
32-5
U214
563-
thallium (1) acetate
17
5.49
DW
?
68-8
U215
6533-
thallium (1) carbonate
17
5.49
DW
?
73-9
U216
7791-
thallium (I) chloride
16
5.17
DW
?
12-0
P114
12039-
thallium (I) selenide
19
6.14
EHW
C
52-0
P115
7446-
thallium (I) sulfate
17
5.49
EHW
B
18-6
P113
1314-
thallium (III) oxide
15
4.84
EHW
B
32-5
U217
10102-
thallium nitrate
17
5.49
DW
?
45-1
1026
7440-
thallium salts, NEC
13.4
4.33
28-0
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Chapter 21.40 CRITICAL AREAS
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Hazardous
Waste ID
Number
CAS #
Substance Name
Critical
Concentration
pg / L
Critical
Quantity
kg
DOE
Designation
EPA
Hazai
U218
62-
thioactamide
563
182
DW
+
55-5
U219
62-
thiocarbamide
3.1
1.00
EHW
C,+
56-6
P045
39196-
thiofanox
3.1
1.00
EHW
B
18-4
U153
74-
thiomethanol
3.1
1.00
EHW
B,I
93-1
P049
541-
thiomidodicarbonic diamide
3.1
1.00
EHW
A
53-7
P014
108-
thiophenol
3.1
1.00
EHW
A
98-5
P116
79-
thiosemicarbozide
3.1
1.00
EHW
B,H,+
19-6
U219
62-
thiourea
3.1
1.00
EHW
C,+
56-6
P026
5344-
thiourea, (2-chlorophenyl)-
3.1
1.00
EHW
A,H
82-1
P072
86-
thiourea, 1-naphthalenyl-
3.1
1.00
EHW
B
88-4
P093
103-
thiourea, phenyl
3.1
1.00
EHW
A
85-5
U244
137-
thiuran
563
182
DW
D
26-8
U220
108-
toluene
100
32.3
EHW
C,I
88-3
U221
25376-
toluenediamine
563
182
DW
?
45-8
1007
total hardness
17,000
5,489.89
0015
8001-
toxaphene
5.0
1.61
35-2
U228
79-
trichloroethene
45
14.5
EHW
C,H,+
01-6
U228
79-
trichloroethylene
45
14.5
EHW
C,H,+
01-6
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Chapter 21.40 CRITICAL AREAS
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Hazardous
Waste ID
Number
CAS #
Substance Name
Critical
Concentration
lag / L
Critical
Quantity
kg
DOE
Designation
EPA
Hazai
P118
75-
trichloromethanol
3.1
1.00
EHW
H
70-7
U121
75-
trichloromonofluoromethane
32,300
10,432
EHW
H
69-4
U235
126-
tris(2,3-disbromopropyl)phosphate
3.1
1.00
EHW
D,H
72-7
U236
72-
trypan blue
3.1
1.00
EHW
H,+
57-1
U237
66-
Uracil mustard
3.1
1.00
EHW
B,H,+
75-1
U237
66-
Uracil, 5[bis(2-chloromethyl)amino]
3.1
1.00
EHW
B,H,+
75-1
P119
7803-
vanadic acid, ammonium salt
3.1
1.00
EHW
B
55-6
P120
1314-
vanadium (V) oxide
3.1
1.00
EHW
B
62-1
P120
1314-
vanadium pentoxide
3.1
1.00
EHW
B
62-1
U043
75-
vinyl chloride
10.0
3.23
EHW
D,H,+
01-4
P001
81-
Warfarin
3.1
1.00
EHW
A
81-2
U200
50-
Yohimban-16-carboxylic acid, 11,17-
563
182
DW
?
55-5
dimethoxy-18-[(3,4,5-trimethoxy-
benzoyl)oxy]-, methyl ester
P121
557-
zinc cyanide
700
226
EHW
C
21-1
P122
1314-
zinc phosphide
6,580
2,125
EHW
B,R
84-7
1027
7440-
zinc salts, NEC
5,000
1,615
66-6
2. Within the critical aquifer recharge area, the use, handling or storage of critical materials shall
require submittal of the following information to the City and the fire department serving the
property for which a permit is sought:
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Chapter 21.40 CRITICAL AREAS Page 59 of 60
a. Department of Ecology and Environmental Protection Agency identification number,
name and classification;
b. The amount and concentrations of critical material used, handled or stored;
c. The method of storage and spill containment;
d. Material safety data sheet (MSDS) for the critical material(s); and
e. Spill containment management plan.
3. Spill containment facilities shall be designed to:
a. Prevent all infiltration into the ground water or any contamination of property;
b. Prevent commingling of stormwater runoff and critical materials; and
c. Expedite clean-up operations.
4. Industrial pre-treatment shall be required for any waste entering the public wastewater
collection system in accordance with the requirements of Spokane County utilities.
5. On-site disposal of any critical material or hazardous waste product is prohibited.
F. Enforcement procedures for violations of this chapter shall be in conformance with Chapter 17.100
SVMC. (Ord. 07-015 § 4, 2007).
21.40.070 Reasonable use determination.
A. The standards and regulations of this chapter are not intended, and shall not be construed or
applied in a manner, to deny all reasonable economic use of private property. If an applicant
demonstrates to the satisfaction of the City of Spokane Valley that strict application of the standards
of this chapter would deny all reasonable use of their property, development may be permitted
subject to appropriate conditions, derived from this chapter, as determined by the community
development director.
B. An applicant for relief from strict application of these standards shall demonstrate the following:
1. That no reasonable use with less impact on the critical area and buffer or setback is feasible
and reasonable; and
2. That there is no feasible and reasonable on-site alternative to the activities proposed,
considering possible changes in site layout, reductions in density and similar factors; and
3. That the proposed activities, as conditioned, will result in the minimum possible impacts to
critical area and buffer or setback; and
4. That all reasonable mitigation measures have been implemented or assured; and
5. That the inability to derive reasonable economic use is not the result of the applicant's
actions.
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Chapter 21.40 CRITICAL AREAS Page 60 of 60
C. Decision. The director shall include findings on each of the evaluation criteria listed in subsection B
of this section in a written decision. The written decision shall be mailed to the applicant and adjacent
property owners, including property owners across public rights-of-way or private easements. The
written decision shall include conditions necessary to serve the purposes of this chapter.
D. Process. A reasonable use determination is classified as a Type I permit and shall be processed
pursuant to SVMC 17.80.070. (Ord. 10-010 § 3, 2010).
Reference: Wetland Mitigation in Washington State, Part 1: Agency Policies and Guidance (Version 1,
Publication No. 06-06-011a, March 2006) and Wetland Mitigation in Washington State, Part 2: Developing
Mitigation Plans (Version 1, Publication No. 06-06-011 b, March 2006)
The Spokane Valley Municipal Code is current through
Ordinance No. 15-005, passed February 24, 2015.
Disclaimer: The City Clerk's Office has the official version of the
Spokane Valley Municipal Code. Users should contact the City
Clerk's Office for ordinances passed subsequent to the ordinance
cited above.
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