HomeMy WebLinkAbout1.00 General Application Materials_Part12Sand Pad
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UELS, LLCCorporate Office * 85 South 200 EastVernal, UT 84078 * (435) 789-1017
ENGINEERING & LAND SURVEYING
SURVEYED BY
DRAWN BY
SCALE
1" = 60'
NOTES:
·Contours shown at 2' intervals.
DAYTON SLAUGH 06-29-23
T.L.L.010-25-23
SKR #698-10-BV PADTRACT 72, SECTIONS 10 & 15, T6S, R98W, 6th P.M.GARFIELD COUNTY, COLORADO
CHEVRON U.S.A. INC.
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PRELIMINARY HYDRAULIC STIMULATION LAYOUT
REV: 1 11-16-23 T.L.L. (REMOVE FLARE STACK & UPDATE LOD & EXISTING DISTURBANCE)
412
UELS, LLCCorporate Office * 85 South 200 EastVernal, UT 84078 * (435) 789-1017
ENGINEERING & LAND SURVEYING
SURVEYED BY
DRAWN BY
SCALE
1" = 60'
DAYTON SLAUGH 06-29-23
T.L.L.07-10-23
SKR #698-10-BV PADTRACT 72, SECTIONS 10 & 15, T6S, R98W, 6th P.M.GARFIELD COUNTY, COLORADO
CHEVRON U.S.A. INC.
60
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FACILITY LAYOUT
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HALL
32000
COL O R A D O REGIS
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SIONAL E N GI N EER
11-17-23
REV: 2 11-16-23 T.L.L. (MOVE TANK & UPDATE LOD & EXISTING DISTURBANCE)
413
UELS, LLCCorporate Office * 85 South 200 EastVernal, UT 84078 * (435) 789-1017
ENGINEERING & LAND SURVEYING
NOTES:
·Contours shown
at 2' intervals.
APPROXIMATE UN-RECLAIMED ACREAGE = ±2.349 ACRES
APPROXIMATE RECLAIMED ACREAGE = ±4.510 ACRES
TOTAL ACREAGE = ±6.859 ACRES
INTERIM RECLAMATION LAYOUT
SURVEYED BY
DRAWN BY
SCALE
1" = 60'
DAYTON SLAUGH 06-29-23
SKR #698-10-BV PADTRACT 72, SECTIONS 10 & 15, T6S, R98W, 6th P.M.GARFIELD COUNTY, COLORADO
CHEVRON U.S.A. INC.
60
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30
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0'60
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T.L.L.07.10-23
H
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N E L S ON
M
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HALL
32000
COL O R A D O REGIS
T
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SIONAL E N G I N EER
11-17-23
Proposed Gas Flowline Disturbance (Within LOD) (To Be Reclaimed)±30'N/A
±207'80Proposed Gas Flowline Disturbance (Outside LOD) (To Be Reclaimed)
Proposed Fluids Pipeline Disturbance (Within LOD) (To Be Reclaimed)±30'N/A
±4,981'80Proposed Fluids Pipeline Disturbance (Outside LOD) (To Be Reclaimed)
Length (ft)Width (ft)
REV: 4 11-16-23 T.L.L. (UPDATE EQUIPMENT, LOD & EXISTING DISTURBANCE)
414
INTERIM RECLAMATION - CROSS SECTIONS
SURVEYED BY
DRAWN BY
SCALE
AS SHOWNUELS, LLCCorporate Office * 85 South 200 EastVernal, UT 84078 * (435) 789-1017
ENGINEERING & LAND SURVEYING
DAYTON SLAUGH 06-29-23
SKR #698-10-BV PADTRACT 72, SECTIONS 10 & 15, T6S, R98W, 6th P.M.GARFIELD COUNTY, COLORADO
CHEVRON U.S.A. INC.
T.L.L.07-10-23
REV: 2 11-16-23 T.L.L. (UPDATE LOD)
H
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N E L S ON
M
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HALL
32000
COL O R A D O REGIS
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N EER
11-17-23
415
9
Custom Soil Resource Report Soil Map
SKR 698-10-BV Pad
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729960 730000 730040 730080 730120 730160 730200 730240 730280
729960 730000 730040 730080 730120 730160 730200 730240 730280 730320
39° 32' 29'' N
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39° 32' 21'' N
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39° 32' 21'' N
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Map projection: Web Mercator Corner coordinates: WGS84 Edge tics: UTM Zone 12N WGS84
0 50 100 200 300Feet
0 25 50 100 150Meters
Map Scale: 1:1,700 if printed on A landscape (11" x 8.5") sheet.
Soil Map may not be valid at this scale.
416
Map Unit Legend
Map Unit Symbol Map Unit Name Acres in AOI Percent of AOI
44 Happle very channery sandy
loam, 3 to 12 percent slopes
5.5 86.6%
46 Happle-Rock outcrop
association, 25 to 65 percent
slopes
0.9 13.4%
Totals for Area of Interest 6.4 100.0%
Map Unit Descriptions
The map units delineated on the detailed soil maps in a soil survey represent the
soils or miscellaneous areas in the survey area. The map unit descriptions, along
with the maps, can be used to determine the composition and properties of a unit.
A map unit delineation on a soil map represents an area dominated by one or more
major kinds of soil or miscellaneous areas. A map unit is identified and named
according to the taxonomic classification of the dominant soils. Within a taxonomic
class there are precisely defined limits for the properties of the soils. On the
landscape, however, the soils are natural phenomena, and they have the
characteristic variability of all natural phenomena. Thus, the range of some
observed properties may extend beyond the limits defined for a taxonomic class.
Areas of soils of a single taxonomic class rarely, if ever, can be mapped without
including areas of other taxonomic classes. Consequently, every map unit is made
up of the soils or miscellaneous areas for which it is named and some minor
components that belong to taxonomic classes other than those of the major soils.
Most minor soils have properties similar to those of the dominant soil or soils in the
map unit, and thus they do not affect use and management. These are called
noncontrasting, or similar, components. They may or may not be mentioned in a
particular map unit description. Other minor components, however, have properties
and behavioral characteristics divergent enough to affect use or to require different
management. These are called contrasting, or dissimilar, components. They
generally are in small areas and could not be mapped separately because of the
scale used. Some small areas of strongly contrasting soils or miscellaneous areas
are identified by a special symbol on the maps. If included in the database for a
given area, the contrasting minor components are identified in the map unit
descriptions along with some characteristics of each. A few areas of minor
components may not have been observed, and consequently they are not
mentioned in the descriptions, especially where the pattern was so complex that it
was impractical to make enough observations to identify all the soils and
miscellaneous areas on the landscape.
The presence of minor components in a map unit in no way diminishes the
usefulness or accuracy of the data. The objective of mapping is not to delineate
pure taxonomic classes but rather to separate the landscape into landforms or
landform segments that have similar use and management requirements. The
delineation of such segments on the map provides sufficient information for the
Custom Soil Resource Report
12417
9
Custom Soil Resource Report Soil Map
SKR 698-10-BV Pad, Access Road, and Flowline/Pipeline
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729300 729400 729500 729600 729700 729800 729900 730000 730100 730200 730300
729300 729400 729500 729600 729700 729800 729900 730000 730100 730200 730300 730400
39° 33' 6'' N
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39° 33' 6'' N
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39° 32' 16'' N
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39° 32' 16'' N
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Map projection: Web Mercator Corner coordinates: WGS84 Edge tics: UTM Zone 12N WGS84
0 350 700 1400 2100Feet
0 100 200 400 600Meters
Map Scale: 1:7,510 if printed on A portrait (8.5" x 11") sheet.
Soil Map may not be valid at this scale.
418
MAP LEGEND MAP INFORMATION
Area of Interest (AOI)
Area of Interest (AOI)
Soils
Soil Map Unit Polygons
Soil Map Unit Lines
Soil Map Unit Points
Special Point Features
Blowout
Borrow Pit
Clay Spot
Closed Depression
Gravel Pit
Gravelly Spot
Landfill
Lava Flow
Marsh or swamp
Mine or Quarry
Miscellaneous Water
Perennial Water
Rock Outcrop
Saline Spot
Sandy Spot
Severely Eroded Spot
Sinkhole
Slide or Slip
Sodic Spot
Spoil Area
Stony Spot
Very Stony Spot
Wet Spot
Other
Special Line Features
Water Features
Streams and Canals
Transportation
Rails
Interstate Highways
US Routes
Major Roads
Local Roads
Background
Aerial Photography
The soil surveys that comprise your AOI were mapped at
1:24,000.
Warning: Soil Map may not be valid at this scale.
Enlargement of maps beyond the scale of mapping can cause
misunderstanding of the detail of mapping and accuracy of soil
line placement. The maps do not show the small areas of
contrasting soils that could have been shown at a more detailed
scale.
Please rely on the bar scale on each map sheet for map
measurements.
Source of Map: Natural Resources Conservation Service
Web Soil Survey URL:
Coordinate System: Web Mercator (EPSG:3857)
Maps from the Web Soil Survey are based on the Web Mercator
projection, which preserves direction and shape but distorts
distance and area. A projection that preserves area, such as the
Albers equal-area conic projection, should be used if more
accurate calculations of distance or area are required.
This product is generated from the USDA-NRCS certified data as
of the version date(s) listed below.
Soil Survey Area: Douglas-Plateau Area, Colorado, Parts of
Garfield and Mesa Counties
Survey Area Data: Version 16, Aug 22, 2023
Soil map units are labeled (as space allows) for map scales
1:50,000 or larger.
Date(s) aerial images were photographed: Jun 24, 2020—Jul 8,
2020
The orthophoto or other base map on which the soil lines were
compiled and digitized probably differs from the background
Custom Soil Resource Report
10419
MAP LEGEND MAP INFORMATION
imagery displayed on these maps. As a result, some minor
shifting of map unit boundaries may be evident.
Custom Soil Resource Report
11420
Map Unit Legend
Map Unit Symbol Map Unit Name Acres in AOI Percent of AOI
28 Cumulic Haploborolls, 1 to 3
percent slopes
0.4 1.2%
44 Happle very channery sandy
loam, 3 to 12 percent slopes
15.9 45.0%
45 Happle very channery sandy
loam, 12 to 25 percent slopes
2.6 7.4%
46 Happle-Rock outcrop
association, 25 to 65 percent
slopes
16.4 46.5%
Totals for Area of Interest 35.3 100.0%
Map Unit Descriptions
The map units delineated on the detailed soil maps in a soil survey represent the
soils or miscellaneous areas in the survey area. The map unit descriptions, along
with the maps, can be used to determine the composition and properties of a unit.
A map unit delineation on a soil map represents an area dominated by one or more
major kinds of soil or miscellaneous areas. A map unit is identified and named
according to the taxonomic classification of the dominant soils. Within a taxonomic
class there are precisely defined limits for the properties of the soils. On the
landscape, however, the soils are natural phenomena, and they have the
characteristic variability of all natural phenomena. Thus, the range of some
observed properties may extend beyond the limits defined for a taxonomic class.
Areas of soils of a single taxonomic class rarely, if ever, can be mapped without
including areas of other taxonomic classes. Consequently, every map unit is made
up of the soils or miscellaneous areas for which it is named and some minor
components that belong to taxonomic classes other than those of the major soils.
Most minor soils have properties similar to those of the dominant soil or soils in the
map unit, and thus they do not affect use and management. These are called
noncontrasting, or similar, components. They may or may not be mentioned in a
particular map unit description. Other minor components, however, have properties
and behavioral characteristics divergent enough to affect use or to require different
management. These are called contrasting, or dissimilar, components. They
generally are in small areas and could not be mapped separately because of the
scale used. Some small areas of strongly contrasting soils or miscellaneous areas
are identified by a special symbol on the maps. If included in the database for a
given area, the contrasting minor components are identified in the map unit
descriptions along with some characteristics of each. A few areas of minor
components may not have been observed, and consequently they are not
mentioned in the descriptions, especially where the pattern was so complex that it
was impractical to make enough observations to identify all the soils and
miscellaneous areas on the landscape.
Custom Soil Resource Report
12421
The presence of minor components in a map unit in no way diminishes the
usefulness or accuracy of the data. The objective of mapping is not to delineate
pure taxonomic classes but rather to separate the landscape into landforms or
landform segments that have similar use and management requirements. The
delineation of such segments on the map provides sufficient information for the
development of resource plans. If intensive use of small areas is planned, however,
onsite investigation is needed to define and locate the soils and miscellaneous
areas.
An identifying symbol precedes the map unit name in the map unit descriptions.
Each description includes general facts about the unit and gives important soil
properties and qualities.
Soils that have profiles that are almost alike make up a soil series. Except for
differences in texture of the surface layer, all the soils of a series have major
horizons that are similar in composition, thickness, and arrangement.
Soils of one series can differ in texture of the surface layer, slope, stoniness,
salinity, degree of erosion, and other characteristics that affect their use. On the
basis of such differences, a soil series is divided into soil phases. Most of the areas
shown on the detailed soil maps are phases of soil series. The name of a soil phase
commonly indicates a feature that affects use or management. For example, Alpha
silt loam, 0 to 2 percent slopes, is a phase of the Alpha series.
Some map units are made up of two or more major soils or miscellaneous areas.
These map units are complexes, associations, or undifferentiated groups.
A complex consists of two or more soils or miscellaneous areas in such an intricate
pattern or in such small areas that they cannot be shown separately on the maps.
The pattern and proportion of the soils or miscellaneous areas are somewhat similar
in all areas. Alpha-Beta complex, 0 to 6 percent slopes, is an example.
An association is made up of two or more geographically associated soils or
miscellaneous areas that are shown as one unit on the maps. Because of present
or anticipated uses of the map units in the survey area, it was not considered
practical or necessary to map the soils or miscellaneous areas separately. The
pattern and relative proportion of the soils or miscellaneous areas are somewhat
similar. Alpha-Beta association, 0 to 2 percent slopes, is an example.
An undifferentiated group is made up of two or more soils or miscellaneous areas
that could be mapped individually but are mapped as one unit because similar
interpretations can be made for use and management. The pattern and proportion
of the soils or miscellaneous areas in a mapped area are not uniform. An area can
be made up of only one of the major soils or miscellaneous areas, or it can be made
up of all of them. Alpha and Beta soils, 0 to 2 percent slopes, is an example.
Some surveys include miscellaneous areas. Such areas have little or no soil
material and support little or no vegetation. Rock outcrop is an example.
Custom Soil Resource Report
13422
Douglas-Plateau Area, Colorado, Parts of Garfield and Mesa Counties
28—Cumulic Haploborolls, 1 to 3 percent slopes
Map Unit Setting
National map unit symbol: jnv6
Elevation: 5,800 to 7,400 feet
Mean annual precipitation: 12 to 18 inches
Mean annual air temperature: 40 to 46 degrees F
Frost-free period: 80 to 110 days
Farmland classification: Prime farmland if irrigated and either protected from flooding
or not frequently flooded during the growing season
Map Unit Composition
Cumulic haploborolls and similar soils:90 percent
Minor components:10 percent
Estimates are based on observations, descriptions, and transects of the mapunit.
Description of Cumulic Haploborolls
Setting
Landform:Flood plains
Down-slope shape:Linear
Across-slope shape:Linear
Parent material:Wasatch shale formation alluvium and/or green river shale
formation alluvium
Typical profile
H1 - 0 to 8 inches: gravelly sandy clay loam
H2 - 8 to 20 inches: very channery sandy clay loam
H3 - 20 to 28 inches: clay loam
H4 - 28 to 60 inches: stratified very gravelly sand to extremely gravelly loamy
sand
Properties and qualities
Slope:1 to 3 percent
Depth to restrictive feature:More than 80 inches
Drainage class:Well drained
Runoff class: Low
Capacity of the most limiting layer to transmit water (Ksat):Moderately high to high
(0.20 to 1.98 in/hr)
Depth to water table:About 36 to 72 inches
Frequency of flooding:Occasional
Frequency of ponding:None
Calcium carbonate, maximum content:10 percent
Maximum salinity:Nonsaline to slightly saline (0.0 to 4.0 mmhos/cm)
Available water supply, 0 to 60 inches: Low (about 4.6 inches)
Interpretive groups
Land capability classification (irrigated): None specified
Land capability classification (nonirrigated): 4e
Hydrologic Soil Group: B
Ecological site: R048AY285CO - Foothill Swale
Hydric soil rating: No
Custom Soil Resource Report
14423
Minor Components
Other soils
Percent of map unit:10 percent
Landform:Flood plains
Down-slope shape:Linear
Across-slope shape:Linear
Hydric soil rating: No
44—Happle very channery sandy loam, 3 to 12 percent slopes
Map Unit Setting
National map unit symbol: jnvs
Elevation: 5,200 to 6,000 feet
Mean annual precipitation: 12 to 15 inches
Mean annual air temperature: 46 to 52 degrees F
Frost-free period: 100 to 150 days
Farmland classification: Not prime farmland
Map Unit Composition
Happle and similar soils:80 percent
Minor components:20 percent
Estimates are based on observations, descriptions, and transects of the mapunit.
Description of Happle
Setting
Landform:Alluvial fans
Down-slope shape:Convex
Across-slope shape:Linear
Parent material:Green river formation alluvium derived from shale
Typical profile
H1 - 0 to 7 inches: very channery sandy loam
H2 - 7 to 14 inches: very channery sandy loam
H3 - 14 to 32 inches: very channery sandy clay loam
H4 - 32 to 60 inches: extremely channery sandy loam
Properties and qualities
Slope:3 to 12 percent
Depth to restrictive feature:More than 80 inches
Drainage class:Well drained
Runoff class: Medium
Capacity of the most limiting layer to transmit water (Ksat):Moderately high to high
(0.57 to 2.00 in/hr)
Depth to water table:More than 80 inches
Frequency of flooding:None
Frequency of ponding:None
Calcium carbonate, maximum content:10 percent
Maximum salinity:Nonsaline to very slightly saline (0.0 to 2.0 mmhos/cm)
Custom Soil Resource Report
15424
Available water supply, 0 to 60 inches: Low (about 3.4 inches)
Interpretive groups
Land capability classification (irrigated): None specified
Land capability classification (nonirrigated): 4e
Hydrologic Soil Group: B
Ecological site: R034BY306UT - Upland Loam (Wyoming Big Sagebrush)
Hydric soil rating: No
Minor Components
Cumulic haploborolls
Percent of map unit:10 percent
Hydric soil rating: No
Debeque
Percent of map unit:10 percent
Hydric soil rating: No
45—Happle very channery sandy loam, 12 to 25 percent slopes
Map Unit Setting
National map unit symbol: jnvt
Elevation: 5,400 to 6,200 feet
Mean annual precipitation: 12 to 15 inches
Mean annual air temperature: 46 to 52 degrees F
Frost-free period: 100 to 150 days
Farmland classification: Not prime farmland
Map Unit Composition
Happle and similar soils:80 percent
Minor components:20 percent
Estimates are based on observations, descriptions, and transects of the mapunit.
Description of Happle
Setting
Landform:Mountains, alluvial fans
Landform position (two-dimensional):Toeslope
Landform position (three-dimensional):Mountainflank
Down-slope shape:Convex
Across-slope shape:Linear
Parent material:Green river formation alluvium derived from shale and/or green
river formation colluvium derived from shale
Typical profile
H1 - 0 to 7 inches: very channery sandy loam
H2 - 7 to 14 inches: very channery sandy loam
H3 - 14 to 32 inches: very channery sandy clay loam
H4 - 32 to 60 inches: extremely channery sandy loam
Custom Soil Resource Report
16425
Properties and qualities
Slope:12 to 25 percent
Depth to restrictive feature:More than 80 inches
Drainage class:Well drained
Runoff class: Medium
Capacity of the most limiting layer to transmit water (Ksat):Moderately high to high
(0.57 to 2.00 in/hr)
Depth to water table:More than 80 inches
Frequency of flooding:None
Frequency of ponding:None
Calcium carbonate, maximum content:10 percent
Maximum salinity:Nonsaline to very slightly saline (0.0 to 2.0 mmhos/cm)
Available water supply, 0 to 60 inches: Low (about 3.4 inches)
Interpretive groups
Land capability classification (irrigated): None specified
Land capability classification (nonirrigated): 6e
Hydrologic Soil Group: B
Ecological site: R048AY303CO - Loamy Slopes
Hydric soil rating: No
Minor Components
Toska
Percent of map unit:10 percent
Hydric soil rating: No
Debeque
Percent of map unit:10 percent
Hydric soil rating: No
46—Happle-Rock outcrop association, 25 to 65 percent slopes
Map Unit Setting
National map unit symbol: jnvv
Elevation: 6,200 to 7,200 feet
Mean annual precipitation: 12 to 15 inches
Mean annual air temperature: 46 to 52 degrees F
Frost-free period: 100 to 150 days
Farmland classification: Not prime farmland
Map Unit Composition
Happle and similar soils:50 percent
Rock outcrop:35 percent
Minor components:15 percent
Estimates are based on observations, descriptions, and transects of the mapunit.
Custom Soil Resource Report
17426
Description of Happle
Setting
Landform:Canyons, mountains
Landform position (three-dimensional):Mountainflank
Down-slope shape:Convex
Across-slope shape:Linear
Parent material:Green river formation colluvium derived from shale
Typical profile
H1 - 0 to 7 inches: very channery sandy loam
H2 - 7 to 14 inches: very channery sandy loam
H3 - 14 to 32 inches: very channery sandy clay loam
H4 - 32 to 60 inches: extremely channery sandy loam
Properties and qualities
Slope:25 to 65 percent
Depth to restrictive feature:More than 80 inches
Drainage class:Well drained
Runoff class: High
Capacity of the most limiting layer to transmit water (Ksat):Moderately high to high
(0.57 to 2.00 in/hr)
Depth to water table:More than 80 inches
Frequency of flooding:None
Frequency of ponding:None
Calcium carbonate, maximum content:10 percent
Maximum salinity:Nonsaline to very slightly saline (0.0 to 2.0 mmhos/cm)
Available water supply, 0 to 60 inches: Low (about 3.4 inches)
Interpretive groups
Land capability classification (irrigated): None specified
Land capability classification (nonirrigated): 7e
Hydrologic Soil Group: B
Ecological site: R034BY334UT - Upland Stony Loam (Wyoming big sagebrush)
Hydric soil rating: No
Description of Rock Outcrop
Typical profile
H1 - 0 to 60 inches: unweathered bedrock
Properties and qualities
Slope:40 to 65 percent
Depth to restrictive feature:0 inches to lithic bedrock
Runoff class: Very high
Capacity of the most limiting layer to transmit water (Ksat):Very low to low (0.00 to
0.00 in/hr)
Available water supply, 0 to 60 inches: Very low (about 0.0 inches)
Interpretive groups
Land capability classification (irrigated): None specified
Land capability classification (nonirrigated): 8s
Hydric soil rating: No
Custom Soil Resource Report
18427
Minor Components
Other soils
Percent of map unit:15 percent
Hydric soil rating: No
Custom Soil Resource Report
19428
4 . FINAL STABILIZATION AND LONG-TERM STORMWATER MANAGEMENT
A site is co ns idered finally stabilized when all ground surface d isturbing acti vities at the site have
been completed and all disturbed areas have been either built on , compacted, covered, paved,
or otherwise stabilized in such a way as to minimize erosion to the extent practicable, or a uniform
vegetative cover has been established that reflects a total percent plant cover of at least seventy
percent (70%) of pre-disturbance levels or reference areas.
Typical seed mix and application rates for Skinner Ridge and Sout h Canyon are present ed below
in Tabl e 3 .
Table 3 -Approved S eed Mixtures
*Ele vations up to 7,000ft*
Nat ive M ixture/Variety:
Speci es
Stream bank Wheatgrass
Ga lleta Grass (floret)
Alkali Sacation
Vari et y
Viva
Sandy Dropseed
(If sandy)
Indian Ricegrass Paloma
Native a nd Introduced Mixture/Variety:
Sp ecies Variety
Crested Wheatgrass Ephriam
Galleta Grass (floret) Viva
Alkali Sacation Sandy Dropseed
(If sandy)
Indian Ricegrass Paloma
Russian Wil drye Bozoisky
*Elevations 7,000ft to 9,000ft *
Native M ixture/Variet y:
Spe ci es V ariet y
Chevron U.S.A. Inc.
Skinner Ridge and South Canyon SWMP
%in mix
25
25
25
25
%i n mix
25
10
15
25
25
%in mix
15
Ra t e (PLS•lb/acre)
Drilled Broadcast
2.8 5.6
2.8 5.6
0.4 0.8
3.0 6.0
Rate (PLS•l b/acre)
Drille d Broad cast
1.5 3.0
1.1 2.2
0.2 0.4
3.0 6.0
2.5 5.0
Rat e (PLS•lb/acre)
Dr illed Broadcast
Entrada Consulting Group
429
Thickspike Wheatgrass
Western WheatGrass
Green Needlegrass
Prairie Junegrass
Rocky Mtn. Penstemon
Fourwing Sa ltbrush
Critana
Arriba
Bandera
Native and Introduced Mixture/Variety:
Species
Pubescent Wheatgrass
Western Whatgrass
Russian Wildrye
Alfalfa
Small Burnet
Fourwing Saltbrush
•PLS = Pure Live Seed
Variety
Luna
Arriba
Bozoisky
Ladak
Delar
25 2.5 5.0
25 4.0 8.0
25 2.5 5.0
15 0.2 0.4
10 0.6 1.2
add on 1.0 2.0
%in mix Rate (PLS•lb/acre)
Drilled Broadcast
25 3.5 7.0
25 4.0 8.0
25 2.5 5.0
15 1.2 2 .4
10 3.0 0.0
add on 1.0 2.0
Specific control measures for soil preparation and amendment, soil stabilization , and sediment
control during final stabilization will be chosen on a site by site basis, based on soil condition and
slope . The control measures chosen will be shown on the site specific maps. The general
practices for achieving revegetation are described in EC-2 Temporary and Permanent Seeding in
Appendix D.
Sites are considered finally stabilized once site preparation and interim reclamation (COGCC Rule
1003) are complete and the above stabilization criteria have been met, even though the site will
be disturbed again in the future for final reclamation .
Chevron U .S.A. Inc. 16 Entrada Consulting Group
Skinner Ridge and South Canyon SWMP 430
431
Stormwater Management Plan
Date: 11/10/2023
Location: OGDP SKR 698-10-BV / SKR 698-10-BV Pad
Legal Description: Tract 72, SWSW of Section 10 & NWNW of Section 15, Township 6 South, Range 98
West, 6th P.M., Weld County, Colorado
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Location Information
This document provides site-specific information for the SKR 698-10-BV (Skinner Ridge) Pad (referred to
as the “Pad”) located within OGDP SKR 698-10-BV. A pre-application meeting with Garfield County,
CDPHE, ECMC, CPW, and Chevron was held on October 12, 2023. This application will be an
amendment to the existing SKR-66S98W/10 SWSW Pad, permitted with ECMC under location ID
#336056. This Pad was initially permitted for the drilling and completion of 22 wells; however, those wells
were never drilled. Instead, the location was utilized as the Skinner Ridge Storage Facility, permitted by
both ECMC, under location ID #447846, and Garfield County, under permit LIPA 6428.
The information in this document relates specifically to the time during the construction, drilling,
completion, and production of the two (2) proposed horizontal wells on the well pad portion of the
location and the construction and operation of the facility portion of the location, which will receive
production from the two wells. Additionally, a pilot hole for geothermal testing will be drilled in one of the
wells, but the pilot hole will be plugged prior to drilling the horizontal leg of the well.
The existing location is located off Garfield County Road 211 (Clear Creek Road) approximately 16.7
miles northwest of De Beque, Colorado. The Pad lies on Tract 72, and is situated on two sections, the
SWSW of Section 10 and the NWNW of Section 15, Township 6 South, Range 98 West, 6th P.M. zoned
Resource Lands per Garfield County.
The existing Skinner Ridge Storage Facility disturbance area is 6.2 acres, and an additional 0.7 acres of
disturbance is proposed for construction of stormwater detention ponds and drainage channels at the
SKR 698-10-BV Pad. The working pad surface (WPS) will be 3.8 acres. The Pad disturbance area will be
reduced to 2.3 acres during interim reclamation. The Pad is located on Garfield County Parcel
213732100008 owned by Chevron U.S.A., Inc. The location is currently used as a storage yard and all
storage equipment and facilities will be relocated prior to drilling the proposed wells.
The wells on the SKR 698-10-BV Pad will produce to the proposed production facility portion of the
location and be tied into Chevron’s existing Central Production Facility (CPF) via a proposed gas and
liquids line. Proposed equipment on the Pad will include separators, pigging stations, a gas meter, pipe
skid, an instrument air skid, a skid drain vault, a chemical injection skid, a communication tower, solar
skids, a maintenance tank, heat trace equipment, a transformer or electric generators, switchracks, and a
battery box. A temporary MLVT, located on the nearby Skinner Ridge-66S98W/22NENW Pad (Location
ID# 324358), will be utilized for completion operations.
Phase Duration (days) Estimated Start Date
Construction
(Daylight Only)
10 days 2nd Quarter 2024
Drilling 80 days 3rd Quarter 2024
Completion 23 days 3rd Quarter 2025
Flowback N/A Flowing back directly to permanent facility
Production 30 years 3rd Quarter 2025
Interim Reclamation
(Daylight Only)
60 days 2nd Quarter 2026
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Potentially Impacted Parties
The Working Pad Surface (WPS) of the SKR 698-10-BV Pad is within 2,000 feet of zero (0) Residential
Building Units (RBUs), zero (0) High Occupancy Building Units (HOBUs), and zero (0) Designated
Outside Activity Areas (DOAAs). The Pad is located within a Disproportionately Impacted Community
(DIC).
The location is within ECMC designated High Priority Habitat (HPH) per rule 1202.d for Elk Winter
Concentration Area and Elk Severe Winter Range and rule 1202.c for Aquatic Sportfish Management
Waters.
1. Plan Administration
1.1. Introduction.
This SWMP covers construction activities within a permitted area of the Piceance Basin,
referred to as the Skinner Ridge Drilling and Production Program Area, during the SKR
698-10-BV Pad construction.
The Energy and Carbon Management Commission (ECMC) requires operators to develop
and implement a Stormwater Management Plan (SWMP) detailing practices to manage and
inhibit contaminated stormwater generation and runoff. Chevron has prepared this
document to satisfy the requirements of ECMC Rule 304.c.(15) to develop a site-specific
stormwater management plan (SWMP), consistent with the requirements of ECMC Rule
1002.f., to accompany the Form 2A in order to demonstrate the Commission’s Rules for the
operation of the proposed oil and gas location in a manner that is protective of and
minimizes adverse impacts to public health, safety, welfare, the environment, and wildlife
resources.
Control measures (CMs), formerly known as best management practices (BMPs), will be
employed in accordance with good engineering, hydrologic, and pollution control practices
in order to prevent pollution in stormwater discharges associated with the construction of the
subject facility. All information and conditions represented herein are estimated and
intended as a preliminary plan. Actual placement of CMs, etc. may deviate from the
preliminary plan based on actual conditions discovered in the field and updates will be
made accordingly.
1.2. Plan Availability
The CDPHE SWMP Permit (Permit) requires this plan be provided upon request to any
agency (CDPHE, ECMC, local authority, etc.) with the authority to oversee erosion control,
stormwater practices, or related construction activities. A signed certification statement
must accompany agency submittals. Additionally, SWMPs must be available to the public in
accordance with CDPS regulations. In the event of public requests, Chevron retains the right
to claim any portion of the SWMP confidential.
1.3. Qualified Stormwater Manager
This SWMP will be implemented and executed by Qualified Stormwater Managers (QSMs).
The Permit defines a QSM as:
“An individual knowledgeable in the principles and practices of erosion and sediment control
434
and pollution prevention, and with the skills to assess conditions at construction sites that
could impact stormwater quality and to assess the effectiveness of stormwater controls
implemented to meet the requirements of this Permit.”
Chevron will utilize QSMs as appropriate to conduct stormwater inspections, reporting, and
maintenance. Overall SWMP implementation, however, is the responsibility of the
Administrative QSM. The Administrative QSM is responsible to ensure the SWMP is fully
implemented, and coordinates/delegates SMWP related activities. The following individual
has been designated Administrative QSM:
• Name: Erica Zuniga, PG
• Title: Environmental Specialist
• Phone: 970-304-5425
QSMs will work under the direction of the Administrative QSM and may include both
Chevron employees and consultants/contractors. Routine tasks undertaken by QSMs will
include:
• Conducting inspections;
• Coordinating the construction of control measures (CMs);
• Coordinating CM repairs, corrective actions, and/or maintenance;
• Agency reporting and coordination; and
• Recordkeeping.
1.4. Spill Prevention and Response Plans
Prompt and effective spill response practices will be used at Chevron locations. Some
locations qualify for Spill Prevention Control and Countermeasure (SPCC) Plans under 40
CFR Part 112, and applicable SPCC plan requirements and obligations are incorporated by
reference. Spill response guidance, including agency and chain of command reporting, is
included as Appendix A.
1.5. Plan Review and Revision
This SWMP is intended to be a “living” document, updated as site conditions evolve and/or
CMs are found inadequate. SWMP changes/revisions must be documented, including the
date and a modification description. The types of changes that should be captured, include:
• A change in design, construction, operation, or maintenance of the site requiring
implementation of new or revised CMs;
• The SWMP proves ineffective in controlling pollutants in stormwater runoff in
compliance with the permit conditions;
• Control measures identified in the SWMP are no longer necessary and are removed; and
435
• Corrective actions are taken onsite that result in a change to the SWMP.
Changes to practices described in this SWMP will be recorded on the Plan Modification
Record page at the front of this document. Due to the large number of locations monitored
at any given time, site conditions at individual disturbance locations are documented using
an electronic database (SWMPcompliance.com). The database is used to document site-
specific CMs, ineffective CMs or corrective actions, and inspections are recorded in the
database. The database is updated routinely in coordination with the SWMP inspection
program (Section 5).
1.6. Plan Retention
The master SWMP document will be stored electronically in the Chevron network. Individual
copies of the SWMP will be distributed to QSMs, as well as other groups (e.g., Production,
Operations, etc.) as warranted. Records associated with SWMP activities – including
inspections, maps, maintenance records, etc. – must be kept a minimum of 3 years
following Permit termination or expiration.
2. Site Description
2.1. Nature of Construction Activities
Chevron is proposing to construct the SKR 698-10-BV Pad, which consists of the
development of infrastructure to support the drilling and production of two (2) oil and gas
wells located in the SWSW of Section 10 and the NWNW of Section 15, Township 6 South,
Range 98 West, 6th Principal Meridian. The proposed location is zoned resource lands per
Garfield County and is currently used for a storage facility.
The existing Skinner Ridge Storage Facility location disturbance is 6.2 acres, and 0.7 acres
of additional disturbance is proposed for construction of stormwater detention ponds and
channels at the SKR 698-10-BV Pad. The working pad surface (WPS) will be 3.8 acres.
The Pad disturbance area will be reduced to 2.3 acres during interim reclamation. There will
be 0.1 acres of disturbance for a proposed access road, and 9.5 acres for flowline corridor
areas. The flowline corridor area will be completely reclaimed following construction.
Generally, oil and natural gas operations encompasses three distinct work phases: building
infrastructure/drilling and completions (construction phase), operating facilities (production
phase), and plugging/abandoning/reclaiming (abandonment phase). Ground-disturbing
work is typically limited to the construction and abandonment phases.
Typical activities where ground disturbance may occur include:
• Well pad or facility construction;
• Flowline installation;
• Access road development; and
• Reclamation.
436
2.1.2 Long-Term Stormwater Management and Final Stabilization
Long-term stormwater management and final stabilization are achieved through reclamation
practices. Reclamation activities include site grading, preparation, and revegetation that
inhibits stormwater runoff and promotes surface stabilization. Together, these practices
stabilize disturbed soils until the location meets CDPHE and ECMC Final Stabilization
criteria. CDPHE’s Fact Sheet for Modification, 1 Permit Number COR400000, GENERAL
PERMIT FOR STORMWATER DISCHARGES ASSOCIATED WITH CONSTRUCTION
ACTIVITY defines Final Stabilization as:
“The condition reached when construction activities at the site have been completed,
permanent stabilization methods are complete, and temporary control measures are
removed. Areas being stabilized with a vegetative cover must have evenly distributed
perennial vegetation. The vegetation coverage must be, at a minimum, equal to 70 percent of
what would have been provided by native vegetation in a local, undisturbed area or
adequate reference site."
Additionally, CDPHE determines that Final stabilization is reached when (1), (2), and (3)
below are complete:
(1) All construction activities are complete.
(2) Permanent stabilization methods are complete. Permanent stabilization methods
include, but are not limited to, permanent pavement or concrete, hardscape,
xeriscape, stabilized driving surfaces, vegetative cover, or equivalent permanent
alternative stabilization methods. The division may approve alternative final
stabilization criteria for specific operations. Vegetative cover must meet the following
criteria:
a. Evenly distributed perennial vegetation, and
b. Coverage, at a minimum, equal to 70 percent of what would have been provided by
native vegetation in a local, undisturbed area or adequate reference site.
(3) The permittee must ensure all temporary control measures are removed from the
construction site once final stabilization is achieved, except when the control measure
specifications allow the control measure to be left in place (i.e. biodegradable control
measures).
In order to satisfy these requirements, locations must be contoured to minimize erosions,
seeded, and CMs installed. However, locations must be monitored and maintained until Final
Stabilization is achieved. Locations will be routinely inspected and repaired as needed as the
location progresses to satisfactory revegetation. Inspection and maintenance practices are
described in Section 5.
Once a location has achieved Final Stabilization, CDPHE coverage is no longer required.
The site may, however, still require stormwater management under ECMC’s 1000 Series
rules. In these instances, Chevron has prepared and implemented a Post-Construction
SWMP for the Skinner Ridge Production Operations. The Post-Construction SWMP
outlines procedures for maintaining stormwater compliance per ECMC regulations and is
independent of the CDPHE Permit.
437
2.2. Sequence of Major Construction Activities
As noted in the previous section, oil and natural gas operations occur across three general
work phases: construction, production, and abandonment. The general construction
sequence is as follows:
(1) Site clearing/grubbing;
(2) Site excavation and Pad construction;
(3) Well drilling and completion (well pads);
(4) Installation of equipment, utilities, and appurtenances (well pads and facility pads);
(5) Stabilization, reclamation, and long-term stormwater management
Table 1 provides a summary of CMs used through construction activities, and Table 2
details structural controls specific to the phases described in the following subsections. CM
implementation is discussed in Section 4.
For stormwater management and compliance purposes, construction sites have been
divided into four stormwater stages: Construction, Completed, Interim Stabilization, and
Final Stabilization. This classification allows for alignment of CDPHE and ECMC
stormwater and reclamation regulations specific to oil and gas development. The
following sections define individual stormwater stages and their respective activities.
Details regarding inspection frequency at these locations is presented in Section 5.
2.2.1 Construction Stage
The Construction Stage includes activities associated with infrastructure development from
initial pad clearing through interim reclamation. The typical construction sequence includes
site clearing/grubbing; site excavation, material import, construction, and compaction; well
drilling and completion; installation of equipment, utilities, and appurtenances; and pad
minimization through material export, recontouring, and decompaction. Well pads,
production facilities, flowlines, and roads are built during this phase. CMs are installed prior
to beginning construction activities. Temporary structural controls are installed prior to
disturbance work, while permanent structural CMs are installed as applicable during
construction.
2.2.2 Completed Stage
Once the site has been built and construction activities have ceased, either temporarily or
permanently, and the permanent CMs have been installed and determined adequate, the
location progresses to the Completed Stage. Locations in the Completed Stage have not
been revegetated. Activities normal to the Completed Stage include routine production work
(liquids hauling, routine location maintenance, etc.). Ground-disturbing activities are
uncommon during this stage.
2.2.3 Interim Stabilization Stage
Site activities during the Interim Stabilization Stage are similar to the Completed Stage.
However, to progress to the Interim Stabilization Stage, the location must meet the site
438
preparation requirements for interim reclamation in accordance with ECMC 1000 series
rules. This includes that the site has no further disturbance activities ongoing or planned,
disturbed surfaces have been built on, compacted, covered/paved or otherwise stabilized,
and the location has been seeded. Temporary and permanent CMs may be employed.
Locations remain in the Interim Stabilization phase, including requirements for inspections
and maintenance, until Final Stabilization criteria are met.
2.2.4 Final Stabilization Stage
As defined in Section 2.1.1, CDPHE considers a location to have achieved Final
Stabilization when that site has met the interim reclamation preparation requirements and
has achieved vegetative cover equal to or exceeding 70% of pre-disturbance coverage.
Croplands, however, are exempt from the 70% coverage requirement. Sites built in
cropland may progress to Final Stabilization as long as construction activities have been
completed, have been prepared in accordance with ECMC Rule 1003.e, and have been
returned to agricultural use.
Although they will undergo abandonment and reclamation following its productive lifespan,
producing oil and gas sites are considered finally stabilized under CDPHE requirements
once site conditions meet the criteria above. Accordingly, CDPHE Permit coverage may be
terminated at locations meeting CDPHE’s final stabilization requirements. However, as
long as the site is in production, annual inspections will be performed per ECMC
requirements.
Once the wells are no longer economical to operate, they will be plugged & abandoned
(P&A’d) and the location recontoured and reclaimed to pre‐disturbance conditions and/or in
accordance with the surface owner’s wishes. When a well is P&A’d, the well head
assembly is removed and the well permanently plugged downhole.
All equipment associated with the well is removed from the location unless the equipment is
also used by other wells on the pad or in the area. Flowlines may be re‐routed or
abandoned as necessary. Once all equipment has been removed from the location and the
well or wells are P&A’d, the location and associated access roads will be recontoured and
reclaimed to pre‐ disturbance conditions and/or in accordance with the surface owner’s
wishes. Rock surfacing on the pad and access roads will be removed for beneficial re‐use
or offsite disposal. Topsoil will be respread following recontouring and decompaction to pre‐
disturbance conditions. All culverts, cattle guards, or other extractable structural CMs will
be removed and either reused at new construction sites, recycled as scrap, or disposed of
as solid waste. Once the location is recontoured, topsoil is reapplied across the location in
preparation for seeding. The reclamation is monitored until ECMC requirements are met
and the location is cleared for final reclamation
2.3. Total Disturbance Area
The total proposed disturbance area for the SKR 698-10-BV Pad is 6.9 acres, including 6.2
acres of existing disturbance. The acreage will be reduced after interim reclamation to 2.3
acres once all drilling and completion activities are complete at the SKR 698-10-BV Pad to
minimize the long‐term disturbance during the production phase. The permitted fieldwide
Skinner Ridge Drilling and Production Program Area boundaries are shown on Figure 1,
and the site-specific layout drawings for the SKR 698-10-BV Pad are shown on Figure 2.
The disturbed area is recorded in the SWMP Comp database as a component of routine
inspections (see Section 5).
439
2.4. Soil Description
To determine anticipated site characteristics for the project site, Geographic Information
System (GIS) data from the Natural Resource Conservation Service (NRCS,
http://websoilsurvey.nrcs.usda.gov/app/) along with aerial photography was overlain on the
site proposed disturbance boundary to derive potential ecological site descriptions (ESDs)
and NRCS soil map units. A desktop review of the proposed project area indicates the
presence of 44 – Happle very channery sandy loam, 3 to 12 percent slopes and 46 –
Happle-Rock outcrop association, 25 to 65 percent slopes.
The soils reports can be found in Appendix B.
2.5. Vegetation Description
The permitted area cropland is zoned as resource lands and is currently used as a storage
facility. The location will be returned to rangeland following interim reclamation.
2.6. Receiving Waters and Stream Crossings
The nearest downgradient surface water feature is a field-delineated riverine habitat (Deer
Park Gulch) located 148 feet southeast of the location (167 feet along contaminant
migration pathway).
Nearest water body information also can be viewed at following website:
https://cogccmap.state.co.us/cogcc_gis_online/.
2.7. Non-Stormwater Discharges and Construction Dewatering
Except in specific circumstances, the Permit does not cover non-stormwater discharges
from permitted locations. A non-stormwater discharge is considered any discharge from the
facility that is not entirely composed of rainfall/snowmelt. Non-stormwater discharges that
are permissible under the permit include:
• Discharges from uncontaminated springs that do not originate from an area of land
disturbance;
• Discharges to the ground of concrete washout water associated with the washing of
concrete tools and concrete mixer chutes. Discharges of concrete washout water must
not leave the site as surface runoff, or otherwise reach receiving waters; and
• Discharges of landscape irrigation return flow.
Incidental construction dewatering, which is classified as a non-stormwater discharge, may
occur at Chevron construction locations. CDPHE has implemented a separate low-risk
dewatering guidance which enables groundwater dewatering discharge under specific
circumstances. Prior to conducting dewatering activities, locations will be assessed to
determine if they meet the low-risk criteria. Appropriate controls and procedures must be
implemented prior to discharge. When dewatering activity that does not meet low-risk
discharge criteria, Chevron will apply for a separate construction dewatering permit from the
state, as required. Should dewatering take place, appropriate CMs will be implemented to
prevent erosion or other contamination.
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3. Identification of Potential Pollution Sources
3.1. Potential Pollution Source Assessment
Stormwater pollutants may include any potentially detrimental material capable of offsite
transport when mobilized by precipitation or wind. Generally, potential stormwater pollutant
sources in oil and gas operations include soil disturbance, bulk storage, and operation and
maintenance activities. Typical pollutants associated with these activities are sediment
(resulting from site erosion) and so-called significant materials. The Permit defines
significant materials broadly as materials that have the potential to be released with
stormwater discharges and includes raw materials, fuels, solvents, fertilizers, pesticides,
hazardous substances, and waste products.
The Permit requires a detailed assessment of potential site pollutant sources. Specifically,
the following sources must be evaluated:
• Disturbed and stored soil;
• Vehicle tracking controls;
• Management of contaminated soil;
• Loading and unloading operations;
• Outdoor storage activities;
• Vehicle and equipment maintenance and fueling;
• Dust- or particulate-generating processes;
• Routine maintenance activities;
• On-site waste management practices;
• Concrete truck washing/equipment washing;
• Dedicated asphalt/concrete batch plants and masonry mixing stations; and
• Non-industrial waste sources.
The following subsections detail potential pollutant exposure resulting from these individual
sources. Additionally, a summary of pollutant source applicability and corresponding
mitigating CMs is presented in Table 3.
3.1.1 Disturbed and Stored Soils
During initial location construction and during reclamation, activities will include significant
soil- disturbing activities, which may introduce erosion as a potential pollutant source. Soil
disturbance will also occur during site reclamation activities. Additionally, topsoil and/or
overburden may be stored on site, intended for post-abonnement reclamation.
441
3.1.2 Vehicle Tracking Controls
Locations are anticipated to experience offsite traffic during both construction and routine
production operations. Accordingly, offsite tracking of sediment may pose stormwater
pollution potential.
3.1.3 Management of Contaminated Soils
During both construction and routine production activities, significant materials may be
present. Incidental spills of these materials would conceivably generate contaminated soils.
Contaminated soils may subsequently be stored in stockpiles onsite to await characterization
and either treatment or disposal.
3.1.4 Loading and Unloading Operations
Outdoor loading and unloading activities occur during construction, well drilling, well
completion, and production activities. This includes loading/unloading of significant
materials. Well drilling and completion materials are unloaded from trucks into site tanks or
directly into the well. During construction, on-site fuel tanks may be refilled as needed.
Spills during these processes may present potential stormwater pollutants. Similarly,
outdoor non-petroleum chemical storage may occur at locations as part or routine
operations and maintenance. These items may be restocked from bulk transport.
3.1.5 Outdoor Storage Activities
Short-term and/or long-term outdoor significant material storage may occur at Chevron
locations, particularly at well pads or production facilities. Materials stored temporarily are
generally associated with drilling and completion activities, while materials stored long term
are associated with routine production activities (e.g., maintenance, operation, etc.).
Materials stored outside are subject to good housekeeping and material handling CMs
(Section 4.0) but may still be exposed to precipitation.
3.1.6 Vehicle and Equipment Maintenance and Fueling
Chevron may periodically conduct re-fueling operations on location. Equipment subject to
onsite refueling includes dirt moving equipment, vehicles, and generators. Routine vehicle
maintenance is typically not conducted onsite. However, in some instances such as
breakdown, vehicle maintenance may need to occur onsite. Additionally, maintenance of
well heads, separators, or other production equipment will be a routine occurrence during
production. During these activities, lubricants, oils, fuels, and solvents may be spilled or
otherwise exposed to stormwater.
3.1.7 Dust or Particulate Generating Processes
Routine site traffic and/or site construction and excavations may produce dusty conditions,
depending on soil and weather conditions. Dust and particulate generation tend to occur in
areas with fine soils, dry conditions, and high winds – conditions which exist in some
portions of the Permit area.
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3.1.8 Routine Maintenance Activities
Once locations have been constructed and are fully operational, routine maintenance will
be part of standard operations. Well heads, separators/treaters, etc. might all require routine
maintenance. Equipment maintenance may include the use of solvents, lubricants, or other
chemicals. Additionally, herbicides will be applied, as warranted, to control noxious weeds;
however, they will not be stored in bulk onsite.
3.1.9 On-Site Waste Management Practices
Waste generated at oil and gas facilities is generally classified as Exploration and
Production (E&P) waste. E&P wastes generated at Chevron sites may include drilling
byproducts, completion waste products, tank bottoms, workover wastes, pigging wastes,
and other common E&P waste. Wastes are managed according to applicable State and
Federal regulations. Contaminated materials may be stored or stockpiled onsite during
accumulation, treatment, or characterization activities. Although proper segregation
practices will be used, potential for stormwater impacts exist.
3.1.10 Concrete Truck/Equipment Washing
Concrete truck/equipment washing, including the concrete truck chute and associated
fixtures and equipment, is not anticipated at the SKR 698-10-BV Pad. Concrete is typically
mixed in the drill hole and concrete truck/equipment washing is conducted offsite.
3.1.11 Dedicated Concrete and Asphalt Batch Plants and Masonry Mixing Stations
Chevron does not own or operate dedicated concrete/asphalt batch plants or masonry
mixing stations located within the Permit area.
3.1.12 Non-Industrial Waste Sources
During site construction when large numbers of workers may be present on a site, general
rubbish (litter, packaging, etc.) may be generated as part of routine work. Similarly, during
these activities, portable toilets may be present onsite to service field staff. Cleanup of trash
and discarded materials will be conducted as needed. Although Chevron requires both to
be monitored, improper management may allow wastes to impact stormwater.
4. Stormwater Management Controls
4.1. Control Measure Implementation
The incidence of pollutants reaching State Waters may be reduced or eliminated through
CM implementation at the SKR 698-10-BV Pad. Chevron utilizes two types of CMs to
manage stormwater pollutants: structural CMs and nonstructural CMs. Structural CMs
include physical barriers that prevent or minimize stormwater impacts. Nonstructural CMs
are not physical devices and are implemented at the administrative or planning level. A
summary of structural and non-structural CMs used by Chevron are shown in Table 1.
Typically, a combination of structural and non- structural CM will be implemented at
Chevron construction sites. CMs will be selected according to potential pollutant sources
and site-specific conditions. Table 3 summarizes potential pollutant sources and
corresponding CMs. Site stormwater controls will be implemented based on best
management practices, including structural and nonstructural controls, and will ultimately be
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stabilized for long-term operations. Structural and nonstructural CM practices are discussed
in the following subsections, and a concise list of site-specific CMs (BMPs) that will be
implemented at the location is provided in Appendix C.
Physical CMs are intended to be used as part of a treatment train (consecutive CMs,
working in tandem) that is both compliant with current rules and acceptable to the
landowner. Operations specifically conducted within the boundaries of the Skinner Ridge
permit will utilize CMs specified in the CM manual.
4.1.1 Structural Practices for Erosion and Sediment Control
Structural practices are physical devices or barriers employed to reduce erosion, manage
stormwater, or inhibit sediment transport. Site construction normally requires the removal of
vegetative cover and topsoil, subsequently increasing peak flood flows, runoff velocity, and
the total stormwater runoff volume. These factors contribute to increased runoff, erosion,
and offsite sediment transport. Accordingly, the primary objective of structural controls is to
inhibit erosion and sediment transport.
Structural CMs (formerly BMPs) broadly fit into two categories: erosion controls and
sediment controls. Erosion control measures typically inhibit erosion through surface
stabilization and reduced runoff velocities. Sediment control measures are hydraulic
controls that promote deposition of suspended particles. Erosion control and sediment
control measures are used in conjunction with one another. Common structural CMs
implemented during various construction stages (Section 2.2) are shown in Table 2.
As with other locations, structural CMs will be implemented based on good hydraulic and
engineering practices. Structural CM practices specific to the SKR 698-10-BV Pad located
within the Skinner Ridge Drilling and Production Program Area will include the following:
• Berm (B);
• Culvert (C);
• Ditch/channel (D);
• Hydro-mulch (HM);
• Riprap (R);
• Sediment basins/detention ponds (SB);
• Seeding (S);
• Soil roughening (SR); and
• Vehicle tracking control (VTC).
In order to be effective, structural CMs must be properly installed/constructed and routinely
maintained. Chevron’s CM Manual provides detailed specifications regarding CM
construction and maintenance. Appendix C contains a summary of site-specific CMs.
Additionally, details regarding Chevron’s inspection and maintenance program are
presented in Section 5.
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4.1.1.1 Detailed Structural Practices
The following guidelines should be implemented, to the extent practicable, as minimum
structural CMs. See Appendix C for a concise, comprehensive list of site-specific CMs.
• To prevent tracking of sediment off site, vehicle tracking controls should be installed at
the start of work.
• Where conditions warrant, run-on will be diverted prior to reaching the pad.
• Stormwater leaving the site will encounter at least one treatment (sedimentation) CM
prior to discharge.
• Erosion and sediment control CMs will be installed in conjunction. CDPHE and ECMC
consider site erosion a violation of effluent limits, even if sediment is not transported of
site. Sediment controls alone are not considered sufficient.
• During construction near perennial streams, lakes, wetlands, or other State Waters
minimum vegetation requirements will be observed, as practicable.
• Mulch with netting or erosion control mats will be installed on all slopes 3:1 and steeper
and within 100' of special protection waters or 50' of surface waters.
• Culverts, discharge pipes, and emergency spillway outlets will be fortified with riprap or
slope protection to prevent erosion.
• At landowner request, locations will be fenced to limit access to cattle and unauthorized
travel. Fencing should include cattle guards (which may also serve as tracking
controls).
• Structural CMs should be installed in accordance with the CM manual specification. CM
manual available upon request.
4.2. Non-Structural Practices for Erosion and Sediment Control
Nonstructural CMs are not physical CMs but may promote similar hydrologic effects as
structural CMs (i.e., inhibiting runoff and erosion). They include a broad set of administrative
practices that reduce potential stormwater impacts. Good waste management practices,
good housekeeping, routine inspections/maintenance, good material handling practices,
and construction phasing are all examples of nonstructural CMs. Non-structural practices
are summarized in Table 1. The following subsections generally describe Chevron’s
nonstructural CMs. Appendix C provides a concise summary of site-specific CMs.
4.2.1 Phased Construction and Vegetation Preservation
Phased construction scheduling can limit the disturbed area exposed to stormwater at a
given time. Using this practice, permittees perform construction/disturbance activities in a
phased manner and only clear areas as when they intend to perform work in the near term
(as opposed to clearing an entire development area at once). This approach reduces
erosion from areas that may not be immediately scheduled for construction by allowing
existing vegetative cover to reduce stormwater runoff.
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Similarly, preserving existing vegetative cover when possible will reduce the area
susceptible to erosion and reduce sediment transport. Construction practices should be
implemented that preserve existing vegetation and limit unnecessary disturbances.
4.2.2 Material Handling and Spill Prevention
Significant materials that may be stored onsite include fuel and lubricants for construction
equipment and vehicles, small quantities of paints and solvents, water- or gel-based drilling
fluids used during well completion, concrete, produced water, and crude oil/condensate.
Safety Data Sheets (SDS) for materials to be used or that are produced are maintained in
Chevron’s online database or maintained on site. Significant materials should be limited to
as-needed quantities for the immediate operations underway.
Materials management practices will be used to reduce the risk of spills or other accidental
exposure of materials and substances to stormwater runoff. This includes the use of drip
pans, properly covering containers, and proper material storage (e.g., on pallets).
Additionally, materials stored in bulk (i.e., exceeding 55 gallons) will have secondary
containment or equivalent protection. Excess material that accumulates within secondary
containment that comingles with stormwater will be removed when one-half (½) of
containment capacity is reached. All material removed from containment will be disposed
of at an approved and permitted disposal facility.
Any unintentional release will be promptly reported according to Chevron’s Incident
Reporting Procedure. Spills will be contained and cleaned up using approved spill
procedures. If spill impacts warrant further attention, sites may also undergo remediation.
Stockpiled materials, such as topsoil or overburden, will have appropriate structural CMs
installed. Most commonly, this will include surface roughening/vehicle tracking and/or
tackifier application. Additionally, good segregation practices will be employed to prevent
material comingling (e.g., topsoil segregated from overburden or contaminated materials
segregated from clean materials).
4.2.3 Vehicle Tracking Control
As described in Section 4.1.1, Chevron will introduce structural CMs to mitigate vehicle
sediment tracking. If these are found to be inadequate, Chevron may introduce
nonstructural CMs, such as street sweeping or surface stabilization, into the construction
planning process.
4.2.4 Waste Management Practices
Typical wastes generated at Chevron project area construction sites include trash, portable
toilet liquids, maintenance lubricants/liquids, drill cuttings, and flowback wastes. These
wastes may be temporarily stored on location. Wastes will be properly stored onsite and
prevented from comingling with stormwater or being blown offsite. Segregation techniques
may include proper containerizing, berm/containment construction, or absorbent boom
deployment. All collected waste will be properly characterized and, when practicable, it will
be reused or recycled. All waste that is not reused or recycled will be disposed of at an
approved and permitted disposal facility. Wastes generated at Chevron facilities include
multiple categories. Specific waste management practices for individual categories that
may be stored on site are described in the following subsections.
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4.2.4.1 Non-Industrial Waste
Non-industrial wastes include litter, package materials, shipping materials, food wastes,
portable toilets, and all other general wastes. At Chevron locations, trash is stored in
covered dumpsters to limit stormwater contact and wind transport. Dumpsters are routinely
emptied by a dedicated contractor and disposed of at an approved and permitted facility.
Portable facilities are anchored to prevent them from tipping over. These facilities are also
emptied and maintained by a dedicated contractor on an as-needed basis. During
stormwater inspections, portable facilities are checked for the presence of anchoring
devices.
4.2.4.2 Preventative Maintenance Waste
Routine equipment maintenance during production activities may produce wastes. All
routine maintenance lubricants/liquids (used or unused) 55 gallons or greater are kept in
secondary containment. Used lubricants/liquids are removed from the site and disposed of
at an approved and permitted facility.
4.2.4.3 Exploration and Production Waste
E&P wastes are wastes generated during exploration, development, or production at oil and
gas sites. All E&P waste will be disposed of or recycled in accordance with ECMC 900
series rules and regulations.
4.2.4.4 Non-Routine Waste Generation
Periodically, non-routine wastes (such as tank bottoms) may be generated at a location.
Non- routine wastes will be characterized and disposed of in accordance with applicable
regulations.
4.2.5 Good Housekeeping
Chevron has implemented good housekeeping practices as part of routine operations.
Housekeeping CMs include procedures to promote regular cleaning, organization, and
maintenance of temporary and permanent equipment, and routine maintenance of
structural CMs. Conducting routine site inspections is a critical component of good
housekeeping. Chevron’s inspection and maintenance program is described in Section 5.
The following good housekeeping practices are part of routine operations:
• Bulk storage containers 55 gallons or greater housed onsite for production
operations are stored in secondary containment;
• Use of drip pans and or sorbent materials during vehicle maintenance or material
handling;
• Properly cover/seal material containers;
• Conduct routine site inspections;
• Promptly address corrective actions identified during inspections;
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• Maintain stormwater management structures and components;
• Routine trash collection and disposal;
• Properly labeling significant material containers;
• Promote quick spill response/clean up by familiarizing employees and contractors with
spill cleanup procedures; and
• Familiarize employees and contractors with good housekeeping procedures and
pollution prevention procedures.
5. Inspection and Maintenance Procedures
5.1. Inspection Scope
Routine inspections are conducted to evaluate the implementation, effectiveness, and
condition of structural and nonstructural control measures. Inspections will be conducted by
individuals trained to evaluate stormwater management practices and meeting the definition
of a QSM (Section 1.3).
Inspections have four objectives:
• Visually verify structural CMs are installed and operating according to specifications;
• Identification of new or changing onsite pollutant sources;
• Assess the adequacy of structural and nonstructural CMs and identify areas requiring
new or modified control measures to minimize pollutant discharges; and
• Identification of any areas of maintenance, non-compliance, and/or corrective actions.
Inspectors will document non-compliance conditions or maintenance items identified during
inspections. Corrective actions and/or routine maintenance items identified during
inspections will be addressed in a timely manner. Corrective actions and routine
maintenance are discussed in Section 5.2. As a site evolves during the construction cycle,
inspectors will document changes on reports and site figures, as warranted. Inspection
report contents are detailed in Section 5.5.
During an inspection, inspectors should evaluate locations for pollutants leaving the site, or
discharging to state waters. The Permit requires the following areas be inspected at each
site:
• Construction site perimeter;
• All disturbed areas;
• Designated haul routes;
• Material and waste storage areas exposed to precipitation;
• Locations where stormwater has the potential to discharge offsite; and
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• Locations where vehicles exit the site.
For stormwater compliance purposes, construction sites have been divided into stormwater
inspection stages (Section 2.2): Construction, Completed, Interim Stabilization, and Final
Stabilization. Under this SWMP, only Construction, Completed, and Interim Stabilization
phase sites will be inspected. Once a site achieves Final Stabilization, Permit coverage for
that site is terminated. The inspection schedule across the various construction phases is
discussed in Section 5.3.
5.2. Preventative Maintenance and Corrective Actions
During an inspection, inspectors may identify CMs that require maintenance. Generally,
these CM repairs will fall into two categories: preventative maintenance and corrective
actions.
Preventative maintenance repairs are those where the CMs are still performing adequately,
but the CM requires proactive maintenance. An example of preventative maintenance
would be clearing small amounts of sediment from a sediment trap. Individual CM
maintenance requirements are detailed in the CM Manual. There is no mandatory Permit
timeline for repair; however, preventative maintenance should be conducted as soon as
practicable – otherwise the finding may move to a corrective action.
A corrective action, in contrast, is when a CM is found to have failed or would fail during the
next rain event or is inadequate. Examples of corrective actions include a sediment log
which has been overwhelmed (leading to sediment discharge) or sediment accumulating
above acceptable levels identified in manufacturer specifications. Maintenance
specifications are provided in the CM Manual. The Permit requires corrective actions to be
repaired upon discovery and the permittee is noncompliant with the Permit until the
corrective action(s) are resolved. Additionally, materials (e.g., sediment) leaving the site
may need to be recovered. If immediate action on a corrective action is infeasible, Chevron
will document why it is infeasible and include a repair schedule.
Chevron will manage repairs through its database system. Repair items identified during
inspections will be captured in the database. Repair items will be summarized and sent to
construction foreman or contractors for assignment. Contractors performing repairs
subsequently document repairs as completed in the database, and repairs identified as
completed are automatically rescheduled to undergo follow-up inspections.
5.3. Inspection Schedule
Chevron conducts routine site inspection from the start of construction through Final
Stabilization. The Permit allows for varying inspection frequencies based on what
construction stage the locations is currently in. For stormwater tracking and compliance,
Chevron has designated four stormwater stages: Construction, Completed, Interim
Stabilization, and Final Stabilization. Project stages are described in Section 2.2.
ECMC does not specify frequency of stormwater inspections; however, Chevron is bound to
comply with CDPHE stormwater requirements until a location (non-crop) reaches 70% of
original vegetation and enters the final stabilization stage. In the final stabilization stage,
Chevron continues to inspect the location on an annual basis to ensure sites are
continuously monitored per ECMC 1000 series rules. The inspection frequencies discussed
in the following subsections 5.3.1 to 5.3.5 meet both ECMC and CDPHE requirements for
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each stage of stormwater compliance.
Effective August 12, 2020, CDPHE granted the approval of an alternate inspection
schedule only for locations that have been plugged and abandoned (P&A). The approval is
limited to the construction activities identified in the applications on file for permit
certifications COR403291, COR403294, COR403293.
When evaluating locations for “elevated risk,” two primary factors will be considered: slope
and proximity to State Waters.
• Locations with slopes greater than or equal to 3:1 slope will be categorized as
increased risk locations.
• Locations within 500 feet of a spring, stream, wetland, municipal system, other State
Waters will be considered increased risk. This distance is based on ECMC Tier 1
stormwater criteria and was selected to maintain alignment with ECMC rules.
Under the alternative inspection schedule, inspection frequency would be based on risk
categorization. Locations will be assigned to one of two categories for initial inspections:
“standard sites” or “elevated risk.” Additionally, inspection frequencies would be increased
on an individual basis at locations where corrective actions have been observed (corrective
actions will be addressed as required in the LCGP). Under this approach, inspections
would be completed at the following frequencies:
• Bi-annual inspection site visits for standard risk locations.
• Quarterly visits for locations with elevated risk, until 50% revegetation is achieved; bi-
annual inspections thereafter.
• Regardless of initial risk categorization, locations with corrective actions will be
inspected within 14 days of the corrective measure implementation to ensure
satisfactory performance and then returned to their original category.
5.3.1 Construction Stage Inspections
When the SKR 698-10-BV Pad is being actively constructed, it is considered to be in the
Construction Stage. During active construction, CDPHE allows permittees to select one of
the following two inspection frequencies:
• At least one inspection every 7 calendar days; OR
• At least one inspection every 14 calendar days, if post-storm event inspections are
conducted within 24 hours following precipitation which causes surface erosion.
Under scenario 2, an additional reduced inspection frequency provision exists. If no
construction activities will occur following a storm event at a temporarily idle site, post-storm
event inspections will be conducted prior to re-commencing construction activities, but no
later than 72 hours following the storm event. Routine inspections will still be conducted at
least every 14 calendar days.
The selected inspection frequency will be noted on inspection forms. During wetter months,
typically April to October, inspections will fall under scenario 1. For the remainder of the
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year, November to March, Chevron will shift to inspection scenario 2 and complete
inspections every 14 days since there is a reduced potential for erosion. Alternating
between inspection frequencies meets both the requirements in ECMC 1000 series rules
and CDPHE stormwater regulations.
5.3.2 Completed Stage Inspections
The SKR 698-10-BV Pad will enter the Completed Stage once disturbance activities have
ceased and all of the interim reclamation work has been completed, except that the site has
not yet been revegetated. For example, this may occur if a site cannot be re-seeded due to
weather or seasonal conditions, but all other construction and reclamation is complete.
Once the Pad enters the Completed Stage, it will be inspected a minimum of once every 30
days. Post-precipitation inspections are not required once the Pad is in the Completed
Stage. However, more frequent inspections may be directed by Chevron to confirm
adequate maintenance or repairs.
5.3.3 Interim Stabilization Stage Inspections
Interim Stabilization is generally similar to the Completed stage, except the site has also
undergone re-seeding. As with the Completed Stage, inspections will be conducted at least
once every 30 days (but are not needed after precipitation events) until Final Stabilization is
reached.
5.3.4 Final Stabilization Stage Inspections
Once the site achieves sufficient revegetation and meets the CDPHE requirements, its
Permit coverage is terminated. Inspections will no longer be required under CDPHE
requirements; however, they will be conducted annually under aforementioned ECMC rules.
5.3.5 Bond Release Inspections
Once equipment has been removed from a location and after wells are plugged and
abandoned, the site is inspected under an alternate inspection frequency until bond
release:
• Bi-annual inspection site visits; or
• Quarterly visits for locations with “elevated risk,” until location achieves 50%
revegetation, with bi-annual inspections thereafter.
• Regardless of initial risk categorization, locations with corrective actions will be
inspected within 14 days of the corrective measure implementation to ensure
satisfactory performance and then returned to their original category.
5.4. Winter Conditions Exclusion
Inspections will not be required at facilities meeting all of the following conditions:
construction activities have been temporarily halted; snow cover exists over the entire site
for an extended period; and melting conditions do not exist. This exception applies to all
Construction stages. When this exclusion is implemented, Chevron will document the
following:
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• Dates when snow cover existed;
• Date when construction ceased; and
• Date melting conditions began.
5.4.1 Precipitation Event Inspections
When necessary, site inspections will be conducted within 24 hours after a precipitation or
snowmelt event that causes surface erosion on sites where construction is occurring.
Surface erosion generally occurs when precipitation or snowmelt results in surface water
flow. If the precipitation infiltrates, then no inspection is required. In order to determine if
surface erosion or surface water flow resulted from a precipitation or snowmelt event,
locations with active construction within the area of rainfall will be evaluated for surface
erosion, offsite sediment transportation, and/or offsite release of muddy water. If the
selected locations and associated areas do not show any onsite surface erosion, offsite
sediment release, or offsite muddy water releases, none of the remaining construction sites
will be inspected.
Inspection results of the locations will determine or trigger the inspection of all locations in
the construction phase. Selection of sites to be evaluated may be based on one or more of
the following criteria:
• A site that has a cut or fill slope that has a steeper grade than 4:1;
• A site that has erosion and/or sediment control structures installed and is near
surface water; and
• Total precipitation in an area based on available weather data.
5.5. Inspection Reporting
The Permit requires Chevron to conduct inspections at individual disturbance sites.
Additionally, permittees are required to document inspections, including recording
noncompliance incidents. Inspection observations are recorded on an electronic inspection
report form, which is integrated into Chevron’s stormwater database. Inspections reports
should contain the following elements:
(1) Inspection date
(2) Names(s) and title(s) of personnel making the inspection
(3) Weather conditions at the time of inspection
(4) Construction phase observed during inspection
(5) Estimated acreage of disturbance at inspection
(6) Location(s) of discharges of sediment or other pollutants from the site
(7) Location(s) of CMs that need to be maintained
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(8) Location(s) and identification of inadequate CMs
(9) Locations and identification of additional CMs are needed that were not in place at time
of inspection
(10) Description of current site inspection schedule assignment
(11) Deviations from the minimum inspection schedule
(12) When a site is free from corrective actions, or following resolution of corrective
actions, a designated QSM will sign/certify the following statement: “I verify that, to
the best of my knowledge and belief, all corrective action and maintenance items
identified during the inspection are complete, and the site is currently in compliance
with the Permit.”
Maintenance items identified on inspections reports are summarized and distributed to
individuals responsible for repairs. When repairs cannot be promptly completed, Chevron
will document the reason for the delay and include a completion timeline.
As part of routine inspections, QSMs will update individual site maps to reflect conditions
during field inspections. Individual site maps will be created for each disturbance location
and updated continuously until Final Stabilization. Required site map elements are
discussed in the following subsection.
5.5.1 Site Maps
Permittees are required to develop and maintain site maps, detailing current site conditions.
Under Chevron’s Permit, individual maps will be created for disturbed areas (pad, facility,
etc.). QSMs will update maps following site visits as part of routine inspection reporting.
Site maps will contain the following information:
• Construction site boundaries
• Flow arrows depicting stormwater overland flow and runoff directions
• All areas of ground disturbance, including borrow and fill
• Soil stockpile areas
• Location of all waste accumulation areas, including areas for liquid, concrete,
masonry, and asphalt
• Locations of dedicated asphalt, concrete batch plants and masonry mixing stations
• Locations of all structural control measures
• Locations of all non-structural control measures
• Locations of springs, streams, wetlands and other state waters, including areas that
require pre-existing vegetation be maintained within 50 feet of a receiving water, as
feasible
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• Locations of all stream crossings within the construction site boundary
• Individual site maps will be stored in the stormwater database.
6. Attachments
Figures
• Figure 1 – Stormwater Project Overview Map - Skinner Ridge
• Figure 2 – Site-Specific Layout Drawings
Tables
• Table 1 – CM Selection Guidelines
• Table 2 – Structural and Non-Structural CM Classification
• Table 3 – Pollutant Assessment and Associated Control Measures
Appendices
• Appendix A – Spill Response Information
• Appendix B – NRCS Custom Soil Resource Report
• Appendix C –SKR 698-10-BV Pad SWMP SITE-SPECIFIC CM (BMP) List
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FIGURES
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FIGURE 1
STORMWATER PROJECT OVERVIEW MAP - SKINNER RIDGE
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FIGURE 2
SITE-SPECIFIC LAYOUT DRAWINGS
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UELS, LLCCorporate Office * 85 South 200 EastVernal, UT 84078 * (435) 789-1017
ENGINEERING & LAND SURVEYING
NOTES:
·Contours shown at 2' intervals.
CONSTRUCTION LAYOUT - PLAN VIEW
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DAYTON SLAUGH 06-29-23 SCALE
D.R.B.05-01-23 1" = 60'
SKR #698-10-BV PADTRACT 72, SECTIONS 10 & 15, T6S, R98W, 6th P.M.GARFIELD COUNTY, COLORADO
CHEVRON U.S.A. INC.
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CONSTRUCTION LAYOUT - DETAIL SHEET
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T.L.L.07-10-23 1" = 60'
SKR #698-10-BV PADTRACT 72, SECTIONS 10 & 15, T6S, R98W, 6th P.M.GARFIELD COUNTY, COLORADO
CHEVRON U.S.A. INC.
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CONSTRUCTION LAYOUT - CROSS SECTIONS
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SCALE
AS SHOWN
DAYTON SLAUGH 06-29-23
T.L.L.07-10-23
SKR #698-10-BV PADTRACT 72, SECTIONS 10 & 15, T6S, R98W, 6th P.M.GARFIELD COUNTY, COLORADO
CHEVRON U.S.A. INC.
UELS, LLCCorporate Office * 85 South 200 EastVernal, UT 84078 * (435) 789-1017
ENGINEERING & LAND SURVEYING
EXISTING PAD SURFACE DISTURBANCE ±3.814
ACRES
APPROXIMATE WELL SITE DISTURBANCE AREAS
EXISTING CONSTRUCTION DISTURBANCE ±2.348
TOTAL OIL & GAS LOCATION ±6.859
TOTAL OIL & GAS LOCATION (LOD)
N/A
±6.859NA
±29'
ACRESDISTANCE
APPROXIMATE SURFACE DISTURBANCE AREAS
TOTAL SURFACE USE AREA ±16.442
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EXISTING ACCESS ROAD DISTURBANCE N/A±388'
±9.109±4,981'80' WIDE PROPOSED FLUIDS PIPELINE R-O-W DISTURBANCE (OUTSIDE LOD)PROPOSED CONSTRUCTION DISTURBANCE ±0.697
REV: 4 11-16-23 T.L.L. (UPDATE LOD & ACREAGES)
±0.374±207'80' WIDE PROPOSED GAS FLOWLINE R-O-W DISTURBANCE (OUTSIDE LOD)
N/A±30'80' WIDE PROPOSED GAS FLOWLINE R-O-W DISTURBANCE (WITHIN LOD)
80' WIDE PROPOSED FLUIDS PIPELINE R-O-W DISTURBANCE (WITHIN LOD)
ADDITIONAL PROPOSED ACCESS ROAD SURFACE DISTURBANCE ±0.100±110'
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CONSTRUCTION LAYOUT - CROSS SECTIONS
SURVEYED BY
DRAWN BY
SCALE
AS SHOWN
DAYTON SLAUGH 06-29-23
T.L.L.07-10-23
SKR #698-10-BV PADTRACT 72, SECTIONS 10 & 15, T6S, R98W, 6th P.M.GARFIELD COUNTY, COLORADO
CHEVRON U.S.A. INC.
UELS, LLCCorporate Office * 85 South 200 EastVernal, UT 84078 * (435) 789-1017
ENGINEERING & LAND SURVEYING
H
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LD
N E L S ON
M
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HALL
32000
COL O R A D O REGIS
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SIONAL E N G I
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11-17-23
REV: 2 11-16-23 T.L.L. (UPDATE LOD)
463
