Hallmark-Barham Specific Plan EIR
Technical Appendices
Appendix E.4
Jurisdictional Findings
Memorandum
HELIX Environmental Planning, Inc.
703 Palomar Airport Road
Suite 200
Carlsbad, CA 92011
[email protected]
760.517.9060 tel
619.462.0552 fax
www.helixepi.com
Date: May 27, 2020
To: Ms. Mariana McGrain
Hallmark Communities, Inc.
740 Lomas Santa Fe Drive, Suite 204
Solana Beach, CA 92075
From: Stacy Nigro
Subject: Jurisdictional Findings for 943 Barham Drive Project Site, San Marcos, CA HELIX Proj. No.: HMC-16
Message: Dear Ms. McGrain,
This memo summarizes the jurisdictional findings from field work conducted on the property located at 943 Barham Drive, San Marcos, California.
Methods
HELIX Environmental Planning, Inc. (HELIX) biologists Stacy Nigro and Jason Kurnow conducted a site visit on April 24, 2020 to assess the property for potential wetland habitats that could be potentially subject to the regulatory jurisdiction of the U.S. Army Corps of Engineers (USACE) pursuant to Section 404 of the federal Clean Water Act (CWA), Regional Water Quality Control Board (RWQCB) pursuant to Section 401 of the CWA, and/or habitats regulated by the California Department of Fish and Wildlife (CDFW) pursuant to Section 1600 of the California Fish and Game Code.
Prior to beginning fieldwork, aerial imagery (Google Earth), the local soil survey, and National Wetland Inventory (U.S. Fish and Wildlife Service 2020) and U.S. Geological Survey quadrangle maps were reviewed to determine the location of potential jurisdictional areas within the project site.
Plants were identified according to The Jepson Manual: Vascular Plants of California (Baldwin et al. [2012]). Wetland affiliations of plant species follow the National Wetland Plant List (Lichvar et al. 2016).
Soils information was taken from the U.S. Department of Agriculture’s (USDA’s) Web Soil Survey (2020) and USDA Hydric Soil Lists (1992). Soil colors were identified according to Munsell’s Soil Color Charts (Kollmorgen 1994).
Potential USACE
and RWQCB wetlands were determined using three criteria (vegetation, hydrology, and soils) established for wetland delineations as described within the Wetlands Delineation Manual (Environmental Laboratory 1987) and Arid West Regional Supplement (USACE 2008).
Potential CDFW
wetlands were determined based on the presence of riparian vegetation or a stream.
HELIX
Environmental Planning
Memorandum (cont.)
HELIX Environmental Planning, Inc.
703 Palomar Airport Road
Suite 200
Carlsbad, CA 92011
760.517.9060 tel
619.462.0552 fax
www.helixepi.com
Four sampling points were studied, and soil pits were excavated at each of these locations. Photographs taken of the sampling points are included in Attachment A. Standard USACE wetland determination data forms were completed for each sampling point in the field, and are included in Attachment B.
Results
None of the four sampling points were determined to be wetland. The results for each sampling point are summarized below and further details can be found in Attachment B. Normal circumstances were present and neither vegetation, soil, or hydrology were significantly disturbed or naturally problematic.
In addition, soil map units on site are not on the USDA Hydric Soils List and the National Wetlands Inventory does not show any features on the site.
Sampling Point 1A
Sampling Point 1A was taken in a low area of non-native grassland in the central portion of the site.
Ripgut grass (Bromus diandrus), an upland species, was the dominant species present, thus the hydrophytic vegetation criterion was not met. A soil pit excavated to 19 inches did not reveal the presence of hydric soil indicators, thus the hydric soil criterion was not met. No secondary or primary indicators of wetland hydrology were observed; thus, the wetland hydrology criterion was not met. This sampling point did not meet any of the three wetland criteria for the USACE or RWQCB, nor is it a CDFW wetland or riparian habitat.
Sampling Point 1B
Sampling Point 1B was taken in non-native grassland in the central portion of the site, near to and upslope of Sampling Point 1A. Two upland species: ripgut grass and oats (Avena sp.), were the dominant species present, thus the hydrophytic vegetation criterion was not met. A soil pit excavated to 18 inches did not reveal the presence of hydric soil indicators, thus the hydric soil criterion was not met. No secondary or primary indicators of wetland hydrology were observed; thus, the wetland hydrology criterion was not met. This sampling point did not meet any of the three wetland criteria for the USACE or RWQCB, nor is it a CDFW wetland or riparian habitat.
Sampling Point 2
Sampling Point 2 was taken in non-native grassland in the southern portion of the site. One upland species: rattail fescue (Festuca myuros), was the dominant species present, thus the hydrophytic vegetation criterion was not met. A soil pit excavated to 8 inches did not reveal the presence of hydric soil indicators, thus the hydric soil criterion was not met. Deeper excavation was precluded by the presence of an underlying rock layer. No secondary or primary indicators of wetland hydrology were observed; thus, the wetland hydrology criterion was not met. This sampling point did not meet any of the three wetland criteria for the USACE or RWQCB, nor is it a CDFW wetland or riparian habitat.
HELIX
Environmental Planning
Memorandum (cont.)
HELIX Environmental Planning, Inc.
703 Palomar Airport Road
Suite 200
Carlsbad, CA 92011
760.517.9060 tel
619.462.0552 fax
www.helixepi.com
Sampling Point 3
Sampling Point 3 was taken in non-native grassland in the central portion of the site. One upland species (ripgut grass) and one wetland species (curly dock [Rumex crispus]) were the dominant species present, thus the hydrophytic vegetation criterion was not met as it failed both the dominance test and the prevalence index. While curly dock can occur in wetland habitat, it also is frequently observed in upland habitat, particularly in grassland. Curly dock is rated as a facultative (FAC) species, which has equal likelihood of occurring in an upland as it does in a wetland; it is not a strongly hydrophytic species. A soil pit excavated to 20 inches did not reveal the presence of hydric soil indicators, thus the hydric soil criterion was not met. No secondary or primary indicators of wetland hydrology were observed; thus, the wetland hydrology criterion was not met. This sampling point did not meet any of the three wetland criteria for the USACE or RWQCB, nor is it a CDFW wetland or riparian habitat.
In summary, all sampling points were determined to be upland, wetlands were not observed on the project site.
If you have any questions about the content of this memo, please call me at 760-517-9054 or 619-462- 1515.
Sincerely,
Stacy Nigro
Principal Biologist
Enclosures
Figure 1 Sampling Point Locations
Attachment A Sampling Point Photos
Attachment B Wetland Determination Data Forms
HELIX
Environmental Planning
Memorandum (cont.)
HELIX Environmental Planning, Inc.
703 Palomar Airport Road
Suite 200
Carlsbad, CA 92011
760.517.9060 tel
619.462.0552 fax
www.helixepi.com
References
Baldwin, B.G., D.H. Goldman, D.J. Keil, R. Patterson, T.J. Rosatti, and D.H. Wilken, editors. 2012. The Jepson Manual: Vascular Plants of California, second edition. University of California Press, Berkeley.
Environmental Laboratory. 1987. Corps of Engineers Wetlands Delineation Manual. Technical Report Y- 87-1. U.S. Army Engineer Waterways Experiment Station, Vicksburg, Mississippi. 100 pp. with Appendices.
Kollmorgen Instruments Corporation (Kollmorgen). 1994. Munsell Soil Color Charts, Revised edition.
Baltimore, MD.
Lichvar, R.W., D.L. Banks, W.N. Kirchner, and N.C. Melvin. 2016. The National Wetland Plant List: 2016 Wetland Ratings. Phytoneuron 2016-30: 1–17. Published 28 April. Retrieved from:
http://wetland_plants.usace.army.mil/
U.S. Army Corps of Engineers (USACE). 2008. Regional Supplement to the Corps of Engineers Wetland Delineation Manual: Arid West Region (Version 2.0). Eds. J.S. Wakely, R.W. Lichvar, and C.V.
Noble. ERDC/EL TR-08-28. Vicksburg, MS: U.S. Army Engineer Research and Development Center.
U.S. Department of Agriculture (USDA). 2020. Natural Resource Agency. Web Soil Survey. Retrieved from: http://websoilsurvey.sc.egov.usda.gov/app/WebSoilSurvey.aspx
1992. Field Office Official List of Hydric Soil Map Units for San Diego Area, California.
U.S. Fish and Wildlife Service. 2020. National Wetlands Inventory. April 23. Available at https://www.fws.gov/wetlands/data/mapper.html
.
HELIX
Environmental Planning
MiraLago Way
Rancheros Dr
Mira Lago Way
Mira Lago Way
Barham Dr
¯LMLM¯78
SP 1a
SP 2
SP 1b
SP 3
Figure 1
Sampling Point Locations
I:\PROJECTS\H\HMC\HMC-16_943Barham\Map\JurisMemo\Fig1_SamplingPoints.mxd HMC-16 5/26/2020 -DY Source: Aerial (SanGIS, 2017)
K
943 Barham Drive
0 150 Feet
Project Site
Sampling Point Locations
E---3 E---3
HELIX
Environmental Planning
Attachment A
Sampling Point Photos
G:\PROJECTS\H\HMC-ALL\HMC-16_Barham\_Reports\Juris Findings Memo\Att A Photos Representative Site Photos
A tt a c h m e n t A
HMC-16 Barham Drive
Photo 1. Looking north at Sampling Point (SP-) 1A taken April 24, 2020 in the central portion of the site. SP-1A is in a low area within non-native grassland; it did not meet USACE, RWQCB, or CDFW wetland criteria.
Photo 2. Looking north at SP-1B taken April 24, 2020 in the central portion of the site. SP-1B is near SP-1A but located slightly upslope and to the east. This SP is non-native grassland; it did not meet USACE, RWQCB, or CDFW wetland criteria.
HELIX
Environmental Planning
G:\PROJECTS\H\HMC-ALL\HMC-16_Barham\_Reports\Juris Findings Memo\Att A Photos Representative Site Photos
A tt a c h m e n t A
HMC-16 Barham Drive
Photo 3. Looking north at SP-2 taken April 24, 2020 in the southern portion of the site. SP-2 is located on a north-facing slope in non-native grassland. This SP did not meet USACE, RWQCB, or CDFW wetland criteria.
Photo 4. Looking north at SP-3 taken April 24, 2020 in the central portion of the site. SP-3 is in a low area of non-native grassland habitat; it did not meet USACE, RWQCB, or CDFW wetland criteria.
HELIX
Environmental Planning
Attachment B
Wetland Determination Data Forms
US Army Corps of Engineers Arid
Project/Site: City/County: Sampling Date:
Applicant/Owner: State: Sampling Point:
Investigator(s): Section, Township, Range:
Landform (hillslope, terrace, etc.): Local relief (concave, convex, none): Slope (%):
Subregion (LRR): Lat: Long: Datum:
Soil Map Unit Name: NWI classification:
Are climatic / hydrologic conditions on the site typical for this time of year? Yes No (If no, explain in Remarks.) Are Vegetation , Soil , or Hydrology No Are Vegetation , Soil , or Hydrology naturally problematic? (If needed, explain any answers in Remarks.) Hydrophytic Vegetation Present? Yes No
Hydric Soil Present? Yes No
Wetland Hydrology Present? Yes No
Is the Sampled Area
within a Wetland? Yes No
Remarks:
Dominance Test worksheet:
Number of Dominant Species
That Are OBL, FACW, or FAC: (A) Total Number of Dominant
Species Across All Strata: (B) Percent of Dominant Species
That Are OBL, FACW, or FAC:
(A/B)
Prevalence Index worksheet:
Total % Cover of: Multiply by:
OBL species x 1 =
FACW species x 2 =
FAC species x 3 =
FACU species x 4 =
UPL species x 5 =
Column Totals: (A) (B) Prevalence Index = B/A =
Hydrophytic Vegetation Indicators:
Dominance Test is >50%
Prevalence Index is 3.0
1 Morphological Adaptations1 (Provide supporting
data in Remarks or on a separate sheet)
Problematic Hydrophytic Vegetation1 (Explain)
1 Indicators of hydric soil and wetland hydrology must
be present, unless disturbed or problematic.
Absolute Dominant Indicator
Tree Stratum (Plot size: ) % Cover Species? Status
1. 2.
3. 4.
= Total Cover
Sapling/Shrub Stratum (Plot size: )
1. 2.
3. 4.
5. = Total Cover
Herb Stratum (Plot size: )
1. 2.
3. 4.
5. 6.
7. 8.
= Total Cover
Woody Vine Stratum (Plot size: )
1. 2.
= Total Cover
% Bare Ground in Herb Stratum % Cover of Biotic Crust Hydrophytic
Vegetation
Present? Yes No
Remarks:
943 E Barham Dr - JO# HMC-16 San Marcos/San Diego 4/24/2020 CA 1A
S. Nigro/J. Kurnow 18/12S/2W San Marcos quadrangle
low spot slightly concave 0
C 33.1358454684 -117.138713486 WGS 1984
VsC - Vista coarse sandy loam, 5-9% slopes none
r=25'
0 r=25'
0 r=8'
Bromus diandrus 70 X UPL
Avena sp. 20 UPL
Hordeum murinum 10 FACU
Carduus pycnocephalus 5 UPL
Anagallis arvensis 5 UPL
Rumex crispus 2 FAC
Brassica nigra 2 UPL
Lactuca serriola 1 FACU
115
r=25'
0 SP taken in low area in non-native grassland at bottom of 2 converging slopes, one of which has residential development on adjacent parcel, which could potentially contribute runoff to this area. In addition, the area received much higher than average rainfall in March and April. SP does not meet wetland criteria. 0 0
0 1
0 0 0
0 0
62 4411
510102
115 560
4.9 Upland vegetation is dominant. Sampling point taken here because it was a low area (landscape position suitable for wetland) supporting a few Rumex crispus (a FAC species). Area is dominated by upland vegetation (= non-native [annual] grassland) and does not support a dominance of hydrophytic vegetation.
WETLAND DETERMINATION DATA FORM -Arid West Region
✓
__ significantly disturbed? Are "Normal Circumstances" present? Yes_:{__ SUMMARY OF FINDINGS - Attach site map showing sampling point locations, transects, important features, etc. -- -✓-
--
_✓_
✓
-- -✓-
VEGETATION - Use scientific names of plants.
s
_✓_
West - Version 2.0
US Army Corps of Engineers Arid
SOIL Sampling Point:
Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.) Depth Matrix Redox Features
(inches) Color (moist) % Color (moist) % Type 1 Loc
2 Texture Remarks
1 Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains. 2 Location: PL=Pore Lining, M=Matrix.
Hydric Soil Indicators: (Applicable to all LRRs, unless otherwise noted.) Indicators for Problematic Hydric Soils 3 :
Histosol (A1) Sandy Redox (S5) 1 cm Muck (A9) (LRR C) Histic Epipedon (A2) Stripped Matrix (S6) 2 cm Muck (A10) (LRR B) Black Histic (A3) Loamy Mucky Mineral (F1) Reduced Vertic (F18) Hydrogen Sulfide (A4) Loamy Gleyed Matrix (F2) Red Parent Material (TF2) Stratified Layers (A5) (LRR C) Depleted Matrix (F3) Other (Explain in Remarks) 1 cm Muck (A9) (LRR D) Redox Dark Surface (F6)
Depleted Below Dark Surface (A11) Depleted Dark Surface (F7) Thick Dark Surface (A12) Redox Depressions (F8) 3Indicators of hydrophytic vegetation and Sandy Mucky Mineral (S1) Vernal Pools (F9) wetland hydrology must be present, Sandy Gleyed Matrix (S4) unless disturbed or problematic.
Restrictive Layer (if present):
Type:
Depth (inches): Hydric Soil Present? Yes No Remarks:
HYDROLOGY
Wetland Hydrology Indicators:
Primary Indicators (minimum of one required; check all that apply) Secondary Indicators (2 or more required) Surface Water (A1) Salt Crust (B11) Water Marks (B1) (Riverine) High Water Table (A2) Biotic Crust (B12) Sediment Deposits (B2) (Riverine) Saturation (A3) Aquatic Invertebrates (B13) Drift Deposits (B3) (Riverine) Water Marks (B1) (Nonriverine) Hydrogen Sulfide Odor (C1) Drainage Patterns (B10) Sediment Deposits (B2) (Nonriverine) Oxidized Rhizospheres along Living Roots (C3) Dry-Season Water Table (C2) Drift Deposits (B3) (Nonriverine) Presence of Reduced Iron (C4) Crayfish Burrows (C8) Surface Soil Cracks (B6) Recent Iron Reduction in Tilled Soils (C6) Saturation Visible on Aerial Imagery (C9) Inundation Visible on Aerial Imagery (B7) Thin Muck Surface (C7) Shallow Aquitard (D3) Water-Stained Leaves (B9) Other (Explain in Remarks) FAC-Neutral Test (D5) Field Observations:
Surface Water Present? Yes No Depth (inches):
Water Table Present? Yes No Depth (inches):
Saturation Present? Yes No Depth (inches):
(includes capillary fringe)
Wetland Hydrology Present? Yes No
Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available:
Remarks:
1A
0-5 10YR 2 /2 100 - - - - cla y loam moist
5-19 10YR 3 /3 100 - - - - cla y loam moist + saturated in lower part No hydric soil indicators present.
Observed pillbugs and earthworms in excavated soil, and pocket gopher mound 5' from pit.
Photos 1-7
18 14
No primary or secondary hydrology indicators observed. Soil moist with saturation at 14" and water table at 18" during the growing season during a normal rainfall year, but with much higher than average rainfall in the weeks leading up to the site visit (i.e., in March [5.7" while 2.5" is normal] and April [6.8" while 1.0" is normal]).
Saturation and water table observations did not satisfy the hydrology indicators as they were deeper than 12" from the surface in the growing season. Saturation and water table observed below 12" likely related to high rainfall in March and April, and location of the pit in the lowest area near convergence of two slopes.
FAC-Neutral test: W:U=0:1 (negative).
✓
_:f_
--------- ---- ----
✓
_✓_
_✓ _
West - Version 2.0
US Army Corps of Engineers
Project/Site: City/County: Sampling Date:
Applicant/Owner: State: Sampling Point:
Investigator(s): Section, Township, Range:
Landform (hillslope, terrace, etc.): Local relief (concave, convex, none): Slope (%):
Subregion (LRR): Lat: Long: Datum:
Soil Map Unit Name: NWI classification:
Are climatic / hydrologic conditions on the site typical for this time of year? Yes No (If no, explain in Remarks.) Are Vegetation , Soil , or Hydrology No Are Vegetation , Soil , or Hydrology naturally problematic? (If needed, explain any answers in Remarks.) Hydrophytic Vegetation Present? Yes No
Hydric Soil Present? Yes No
Wetland Hydrology Present? Yes No
Is the Sampled Area
within a Wetland? Yes No Remarks:
Dominance Test worksheet:
Number of Dominant Species
That Are OBL, FACW, or FAC: (A)
Total Number of Dominant
Species Across All Strata: (B)
Percent of Dominant Species
That Are OBL, FACW, or FAC: (A/B)
Prevalence Index worksheet:
Total % Cover of: Multiply by:
OBL species x 1 =
FACW species x 2 =
FAC species x 3 =
FACU species x 4 =
UPL species x 5 =
Column Totals: (A) (B) Prevalence Index = B/A =
Hydrophytic Vegetation Indicators:
Dominance Test is >50%
Prevalence Index is 3.0
1 Morphological Adaptations1 (Provide supporting
data in Remarks or on a separate sheet)
Problematic Hydrophytic Vegetation1 (Explain)
1 Indicators of hydric soil and wetland hydrology must
be present, unless disturbed or problematic.
Absolute Dominant Indicator
Tree Stratum (Plot size: ) % Cover Species? Status
1. 2.
3. 4.
= Total Cover
Sapling/Shrub Stratum (Plot size: )
1. 2.
3. 4.
5. = Total Cover
Herb Stratum (Plot size: )
1. 2.
3. 4.
5. 6.
7. 8.
= Total Cover
Woody Vine Stratum (Plot size: )
1. 2.
= Total Cover
% Bare Ground in Herb Stratum % Cover of Biotic Crust Hydrophytic
Vegetation
Present? Yes No
Remarks:
943 E Barham Dr - JO# HMC-16 San Marcos/San Diego 4/24/2020 CA 1B
S. Nigro/J. Kurnow 18/12S/2W San Marcos quadrangle
just upslope of SP-1A none 0
C 33.1358544372 -117.138672397 WGS 1984
VsC - Vista coarse sandy loam, 5-9% slopes none
r=25'
0 r=25'
0 r=8'
Bromus diandrus 80 X UPL
Avena sp. 25 X UPL
Anagallis arvensis 5 UPL
Carduus pycnocephalus 3 UPL
Lactuca serriola 1 FACU
Amsinckia intermedia 1 UPL
115
r=25'
0 SP taken approximately 15' from SP-1A, in a slightly higher landscape position. The area received much higher than average rainfall in March and April. SP does not meet wetland criteria. 0 0
0 2
0 0 0
0 0
00 41
570114
115 574
5.0 Area is dominated by upland vegetation (= non-native [annual] grassland).
WETLAND DETERMINATION DATA FORM -Arid West Region
✓
__ significantly disturbed? Are "Normal Circumstances" present? Yes_:{__ SUMMARY OF FINDINGS - Attach site map showing sampling point locations, transects, important features, etc. -- -✓-
--
_✓_
✓
-- -✓-
VEGETATION - Use scientific names of plants.
s
_✓_
Arid West - Version 2.0
US Army Corps of Engineers
SOIL Sampling Point:
Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.) Depth Matrix Redox Features (inches) Color (moist) % Color (moist) % Type 1 Loc
2 Texture Remarks
1 Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains. 2 Location: PL=Pore Lining, M=Matrix.
Hydric Soil Indicators: (Applicable to all LRRs, unless otherwise noted.) Indicators for Problematic Hydric Soils 3 :
Histosol (A1) Sandy Redox (S5) 1 cm Muck (A9) (LRR C) Histic Epipedon (A2) Stripped Matrix (S6) 2 cm Muck (A10) (LRR B) Black Histic (A3) Loamy Mucky Mineral (F1) Reduced Vertic (F18) Hydrogen Sulfide (A4) Loamy Gleyed Matrix (F2) Red Parent Material (TF2) Stratified Layers (A5) (LRR C) Depleted Matrix (F3) Other (Explain in Remarks) 1 cm Muck (A9) (LRR D) Redox Dark Surface (F6)
Depleted Below Dark Surface (A11) Depleted Dark Surface (F7) Thick Dark Surface (A12) Redox Depressions (F8) 3Indicators of hydrophytic vegetation and Sandy Mucky Mineral (S1) Vernal Pools (F9) wetland hydrology must be present, Sandy Gleyed Matrix (S4) unless disturbed or problematic.
Restrictive Layer (if present):
Type:
Depth (inches):
Hydric Soil Present? Yes No
Remarks:
HYDROLOGY
Wetland Hydrology Indicators:
Primary Indicators (minimum of one required; check all that apply) Secondary Indicators (2 or more required) Surface Water (A1) Salt Crust (B11) Water Marks (B1) (Riverine) High Water Table (A2) Biotic Crust (B12) Sediment Deposits (B2) (Riverine) Saturation (A3) Aquatic Invertebrates (B13) Drift Deposits (B3) (Riverine) Water Marks (B1) (Nonriverine) Hydrogen Sulfide Odor (C1) Drainage Patterns (B10) Sediment Deposits (B2) (Nonriverine) Oxidized Rhizospheres along Living Roots (C3) Dry-Season Water Table (C2) Drift Deposits (B3) (Nonriverine) Presence of Reduced Iron (C4) Crayfish Burrows (C8) Surface Soil Cracks (B6) Recent Iron Reduction in Tilled Soils (C6) Saturation Visible on Aerial Imagery (C9) Inundation Visible on Aerial Imagery (B7) Thin Muck Surface (C7) Shallow Aquitard (D3) Water-Stained Leaves (B9) Other (Explain in Remarks) FAC-Neutral Test (D5) Field Observations:
Surface Water Present? Yes
No Depth (inches):
Water Table Present? Yes No Depth (inches):
Saturation Present? Yes No Depth (inches):
(includes capillary fringe)
Wetland Hydrology Present? Yes
No
Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available:
Remarks:
1B
0-18 10YR 3 /2 100 - - - - cla y loam moist
No hydric soil indicators present. Soil moisture likely due to much higher than average rainfall in March and April, and landscape position near the bottom of two converging slopes. Pocket gopher mounds near pit.
Photos 12-14
No primary or secondary hydrology indicators observed.
FAC-Neutral test: W:U=0:2 (negative).
--------- ---- ----
✓
✓
✓
_✓_
_✓_
Arid West - Version 2.0
US Army Corps of Engineers
Project/Site: City/County: Sampling Date:
Applicant/Owner: State: Sampling Point:
Investigator(s): Section, Township, Range:
Landform (hillslope, terrace, etc.): Local relief (concave, convex, none): Slope (%):
Subregion (LRR): Lat: Long: Datum:
Soil Map Unit Name: NWI classification:
Are climatic / hydrologic conditions on the site typical for this time of year? Yes No (If no, explain in Remarks.) Are Vegetation , Soil , or Hydrology No Are Vegetation , Soil , or Hydrology naturally problematic? (If needed, explain any answers in Remarks.) Hydrophytic Vegetation Present? Yes No
Hydric Soil Present? Yes No
Wetland Hydrology Present? Yes No
Is the Sampled Area
within a Wetland? Yes No Remarks:
Dominance Test worksheet:
Number of Dominant Species
That Are OBL, FACW, or FAC: (A)
Total Number of Dominant
Species Across All Strata: (B)
Percent of Dominant Species
That Are OBL, FACW, or FAC: (A/B)
Prevalence Index worksheet:
Total % Cover of: Multiply by:
OBL species x 1 =
FACW species x 2 =
FAC species x 3 =
FACU species x 4 =
UPL species x 5 =
Column Totals: (A) (B) Prevalence Index = B/A =
Hydrophytic Vegetation Indicators:
Dominance Test is >50%
Prevalence Index is 3.0
1 Morphological Adaptations1 (Provide supporting
data in Remarks or on a separate sheet)
Problematic Hydrophytic Vegetation1 (Explain)
1 Indicators of hydric soil and wetland hydrology must
be present, unless disturbed or problematic.
Absolute Dominant Indicator
Tree Stratum (Plot size: ) % Cover Species? Status
1. 2.
3. 4.
= Total Cover
Sapling/Shrub Stratum (Plot size: )
1. 2.
3. 4.
5. = Total Cover
Herb Stratum (Plot size: )
1. 2.
3. 4.
5. 6.
7. 8.
= Total Cover
Woody Vine Stratum (Plot size: )
1. 2.
= Total Cover
% Bare Ground in Herb Stratum % Cover of Biotic Crust Hydrophytic
Vegetation
Present? Yes No
Remarks:
943 E Barham Dr - JO# HMC-16 San Marcos/San Diego 4/24/2020 CA 2
S. Nigro/J. Kurnow 18/12S/2W San Marcos quadrangle
hillslope none 30
C 33.1350461393 -117.13854567 WGS 1984
VsE2 - Vista coarse sandy loam, 15-30% slopes, eroded none r=25'
0 r=25'
0 10' X 4'
Festuca myuros 45 X FACU
Bromus hordeaceus 15 FACU
Logfia gallica 10 UPL
Deinandra fasciculata (seedlings) 5 UPL
Erodium sp. 5 UPL
Anagallis arvensis 2 UPL
Juncus bufonius 1 FACW
Silene gallica + unk herb* (see remarks) 2 + 2 UPL + ? 87 r=25'
0 SP taken on non-native grassland slope with underlying rock restrictive layer. The area received much higher than average rainfall in March and April. SP does not meet wetland criteria. 5 0
0 1
0 0 0
1 2
00 24060
12024
85 362
4.3 Upland vegetation is dominant.
*Unknown herb was not flowering or fruiting. Possibly a species in Boraginaceae, e.g. Amsinckia intermedia or Cryptantha sp.
WETLAND DETERMINATION DATA FORM -Arid West Region
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__ significantly disturbed? Are "Normal Circumstances" present? Yes_:{__ SUMMARY OF FINDINGS - Attach site map showing sampling point locations, transects, important features, etc. -- -✓-
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VEGETATION - Use scientific names of plants.
s
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Arid West - Version 2.0
US Army Corps of Engineers
SOIL Sampling Point:
Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.) Depth Matrix Redox Features (inches) Color (moist) % Color (moist) % Type 1 Loc
2 Texture Remarks
1 Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains. 2 Location: PL=Pore Lining, M=Matrix.
Hydric Soil Indicators: (Applicable to all LRRs, unless otherwise noted.) Indicators for Problematic Hydric Soils 3 :
Histosol (A1) Sandy Redox (S5) 1 cm Muck (A9) (LRR C) Histic Epipedon (A2) Stripped Matrix (S6) 2 cm Muck (A10) (LRR B) Black Histic (A3) Loamy Mucky Mineral (F1) Reduced Vertic (F18) Hydrogen Sulfide (A4) Loamy Gleyed Matrix (F2) Red Parent Material (TF2) Stratified Layers (A5) (LRR C) Depleted Matrix (F3) Other (Explain in Remarks) 1 cm Muck (A9) (LRR D) Redox Dark Surface (F6)
Depleted Below Dark Surface (A11) Depleted Dark Surface (F7) Thick Dark Surface (A12) Redox Depressions (F8) 3Indicators of hydrophytic vegetation and Sandy Mucky Mineral (S1) Vernal Pools (F9) wetland hydrology must be present, Sandy Gleyed Matrix (S4) unless disturbed or problematic.
Restrictive Layer (if present):
Type:
Depth (inches):
Hydric Soil Present? Yes No
Remarks:
HYDROLOGY
Wetland Hydrology Indicators:
Primary Indicators (minimum of one required; check all that apply) Secondary Indicators (2 or more required) Surface Water (A1) Salt Crust (B11) Water Marks (B1) (Riverine) High Water Table (A2) Biotic Crust (B12) Sediment Deposits (B2) (Riverine) Saturation (A3) Aquatic Invertebrates (B13) Drift Deposits (B3) (Riverine) Water Marks (B1) (Nonriverine) Hydrogen Sulfide Odor (C1) Drainage Patterns (B10) Sediment Deposits (B2) (Nonriverine) Oxidized Rhizospheres along Living Roots (C3) Dry-Season Water Table (C2) Drift Deposits (B3) (Nonriverine) Presence of Reduced Iron (C4) Crayfish Burrows (C8) Surface Soil Cracks (B6) Recent Iron Reduction in Tilled Soils (C6) Saturation Visible on Aerial Imagery (C9) Inundation Visible on Aerial Imagery (B7) Thin Muck Surface (C7) Shallow Aquitard (D3) Water-Stained Leaves (B9) Other (Explain in Remarks) FAC-Neutral Test (D5) Field Observations:
Surface Water Present? Yes
No Depth (inches):
Water Table Present? Yes No Depth (inches):
Saturation Present? Yes No Depth (inches):
(includes capillary fringe)
Wetland Hydrology Present? Yes
No
Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available:
Remarks:
2 0-8 10YR 3 /2 60 - - - - loam soil com pletely dry
0-8 10YR 3 /3 40 - - - - loam soil com pletely dry
rock layer
8 No hydric soil indicators present. Soil pit depth limited by underlying rock layer.
Photos 8-11
No primary or secondary hydrology indicators observed. Soil completely dry despite much higher than average rainfall in the weeks leading up to the site visit (i.e., in March [5.7" while 2.5" is normal] and April [6.8" while 1.0" is normal]).
FAC-Neutral test: W:U=0:1(negative).
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Arid West - Version 2.0
US Army Corps of Engineers
Project/Site: City/County: Sampling Date:
Applicant/Owner: State: Sampling Point:
Investigator(s): Section, Township, Range:
Landform (hillslope, terrace, etc.): Local relief (concave, convex, none): Slope (%):
Subregion (LRR): Lat: Long: Datum:
Soil Map Unit Name: NWI classification:
Are climatic / hydrologic conditions on the site typical for this time of year? Yes No (If no, explain in Remarks.) Are Vegetation , Soil , or Hydrology No Are Vegetation , Soil , or Hydrology naturally problematic? (If needed, explain any answers in Remarks.) Hydrophytic Vegetation Present? Yes No
Hydric Soil Present? Yes No
Wetland Hydrology Present? Yes No
Is the Sampled Area
within a Wetland? Yes No Remarks:
Dominance Test worksheet:
Number of Dominant Species
That Are OBL, FACW, or FAC: (A)
Total Number of Dominant
Species Across All Strata: (B)
Percent of Dominant Species
That Are OBL, FACW, or FAC: (A/B)
Prevalence Index worksheet:
Total % Cover of: Multiply by:
OBL species x 1 =
FACW species x 2 =
FAC species x 3 =
FACU species x 4 =
UPL species x 5 =
Column Totals: (A) (B) Prevalence Index = B/A =
Hydrophytic Vegetation Indicators:
Dominance Test is >50%
Prevalence Index is 3.0
1 Morphological Adaptations1 (Provide supporting
data in Remarks or on a separate sheet)
Problematic Hydrophytic Vegetation1 (Explain)
1 Indicators of hydric soil and wetland hydrology must
be present, unless disturbed or problematic.
Absolute Dominant Indicator
Tree Stratum (Plot size: ) % Cover Species? Status
1. 2.
3. 4.
= Total Cover
Sapling/Shrub Stratum (Plot size: )
1. 2.
3. 4.
5. = Total Cover
Herb Stratum (Plot size: )
1. 2.
3. 4.
5. 6.
7. 8.
= Total Cover
Woody Vine Stratum (Plot size: )
1. 2.
= Total Cover
% Bare Ground in Herb Stratum % Cover of Biotic Crust Hydrophytic
Vegetation
Present? Yes No
Remarks:
943 E Barham Dr - JO# HMC-16 San Marcos/San Diego 4/24/2020 CA 3
S. Nigro/J. Kurnow 18/12S/2W San Marcos quadrangle
low spot none 0
C 33.1364633452 -117.139165351 WGS 1984
VsC - Vista coarse sandy loam, 5-9% slopes none
r=25'
0 r=25'
0 r=8'
Bromus diandrus 40 X UPL
Rumex crispus 30 X FAC
Avena sp. 15 UPL
Anagallis arvensis 5 UPL
Erodium sp. 5 UPL
Lythrum hyssopifolium 3 OBL
Silene gallica + Cerastrium glomeratum 3+3 UPL
Lactuca serriola 3 FACU
107
r=25'
0 SP taken in low area in non-native grassland. The area received much higher than average rainfall in March and April. SP does not meet wetland criteria.
0 0
1 2
50 3 3
0 0
9030
123
35571
107 560
5.2 Upland vegetation is dominant. Sampling point taken here because it was a low area (landscape position suitable for wetland) supporting several Rumex crispus (a FAC species). Area is dominated by upland vegetation (= non-native [annual] grassland) and does not support a dominance of hydrophytic vegetation.
WETLAND DETERMINATION DATA FORM -Arid West Region
✓
__ significantly disturbed? Are "Normal Circumstances" present? Yes_:{__ SUMMARY OF FINDINGS - Attach site map showing sampling point locations, transects, important features, etc. -- -✓-
--
_✓_
✓
-- -✓-
VEGETATION - Use scientific names of plants.
s
_✓_
Arid West - Version 2.0
US Army Corps of Engineers
SOIL Sampling Point:
Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.) Depth Matrix Redox Features (inches) Color (moist) % Color (moist) % Type 1 Loc
2 Texture Remarks
1 Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains. 2 Location: PL=Pore Lining, M=Matrix.
Hydric Soil Indicators: (Applicable to all LRRs, unless otherwise noted.) Indicators for Problematic Hydric Soils 3 :
Histosol (A1) Sandy Redox (S5) 1 cm Muck (A9) (LRR C) Histic Epipedon (A2) Stripped Matrix (S6) 2 cm Muck (A10) (LRR B) Black Histic (A3) Loamy Mucky Mineral (F1) Reduced Vertic (F18) Hydrogen Sulfide (A4) Loamy Gleyed Matrix (F2) Red Parent Material (TF2) Stratified Layers (A5) (LRR C) Depleted Matrix (F3) Other (Explain in Remarks) 1 cm Muck (A9) (LRR D) Redox Dark Surface (F6)
Depleted Below Dark Surface (A11) Depleted Dark Surface (F7) Thick Dark Surface (A12) Redox Depressions (F8) 3Indicators of hydrophytic vegetation and Sandy Mucky Mineral (S1) Vernal Pools (F9) wetland hydrology must be present, Sandy Gleyed Matrix (S4) unless disturbed or problematic.
Restrictive Layer (if present):
Type:
Depth (inches):
Hydric Soil Present? Yes No
Remarks:
HYDROLOGY
Wetland Hydrology Indicators:
Primary Indicators (minimum of one required; check all that apply) Secondary Indicators (2 or more required) Surface Water (A1) Salt Crust (B11) Water Marks (B1) (Riverine) High Water Table (A2) Biotic Crust (B12) Sediment Deposits (B2) (Riverine) Saturation (A3) Aquatic Invertebrates (B13) Drift Deposits (B3) (Riverine) Water Marks (B1) (Nonriverine) Hydrogen Sulfide Odor (C1) Drainage Patterns (B10) Sediment Deposits (B2) (Nonriverine) Oxidized Rhizospheres along Living Roots (C3) Dry-Season Water Table (C2) Drift Deposits (B3) (Nonriverine) Presence of Reduced Iron (C4) Crayfish Burrows (C8) Surface Soil Cracks (B6) Recent Iron Reduction in Tilled Soils (C6) Saturation Visible on Aerial Imagery (C9) Inundation Visible on Aerial Imagery (B7) Thin Muck Surface (C7) Shallow Aquitard (D3) Water-Stained Leaves (B9) Other (Explain in Remarks) FAC-Neutral Test (D5) Field Observations:
Surface Water Present? Yes
No Depth (inches):
Water Table Present? Yes No Depth (inches):
Saturation Present? Yes No Depth (inches):
(includes capillary fringe)
Wetland Hydrology Present? Yes
No
Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available:
Remarks:
3 0-6 10YR 3 /2 100 - - - - cla y loam moist
6-20 10YR 3 /3 100 - - - - cla y loam moist
No hydric soil indicators present. Soil moisture likely due to low and flat landscape position combined with much higher than average rainfall in the weeks leading up to the site visit (i.e., in March [5.7" while 2.5" is normal] and April [6.8" while 1.0" is normal]).
Photos 18-22
16 No primary or secondary hydrology indicators observed. Saturation at 16" depth during the growing season in a higher than average rainfall period does not meet the A3 hydrology indicator, which requires saturation within 12 inches.
FAC-Neutral test: W:U=0:1 (negative).
_:f_
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Arid West - Version 2.0