HomeMy WebLinkAboutTen Over Studio - 2932 Augusta Street, 02.01.2025- Arborist Report Certified Arborist Report
Prepared for:
Ten Over Studio, Inc.
Jared Desbrow
529 Marsh Street
San Luis Obispo, CA 93401
Prepared By:
ISA Certified Arborist
Robert Schreiber
170 Terra St
Morro Bay, CA 93442
805-772.5400
ISA Certified Arborist
#FL-0314A
February 1, 2025
Jared Desbrow
Ten Over Studio, Inc.
529 Marsh Street
San Luis Obispo, CA 9 3401
PROJECT LOCATION:
2932 Augusta Street
San Luis Obispo, CA 934 01
APN #04-981-008
PREPARED BY:
Robert Schreiber
170 Terra Street, Morro Bay, CA 93442
Telephone - 805.772.5400
E-mail – arborfirst@sbcglobal.net
Web Site - www.arborfirst.com
Introduction:
The property is located at 2932 Agusta Street in the city of San Luis Obispo, California.
The parcel is approximately .48 acres. The proposed project includes
improvement/replacement of an existing multi-family residence and construction of a
new auxiliary dwelling unit. The purpose of this report is to inventory trees that are in
proximity of proposed construction activities including those on site as well as on an
adjacent property located at 3000 Augusta Street.
Methodology:
The City of San Luis Obispo Department of Planning & Building has requested an
inventory of all trees that either will be eliminated or possibly impacted by construction
activities. These activities are delineated on Civil Site Plans to be submitted to the City.
Site visits were made on January 23rd and 29th, 2025. A complete inventory (including
tag numbering of trees) has been prepared and is attached below.
Tree Conditions Ratings:
We evaluated the trees conditions using a rating system. The ratings ranged from
Excellent to Dead, based on various factors such as branch structure, decay, structural
defects, crown fullness, leaf color and size, and twig dieback.
Excellent: Has a well-balanced branch structure, free of decay or significant structural
flaws, and a full crown with healthy leaf color and minimal twig dieback.
Good: Exhibits a balanced branch structure with minor decay and few structural
issues, along with a full crown displaying good leaf color and size, with minimal to
moderate twig dieback.
Fair: Shows a balanced to somewhat asymmetric branch structure with minor decay
and manageable structural flaws, requiring pruning, and a crown ranging from full to
moderately full, with average leaf color and size, and moderate twig dieback.
Poor: Displays an asymmetric branch structure with significant decay and structural
flaws, possibly including prior large branch failures that pruning may not fully address.
The crown is thinning, with moderate to severe twig dieback.
Very Poor: Demonstrates an asymmetric branch structure with substantial decay and
significant structural flaws, including prior large branch failures that pruning cannot
sufficiently address. The crown is thinning significantly, with severe twig dieback.
Dead: Shows no visible signs of life.
Tree Protection Requirements:
To ensure the safety and preservation of trees during construction, protective
measures must be implemented throughout the entire duration of construction
activities, including tree removal and site preparation that may take place before actual
building construction begins. Any changes in the project referenced in this report will
need Certified Arborist of Record review to ensure the report is still valid. Project
Manager shall be responsible for instructing workers about tree protection goals,
implementing protection of root zones, and installing and maintaining protective
fencing.
• Root Pruning - For trees extending into the Construction Restriction Zone (CRZ),
any roots measuring 1 inch or larger encountered during construction near
protected trees must be carefully cut leaving no cracks or frayed edges. The
excavated area should be immediately backfilled with moist soil.
• Tree Protection Fencing - Tree protection fencing must be erected and
maintained throughout the entirety of the construction project. The fencing should
be 4 feet in height and made of orange high-density polyethylene material,
featuring openings measuring 3.5 inches by 1.5 inches. Installation should entail
steel posts spaced 8 feet apart, ensuring the fencing is taut to prevent any sagging.
Weatherproof signs must be affixed permanently to the fences every 50 feet,
containing the following information:
Tree protection zone No personnel, equipment, materials, or vehicles are allowed
Do not remove or replace this fence. [Name and phone of Manager]
• Root Protection- Grading, soil disturbance, or paving within the designated Tree
Protection Zone (TPZ) of any tree is strictly forbidden. Storage of construction
materials, soils, or debris within this protected area is also prohibited. Furthermore,
the disposal of concrete, plaster, or paint washout within the TPZ is strictly
prohibited.
• Trenching within Dripline- Excavation within the drip line of native trees mandates
careful manual digging, auguring, or boring for utility or slab installations. Efforts
shall be made to avoid disturbing significant roots. Any exposed roots exceeding 1"
in diameter must be cleanly cut with sharp pruning tools to minimize damage. All
cuts shall be clean with no cracks or frayed edges. It is compulsory for the Certified
Arborist of Record and grading contractors to meet before commencing any work.
• Monitoring- A qualified Certified Arborist of Record must oversee specific activities,
as detailed in the spreadsheet provided. While continuous monitoring is not
required, observational checks during these tasks are necessary. It is the
responsibility of the property owner(s) or their representative to inform the Certified
Arborist of Record in advance of these events to arrange for them to be on site.
The property owner is tasked with hiring a licensed and insured Certified Arborist to
conduct and document all monitoring activities before the commencement of
construction. These activities include pre-construction fence placement, any utility
or drainage trenching within the drip line of trees, grading and trenching near trees
earmarked for monitoring, driveway construction, and tree removal operations.
• Pre-construction Meeting – An on-site meeting including the Certified Arborist of
Record, Owners, Planning Staff, and the earth-moving team must be held prior to
the start of any work. Before final occupancy, a letter from the Certified Arborist of
Record may be necessary, confirming the health of affected trees and
recommending any further mitigation. The letter must affirm the Certified Arborist of
Records presence during all trenching or grading within the drip line of selected
native trees and compliance with specified standards. It is the responsibility of the
owner(s) or their designee to inform the Certified Arborist of Record prior to these
events.
• Landscaping - Installation of turf or overhead watering systems within the drip-line
of the tree is strictly prohibited. Excessive irrigation in this zone can introduce root
decay fungus, which poses a significant risk to the tree's health.
Observations / Conclusions and Recommendations:
The site includes an existing multi-family structure, driveway and parking area.
Additionally, an ADU is to be added to the already existing site.
Hand excavation within any Critical Root Zone (CRZ) should be carefully conducted to
minimize root disturbance. Throughout construction, regular observational checks
should be implemented to monitor changes in any tree's condition and ensure the
effectiveness of protection measures such as root barriers and physical barriers.
Special attention should be given to activities near the trees, such as excavation and
grading, to prevent damage to critical roots. Additionally, structural integrity will be
monitored, and post-construction evaluations should be conducted to assess the trees’
health and any necessary follow-up actions.
Appendices: Tree Inventory, Tree Protection Requirements, Photographs
Location Picture
Number
Tree
#
Species Diameter
(DBH)
Condition Height /
Spread
Comments
On Site A 201 California Pepper
{Schinus molle}
5.4” Poor 10’ / 15’ Remove
At 3000
Augusta
Street
B 202 Swamp Mahogony
Eucalyptus
{Eucalyptus robusta}
15.9” Good 35’ / 15’ Retain
On Site C 203 Italian Cypress
{Cupressus
sempervirens}
10.2” Good
30’ / 6’ Remove
On Site D 204 Lemon Eucalyptus
{Corymbia citriodora}
27.7” Good 65’ / 30’ Remove
On Site D 205 Italian Cypress
{Cupressus
sempervirens}
10.2”
Good 30’ / 6’
Remove
On Site D 206
Italian Cypress
{Cupressus
sempervirens}
10.2” Good
30’ / 6’ Remove
On Site E 207 Lemon Eucalyptus
{Corymbia citriodora}
11.8” Good
60’ / 10’ Remove
On Site E 208 Lemon Eucalyptus
{Corymbia citriodora}
32.8” Good
65’ / 30’ Remove
On Site E 209 Italian Cypress
{Cupressus
sempervirens}
10.2” Poor
15’ / 5’ Remove
On Site E 210
Monterey Pine
{Pinus radiata}
13.1” Fair
60’ / 35’ Remove
On Site F 211 Lemon Eucalyptus
{Corymbia citriodora}
14.3” Poor 65’ / 30’ Remove
On Site F 212 Italian Cypress
{Cupressus
sempervirens}
10.2” Good
30’ / 6’ Remove
On Site F 213 Yucca
{Yucca gigantea}
8.0” Very Poor 25’ / 5’ Remove
At 3000
Augusta
Street
G 214 Sycamore
{Platanus occidentalis}
12.4” Good 30’ / 10’ Retain
At 3000
Augusta
Street
G & H 215 Podocarpus
{Podocarpus
macrophyllus}
6.7” Good 30’ / 15’ Retain
At 3000
Augusta
Street
G & H 216 Podocarpus
{Podocarpus
macrophyllus}
12.4” Good 30’ / 15’ Retain
At 3000
Augusta
Street
G & H 217 Italian Stone Pine
{Pinus pinea}
5.1” Fair 30’ / 5’ Retain
At 3000
Augusta
Street
G & H 218 Podocarpus
{Podocarpus
macrophyllus}
5.4” Good 30’ / 10’ Retain
At 3000
Augusta
Street
G & H 219 Podocarpus
{Podocarpus
macrophyllus}
8.0” Good
30’ / 10’ Retain
At 3000
Augusta
Street
G & H 220 Podocarpus
{Podocarpus
macrophyllus}
5.7” Good 30’ / 10’ Retain
At 3000
Augusta
Street
G & H 221 Podocarpus
{Podocarpus
macrophyllus}
6.7” Good 22’ / 10’ Retain
At 3000
Augusta
Street
G & H 222 Podocarpus
{Podocarpus
macrophyllus}
8.3” Good 22’ / 10’ Retain
At 3000
Augusta
Street
223 Podocarpus
{Podocarpus
macrophyllus}
5.1” Good 22’ / 10’ Retain
At 3000
Augusta
Street
224 Italian Cypress
{Cupressus
sempervirens}
7.6” Fair 20’ / 6’ Remove
At 3000
Augusta
Street
I, J, K 225 Podocarpus
{Podocarpus
macrophyllus}
4.8” Good 25’ / 10’ Retain
At 3000
Augusta
Street
I, J, K 226 Podocarpus
{Podocarpus
macrophyllus}
15.6” Good 25’ / 10’ Retain
At 3000
Augusta
Street
I, J, K 227 Italian Cypress
{Cupressus
sempervirens}
8.6” Good 25’ / 10’ Retain
At 3000
Augusta
Street
I, J, K 228 Italian Cypress
{Cupressus
sempervirens}
6.4” Good 25’ / 6’ Retain
At 3000
Augusta
Street
I, J, K 229 Italian Cypress
{Cupressus
sempervirens}
6.7” Good 25’ / 6 ‘ Retain
At 3000
Augusta
Street
I, J, K 230 Italian Cypress
{Cupressus
sempervirens}
5.7” Good 25’ / 6’ Retain
At 3000
Augusta
Street
I, J, K 231 Italian Cypress
{Cupressus
sempervirens}
5.7” Good 25’ / 6’ Retain
At 3000
Augusta
Street
I, J, K 232 Italian Cypress
{Cupressus
sempervirens}
6.7” Good 25’ / 6’ Retain
At 3000
Augusta
Street
I, J, K 233 Italian Cypress
{Cupressus
sempervirens}
6.4” Good 25’ / 6’ Retain
At 3000
Augusta
Street
I, J, K 234 Italian Cypress
{Cupressus
sempervirens}
8.3” Good 25’ / 6’ Retain
At 3000
Augusta
Street
235 Hollyleaf Cherry
{Prunus ilicifolia}
10.3” Good 10’ / 15’ Remove
On Site L 236 Coast Live Oak
{Quercus agrifolia}
15.3” Good 20’ / 20’ Remove
On Site M 237 Coast Live Oak
{Quercus agrifolia}
6.0” Good 22’ / 15’ Remove
On Site M 238 Coast Live Oak
{Quercus agrifolia}
6.0” Good 22’ / 15’ Remove
On Site N 239 Carob
{Ceratonia siliqua}
22.9” Fair 22’ / 30’ Remove
On Site N & O 240 Carob
{Ceratonia siliqua}
17.8” Fair 25’ / 30’ Remove
On Site N & O 241 Carob
{Ceratonia siliqua}
20.4” Fair 25’ / 30’ Remove
On Site Q, R, S 242 Carob
{Ceratonia siliqua}
16.2” Fair 20’ / 15’ Remove
On Site Q, R, S 243 California Pepper
{Schinus molle}
28.3” Fair 30’ / 25’ Remove
On Site Q, R, S 244 Carob
{Ceratonia siliqua}
28.6” Fair 30’ / 30’ Remove
On Site Q, R, S 245 Carob
{Ceratonia siliqua}
12.7” Fair 35’ / 30 Remove
Appendix A- Tree Inventory
On Site Q, R, S 246 Carob
{Ceratonia siliqua}
24.8” Fair 35’ / 15’ Remove
On Site Q, R, S 247 Carob
{Ceratonia siliqua}
22.9” Fair 35’ / 40’ Remove
On Site Q, R, S 248 California Pepper
{Schinus molle}
10.2” Fair 35’ / 30’ Remove
On Site Q, R, S 249 California Pepper
{Schinus molle}
8.7” Fair 35’ / 30’ Remove
On Site P 250 Chinese Banyan
{Ficus macrocarpa}
9.2” Good 20’ / 18’ Remove
Appendix B – Tree Protection Requirements
Appendix C - Photographs
Picture A
Picture B
Picture C
Picture D
Picture E
Picture F
Picture G
Picture H
Picture I
Picture J
Picture K
Picture L
Picture M
Picture N
Picture O
Picture P
Picture Q
Picture R
Picture S