Memorandum Date: January 22, 2015 To: The New Home Company From: Brianna Bernard, VCS Environmental Subject: Memorandum for Tree Survey at the Marywood Residential Development Site in Orange, CA. 1. Introduction VCS Environmental (VCS) is pleased to submit the following memorandum documenting the trees not included in the arborist report that would be impacted during construction of 40 single-family, detached residential homes on an approximately 16-acre Marywood Project site (Project). In support of Project efforts, VCS biologists conducted a tree inventory survey on January 15, 2015 within the Project site and grading area (Survey Area). 2. Project Location The Project site is located at 2811 East Villareal Drive in the City of Orange, County of Orange, California. The Project site is the current location of the Marywood Pastoral Center (Figure 1). The area surrounding the Project site includes a residential community to the north; a City water tank on a slope vegetated with ornamental species, Childtime preschool, and a residential community to the east; residential homes and two City water tanks on a slope vegetated with ornamental species to the west; and Villareal Drive and additional residential homes to the south. 3. Project Description The Project proposes to construct 40 residential homes on an approximately 16-acre Project site, including remediation of unengineered soil on the Project site and adjoining slopes. Figure 2 is a recent aerial of the Project site with the existing Marywood Pastoral Center, approximate Project grading limits, and Survey Area. Figure 3 is the proposed grading plan. In order to support the development of the Project, a large portion of the Study Area would need to be remediated due to settlement. The existing slope along the southern property boundary that extends down to the City’s two existing water tanks is a product of the original grading operation. Based on recent studies and as evidenced by the damage to the existing structures on the Project site, the prior fill material was not properly placed in that canyon and the Project site and slope above the City’s water tanks continues to settle. In its current state, that fill material, which will be referred to as unsuitable fill material, is not suitable for any type of new development and creates potential slope stability issues adjacent to the City’s two water tanks. Therefore, the existing unsuitable fill would be removed, the area would be over-excavated and reconstructed with structural fill compacted to meet the required geotechnical specifications.
This document is posted to help you gain knowledge. Please leave a comment to let me know what you think about it! Share it to your friends and learn new things together.
Transcript
Memorandum Date: January 22, 2015
To: The New Home Company
From: Brianna Bernard, VCS Environmental
Subject: Memorandum for Tree Survey at the Marywood Residential Development Site in Orange, CA.
1. IntroductionVCS Environmental (VCS) is pleased to submit the following memorandum documenting the trees not included in the arborist report that would be impacted during construction of 40 single-family, detached residential homes on an approximately 16-acre Marywood Project site (Project). In support of Project efforts, VCS biologists conducted a tree inventory survey on January 15, 2015 within the Project site and grading area (Survey Area).
2. Project LocationThe Project site is located at 2811 East Villareal Drive in the City of Orange, County of Orange, California. The Project site is the current location of the Marywood Pastoral Center (Figure 1). The area surrounding the Project site includes a residential community to the north; a City water tank on a slope vegetated with ornamental species, Childtime preschool, and a residential community to the east; residential homes and two City water tanks on a slope vegetated with ornamental species to the west; and Villareal Drive and additional residential homes to the south.
3. Project DescriptionThe Project proposes to construct 40 residential homes on an approximately 16-acre Project site, including remediation of unengineered soil on the Project site and adjoining slopes. Figure 2 is a recent aerial of the Project site with the existing Marywood Pastoral Center, approximate Project grading limits, and Survey Area. Figure 3 is the proposed grading plan.
In order to support the development of the Project, a large portion of the Study Area would need to be remediated due to settlement. The existing slope along the southern property boundary that extends down to the City’s two existing water tanks is a product of the original grading operation. Based on recent studies and as evidenced by the damage to the existing structures on the Project site, the prior fill material was not properly placed in that canyon and the Project site and slope above the City’s water tanks continues to settle. In its current state, that fill material, which will be referred to as unsuitable fill material, is not suitable for any type of new development and creates potential slope stability issues adjacent to the City’s two water tanks. Therefore, the existing unsuitable fill would be removed, the area would be over-excavated and reconstructed with structural fill compacted to meet the required geotechnical specifications.
January 22, 2015 Page 2 of 2
4. Field Survey Methods A Tree Evaluation Report was prepared by Arborgate Consulting, Inc. on October 9, 2015, that evaluated existing trees on the Marywood property. However, the arborist report did not evaluate the trees on the slopes surrounding the Marywood property within the Project site and proposed grading limits. Therefore, VCS biologists walked the manufactured slopes located within the Study Area. The Study Area was surveyed on foot by walking methodically across the property. Any inaccessible or restricted areas were surveyed using binoculars. The trees were evaluated for health and structural condition of the trunk and canopy. The trunk diameter was measured using diameter tape and multi trunk trees were measured at the base for simplicity. Trunk diameter was otherwise measured at a point 24 inches above ground level.
5. Results Table 1 lists the species of trees identified during the field survey. Please refer to Appendix A: Matrix of Finding for species of trees and their corresponding trunk diameter (DBH). The City of Orange currently implements a tree ordinance as Ordinance 12.32.110. Ordinance 23.32.020, defines “tree” as any “live plant which has a single trunk measuring 10.5 inches in circumference, measured at a point 24 inches above the ground level.” Approximately 228 trees were surveyed and inventoried within the Study Area along the manufactured slopes. Of the total 228 trees surveyed along the manufactured slopes, no native tree species were observed.
Table 1. Trees Observed On-site Common name Species Brazil pepper Schinus terbinthifolius camphor Cinnamomum camphora Chinese elm Ulmus parvifolia eucalyptus Eucalyptus sp. mulberry Morus alba pine Pinus sp. Peruvian peppertree Schinus molle
Of the 228 trees inventoried, approximately 76 met the definition of mature trees according to Ordinance 23.32.020. No trees within the Study Area met the definition of Historical Trees as outlined in Ordinance 12.32.060. All the trees would be removed as part of the Development due to the unengineered soil. Many of the trees on the slopes appear to have started as chance seedlings. Of the trees being removed, many of the species are in poor health due to lack of water, poor pruning, crowding, poor soil conditions, and pests or disease.
Attachments:
Figure 1: Project Location Figure 2: Project Site Figure 3: Proposed Site Grading Plan Attachment A: Matrix of Findings Attachment B: Photopages
FFiigguurreess
MarywoodRegional Location Map
Prepared By:I
1 inch = 20,000 feet0 10,000 20,0005,000
FeetMap Created: 01/16/2015
VCS Environmental
Bing MapsData Source:
FIGURE 1
_̂
Approximate Project Location
Marywood Residential DevelopmentProject Site
Prepared By:
I1 inch = 150 feet
0 15075Feet
Map Created: 1/16/2015
VCS Environmental
Bing MapsData Source:
FIGURE 2
LegendApproximate Site BoundaryApproximate Grading LimitsApproximate Survey Area
IN THE CITY OF ORANGE, COUNTY OF ORANGE, STATE OF CALIFORNIA, BEING A PORTION OFPARCEL 2 OF LOT LINE ADJUSTMENT LL78-4 RECORDED SEPTEMBER 21, 1978 AS INSTRUMENT NO.28569 IN BOOK 12851, PAGE 1570 OF OFFICIAL RECORDS, IN THE OFFICE OF THE COUNTYRECORDER OF SAID COUNTY.
I HEREBY STATE THAT THIS MAP WAS PREPARED UNDER MY SUPERVISION ANDTHAT THE OWNER OF RECORD HAS KNOWLEDGE OF AND CONSENTS TO THEFILING OF THIS MAP.
DATE: 00-00-2014
DOUGLAS L. STALEY
CUT: 373,880 CYSFILL: 367,630 CYS
1. EXISTING LAND USE (GENERAL PLAN): LOW DENSITY RESIDENTIAL (LDR)2. PROPOSED LAND USE: SINGLE-FAMILY RESIDENTIAL3. EXISTING ZONING: SINGLE FAMILY RESIDENTIAL (R1-6)4. PROPOSED ZONING: SINGLE FAMILY RESIDENTIAL (R1-6)5. PROPOSED DEVELOPMENT IS LOCATED WITHIN THE ORANGE UNIFIED
SCHOOL DISTRICT6. ALL PROPOSED UTILITIES ARE TO BE UNDERGROUND
UTILITIES SUMMARY:DOMESTIC WATER SERVICE - CITY OF ORANGESANITARY SEWER SERVICE - CITY OF ORANGENATURAL GAS SERVICE - SOUTHERN CALIFORNIA GAS COMPANYELECTRICAL SERVICE - SOUTHERN CALIFORNIA EDISON COMPANYTELEPHONE SERVICE - AT&TCABLE - INTERNET SERVICE - TIME WARNER CABLEWASTE REMOVAL SERVICE - CR&R INCORPORATEDFIRE - ORANGE CITY FIRE DEPARTMENTPOLICE - ORANGE POLICE DEPARTMENT
7. TOTAL GROSS AREA: 16.18 ACRES9. GRADED SLOPES SHALL BE 2:1 UNLESS OTHERWISE SHOWN.10. ALL EXISTING EASEMENTS ARE TO REMAIN IN THEIR CURRENT DESIGNATED
LOCATIONS UNLESS OTHERWISE NOTED.11. ASSESSOR PARCEL NUMBER: 361-064-0112. THOMAS GUIDE, ORANGE COUNTY (2006ED): PAGE 770, A5.
EXISTING EASEMENTS:TEMPORARY CONSTRUCTION EASEMENTPARCEL A (O.R. 2009000567669) - CITY OF ORANGE EASEMENT FOR WATER PURPOSES???SEWER EASEMENT ???
6"
1/2"R
6"
12"R
4"
CURB
FAC
E
1'-0"
6" 7"9"R 1/2"R
3/8"LIP
TCPER PLAN
1"
1. REDUCTION IN STANDARD CURB FROM 6" TO 4" ROLLED CURB (CITY STD. 117).
2. STREET SECTION - REDUCTION IN STANDARD STREET SECTION (CITY STD. 106) FROM 52' TO 50'PARKING BOTH SIDES.
(EXISTING)NTS
18'
50'
36'
5' SIDEWALK
5'
R/W
6" CURB
RELIGIOUS
6"1.5'
7'
R/W
6" CURB
RESIDENTIAL
6"
7'
18'FACILITY
A PORTION OF E. VILLAREAL DRIVE
TNHC Land Company, LLC85 Enterprise, Suite 450, Aliso Viejo, CA 92656Phone: 949-382-2792Fax: 949-382-7801
Common Name Scientific Number DBH Outside of Grading Limit136 camphor Cinnamomum camphora <10.5137 camphor Cinnamomum camphora >10.5138 camphor Cinnamomum camphora >10.5139 pine Pine sp. <10.5140 pine Pine sp. <10.5141 camphor Cinnamomum camphora <10.5142 pine Pine sp. >10.5143 pine Pine sp. >10.5144 Peruvian peppertree Schinus molle <10.5145 Peruvian peppertree Schinus molle <10.5 X146 Peruvian peppertree Schinus molle <10.5 X147 Peruvian peppertree Schinus molle <10.5 X148 Peruvian peppertree Schinus molle <10.5 X149 Peruvian peppertree Schinus molle <10.5 X150 Peruvian peppertree Schinus molle <10.5 X151 Peruvian peppertree Schinus molle <10.5 X152 Mulberry Morus alba >10.5 X153 Peruvian peppertree Schinus molle <10.5 X154 Peruvian peppertree Schinus molle <10.5 X155 Peruvian peppertree Schinus molle <10.5 X156 Peruvian peppertree Schinus molle <10.5 X157 Peruvian peppertree Schinus molle <10.5 X158 Peruvian peppertree Schinus molle <10.5 X159 Chinese Elm Ulmus parvifolia >10.5 X160 Peruvian peppertree Schinus molle <10.5161 Peruvian peppertree Schinus molle <10.5162 Brazil peppertree Schinus terbinthifolius <10.5163 Brazil peppertree Schinus terbinthifolius <10.5164 Peruvian peppertree Schinus molle <10.5165 Peruvian peppertree Schinus molle <10.5166 Peruvian peppertree Schinus molle >10.5167 Brazil peppertree Schinus terbinthifolius >10.5168 pine Pine sp. >10.5169 pine Pine sp. <10.5170 Brazil peppertree Schinus terbinthifolius <10.6171 Brazil peppertree Schinus terbinthifolius >10.5172 Peruvian peppertree Schinus molle <10.5 X173 Brazil peppertree Schinus terbinthifolius <10.5 X174 Peruvian peppertree Schinus molle <10.5 X175 Peruvian peppertree Schinus molle <10.5 X176 Peruvian peppertree Schinus molle >10.5 X177 Peruvian peppertree Schinus molle >10.5 X178 Peruvian peppertree Schinus molle >10.5 X179 Brazil peppertree Schinus terbinthifolius >10.5 X180 Peruvian peppertree Schinus molle <10.5 X
Appendix A: Matrix of Findings
Page 5 of 6
Common Name Scientific Number DBH Outside of Grading Limit181 Peruvian peppertree Schinus molle <10.5 X182 Peruvian peppertree Schinus molle >10.5 X183 Peruvian peppertree Schinus molle >10.5 X184 Peruvian peppertree Schinus molle >10.5 X185 Peruvian peppertree Schinus molle <10.5 X186 pine Pine sp. >10.5 X187 chinese elm Ulmus parvifolia <10.5 X188 chinese elm Ulmus parvifolia >10.5 X189 pine Pine sp. >10.5190 pine Pine sp. <10.5191 pine Pine sp. >10.5192 pine Pine sp. >10.5193 pine Pine sp. <10.5194 pine Pine sp. <10.5195 pine Pine sp. <10.5196 Brazil peppertree Schinus terbinthifolius <10.5197 Peruvian peppertree Schinus molle <10.5198 Peruvian peppertree Schinus molle >10.5199 Chinese elm Ulmus parvifolia >10.5200 Chinese elm Ulmus parvifolia >10.5201 pine Pine sp. <10.5202 Peruvian peppertree Schinus molle <10.5203 Peruvian peppertree Schinus molle <10.5204 pine Pine sp. >10.5205 Peruvian peppertree Schinus molle <10.5206 Brazil peppertree Schinus terbinthifolius <10.5207 Peruvian peppertree Schinus molle >10.5208 pine Pine sp. >10.5209 Peruvian peppertree Schinus molle <10.5210 camphor Cinnamomum camphora <10.5211 camphor Cinnamomum camphora <10.5212 camphor Cinnamomum camphora <10.5213 Peruvian peppertree Schinus molle <10.5 X214 Brazil peppertree Schinus terbinthifolius <10.5 X215 Peruvian peppertree Schinus molle <10.5 X216 Peruvian peppertree Schinus molle <10.5 X217 Peruvian peppertree Schinus molle >10.5 X218 Peruvian peppertree Schinus molle >10.5 X219 Peruvian peppertree Schinus molle >10.5 X220 Brazil peppertree Schinus terbinthifolius <10.5 X221 Brazil peppertree Schinus terbinthifolius <10.5 X222 Peruvian peppertree Schinus molle <10.5 X223 Peruvian peppertree Schinus molle <10.5 X224 pine Pine sp. <10.5 X225 pine Pine sp. >10.5 X
Appendix A: Matrix of Findings
Page 6 of 6
Common Name Scientific Number DBH Outside of Grading Limit226 pine Pine sp. >10.5 X227 Chinese Elm Ulmus parvifolia <10.5 X228 Chinese Elm Ulmus parvifolia >10.5 X
AAttttaacchhmmeenntt BB:: PPhhoottooppaaggeess
Tree Inventory Survey Conducted on January 15, 2015
Peruvian peppertree found on slope adjacent to the existing tennis courts.
Peruvian peppertree found on slope.
Marywood Residential Development Page 1
Tree Inventory Survey Conducted on January 15, 2015
Dead Chinese elm found on slope adjacent to the water tanks.
Pines found on adjacent to road leading to existing tennis courts.
Marywood Residential Development Page 2
Tree Inventory Survey Conducted on January 15, 2015
Young Peruvian peppertree located on the slope adjacent to the water tanks.
Many of the trees found on the manufactured slopes are in poor health due to lack of water, poor pruning, crowding, poor soil conditions, and pests or disease.