HomeMy WebLinkAboutRCC AGENDA PK 1994/02/07Mitigated Negative Declaratio
PROJECT NAME: Bonita Hills Executive Estates
PROJECT LOCATION: North of the Terminus of Moonview Drive
ASSESSOR'S PARCEL NO.: APN: 592-030-58
PROJECT APPLICANT: Michael Anthony Demich
CASE NO: IS-91-15 DATE: July 28, 1993
A. ProLt Settine
The proposed project consists of the annexation and prezoning of 8.52 acres currently located
in the County of San Diego to the City of Chula Vista and subdivision of the site into
residential lots. The site consists primarily of a rectangular tract of land abutting the Bonita
Valley Reservoir on the west, north of the terminus of Moonview Drive. Although the site
was farmed many years ago, a variety of vegetation is on the site. The southern end of the
property features anorth-facing slopes with disturbed vegetation which gradually drops into
a drainage with sage scrub. The terrain rises again to the north onto a barren ridgeline,
before dropping steeply into Bonita Valley. On the eastern boundary near the center of the
site is a disturbed fill slope abutting a buried reservoir. The 18.7 million gallon reinforced
concrete Bonita Valley Reservoir to the east includes a two foot earthen "blanket" over the
concrete, on which sage scrub was seeded. The high elevation is 308 feet at the south end
of the property, on a hillside below the existing water tank while the low elevation is
approximately 116 feet in the extreme northwestern corner of the property on a steep slope
overlooking Bonita Valley.
B. Proiect Description ,
The proposed project is~ an annexation to the City of Chula Vista and prezoning of
approximately eight acres and subdivision of the site into thirteen lots. Twelve of the lots
will be for development of custom homes, two of the lots will be dedicated open space for
protection of sensitive environmental resources. Site access will be via Moonview Drive
which will be gated at the entrance to the site.
The site is bounded by existing single family residences at the northeastern and southwestern
corners, water storage facilities at the eastern and southern portions, a partially improved
road at the northwest boundaries, Moon View Drive at the southeastern corner, and
undeveloped land at the remaining boundaries.
The property to the north, east and west is in the County of San Diego and designated
Residential-Low (0-3 du/ac), Residential 1 and Residential 5, respectively, on the Sweetwater
Community Plan. The property to the south (Terra Nova) is in the City of Chula Vista and
is designated Residential-Low Medium (3-6 du/ac) on the City's General Plan. Zoning for
~t~r,
_....:
city of china vista planning department Cm OF
environmental review section CHULA VISTA
the property to the north, east and west is RR-1 (to the north and east) and RS-4 (to east and
west). Terra Nova is zoned PC (Planned Community) by the City of Chula Vista.
C. Comnatibilitv with Zoning and Plans
The project site's General Plan designation in the County of San Diego is Residential-Low
(0-3 du/ac). The proposed City of Chula Vista General Plan designation for the site is
Residential-Low (0-3 du/ac). The current zoning, under the County of San Diego is RR-1
(1 acre minunum lot size). The proposed City of Chula Vista zoning is RE-P (mutimum lot
size of 20,000 square feet).
D. Identification of Environmental Effects
An initial study conducted by the City of Chula Vista (including the attached Environmental
Checklist Form) determined that the proposed project could have one or more significant
environmental effects. Subsequent revisions in the project design and/or specific mitigation
measures will be implemented to reduce these effects to a level below significant. With
project revisions and/or mitigation, no significant environmental effects will occur, and the
preparation of an Environmental Impact Report will not be required. This Mitigated
Negative Declaration has been prepared in accordance with Section 15070 of the State CEQA
Guidelines. Specific mitigation measures aze set forth in the Mitigation Monitoring Program
which is attached as Attachment "A".
The following impacts are those that were determined to be potentially significant and are
required to be mitigated to a level below significant. A discussion of each of these
potentially significant but mitigatable impacts from the proposed project follows.
BIOLOGICAL RESOURCES
Existing Conditions:
A biological survey was performed on the 8.52-acre Bonita Hills Executive Estate site to identify
sensitive biological resources and constraints for future development of the site. The Biological
Assessment for the site is on file in the City of Chula Vista Planning Department. The survey
revealed that the site is utilized by both Coastal Cactus Wrens and the California Gnatcatcher. The
former inhabits sage scrub and cactus near the ravine along the western fenceline, and territories
extend off-site into higher quality habitat immediately west. The gnatcatchers were noted at the same
locale; as well as in sage scrub now growing on the eastern boundazy of the site and further into the
eazthen seal for the reservoir (off-site). Two easements of 1.21 and 1.50 acres, which represent
approximately 30 °k of the project site, are proposed as dedicated biological open space to protect
these sensitive birds and their habitat.
Two plants of limited sensitivity were noted: several California Adolphia grow neaz the ravine along
the western boundary, and eight San Diego Viguiera occur further upslope to the north. Habitat
quality vazies widely on the property, with disturbed grasslands in the south and north, and fair to
good quality Diegan Sage Scrub covering much of the canyon's flanks in the center of the property.
Two vegetation types were present on the property: Diegan Sage Scrub and a very disturbed Annual
Grassland. Shrub diversity at the Bonita Hills site is relatively limited. The more diverse sage scrub
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is concentrated near the drainage along the western boundazy. Unusual for the region is the high
incidence of California Encelia, which although a common plant, is razely the dominant cover. Also
occurring is Coastal Sagebrush, Lemonadeberry in the more mesic canyon bottom, Flat-top
Buckwheat, Spanish Bayonet and Black Sage. Near the western boundazy, by the drainage, grows
some Jojoba, Coast Cholla, and further upslope San Diego Viguiera in limited numbers.
The understory is relatively limited. Native elements include the late-flowering San Diego Want
Chicory, Bicolored Cudweed, Ocean Locoweed and California Filago. At one artificially moist
locale, along the southern boundary, near an irrigated residential Yazd, is one Arroyo Willow and
a Great Marsh Evening Primrose. No other wetland species were seen on the property.
The disturbed Annual Grassland/Disturbed habitat includes an abundance of the noxious Tecolote and
Wild Mustard. The overall quality of this grassland is considered poor. Much of the grassland
habitat in the south may have been created during construction of the adjacent buried reservoir.
Grassy areas on the ridgeline in the north aze likely the result of peripheral residential disturbance.
Of the species of plants that were recorded on the site, thirty-seven are non-native invasive elements.
None of these additional species is expected to be listed as sensitive.
The Diegan Sage Scrub and Annual Grassland aze habitat types for wildlife on the site. A small
canyon with a few large shrubs at the western end of the property is kept moist by suburban runoff.
This is an attractive area for animal-life in an otherwise grid environment. Two sensitive species
of birds were observed utilizing the available sage scrub habitat, Coast Cactus Wren and California
Gnatcatcher.
No amphibian were observed. Only one species of reptile were observed. Fifteen species of birds
were observed on the site. Most of the species were associated with the natural sage scrub habitat.
As many as six Coastal Cactus Wrens were observed. One pair of California Gnatcatchers utilize
this property. No nesting activity was detected, but the quality of the available sage scrub habitat
is rather good. A separate single gnatcatcher was seen and heard briefly to the northeast of this
property along Randy Lane, indicating their presence there as well. Another pair of gnatcatchers
uses the revegetated sage scrub covering the adjacent underground reservoir and the small tract of
sage scrub off-site in the southeast (south of Moonview Drive).
Desert Cottontail was observed. Coyote was detected from its scat. California Ground Squirrel
burrows were found, and they undoubtedly occur on-site, pazticulazly within the disturbed terrain.
Potential Environmental Impacts:
Both the Riversidian phase and the Diegan phase of Coastal Sage Scrub have been severely reduced
in total acreage over the last century. Along with the extensive reduction in sage scrub has come
a piecemeal fragmentation of lazger tracts of such habitat. Isolation into small parcels devoid of
viable linkages to other similaz lands has undercut the value of such lands.
Substantial redesign has eliminated initial significant biological impacts. Several adverse biological
impacts will result from the proposed 12-lot split. _
• Loss of 1.5 acres of Diegan Sage Scrub. This habitat is severely declining in the
Bonita region due to urban development and its conservation is a focus of regional
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planning for both Chula Vista and San Diego County. This highest quality sage
scrub is situated in proposed open space B. Impacted sage scrub is of lesser or
degraded quality.
• The loss of eight San Diego Viguiera aze not considered biologically significant.
CULTURAL, RESOURCES
Existing Conditions:
An Archaeological/Historical Assessment was prepazed for the project site to determine if any
significant cultural resources were present. The entire Cultural Resource Survey is on file in the
City of Chula Vista Planning Department. Record searches were conducted at the San Diego
Museum of Man and the South Coastal Information Center at San Diego State University to identify
previously recorded archaeological sites within one mile of the site. No sites were recorded on the
project site, however, the record searches indicated that ten prehistoric sites have been recorded
within one mile of the property. All sites aze located along ridge tops overlooking either side
drainages or the Sweetwater River.
In 1981, the project site was part of a larger survey for Sweetwater Authority for the Bonita Valley
Reservoir Site. As a result of the 1981 investigation, no cultural resources were recorded. The
1981 study concluded that the area had been a working farm for over thirty yeazs. Historic maps
and aerial photographs do not reveal any pre-1942 farmsteads or activities on the site, although they
do reveal the fazm activities mentioned in the 1981 report, occurring on the knoll top by 1944.
Although, according to the 1981 study, debris related to farming was found on the site, none of it
was determined to be significant. No mitigation was required at that time.
The entire site was again surveyed for the current study in September, 1992. No prehistoric or
historic resources were located. Sprinkler heads were noted through the property suggesting the
possibility of past farming activities. Miscellaneous trash, asphalt and cement chunks and pieces of
road gravel were noted primarily along the road. A small, abandoned area, likely the remnants of
a worker's camp containing trash and a wooden platform, was located in the southwest azea. It was
determined to be non-significant, and therefore, no mitigation is necessary.
SOILS
Existine Conditions:
A Soil and Geologic Reconnaissance was to prepazed by Geocon,Inc. to provide preliminary
geotechnical information relative to the development of the proposed subdivision. The Geocon, Inc.
study is on file in the City of Chula Vista Planning Department. Two geologic formations and two
surfcial deposits were encountered dwing the reconnaissance. The geologic formations consisted
of Oligocene-aged Otay Formation and Pliocene-aged San Diego Foundation. The surficial deposits
consisted of fill and topsoil. The Oligocene-aged Otay Formation is located neaz the northern portion
of the site. The Otay Formation does have contact with the younger (overlying) San Diego
Formation within the open space azea of Open Space Lot "A". The formation generally consists
of dense sandstone and claystones. Due to the formation being located only within the open space
azea it should not be encountered during grading for the proposed development.
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The San Diego Formation (Tsd) is a dense, tan/light gray, silty, fine-grained (with some gravel)
associated with the San Diego Formation which appears to be the predominant formation underlying
the site. Excavation within this unit will likely require moderate to heavy efforts with conventional
heavy-duty grading equipment. Localized cemented zones, if encountered, may require a very heavy
effort.
The San Diego Formatio~t should provide suitable foundation engineering chazacteristics for proposed
structures in either an undisturbed or properly compacted condition. Cut slopes and compacted fill
slopes constructed at 2:1 (horizontal: vertical) or flatter should generally be stable. These soils, when
used to construct fill slopes, are very susceptible to surficial erosion and should be properly planted
to reduce the potential for erosion.
Topsoils consisting of silty to slightly clayey, fine sands were observed overlying the formational
units and were visually classified as relatively "low" -expansive with observed thicknesses of
approximately 1 to 2 feet (where exposed) and may be as thick as 3 feet in some locations. Due to
the generally loose, unconsolidated nature of the topsoil, it should be removed and recompacted prior
to placing fill or structural loads.
There is a fill slope, on the site, associated with the underground reservoir east of the project site.
Where fills are proposed above the existing reservoir fill soils, these areas may require subsurface
investigation (trenches, etc) where structural improvements are considered. Other minor fills were
noted on, or adjacent to, the site. These soils will require additional investigation where
improvements are proposed. It is anticipated that the above-mentioned fills were derived from soils
similar to those previously discussed.
No evidence of landslides was found in previous reports or photographs and none were observed on
the site. No groundwater or seeps were observed during the reconnaissance.
The site is not located on any known active or potentially active fault trace. The Coronado Banks
Fault, which is considered to be active, lies approximately 18 miles west of the site. The Rose
Canyon Fault is located approximately 8 miles from the site and is the closest active fault to the site.
The site is located within the La Nacion Fault zone with the nearest splay approximately 1,600 feet
to the west. Regional active faults include the Elsinore Fault and the San Jacinto Fault zones, which
lie approximately 41 and 62 miles to the northeast, respectively. In an event of a major earthquake
on these or other faults in the southern California region, the site could be subjected to moderate to
severe ground shaking. With respect to this hazazd, this site is comparable to others in the general
vicinity. Due to the high density of prevailing formational soils at the site, anticipated remedial
grading of the surficial soils, and the lack of a permanent near-surface groundwater table, there does
not appear to be a significant risk of seismically induced liquefaction occurring on the property.
Mitigation Measures:
Conclusion:
No significant soil or geologic conditions have been observed or are known to exist which would
preclude development of the property. Provided the mitigation recommendations in the Geologic
Reconnaissance are adhered to there will be no significant impact related to geology or soils.
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DRAINAGE/HYDROLOGY
Existing Conditions:
Due to the topography of the site, drainage is considered to be a potentially significant impact. A
Drainage Study was prepazed for the site and is on file in the City of Chula Vista Planning
Depaztment.
The subject property is dominated by a saddle located in the center portion of the property between
two knolls located on the northern and southern extremes of the project. The proposed northern six
lots would be developed on the descending ridgeline of the northern knoll. The southern six lots
would be located on the northern side of the southern knoll. The central saddle descends to a canyon
and natural drainage course to the west. The northern 150 feet of the property is steep in grade and
would not be disturbed by the proposed project.
Due to the site's location in close proximity to hilltops, very little offsite land (approximately 1.1
acres) contribute to the study area's drainage basins. In a natural condition, only property to the east
would naturally drain towazds the project. However, the drainage generated offsite to the east of
the site is collected in the Sweetwater Authority storm drain system and directed to the northeast
away from site.
The drainage srudy area consists of two well-defined drainage areas. The area to the north of the
ridgeline of the northern knoll encompasses approximately 2.1 acres and generates 4.27 cubic
feet/second (cfs) of run-off in a 100-year storm. This water exits the project site in an even
sheetflow down the steep slope descending to the north of the site.
The second existing drainage area encompasses the majority of the project site which is located south
of the ridgeline of the northern knoll, along with a small area off-site on the slope of the southern
knoll and portions of the canyon banks to the west. This basin generates an existing 18.14 cubic
feedsecond (cfs) of run-off in a 100 year storm which is concentrated offsite into the flowline of the
small canyon descending westerly from the central project site area.
A portion of the access road abutting the central portion of the site along its eastern boundary is part
of the proposed subdivision, however, it has not been included in the Drainage Srudy since the road
is already developed and its drainage is collected in the storm drainage system developed as pazt of
the underground reservoir and dischazged offsite. No change in this drainage is proposed as part
of the proposed project.
Proposed Developed Drainaee:
The developed drainage analysis is based on proposed site improvements as shown on the tentative
map for the project Chula Vista Tract Map No. 91-2 dated March 3, 1993. The drainage basin areas
following site development will remain basically the same as in the existing condition (see Figure
1). There would be little change in Drainage Area B. For the three lots proposed on the north side
of proposed Street "C", the rearyazds would sheet drain to the north and the frontyazds would drain
south to the street. Though there will be a small increase in Drainage Area B, it will be offset by
the increased time of concentration due to the shallow slope of the proposed pad. Therefore,
although there will be a slight increase in drainage, it does not constitute a significant impact.
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Drainage Area A will be impacted due to the construction of a surface collection and underground
drainage conveyance system for the proposed development. Some run-off from portions of Area A
will be conveyed in a different manner than in the existing condition. Drainage Subareas AI, AZ,
A3, A, and A5, will be directed to the underground storm drain system with its outlet in Lot B.
Drainage Subazeas ,46 and A~ will be collected at the rear of the graded pads, duected to the rip rap
energy dissipators to be located on the north side of these lots, from which they will drain into the
western canyon.
The Drainage Study concludes that there will be a slightly lower quantity of runoff after development
than in the existing condition, due to the drainage improvements that aze proposed. This reduction
is due to the lazger time of concentration caused by the change in landform and increased time for
the drainage to be routed in the street curb and gutter system prior to release in the underground
storm drains.
Erosion /Sedimentation:
There is minimal erosion currently from the site due to dense vegetation on the canyon slopes and
the sheetflow nature of the existing drainage pattern. In the developed condition, all of the drainage
subareas of Area A except for AS will be concentrated, and thus increasing its erosive possibilities.
Drainage Subareas A\ through A4 and A6 and A~ have a total quantity of approximately 9.05 cfs.
If this quantity were released duectly in a concentrated condition on the canyon sideslopes, the slopes
could erode and cause downstream siltation. This can be eliminated by extending the storm drains
to the flowline of the existing canyon and reducing the outlet velocities. The extension of the storm
drains to the flowline along with the proposed installation of rip rap and splashwalls would mitigate
the impact of the increased drainage from the proposed development.
WATER QUALITY/EROSION:
Due to the topography of the site, sedimentation could be a significant short- and long-term impact.
The long-term impact related to drainage has been addressed in the drainage section above with
appropriate mitigation measures recommended.
Erosion and sedimentation impacts during the grading and construction period would beshort-term,
especially after storm events, and would be potentially significant. These impacts would occur only
if adequate erosion control measures aze not applied during and after the eazthwork stage when
disturbed soil is left temporarily unprotected.
Long term erosion may occur from exposure of graded land if the area is not adequately landscaped
soon after grading. These impacts are also considered to be potentially significant.
The applicant will be required to comply with the General National Pollutant Discharge Elimination
System (NPDES) permit issued to San Diego County by the State Water Resources Control Board
for grading and construction activities. Individual projects fall under the General Permit issued to
San Diego County by filing a Notice of Intent (NOI), including a Storm Water Pollution Prevention
Plan (SWPPP), with the State Water Resources Control Boazd prior to commencing grading
activities. The SWPPP also addresses runoff from the site after construction to ensure that the future
runoff is in compliance with the NPDES. Implementation of the recommended mitigation measures
will mitigate the impact of sedimentation to less than significant.
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E. Mitigation necessary to avoid significant effects
Specific project mitigation measures aze required to reduce potentially significant
environmental impacts identified in the initial study for this project to a level below
significant. Mitigation measures have been incorporated into the project design and have
been made conditions of project approval, as well as requirements of the attached Mitigation
Monitoring Program (Attachment "A").
BIOLOGICAL RESOURCES
Two dedicated open spaces aze recommended, and have been incorporated into the tentative
map, which will include 1.2 acres of the higher quality Diegan Sage Scrub on-site in Area
A, and protect habitat for both the Coastal Cactus Wren and the California Gnatcatcher. The
California Adolphia will also be protected within these aeeas. The western open space (Area
B) is 1.5 acres and is contiguous with high quality cactus wren and gnatcatcher habitat off-
site to the west. It also links the revegetated lands of the reservoir with this sage scrub-
dominated habitat (sepazated only by the existing paved road). Lot A covers a steep north-
facing slope with grassland habitat. Specific mitigation measures to avoid specific significant
biological impacts are as follows:
No clearance of vegetation or other forms of habitat and soil disturbance shall occur
within the dedicated open space areas (Lots A and B), with the exception of the
construction of the sewage pipes and storm drainage pipe. In such case, disturbance
shall be at the minimum required to accommodate construction.
2. 0.3 acre of disturbed grassland Diegan Sage Scrub in Lot B shall be revegetated in
accordance with the recommendations in the Pacific Southwest Biological Services
Assessment for the project dated September 4, 1992. Artemisia californica, Encelia
californica, Eriogonum fasciculatum, Diplacus puniceus, and Salvia mellifera should
be the principal shrubby components of this revegetation. A three-yeaz monitoring
plan shall be implemented to ensure the successful establishment of this scrub. The
0.3 acre constitutes the entire area within Area B mapped as grassland.
3. Prior to consideration of any fatal subdivision or pazcel map, issuance of a grading
permit, or issuance of a building permit for any portion of the project site, proof of
an incidental take permit under Section 7, Section l0a of the Endangered Species Act
or any other form of approval by the US Fish & Wildlife Service, relative to the
California Gnatcatcher or Coastal Sage Scrub, shall be provided to the Environmental
Review Section of the Planning Department. If such permit is not required, written
verification to that effect from the U.S. Fish and Wildlife Service shall be provided.
Any project redesign required in obtaining a Section 7 or l0a pernut may requve
reconsideration by the appropriate City decisionmaking body.
CULTURAL RESOURCES
No significant impacts were identified, therefore, no mitigation is necessary.
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SOILS
4. All recommendations of the Soi] and Geologic Reconnaissance prepazed for the
Bonita Hills Executive Estates by Geocon Incorporated, dated December, 1992, shall
be adhered to.
5. A 20- to 30-foot high neaz vertical slope within the central drainage at the western
boundary may experience additional erosion. Consideration should be given in the
design process for future slope relation within the immediate azea.
6. All future geotechnical subsurface investigation for the site should include review of
the fill compaction report for the underground water reservoir at the eastern
boundary.
7. The topsoils overlying the formational units will require remedial grading in the form
of removal and recompaction in azeas of proposed improvement. A subsurface
investigation and laboratory testing will be required to determine actual depths of
removals.
8. Existing fills in azeas of proposed improvement should be evaluated during future
investigations.
9. Excavations within the on-site soils should generally be possible with moderate to
heavy efforts with conventional heavy-duty grading equipment. Localized cemented
zone, if encountered, may require a very heavy effort.
10. Deleterious materials encountered during grading, such as tree roots, should be
excavated and disposed of off site.
11. Cut and fill slopes planned at inclinations of 2:1 (horizontal:vertical) or flatter with
maximum heights of 13 feet should generally be stable against deep-seated failure.
12. Cut and fill slopes will be provided with an erosion-resistant ground cover and an
adequately designed and maintained irrigation system as soon as practical to reduce
the erosion potential. Constructed slopes should be designed with appropriate
drainage systems; water will not be allowed to dischazge over the top of slopes.
13. In general, the prevailing soil conditions in either a dense undisturbed or properly
compacted condition aze suitable for the support of conventional isolated and
continuous spread footings. It is anticipated that "very low" expansive soils will be
encountered or will be placed as fill in the azeas influencing future foundations.
Foundation design, including an allowable soil beazing pressure and estimated
settlements, should be incorporated within future geotechncial studies.
14. Prior to the finalization of the grading and improvement plans, a detailed soil and
geologic investigation addressing the proposed development shall be performed.
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DRAINAGE/HYDROLOGY
15. All drainage improvements shown on Tentative Map 91-2 dated March 2, 1993,
including rip rap velocity dissipators at outlet locations on the banks of the existing
slopes, shall be implemented to the satisfaction of the City Engineer.
16. Storm drains shall be extended to the flow line of the canyon. Outlets and energy
dissipators shall be designed to the satisfaction of the City Engineer.
WATER OUALITY/ER09ION:
17. The developer shall prepare an erosion and sedimentation control plan, in compliance
with the NPDES permit issued to San Diego County, for the proposed development
to address the impacts of short-term construction and grading activity. Said plan
shall be incorporated into the project's grading and construction plans and shalt be
approved by the City Engineer prior to issuance of grading permits.
18. The project shall comply with the provisions of the State Water Resources Control
Board (State Water Board) Order Number 92-OS-DWQ, National Pollutant Discharge
Elimination System (NPDES) General Permit Number CAS 000002, Waste Discharge
Requirements (WDRS) for Discharges of Storm Water Runoff Associated with
Construction Activity including the preparation of a Storm Water Pollution Prevention
Plan.
19. All graded slopes shall be properly planted to reduce the potential for erosion.
Landscape plans shall be subject to approval of the Planning Director prior to
issuance of grading permits.
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F. Consultation
1. Individuals and Organizations
Ciry of Chula Vista: Marilyn R. F. Ponseggi, Planning Consultant
Roger Daoust, Engineering
Cliff Swanson, Engineering
Hal Rosenberg, Engineering
Bob Sennett, Planning
Ken Larsen, Duector of Building & Housing
Carol Gove, Fire Marshal
Crime Prevention, MazyJane Diosdada
Marty Schmidt, Parks & Recreation Dept.
Rich Rudolf, Assistant City Attorney
Chula Vista City School District: Kate Shurson
Sweetwater Union High Schoo] DisVict: Tom Silva
Applicant's Agent: Sidney Xinos, Xinos Engineering
David B. Parot, Xinos Engineering
2. Documents
Chula Vista General Plan (1989) and EIR (1989)
Title 19, Chula Vista Municipal Code
Biological Assessment of the Proposed Bonita Hills Estates, City of Chula Vista,
California, prepared by Pacific Southwest Biological Services, Inc., September 4,
1992, revised March 16, 1993 (Appendix "A")
Cultural Resources Survey of the Proposed 8.9 acre Demich Subdivision Chula Vi$
Tract #91-2, Chula Vista, California, prepared by Roth and Associates, September,
1992 (Appendix "B")
Soil and Geologic Reconnaissance for Bonita Hills Executive Estates, Chula Vista,
California, prepared by Geocon, Inc., December, 1992
(Appendix "C")
Drainage Study for Bonita Hills Executive Estates, prepazed by Xinos Enterprises,
Inc., Mazch 31, 1993 (Appendix "D")
C:\NANCY\\DEMICH.IS\ Page 12
Initial Study
This environmental determination is based on the attached Initial Study as well as any
comments on the Initial Study and this Mitigated Negative Declaration, and reflects
the independent judgement of the City of Chula Vista. Further information regarding
the envirotmental review of the project is available from the Chula Vista Plantring
Department, 276 Fourth Avenue, Chula Vista, CA 91910.
~~ i 2 G~ ~ ~~~~ y. ,/7 , ~ ~ /~ /hP /
ENVIRONMENTAL REVIEW COORDINATOR
EN 6 (Rev. 5/93)
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