HomeMy WebLinkAboutAgenda 08_BSD Aviation Tech355 Main Street | Suite 500 | Winooski, VT 05404 | w. eivtech.com
May 31, 2024
Marla Keene, PE
Development Review Planner
City of South Burlington
180 Market Street
South Burlington, VT 05403
Re: Burlington International Airport
Burlington School District’s Aviation Technical Center Project
Site Plan Application Response to Staff Comments for DRB 6/4/2024
Dear Marla Keene,
Thank you for your time to review our site plan application for the above reference project. In advance of the
Development Review Board meeting on June 4, 2024, we are providing a response to staff comments. Two plansheets
have been revised and resubmitted in response to these comments. These plansheets have cloud revision bubbles around
the proposed changes. The appropriate file naming convention (noting the revision date in the file name) has been made
and they have been uploaded to the ShareFile Site Plan Application submission folder.
The revised plansheets are referenced in the the response to comments below:
1. There is no safe pedestrian access to the building from Davinci Drive either existing or proposed, though
there is a sidewalk along Davinci Drive. Given the proposed use of the building for students, and the City’s
prioritization of personal mobility (ie biking and walking), Staff recommends the Board discuss with the
applicant how to improve access to the site for users that are not arriving in cars or buses.
Response: A walkway and crosswalk with signage have been added to the site plan (06_SP-01 - SITE
PLANS_REV20240531) to provide the requested pedestrian access from the recently constructed Da Vinci Drive
sidewalk.
2. Staff recommends the Board ask the applicant to demonstrate that the parking is the minimum necessary
and discuss whether they will allow this exemption for parking.
Response: The net increase in parking of 26 spaces is the minimum necessary for the school’s proposed operations.
355 Main Street | Suite 500 | Winooski, VT 05404 | w. eivtech.com
3. Staff recommends the Board ask the applicant to demonstrate that the proposed pavement is
minimized near the entrance to Davinci Drive. Too wide open a pavement area with multiple (four in
this case) non-perpendicular locations for cars to come from can lead to safety issues. The driveway at
the west end is narrow, so it does not appear this area is needed for large vehicle circulation.
Response: The pavement width in this area is necessary for the operations of the Beta loading docks. This is
an existing condition as that entrance was just paved last year as part of the Beta assembly plant project.
This widened pavement is also necessary for the school buses to make their turn movement from the bus
loading area onto Da Vinci Drive.
4. Staff recommends the Board ask the applicant to explain at what point the existing overhead
utilities will be located underground, and consider requiring the utilities to be located underground at
the upstream most pole that is impacted by the work.
Response: The existing power service to the building is currently underground from the adjacent transformer
and this transformer is powered via underground conduits to the pole near Da Vinci Drive. With the
installation of a new transformer this same underground configuration is being proposed as shown on the
Utility Site Plan.
5. Staff recommends the Board ask the applicant to verbally answer the questions of the Director
of Public Works and include conditions for any necessary modifications.
●The applicant will need to work with the wastewater superintendent to confirm that the project
has a sufficient wastewater allocation for the change in use. Response: A coordination meeting
was held with the water & sewer department after the submission of our Water & Sewer Engineers
report to the City, which resulted in the issuance of an Ability To Serve letter by the water district and
verbal concurrence for wastewater. The Ability To Serve letteris included in our application.
●The wastewater pump station will remain privately owned. Response: Correct
●Does the property have an existing oil / water / grease / grit separator? Will the change in use
require that one be installed? Response: An existing oil/water separator exists for the current floor
drains and will be rehabilitated or replaced as part of the proposed project. The proposed kitchenette
area will be for warming food only, and no food preparation will occur onsite. Therefore a grease
trap is not required.
●Are any water (or other) easements proposed to be transferred to the City? Response: No
6. The applicant is proposing an on-grade striped pathway from the parking area to the building.
Staff recommends the Board consider requiring the pathway to be raised by a curb and consider
requiring a sidewalk connection and crosswalk to Davinci Drive, as alluded to above.
Response: See response to #1 above. A raised walkway was not proposed as stormwater runoff from traverses
across the pavement to the existing closed drainage systems.
355 Main Street | Suite 500 | Winooski, VT 05404 | w. eivtech.com
7. The building is 34,445 sf and is proposed to be used by 12 employees and 100 students. One
short term space is required for each 20 students of planned capacity, or five spaces. It does not
appear the applicant has proposed any bicycle parking. Staff recommends the Board require the
applicant to add short term bicycle parking to the plan proximate to a student entrance.
Response: The project is proposing 8 bike spaces as shown on drawing SP-02. These are covered spaces
with a bike rack. The project is also planning for 2 interior bike lockers as well.
8. No parking lot landscaping is proposed. Staff recommends the Board require the applicant
to revise their plans to provide landscaping to screen the proposed and reconfigured parking from
the future public street.
Response: The landscaping plan, drawing LL-02 (14_LL-02 - LIGHTING & LANDSCAPING
PLAN_REV 20240531) has been revised to include additional plantings around the existing parking lot
that will be expanded. The locations for proposed plantings are limited due to the slopes between
DaVinci Drive and the parking area.
9. Staff recommends the Board require the applicant to demonstrate compliance with this
criterion by providing a figure showing the parking area and the fraction landscaped.
(2) In all parking areas containing twenty-eight (28) or more contiguous parking spaces and/or
in parking lots with more than a single circulation lane, at least ten percent (10%) of the interior
of the parking lot shall be landscaped islands planted with trees, shrubs and other plants. Such
requirement shall not apply to structured parking or below ground parking.
Response: Although the parking area has more than 28 spaces, it is a single drive isle with no
opportunities for internal landscape areas. In response to these comments, additional landscaping is
proposed around the parking lot as described in the response to #8 above.
10. No curbing is proposed. Staff considers curbing will be required to protect adjacent
landscaping except where the adjacent area is specifically designed as a stormwater collection or
treatment area.
Response: Curbing is proposed along the frontage of the building as well as on the Da Vinci Road side of
the parking lot expansion area. Curbing is intentionally not proposed between the proposed work area
and the GA Hangar pavement areas because it would restrict the current stormwater runoff from this area
into the existing closed drainage system. The proposed work includes a stone line channel to direct the
runoff to the proposed bioretention basin for treatment prior to entering the existing drainage system.
11. While Staff considers the proposed plantings to not be sufficient replacement for the removed
trees, as described above, the applicant must also provide parking lot landscaping, including shade
trees. Staff considers the combined resulting planting likely to be adequate to replace the removed
trees, and recommends the Board confirm once the proposed parking lot planting plan is complete.
Response: Additional plantings have been added, please refer to the response to #8 above.
355 Main Street | Suite 500 | Winooski, VT 05404 | w. eivtech.com
12. Staff recommends the Board provide Staff an opportunity to provide an update at the time of the hearing.
(related to any stormwater comments, none received to date)
Response: No response required at this time, we had a pre-application meeting with the stormwater department and can
answer any additional comments they may have.
13. Staff recommends the Board require the applicant to demonstrate submission of an application for
Determination of No Hazard, and condition the approval on receipt of an issued determination. (Development
within the Airport Approach Cones)
Response: This is not applicable as it is only required for new or expanded buildings. This is an existing buildings and
submission of a FAA 7460 airspace analysis review is not required.
14. Staff notes there is one “hotspot” of 15 footcandles near the eastern entrance of the building and recommends
the Board discuss whether to direct the applicant to reconfigure the proposed lighting to reduce this hotspot to on
the order of 8 – 10 footcandles.
Response: This is the result of three closely spaced man doors with lights over each door, the center man door light has
been removed to reduce the light intensity in this isolated area to less than 10 footcandles. Please see the revised
drawing LL-02 (14_LL-02 - LIGHTING & LANDSCAPING PLAN_REV 20240531).
15. Screening is proposed for the proposed generator but not for the proposed utility transformer. Staff
recommends the Board ask the applicant to describe the proposed height of the generator in order to determine if
screening is adequate.
Response: At this time the generator is expected to be roughly 8-9’ in height based on preliminary sizing. The proposed
plantings will partially screen the generator.
16. Staff recommends the Board require the applicant to provide screening of sufficient height to screen the
transformer from the street.
Response: Additional plantings have been added between the transformer and the sidewalk as screening as shown on the
revised drawing LL-02 (14_LL-02 - LIGHTING & LANDSCAPING PLAN_REV 20240531). We would propose
grasses similar to what is proposed in front of the generator. These would provide a partial screening to the height of the
transform (estimated to be 5-6’ in height) but would also still allow access to the transformer for maintenance &
inspections.
We appreciate your time to review and receive our response to staff comments in advance of the Development Review
Board meeting on June 4, 2024. Feel free to contact Larry Lackey, or Jacqueline Dagesse at EIV, with any questions
regarding this submission, 802-324-5522.
Very Respectfully,
EIV Technical Services
Jacqueline Dagesse, MBA, CPESC
President / Environmental Engineer
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PROPOSED CONCRETE HVAC
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PROPOSED OVERHEAD DOOR
PROPOSED GENERATOR PAD
PROPOSED TRANSFORMER PAD
PROPOSED LAWN AREA
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PROPOSED LANDSCAPING AREAMAIN ENTRANCE
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PROPOSED SNOW STORAGE AREA
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802▪864▪6844▪ www.fffinc.com
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18715.02
03/01/2024
SP-01
PERMIT SET
PROJECT DATA
1. APPLICANT / LAND OWNER:
BURLINGTON SCHOOL DISTRICT
200 DAVINCI DRIVE
SOUTH BURLINGTON, VERMONT 05403
2.EXISTING ZONING: AIRPORT INDUSTRIAL
PARKING:
1 SPACE FOR EACH 2 EMPLOYEES ON MAXIMUM WORKING SHIFT.
TOTAL EMPLOYEES = 10
REQUIRED:
5 TOTAL SPACES REQUIRED
PROVIDED:
12 (UNSHARED), 79 TOTAL SPACES
ADA SPACES REQUIRED:
PER 2010 ADA STANDARDS FOR ACCESSIBLE DESIGN
REQUIRED (75-100 SPACE LOT): 4 SPACES)
FOR TOTAL PARKING 50-100 SPACES
PROVIDED (79 SPACE LOT): 4 SPACES
ZONING:
EXISTING:±796 ACRES AIRPORT INDUSTRIAL
PROPOSED:±796 ACRES AIRPORT INDUSTRIAL
TAX ACCOUNT NUMBERS:600-188-10911
SITE DATA
FEATURE REQUIRED PROPOSED
MINIMUM LOT SIZE,
NONRESIDENTIAL 3 ACRES 796.05 ACRES
MINIMUM FRONT YARD,
FROM RIGHT-OF-WAY 50 FEET > 50 FT
MINIMUM SIDE YARD 35 FEET > 35 FEET
MINIMUM REAR YARD 50 FEET > 50 FEET
MAXIMUM HEIGHT 40 FEET N/A
MAXIMUM LOT
COVERAGE 50%N/A
1 4/10/2024 CITY COMMENTS
2 5/31/2024 CITY COMMENTS
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WILLISTON, VT 05495
P: (802)862-9381
WWW.MJINC.COM
81 Maple Street▪ Burlington VT 05401
802▪864▪6844▪ www.fffinc.com
Architecture▪ Planning▪ Interiors
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18715.02
03/01/2024
LL-02
PERMIT SET
PLANTING NOTES
1.ALL NEW PLANT MATERIAL SHALL CONFORM TO THE MINIMAL GUIDELINES
ESTABLISHED BY THE AMERICAN STANDARD FOR NURSERY STOCK PUBLISHED BY THE
AMERICAN ASSOCIATION OF NURSERYMEN, INC. PROVIDE QUALITY, SIZE, GENUS,
SPECIES, VARIETY OF TREES AND SHRUBS INDICATED, AND ROOT BALL SIZE
COMPLYING WITH APPLICABLE REQUIREMENTS OF ANSI Z60.1 “AMERICAN STANDARD
FOR NURSERY STOCK.” ALL PLANTS SHOULD BE NURSERY GROWN UNDER CLIMATIC
CONDITIONS SIMILAR TO THOSE IN THE LOCALITY OF THE PROJECT.
2.PLANT SIZES: MEASURE TREES AND SHRUBS ACCORDING TO ANSI Z60.1 WITH
BRANCHES AND TRUNKS OR CANES IN THEIR NORMAL POSITION. TAKE CALIPER
MEASUREMENTS 6 INCHES ABOVE GROUND FOR TREES UP TO 4-INCH CALIPER SIZE,
MEASURE MAIN BODY OF TREE OR SHRUB FOR HEIGHT AND SPREAD; DO NOT MEASURE
BRANCHES OR ROOTS TIP-TO-TIP.
3.ALL CONTAINER GROWN PLANTS SHALL SIZED ACCORDING TO ANSI Z60.1 FOR TYPE
AND SIZE OF PLANT REQUIRED. PLANTS SHALL BE PREMIUM QUALITY, APPEAR 'FULL',
OR 'HEAVY' WITHIN THEIR CONTAINER, AND BE REPRESENTATIVE OF THE CONTAINER
SIZE SPECIFIED. PLANTS DEEMED TO BE SUBSTANDARD IN SIZE BY THE OWNERS
REPRESENTATIVE WILL BE REJECTED.
4.ALL NEW PLANTS TO BE BALLED AND BURLAPPED OR CONTAINER GROWN UNLESS
OTHERWISE NOTED ON PLANT LIST.
5.TREES SHOULD BE FRESHLY DUG DURING THE SEASON OF PLANTING, MARCH 1ST TO
MAY 1ST FOR SPRING PLANTING AND OCTOBER 15TH TO DECEMBER 15TH FOR FALL
PLANTING. PLANTS KNOWN AS FALL DIG HAZARDS SHALL BE DUG IN THE SPRING ONLY.
6.THE CONTRACTOR SHALL SUPPLY ALL NEW PLANT MATERIAL IN QUANTITIES
SUFFICIENT TO COMPLETE THE PLANTING SHOWN ON THE DRAWINGS.
7.IN GENERAL, PLANT SPECIES SUBSTITUTIONS WILL NOT BE ACCEPTED. IF SPECIFIED
MATERIAL IS NOT OBTAINABLE, CONTRACTOR SHALL SUBMIT PROOF OF
NON-AVAILABILITY ALONG WITH PROPOSED SUBSTITUTION. ANY PROPOSED
SUBSTITUTIONS OF PLANT SPECIES SHALL BE MADE WITH PLANTS OF EQUIVALENT
OVERALL FORM, HEIGHT, SIZE, BRANCHING HABIT, FLOWER, LEAF, COLOR, FRUIT AND
CULTURE, AND ONLY AFTER WRITTEN APPROVAL OF THE OWNERS REPRESENTATIVE.
8.THE OWNERS REPRESENTATIVE RETAINS THE RIGHT TO INSPECT TREES AND SHRUBS
FOR SIZE AND CONDITION OF BALLS AND ROOT SYSTEMS, INSECTS, INJURIES AND
LATENT DEFECTS, AND TO REJECT UNSATISFACTORY OR DEFECTIVE MATERIAL AT ANY
TIME DURING PROGRESS OF WORK. CONTRACTOR SHALL REMOVE REJECTED TREES
OR SHRUBS IMMEDIATELY FROM PROJECT SITE.
9.CONTRACTOR SHALL LOCATE AND VERIFY ALL EXISTING UTILITY LINES PRIOR TO
PLANTING AND SHALL REPORT ANY CONFLICTS TO THE OWNERS REPRESENTATIVE.
10.INSTALLED PLANTS SHALL BEAR THE SAME RELATIONSHIP TO PROPOSED GRADE AS
THEY BORE TO PREVIOUS GRADE. NO TREES SHALL BE PLANTED BEFORE ACCEPTANCE
OF ROUGH GRADING.
11.CONTRACTOR SHALL PROVIDE LONG LASTING, SLOW RELEASE STARTER FERTILIZER IN
EACH PLANTING PIT FOR TREES, SHRUBS AND PERENNIALS.
12.ALL PLANT BEDS SHALL RECEIVE THREE INCHES (3") OF SHREDDED BARK MULCH.
MULCH SHALL BE FREE FROM DELETERIOUS MATERIALS AND SUITABLE AS A TOP
DRESSING OF TREES AND SHRUBS, CONSISTING OF DOUBLE HAMMERED SHREDDED
BARK MULCH COMPRISED OF EITHER HARDWOOD OR SOFTWOOD SHREDDED BARK.
SHREDDED BARK MULCH SHALL NOT EXCEED 3" IN GREATEST DIMENSION, AND SHALL
BE DARK BROWN IN COLOR.
13.PLANTS SHALL BE DELIVERED ONLY AS THEY CAN BE INSTALLED IN REASONABLE TIME.
ALL PLANTS ARE SUBJECTED TO INSPECTION AT DELIVERY BY THE OWNER'S
REPRESENTATIVE.
14.IF DISCREPANCIES EXIST BETWEEN THE NUMBER OF PLANTS DRAWN ON THE PLANTING
PLAN AND THE NUMBER OF PLANTS IN THE PLANT LIST, THE PLANTING PLAN SHALL
GOVERN.
15.MAINTENANCE SHALL BEGIN IMMEDIATELY AFTER EACH PLANT IS PLANTED AND SHALL
CONTINUE FOR A MINIMUM 30-DAY MONITORING PERIOD AFTER NOTIFICATION OF
SUBSTANTIAL COMPLETION OF PLANTING, AND UNTIL FINAL ACCEPTANCE.
MAINTENANCE INCLUDES PRUNING, WEEDING, WATERING, FERTILIZATION, AND
RE-SEEDING AS NECESSARY.
16.PROTECT PLANTS FROM DAMAGE DUE TO LANDSCAPE OPERATIONS AND OPERATIONS
OF OTHER CONTRACTORS AND TRADES. MAINTAIN PROTECTION DURING INSTALLATION
AND MAINTENANCE PERIODS. TREAT, REPAIR, OR REPLACE DAMAGED PLANTINGS.
17.ACCEPTANCE STANDARDS:
17.1.PLANTS SHALL BE FREE OF FROST CRACKS; SUN SCALD; DAMAGE DUE TO INSECTS,
PESTS, AND DISEASE; STRUCTURAL DEFECTS; AND DAMAGE RESULTING FROM
MACHINERY OR TOOLS. ALL PLANTS REGARDLESS OF THE SEASON OF REVIEW
SHALL HAVE A MINIMUM OF 75 PERCENT HEALTHY, BALANCED BRANCHING
STRUCTURE WITH A HEALTHY TERMINAL LEADER(S) WITH VIABLE TERMINAL BUD(S).
TREES SHALL BE PLUMB AND SHOW NO SIGNS OF UNEVEN SETTLING OR LEANING.
17.2.LAWN AREAS SHALL HAVE A HEALTHY, UNIFORM STAND OF GRASS FREE OF
WEEDS, SURFACE IRREGULARITIES, WITH COVERAGE EXCEEDING 90% OVER ANY
10 SQ. FT. AND BARE SPOTS NOT EXCEEDING 5"X5"
18.CONTRACTOR SHALL REPLACE ALL PLANTS THAT ARE MORE THAN 25% DEAD OR, AS
DETERMINED BY THE OWNERS REPRESENTATIVE, ARE IN AN UNHEALTHY OR
UNSIGHTLY CONDITION. CONTRACTOR SHALL BEAR THE COST OF COMPLETE
REPLACEMENT(S). REPLACEMENTS SHALL BE OF THE SAME SIZE AND SPECIES AS
SPECIFIED ON THE PLANTING LIST.
19.GUARANTEE: CONTRACTOR SHALL GUARANTEE ALL PLANT MATERIAL TO REMAIN ALIVE
AND BE IN A HEALTHY, VIGOROUS CONDITION FOR A PERIOD OF ONE YEAR AFTER FINAL
ACCEPTANCE OF PLANTING WORK, AGAINST DEFECTS INCLUDING DEATH AND
UNSATISFACTORY WORK.
20.GRASS SEED SHALL BE FRESH, CLEAN, DRY, NEW-CROP SEED COMPLYING WITH
AOSA'S "RULES FOR TESTING SEEDS" FOR PURITY AND GERMINATION TOLERANCES.
PROVIDE SEED MIXTURE COMPOSED OF SPECIES, PROPORTIONS AND MINIMUM
PERCENTAGES OF PURITY, GERMINATION, AND MAXIMUM PERCENTAGE OF WEED
SEED, AS FOLLOWS:
PROPORTION GERMINATION PURITY
COMMON NAME BY WEIGHT MINIMUM MINIMUM
CREEPING RED FESCUE 50% 85%95%
OR CHEWINGS FESCUE
KENTUCKY BLUEGRASS 25% 85% 90%
PERENNIAL RYE 25%90%90%
21.PLANTING SOIL & TOPSOIL SHALL HAVE A SANDY LOAM, LOAMY SAND, OR LOAM
TEXTURE AS DETERMINED BY MECHANICAL ANALYSIS (ASTM 422) AND BASED ON THE
'USDA CLASSIFICATION SYSTEM' MAXIMUM CLAY CONTENT SHALL BE 10%. TOPSOIL
SHALL BE FERTILE, FRIABLE SOIL FREE OF STONES LARGER THAN ONE INCH IN ANY
DIRECTION, LUMPS, PLANTS AND THEIR ROOTS, DEBRIS AND OTHER EXTRANEOUS
MATTER AS DETERMINED BY THE OWNER'S REPRESENTATIVE, AND TOXIC MATTER
HARMFUL TO PLANT GROWTH,
PLANTING SOIL /TOPSOIL SPECIFICATION:
GRADATION:
SIEVE % PASSING BY WEIGHT CHEMICAL ANALYSIS
MIN. MAX.
#10 100 PH RANGE 5.2-7.0
#20 78 95 ORGANIC MATTER 4%-6%
#40 67 87 MAGNESIUM 35LB. PER AC
#60 48 78 PHOSPHORUS 75LB/AC
#100 40 75 POTASSIUM 85LB/AC
#200 28 63 SOLUBLE SALTS NOT TO EXCEED 500
#270 22 55 PPM
.002 2 7
PLANTING SCHEDULE:
SYM.QTY.BOTANICAL NAME COMMON NAME SIZE REMARKS/SPACING
SHRUBS
CS 13 Cornus sericea 'Artic Fire'DWARF RED TWIG DOGWOOD #3 3' O.C.
ORNAMENTAL GRASS
BG 25 Bouteloua gracilis 'Blonde Ambition'BLUE GRAMA GRASS PLUGS 24" O.C.
SC 61 Schizachyrium scoparium 'Blaze'LITTLE BLUESTEM PUGS 18" O.C.
1 SHRUB PLANTING
SCALE: NTS
2 GRASS PLANTING
SCALE: NTS
SPACE SHRUBS AS
INDICATED ON PLANS
3" BARK MULCH
SET CROWN FLUSH
WITH TOP OF MULCH
PLANT GRASSES IN
CONTINUOUS BED OF
SPECIFIED PLANTING
SOIL
COMPACTED /
UNDISTURBED SUBGRADE
3" DEPTH SHREDDED BARK
MULCH; PULL AWAY FROM
ROOT FLARE.
CUT AND REMOVE BURLAP
FROM TOP 1/3 OF ROOT
BALL
PLANT SHRUBS IN CONTINUOUS
BED OF SPECIFIED PLANTING
SOIL
UNDISTURBED SUBGRADE
ROOT FLARE SHALL BEAR
SAME RELATIONSHIP TO
FINISH GRADE AS IT BORE
TO PREVIOUS EXISTING
GRADE
12" MIN18
"
M
I
N
6" MIN
12
"
M
I
N
1. PROVIDE INTEGRAL EMERGENCY BATTERY (14 WATT OR SIMILAR) FOR ALL FIXTURES WITH "E" EMERGENCY DESIGNATION
NOTES:
LIGHT FIXTURE SCHEDULE
TYPE MARK DESCRIPTION WATTS
(W)MANUFACTURER MODEL VOLTAGE MOUNTING SWITCH ID COMMENTS
X1 SURE-LITES EUX SERIES UNIVERSAL MOUNT 11 COOPER LIGHTING EUX7-1-R-WH MVOLT SURFACE AND
WALL
X2 Wavestream and 1-2 Light Squares 32 COOPER LIGHTING CCW LED UNV.SURFACE AND
WALL
X3 Wavestream and 1-2 Light Squares 32 COOPER LIGHTING CCW LED UNV.SURFACE AND
WALL
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