HomeMy WebLinkAbout2013-09-03 Planning Board Supplemental Materials (9) pORT#1
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1600 Osgood Street
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TO: Planning Board
FROM: Judy Tymon, Town Planner
RE: Planning Board Meeting August 20, 2013
DATE: August 16, 2013
Folks,
I will not be at the Planning Board meeting—as you can see by my empty chair if you are reading this as
the meeting begins. There are two postponements and several items on the agenda:
POSTPONEMENTS:
0 Great Pond Road. This application has been heard once by the Planning Board and once by the ZBA.
The ZBA requested that soil tests be taken before they give their decision. The applicant will dig one test
pit and will present those findings to the ZBA at their meeting on September 10. If the ZBA approves the
variance, they will be on our agenda on September 17. They have addressed most of Lisa's issues with
the exception of landscaping. If they present a landscape plan that meets the Board's approval, I can have
a decision ready for your vote at the September 17 meeting—assuming, of course, that no additional
issues are raised.
102 Peters St. The application is also postponed until September 4. Our traffic consultant should have a
report ready for the September 4 meeting.
AGENDA ITEMS
1077 Osgood St.Butcher Boy Bank. First, a quick summary:
• TRAFFIC: All of the traffic issues have been addressed. We are waiting for the
Fire Department to review the turning analysis plan.
• CIVIL: Most of the Civil Review issues have been addressed with the minor
exception of#6. (see below)
• STORMWATER: The current design has improved. It includes a compensatory
re-charge area outside of Zone A. The plan includes taking two catch-basins off-
line, replacing them with deep sump hooded structures and directing the flow into
an underground pre-treatment area. It provides a net improvement for the entire
site by reducing the amount of untreated runoff leaving the site.
• There are also a few issues still to be resolved. They have proposed what is known as
a `proprietary' stormwater treatment device (a Contech Stormfilter unit),which is
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unacceptable according to DEP, especially since this site is considered a "Land Use
with Higher Potential Pollutant Loads ( LUHPPL) and it discharges to a Critical
Area —the Lake. The alternative is for them to consider LID techniques to provide
pre-treatment, such as a LINED bio-retention system. Also, the diversion manholes
on Sheet 11 show the inlet, outlet and overflow pipes all at the same elevation, which
means that anything above a 1 year storm would simply overflow and none of the
solids would be able to be separated. Overflow pipes are usually at least a foot
above the inlet pipe.
Traffic: The following issues have been addressed with the August 2, 2013 submittal:
I. The aisle width between the ATM structure and the edge of the retaining wall looks very
tight— the concern is that there is not enough room for a fire truck to maneuver around a
vehicle situated at the ATM. The applicant has agreed to provide a truck turning analysis
and the location of the teller/ATM structure is of concern.
The distance between the ATM and the retaining wall is approximately 24 feet and
should afford sufficient distance for a fire truck to by-pass a vehicle stopped at the
ATM. The turning analysis has shown that a WB-40 truck can circulate within the
project with no problems. The Fire Department has not yet provided their review
2. It appears that a queue at the teller/ATM of at least two cars may block the parking spots to
the right of the teller/ATM. Can you provide more information regarding the queuing and
parking in that area?
The projected queue in the ATM lane is expected to be 1 vehicle on average and 2
vehicles maximum. On those occasions when the queue is 2 vehicles (in frequent based
on the projections), vehicles parked in the easternmost parking spaces (2) proximate to
the ATM lane may have difficulty exiting. As such, it is suggested three (3) parking
spaces at the end of the row of parking, opposite the drive-through teller facility should
be designated as employee parking.
3. The existing driveway has a wide curve as it enters the parking lot and there is no stop
sign. The proposed entrance would end at a 90% angle and would have a STOP sign. How
will that affect the flow of traffic and will it cause traffic to back-up on to Osgood St.? The
concern is that a new STOP sign, plus traffic exiting the bank parking lot and the new angle
of the entrance driveway will cause some issues.
The peer reviewer suggests removing the STOP-sign for entering traffic as it is not
necessary to control traffic at the intersection and will ensure that entering traffic
proceeds unimpeded into the site. The latest version of the plans eliminated the STOP
sign.
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4. Vehicles backing out of the accessible parking spots will be entering the entrance aisle for
the bank. Will that cause problems? The basic concern is that the configuration of the
parking lot and locations of aisles and the building itself will result in traffic backing up on to
Osgood St. Especially during peak traffic times on a daily basis and during peak seasonal
traffic.
While the reviewer agrees that it would be best to move the accessible spaces further
from the entrance to the back, the combination of. i) driveway width entering the
Butcher Boy Marketplace (25 feet approaching the bank driveway); ii) the relatively
low traffic volumes associated with the bank; and iii) the low travel speeds entering the
bank driveway given the 90 degree angle of the driveway intersection; do not appear to
indicate that vehicles exiting the subject parking spaces will materially impact the flow
of traffic entering the Butcher Boy Marketplace. Vehicles entering the bank site will
likely be positioned closer to the southern curbline allowing vehicles continuing east to
enter the Butcher Boy Marketplace to maneuver to the north to pass a slower turning
vehicle or a vehicle that may be delayed momentarily to enter the bank site.
5. What are the plans for delivery/loading trucks:
A Loading/delivery dock is not necessary. Deliveries are made to the site via passenger
vehicle.
Civil: The following issues have addressed with the August 2, 2013 submittal:
1. Zoning Compliance: The existing conditions plan has been revised to show 12 existing
parking spaces in the rear of the building. The applicant has provided a parking table for the
existing lot that shows that parking is compliant with current zoning. The parking for the
new bank building also complies with current zoning. No remaining issues.
2. Landscaping: The applicant has provided a Landscape Plan with a list of proposed plants,
stamped by a licensed Landscape architect. The landscaped island is now 6.5 ft. wide and
has a tree planted very 30 ft. No remaining issues.
3. Construction Entrance: The construction entrance has been revised so that the edge
perpendicular to the direction of travel connects directly to existing pavement. No remaining
issues.
4. Entrance Road: The entrance road is 16 ft. wide at its narrowest point, which conforms to
zoning for a one-way drive. No remaining issues.
5. Retaining Wall: The applicant states that the wall will be designed as to not to interfere with
the proposed detention system. Also, a note has been added to the plan stating that the
contractor is responsible for repairing any possible damages to the existing sewer main. No
remaining issues.
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6. Water and sewer services are shown on the plan. The size and materials for these services
must also be shown. Also gas, electrical and communications services must be shown.
Stormwater Design Issues: The following issues have been addressed with the August 2,
2013 submittal:
1. A proprietary BMP (Contech Stormfilter) is being proposed for treating water quality
volume. DEP does not allow proprietary systems for site that is considered a"Land Use with
Higher Potential Pollutant Loads" (LUHPPL) and it discharges to a Critical Area—the Lake.
The alternative is for them to consider LID techniques, to provide pre-treatment, such as a
LINED bio-retention system.
2. The HYDROCAD analysis should account for splitting of flows through the water quality
structures. It should be shown how the water volume is going to be effectively diverted
through the treatment structures and the water quality structures. The size of the overflow
lines should be identified. Also, the overflow weirs are shown to be between .36 and 3.6
inches high. More height is needed to avoid water simply passing through the system
without allowing solids to settle. The overflow pipe is usually located 12 inches higher than
the inlet pipe.
3. The roof drains can be directly discharged into the sub-surface drainage structures.
4. Compensatory recharge is provided for the increase in impervious are. An underground
infiltration system will provide pre-treatment outside of Zone A.
5. The bank has asked if coated metal roofing can be used. DEP prohibits uncoated galvanized
metal roofs and the applicant should research this particular roof and talk with DEP to
determine if this type of roof is acceptable.
6. There are a number of Operation & Maintenance Plan issues that need to be addressed that
are listed in Lisa's report.
Brooks School—Waiver of Watershed Special Permit
Brook School is proposing to move an existing transformer, located at the rear of the boathouse,
adjacent to the docks, to a safer location away from the Lake. The proposed location is
approximately 200 ft. from the Lake and 50 ft. from the wetlands. As you can see from the
photo, the transformer is located at the rear of the boathouse building. The aerial shot shows the
new location (in RED, 50 ft. from the wetlands in BLUE and 200 ft. from the Lake). The aerial
view also shows the trench that will be dug. The Brooks property line is in YELLOW.
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In order to relocate the transformer, a new electrical line will have to be installed. There is an
existing underground high voltage line and Brooks will be replacing that line with the required
voltage line for the transformer.
The line will be placed in the trench, which will require soil disturbance but no re-grading is
required and nor will trees or vegetation be removed. The existing lawn will be removed and the
area will be re-seeded The work is proposed to take approximately 10 days and sedimentation
controls will be in place throughout the duration of the project.
Brooks has filed with the Conservation Commission (Small Project, RDA) which requires
notification to abutters. They will be heard at the August 28, 2013 Conservation Commission
meeting.
The School is requesting a waiver from section 4.136.c.ii.2. Special Permit required for
"Vegetation removal or cutting"within the Non-Disturbance Zone.
Next meeting is September 3, 2013!
Judy
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