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Going through my old e-mails, just wanted to make
sure this one doesn't get lost.
----- Original Message -----
From: Peggy Groppo
Sent: Wednesday, August 08, 2001 7:55 PM
Subject: Last night's planning board mtg Horsley & Whitten proposed the
following:
1. A watermain serving the subdivision will be
built during construction of the roadway that will be available when water
service is extended to the neighborhood.
2. Individual water service connections between the
watermain and the house will be built for each home developed prior to the
availability of public water.
3. Any home using a private well will immediately
switch to using public water once it is made available.
4. Private wells will not be used on lots 1, 2, 3,
19, or 20 until the impacts of water withdrawals on the remaining lots have been
evaluated in the manner described below. This will provide a buffer of
approximately 400 feet between private wells in the subdivision and adjacent
properties. A well can be installed on these lots for monitoring purposes prior
to house construction on the lot.
5. The private well will be installed first on any
lot proposed for construction. In asddition, a monitoring well will be
installed on the adjacent lot uphill (to the south) of the lot proposed
for development. The monitoring well can be constructed to act in the future as
a private well for its particular lot. To the extent possible, it should be
drilled to a similar depth as the proposed private well on the downhill
(northern) lot.
6. The proposed private well will be pumped at the
maximum feasible rate for a minimum of four hours. Water level readings are to
be taken in the private well and the monitoring well prior to the pump test,
every half hour during the test and for two hours following the test (in order
to evaluate water level recovery following the test).
7. The well will be accepted for use
if:
sufficient yield is produced to
supply the demands of the proposed dwelling. The Board of Health, through its
agent, will determine if sufficient yield is available in the same manner it
evaluates other private wells in Framingham, and
the change in water level in the
adjacent monitoring well is less than 20% of the total available water
column.
8. If the water level change is greater than 20% in
the monitoring well, than both wells will be pumped simultaneously, according to
the approach described in item #6 above. If sufficient yield is available in
both wells, then the private well will be accepted for use, provided the quality
of water pumped by the well meets the Board of Health requirements. If
sufficient yield is not available in both wells, an alternative site for one of
the wells must be selected and tested.
9. As additional private wells are constructed, the
pump test for those wells must include measurements of water levels in any
private well or monitoring well on adjacent lots according to the measurement
protocol in item #6. For each pump test, however, there shall always be one
monitoring well on the adjacent, uphill lot.
10. To minimize water usage during peak summer
periods, lawns associated with lots using private wells will be restricted to a
maximum of 7,000 sq. ft. This restrictuion will be removed when public water is
extended to the subdivision.
11. Homeowners will be encouraged to utilize their
private wells for landscape irrigation after public water is extended to the
subdivision, to minimize the demand on the town's water supply.
Peter Baril of GZA Geoenvironmental recommended the
following be considered:
1. Conduct a limited boring program (e.g. 4 to 6
borings) to provide some subsurface information as to the depth of overburden
materials, soil description/classification, description of bedrock, and depth to
static water table. Borings would be used as test wells for subsequent pump
testing and groundwater sampling.
2. Conduct short-duration pumping tests on the test
wells. This will provide some measure of the specific yield from each well and,
potentially, the influence of the pumping wells on the surrounding water table,
as measure from the other test wells. The current Board of Health regulations
governing private and semi-public water supplies does not provide a specific
pumping test procedure. Thus, the Board opf Health Agent will establish the
testing procedure, consistent with standard practice. As an alternative we
recommend that the current DEP policies for public bedrock water supplies (1996)
be used as a guide in developing pumping test priocedures for the
project.
3. Water quality testing should be conducted at
each of the test wells during pumping conditions. Chemical analysis will be
performed in accordance with Framingham Board of REgulations, Section 3
(B)(3).
At the time of the Definitive Subdivision plan
submissions, and as a condition to the Special Permit, GZA further recommends
that the applicant provide a plan and written explanation as to how the site
would be stabilized to prevent erosion and sedimentation, in the event that
after the subdivision roadway and utilities are constructed, it is discovered
that the individual bedrock wells are not feasible and the installation of the
municipal water system is delayed. A practical means of stabilization should be
developed for disturbed land area on the site.
GZA's main concern is that the land should be
tested prior to putting in a road. Franchi doesn't want to do that, he says it
is his risk as to whether he won't be able to build, and it would be over $100K
if he did it GZA's way. There was also a concern voiced by the board that the
betterment is being stalled and may not be available for quite a
while.
Franchi basically said if you don't give me
permission to do the definitive plan, then I may discard the whole cluster plan
and go back to the original one. This appeared to sway Larry and Sue, as they
were the two that were most amenable to GZA's recommendation. (I say, let him go
ahead -- the planning board may not be able to control the wells, but he then
has all the other problems with connecting to Brimstone, Sudbury, wetlands, etc.
-- he doesn't stand a chance that way, and he knows it.)
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