| July 19, 2005
| We received a report from GEI about their observations at one of the three wells to which they had requested access. Because the information was inadequate to explain the wide fluctuations experienced at that well, and because the T chose not to monitor the other two wells, we anticipate installing level logging units in all three wells to develop our own data. |
| October 11, 2005
| The T has shared with the Trust as custodian for the working group data for its four pumping stations. We are working to analyze and understand the data and its implications for groundwater levels. |
| November 17, 2005
| The T agrees that the analysis of their pumping data indicates that the Follen Street pump station is activated by accumulation of water on a regular basis that appears to be weather independent. They will be attempting to identify the source of the water. |
| January 11, 2006
| The T has included $2.97 million for groundwater remediation work in their five year draft capital improvement plan. The bulk of the money would be spent in FY2008, with $60,000 earmarked for FY2007, presumably for planning. The projects to be pursued are not identified in the plan. I spoke at a public hearing on the CIP in favor of the allocation and thanked the T for moving to become part of the solution to the problem. |
| February 15, 2006
| The T has hired a consultant to work on groundwater issues. He has begun meeting with Jim Lambrechts and John Sullivan to discuss a coordinated solution to problems at the St. Charles Street area that would be funded by the supplemental state budget. The T has also committed an additional $2.97 million in their draft capital plan to address T related groundwater issues. |
| March 22, 2006
| The T has revealed a new portal location for the new Silver Line Phase III tunnel. They presented it to the Trust before it was made public. The new portal and tunnel location appears to be one at which groundwater problems can be minimized. We will continue to work with the T as this goes forward, paying particular attention to potential effects in the nearby Bay Village neighborhood. |
| April 27, 2006
| The T offered a detailed plan for a process to design the system to attempt to raise groundwater levels in the St. Charles St area. They have engaged Steve Poulos as their engineer to consult on the system; he has been tasked with offering ideas to a technical subcommittee of the Working Group by its next meeting in July. Mr. Poulos has begun his investigations and will be installing an additional monitoring well and doing geotechnical studies on Chandler Street near the MBTA structure to help in his studies. We will get the use of the new well after the T has completed using it. The T Board has approved the Capital Improvement Plan that includes $2.97 million for groundwater related work; the bulk of this money is scheduled to be spent in FY08, but they are trying to expedite some of the funds to allow work to proceed more quickly. |
| June 5, 2006
| The T held a meeting with the City, BWSC, Citywide GET, and the Trust on May 26 to discuss their plans for an interim solution in the St. Charles Street area while a permanent solution is under design. The interim solution would include two additional recharge wells that would also allow the T’s consultant to study water flows in the area and the ability of the ground to accept recharge. They are to reveal their thoughts on one or more permanent solutions before the next City-State Groundwater Working Group meeting on July 13. The Legislature’s conference committee is working on the Supplemental Budget for FY2006 and still likely to include $2,000,000 for the project, which the T has agreed will be in addition to the $2.97 million included for groundwater related issues in the T’s Capital Improvement Plan. There is still some discussion on the exact language to be included. |
| July 17, 2006
| The T has held several meetings about its proposal for increasing groundwater levels in the St. Charles Street area. They presented preliminary ideas to the City-State Groundwater Working Group on July 13. They plan to install two recharge wells as an interim solution that will also generate data to help them develop a long range solution. They expect to have defined their proposed solution by the fall. There will be a public meeting at the Renaissance School on July 25 at 6:00 to share the interim solution and longer range ideas with concerned stakeholders. |
| September 20, 2006
| The T has installed a new observation well on Chandler Street and has asked us to monitor several wells in the Back Bay Station area with data loggers. They also plan to manually read several of our other wells in the area at closer frequencies than we do. They hope to install their temporary recharge wells in October. There will be an update session on the project on Sept. 29. |
| October 26, 2006
| The T is attempting to get two recharge wells in the St. Charles Street area installed before the City’s winter construction moratorium. They plan to recommend a permanent solution to the T General Manager in March. The T will also be installing new groundwater observation wells in conjunction with the projects at Arlington and Copley Stations; I met with them last week to detail the location of the two new wells at Arlington. We will be filing comments on the latest environmental filing on Silver Line Phase III this week. |
| January 18, 2007
| We are monitoring the impact of the recharge wells that the T has installed at Cazenove and Berkeley Streets. As of our most recent readings, our data loggers show a significant increase in groundwater level only at the corner of Berkeley and Chandler Streets; however, John Sullivan told me that it took some time for levels to begin to rise after they installed the wells on St. Charles Street, so this may not be unusual. On another project, the T will install the required groundwater observation wells at agreed locations near the Arlington and Copley Station projects this spring. |
| February 15, 2007
| We continue to work with the T as part of their Action Team deciding how best to remedy the low groundwater problem in the St. Charles/Cazenove Street area. The recharge well at Berkeley Street appears to be having a positive impact on nearby observation wells; unfortunately, that has not yet been true for the recharge well on Cazenove Street. All parties are trying to figure out why. The Action Team is scheduled to recommend a long term solution to the MBTA’s General manager at the end of March. |
| March 22, 2007
| The Action Team for the T’s project to raise groundwater levels in the South End near Cazenove Street, of which we are a part, is trying to decide between two alternate means of addressing the problem. The Technical Advisory Committee of the City-State Groundwater Working Group will be assisting in this process. Both recharge wells installed by the T have raised nearby groundwater levels. The indication of a lack of increase on Cazenove Street turned out to be an instrumentation problem with our data logger which has been corrected. |
| April 23, 2007
| The Technical Advisory of the Working Group met with the MBTA, their consultants, and Jim Lambrechts to discuss the potential solutions to the low groundwater levels in the St. Charles/Cazenove/Chandler Street area. Concepts are being refined and repriced. We hope to reconvene soon to see what they have developed. |
| May 14, 2007
| The MBTA will be contracting with the Trust to install two additional observation wells very close to the Southwest Corridor structure on Cazenove and St. Charles Street. They want to use these to understand whether a significant groundwater flow extends along the structure or if the flow is primarily toward the area between Arlington and Berkeley Streets. This will help in deciding the best long term solution to install. |
| June 21, 2007
| We installed observation wells for the MBTA at the ends of St. Charles and Cazenove Street to help in the evaluation of alternatives for raising groundwater levels in the area. |
| August 2, 2007
| Recharge wells on Cazenove, St. Charles, and Berkeley Streets have been temporarily turned off to further evaluate groundwater flow patterns. They will be back on by mid-August. There is a meeting scheduled among Steve Poulos, Jim Lambrechts, and John Sullivan on August 29 to consider final recommendations for the long term project for raising groundwater levels in the area. This will be followed by meetings with the Technical Advisory Committee to the City-State Groundwater Working Group, the project Action Team, and the public. Final presentation of the recommendation to the MBTA General Manager should take place by October. |
| September 27, 2007
| The recharge wells on St. Charles, Cazenove, and Berkeley Streets were turned back on in August. Levels have substantially recovered to their prior condition. Steve Poulos, Jim Lambrechts, and John Sullivan have met to discuss how the data gathered through operation of the recharge systems impacts the best long term solution for raising groundwater levels in the area. After they reach agreement, the T will reconvene the Technical Advisory Committee to the City-State Groundwater Working Group to see if it concurs, then take the agreed solution to the Action Team, a public meeting, and to the General Manager for implementation. These steps should all be completed this fall. |
| October 25, 2007
| The engineers working on the long term solution to the low groundwater levels in the South End near Back Bay Station have reached consensus on an approach and are working on a letter report which the MBTA hopes to receive next week. They will then convene a joint meeting of the Action Team and the Technical Advisory Committee to the City-State Groundwater Working Group to make sure there is agreement. There will then be a public meeting to explain the solution. Both meetings are planned for November. The plan would then be presented to the MBTA General Manager, probably in December, for authorization to proceed to engineering. The T hopes to have construction under way by late summer 2008. |
| November 29, 2007
| The engineers have filed their letter recommending the steps to be taken for the long term solution to low groundwater levels in the area of the South End near Back Bay Station. The plan includes installation of a multipoint recharge system fed by the water currently being pumped away from the Follen Street Pump Station, along with design and cost estimate for a barrier wall cutting off groundwater flow heading toward the low point under the tracks near the end of Chandler Street. The barrier wall would be installed if the recharge system does not adequately raise groundwater levels in the designated zone. The proposal will soon be brought to a combined meeting of the Technical Advisory Committee to the City-State Groundwater Working Group and the project’s Action Team. If those groups concur, it will then be presented at a public meeting. This will be followed by a formal presentation to the MBTA’s General Manager. After his approval, a design engineer will be selected. |
| December 20, 2007
| The T convened a joint meeting of the Technical Advisory Committee of the City-State Groundwater Working Group and the Project Action Team to hear the recommendations of the engineers for a system designed to increase groundwater levels in the section of the South End near Back Bay Station. The recommended system consists of a series of recharge points to inject water that is currently being discharged from the Follen Street pump station. The design will also include an underground barrier wall along Berkeley and Chandler Streets that would prevent some of the flow of groundwater toward the MBTA tracks. The plan is for a public meeting to be held in January followed by a formal presentation of the plan to the General Manager for approval. Design and approvals would likely take all of 2008, with construction beginning in the spring of 2009. The underground wall would be bid as an add-alternative; depending upon bids received, it may not be constructed unless the recharge system doesn’t adequately raise groundwater levels. Still to be answered is how adequate levels of maintenance for the system will be assured. |
| January 31, 2008
| The T held a public meeting on January 30 to discuss the long term solution recommended for the section of the South End near Back Bay Station. This will include a recharge system using water presently pumped away from the Follen Street pumping station with full design of an underground barrier along Berkeley and Chandler Streets. The underground barrier will be bid as an add/alternate and will be installed if further study shows that it is necessary. Funding for the project comes from the MBTA capital budget as well as an appropriation from the Commonwealth sponsored by Speaker Sal DiMasi. The T also met with me to bring me up to date on Silver Line Phase III. They have installed five new observation wells near the projected portal route in Bay Village; we will begin reading them in our current round of observations. The SFEIR for the project will be filed late this summer with comments due in the fall. At the most optimistic, construction on the project, expected to take six years, would begin in 2010. |
| February 27, 2008
| The T has scheduled a March 25 meeting to formally present the proposed long term solution to the low groundwater levels in the section of the South End near Back Bay Station to General Manager Dan Grabauskas. This should be the final step before selection of an engineering firm to proceed with final design of the project. |
| March 27, 2008
| The Action Team met with General Manager Dan Grabauskas to formally present the long term plan for raising groundwater levels in the section of the South End near Back Bay Station. The meeting went very well, and the project will now move into the RFP stage for selection of the design engineer. The MBTA has set aside additional funds in the Capital Improvement Plan to assure that there is enough to complete the recharge system, as well as the underground wall if needed. There was also agreement on trying to set up a fund using the Commonwealth’s appropriation for attacking the problem to generate the funds needed to maintain the system over the long haul. Plans call for actual installation of the system in 2010. |
| April 29, 2008
| The MBTA is now in the designer selection stage for the long term solution to groundwater problems in the area of the South End near Back Bay Station. The T has committed to keeping BGwT and the other members of the Action Team involved as the project progresses. |
| May 29, 2008
| The MBTA has prepared a Request for Proposals for the designer for the Long Term Solution to low groundwater levels in the Back Bay Station area of the South End. They hope to have the designer under contract by the end of the summer. |
| June 27, 2008
| The Action Team, including BGwT, reviewed the request for proposals prepared by the MBTA to solicit designers for the Back Bay Station area groundwater improvement project. The proposals were due at the T today. The T plans to award the design contract after its September Board meeting. |
| July 31, 2008
| The T has shortlisted the bidders for the design work on the long term solution to groundwater problems in the South End in the vicinity of Back Bay Station and remains on schedule to award the design contract after their September Board meeting. The T, the Action Team, and the local State Representatives continue to work on assuring funds for proper long term maintenance of the systems to be installed. |
| August 29, 2008
| The T has shortlisted the bidders for the design work on the long term solution to groundwater problems in the South End in the vicinity of Back Bay Station and remains on schedule to award the design contract after their September Board meeting. |
| September 25, 2008
| I met with the T to discuss in more detail their plans for Silver Line Phase III and information that they will be preparing to update the public on groundwater related issues. We also discussed the potential for recharging the seepage water that would otherwise be discharged to the BWSC sewer system. |
| October 27, 2008
| The MBTA will have an inspection, which we will attend, to try to determine the reason for recently dropping water levels on Cazenove Street where they continue to inject water through their recharge well. The well has been purged of silt buildups twice; the reason for the buildups is not completely clear. The T has named GEI as the designer of the Long Term Solution for the groundwater depression near Back Bay Station in the South End. Final contract award and commencement of design should happen later this Fall. |
| November 20, 2008
| We met with the MBTA and their consultant at Cazenove Street last week. The recharge well was putting approximately 7.5 gallons per minute into the ground. Unfortunately, that water was being rapidly withdrawn and levels were at a low point. The withdrawal may be related to underpinning work underway at a location nearby. This project is to be completed in December, and we will continue to have data loggers in the wells on Cazenove Street that we will monitor closely to see if the levels increase. I appreciate the cooperation of the T in trying to inderstand the problem. |
| December 18, 2008
| The reduction in groundwater levels on Cazenove and St. Charles Strets seems to have largely ended with the completion of dewatering for a building repair on Cazenove Street. Since the water being removed was being recharged elsewhere on the site, we will need to think more about the implications for temporary recharge during construction dewatering elsewhere. Design work on the long term solution for the Back Bay Station area should be getting into high gear shortly. |
| January 29, 2009
| The MBTA has encountered an unexpected technical issue on the long term solution to low groundwater in the Back Bay Station area in the South End. The need to agree on whether there is an appropriate location for a storage tank or whether they will need to use a pumped system instead of gravity feed has held up final contract signing for the engineer. This is expected to be resolved shortly, with a signing by the March board meeting. |
| March 2, 2009
| The MBTA is working with the City, the Commonwealth, and the Trust to direct the state’s money for the effort to raise groundwater levels in the area near Back Bay Station to provide a segregated maintenance to assure that the long term solution will be maintained in proper working condition. |
| March 26, 2009
| The MBTA has sent a letter to the Commonwealth requesting that the $2,000,000 in state funds for construction of a potential solution to low groundwater levels near Back Bay Station be redirected to a maintenance fund for the long term solution to be installed by the T. Both Jim Hunt and I signed the letter, indicating our agreement. |
| April 29, 2009
| The MBTA has been working on finalizing the design parameters for the system they will be installing to raise groundwater levels in the South End near Back Bay Station. They have decided to use a gravity fed recharge system with multiple tanks located adjacent to the Follen Street pumping station. Still to be resolved are potential freezing and maintenance issues. Because of cost, they are no longer planning to include design of a potential underground wall along Berkeley and Chandler Streets that would serve to slow groundwater flow out of the project area. |
| May 28, 2009
| The MBTA continues design work on the long term solution for the area of the South End near Back Bay Station. Transfer of the allocated state funds from construction to creation of a maintenance fund for the installation, agreed to in concept by both the City and the BGwT, will require a legislative correction. The T should soon be installing a replacement well for the one that was destroyed during work on Boylston Street across from Copley Square. |
| June 29, 2009
| The MBTA has resumed work along Dartmouth St north of Boylston at Copley Station. They will be replacing the observation well that was destroyed during construction of the emergency exit in front of CVS. Discussions continue on the long term solution to low groundwater levels near Back Bay Station. |
| July 30, 2009
| I attended a stakeholders meeting with the T general manager to update the short and long range plans for raising groundwater levels in the South End near Back Bay Station. Because groundwater levels on Cazenove Street have stayed consistently below El 5 despite the current recharge well there, the T will work with BWSC to increase the flow and, if necessary, add a second recharge well. The T will be assigning engineering of the long term solution to a general engineering firm with which they have an existing contract. This will be for the system to capture and reuse the water pumped at Follen Street. We will have a further update in about six weeks. The MBTA has resumed work along Dartmouth St north of Boylston at Copley Station. They have pledged to resume reporting groundwater levels at the wells near the site. They will be replacing the observation well that was destroyed during construction of the emergency exit in front of CVS. |
| August 26, 2009
| After the recent change in senior management, the MBTA reconfirmed its commitment to the short and long term solutions to the low groundwater levels in the South End near Back Bay Station. |
| September 24, 2009
| The T has identified a location for a second recharge well on Cazenove Street. The existing recharge does not appear to be operating properly, with the well overflowing while levels at the nearby observation wells are dropping. |
| October 27, 2009
| The T expects to install the second recharge well on Cazenove Street within the next few weeks. They remain committed to getting the short term fix working properly again and to the implementation of the long term solution involving recharge from the Follen Street Pumping Station. The T has also resumed substantial work on Copley Station near Old South Church. They have installed a series of recharge wells in case they need to dewater for the elevator installation. The T will not be using jet grout technology near either the church or the Boston Public Library. |
| November 19, 2009
| The T will be installing the additional recharge well on Cazenove Street this week. |
| December 21, 2009
| The T has installed an additional recharge well on Cazenove Street. They are continuing to fine tune its performance, but initial readings indicate a significant increase in groundwater levels on Cazenove St and some increase on St Charles St. |
| January 21, 2010
| The T is trying to determine the cause of a reduction in groundwater level at their Copley Station construction site in front of the Boston Public Library. The level at an observation well monitored by their contractor has dropped below 3 BCB. |
| February 12, 2010
| The T reported that the low groundwater levels observed in the well in front of the Boston Public Library are caused by dewatering related to the installation of an elevator for handicapped access to the Copley Station. Measurements taken subsequent to the Working Group meeting indicate that the groundwater levels in the well remain very low. The T also reported that the second recharge well on Cazenove Street is operational. Unfortunately, our most recent readings, taken this week, indicate that groundwater levels on Cazenove Street remain below what is required to protect pilings. |
| March 18, 2010
| The most recent readings on Cazenove Street indicate a recovery to the highest levels seen in some months, although still somewhat below what is required to assure the protection of wood pilings along that street. The low groundwater levels along Boylston Street in front of the Boston Public Library, associated with the construction project at Copley Station, continue. The work still requires dewatering which appears to be the cause of the drawdown. |
| April 16, 2010
| The MBTA is changing its approach to the long term solution for the area around St. Charles and Cazenove Street. Rather than recycle the water pumped at Follen Street, they now believe that they can repair the leak near Back Bay Station. They have issued an RFP for a consultant to design tunnel repairs at multiple locations in the system and will include the potential repair of the leaks near Back bay Station. Working Group members as well as other interested parties at the session were encouraged by this change of approach. Construction is likely a year away, and the existing recharge will remain during that period. |
| May 20, 2010
| On April 29, I met with Rich Davey, the new General Manager of the T, and members of his staff. The meeting was primarily devoted to a discussion of the new approach planned to raising groundwater levels in the South End near Back Bay Station. The T will be engaging a new consultant to design multiple tunnel repair projects, high on the list of which is repairing the leak that has led to low groundwater problems in the area. The consultant is likely to be under contract in October. They will then determine the feasibility of the new approach. The T believes that the new approach may be less costly to install and eliminate long term maintenance issues. The short term solution of continuous recharge will remain in place until a longer term solution is complete. The T is planning a public meeting in June to discuss the changed approach. |
| June 18, 2010
| On June 16 the MBTA held a public meeting to discuss the revised plan for raising groundwater levels in the area of the South End near Back Bay Station. Rather then a recirculation system to recharge the water being pumped away from the Southwest Corridor through the Follen Street pumping station, the T now plans to essentially plug the leak by constructing an underground barrier on T property eliminating the path that groundwater takes to the track drain system. This work will be done as a high priority portion of a tunnel leak repair contract that will cover most of the T’s underground structures. The request for quotations for the engineering firm is currently out for bid with responses due in July. The T hopes to have the design contract awarded in October and work commencing next summer. The Trust and other members of the project review team will play an active role in assuring that we are all comfortable with the design as it goes forward. |
| July 29, 2010
| The MBTA continues to go forward with plans for the long term solution for low groundwater issues in the South End in the vicinity of Back Bay Station. They received letters of interest from six engineering firms for the tunnel rehabilitation project that includes the groundwater related work on July 14. They expect to complete the selection process and award a contract by September. Because the groundwater related work is one of the first items to be completed under the contract, they expect construction could start by Spring 2011. On another project, the T has completed all dewatering associated with the elevator installations for Copley Station; groundwater levels appear to be returning to normal. |
| September 16, 2010
| The MBTA continues to go forward with plans for the long term solution for low groundwater issues in the South End in the vicinity of Back Bay Station. They received letters of interest from six engineering firms for the tunnel rehabilitation project that includes the groundwater related work on July 14. They expect to complete the selection process and award a contract by September. Because the groundwater related work is one of the first items to be completed under the contract, they expect construction could start by Spring 2011. |
| October 19, 2010
| The MBTA continues to go forward with plans for the long term solution for low groundwater issues in the South End in the vicinity of Back Bay Station. They received letters of interest from six engineering firms for the tunnel rehabilitation project that includes the groundwater related work on July 14. Construction work on the Copley Station project, for which dewatering ended several months ago, is expected to be completed this month. |
| November 18, 2010
| The MBTA hopes to have an engineering team for their Tunnel Repair Project, which prominently includes the long term solution for the low groundwater levels near Back Bay Station in the South End, selected by the end of November. Investigation and design work is expected to take 6-8 months after the engineering contract is awarded. |
| December 17, 2010
| The MBTA has selected an engineering team led by GZA for their tunnel repair project, which prominently includes the long term solution for the low groundwater levels near Back Bay Station in the South End. Investigation and design work is expected to take 6-8 months after the engineering contract is awarded. |
| January 27, 2011
| The MBTA is negotiating terms and conditions with GZA for their tunnel repair design contract. They hope that the contract, for in which one of the earliest projects is design of the long term solution for low groundwater in the area near Back Bay Station, will be signed and the engineer given authorization to proceed by April. The plan remains to focus on repairing the leak rather than making up water. |
| March 24, 2011
| The MBTA remains in final negotiations with GZA for their tunnel repair design contract that includes the work on the long term solution for the low groundwater levels in the South End near Back Bay Station. They expect to have signed a contract by mid-April. |
| April 29, 2011
| The MBTA was unable to have a representative at the Working Group session. They are expected to file a written update shortly. They had anticipated signing the design contract for their tunnel repair project that includes the long term plan for raising groundwater levels in the South End near Back Bay Station during April. |
| May 26, 2011
| The design contract for the Tunnel Repair Project that includes the work to design the long term solution to low groundwater problems in the South End near Back Bay Station is currently being reviewed in the MBTA Legal Department. It will then go to the General Manager and the MBTA Board for approval. |
| June 23, 2011
| The MBTA yesterday gave GZA Environmental authorization to proceed on the Tunnel Repair design contract. Design of the long term solution for low groundwater levels in the South End near Back Bay Station will be one of the first items to be addressed. |
| July 21, 2011
| The MBTA has given GZA Environmental authorization to proceed on the Tunnel Repair design contract. Design of the long term solution for low groundwater levels in the South End near Back Bay Station will be one of the first items to be addressed. |
| August 29, 2011
| The MBTA has kicked off the design work on the Tunnel Repair contract led by GZA Environmental, with early focus on the project to raise groundwater levels in the section of the South End near Back Bay Station. Along with Peter Shilland, our trustee representing the Ellis Neighborhood Association, and Technical and Recharge Coordinator Christian Simonelli, I met with representatives of the T and GZA to go over previous efforts undertaken to understand and solve the problem. It was a very good session that lasted almost two hours; I’m looking forward to working with them as we all try to overcome this long standing low groundwater problem. |
| September 22, 2011
| We continue to provide information to GZA as they proceed with their design work for the MBTA. In addition to their work on the long term solution to low groundwater levels near Back Bay Station in the South End, they will be looking into the possibility that the low groundwater levels near Breman and Porter Streets in East Boston might be MBTA related. |
| October 28, 2011
| The MBTA’s consultant for the Tunnel Repair Project, which includes efforts to raise groundwater levels bear Back Bay Station, has been in an intensive data gathering and analysis stage. Among other efforts, they have traced and measured the flows in drain lines from the Southwest Corridor, evaluated the amount of recharge from the continuous makeup on St. Charles, Cazenove, and Berkeley Streets, developed cross-sections showing the different elevations of the trackbeds and Turnpike, and studied the nature of the fill in different areas. Next steps are expected to include installation of additional groundwater observation wells (to be coordinated with BGwT), development of a digital groundwater model, inspection of the low level elevator pits at 95 Berkeley St, a walking inspection of the Turnpike drain line in the area, and a potential television inspection of the drain line that runs to the Follen Street pumping station. The plan is to have findings in the January-February period, with a final report and recommendations by March-April. Design and construction would follow. |
| November 17, 2011
| The MBTA has adjusted the flow at the recharge wells on Cazenove Street because the well was overflowing into the street. This had happened previously when there was only one recharge well on that street, and the second well was added to even out the flow and reduce mounding. The T’s consultant will be trying to determine the cause of the overflow (at a substantially lower flow rate than is used on St. Charles Street) as part of their design work on a long term solution. |
| December 19, 2011
| Jim Lambrechts of our Technical Advisory Committee, Christian, and I met with the T’s consultants to review their progress on studies that are to lead to a long term plan for addressing low groundwater levels in the South End near Back Bay Station. They have developed a lot of information about the likely causes of low groundwater levels and are hoping to add a few more pieces before developing plans to address the problem. |
| January 19, 2012
| Jim Lambrechts of our Technical Advisory Committee, Christian, and I met with the T’s consultants to review their progress on studies that are to lead to a long term plan for addressing low groundwater levels in the South End near Back Bay Station. They have developed a lot of information about the likely causes of low groundwater levels and are hoping to add a few more pieces before developing plans to address the problem. |
