From Don Walker, of The Walker Associates. "The Contractor worked last Saturday to strip the topsoil on the west side of the spillway and to divert the Highway ditch water away from the work area.. He hauled any unusable material off-site on Monday and began grading and installing the "french" drain pipe and has completed this pipe installation minus a few feet necessary to tie into the new spillway apron. With installation of the subsurface drain pipe complete, the Contractor began grading the area between the toe of the Dam and the drain pipe for installation of the filter material. During this process, we encountered an area on the extreme west end of the work area that was too unstable to grade. Undercutting was necessary in this area (about 100' x 24') to remove organic material to a depth of about two (2) feet. It was necessary to install a reinforcing geo-grid in this area and to fill with clay gravel in order to provide a somewhat stable area to install the filter sands. The photos below show this area.
"As of the end of the day yesterday (Thursday), the area was ready for the filter sands to be installed. This will be accomplished today. The Contractor is planning on working tomorrow (Saturday) to continue installation of the filter sands and to also begin final grading of the area between the drain pipe and the Highway 98 ditch on the east side of the spillway so that the filter sand can be installed in that area.
"Next week, we anticipate final grading of both sides of the spillway with "capping" of the remaining filter sands with clay gravel and topsoil. If all goes well, the Contractor should begin the apron removal toward the end of next week.
"As you know, we have had to lower the North Lake level to accomplish this work and to lower the water pressure differential between the Lake level and the spillway apron grade to minimize the sand boil situation. Jonathan opened the valve last Saturday (May 2, 2015) in order to lower the level eventually to elevation 316.8 per the direction of the Ge0technical Engineer. We initially intended to accomplish this level in two (2) stages by lowering to the MDEQ level to finish the work on either side of the spillway and then to stop until the apron work was to begin. The Contractor is now about four (4) days ahead of his own schedule. Based on our monitoring of the speed of the drop in the Lake level and with the Contractor's expected apron schedule, we and Jonathan believe it is necessary to continue the Lake level drop until the desired level is met. Once we reach that level, the North Lake valve will be closed and Ski Lake valve will be opened. With the level of water in Stump Lake, we do not anticipate the level in Ski Lake dropping any lower than the initial drop that was set prior to this recent opening of North Lake.
"The work to date has been difficult with with decisions needing to be made and slight adjustments occurring on a daily basis. The Contractor is making efforts to move this project along as quickly as possible. I feel that he has done so, especially with the unstable conditions encountered. Again, we are monitoring the quantities on a daily basis."
April 13, 2015
Don Walker of The Walker Associates, the engineering firm overseeing the repairs of North Lake Dam, met with the contractor (R&J Construction) and MDOT Thursday, April 9, on-site to discuss options for placing a "coffer" dam on the upsteam side of MDOT's box culvert under Highway 98. They appear agreeable to work with the contractor in making this happen. The Contractor provided a sketch to MDOT to obtain this agreement.
The intent here is to place the "coffer" dam so that we can minimize the water level drop in Ski Lake. We have, however, run into an issue of the level of Stump Lake in relation to Ski Lake. As of April 9, both are now at or very near the same level. As such, water is not draining from Ski Lake. We still need to drop Ski Lake another 1 to 1 and 1/2 feet (it has only dropped about 1"-4" so far). This means that the Stump Lake valve has to be re-opened to allow Ski Lake to drop the needed amount. When the required drop is complete, we will still have about 2 feet of water in the box under Highway 98. Thus, the need for MDOT to approve the "coffer" dam. That is what The Walker Associates, R & J, and MDOT have been working on for to prevent a drastic drop in Ski Lake.
The board members were notified of the situation. The Stump Lake valve had to be opened. Once we get the additional 1 to 1 and 1/2 foot drop in Ski Lake, the valve can be closed. We will keep everyone informed when that happens.
March 25, 2015
The pipe liner for the Oak Grove Lake has been completed and the valve on Oak Grove Lake has been closed. The Stump Lake valve will remain open for a few more days and probably will be closed no later than Tuesday or Wednesday of next week to allow the final few days of repairs to the dam to be completed without any problems.
The North Lake valve will be opened today and the level will be taken back down to the mark on the tower. This is necessary to facilitate the repairs to the dam in the coming weeks. The Ski Lake Valve will be opened today and will be lowered approximately two feet. This is also to facilitate the repairs to the North Lake Dam in the coming weeks.
Not all have provided email addresses to the association, so please help spread the word to your neighbors about the coming lake level changes and the information provided here.
March 9, 2015
Oak Grove Lake Dam - The work on the spillway continues. Many of you have noticed that the Stump Lake level has been rising and then falling, etc. The reason for this is that Lake Serene POA has been waiting for the pipe between the Oak Grove Lake and Stump Lake to have the liner placed. If the water level is not kept low enough and there is water in the pipe, the work cannot be done. The original liner could not be accomplished as planned due to an obstruction in the pipe that was undetected on an earlier video. The plan then had to be modified and subcontracted out to another company who specializes in this type of work. We were told by the contractor that this would be accomplished in February and obviously, this has not happened. We were then told that the company that is doing the liner work would be in to video the pipe this week, the week of March 9, and then they would be back in town to do the actual lining of the pipe the week of March 23. Once the liner has been placed, the valve on Oak Grove Lake and Stump Lake can be closed. At a meeting of the board of directors held last Tuesday, March 3, the board voted to begin the process of assessing the penalties associated with going over the 100-day contract. The board feels that while some days can be justified, not all of the days can be, and now ask the contractor to provide written justification for each day over the December 23rd deadline. The penalty is $1000/day for each day over the deadline.
North Lake Dam - The North Lake Dam project has been awarded to R & J Construction. The contract will be formally signed very soon, and hopefully the work can begin soon thereafter. The type of work that has to be conducted on the North Lake Dam is extremely weather sensitive, so the contractor will need a block of good dry weather to get this work accomplished in a timely manner. It is hopeful that the North Lake level will not have to be brought down much lower than it is now in order to facilitate the repairs.
Assessment - As we are getting near to completion of the dam projects, if you have not paid your assessment, you are encouraged to do so as soon as possible.
January 15, 2015
Below are three diagrams from the North Lake Dam Project. These include:
There is also an aerial shot of the wet saturated areas below the dam to give a better perspective of the problem resulting from under seepage from the Lake.
The Walker Associates had a meeting in Jackson with the head of the MDEQ Dam Safety Division and his staff to review our proposed plans. The two-hour meeting went very well. They only offered minor suggestions which TWA will incorporate into the plans. The final plans along with the Application to Perform Work will be in MDEQ's hands the week of January 19. MDEQ indicated they should be able to immediately approve the work and send TWA an authorization to proceed. It is TWA's intent to have a contractor give a cost proposal to LSPOA by February 10, 2015. TWA believes the contractor can meet that schedule. If that occurs and the price is within budget, TWA should be able to present that to the LSPOA Board of Directors at the February board meeting.
The intent of this work is to "clean up" the wet areas below the dam and to install a filtered drain system blanket to minimize the movement of soil particles from under the dam (sand boils). We performed borings below the dam to identify the existing soil conditions and a topographic survey to identify ground elevations for use in regrading the site. The "North Lake Dam Project Work Area" drawing attached shows the extent of the area to be re-worked in blue. The aerial shows this same area as being the wet zones on both sides of the spillway. The extent of seepage can be easily seen in the aerial. This drawing also shows where we intend to install the underground drain system in pink or red. These underground drains will collect the subsurface water from the new filter blanket we will install and carry it to the stilling basin below the spillway apron. The "North Lake Dam Typical Proposed Subsurface Drain Systems" drawing attached shows how the drain system and the filter blanket will be constructed. Basically, the drain pipe conduit will be surrounded by fine "concrete" sand to help intercept migrating soil particles with a coarser gravel/stone material immediately encapsulating the pipe conduit to allow water to flow minus any potential soil particles. This fine "concrete" sand blanket will be installed in the full area shown in blue on the drawing to allow water movement from the base of the Dam to the underground drain. We will be filling the area to some extent and will be regrading the Highway 98 road ditch so that our work can properly drain. In addition, we are removing the spillway concrete apron and will install a new filter system below the apron. The blanket will be somewhat thicker but will be constructed in like manner to the other blanket described. A new concrete apron will then be installed with a new concrete rip-rap stilling basin between the new apron and the box culvert under Highway 98. The selected Contractor will also install small weir structures at the end of the subsurface drains to allow measurements of the subsurface flows. A piezometer will be installed in the sand blanket below the spillway with an outlet vertical pipe column to allow measurements of pressure by measuring depth of the water in the vertical column. This will help on future Dam inspections to identify and quantify what is happening below ground.
This is from an email received from Don Walker of The Walker Associates. It probably explains things better than I did yesterday. "The information below is sent to bring you to bring the LSPOA up to date on what has been discovered at the outlet pipe of Oak Grove Lake under Buccaneer Drive.
A leak has been found in the outlet/drain pipe under Buccaneer Drive that serves to drain Oak Grove Lake over time. This leak was evident at the end of the outlet of this structure where it empties into Stump Lake. The leak is flowing along this pipe between the old metal pipe and the outside of the new liner pipe. The question was why was this occurring and where was the leak originating. Now that the Lake has filled to a depth sufficient to develop some "head pressure", the leak began to show at the outlet in Stump Lake.
We were able to obtain the services of the Lamar County Emergency Management District personnel to assist in placing dye packs in Oak Grove Lake at specific locations to help determine where this leak was originating. The first thought was that the gate/sluice was not "seated" properly and that water could be entering at that point. We placed two (2) dye packs at this location one at the bottom of the sluice gate and one at the top. We then monitored this for "fluorescent green colored" flow through the pipe by observing the outlet at Stump Lake for over 1.5 hours. No dye came through at the outlet location between the metal pipe and outside of the liner. After a period of time and when we were satisfied that no dye was flowing from this location, we placed a dye pack over the drain pipe location in Oak Grove Lake between the concrete riser structure and the toe of the upstream embankment. Within about five (5) minutes or so the dye appeared at the outlet in Stump Lake. It is apparent that some defect has occurred in the exterior of the metal pipe in this general location that is allowing water to penetrate between the metal pipe and the outside of the new liner. Bear in mind that while this pipe was "lined" under Tanner's contract, it was installed in the late 60's several feet below grade and is not visible for inspection.
I have sent an e-mail this date to the Contractor and his liner pipe subcontractor making them aware of this situation and asking that they review the situation with us as soon as possible. However, due to the location of the leak, it is necessary to drain the Lake sufficiently to "see" the problem area and to properly seal the pipe and correct this problem. We do not make this recommendation of lowering the Lake lightly. We know and understand the patience that the Homeowners have given and the disappointment that lowering of the Lake will cause. However, this situation has to be corrected so that it does not create future issues with the area within the earthen embankment.
I will keep you informed as we obtain additional information from the Contractor and will advise as to the schedule for repairs. All efforts will be made to move this along as quickly as possible so that the process of filling the Lake can continue."
The 2016 Annual meeting of the Lake Serene Property Owners Association was held March 24, 2016. The dinner started at 6:30 p.m. and the meeting started at 7:00 p.m. at the clubhouse. Joe Simpson gave the invocation prior to the meal.
President Joe Simpson called the meeting to order. He thanked everyone for supporting the Lake Serene Property Owners Association. Joe introduced the board members and thanked them for their hard work during the 2015-2016 year. He also recognized any past board members that were present at the meeting and thanked them for their past work and support for Lake Serene.
Rob Doherty made a motion to skip the reading of the 2015 minutes in the interest of time. Matt Beavers seconded the motion and all were in favor.
Danny Rigel spoke to the group. He mentioned that they were in the process of trying to raise funds for trauma kits that were carried in the vest of each officer. These kits contain materials that can be used to save the officer’s life in case they are wounded in the line of duty. He went over what the kits contained and that the cost was $50 for a human kit and $35 for canine officer kits. He said they were about halfway to their goal and asked that if anyone were interested, they could give their donations to Lisa Jordan who would make sure Danny got them and applied them to the trauma kit drive. Danny said that there were several law enforcement officers that live in and just outside of the Lake Serene area and their presence of law enforcement was strong in our neighborhood. He said that Lamar County was the fastest growing county behind DeSoto County in Mississippi and that they have 42 deputies to cover our county. He encouraged neighborhood participation in crime prevention in our neighborhood. He also spoke about being a responsible pet owner and the dangers of dogs in the neighborhood, encouraging walkers and joggers to carry pepper spray when they leave the house. He also gave a warning about children driving golf carts through the neighborhood. He asked for questions and there were a few questions and concerns that Danny said he would address.
Joe Simpson gave the President’s report, outlining all of the accomplishments that Lake Serene POA had made during the previous year. He then recognized several individuals that had given of their time and money to do extra projects for Lake Serene. Joe gave an update on the LSPOA V Bush Construction lawsuit, stating that it looked like it would go to court sometime this fall. Joe then gave an overview of some of the unexpected expenses that have come up over the past year. He explained that these were unforeseen and caused a very tight budget in the coming year, especially with the Stump Lake drainage pipe/valve repair. Regarding the Stump Lake repair, the materials to be used to repair the pipe will not arrive until April 14. There were questions about the repairs, and Joe answered all of them to the best of his ability. He assured everyone that they are in constant contact with the contractor that is doing the repair as well as with Bruce Morgan to try to eliminate any unnecessary delays and hopefully have everything set up once the material arrives for the installation.
Pat Douglas gave the report of the Association’s financial activities for the year 2015-16. Pat pointed out that instead of being placed on the back of the Annual Report, the financial report is on a separate sheet, in the form of a Profit and Loss Statement. This is so that it can be broken down more and easier to read. Pat asked if there were any questions. There were none. Pat also stated that if there happen to be any questions at a later time, anyone could make an appointment or swing by the office with questions and they would be answered by her or by Lisa Jordan. Bobby Wilson made a motion made to accept the financial report, there was a second, and all approved the financial report.
Joe recognized the president of the Lake Serene Women’s Club, Donna Womack.
Larry Moore gave the election results. He stated that the election was very close and the new board members were going to be Warner Boortz, Peggy Moore, and Matt Beavers. He thanked all that ran for the board of directors.
There were questions about the maintenance of the new dam. Joe explained that we are still holding funds until Tanner Construction completed every item off the punch list and that they had been contacted, but had not responded to requests to finish these items. No funds will be released until all items are completed to LSPOA’s satisfaction.
Bill Schneider was introduced. He is interested in forming a Lake Serene Fishing Club. Lisa will distribute some information on this in the coming week.
Sid Gonsoulin asked if the monthly board meetings were open. They are. He was asked to be placed on the agenda if he has questions for the board of directors.
Patricia Brewer voiced some concern over the materials from the pier demolition that were now in the lake. Matt Beavers explained that he had planned on cleaning all of that up but the rain came and caused that to be delayed. He said he would get the debris out of the lake at the next possible time.
Bill Richardson asked Joe about the budget cuts for the coming year in order to help pay for the repairs to the Stump Lake, which are going to be paid for out of the general budget. Joe said that yes, there were going to be some budget cuts and the board was working on that now.
Mike Giles voiced appreciation to the law enforcement officers that helped get an old dog out of the muddy lake bed of Stump Lake. Blue, his wife, told the crowd to be careful about letting their children and teens roam around in the lake bed because the law enforcement officer could barely get himself out once in the lake bed because the mud sunk him up so far.
Jeff Devereaux wanted to make sure that the construction to prep for the installation of the pipe liner would be done prior to the arrival of the materials so there would not be further delay in the repair process. Joe said that he was in constant contact with the contractors and he would do his best to assure this was all done in a timely manner.
Larry explained the construction plan for the repairs to the pipe on Stump Lake in detail.
David McCullen thanked the board members for all of their work during the past year and encouraged the membership to try to remain positive when posting to social media about Lake Serene.
Door prizes were awarded as follows: Free Pavilion Rental went to Marilyn Bookout, free Clubhouse Rental went to Mike Mangum, and free Annual Dues went to Amber Edwards.
As there was no more business, concerns, or questions, a motion to adjourn the meeting was make, the motion was seconded. All were in favor.