 case anybody needs it. And just remind everyone to please remain muted during the presentation. We've just got a handful of slides here and we can answer questions at the end. Probably the easiest way to handle that. And we can take all the questions. You can also at any time post those questions in the chat box for the Webex. It's at the bottom of your screen, I believe. You can put those in there if you want. It may help as we go through the presentation. And of course we're recording it so we can share it later and put it out on the web city website as needed. So welcome everyone to our meeting for this Carol and Maramac Stormgrain Rehabilitation Project. My name is Mike Grincholl. I'm the project manager. I also have Jane Widmer is helping me with this. And so you've probably received emails from her. We've coordinated with several folks around this area before the meeting, excuse me, as we've worked on the project. So that's our purpose tonight and we'll run through kind of everything we've planned to do and then some details on different parts of the project and work that'll be done and have any questions there at the end. We'll wait till the end if you could and if you want to put them in the chat too. So on the call with us of course is myself and Jane as well as Justin Naylor heading up the program with Linda Young at the city and we'll be happy. Between us all I think we can get any questions that may come up answered. So we'll go ahead to the next slide. So the Stormgrain program on a rehabilitation program I want to mention a little bit is of course as we know the older parts of the city are reaching triple digits. Some of them certainly getting very close if not over that now. And so in order to one of the programs the city has to keep these aging systems functioning optimally is to do some maintaining and in times that's rehabilitating the lining in these pipes and we'll show you that pictures here in just a minute and so to prolong their service and we based that on several factors that are considered. The age of the pipe of course historical events throughout the known history of them and the condition and that's prioritized. They do a closed circuit TV of the inside of the pipes and that's reviewed and cracks or protrusions or failures etc. are discovered those are ranked and that helps with the prioritization based on the review of those defects in the pipe and that helps us decide which pipes are eligible for rehabilitation. And the goal of this is of course to keep the existing system running optimally and that part of it for this project is we're using some trenchless technology so meaning we don't have to go dig up the streets and it's minimal disturbance at the surface and so tonight or what we'll talk about that we're doing here for fifth and and Carolyn Merrimack is actually two different applications of that pipe rehabilitation one is called cured in place pipe and the other is a geo polymer spray applied liner that we got a little picture to show you of each of those so just a little background on what this is doing and some of the extents and we have a map to show that as well but just to describe it is between of course fifth street that's essentially a now not a street that portion is actually part of Montgomery Plaza and the retail there but it's still our pipe in the city's pipe in a drainage easement and that portion runs from Carol through the Montgomery Plaza to the railroads to the east the other portion is Merrimack Street and the portion of between Merrimack down Carol to fifth and as you can see there's and these illustrations here on the left just kind of showing you what the closed circuit TV picks up from that analysis of the pipe that over time as development happens and people have attached their other storm drains to the city storm drain pipe over time you can see how these protrusions and pipes that have been added in later have various defects and so that's just illustrating that so we trim and seal those connections and there's an additional lining that's put in to protect the surface inside surface of the pipe and to keep the soil around the pipe from coming in through those joints where the pipe was put together originally as well as to fix any defects and that basically is the idea of extending the service life of the pipe and so we're doing a couple of methods for this these two segments of pipe the one on the left is the cast in place basically it's like a new pipe inside of the old pipe that they clean it first and inspect it and then through a process they pull this plastic liner in and trim around the other pipe connections and it creates an entire new surface inside of an existing pipe essentially and that's going down Merrimack and Carroll and we'll look at that in a minute on a map the other application we're doing along the Fifth Street corridor is the spray applied liner that's a large arch pipe that was a main trunk line for that system and it was in good shape just had some cracking around the surface of it and then some intrusions and so this is a little more intensive but they spray of apply this liner inside that large arch pipe so just a quick map may arise we're all 7th Street Montgomery Plaza of course the 5th Street portion it runs through Montgomery Plaza from Carroll East to the railroad tracks the rest of it the Merrimack and Carroll piece just north of there so we will look at those here in more detail in Merrimack this is a storm drain that runs basically adjacent to the church there and their parking lot and from Mercedes down to Carroll and then from Carroll from Merrimack down Carroll to 5th and that'll be this cast in place essentially the new liner inside the pipe to rehabilitate that piece that segment of the pipe and they work via the manholes so where there's an existing manhole near the intersection of Mercedes and Merrimack to the manhole that is near Carroll and Merrimack and then they work from the manhole at Carroll and Merrimack to the manhole that is at 5th and Carroll so they have to take that in steps it's a 30 inch storm drain line there so it's it's fairly small so the cast in place pipe works well in that situation the next segment is much larger and it's a actually a large arch pipe large enough for us to walk through it and that runs from the manhole in Carroll to all the way back behind Montgomery Plaza and we highlighted the Chick-fil-A and the Wells Fargo banks you kind of have an orientation of where you're at here and then all the way to the railroad track just before the railroad track right away their property and that'll be the spray applied liner portion and that portion we actually added a manhole some of you might remember a few months back we had a portion of this area excavated to construct a manhole there was no manhole between these two ends and to do this work we needed to add a manhole and so that could that has been done and that construction is complete and that's just adjacent to the drive-through of the Wells Fargo bank their banking drive-through right there so that's done and constructed and that was again we needed that manhole for our city crews normal typical maintenance and operations as well as for this project so that new manhole is constructed and in place so they will be able to do this spray applied liner between those two locations okay some more details the vortex lining systems one the bid for construction they're doing the two different types of of storm drain rehabilitation the cast-in-place plastic a cast-in-place pipe as well as the spray applied liner on those two segments there will be temporary so they will be working at those manholes as we noted in the in the street so there will will be some disruption at least for a lane during that time when they're set up at those given manholes and so right now we have construction tentatively starting Monday and the 22nd it'll take we have a total contract time of four to five months total for both of these types of work the work will not be going on during that entire time so they have several processes they have to initially set up at the manholes and do a thorough cleaning the pipe obviously to pull the new liner in has to be very clean they will have a time for doing repairs then they will come back and do the process of actually pulling the liner and so there will be multiple stages or processes but for the contract purposes because we have these this whole area under one contract we have a total time to get this done of roughly four to five months and they are in either city easements in the case of the area behind Montgomery Plaza and or temporary construction easements in or the city of course the street right away city right away for those so I know the area has is very busy obviously very popular area and so this is coming early in in our program because it was a high need there's another rehab program project that is starting up on 7th closer to downtown and so these these high priority areas we're trying to get to very quickly in this program and so there will be some again some temporary lane closures there will be so you'll see the the cones or the barricade or the flaggers etc. their different traffic control measures that they'll use there we're not anticipating closing any of the roads only a lane so it'll be a shift in the lanes and we at this time we're confident we can keep both lanes open for traffic if temporarily during maybe moving of equipment etc. they might have a flagger to to help move things around but the the thinking is that we'll be able to both lanes will remain open for traffic it'll just be of course the typical construction inconvenience but hopefully it won't it will be done very quickly the construction area to ease that in the Montgomery Plaza area we went and got additional construction temporary access areas from the the retail folks that own that area and to to be able to have a place to to work from and not and causes little disruption to minimize potentially minimize our impacts anyways in that in the Montgomery Plaza area so being very sensitive to that so that is the project and the schedule a few folks to you know of course myself Mike and Shaw Jane is on as well this call our construction inspector for the city is Sergio and we also have our contractor superintendent for the job Jacob next and that's all the presentation we can dive deeper in any of that and I can open it up for questions at this time kind of the best way so there's not total chaos on a meeting is I'll start with the call-in user because I don't see a name on that but we'll go through and go call on people if they have any questions if you don't you can just stay muted but if you do have a question now's the time and we can I'll start with the call-in user three I don't have a name so if you have any questions and would like to unmute yourself then you can do that at this time or if you don't have any questions you don't have to unmute yourself it's always a little interesting on the WebEx sometimes when it comes to questions all right it looks like and if you do you can unmute and we can skip around I think there's another just going down the list here sorry Joe someone logged in as Joe if you have any questions you can unmute yourself can you hear me Mike yes yeah great great hey yeah I'm actually in the Linwood development area it's where I live I know from the explanation there you talked about the liner it's going to be placed in to the pipes and I'm trying to get kind of a bearing an idea and you may be able to answer this may not I recall a few months back you guys were doing some work on Foch and 7th and we had some larger pipes that were being placed there if you were a part of that project can you explain what that was and how different it is compared to the one you're working on now so another part of our team was doing that and we have CCTV'd several miles of this older line and what we found was some of those were in dire need of what they call point repairs in other words they like had a collapse or a cave-in or we were afraid there was a void under the pavement and we had another incident unfortunately that made headline news with somebody's very nice car dipped down in a you know I actually saw that yeah then so those those were what we call point repairs where we had to go in and and dig around and excavate refill that void repair the pipe refill that void and then replace the pavement on top and so those those were our top priority and we were able to get to those as quickly as we could in fact we have an on-call contractor that lets us rather than go into the lengthy bid process we can just literally give them work orders and they can go fix those so that's probably what that was very good and from an understanding and I mentioned larger but was there a change in the circumference of that pipe that was replaced or wasn't the same size was placed there yeah that there was no change they they just repair you know to keep it keep it operational and just repairs and that's that's the the main focus of the storm drain rehab program the there's a larger process going on that Justin Naylor is managing he's actually on the call but that is looking at doing a and now a consideration of could you know this pipe be larger or that pipe be larger or an ad a pipe or you know those kinds of system-wide enhancements whereas our our program on this on the rehab is just keep what we've got functioning the way it should be functioning and you know safely is there an oppression Mike that what you're putting in together that to keep it functioning and safer is there also an expectation that it may show some improvements in parts of the flow of water well it it will maybe maybe not appreciably you know if a system is is is undersized but part of the benefit that we do get is in some of these areas where you go back a few slides here where these protrusions or debris or dislocated joints and things like that may have been causing the system to be slightly less efficient we're definitely getting that back kind of like you know rebuilding the engine in the car it's not necessarily a different car but it definitely will run better and kind of like it was intended to so that that's kind of the the extent of the storm drain rehab program just to keep it working the larger system-wide parts of that is a different analysis understood and that's that was kind of it you know obviously I'm a few blocks to the west I'm on Templeton and my biggest concern of course is the fact that I'm one of the lowest-lying spots in the neighborhood and I've been a part of the continual issues we've been having related to the heavy rainfall yes yes and that you know work is being done on that as well kind of simultaneously to see what can be done for that area and then you know how to fund it and all that and I think Justin is leading that effort but and there's other you know other meetings that they'll be they'll be conducting as well and understood I didn't want to monopolize I just was curious about that just to provide a quick update on that this is just the mailer of the the engineering contract is scheduled to go to Marin Council on May 23rd but in order to the funding to fund that large contract won't be available until June but in order to kind of expedite getting started on the on that work we're working on a jumpstart contract with the same engineer and so that we can start evaluating all the flood mitigation needs and coming up with conceptual plan for the area so we are working on that I figured you'd probably be interested to hear that definitely I appreciate the time Justin and Mike as well and you know you know this is again you kind of within that this project is within that storm drain rehab program which is really kind of if one of the focuses is life safety you know in the event that the storm drain were to fail and kind of create a large void on the surface that's what we're trying to avoid or that's what we're trying to prevent here proactively understood yeah I'm looking forward to the new storm drains that they're going to actually install but we've been watching during that heavier rainfall and the excessive water that's come in there from the storm tending to shoot up these storm drain covers rather high in the air thank you Joe we'll see we'll just keep going down the list here sorry this is Laura oh yeah I interrupt you there is a question in the chat I don't know if you know I didn't see that would like me to read those if they come up yeah would you sure will there be any closings of parking spaces by chick filet so I know where that is that's off the right around target yes so no we have a area closer to the railroad tracks so it's pretty good ways away from chick filet we have another area that's closer to chicken salad chick that we have worked with Susan at Kimco and thank you Susan she's on she we worked with her team to get the temporary construction easements so that's all something the contractor has it is supposedly used but it won't it'll be a ways away from chick filet and the bank actually let me see there's one there's a going down the list here on the screen Mackie right you have any questions maybe if not this is Laura again and I have another question in the chat this is from Norma have there been any studies to ensure that the pipes that are already being repaired are adequate to evade the flooding issues so there's two efforts that's a good question there's two efforts going on simultaneously as Justin said this effort is to keep our existing system working and Justin just spoke to that study and that engineering that's a take about to start that will do that analysis so there there's two parallel tracks going on one we have to keep what we got up and running and that's what this project will do and then he is he is working on the the other aspect of that to look at the in this the system system-wide look to see what can be done and how to fund it so and that was Norma's question thank you Norma let me go to the list before we get to the back to the chat Laura Scott Smith I see you're logged in you have any questions no okay all right there is a part two from Norma if you would like okay what about taking Merrimack down to one lane it is difficult to get down Merrimack as it is now yes so we are we will be temporarily of course we need one lane to get into the manhole and work while the work's going on because it's trenchless we don't necessarily anticipate having to close the lane they will be temporarily down so yes that is unavoidable for that port you know for during the times when when we have to do that and it will be so that the contractor has traffic control of course plans and a whole set of details and things that they'll have to follow to to make that safe when it is but and and some of that will be just during the work is the goal so I don't mean to wrap but this is Norma and coming down Merrimack there are cars parked on both sides of Merrimack 100% of the time what will be done to ensure that if we reside on Merrimack that we will be able to get through the contractor will stake a claim to some of those spots on on Merrimack he'll have to there at the manhole at Mercedes near the entrance to the parking lot that's on the north side of the church there so I would say he would be in where some of those cars are parked if they're parked there all the time but not additional if that makes sense so he'll be on the north side of the road at that location that I just described kind of right there there's a Mercedes but there's also a driveway going into the church parking lot right there on Merrimack anything else Lars anything else in the chat I think you got your answer Norma I know you had a second part about a repair needing to be replaced I was just concerned that we're spending this money to do this repair and that there's another study going on to try to alleviate all the flooding issues in Linwood so I just wanted to be sure that I heard correctly that the money being spent on this doesn't lead to the next study saying well all this has to be replaced for larger pipes yeah and it's a little bit of chicken and egg Justin I can fight it out and we put on boxing gloves actually and literally fight it out but theoretically we would still need this system and I think his analysis is looking more west of here at the portion of the system this is Justin again and so currently the concept that we're going to be evaluating her early swindlers is going to be looking at a system in university that would potentially take more runoff towards the north as opposed to kind of letting it come towards the east which would reduce the amount of runoff in this existing system but again what we're pretty early on so the concepts that we have are fairly vague and need to be fleshed out so this is something that you know the existing system is something that we're going to be considerate of you know some options if we did wind up needed to add additional capacity down Merrimack and Carroll could be potentially doing a parallel system that to avoid replacing the the pipe that we just rehabbed you know so those are some potential ideas that were that we're going to be evaluating with our with our engineer normal did that kind of thank you okay well I'll open it up to see if anyone else can raise their hand or speak up if you had questions comments let me go back to the sorry clicking around here go back to our contacts you want to jot down email addresses you can and of course the city inspector he'll be boots on the ground during during the work so Sergio great to work with and he'll be like I said he'll be a good contact Norma if you see something going on during construction please reach out to me or Sergio and since you you guys live down there and of course there will be for Joe there will be other public meetings and points of contact I know that Jennifer Dyke and Justin Naylor have with with you know that the other the larger flooding issues to the west of here so there'll be more in fact you might get sick of us after a little while I get sick yeah no Jennifer's been a great help and making sure the information is getting out I appreciate it that's like this is Jane I would suggest that people just take a snapshot of these this contact information just in case something comes up or your questions or concerns you can reach out to us thank you yes that's a great idea well thank you all for joining us this evening and again this is recorded so be able to refer back to it if we need to but we're looking forward to getting contractor started going to work and making sure these these parts of the system are functioning at optimum and if you have any questions you can contact any of us I don't have anything else all the we can leave the meeting open here for a few minutes but otherwise I think that concludes it for this evening thank you Mike and Justin and Jane appreciate you yes thank you thank you all for joining us