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20230815 Late CorrespondenceHonorable Mayor and City council, RECEIVED FROM ~~:::f..-~LUK.:IU ANO . MADE A PART OF THE RECORD AT TH ; COUNCIL MEETING OF 'a/1 <;/ 2? . ~. OFFICE OF THE CITY CLERK No"'-CITY CLERK My name is Casey Carbone!. I am a Rancho Palos Verdes local. I went to St. John Fisher, and then PV High School. I am here today to talk about a safety issue in our local neighborhood. I grew up on Avenida Esplendida, first in house #1, diagramed below, and when I was 4 years old, moved to house #2. When I moved to house #2, my best friend, and later best man at my wedding, moved into my old house. We traveled to each other's houses thousands of times over the years, both on foot, and by bicycle, and I'm here to tell you that the crossing of this particular intersection was perilous. Currently it is only a two way stop, as shown below, and there is a blind curve just below the intersection. We would have to listen for cars, and th e n run acros s the street as fast as we could, because even at 25mph, cars would come around the curve and be in the intersection in 2 or 3 seconds. Now today, with all the teslas and electric vehicles, it is impossible to listen for the cars approaching . I understand there may be a proposal to put a temporary traffic circle here, however if you've ever crossed a traffic circle on foot, it is confusing for the drivers and dangerous for the pedestrians. I now have two little boys, and they will be crossing this intersection many times in their lives. I believe the only way for them to stay safe, is for the city counsel to turn this intersection into a 4- way stop . It would be much easier, safer, and cost effective than building a traffic circle . Thank you for your consideration, Casey U) J +, 0 -t:, I ( I Q._ ( 0 c+ r V) From: Teresa Takaoka Sent: Tuesday, August 15, 2023 7:56 PM To: CityClerk Subject: Fw: FW: 7-11-2023 Site Review Klondike Canyon Landslide Distress in Seaview Tract Attachments: Dauntless-Exultant Water Main Break_IMG_3911.MOV; Klondike Canyon (Landslide) Water Main Break_IMG_3705.MOV; 1982_STK Pub. - Land stability in the Klondike Canyon Area.pdf Late corr Teresa Takaoka City Clerk terit@rpvca.gov Phone - (310) 544-5217 Address: 30940 Hawthorne Blvd. Rancho Palos Verdes, CA 90275 Website: www.rpvca.gov This e-mail message contains information belonging to the City of Rancho Palos Verdes, which may be privileged, confidential, and/or protected from disclosure. The information is intended only for use of the individual or entity named. Unauthorized dissemination, distribution, or copying is strictly prohibited. If you received this email in error, or are not an intended recipient, please notify the sender immediately. Thank you for your assistance and cooperation. From: Gordon Leon <gordon.leon@gmail.com> Sent: Tuesday, August 15, 2023 6:56 PM To: CC <CC@rpvca.gov> Subject: Fwd: FW: 7-11-2023 Site Review Klondike Canyon Landslide Distress in Seaview Tract EXTERNAL EMAIL: Do not click links or open any attachments unless you recognize the sender and know the content is safe!!!. For tonights council meeting ---------- Forwarded message --------- From: Kerwin, Scott <scott.kerwin@wsp.com> Date: Tue, Aug 15, 2023 at 4:20 PM Subject: FW: 7-11-2023 Site Review Klondike Canyon Landslide Distress in Seaview Tract To: aram@rpvca.gov <AraM@rpvca.gov> Cc: Steve Cummins (SCummins@dcacivileng.com) <SCummins@dcacivileng.com>, Gordon Leon <gordon.leon@gmail.com>, Michael Barth <michael@barthlaw.com> Ara, I just got a call from Gordon Leon re: a proposal from Hout Construction Services for a monitoring program for the Portuguese Bend area that is on the agenda for the City council meeting tonight. Gordon has read through the portions of the staff report and wanted to let me know that among many other things, it includes a subsurface 3 & 4 exploration program for the Seaview area. Robert Stone & Associates (Dr. Perry Ehlig) completed a similar exploration program of the of the Seaview area for the City of RPV in 1979-80, in conjunction with concurrent investigations of the Klondike Landslide in the surrounding area by 3 other companies (66 exploratory borings, 14 exploratory trenches, 4 inclinometers, etc.; refer to the attached 1982 publication). Additional subsurface exploration proposed by Hout in the Seaview area would, therefore, be a redundant waste of the City’s funds, and Hout should instead make good use of the original 1979-80 Robert Stone & Associates reports/subsurface exploration logs, which are available in the City’s files. As the Klondike Canyon GHAD’s engineering geologic representative, I suggest that I meet with the City’s representatives/Hout to update them on the available information before allocating any funds for additional subsurface exploration. Installation on an inclinometer in the beach area in the vicinity of the existing KCGHAD dewatering well would, however, provide useful information regarding the stability conditions of the Klondike Canyon Landslide area. I am hoping that part of that Hout’s proposed monitoring program does not include replacing/interrupting the excellent, GPS survey monitoring work that is currently being performed by McGee Surveying Consulting. Their survey results to date provide an invaluable resource for understanding the magnitude, direction and rate of slow creeping movement of both the Klondike Canyon and Abalone Cove landslides. Thanks, Scott Scott T. Kerwin Senior Associate Engineering Geologist PG CEG M: (714) 240-5456 scott.kerwin@wsp.com WSP USA Environment & Infrastructure, Inc. 3560 Hyland Avenue, Suite 100 Costa Mesa, California, 92626 USA wsp.com From: Kerwin, Scott Sent: Thursday, July 13, 2023 9:11 PM To: Steve Cummins <scummins@dcacivileng.com> Cc: Michael Barth <michael@barthlaw.com> Subject: 7-11-2023 Site Review Klondike Canyon Landslide Distress in Seaview Tract Steve, I had a good look around the subject portion of the Seaview Tract to review and photograph each of the ground deformation/pavement cracking areas attributed to the Klondike Canyon Landslide in 1980. I have attached a copy of my publication from 1982 re: the Klondike Canyon Landslide that includes a geologic map showing the location of these distress features. Unfortunately, the map, and also the paper are very “geologic”, so it may be of limited use for most people. The primary takeaway from this is that the areas of landslide distress/ground deformation features are at the same location they were more than 40 years ago, and very slow, creeping movement of the landslide has likely been occurring since it was first recognized in 1980. I am guessing there is probably at least a couple of feet of old pavement between the two cracks that form the “graben” (down-dropped tension zone) at the head of the slide beneath the intersection of Dauntless and Exultant. I did some comparisons of my photos from 4/26, 6/13 and 7/11/2023, and the only area of noticeable change is in the vicinity of Dauntless and Exultant. The magnitude of change and associated deformation is greatest right at the intersection and appears decrease both laterally and seaward from that location. There doesn’t appear to be any noticeable change in the previously mapped pavement cracking areas further seaward along Dauntless, along Admirable, and along the frontage road for PVDS. With the possible exception of the tension cracks on Dauntless down the street from the intersection, these other areas of pavement cracking attributed to the landslide are relatively subtle, so you need to know what you are looking for. During my review I had some discussion with Don Schmid, who lives in the house on the north side of the intersection (4361 Dauntless). He is apparently the one who has reported each of the several water main breaks in the area to Cal Water (5 total: two in relatively quick succession near the corners on the southerly side; two adjacent to Klondike Canyon in the offsite area behind the homes; and apparently the most recent break, again on the southerly side of the intersection). Don was nice enough to send me some videos of the flow from the broken mains, but I was only able to get copies of two of the videos to play, and they are attached. On 7/11, the magnitude of settlement in the graben area at the intersection had probably doubled since my last review about a month ago, and the City has closed the roads at the intersection. While I was there, the City’s representatives were making preparations to video the sewer line in that area. The vacant house at the southerly corner of the intersection has been red-tagged. The two areas of cracks in the exterior wall of the house along Exultant that I have previously photographed appear to have increased a bit since 4/26/2023, but not as dramatically as you would expect from the condition of the nearby roadway. The majority of the ground deformation in the pavement at the intersection can likely be attributed to saturation and associated hydro- compression of the earth materials comprising the graben/tension zone beneath/near the intersection as a result of the water main breaks. Similar effects may have also occurred in the vicinity of the water main breaks near Klondike Canyon. In general, the local rate of slide movement appears to have accelerated in response to the recent heavy seasonal rainfall, but observed displacements outside the area of the Dauntless/Exultant intersection (i.e., areas not affected by the water main breaks) are consistent with the history of the landslide movement over the previous 40+ years. Comparisons using the GPS monitoring measurements in October-November will provide hard data re: the rate and distribution of the ground movement in the slide area. Please contact me if you have any questions or comments. Scott From: Steve Cummins <scummins@dcacivileng.com> Sent: Tuesday, July 11, 2023 9:28 AM To: 'PB Club' <office@pbcbeachclub.com>; Kerwin, Scott <scott.kerwin@wsp.com> Cc: Michael Barth <michael@barthlaw.com> Subject: RE: PIcs Hi Scott, If you’re going to be looking at the PBC issue then please also swing by the Dauntless intersection. The Water Company appears to have gotten the water line breaks taken care of but the intersection is a disaster at this point. Steve Steve Cummins, P.E. President / CEO DCA Civil Engineering Group, Inc., SBE, LSBE 17625 Crenshaw Blvd., Suite 300 Torrance, CA 90504-3495 310/327-0018 Telephone 949/753-8100 310/327-0175 FAX E-Mail: scummins@dcacivileng.com http://www.dcacivileng.com ************************************************************************************************************************************* ********************************************** The information transmitted and any files attached herewith are intended only for the person or entity to which it is addressed and may contain confidential, proprietary and/or privileged material. Any unauthorized use, distribution, copying or disclosure of this communication is prohibited. If you have received this electronic transmission in error, please notify the sender immediately by replying to the address listed in the “From:” field, delete the original message including the attachments and destroy all hard copies. The electronic transfer of design data has an inherent risk of providing defective or erroneous information. Errors may occur in creation, formatting, transmission and translation. Use of the provided electronic information is for your convenience and may be used at your risk. You shall be solely responsible for verifying the validity and correctness of the electronic information against appropriate hard copy. Viruses: Although we have taken steps to ensure that this e-mail and its attachments are free from viruses, we advise that in keeping with good computing practice, the recipient should ensure they are actually virus free. ************************************************************************************************************************************* ********************************************** From: PB Club <office@pbcbeachclub.com> Sent: Monday, July 10, 2023 1:50 PM To: Kerwin, Scott T <scott.kerwin@wsp.com> Cc: Michael Barth <michael@barthlaw.com>; Steve Cummins <scummins@dcacivileng.com> Subject: PIcs Scott See below pics forgot to include. Erica Llanos, CMCA General Manager Portuguese Bend Beach Club 4100 Palos Verdes Drive South Rancho Palos Verdes, CA 90275 310.377.3667 fax: 310.541.2426 office@pbcbeachclub.com The information transmitted and any files attached herewith are intended only for the person or entity to which it is addressed and may contain confidential, proprietary and/or privileged material. Any unauthorized use, distribution, copying or disclosure of this communication is prohibited. If you have received this electronic transmission in error, please notify the sender immediately by replying to the address listed in the “From:” field, delete the original message including the attachments and destroy all hard copies. From: erica LL <llanoserica@yahoo.com> Sent: Monday, July 10, 2023 1:48 PM To: PB Club <office@pbcbeachclub.com> Subject: Movement Erica NOTICE: This communication and any attachments ("this message") may contain information which is privileged, confidential, proprietary or otherwise subject to restricted disclosure under applicable law. This message is for the sole use of the intended recipient(s). Any unauthorized use, disclosure, viewing, copying, alteration, dissemination or distribution of, or reliance on, this message is strictly prohibited. If you have received this message in error, or you are not an authorized or intended recipient, please notify the sender immediately by replying to this message, delete this message and all copies from your e-mail system and destroy any printed copies. -- Gordon Leon 310-463-9244 TO: HONORABLE MAYOR & CITY COUNCIL MEMBERS FROM: CITY CLERK DATE: AUGUST 15, 2023 SUBJECT: ADDITIONS/REVISIONS AND AMENDMENTS TO AGENDA _____________________________________________________________________ Attached are revisions/additions and/or amendments to the agenda material presented for tonight’s meeting. Item No. Description of Material Non-Agenda Email from Jeff Cameron D Email from Gary Palmer 3 Email from Noel Park; Email exchange between City Manager Mihranian and Noel Park 6 Updates from Staff and Fact Sheet ** PLEASE NOTE: Materials attached after the color page(s) were submitted through Monday, August 14, 2023**. Respectfully submitted, _______________ Teresa Takaoka L:\LATE CORRESPONDENCE\2023\2023 Coversheets\20230815 additions revisions to agenda.docx 1 Non-Agenda Subject:FW: Los Verdes Golf Course Netting Attachments:Support of Los Verdes Netting.docx From: Jeff Cameron <capt.jeffcameron@yahoo.com> Sent: Tuesday, August 15, 2023 1:50 PM To: CityClerk <CityClerk@rpvca.gov> Subject: Los Verdes Golf Course Netting EXTERNAL EMAIL: Do not click links or open any attachments unless you recognize the sender and know the content is safe!!!. Please provide the attachment to the Mayor and City Council tonight (non-agenda item). Thank you. Jeff Cameron President La Cresta Pointe Homeowners Association August 15, 2023 Dear Mayor and Members of the City Council, Subject: Los Verdes Golf Course Netting Please take a moment to fully understand the issues and years of frustration with Los Verdes Golf Course that has led up to the installation of the netting at the golf course. When La Cresta Pointe homes were completed and occupied in 1988 we began noticing errant golf balls hitting our roofs and landing in our yards, the street and breaking our windows. Over the course of the past few years the problem has accelerated. A master bathroom window was shattered with a golf ball landing in the bathtub on two separate occasions. Thankfully no one was bathing at the time! Small children playing in the front yard were almost hit by one. A ball whizzed past the eye of someone collecting their mail. There are numerous other major events and incidents, cited regarding safety and damage. We’ve had hundreds of clay roof tiles damaged and replaced regularly. Our homes are not visible from the golf course. Our HOA has spent years trying to simply resolve the issue of golfers taking INTENTIONAL golf shots at our properties. Signs have been posted on the fences and golf carts. Los Verdes designated a Marshall to conduct extra patrol to take special interest in this area. We’ve called various times when an event occurs to an unanswered phone at the golf course. It has taken the last two and a half years of investigation by the City and the County to understand and agree that this is a SAFETY and preservation of property issue. City representatives have been on-site and personally seen and collected errant golf balls from our properties (yards, street, hillsides). Since the citizens who chose to golf at Los Verdes also chose to behave poorly in spite of reasonable signage and warnings, we must now protect ourselves with netting. Please understand the years of time, alternative strategies and continued damage that occurred before this became the final solution. The netting is the last resort for a final solution to eliminating a public safety problem in our neighborhood. Regards, La Cresta Pointe HOA 1 D. Subject:FW: I support the city position of opposition to Assembly Bill (AB) No. 309 From: Ara Mihranian <AraM@rpvca.gov> Sent: Tuesday, August 15, 2023 1:13 PM To: Gary Palmer <GARY@getmymail.org>; CC <CC@rpvca.gov> Subject: RE: I support the city position of opposition to Assembly Bill (AB) No. 309 Hi Gary, Thank you for taking the time to share your thoughts regarding tonight’s agenda item on AB 309. The City Council is in receipt of your email and it will be provided to the Council as late correspondence. Ara From: Gary Palmer <GARY@getmymail.org> Sent: Tuesday, August 15, 2023 12:04 PM To: CC <CC@rpvca.gov> Subject: I support the city position of opposition to Assembly Bill (AB) No. 309 EXTERNAL EMAIL: Do not click links or open any attachments unless you recognize the sender and know the content is safe!!!. I want to register my support for the city council to oppose AB No. 309 the Social Housing Act and accept the staff recommendation. I agree with the city staff analysis that 309 would remove local control over land use. One of the cornerstones of life in RPV is the open space and local land use control. Thank you, Gary Palmer ‐ Resident Rue Langlois I receive many notices from the city and request that I not be added to additional email lists, including council member personal lists. 1 3 Subject:FW: August 15, 2023 Council meeting. Agenda Item #3 Portuguese Bend landslide ‐‐‐‐‐Original Message‐‐‐‐‐ From: Noel Park <noelparkone@gmail.com> Sent: Friday, August 11, 2023 3:33 PM To: CC <CC@rpvca.gov>; Ara Mihranian <AraM@rpvca.gov>; Ramzi Awwad <rawwad@rpvca.gov> Subject: August 15, 2023 Council meeƟng. Agenda Item #3 Portuguese Bend landslide EXTERNAL EMAIL: Do not click links or open any aƩachments unless you recognize the sender and know the content is safe!!!. I have carefully reviewed this agenda item and the accompanying staff report. I also aƩended the recent stake holder meeƟng at City Hall. I had long planned to aƩend your August 15 Council meeƟng as I believe that face to face interacƟon is the most effecƟve. Alas, health issues have taken a hand and I will be unable to aƩend. I hope that this message will be the next best thing. There have been some reports that certain City officials believe that “environmentalists” are trying to block the project. In my personal experience, nothing could be further from the truth. i have read a number of the comment leƩers and spoken to many of the “environmentalists” involved and no on has said to me that the project should not be done. There is deep concern about negaƟve impacts on protected Coast Sage Scrub (CSS) habitat and the wildlife that relies on it. There is deep concern about several of the proposed construcƟon details which many believe could lead to potenƟal failures of the project. CiƟzens want these issues addressed before the project moves forward. At a previous Council meeƟng I strongly urged Council members to read all of the submiƩed comment leƩers for themselves. In that way you will get a sense of the hearƞelt concerns that ciƟzens have worked so hard to express. I have no doubt that you will see many relevant and valuable suggesƟons. You may be very likely to instruct your staff to study these issues as part of due diligence to try to avoid negaƟve project outcomes. At the recent stakeholder meeƟng, Councilman Bradley, Councilman Cruikshank, Mr. Mihranian and Mr.Awwad all menƟoned that the Council had directed that engagement with the stakeholders should conƟnue as the process of answering the quesƟons raised in comment leƩers proceeds. This was very encouraging as I have said over and over that such an interacƟve process stands an excellent chance of achieving a compromise consensus which will allow the project to proceed smoothly. It was parƟcularly encouraging that staff intended a robust series of meeƟngs with the Palos Verdes Peninsula Land Conservancy staff to work on habitat issues. As you know, I have been strongly advocaƟng for this from the beginning. It was encouraging to see the comment about the approval of the overall EIR not prevenƟng staging of various components of the project. This could answer a lot of the comments about the staging of the hydraugers versus the surface drainage features. And other issues as well. John Speilman, a member of the IMAC, is also a Board member of our HOA. At our last meeƟng he reported to us on a meeƟng with the proposed lead engineer for the project design effort you are considering Tuesday. John found him to be a very pracƟcal and work wise engineer. He seemed very open to the idea of project phasing to achieve the best results. So that is encouraging as well. Finally, I want to comment on one aspect of the staff report which I ﬁnd extremely troubling and personally offensive. That is the discussion of the amount of CSS habitat which the City is allowed to destroy, apparently without miƟgaƟon, 2 under the NCCP. As I said at the recent meeƟng’ “take” is a four leƩer word to me. We constantly brag about our “semi rural paradise” and the 1500+ acres of open space we have preserved. As such, we have a duty to be good stewards and protect that space. In addiƟon to the Nature Preserve, I refer to any property owned by the City between the Preserve boundary and the ocean which contains much mature CSS and other even rarer plants. To bulldoze many acres of this habitat and not replant it on a robust enough basis to assure restoraƟon is a sin in my opinion. It is the worst possible way to save money. Please do not allow this to happen. Again, I have come to believe that, if we conƟnue on a construcƟve and interacƟve path, we can make CEQA history. A consensus, compromise driven, EIR would avoid ugly community confrontaƟon and be something of which we could all be very proud for years to come. Sincerely, Noel Park 6715 El Rodeo Road Rancho Palos Verdes CA 90275 562‐413‐5157 Sent from my iPhones 1 3 Subject:FW: Landslide emergency repairs/maintenance From: Noel Park <noelparkone@gmail.com> Sent: Tuesday, August 15, 2023 4:03 PM To: Ara Mihranian <AraM@rpvca.gov> Cc: CC <CC@rpvca.gov>; Ramzi Awwad <rawwad@rpvca.gov>; Ron Dragoo <RonD@rpvca.gov> Subject: Re: Landslide emergency repairs/maintenance EXTERNAL EMAIL: Do not click links or open any attachments unless you recognize the sender and know the content is safe!!!. Thank you Ara for your courtesy, as always. I truly believe that everyone’s hope is that we can work together for a successful project Best regards to all, Noel Park Sent from my iPhone On Aug 15, 2023, at 3:43 PM, Ara Mihranian <AraM@rpvca.gov> wrote: Noel, Thank you for taking the time to provide the City Council with your thoughts on tonight’s agenda item related to the Portuguese Bend Landslide Remediation project. It’s greatly appreciated and your suggestions will be considered. Both your emails are part of the record and will be provided to the City Council. Ara Ara Michael Mihranian City Manager ___________________________________ 30940 Hawthorne Blvd. Rancho Palos Verdes, CA 90275 310-544-5202 (telephone) 310-544-5293 (fax) aram@rpvca.gov 2 www.rpvca.gov  Do you really need to print this e-mail? This e-mail message contains information belonging to the City of Rancho Palos Verdes, which may be privileged, confidential and/or protected from disclosure. The information is intended only for use of the individual or entity named. Unauthorized dissemination, distribution, or copying is strictly prohibited. If you received this email in error, or are not an intended recipient, please notify the sender immediately. Thank you for your assistance and cooperation. From: Noel Park <noelparkone@gmail.com> Sent: Sunday, August 13, 2023 2:10:46 PM To: CC <CC@rpvca.gov>; Ara Mihranian <AraM@rpvca.gov>; Ramzi Awwad <rawwad@rpvca.gov>; Ron Dragoo <RonD@rpvca.gov> Subject: Landslide emergency repairs/maintenance EXTERNAL EMAIL: Do not click links or open any attachments unless you recognize the sender and know the content is safe!!!. I want to share a few additional thoughts to my letter about the August 15 agenda item. I realize that this may be too late for late correspondence, but I hope that you may consider these suggestions as you plan next steps. I would support any and all steps that could possibly be justified as maintenance and/or emergency repairs in advance of the completion of the larger project. As long as there was a commitment to properly replace any CSS habitat impacted by such activities, I am confident that the majority of the community would agree. We continue to hear alarming reports about possible El Niño or La Niña conditions next year which may bring about additional excessive rainfall. Coupled with the alarming reports of accelerating land movement in the current staff report, it would seem obvious that we need to take all justifiable steps to ameliorate the situation immediately as opposed to letting business as usual continue until the overall project is completed. Ideas which have been suggested include: 1). Repair or replace the existing culvert under Burma Road adjacent to the “headscarp”. This blockage diverts water onto the “headscarp” and thence into the dreaded fissures thereupon. 3 2). Fill in the fissures with local soil. Mr. Mihranian has said that the City is doing this already, but that new fissures constantly appear and it is very expensive. This is no doubt true, but we need to face the necessity that this will need to be resolutely pursued into the future. Many commenters on the DEIR correctly pointed out that, even if the overall project is very successful, there will be a considerable period of substantial ground movement while the dewatering efforts take full effect. In addition to new fissures, it seems highly unlikely that that the proposed drainage swales and retention basin will be able to tolerate such movement without serious disruption, particularly to the geotextile linings. For these reasons, we must have a ROBUST maintenance budget, at least for the first few years. The failure of the previous massive control project was at least partially caused by the totally irresponsible lack of maintenance of the surface drainage system. We cannot allow that to happen again. 3) If a seasonal pond is, as has often been reported, to form at the “sandbox” upstream of the PVDS embankment, provision should be made to establish a seasonal (rental?) pump capability to prevent it from seeping into the groundwater. The water could be pumped up to the culvert under PVDS via fire hose or PVC pipe. There is evidence that something similar has been done before, possibly for effluent from dewatering wells. There is a lot of PVC pipe in evidence. Maybe some of it could be reused. 4). It has been suggested that the City may retain existing entitlements to install dewatering wells. Even interim dewatering wells would have to help. It might be expensive, but desperate times call for desperate measures. If entitlements are needed, it might be possible to expedite them on an emergency basis. Surely, every public agency in the state must be aware of this problem. It has been suggested that such entitlements might be stretched to include some hydraugers, under the guise of “advanced technology dewatering wells”, or some such. I guess that they actually are when you think about It. This could also have the valuable effect of creating the “proof of concept” installation that many members of the public and the original engineers and geologists have called for. Always remembering that damaged CSS must eventually be properly replaced. These are just a few suggestions from a simple former engineer/construction manager. I am confident that practicing engineers, with up to date technology, could come up with many more emergency/temporary fixes, if they were given the direction that we need to take all feasible precautions in the meantime. If we really believe that we could actually lose PVDS and the sewer system, it would seem to be our duty to do so. If three is anything I can do to help you to facilitate such measures, I am at your service. If I can speak at Council meetings or committees in support, speak to CHOA or other homeowner groups, write to the press, or anything else that comes to your minds, just let me know. Noel Park 6715 El Rodeo Road Rancho Palos Verdes CA 90275 562‐413‐5147 Sent from my iPhone 1 6 Subject:Late Correspondence for Regular Business Agenda Item 6 on ACA 10 Attachments:06.05.2023 ACA 10 (Haney) Fact Sheet.pdf From: Shaunna Hunter <shunter@rpvca.gov> Sent: Tuesday, August 15, 2023 12:10 PM To: CC <CC@rpvca.gov> Cc: Elena Gerli <egerli@awattorneys.com>; CityClerk <CityClerk@rpvca.gov>; Ara Mihranian <AraM@rpvca.gov>; William Wynder <wwynder@awattorneys.com> Subject: Late Correspondence for Regular Business Agenda Item 6 on ACA 10 Honorable Mayor and City Councilmembers, In advance of tonight’s Regular Business Agenda Item No. 6 on ACA 10, attached is a recent communication received from the city's lobbyist, RPPG, containing information regarding ACA 10, as provided by Assemblymember Matt Haney (author of the constitutional amendment) for the Council’s consideration. This information sheet presents an overview of the bill, encompassing its proposed language, background, problem statement, and proposed solutions as envisioned by Asm. Haney. Of particular focus is the statement, "Under this Constitutional amendment, state and local jurisdictions would be required to take steps to recognize adequate housing as a right and not a privilege only available to the few." As articulated by the bill's author, the legislation establishes an obligation on both state and local governments to take substantive action in fully acknowledging this right. In considering this agenda item combined with the attached information sheet, Staff would like the Council to take note that requiring cities to provide housing as a right may be interpreted as potentially obligated local jurisdictions to actually build, at a minimum, the housing required by RHNA. As previously discussed by the City Council, local jurisdictions are not in the position to be home builders and cannot guarantee that developers will build homes pursuant to a city’s RHNA. Kind Regards, Shaunna Hunter, MPA Public Safety Administrative Analyst II City Managers Office shunter@rpvca.gov Phone ‐ (310) 544‐5305 City of Rancho Palos Verdes 30940 Hawthorne Blvd. Rancho Palos Verdes, CA 90275 Website: www.rpvca.gov . This e-mail message contains information belonging to the City of Rancho Palos Verdes, which may be privileged, confidential and/or protected from disclosure. The information is intended only for use of the individual or entity named. Unauthorized dissemination, distribution, or copying is strictly prohibited. If you received this email in error, or are not an intended recipient, please notify the sender immediately. Thank you for your assistance and cooperation. ACA 10 Last Revised: 06/05/2023 ACA 10 – Constitutional Right to Housing SUMMARY ACA 10 recognizes that every Californian has the fundamental human right to adequate housing on an equitable and non-discriminatory basis. Under this Constitutional amendment, State and local jurisdictions would be required to take steps to fully recognize adequate housing as a right and not a privilege only available to the few. BACKGROUND Housing unaffordability is the primary reason that California is at the epicenter of our nation’s housing crisis with the second-highest average rents and the second-highest poverty rate in the nation. More than 40% of California households and nearly half of all Black Californians are “housing cost burdened”—meaning they spend more on housing costs than they can afford, leaving little to invest in their families and their futures. While the high cost of housing is devastating for all residents, it hits those with the lowest incomes the hardest. About one quarter of renter households in California have extremely low incomes, and an astounding three-quarters spend over half of their income on rent. Subsidized housing vouchers are available to only one in four eligible households. Eligible low-income households can wait as long as an entire generation to obtain subsidized housing they can actually afford. Additionally, more Californians are forced to live on the street than anywhere else in the nation. The state is home to about 12% of the nation’s population but half of all unsheltered people in the country. The burdens of housing insecurity fall hardest on Black people, who make up about 6.5% of California’s population but around 30% of its unhoused population. PROBLEM In California, a safe, affordable home is currently a privilege reserved for those who can afford the state’s skyrocketing housing costs. The state has consistently failed to meet its housing production goals, which has forced thousands into homelessness and placed a financial burden on low- income families. SOLUTION Guaranteeing the right to housing would mean ensuring that all Californians have access to housing that is permanent, habitable, affordable, culturally appropriate, and close to community resources like employment, healthcare, and schools. ACA 10 will recognize that every Californian has the fundamental human right to adequate housing on an equitable and non-discriminatory basis. Should the measure pass the legislature, California voters ACA 10 Last Revised: 06/05/2023 will have the opportunity to vote to add this right to the state’s constitution, creating an obligation on the part of the state and local governments to take meaningful action to fully recognize the right. SUPPORT Abundant Housing LA (Co-Sponsor) Alliance of Californians for Community Empowerment Action (Co-Sponsor) ACLU California Action (Co-Sponsor) End Poverty in California (EPIC) (Co-Sponsor) Golden State Opportunity (Co-Sponsor) Housing Now! (Co-Sponsor) National Homelessness Law Center (Co-Sponsor) PowerCA Action (Co-Sponsor) The Children’s Partnership (Co-sponsor) Western Center on Law and Poverty (Co-sponsor) Action &Agua Dulce Democratic Club Affordable Housing Network of Santa Clara County Aids Healthcare Foundation Alameda County Democratic Party Basta, INC. Bend the Arc: Jewish Action, Southern CA Berkeley Fellowship of Unitarian Universalists Berkeley Tenants Union Bet Tzedek CA Calls CA Democratic Party Renters Council CA housing Partnership Corporation CA Latinas for Reproductive Justice CA Pan-Ethnic Health Network CA Reinvestment Coalition Care CLT Center for Community Action & Environmental Justice Central Coast Alliance United for a Sustainable Economy Centro Legal De La Raza Changelab Solutions Climate Resolve Coalition on Homelessness Community Health Councils Community Lead Advocacy Program CLAP Congregations Prganized for Prophetic Engagement Council of Community Housing Organizations Courage CA Disability Rights CA Dreher Law Firm East Bay Alliance for a Sustainable Economy East Bay Community Law Center East Bay Permanent Real Estate Cooperative Esperanza Community Housing Corporation Evolve CA Faith in the Valley Family Assistance Program First Wednesday San Leandro Friends Committee on Legislation of CA GLIDE Ground GAME la Healing and Justice Center Housing is a Human Right – Orange County Housing Rights Initiative Human Rights Watch Inland Equity Community Land Trusts Inner City Law Center John and Marilyn Wells Family Foundation, Stories from Frontline Koreatown Immigrant Workers Alliance LA Voice Latino Health Access Leadership Council for Justice and Accountability Legal Aid of Sonoma County ACA 10 Last Revised: 06/05/2023 Long Beach Residents Empowered Making Housing and Community Happen Mi Familia Vota National Association of Social Workers, CA National Housing Law Project Oakland Tenants Union Orange County Mobile Home Residents Coalition Parable of Sower International Community Cooperative Peace Builders of Orange County People Organized for Westside Renewal Physicians for Social Responsibility – Los Angeles Planting Justice Pomona United for Stable Housing Power CA Prevention Institute Public Interest Law Project Public Advocates Public Counsel Public Health Advocates Public Health Justice Collective Regional Asthma Management and Prevention Resilience OC Riverside All of Ur or None Sonoma Valley Housing Group Starting Over, INC. Strategic Actions for a Just Economy Stronger Women United T.R.U.S.T. South LA Techequity Collaborative Thai Community Development Center The Los Angeles Metropolitan Churches The People’s Resource Center The Santa Monica Democratic Club U.S. Vets Homeless Feeding and Housing Services Union Station Homeless Services Venice Justice Committee Western Regional Advocacy Project Young Invincibles FOR MORE INFORMATION Yasamin Salari | Legislative Aide Office of Assemblymember Matt Haney (916) 319-2017 Yasamin.Salari@asm.ca.gov TO: HONORABLE MAYOR & CITY COUNCIL MEMBERS FROM: CITY CLERK DATE: AUGUST 14, 2023 SUBJECT: ADDITIONS/REVISIONS AND AMENDMENTS TO AGENDA _____________________________________________________________________ Attached are revisions/additions and/or amendments to the agen da material received through Monday afternoon for the Tuesday, August 15, 2023, City Council meeting: Item No. Description of Material 3 Emails from: Noel Park; Mickey Rodich Respectfully submitted, __________________ Teresa Takaoka L:\LATE CORRESPONDENCE\2023\2023 Coversheets\20230815 additions revisions to agenda thru Monday.docx 1 3 Subject:FW: Landslide emergency repairs/maintenance ‐‐‐‐‐Original Message‐‐‐‐‐ From: Noel Park <noelparkone@gmail.com> Sent: Sunday, August 13, 2023 2:11 PM To: CC <CC@rpvca.gov>; Ara Mihranian <AraM@rpvca.gov>; Ramzi Awwad <rawwad@rpvca.gov>; Ron Dragoo <RonD@rpvca.gov> Subject: Landslide emergency repairs/maintenance EXTERNAL EMAIL: Do not click links or open any aƩachments unless you recognize the sender and know the content is safe!!!. I want to share a few addiƟonal thoughts to my leƩer about the August 15 agenda item. I realize that this may be too late for late correspondence, but I hope that you may consider these suggesƟons as you plan next steps. I would support any and all steps that could possibly be jusƟﬁed as maintenance and/or emergency repairs in advance of the compleƟon of the larger project. As long as there was a commitment to properly replace any CSS habitat impacted by such acƟviƟes, I am conﬁdent that the majority of the community would agree. We conƟnue to hear alarming reports about possible El Niño or La Niña condiƟons next year which may bring about addiƟonal excessive rainfall. Coupled with the alarming reports of acceleraƟng land movement in the current staff report, it would seem obvious that we need to take all jusƟﬁable steps to ameliorate the situaƟon immediately as opposed to leƫng business as usual conƟnue unƟl the overall project is completed. Ideas which have been suggested include: 1). Repair or replace the exisƟng culvert under Burma Road adjacent to the “headscarp”. This blockage diverts water onto the “headscarp” and thence into the dreaded ﬁssures thereupon. 2). Fill in the ﬁssures with local soil. Mr. Mihranian has said that the City is doing this already, but that new ﬁssures constantly appear and it is very expensive. This is no doubt true, but we need to face the necessity that this will need to be resolutely pursued into the future. Many commenters on the DEIR correctly pointed out that, even if the overall project is very successful, there will be a considerable period of substanƟal ground movement while the dewatering efforts take full effect. In addiƟon to new ﬁssures, it seems highly unlikely that that the proposed drainage swales and retenƟon basin will be able to tolerate such movement without serious disrupƟon, parƟcularly to the geotexƟle linings. For these reasons, we must have a ROBUST maintenance budget, at least for the ﬁrst few years. The failure of the previous massive control project was at least parƟally caused by the totally irresponsible lack of maintenance of the surface drainage system. We cannot allow that to happen again. 3)If a seasonal pond is, as has oŌen been reported, to form at the “sandbox” upstream of the PVDS embankment, provision should be made to establish a seasonal (rental?) pump capability to prevent it from seeping into the groundwater. The water could be pumped up to the culvert under PVDS via ﬁre hose or PVC pipe. There is evidence that something similar has been done before, possibly for effluent from dewatering wells. There is a lot of PVC pipe in evidence. Maybe some of it could be reused. 4). It has been suggested that the City may retain exisƟng enƟtlements to install dewatering wells. Even interim dewatering wells would have to help. It might be expensive, but desperate Ɵmes call for desperate measures. If 2 enƟtlements are needed, it might be possible to expedite them on an emergency basis. Surely, every public agency in the state must be aware of this problem. It has been suggested that such enƟtlements might be stretched to include some hydraugers, under the guise of “advanced technology dewatering wells”, or some such. I guess that they actually are when you think about It. This could also have the valuable effect of creaƟng the “proof of concept” installaƟon that many members of the public and the original engineers and geologists have called for. Always remembering that damaged CSS must eventually be properly replaced. These are just a few suggesƟons from a simple former engineer/construcƟon manager. I am conﬁdent that pracƟcing engineers, with up to date technology, could come up with many more emergency/temporary ﬁxes, if they were given the direcƟon that we need to take all feasible precauƟons in the meanƟme. If we really believe that we could actually lose PVDS and the sewer system, it would seem to be our duty to do so. If three is anything I can do to help you to facilitate such measures, I am at your service. If I can speak at Council meeƟngs or commiƩees in support, speak to CHOA or other homeowner groups, write to the press, or anything else that comes to your minds, just let me know. Noel Park 6715 El Rodeo Road Rancho Palos Verdes CA 90275 562‐413‐5147 Sent from my iPhone From: Mickey Rodich <mickeyrodich@gmail.com> Sent: Monday, August 14, 2023 4:12 PM To: CC <CC@rpvca.gov> Subject: Fwd: Agenda Item# 3 - Landslide Complex Monitoring Program EXTERNAL EMAIL: Do not click links or open any attachments unless you recognize the sender and know the content is safe!!!. I am happy to see that we are starting to move ahead with the Landslide Complex Monitoring Program, however I find the project cost very expensive. The Staff Report asks for $409,878 in Fiscal Year 2023-24 and $850,878 over 3 fiscal years from the CIP. This seems to be a lot of money for testing 2 to 4 times per year as shown on page 4 in the Agenda Report. What the Portuguese Bend Landslide (PBL) needs is continual monitoring by a geotechnical engineer that is experienced in landslides. A few years ago an RPV resident (Gene Dewey) had 2 of his friends, the Director of The Geotechnical Center of Excellence and a Professor from the University of Arizona, who have had first hand experience with the largest landslide in the United States, visit him for 2 days and walked the PBL area to see what was happening. They were doing it as a favor to their friend and not in an official capacity representing the University of Arizona. After reviewing the Landslide they held a meeting with our Mayor and our City Manager Ara to summarize their observations. They recommended 2 companies that do geotechnical work for large open pit mines, that closely compare to our landslide area and would be a good fit for PBL, but they were never invited to bid on the project. They also recommended that RPV hire a full time geotechnical engineer to provide benefit to the project, continuity and oversight and daily monitoring and analyzing the collected data. Along with that they recommend thay RPV retain a qualified consulting company as a resource, 2 or 3 times a year, to analyse the data and verify the 3 progressive amount of movement. This would give us the ability to continually monitor the PBL and determine the movements based on amounts of rainwater as well as groundwater from up above the slide. There are numerous sattelite tracking systems as well as ground based systems that can be used as data collection points. If you have been driving on PVDS lately, you can see that there has been significant land movement in the Abalone Cove landslide, near Wayfarers Chapel. That probably has happened because of a buildup of water in that slide. From what I have seen in the staff report is that water was not being pumped from the wells for some long period of time. Since the Abalone Cove landslide has started to move again, this new Monitoring Program should also include Abalone Cove as well. I wonder if Hout Engineering have a background in monitoring large earth movement landslides or do they hire sub contract with a geotechnical consulting company experienced in open pit mines? Sub contracting will increase the contract costs. I feel that the $850,878 staff recommendation is very high and will lead to cost extensions. Attached please find the correspondences that are referenced above. A) May 25, 2021 R. Gene Dewey <rgdewey@cox.net> May 25, 2021, 10:37 AM to Ken, Ara, Bartbara, Bradley, Chad, me, Kit Ken, So sorry you were unable to make the luncheon on May 18, 2021 when the gentlemen from the U of AZ Geochemical Center of Excellence reviewed their observations of a two day visit to portions of the PB Landslide. During the meeting Council member Barbara Ferraro suggested that Ara Mihranian should hear their comments. He was called and he came to the session. I have attached my notes from this discussion. Please don’t hesitate to call me if you have any questions. Thanks, Gene Dewey One attachment • Scanned by Gmail B) July 28, 2012 email re: Geotechnical Engineer as a permanent staff employee from Brad Ross PhD,PE of the University of Arizona Ross, Bradley Jay - (bjr) <bjr@arizona.edu> Wed, Jul 28, 2021, 10:30 PM to Ara, Gene, Eric, John, David, Barbara, Ken, me, Ramzi, Chad Hi Ara, As before, I can talk about what I would do in your situation as a friend of Gene but not in an official capacity as a representative of the University of Arizona. In my view you have two different issues that may have different solutions. The first issue is planning, procuring equipment and setting up the system. The second issue is operating that system. Considering your timing and the relative difficulty in hiring experienced geotechnical engineers that understand large scale slides, hiring a consulting firm to plan, procure and set up a monitoring system is a good idea. Monitoring for a slide as large Portuguese Bend really requires someone or a company with a background in monitoring of large earth movement, instead of a geotechnical company that focuses on buildings and structures. Therefore someone or a company that does geotechnical work for large open pit mines would be a good choice. A couple companies to consider are Golder and CNI. Golder is a large company that was just bought by WSP. They have several offices (some in California), but you will want to make sure that people they would have do the work are familiar with slope monitoring in open pit mines. The second firm is CNI out of Tucson. They are smaller but their primary business is mining geotechnical issues. There are other companies like SRK that would do a good job, but I have not used them before. That doesn’t mean they would not do a good job for you. Chad could have more recommendations. The key to working with the consulting companies is to have a good scope of work. That is not as easy as it may sound and you could consider using one of the consulting companies to help build the scope. Ultimately you are going to need a plan that includes the following: • Clear set of goals for the monitoring (surface vs sub surface, continuous vs intermittent, autonomous vs manual, terrestrial vs satellite – may be combinations of each) • Type of monitoring required to meet the goals • Manpower requirements to operate the monitoring system • Operating procedures • Target, action, and response plan should movement become critical • Capital cost (including bids for equipment and installation) • Operating cost (comparison of options) • Manpower requirement Sorry if that seems like a lot up front, but if you do a good job of planning it will help ensure that whatever you come up with is effective. The worst thing you can do is end up with a system that does not meet your needs (even if it might be less expensive than other options). When it comes to operations my preference is normally to have employees do that work, but it can work either way. Consulting companies typically charge more per hour and employees usually have more ownership in making sure it is working correctly. Even if you hire, you should continue to retain the consulting company as a resource, but day to day work of looking at data and making sure things are working is easier for someone that lives nearby and hopefully part of the community. You may also want a small group of experts to do reviews of the system once or twice a year. Once you start monitoring, hopefully it will be rather quiet, but that means people can get complacent so independent reviews help to make sure problems are not creeping in. If the slide is moving faster you will need the independent group’s help with deciding what should be done. I am sure much if this is what you would have done anyway. Hopefully some of it is useful. Regards, Brad Brad Ross, PhD, PE Professor of Practice Director, Geotechnical Center of Excellence Lowell Institute for Mineral Resources University of Arizona 1235 E. James E. Rogers Way PO Box 210012 Room 215 Tucson, Arizona 85721 Email: bjr@arizona.edu Phone: 520-827-9649 -----Original Message----- From: Ara Mihranian <AraM@rpvca.gov> Sent: Wednesday, July 28, 2021 6:55 PM To: R. Gene Dewey <rgdewey@cox.net> Cc: Eric Alegria <Eric.Alegria@rpvca.gov>; John Cruikshank <John.Cruikshank@rpvca.gov>; David Bradley <david.bradley@rpvca.gov>; Barbara Ferraro <barbara.ferraro@rpvca.gov>; Ken Dyda <Ken.Dyda@rpvca.gov>; Mickey Rodich <mickeyrodich@gmail.com>; Ramzi Awwad <rawwad@rpvca.gov>; Ross, Bradley Jay - (bjr) <bjr@arizona.edu>; Williams, Chad Payne - (cpwilliams) <cpwilliams@arizona.edu> Subject: [EXT]RE: Geotechnical Engineer as a permanent staff employee External Email Hi Gene, I truly appreciate your suggestions and expressed interest in the Portuguese Bend Landslide. We all share your concerns, as well as the concerns of Peninsula residents, on monitoring the landslide and managing the City's expenditures on it. Councilman Dyda has made it acutely clear to us that PVDS is sitting on wet soil and has the potential to result in a major regional and environmental catastrophe. The City is working hard on advancing the Portuguese Bend Landslide Remediation project, as well as seeking funding assistance from County, State and Federal agencies. That is the reason why the City sent letters out to our representatives last week urging their assistance and commitment to remediate the landslide. The timing seemed most appropriate with the unfortunate sewage spill that occurred in the Santa Monica Bay from the Hyperion Reclamation facility, that could potentially occur if PVDS gives way. I gained a lot from our meeting with the geotechnical engineers from the University of Arizona. Many of their observations align with the City's observations, including monitoring the movement. As I see it, the City needs more than a geotechnical engineer when it comes to the landslide. It needs a team of engineering experts that specialize in landslides. Hiring a full time geotechnical engineer is not going to meet our needs. However, a geotechnical firm can. A firm can provide a variety of resources the City can rely on to manage the landslide, including a surveyor, geologists, engineers, etc. Collectively, hiring a firm would likely be most cost effective for our City. The City's Public Works Department is in the process of publishing a request for proposals for this specialized service with the intent to have a firm onboard by fall. We are doing our best to move this process along expeditiously knowing the potential outcome. If Brad and Chad have suggestion on such firms that provide these full services, please let me know and I will make sure we contact them (they are copied on this email). The community's support is needed for the Portuguese Bend Landslide Remediation project, and I hope we can continue working together on this very important subject and welcome your input. Ara p.s. I was not aware of a bathroom repair project at Ladera Linda, but will certainly look into it. Ara Michael Mihranian City Manager ___________________________________ 30940 Hawthorne Blvd. Rancho Palos Verdes, CA 90275 310-544-5202 (telephone) 310-544-5293 (fax) aram@rpvca.gov www.rpvca.gov  Do you really need to print this e-mail? This e-mail message contains information belonging to the City of Rancho Palos Verdes, which may be privileged, confidential and/or protected from disclosure. The information is intended only for use of the individual or entity named. Unauthorized dissemination, distribution, or copying is strictly prohibited. If you received this email in error, or are not an intended recipient, please notify the sender immediately. Thank you for your assistance and cooperation. -----Original Message----- From: R. Gene Dewey <rgdewey@cox.net> Sent: Monday, July 26, 2021 2:42 PM To: Ara Mihranian <AraM@rpvca.gov> Cc: Eric Alegria <Eric.Alegria@rpvca.gov>; John Cruikshank <John.Cruikshank@rpvca.gov>; David Bradley <david.bradley@rpvca.gov>; Barbara Ferraro <barbara.ferraro@rpvca.gov>; Ken Dyda <Ken.Dyda@rpvca.gov>; Ara Mihranian <AraM@rpvca.gov> Subject: FW: Geotechnical Engineer as a permanent staff employee CAUTION: This email originated from outside of the City of Rancho Palos Verdes. Ara, I would like to suggest that you find a route to fill the position of Geotechnical Engineer to be the Project Manager for the Portuguese Bend Slide mitigation project now as opposed to the next budget cycle in July of 2022. The use of a consultant for this function will certainly cost more than a permanent employee. A consultant should be retained to assist this individual and the city of RPV on an ongoing basis, to help outline action plans, to develop and implement monitoring programs, to study the availability of federal and state funds, etc. This was suggested by the University of Arizona geotechnical experts in May during their visit to the PB Slide. The slide has be around for a long time and the city and county spend a lot of money dealing with the movement. This is major concern of residents on the Peninsula. A individual whose sole responsibility is monitoring and managing the slide remediation is a position that should have been filled years ago. Now is the time to remedy that mistake. At the start of this new mitigation project, not a year from now. When I saw the new urinals in the Ladera Linda men’s room the other day, I wondered who in the city does the cost analysis on such stupid projects? Is this the Public Works department? Something that should have been done years ago, gets done a few months before the place is scheduled to be demolished. How does this make sense while not being able to fill a critical position now, not make sense. Please reconsider this decision. When I think back to the $ 20 mm dollars that was spent on the San Ramon Canyon pipe line that was not necessary. If the inlet at 25 th St had been modified and replaced, by the city and county of LA before the city of RPV spent the money for the pipe line as opposed to after the pipe line was completed, this expenditure would not have been made. Several citizens with engineering experience were involved in meeting with Ron Dragoo, showing him drawings obtained from the city of San Pedro of the inadequate inlet to the 40" storm drain on 25th St. Our suggestions fell on deaf ears with the city of RPV maintaining that the City and County of LA were uncooperative, when in fact they were designing the mitigation measures all along. Think of how far the $ 10 mm portion of RPV city funds would have gone toward the salary for a geotechnical engineer. Thanks, Gene Dewey Sent from my iPad ReplyReply allForward May 17, 18 2021 Portuguese Bend Slide Visit Notes by Gene Dewey that were taken during a discussion on May 18, 2021 of a field visit to portions of the Portuguese Bend Landslide by, Bradley Ross, Chad Williams and Gene Dewey In attendance; Bradley Ross, Chad Williams, Gene Dewey, Mickey Rodich, Kit Ruona, City Council member Barbara Ferraro and RPV City Manager Ara Mihranian Brad Ross is a Ph.D Professor of Practice at the U of AZ Mining and Geological Engineering Department and Director of the Geotechnical Center of Excellence. Chad Williams is a Ph.D candidate who is the Assistant Director of the Geotechnical Center of Excellence. They both have extensive mining experience and were present at the time of the largest landslide in the mining industry of some 140 mm tons. They started the Geotechnical Center of Excellence as a result of what was learned from the Manefay landslide in 2013. Bingham Canyon’s Manefay Landslides and the Future of the ... geology.utah.gov › map-pub › survey-notes On April 10, 2013, two massive landslides carried about 145 million tons of waste rock into the bottom of the open pit at Bingham Canyon, the largest copper mine in the U.S. These are the largest mining-induced landslides in history. Images for Manefay Slide Bingham Canyon o The Manefay landslide at the Bingham Canyon open-pit copper ... The Manefay landslide at the Bingham Canyon open-pit copper mine on April 11, 2013. Also notable are the two different slides—the earlier light gray slide of pyritized Bingham Mine Formation quartz sandstones overlain by the yellow-brown, oxidized dump material which slid about 1.5 hours later. Brad and Chad agreed to make a visit to the PB Slide as a favor to Gene Dewey. After a very cursory two-day review of the slide on the ground which included a walk along the moving portions of PVDS and into a portion of the slide on the south side of the roadway followed by a visit to the Paseo Del Mar slide, Sunken City, San Ramon Canyon and 18 hole slide, they walked the east side of the Portuguese Bend slide along the Rim Trail. The following morning was occupied walking a portion of the toe of the slide from the PBBC to Inspiration Point and up to the archery range from the shoreline trail. They reviewed their visit and comments with RPV Council member Barbara Ferraro later that morning. She suggested they invite City Manager Ara Mihranian to hear their comments. Following that session the balance of the day was spent walking the mid portion of the slide north of the deep dip in PVDS roadway. They pointed out that they were not here as consultants or representatives of the University of Arizona, but as friends of Gene. They noted that the outer perimeter of the slide had indications of moving toward the middle. As it moves toward the ocean the toe is eroded away by the tide and wave action. The lower part is moving faster than the upper portion of the slide. The sides of the slide are moving to the center to fill in the void and creating several natural dams in an east west orientation. The vegetation inside the slide mass is extensive. The fissures that are visible disappear into the mass of vegetation. It would be nearly impossible to find them all and get equipment to them without removing most if not all of the vegetation. If the fissures were filled with a mixture of fly ash and cement it would set up similar to concrete. The slide movement will continue to open new fissures, reducing the fly ash’s effectiveness to limit infiltration. The fly ash and cement could create a less pervious dam effect causing more water to accumulate in the aquifer. If this were a mining operation that they were managing they wouldn’t fill the fissures with a fly ash and cement mixture. They have no problem with filling the fissures with dirt where accessible. This would maintain a similar permeability as the surround material and not dam water internal to the slide mass. Surface drainage collection is a good step where it can be done in such a manner that it is maintained. Extensive daily monitoring of the slide is very important to understand just what is moving and how fast it is moving and if it is accelerating a sign that the failure is moving towards progressive failure. This needs to be done also to measure the effectiveness of any remediation efforts and provide early warning of a potential catastrophic failure. Horizontal drains could be effective and perhaps the place to start after a monitoring and management system is put in place. A geotechnical engineer on the staff and a geotechnical contractor employed who could provide benefit to the project, continuity, and oversight. There are several systems available for monitoring the slide which could be evaluated. • Continuous GPS units – Can measure 3D displacement on an hour by bour basis. Units can be self- contained on run on small batteries for years. • Robotic theodolite/Prism system (automatically measures movement every few minutes and alerts if thresholds are meet that indicates a problem). Measures individual points and can alarm if the slide is accelerating. • Extensometers – relatively simple systems to measure if cracks are getting wider. Should be set up to alarm if movements start to accelerate. • InSAR – Satellite-based radar that can be used to measure movement over large areas like the PB Slide. Contractors can provide a service but only shows the movement every 11 – 22 days (depending on the satellites used). • Ground based radar – continuously measures movement over a large portion of the slide area. Can send out alarms if slide starts to accelerate. • TDR Cable - Time-domain reflectometer (used in drill holes to determine where movement is occurring underground. President Trump Signs “National Landslide Preparedness Act ... www.mwcapitol.com › post › president-trump-signs January 6, 2021- Legislation to establish a National Landslide Hazards Reduction Program in the U.S. Geological Survey (USGS) to better identify and understand landslide risks, protect communities, save lives and property, and improve emergency preparedness became law Tuesday when President Trump signed H.R. 8810, the National Landslide Preparedness Act. • Expands early warning systems. The bill expands existing early warning systems for post-wildfire landslides in recently burned areas across the United States. It also requires procedures to be developed for federal monitoring of storm water drainage in areas with a high risk of landslides, in coordination with state, local, and tribal governments. • Creates a new federal program focused specifically on landsl ide hazards. The bill would establish a National Landslides Hazard Reduction program through the United States Geological Survey (USGS), which would identify risks and hazards from landslides to protect at-risk communities and improve communication and emergency preparedness. • Develops new maps to help communities prepare for landslide risk . The bill would direct the USGS to implement a 3D Elevation Program to increase data collection and landslide threat identification across the country. Enhanced elevation data, such as LIDAR, is critical for numerous reasons—to help communities plan for and respond to natural hazards; to update the nation’s topographical maps; and to inform a myriad of uses including public safety, national security, planning, infrastructu re, transportation, agriculture, and natural resource management. • Authorizes new landslide-related grant programs. The bill authorizes new programs to provide funding to state, territorial, local, and tribal governments for landslide research, mapping, ass essment, and data collection. • Establishes committees to better deal with landslide risks. The bill establishes an advisory committee on landslides and creates an interagency committee to coordinate better landslide responses from the multiple government agencies with jurisdiction. -2-