2006 Questions
Unless otherwise specified these questions are being answered by District staff. These were sent to escarpment@dnv.org

Date: Jan 26, 2005 From: Willy Schuurman
Q: What is the algorithm for "painting" At Risk properties red or yellow in the Phase 1 report. Appendix IV "Risk Estimates at the Base of the Escarpment" has values in the rightmost table "Individuals Most at Risk (16 hrs/day)"  - how were the values in those tables computed? For example, 2372 Carmen Place results in a value of 1.5E-04 if a house is >25 degrees. Is the risk at the base a function of the Sum of (the probability of slides at the top flowing into a base property) + the location of the base home on the run out path (25, 23, 21, 19 degrees). Its appears that this individual table does not consider the Sum of (the probability of slides of ALL crest properties that could flow into a base property). It appears that if a property at the top has a high societal risk (slide might hit 5 homes at the base), then all the homes in its potential flows got assigned a high individual risk assessment. The individual risk at the base should not be a function of what's at the base, only what's at the crest that could flow into it.
Date: Jan 26, 2005 From: Willy Schuurman
Q: The phase 1 report did not deal with the location and flows from natural springs or small creeks on the slope. Aren't these sources of water factors in the risk of slides that should be considered?
Date: Jan 26, 2005 From: Willy Schuurman
Q: Timeframe: When will Phase II report be public?
Date: Jan 26, 2005 From: Willy Schuurman
Q: What will be the timeline for implementing Phase II recommended remediations?
Date: Jan 26, 2005 From: Willy Schuurman
Q: Will the BCG Phase II Mitigation Report have a new "target" risk drawing (similar to Phase I Drawing 3 - Preliminary Risk Estimates.pdf) that re-paints the risks assuming all recommended remediation is implemented? If not, when will a post-fix risk map be created?
Date: Jan 26, 2005 From: Willy Schuurman
Q: Will the BCG Phase II Mitigation Report have rough cost estimate for remedial works?
Date: Jan 26, 2005 From: Willy Schuurman
Q: Will the implementation of recommended remediation in the phase two report be mandatory or will there be levels of remediation: Required, strongly recommended, recommended?
Date: Jan 26, 2005 From: Willy Schuurman
Q: Will Phase II report undergo Peer review prior to its release?
Date: Jan 26, 2005 From: Willy Schuurman
Q: What will be the monitoring processes to track the implementation status of Phase II recommended remediation: (e.g. In progress, completed etc)?
Date: Jan 26, 2005 From: Willy Schuurman
Q: It has been stated that more Property buyouts to reduce risks are not being considered as a future option. From an overall slope safety perspective, why is the purchase of more properties being ruled out at this time? Why did property buy-outs occur before the Phase I report was released? Were the most at risk homes, escarpment wide, purchased at that time? Page 10 of the Phase I report lists the top 10 sites on the escarpment that are likely to initiate a slide F(Pslide). 2157 Berkely was purchased yet it is not on this top 10 F(Pslide) list. It appears that 2372 Carmen Place has the same F(Pslide) risk as the purchased 2157 Berkely purchase, yet it appears that 2372 Carmen Place has an even higher Societal Risk per year.
Date: Jan 26, 2005 From: Willy Schuurman
Q: Why are mid slope properties not being considered as a potential origin of a slide in the study? There are mid slope properties (call them M) above base properties (call them B) where M has potential to be the source of a slide. Property M is not considered in the BCG reports to be anything but a base property with the potentially the same risks as B. What can the owner of B do to completely understand the risks that property M imposes on them?
Date: Jan 26, 2005 From: Willy Schuurman
Q: DNV staff have the ability to monitor piezometer readings and local rainfall levels. Can raw data be published so that interested parties have access (similar to how river levels are posted http://scitech.pyr.ec.gc.ca/water/StnFrame.asp). How is the data that DNV is collecting different than data collected and released by say Environment Canada or different than this site is reporting: http://www.usbr.gov/gp/hydromet/carterco.cfm
Date: Jan 26, 2005 From: Willy Schuurman
Q: Does the District have an overall Tree Management plan for the slope.
Date: Jan 26, 2005 From: Bill Maurer
Q: When will the District make rainfall and piezometer data available on their website?
Date: Jan 26, 2005 From: Bill Maurer
Q: How do Community Association Directors question decisions made during Evacuation Alerts or Evacuations. The key decision makers Mayor, CAO, and Director of Engineering refused to communicate with the Community Association during the last Evacuation Alert when questioned as to the reason for the size of the evacuation area. Attempts were made to reach them via email, via the information line, via cell phone, via their office lines, and directly after they finished doing a TV Interview.
Date: Jan 26, 2005 From: Bill Maurer
Q: What will happen to properties that still show as being the origin of a hazardous risk < 1 in 10,000 or the target of such a risk when the phase 2 report is released?
Date: Jan 26, 2005 From: Bill Maurer
Q: When will the Escarpment Risk Mitigation Report be released?
Date: Jan 26, 2005 From: Bill Maurer
Q: When will the property of Nancy Van Insberghe at 2430 Chapman Way be purchased as promised?<
Date: Jan 26, 2005 From: Bill Maurer
Q: When will the hazardous walls on the Stabler property on Lennox street be removed?
Date: Jan 26, 2005 From: Bill Maurer
Q: Why were 300 homes issued an Evacuation Alert on January 12th when many of these are at either no risk or minimum risk from a landslide?

2005 Questions

Answered Questions (most recent at top)
Unless otherwise specified these questions are being answered by District staff. These were sent to landslide@dnv.org

Q: Is it possible to generate property maps showing utility connections like the one on the landslide page for the area north to Hyannis and the area south to Swinburne?

A: The map on the Landslide page was put together specifically after the landslide by the GIS department and is not available for other areas. You can download the scanned B&W engineering drawings showing the utility connections from the Sanitary Drawings section of the Property Information Explorer of the DNV website's Geoweb.

Q: I'd like to know what is happening regarding the adjustment of the mill rate for home in the area of the slide. It had been indicated the district would look into adjusting it.

I spoke with the assessment authority and realized they would not do anything regarding changes to the properties as the values are based on last years sales. Therefore I'm hoping that the district will come through on adjusting the home values. Have you heard any information regarding this issue?

A: The same annual residential tax rate is used throughout the District and there is nothing in the Community Charter to permit Council to make an adjustment to the tax (mill) rate even in extenuating circumstances. By statute we also must accept property assessments provided by BC Assessment to calculate property taxes. Therefore any property tax relief to owners directly effected by the slide will require the approval of the Provincial Government.

Q: This question has now been forwarded to the office of Dan Jarvis with the addition of: Is the provincial government planning to provide property tax relief to owners affected by the slide?

Q: When will the section of the Baden Powell trail that starts on the SOUTH-side of Hyannis Drive (along Canyon Creek eventually leading to Riverside Drive (north end)) be re-opened?

A: We are working on several other areas of trails that were damaged by the rains several weeks ago. We hope to be working on the BP Hyannis section fairly soon and hopefully have it re-opened within a month.

Q: Do you have an estimated schedule for the landslide project? Dates which people are interested in include:
  • Treetop/Chapman/Berkley evacuee return date
  • Geotech Escarpment report release date
  • Geotech Landslide forensic report release date
  • Geotech Escarpemnt report recommendations follow-up inspection date
  • Geotech stability certifications
  • Date decision to be made for future of properties directly affected by slide


  • Treetop/Chapman/Berkley evacuee return date
    As of Feb 16, 2005 ten homes are still evacuated. The District, with its geotechnical experts are working towards conditionally lifting the evacuation orders for about half of those properties in about three weeks time. For the balance, the investigation will take at least another two months.
  • Geotech Escarpment report release date
    The scope of this report will be finalized only following the completion of the forensic report. The study process will take several months. Realistically, the earliest release date would be at the end of 2005.
  • Geotech Landslide forensic report release date
    The completion of this report will take several months. The release date is unknown at this time.
  • Geotech Escarpemnt report recommendations follow-up inspection date
    The District expects that the report’s recommendations will have to be adopted, including possible periodical inspections. However, other forms of monitoring may be involved. It is important to note, that residents also will likely have a significant role in landslide hazard risk reduction over the long term.
  • Geotech stability certifications
    The District is not in the position to issue such certificates.
  • Date decision to be made for future of properties directly affected by slide
    It is unknown at his time. It will however vary depending on the location and the severity of the damage (or potential damage) to the property.
Q: Will the district start requiring disclosure of slide hazards when properties are sold? How will this work?

A: The District has committed to undertaking a program to address potential slide hazards in the District.  The geotechnical reports will be available to the public. However, all involved in real estate transactions will have to undertake due diligence to access that information.

Q: Once everything is stabilized and passes inspections, will there be regular follow-ups or geotechnical surveys. What period (annual, every 2 years, ...)?

A: On February 1, 2005 District Council committed $275,000 to initiate a program in the 2005 budget to provide geotechnical services to work with homeowners on geotechnical issues and develop a long term strategy for slope issues within the District.  Details on this initiative have not been developed.

Q: Why the change to Palladin security?

A: Once the situation had stabilized there was a need for the RCMP to return to their regular duties.  Paladin Security personnel provides 24 hour security for the site at a lesser cost. An RCMP patrol car  is still available in the concern area.

Q: Will the geotechnical documents include the addresses of non-conforming homes?

A: Previous geotechnical studies had identified individual lots that required improvements.  The scope of any new studies has not been identified.

Q: What number/person/email should be called to report slides/slippages or for people with geotech concerns or needing geotech advice?

A: To report slides/slippages, residents may call our Engineering Dept. between 8:30 am and 4:30 pm at 604-990-2450.  After hours, emergencies can be reported to our Emergency line at 604-990-3666.  Residents are encouraged to seek their own professional engineering advice if they are at all concerned about their property.

Q: There have been a number of slides documented in Landslide History reports but it is difficult to find follow up reports to substantiate that the slide areas have been stabilized. Can the district provide such reports for all the slides in the David Cook report?

A: The District and its geotechnical experts will be reviewing all reports relating to slope stability throughout the District.  The public may request copies of reports under the Freedom of Information & Protection of Privacy Act at the Clerk’s Department at the Municipal Hall.

Q: Can the daily reports be more specific about what's being worked on. What addresses and what is the nature of the work on a daily basis?

A: The District strives to give residents the most up-to-date information.  Postings are displayed on our web page at www.dnv.org with the latest information.  The scope of the work is dependent on the conditions encountered and it is difficult to report on the nature of the work ahead of time.

 Given that while ten families are still evacuated, and the District meets them periodically to keep them directly informed, the daily updates of the web page is not practical. We are still committed however to post any significant new information.

Q: What number/person/email should be called to report concerns about leaning or dangerous trees?

A: Dangerous tree calls can be made to District arborists at 604-990-2480.

Q: What special procedures will be in place during heavy rainfall periods? What constitutes a heavy rainfall period (> x mm in y hours)?

A: DNV are installing a number of Piezometers at top of Berkley area which are an Early Warning System, and in the event of a significant rainfall again the DNV would evacuate as necessary. An evacuation plan is now is place for this area. Piezometers are passive devices capable of sensing ground water levels.

The district has not as yet determined the threshold values which constitutes a heavy rainfall period.

Q: Will the geotech reports cover sloped properties accessible from Rivergrove Place? Will the geotech reports cover sloped properties on the banks of the Seymour River below (west of) Riverside Drive?

A: DNV’s primary focus at this time is to attend to the issues at the slide site and affected areas nearby. Once the immediate area has been analyzed the whole Riverside area is to be done. DNV will be employing a Geotech Company to carry out a complete review of any perceived problem areas in the rest of the District over the next 2 years. The scope of the properties to be included in the study area for the Seymour River escarpment has not been established.

Q: What security is in place at the top of Riverside Drive, and at the top and bottom of the landslide?

A: The RCMP mobile office was removed from the top of Riverside Drive on Feb 16. Paladdin security is still in place and has been moved to the areas immediately adjacent to the bottom and top of the slide.

Q: Shouldn’t the District of N.V. reconsider the location of the major water-main (#13) running up the Seymour escarpment between Riverside Drive and Berkley Ave. (just three houses south of 2175 Berkley Ave.). A minor slide resulting in the break of this water-main could create a major emergency?

A: The utilities department have had a geotech engineering firm examine that main specifically since the slide with the goal of recommending steps to enhance it's stability. It supplies much of Deep Cove/ Indian Arm and can't easily be relocated.

Although the area within which the water main is located was checked for instability immediately after the Chapman Way slide, the Utilities Department felt that an investigation specifically focused on the water main was required. A geotechnical investigation was initiated from which we expect to gain information on potential risks and possible mitigative actions. The geotechnical field investigations have been completed, and although we have not yet received the written report, we have been advised by the consultant that there are no immediate concerns.

Should it rupture, it can be turned off in short order.

Q: What is the Landslide Information Line?

A: The District is still operating its Public Information Line (604-990-2311) and e-mail address (landslide@dnv.org) in order to respond to queries about landslide related issues.

This is connected to the District's Communications & Community Relations officer. This position is shared by Colleen Brow (Mon, Tue, Thurs) and Jeanine Bratina (Wed, Thurs, Fri). Their direct line is 604-990-2459.

Q: How does one add a question to Frequently Asked Questions?

A: Email it to info@seymourvalley.ca.

Q: When will the forensic geotechnical report of the Jan 19 Treetop-Chapman slide be available?

A: Forensic experts continue with the survey and data collection required for the forensic investigation. This entire process includes analysis of the data and the creation of a computer model to pinpoint the cause of the slide. It may take months before the full forensic report has been completed.

Q: Will all residents of the affected area receive letters certifying that their house and property are safe?

A: Most property owners that have been evacuated will receive “comfort” letters prior to returning to their residences advising them of the reasons why lifting of the evacuation orders is appropriate.

Q: Will Geotech reports cover sloped properties on Hayseed Close?

A: Hayseed Close is included in the Riverside study area and has been reviewed by a Geotechnical Engineer.

Q: Where can I find the Klohn Leonoff geotechnical report?

A: This report was first released to the press as a 13 page document. Subsequently a Blueridge resident made their copy of the report available which was 35 pages in length containing 2 drawings. On Jan 25 the district made a full copy of the 115 page report available and on Jan 27 added the 20 drawings referenced by the report.

Q: Where can I find the Golder geotechnical report?

A: The district made this 9 page report available to the public on their website on Jan 25.

Q: Is there a time limit for which claims against the district must be made.

A: According to the Local Government Act: a municipality is in no case liable for damages unless notice in writing, setting out the time, place and manner in which the damage has been sustained, is delivered to the municipality within 2 months from the date on which the damage was sustained.

Q: How does the slide affect my property assessment

A: The deadline for appealing property assessments is Jan 31, 2005. Appeals must be made by property owners individually. The assessment is based on the value of your property as at July 2004 so any appeal must claim that the valuation was incorrect for that date.

Q: There appears to be excavation work starting on the terrace near the Kuttner home. What is this for?

A: This work was to install a drainage, sedimentation and debris basin on the slope which redirects groundwater from the landslide slope to the storm sewer system.

Q: What special procedures will be in place during heavy rainfall periods?

A: When rain does occur, District employees monitor slopes and other grounds throughout the District, and continue to monitor all rainfall patterns.


Unanswered Questions (most recent at top)

Q: The Klohn Leonoff report identifies a number of property specific risks and made recommendations for remedial work to reduce those risks. How can a resident who is not the owner of the property with identified risks find out if the remedial work suggested was ever carried out.

Q: Will the future Geotech Escarpment report identify property specific risks as the Klohn Leonoff did? If so will it also suggest remedial work to reduce identified risks?

Q: The future Geotech Escarpment earliest release date is said to be at the end of 2005. Would it be prudent to release the report in the early fall so that any high priority recommendations could be acted on before the November rains start.