Administrative questions 2019

Undercut shoring (2)

Can undercutting also occur more than two years after dredging? Does dredging take into account the depth of the shoring? Can the cost of repairing damage to the shoring be reimbursed? Can the area manager verify that the shoring is installed at the correct waterline? How do we prevent this undercutting in the future? (Peter Vonk, Dec. 29, 2019)

Agriculture Portal

When the Agriculture Portal was launched, were the measures (most) effective examined? Does the evaluation give reason to adjust the list of measures? What other themes and measures are being considered to expand the Agriculture Portal with? Do they have a proven effect? How much does HHNK contribute to the organizational structure of the Soil & Water cooperation? When will you come up with a board proposal for the follow-up process? (Saskia Borgers and Frank Frowijn, December 16, 2019)

Test terp Broeckgouw

What is the reason for the early dismantling of the Broeckgouw test terp? Is this a peat layer, which behaves differently than clay? If so, what are the consequences? (Saskia Borgers, Dec. 3, 2019)

Climate Change

To what extent do the precipitation statistics presented on October 10 differ from the data HHNK is currently working with in both operational water management and climate adaptation activities? What are the (financial) consequences for our work in the coming years? Think of the additional required capacity of storage basins and pumping stations (on top of what is already foreseen in the MJP)? (Frank Frowijn, November 21, 2019)

Dike reinforcement Durgerdam

What is the current status of this project? When will you submit the project plan to the General Board for decision? Would you put this item on the agenda for the next W&W Committee meeting? (Wim Hamers, November 18, 2019)

Undercut shoring

Are you familiar with the NHD article 'Alarm bells are ringing after subsiding embankment', in which a resident of Berkhout sounds the alarm? What do you think of the described interaction between citizen and water board? Are you prepared to work with the resident to find out how this process could have developed? In terms of minimum depth, watercourses must comply with the legger and the keur. To what extent does a maximum depth also apply? Would you like to include on website information on how deep an optimal shoring should be installed with a warning about undercutting in case of future deepening of the watercourse due to dredging? (Peter Vonk, November 18, 2019)

Purification technology

Are you aware of the Nereda purification technique and are you familiar with the Kaumera product? Is it true that HHNK is committed to developing microfiltration and supercritical gasification, a technique that has not yet proven itself? Would you like to draw up a thorough vision to determine which purification technique will be used to replace obsolete plants? (Sjaak Hoogendoorn, October 31, 2019)

Polder Noordmeer

The dike around the Noordmeer polder north of Broek in Waterland was recently partially renewed. This polder is safe and the dike looks good. How large is this polder Noordmeer in terms of the number of hectares unbuilt? What did bringing the quay around this polder in order cost approximately? (Peter Vonk, October 29, 2019)

Flooding Egmond aan den Hoef

Why does the water in the Wimmenummerpolder remain high for so long? It concerns the region Zandweg-Heerenweg in Egmond aan den Hoef. In surrounding areas the water level is back to normal. (Jacob Avis, October 24, 2019)

Former steam pumping station Kaagpolder

Next to the Kaagmolen in Opmeer is a beautiful historic building, which used to house a steam and still later a diesel pumping station. Is this building on the monument list of HHNK? And is it possible to furnish this building with a presentation on historical water control? (Peter Vonk, September 24, 2019) 

Land farm 'The Bunders'

In the Eierland polder, against the Waalenburg polder, there is a farm called "the Bunders. This arose on the alluvial soil of the old land of Texel. Because the grounds of the farm are part of the dike foot between the polders, the water board has always owned these grounds. It is now rumored that Natuurmonumenten has bought the farm from HHNK. What has HHNK done with the land lately and what agreements have been made about this with organized agriculture on Texel? (Arie Lap, September 12, 2019)

Impact of PFAS on dredging projects and lab research.

Can you update us on the impact of PFAS on the progress of dredging projects and lab research? Do these substances also play a role in our management area? Does this hinder the disposal of matured dredged material? (Kees Stam, September 5, 2019)

PAS ruling Council of State

In May, the Council of State ruled in the case surrounding the Nitrogen Action Programme (PAS). This so-called 'nitrogen decision' affects all projects that lead to an increase in the emission of nitrogen oxides and/or ammonia in the vicinity of Natura 2000 areas. What are the consequences of this ruling for current and future projects of HHNK? For which projects will this decision lead to delay? What delays will occur in time and what are the financial consequences? (Wim Hamers, September 4, 2019)

Markermeer dikes and participation

When calculating the 'unloading quay' a simpler calculation program was used for cost reasons. Are there other parts of the overall project where the cheaper calculation program was used, and does the situation of the 'unloading quay' give reason to recalculate and re-calculate those as well? Are we sufficiently supportive of the changes in calculation methods, technical choices and implementation, or does establishing a 'control board' make sense? Are the choices we are now making for the Markermeer dike no-regret-proof for the future? Is it advisable to help establish a stakeholder council for major projects at an early stage? How can we use the planned citizen participation fund? (Fred Sanders, July 15, 2019)

Influence of waterfowl on water quality

Are you familiar with the Mesdag report and the impact of waterfowl on surface water? How does HHNK measure the amount of phosphate and nitrogen produced by the birds? How are these data included in the reporting for the WFD? In what places does the presence of waterfowl give an increased chance that the bathing water no longer meets the standards? Does the increasing impact of birds on the water system lead to adjustment of permitted standards? (Arie Lap, June 12, 2019)

Water Innovation Fund

In June 2017, the Water Innovation Fund was created. In the opinion of the Business category, the progress of the WIF is too slow and reporting and reporting lag far behind. What is the number of pitches so far? How many sign up for the next WIF meeting? Which pitches were positively reviewed by the review committee and what was the innovation? Will HHNK use and promote NGCM's products? Can the board be specifically informed periodically about the WIF? (Ron Wiese, June 5, 2019)

Insecticides

Research by Prof. Martina Vijver shows that the insecticide thiacloprid has a much greater harmful effect on macrofauna in outdoor water than in laboratory tests. Where and in what concentrations do thiacloprid and similar neonicotinoids (such as imadacloprid) occur in HHNK's waters? Have there been situations in the period 2015-2019 where these concentrations occurred above the legal standards? Are these figures alarming and what does HHNK intend to do about them? (Eva Tannehil, May 28, 2019)

Foreland as alternative Marker dikes

The review committee calls the (technical) choice of constructing foreland a good alternative for the reinforcement task of the Markermeer dikes. Why was this alternative not included as an option? Foreland was present at Schellinkhout, Hoorn and Scharwoude, among others, in the Middle Ages. Is there room in the project plan to reassess this alternative? (Saskia Borgers, May 20, 2019)

Use of geotextiles in levee reinforcements.

Are you aware of geotextiles entering the aquatic environment and possibly being taken up by fish? What will you do to prevent this from happening on a large scale? (Saskia Borgers, May 14, 2019)

Work Nieuwendammerdijk

HHNK has granted Liander a permit to place a transformer house on Nieuwendammerdijk in Amsterdam. Liander has already started work and has confiscated a parking space in the process. Is it not customary to have public participation or to be able to object? Can construction take place just like that in a protected cityscape? Why can't a conversion or modification be realized on the spot where there is already a GEB box? (Gerard Meuwese, May 13, 2019)

Possible additional costs Markermeer dikes

The cost of reinforcing the Markermeer dikes could rise from €500 million to €625 million, and possibly more. Is it true that this increase is a result of higher prices for materials, such as sand, as well as increased wages and equipment costs? Is there also additional work involved? If so, what kind of additional work is involved? (Saskia Borgers, April 19, 2019)