Duncanby Lodge & Marina WS - Inspection Report

Inspection Information:

This facility was given a moderate hazard rating.
More information on hazard ratings.

Violations:
A summary of the violations found during the inspection are listed below.

Code	Description / Observation / Corrective Action
303	Operation, maintenance or repair of a water supply system by an unqualified person. Observation: The water supply system should be operated, repaired and maintained by a qualified person as specified in the operating permit or as directed by the DWO. Corrective Action: Recommend that your water system operator(s) obtain some formal water system training. The introductory Small Water System training course put on by BCWWA is the standard course for operators in charge of drinking water systems like yours.
501	Critical Failure to disinfect surface water. Observation: Failure to provide 3 log reduction for protozoa. Corrective Action: The current ATS UV unit does not appear to be accurately monitoring UV dose levels nor stopping the flow of water when minimum dose levels are not being met. A requirement of any certified UV unit is to detect when the UV dose is inadequate and stop the flow of the water to prevent inadequately treated and potentially contaminated water from being consumed or otherwise used for domestic purposes. Without this feature, the UV can not be given any credit for water treatment and without parasite control, removal of the boil water notice which is our end goal cannot be completed. Our office has had a number of conversations with the equipment supplier (EDS Pumps) regarding this piece of UV equipment; specifically the issue of the UV sensor being properly field calibrated or not. We have also had discussions directly with the manufacture of this equipment who stated there are a number of conditions that need to be in place prior to conducting a field calibration of the UV sensor namely: 1. Quartz sleeve and sensors need to be clean and free from the presence of any external moisture 2. ALL four bulbs are must be certified and are newly installed as bulb intensity diminishes over time 3. UVT of source water needs to be 88% or higher It is our understanding that during the last field calibration that all three conditions were not met prior to resetting the UV dose reading to 100%. As the water for your site has never demonstrated such a high UVT, in order to properly field calibrate the UV sensor we recommend disconnecting the UV unit's lower plumbing connection from the treatment train and setting up a temporary means of having the UV unit filled with bottled water. Such a temporary means could be a section of vertical piping exceeding the height of the UV unit and connected to the UV units lower input fitting. With the valve on the UV unit's outgoing pipe in the off position and the sampling port in front of the closed valve in the open position, the UV unit can now be filled by adding bottled water into the top of the section of vertical piping. With new bulbs and clear water, the unit can now be field calibrated to say that the UV dose is 100%. Any changes to the UV dose from changes in the UVT of the water, bulb output or film build-up on the quartz sleeve should register as a drop in UV % and should signal an alarm and shut off the water through the UV unit. As a temporary means of providing parasite control while the UV unit is not fully functional the following alterations to your system can be made: All treated water needs to pass through a bank of 1 micron ABSOLUTE certified filters that minimally has two pathways in parallel and each pathway has two filters in series. Pressure gauges required to monitor pressure pre-filters, between the filters in series, and post filters. There may be more than two parallel pathways but each pathway MUST result in having the water pass through two 1 micron absolute certified filters in series in addition to any other upstream filtration which is often recommended to help protect the more costly absolute filters from clogging too quickly. The simplest modification for your system as there are already a bank of 1 micron absolute filters may be to just add another bank of four 1 micron absolute filters in series with the current bank of filters. With the additional filter bank in place upstream of the UV units, you can set the UV unit up so it will continue to operate regardless of the UV % reading and will not shut off the flow of water. So to summarize the steps needed to get this water system off of the boil water notice and in good standing: 1. Continuing to remove the colour out of the water to remain above the minimum 75% UVT 2. Field calibrating the UV unit correctly as per the manufacture's directions 3. Installing and maintaining a 1 micron filter bank as described - MUST APPLY FOR CONSTRUCTION PERMIT 4. Daily monitoring and recording of required parameters on a log sheet which will be provided to you 5. Continuing with the required bacteriological water sampling program

Comments:
Water system has been reconfigured since the last inspection and is still being looked after by Richard. A new covered area built to house all of the treatment equipment. The original treatment room still houses the bag filter after which water not requiring treatment (toilets and dockside hose bibs for pressure washing) branches off of the supply line. All other water used in the lodges, and dockside sink, ice machine, fish processing. The water line enters the new treatment space and splits into two. One line supplies a pair of 2 cuft tannin removal filters and the other a pair of 4 cuft filters. A new type of media is being used this season. The recharge brine tanks receive a cup of soda ash every second day and a cup of citric acid once a week. UVT of pre-treated water: 21.6%; post treatment 80.2% After the tannin filters chlorine is injected into the line heading to the contact/storage tanks. Pump is triggered by a flow meter to inject the 12% solution into the water. FAC levels measured after the UV unit was 2ppm. Operator uses test strips to measure FAC concentration but is not keeping a logsheet. Need to ensure both the chlorine and test strips are new at the start of each season. Three tanks on the hill hold the water for demand use. A bank of 1 micron absolute filters in the treatment room. two gauges are present' appear to be the outgoing pressures. Filters have not shown any signs of pressure drop since the lodge opened in early June. The small 1 micron filter installed at the kitchen sink and ice machine is now redundant. Once all the spare filters are used up may wish to install a charcoal filter to reduce chlorine and disinfection byproducts. The ATS UV treatment unit is still in use. Bob from EDS Pumps was up pre-season, installed new bulbs, and then field calibrated the unit. Since then a couple of bulbs had to be replaced when the UV control panel alerted the operator. Control panel currently indicating a UV% of 16% New this season is a small 1100 USGal per day desalination plant. Sea water collected from a point off of the pier and passes through a 5 micron pre-filter before the desal unit. Finished water ties into the water system after the tannin filters but before the chlorination.