Water Shortage Plan Wildfire Situation Council Q&A This - PowerPoint PPT Presentation

 Water Shortage Plan  Wildfire Situation  Council Q&A

 This winter’s snowpack in the Harvey and Magnesia basins was 15% of average. There is now no snow left up there.  No surface runoff from rain has reached the creeks since late May.  There is no “aquifer” in the sense of an underground river. From steady flowrates  , we believe creeks are now being fed by the relatively constant pressure of groundwater in rock fissures.  July 15 the Province increased drought condition level for Lower Mainland to Level 4 (Extremely Dry), the highest level.

Magnesia watershed, July 15 6 a.m. (Lions Bay SAR)

Harvey Ridge, July 15 8 p.m. (Lions Bay SAR)

 There are no reservoirs, dams or lakes up there.  We rely on streamflow in Harvey and Magnesia Creeks.  Two modern plants draw water from the creeks and store 1-2 days worth of treated water in 6 tanks.

Harvey Intake

UV treatment at Harvey Plant

 Lions Bay’s approx. 1400 residents this month are consuming 900-1,300 liters per person per day  .  GVRD’s 2013 peak week demand was 655 ℓ /p/d.

Villag illage of Lio ions Bay ay Daily aily Wat ater r Pro roductio ion (Usag age + Leak akag age) From Harvey (left scale) From Magnesia (left scale) Per nominal user (right scale, 3-period average) 600,000 1, 1,600 1, 1,400 Level 2 500,000 1, 1,200 Light rain Level 1 400,000 day 1, 1,000 per d person per er day . per 300,000 800 80 US gal. p per per ers per 60 600 Liter 200,000 Li 400 40 100,000 200 20 0 - - Sat. May. 9 Sat. May. 16 Sat. May. 23 Sat. May. 30 Sat. Jun. 6 Sat. Jun. 13 Sat. Jun. 20 Sat. Jun. 27 Sat. Jul. 4 Sat. Jul. 11

Lio ions B Bay W Water r Supply pply & & De Demand 2014 supply 2015 supply 2015 demand day per da SG pe USG

US S gallo llons pe per da r day 01/May 08/May Lio ions B 15/May 22/May Bay W 29/May Water 05/Jun 12/Jun r Supply 19/Jun 26/Jun pply & 03/Jul & De 10/Jul Demand 17/Jul 24/Jul 31/Jul 07/Aug 14/Aug 21/Aug 2015 demand 2015 supply 2014 demand 2014 supply 2015 precip (right axis) 2014 precip (right axis) 28/Aug 04/Sep 11/Sep 12/08/2015 18/Sep 25/Sep 02/Oct 09/Oct 16/Oct 0 10 20 30 40 50 60 11 mm of rain e n equi uivalent nt

 We can’t influence supply on the mountain, but we can reduce demand to eke out that supply.  We’ve been fixing leaks for a year, and the effect is noticeable.  Now we need to reduce our use outdoors, and indoors.

LEVEL 1 : date-based (June 1 – Sep. 30)  Irrigation 3 times/week. LEVEL 2 : Supply-Demand ratio at 200%  Irrigation 1/week and watering by hand.  No washing of hard surfaces (cars/boats by hand). LEVEL 3 : Supply-Demand ratio at 125%  No outdoor use. 12/08/2015 13

 The entire Village needs to participate to make the water last. We must report inadvertent or careless outdoor water use to municipal reception and Bylaw Officer.  Bylaw Officer’s hours increase effective tomorrow: Tuesday and Thursday: 3pm - 7pm Friday, Saturday, Sunday: 2pm - 10:30pm

 The less we all get used to using every day, the longer the supply will suffice to keep us under Level 3.  Under more extreme shortage, if we can still keep water in the mains (which leak 60,000 - 75,000 GPD), so much the better.  If we use more than the creeks can supply on a rolling 36-48 hour basis, we are very quickly in trouble.

EASY  Short showers, shallow baths.  Minimize flushing, clothes washing, dishwashing.  Lo-flo showerheads, $16-$35, 2.5 GPM. LONGER TERM  Lo-flo dual-flush toilets (1.6 gal. full-flush, 1.0 gal. half).  On-demand hot water and recirc systems. Added benefit of reducing load on septic system 12/08/2015 16

 Bad: gardens and routines suffer under Level 3 conservation. Level 3 is triggered by Supply-Demand ratio of 125%. Keep demand down, we don’t have to go to Level 3.  Worse: rolling outages and Cease All Use alerts, constant Boil Water Advisory.  Worst: water in tanks runs out, the water mains empty (the network alone takes 98,000 USG), tanks can’t refill fast enough to avoid long-term shutdown until flushing and hyper- chlorination can take place. 12/08/2015 17

SEVERITY LEVEL 1 (1 JUNE – 30 SEP), PREPARATION: MUNICIPAL ACTIONS DONE: Repurpose Oceanview and Brunswick Tanks as fire reserves. Reconfigure water network to balance demand. Install 10,000 USG raw water buffer tanks at Harvey. Institute Outdoor Water Use bylaw. Communications: place draft OWU conservation level signage, OWU information in tax mailings, increase Bylaw Officer hours with emphasis on water conservation compliance, install demo rain barrel unit at the Hall, publish water consumption stats daily. PENDING: Reinvestigate temporary pipeline to treatment plant from Alberta Creek. Acquire curbside non-potable water barrels. Contract standby portable toilet units. Contract 3,000 gal. shuttle tanker. Pre-contract 10,000 gal. reserve tanker. Source outside non-potable water sources for curbside service. Hold discussions with EMBC, VCH, and FLNRO. Pre-arrange facilities at Gleneagles Community Centre. Communications: contract AM radio station for alerts, contract Audex-type phone outcall system, contract EComm for interoperability between municipal and provincial radios, install remaining OWU conservation level signage to revised design, install signage on demo rain barrel unit at the Hall, install siren at Fire Hall, recruit & train Water Ambassadors.

LEVEL SCENARIO MUNICIPAL ACTIONS  Conservation Level 2 2 Supply-  Water Ambassadors provide education and Demand Factor < 2.0 observation  Public Works captures water from the daily water sampling program for non-potable reuse  Conservation Level 3 3 Supply- Demand Factor <= 1.25

LEVEL SCENARIO MUNICIPAL ACTIONS  Production configured to utilise streamflow 4 Combinations of tanks that DOES exist: batch-mode, isolating plant reaching max. outputs, trickle filling as available, etc. levels or emptying  3 long siren blasts every half-hour between 8 5 Water mains approaching a.m.-8 p.m. for “Cease All Use”  3 short blasts every 10 minutes for an hour outage for “Resume Level 3”

LEVEL SCENARIO MUNICIPAL ACTIONS  Advise EMBC, VCH and Coastal Fire. Mayor 6 Both main tanks empty, deals with media  Commence distributing curbside water recovery likely within 12 barrels  Issue alerts: outage imminent, BWO if and hours when water intermittently returns 7 Both main  Advise EMBC, VCH and Coastal Fire  Put fire tanker(s) on standby tanks empty,  Issue residence alerts to close service valve, no recovery within 12 cut hot water heaters, shutdown septic plants  Commence roving water service once service hours connections run dry. Distribute portable toilets.

 Close water service valve, switch off hot water heaters, shut down septic treatment plants if no flow planned.  Cooking and drinking from self-provided bottled water.  Toilets filled by residents by bucket, from municipality-supplied curbside non-potable water barrels.  Dishwashing by hand using boiled non-potable water.  Bathing at Gleneagles Community Center (TBC), laundry at coin-ops.

 Fire moves uphill and on the wind, and will likely come from the highway, or hiker campfires, or over the ridge.  Air dropped retardant can’t be used in water catchments; (sea)water drops are dangerous to property and personnel. Damage in the water catchments will compromise the water intakes below for years.  Use FireSmart principles on residences. Clear deadfall NOW. NO FIRES, NO FLAME, NO SMOKING in the forests. 12/08/2015 23

 Running the water mains dry is defined as the worst case water scenario, so the protocol is to keep the water mains operating.  With the water mains on, hydrants are operational and normal fireflow of 500 gal./min can be used for offensive firefighting with interior attack.  Once hydrants are out, LBFR and mutual-assist partners switch to shuttling water from reserves for defensive firefighting with no interior attack. 12/08/2015 24

LEVEL SCENARIO MUNICIPAL ACTIONS  State of Local Emergency. Siren sounds for 1 8 Fire impacting the Village min. every 5 mins. Be prepared for evacuation.  Mass-phone outcalls and alerts on AM radio.  Fire response by LBFR and Provincial authorities, including but not limited to firebreaks, air drops and evacuation.  Fire and Police will order an evacuation street 9 Evacuation by street.  Siren will sound continuously.

 Siren for 1 minute every 5 minutes indicates a fire threatening the Village. Be prepared to evacuate (all clear is 3 short blasts every 10 mins for an hour). Preparation:  Take photos of house contents  Know what you’re going to take. Prepack in totes:  Paper and data files, documents, photo-albums  Clothing: walking shoes/boots, overwear, underwear  Toiletries, medicines  Flashlights, battery radio  Nothing that can be bought again: books, food, appliances, most clothes.