Elaine Briere - MVLWB From: Shannon Hayden - MVLWB - PDF document

Elaine Briere - MVLWB From: Shannon Hayden - MVLWB [shayden@mvlwb.com] Sent: Wednesday, January 20, 2010 8:39 AM To: permits@mvlwb.com 'Jamie VanGulck'; 'Joe Murdock' Cc: Subject: FW: MV2009L3-0005 Public Hearing - Town of Hay River Powerpoint Presentation Attachments: Presentation2 To MVLWB Public Hearing.pdf For the registry please, Thanks. From: Michael Richardson [mailto:mrichardson@hayriver.com] Sent: Tuesday, January 19, 2010 11:47 AM To: 'Shannon Hayden - MVLWB' Subject: MV2009L3-0005 Public Hearing - Town of Hay River Powerpoint Presentation Shannon, <<...>> Attached is the powerpoint presentation for the Town of Hay River. There is a possibility that the content may change slightly before the hearing next week. I will keep you updated. Michael Richardson Director of Public Works & Planning Town of Hay River 73 Woodland Dr. Hay River, NT X0E 1G1 T: 867 ‐ 874 ‐ 6522 x 217 C: 867 ‐ 875 ‐ 7365 mrichardson@hayriver.com 1

Town of Hay River Water Licence Renewal Presentation January 26, 2010

Welcome On behalf of Major Kelly Schofield, Council and Staff, I bring you greetings and welcome the Mackenzie Valley Land and Water Board to the Town of Hay River. I hope during your stay that you are able to enjoy the hospitality of our businesses and view some of our many local attractions.

Presentation Outline Location, location Water Sewage Landfill & Biotreatment Pad Surveillance Network Program Plans Also, a summary of commitments and some responses to interventions

Location The Town of Hay River sits on the south shore of Great Slave Lake on the mouth of the Hay River, at 60°51’N latitude and 115°44’W longitude. The Town is 200 km south-west of Yellowknife by air and 134 km from the Alberta border via the Mackenzie Highway.

Population 3831 people as of 2008 according to the NWT Bureau of Statistics. Average Annual Growth Rate (AAGR) between 1996 and 2007: 1.2%* * NWT Bureau of Statistics

Geology & Terrain 1 Vale Island The Town of Hay River is situated on the estuary of the Hay River drainage system. The average elevation of the town site is 160 m above sea level and the surrounding terrain is flat. Vale Island, upon which the airport and much of the town’s developed area exists, is a deltaic structure. The Island averages 3 metres or less above the water level and is therefore susceptible to flooding during the spring break-up period. Ancient water courses on the island become active channels during floods.

Geology & Terrain 2 Underlying bedrock consists of a shale, New Town Hay River limestone, and dolomite. The surface material is a result of glaciation, river development, and the shrinking of Great Slave Lake. A hard till can be found at depths of 5.5 - 8.5 metres. This is covered by a layer of compact silty-sandy gravel which in turn is overlain by water deposited silts and clays. The surface organic material has a maximum thickness of 0.6 metres.

Geology & Terrain 3 Surface materials found, such as fine gravel, sand and silt, are typical of deltaic environments. Such materials are susceptible to extensive erosion in the absence of protection from root mats or human-made structures.

Geology & Terrain 4 Hay River is within the discontinuous permafrost zone. Permafrost is sporadic and may range from 0 - 9 m in thickness depending on organic cover and location. Although discontinuous permafrost exists, frost action is not a problem on the higher, well-drained land where the new areas of settlement are situated.

Vegetation The surrounding Boreal Forest is heavily treed. Jackpine, poplar, black spruce, tamarack, and willow are common. Muskeg and swamp are indicative of low-lying land. Golf Course

Climate 1 Hay River receives an average of 34.0 cm of precipitation per year, of which 18.4 cm is rainfall and 165 cm is snowfall. July mean high temperature and mean low temperature are 20.7°C and 10.8°C. January mean high and mean low temperatures are -21.0°C and -30.5°C. Winds are generally from the north-west and annually average 12.1 km/h.

Climate 2 The point of spring break-up Left - 2009 Flood averages June 10 th and freeze- Below – Flooding at the West Channel Bridge up is usually at the beginning of November. Left – Ice damming at Great Slave Lake

Water Supply 1 Hay River’s source for potable water is Great Slave Lake. The intake is located near the mouth of the Hay River.

Water Supply 2 Operating capacity of the pumps used Two 200mm submersible pumps rated at 63L/sec as 13.3 MDTH One Operates, one Standby Freshwater intake facility. Approximately 5.5 miles of 24” intake line, yellow jacket coated, welded steel pipe, cement lined Operating capacity of the pumps used Total capacity 2,532 GPM (distribution) Intake screen size 4 ft diameter stainless steel

Water Quality Hay River’s supply water is of good chemical quality for domestic use. Based on the chemical analysis the water is moderately hard, well buffered, slightly alkaline, and moderately aggressive. Raw treated water quality is better than the Guidelines for Canadian Drinking Water Quality,with the exception of raw water turbidity.

Water Treatment Water is treated in a conventional water treatment plant consisting of coagulation, flocculation and settling. Water is the disinfected with chlorine. Water treatment personnel are trained Class II Operators.

Water Requirements Amount Requested for the Licence Duration: 750,000 Cubic Metres per year 90,000 Cubic Metres per month This is a continuation of the volume approved in the current licence.

2008 Water Use 447,198.19 cubic metres

Concerns & Commitments For water use issues – none.

Sewage Collection There is presently a piped sewage system, connected to a system of anaerobic lagoons. Five lift stations are used in the Town, which discharge sewage through forcemains directly to the lagoon system for treatment. Trucked sewage is collected routinely from residents along the highway.

Sewage Treatment 1 The lift stations discharge sewage into a three-celled anaerobic lagoon system. The combined area of the three lagoons is 1,500,000 m². The effluent flows into a 6.5 km drainage ditch which directs the effluent to a wetlands treatment area, eventually discharging to Great Slave Lake. Lagoon sludge is removed as required and disposed in an approved area adjacent to the lagoons. No sludge was removed in 2009

Sewage Treatment 2 The treatment system was constructed in the late 1960’s and was studied by Dr. Hartland-Rowe. Published in 1974, his report showed the effluent from the wetland was no different from that of a control site nearby. The Hay River wetland sewage treatment system has become the model for high quality sewage treatment throughout the North.

Sewage Treatment 3 The Town of Hay River continues to extend an invitation to the Northern Working Group of Environment Canada to study the Hay River Wetland System. Our system has been in continuous operation since for almost 50 years and offers a unique, mature treatment site unlike any other.

2008 Sewage Production 608,631.26 cubic metres was pumped from lift stations. The discrepancy between water use and sewage production is mostly a result of volume estimates determined from pump run times in the lift stations and not from additional sources, infiltration notwithstanding. 31,122.53 cubic metres was returned to Great Slave Lake at Station SNP 0053-6 (water return at pumphouse)

Concerns & Commitments For Sewage Comment Agency Concern &/or Commitment Explain discrepancy between water and EC and others Agreed, submitted. sewage volumes Is all the data from SNP 0053-2 EC and others All info submitted in Annual Report submitted? Scope and definition of sewage INAC Agreed disposal facilities Reflect new sewage lagoon in Part D INAC Agreed Lagoon cell removal notification INAC Agreed

Solid Waste Collection Solid waste is collected twice per week by a two-person crew operating a packer truck. Bulky waste disposal is the responsibility of the individual, although some larger items are collected during the annual spring clean-up.

Solid Waste Disposal 1 The solid waste management site is located about 8 km south-east of the Town on the north side of Highway 5. The 150 m x 40 m x 4 m municipal landfill site is compacted daily when possible. Once per week the wastes are covered with clay material. There is partial fencing around the site and access is controlled. A separate 100 m x 200 m bulky waste storage area is used for the disposal of large items and metal wastes. Two locations in the community use used oil as fuel for heat.

Landfill Site

MSW Recycling Liquor Bottles – Tri R Recycling Some home composting by local residents with gardens

MSW Site Rehab A contract was awarded in December 2009 to study the current site and its operation and recommend methods to extend its life. The Town has taken notice of the various comments and address these as part of the study. The Town expects the final report by March 31 st .