Environmental

Pollution Control Studies have been completed for municipalities throughout northern Nova Scotia and Cape Breton. Solid waste studies and designs of solid waste facilities have been successfully constructed for municipal and industrial clients. CJMac presently operate and manage the solid waste landfill for a pulp and paper mill.

CJMac have completed assessments and supervised the remediation of sites contaminated by past use, and oil spills. A 40 hectare site stabilization program was completed for the Province which included erosion control and slope stabilization of water courses, waste dump stabilization, sedimentation ponds and decommissioning activities.

Project: Pomquet SBR

Pomquet SBR and Collection System
Municipality of the County of Antigonish -2002/2003

In 2002 C.J. MacLellan & Associates tendered over 4.5 kilometres of small diameter collection sewer (150mm diameter) and forcemain (75mm diameter) to service the Village of Pomquet. The project included individual pump chambers at those properties that required a pressure flow condition and cleanout chambers at others that flow by gravity to the local sewer.

One large lift station on Taylors road pumps sewage up to the treatment plant confluence manhole, while another on Cove road receives gravity flow than forces sewage back along the gravity line up to the confluence manhole near the treatment plant. An SBR treatment plant designed by ABL Environmental consists of one EQ tank, two reactors and a digester cell with the necessary

components to discharge effluent to the Pomquet harbour via a 450 metre long 150 mm diameter outfall pipe ballasted on the harbour bottom.

The project considered a number of tenders simultaneously with work extending over a one year period at a cost of $1.5 million.

Overall the Municipality is very pleased with the treatment plant and its connecting infrastructure and has on many occasions provided tours of the facility and system for municipal operators, NSEL staff and other interested parties in this technology.

Project: WWTP Biosolids Removal

Project: Antigonish WWTP Biosolids Removal
Client: Town of Antigonish

The Antigonish Sewage Treatment Plant sludge (1996 & 2005) had the initial stage which involved removing sludges from a twenty year old lagoon system prior to rehabilitation with a new raised wall six cell lagoon and a continuous sand filter. The new STP, after six years of operation, had a sludge quantity/quality test program undertaken jointly by ABL Environmental Consultants and C.J. MacLellan & Associates which recommended disposal by dewatering and biosolids composting at the Guysborough landfill.

A tender in late 2004 resulted in dredging and pumping the sludge biosolids through pre-screens, flocculation tank, and twin centrifuges for dewatering, with 220 bone dry tonnes hauling for composting and stabilization. C.J. MacLellan & Associates Inc provided contract administration, inspection. and sampling/testing services to the Town of Antigonish.

Project: Lyons Brook

Lyons Brook Wastewater Collection Project
Municipality of the County of Pictou

Project Description: Lyons Brook Wastewater Collection Project – C.J. MacLellan & Associates completed the pre-servicing report for this area in the Municipality of the County of Pictou in 2005 to service over 375 homes in the Lyons Brook area between the rotary and Scotsburn. The report recommended the use of small diameter pipe technologies and the consideration for individual heat source positive displacement pump stations in concert with some gravity collectors. A series of pumping stations would convey the sewage effluent for treatment at the new Town of Pictou wastewater treatment plant.

The final design tendered in 2008 included five pumping stations, over 28 kilometres of gravity and small diameter pressure sewer. The $6.0 million project required in excess of 80 plan/profile drawings, the first phase tender was awarded in the summer of 2008 and construction activities have commenced.

In parallel the firm completed conveyance design for the Town of Pictou including three new pump stations as well as the structural, site civil, mechanical, & electrical design for the new wastewater treatment plant as sub-consultant with ABL Environmental Consultants .

Project: Havre Boucher

Havre Boucher Wastewater Collection and Treatment Project
Municipality of the County of Antigonish, Nova Scotia

C.J. MacLellan with ABL Environmental Consultants Inc. provided for design and contract administration engineering services for the construction of a replacement wastewater treatment plant in Havre Boucher and the extension of the existing collection system.

CJMac acted as prime consultant responsible for structural, civil, and mechanical design with electrical design completed by SNC Lavalin from Halifax. ABL provided the process design for the treatment plant and Nova Dynamics provided control and SCADA design. The project commenced in the spring of 2009, with construction commencing in the spring of 2010, and commissioning by the end of 2010. The new plant is accommodated on the existing site and utilizes the existing outfall. The existing plant has remained in operation throughout construction. The facility incorporates gravity flow through SBR tanks to digesters with UV disinfection and outfall discharge to Havre Boucher Harbour. The plant is designed to accommodate existing development flows as well as future development to the year 2025. Its maximum capacity is 300,000 gpd. The collection system extension consisted of 1640 m of conventional gravity pipe, 1000 m of forcemain, and a sewage pumping station.

The project construction costs was tendered at $2.92 million with design and contract administration fees at fees at $ 390,000

Project: County of Richmond

District #4 Wastewater Collection & Treatment Pre-Design
Municipality of the County of Richmond

Project Description: District # 4 Wastewater Collection & Treatment Pre-design – The existing District # 4 boundary incorporates the residential areas of West Arichat, Port Royal, St. Mary’s and Janvrin’s Island which were shown to have significant failures with existing wastewater disposal systems that could impact the local environment including water supply wells, fisheries and recreational areas with inadequately treated effluent.

Given the experiences in Walkerton, and the provincial mandates to have wastewater discharges at acceptable levels, the Municipality of the County of Richmond commissioned a pre-design for collection an dtreatment within the four communities. The Intent of the pre-design is to identify the collection system components for conveyance of sewage from over 291 homes and to identify system and process components for the wastewater treatment plant. The Terms of Reference indicated that a new sewage treatment plant is to be constructed and a collection system installed which considers small diameter innovative conveyance system technology.

C.J. MacLellan & Associates completed the pre-design report for this area in the Municipality of the County of Richmond in October of 2009 to service over 291 homes in the four communities which includes individual pump chambers, 38mm to 200mm diameter forcemains, a number of significant water feature crossings, and a Sequencing Batch Reactor Wastewater Treatment Facility with outfall to the ocean waters. Over 10 kilometres of piping alignment required detailed topographic survey to confirm site conditions as well as alignment options for the forcemain system. A separate recirculating sand filter is proposed for Janvrin’s Island.

Project: Sewer Infrastructure

Abercrombie Sewer Infrastructure Project
Municipality of the County of Pictou

In 1998 C.J. MacLellan & Associates undertook the design of sewer collection infrastructure including a lift station and River crossing to service the resident of Abercrombie. This included over 2700 metres

of conventional gravity sewer, 1500 metres of sewage forcemain, a duplex sanitary sewage lift station with SCADA and controls and the East River crossing to connect into the ERPAS sewage treatment plant.

Prior to the construction significant efforts were required in the acquisition of the necessary regulatory approvals, including the

D.F.O. and the Coast Guard.

In 1998 the sewer and associated infrastructure was tendered and constructed. Over 80 homes were be serviced by the system.

The project included individual pump chambers at those properties that required a pressure flow condition and cleanout chambers at others that have gravity flow conditions to the local sewer.

The project was completed at a cost of approximately $800,000 in 1998.