Hydrocarbon Impacts = Incidences des hydrocarbures

Key Publications

Norman Wells Pipeline Project : 1985 report on monitoring of construction and operation   /   Interprovincial Pipe Line (NW) Ltd.
[Edmonton, Alta.] : Interprovincial Pipe Line Ltd., 1985.
vi, 43, [67] leaves : col. ill. ; 29 cm.
Appendices.
References.
ASTIS record 48849.
Languages: English
Libraries: ACU

In 1985, Interprovincial Pipe Line (NW) Ltd. undertook monitoring to determine the effects of the pipeline construction and operation on the environment, the condition of the right-of-way including river crossings and slopes and the condition of the pipeline. The monitoring program and schedule were approved by the National Energy Board in October, 1984. This is the third annual report and describes the results of the monitoring activities IPL has undertaken in the past year. ... The results of the 1985 monitoring programs indicate that the pipeline did not realize any excessive stresses and that no significant environmental impacts have resulted to date from pipeline construction or operations. While pipeline development did generate several minor terrain problems, overall terrain performance was satisfactory. Restoration and maintainance programs undertaken in the summer, 1985 were generally effective. Restoration programs proposed for winter, 1986 will mitigate remaining terrain problems. Nevertheless, continuing concientious monitoring will be necessary to identify terrain changes and allow for early restorative works. (Au)

Norman Wells Pipeline Project : 1986 report on monitoring of construction and operation   /   Interprovincial Pipe Line (NW) Ltd.
[Edmonton, Alta.] : Interprovincial Pipe line Ltd., 1986.
1 v. (various pagings) : ill. ; 29 cm.
Appendices.
References.
ASTIS record 15958.
Languages: English
Libraries: ACU

In 1986, Interprovincial Pipe Line (NW) Ltd. undertook monitoring to determine the effects of the pipeline construction and operation on the environment, the condition of the right-of-way including river crossings and slopes and the condition of the pipeline. The monitoring program and schedule were approved by the National Energy Board in October, 1984. This is the fourth annual report and describes the results of the monitoring activities IPL has undertaken in the past year. ... During 1986, no significant variances from predicted performance were observed in respect of the condition of the right-of-way. Restoration and maintenance work undertaken in summer 1986 was effective. A restoration and maintenance program has been developed for the winter 1987, to mitigate those areas where effects of sufficient magnitude make such actions prudent. (Au)

Norman Wells Pipeline project : 1987 report on monitoring of construction and operation   /   Interprovincial Pipe Line (NW) Ltd.
[Edmonton, Alta.] : Interprovincial Pipe Line (NW) Ltd., 1987.
1 v. (various pagings) : col. ill. ; 29 cm.
Appendices.
References.
ASTIS record 27883.
Languages: English
Libraries: ACU

In 1987, Interprovincial Pipe Line (NW) Ltd. undertook monitoring to determine the effects of the pipeline construction and operation on the environment, the condition of the right-of-way including river crossings and slopes, and the condition of the pipeline. The monitoring program and schedule were approved by the National Energy Board in October, 1984. This is the fifth annual report and describes the results of the monitoring activities IPL has undertaken in the past year. This also is the concluding report with respect to certain aspects of wildlife, raptor, aquatic and revegetation monitoring. Surveys to detect differential settlement of the pipe were undertaken in September, 1987. ... No slope instability problems ocurred during 1987. Restoration works undertaken at certain slopes in winter 1987 appear to have been successful. ... The slope indicator at Christina Creek revealed continued movement although small in magnitude. This location will be studied further again in 1988. ... Efforts to cool five locations with localized heating by removal and replacement of wood chips in order to expose the ground surface to ambient winter temperatures were successful. However, the three sites where wood chips were cooled simply by thinning or snow removal exhibited recurrence of warm temperatures in summer of 1987. These areas will be cooled by wood chip removal and replacement and venting the wood chips. At a few watercourse crossings, insufficient bank armouring and subsidence of ditch line were noted. ... Quantitative wildlife and raptor monitoring studies were undertaken again in 1987. ... Revegetation of the right-of-way continues to be successful. There were certain sites, particularly areas of recently backfilled ditch line, where the monitoring results indicated a need for remedial seeding and a seeding program was undertaken in July 1987. Revegetation trials established on organic terrain in 1987 show that these areas can be made to rapidly support vegetative cover. ... Restoration and maintenance work undertaken throughout 1987 was effective. A restoration and maintenance program has been developed for the winter 1988, to mitigate those areas where effects of sufficient magnitude make such action prudent. (Au)

Norman Wells Pipeline Project : 1988 report on monitoring of construction and operation   /   Interprovincial Pipe Line (NW) Ltd.
[Edmonton, Alta.] : Interprovincial Pipe Line Ltd., 1988.
vi, 48 leaves : ill. (some col.) ; 29 cm.
Appendix.
References.
ASTIS record 48826.
Languages: English
Libraries: ACU

In 1988, Interprovincial Pipe Line (NW) Ltd. undertook monitoring to determine the effects of the pipeline construction and operation on the environment, the condition of the right-of-way including river crossings and slopes, and the condition of the pipeline. The monitoring program and schedule were approved by the National Energy Board in October 1984. This is the sixth annual report and describes the results of the monitoring activities IPL has undertaken in the past year. ... Precipitation events of very significant proportions were experienced during the summer of 1988. The guidebank costructed at Hodgson Creek in the winter of 1986 was washed out; however, the pipe remained fully covered. At the Ochre River pipeline crossing, the banks migrated southward approximately 40 m, and some 30 m of pipe was exposed. Manual inspections of the exposed pipe surface in July and September and an internal inspection using a sizing pig in October indicated that the pipe has not been damaged. A number of restoration altenatives are being evaluated and both crossings will be restabilized in the winter of 1989. ... Only three small cross right-of-way drainages experiences erosion during the summer of 1988. Immediately after the storms, the sites were successfully stabilized using sandbags and diversion ditches. No pipe was exposed at any of these locations and all sites will be fully restored in winter 1989. ... In general, wood chip insulation performance has been in accordance with expectations. ... Quantitative wildlife and raptor monitoring studies were undertaken again in 1988. The data collected indicate that the right-of-way and adjacent land is continuing to be used by local wildlife populations. Revegetation of the right-of-way continues to be successful. No sites were identified where monitoring results indicated a need for remedial seeding. Shrub and tree encroachment onto the right-of-way has become substantial in certain locations. ... Restoration and maintenance work undertaken throughout 1988 were effective. A maintenance program has been developed for the winter to 1989 to mitigate those areas where effect of sufficient magnitude make such action prudent. (Au)

Norman Wells Pipeline Project : 1989 report on monitoring of construction and operation   /   Interprovincial Pipe Line (NW) Ltd.
[Edmonton, Alta.] : Interprovincial Pipe Line Ltd., 1989.
vii, 41 leaves : ill. (some col.) ; 29 cm.
Appendix.
References.
ASTIS record 48827.
Languages: English
Libraries: ACU

In 1989, Interprovincial Pipe Line (NW) Ltd. undertook monitoring to determine the effects of the pipeline construction and operation on the environment, the condition of the right-of-way including river crossings and slopes, and the condition of the pipeline. The monitoring program and schedule were approved by the National Energy Board in October 1984. This is the seventh annual report and describes the results of the monitoring activities IPL has undertaken in the past year. Two programs were implemented to detect differential thaw settlement in 1989. The first program was the prototype run of the "Geopig". The pig is designed to measure pipe geometry which can be used to monitor change in the position of the pipe or change in effective pipe curvature to thaw settlement over the full length of the pipeline. ... The extreme precipitation events of 1988 necessitated the replacement and deep burial of two sections of pipe at the Ochre and Hodgson Creek respectively. Impacts to the aquatic environment as a result of construction activities were negligible. ... Three small cross right-of-way drainages experienced erosion during the summer of 1989 resulting in three sections of exposed pipe. The exposed pipe amounted to less than 10 linear metres total and pipe integrity was not threatened. Two other areas which were repaired as part of the 1989 right-of-way maintenance program require more remedial measures which will be undertaken during the winter of 1990. All sites were stabilized expeditiously using sandbags and diversion berms as an interim measure. The most change in terrain condition since completion of constuction has been the subsidence of the ditchline below the original ground surface. However, the rate of progression of the subsidence of the ditchline is diminishing significantly. A minor amount of backfilling (approximately 2 km) with borrow material, where ditch subsidence was to be in excess of 20 cm, was undertaken in the winter of 1989. ... In general, wood chip insulation performance has been in accordance with expectations. ... Quantitative wildlife and raptor monitoring studies were undertaken again in 1989. The data collected indicate that the right-of-way and adjacent land is continuing to be used by local wildlife populations. Raptor monitoring will not continue in 1990. Revegetation of the right-of-way continues to be successful. ... Shrub and tree encroachment onto the right-of-way has become substantial in certain locations. ... Restoration and maintenance work undertaken throughout 1989 were generally effective. A maintenance program has been developed for the winter to 1990 to mitigate those areas where effect of sufficient magnitude make such action prudent. (Au)

Norman Wells Pipeline Project : 1990 report on monitoring of construction and operation   /   Interprovincial Pipe Line (NW) Ltd.
[Edmonton, Alta.] : Interprovincial Pipe Line (NW) Ltd., 1990.
vii, 42 leaves : ill. (some col.) ; 29 cm.
Appendix.
References.
ASTIS record 48828.
Languages: English
Libraries: ACU

In 1990, Interprovincial Pipe Line (NW) Ltd. undertook monitoring to determine the effects of pipeline construction and operation on the environment, the condition of the right-of-way including river crossings and slopes, and the condition of the pipeline. The monitoring program and schedule were approved by the National Energy Board in October 1984. This is the eighth annual report which describes the results of the monitoring activities IPL has undertaken in the past year. During 1990, no significant variances from predicted performance were observed with respect to the condition of the right-of-way, pipe conditions and the effects of the pipeline on the right-of-way. Overall terrain performances continued to be satisfactory. Restoration and maintenance work undertaken in 1990 were effective. Less than 1 kilometre of subsided ditch was backfilled. Four areas of surface erosion were backfilled and new diversion berms constructed. Minor areas of surface erosion were repaired expeditiously using sand bags and rip-rap. A maintenance program has been developed for the winter of 1991 to mitigate those areas requiring similar action. Two programs were implemented to monitor for thaw settlement. ... No new sections of exposed pipe were observed in 1990. Three sections of exposed pipe reported in 1989 were repaired in 1990 using a combination of split casing, granular material and rock rip rap. These sites have all performed satisfactorily. No slope stability problems occurred in 1990. ... The slope stability indicator at Christina Creek revealed minor movement; however, this slope is still considered stable. Wood chip insulation has performed according to expectations. ... Very few concerns were identified in 1990 in relation to impacts to aquatic resources along the pipeline route. ... Quantitative wildlife and raptor monitoring programs were undertaken again in 1990. ... With the termination of the formal raptor monitoring program in 1989, raptor monitoring will be incorporated into other wildlife monitoring programs undertaken by IPL. Revegetation of the right-of-way continues to be successful. ... In general, terrain has stabilized since construction, as reflected in the reduced scope of the proposed 1991 right-of-way maintenance activities. (Au)

Norman Wells Pipeline Project : 1991 report on monitoring of construction and operation   /   Interprovincial Pipe Line (NW) Ltd.
[Edmonton, Alta.] : Interprovincial Pipe Line (NW) Ltd., 1991.
vii, 51 leaves : ill. (some col.) ; 29 cm.
Appendix.
References.
ASTIS record 48829.
Languages: English
Libraries: ACU

In 1991, Interprovincial Pipe Line (NW) Ltd. undertook monitoring to determine the effects of pipeline construction and operation on the environment, the condition of the right-of-way including river crossings and slopes, and the condition of the pipeline. The monitoring program and schedule were approved by the National Energy Board in October 1984. This is the ninth annual report which describes the results of the monitoring activities IPL has undertaken in the past year. During 1991, no significant variances from predicted performance were observed with respect to the condition of the right-of-way, pipe conditions and the effects of the pipeline on the right-of-way. Overall terrain performances continued to be satisfactory and restoration and maintenance work undertaken in 1991 was effective. Less than kilometre of subsided ditch was backfilled. A drainpipe and drainage ditch were separately installed on two insulated slopes and a surface erosion area was repaired expeditiously using sandbags. ... Two new sections of exposed pipe were observed in 1991. ... At neither location is the integrity of the pipe considered threatened. With the exception of some slopes requiring a more detailed analysis, the majority of wood chip insulated slopes are performed as expected. Ditch line subsidence and tension cracks have occurred on several slopes; however, downslope movement is not a concern. ... In 1991, two continuing programs were implemented for aquatic monitoring. ... No areas of concern were noted with respect to aquatic resources. Quantitative wildlife and raptor monitoring programs were undertaken again in 1991. The data collected indicate that the right-of-way and adjacent land is continuing to be used by local wildlife populations. ... Revegetation of the right-of-way continues to be successful. ... Shrub and tree encroachment on the right-of-way has become substantial in some locations and brushing was required. Brushing will continue for 1992. ... In general, terrain has stabilized since construction, as reflected in the reduced scope of the proposed 1992 right-of-way maintenance activities. (Au)

Norman Wells Pipeline Project : 1992 report on monitoring of construction and operation   /   Interprovincial Pipe Line (NW) Ltd.
[S.l.] : Interprovincial Pipe Line (NW) Ltd., 1992.
vi, 40, [16] leaves : ill. (some col.) ; 29 cm.
Appendices.
References.
ASTIS record 33776.
Languages: English
Libraries: ACU

In 1992, Interprovincial Pipe Line (NW) Ltd. undertook monitoring to determine the effects of pipeline construction and operation on the environment, the condition of the right-of-way including river crossings and slopes, and the condition of the pipeline. The monitoring program and schedule were approved by the National Energy Board in October 1984. This is the tenth annual report which describes the results of the monitoring activities IPL has undertaken in the past year. During 1992, no significant events were observed with respect to the condition of the right-of-way, pipeline conditions and the effects of the pipeline on the right-of-way. Overall terrain performances continued to be satisfactory and restoration and maintenance work undertaken in 1992 was effective. The maintenance program developed for the winter of 1993 will address areas of concern identified during the current reporting period. An inertial geometry tool run was conducted from Wrigley to Zama early in 1992. The pig data was analyzed using a newly developed Geocurve program. The program provides a comparison of the data from two different runs for selected locations. ... Two new sections of exposed pipeline were observed in 1992. One section was repaired during the summer months and one section will require further restoration efforts as part of the 1993 right-of-way maintenance program. At neither location is the integrity of the pipeline considered threatened. In 1992, significant amount of effort was directed towards geotechnical monitoring and soil-pipeline interaction on slopes. The result was the production of detailed reports on slope stability. No major slope stability problems have occurred and the majority of slopes still continue to perform in a satisfactory manner. In 1992, two continuing programs were implemented for aquatic monitoring. In one program, river bed profiles of the Mackenzie and Great Bear River were surveyed. Both profiles indicate sufficient cover over the pipeline. In the second program, a low level helicopter reconnaissance was completed of all water crossings. No areas of concerns were noted with respect to aquatic resources. (Au)

Norman Wells Pipeline Project : 1993 report on monitoring of construction and operation   /   Interprovincial Pipe Line (NW) Ltd.
[Edmonton, Alta.] : Interprovincial Pipe Line (NW) Ltd., 1993.
iii, 18 leaves : ill. (some col.) ; 29 cm.
Appendix.
ASTIS record 48830.
Languages: English
Libraries: ACU

In 1982, Interprovincial Pipe Line (NW) Ltd. undertook monitoring to determine the effects of pipeline construction and operation on the environment, the condition of the right-of-way, including river crossings and slopes, and the condition of the pipeline. The monitoring program and schedule were approved by the National Energy Board in October 1984. This is the eleventh annual report which describes the results of the monitoring activities IPL (NW) has undertaken in the past year. ... As a result of the leak at Kp 491 in 1992, a section of pipe was exposed and replaced in order to facilitate thorough investigation of the failure. ... An inertial geometry tool run was conducted from Norman Wells to Wrigley in November 1992. The pig data was analyzed using the Geocurve program. The program provides a comparison of the data from two different runs for selected locations. This information, in combination with geotechnical data has determined four slopes which require remedial action in the winter of 1993-94. Slope drains will be installed at Slopes 44, 45, 48B and 142, to drain water away from the pipeline right-of-way, decreasing pore pressure and increasing the slope factor of safety. On July 29, 1993, the National Energy Board accepted IPL (NW)'s application to revise the temperature restrictions on crude oil receipts at the Norman Wells Pump Station. ... Revegetation of the right-of-way continues to be successful. No sites were identified where monitoring results indicate a need for remedial seeding. Natural revegetation of organic terrain is increasing. Shrub and tree encroachment on the right-of-way has become substantial in some locations and brushing was required. Brushing will continue for 1994. The results of the 1993 monitoring programs indicate that no significant environmental effects have resulted from the construction and operation of the pipeline. In general, terrain has stabilized since construction, as reflected in the reduced scope of the proposed 1994 right-of-way maintenance activities. (Au)

Norman Wells Pipeline, 1994 report on monitoring of construction and operation   /   Interprovincial Pipe Line (NW) Ltd.
[Edmonton, Alta.] : Interprovincial Pipe Line (NW), 1994.
i, 38 leaves : ill. (some col.) ; 28 cm.
Appendix.
ASTIS record 38314.
Languages: English
Libraries: ACU

In 1982, Interprovincial Pipe Line (NW) Ltd. undertook monitoring to determine the effects of pipeline construction and operation on the environment, the condition of the right-of-way (ROW), including river crossings and slopes, and the condition of the pipeline. The monitoring program and schedule were approved by the National Energy Board (NEB) in October 1984. This is the twelfth annual report which describes the results of the monitoring activities IPL (NW) has undertaken in the past year. On July 29, 1993, the NEB accepted IPL (NW)'s application to revise the temperature restrictions on crude oil receipts at the Norman Wells Station. In August of 1993, IPL (NW) began receiving crude oil based on the revised oil temperature limitations, giving a partial seasonal reduction of the chillers in 1993 and a full seasonal reduction in 1994. The revised crude oil temperature limitations have resulted in very little visual effect on the slopes and overland right-of-way in relation to stability. IPL (NW) has and will continue to adhere to the specific monitoring and reporting requirements contained in Order MO-19-93. A high resolution MFL internal inspection tool and an inertial geometry tool were run from Norman Wells to Zama in the fall of 1994. The high resolution MFL international data will show any indications of pipeline anomalies and allow IPL (NW) to develop a baseline of data. The inertial geometry tool results will be compared with previous data to assess the stability of the pipeline. Effects of the revised crude oil temperature on the pipeline, if any, will be apparent, with the completion of the first full season of revised crude oil temperatures. Results from these surveys will be used to develop the corrosion and dent program for IPL (NW). Slope drains were installed on Slopes 44, 45 and 48B in February 1994. ... The effectiveness of the slope drains has been demonstrated by a noticeable reduction in pore pressure. This, combined with determination of the depth of thaw under the wood chips, will allow IPL (NW) to recalculate the factor of safety for these slopes. Forest fires in the area of the Norman Wells Pipeline ROW, while not posing a threat to the integrity of the below ground facilities, did put the above ground facilities at risk. Remedial measures were required to Slope 55 to revegetate and stabilize the slope. Other sites required back burning, hand clearing, or sprinklers to protect them from the threat of the forest fires. Results of the 1994 monitoring programs indicate that no other significant events were observed with respect to the condition of the ROW, pipeline conditions, and the effects of the pipeline on the ROW. Overall, terrain performance continued to be satisfactory and restoration and maintenance program developed for 1995 will address areas of concern identified during the current reporting period. (Au)

Norman Wells Pipeline 1995 report on monitoring of construction and operation   /   Interprovincial Pipe Line (NW) Ltd.
[S.l. : Interprovincial Pipeline (NW) Ltd.], 1995.
iv, 44 leaves : col. ill. ; 29 cm.
Appendix.
ASTIS record 38382.
Languages: English
Libraries: ACU

... Interprovincial Pipe Line (NW) Ltd., under the terms and conditions of various regulatory documents, is required to monitor and report the effects of pipeline construction and operation on the environment, the condition of the ROW, and the condition of the pipeline. The monitoring program and schedule were approved by the National Energy Board in October 1984 as part of the Certificate of Public Convenience and Necessity No. OC-35. Monitoring is also conducted in accordance with an environmental agreement with the Minister of Indian Affairs and Northern Development and the easement agreement with the Commissioner of the Northwest Territories. In October 1984 the National Energy Board approved the IPL programs and schedule for monitoring. The National Board accepted IPL (NW)'s proposal to revise oil temperature limitations, and issued Order Mo-19-93. The Board has directed IPL (NW) and INAC, and IPL (NW)'s obligations pursuant to Conditions 4 and 22 of Certificate OC-35 dated 6 November 1981. IPL has been a participant in a joint research and monitoring working group consisting of investigators from various departments of the government of Canada and other government agencies. This is the thirteenth annual report and describes the results of the monitoring activities IPL (NW) has undertaken over the past year. Since most programs were initiated in 1984, this report largely addresses the twelfth year observations and results. ... (Au)

Interprovincial Pipe Line (NW) Ltd. Norman Wells to Zama pipe line : 1996 report on monitoring of construction and operation   /   Interprovincial Pipe Line (NW) Ltd.
[S.l. : s.n.], 1996.
i, 31, 2 leaves : ill. (some col.) ; 28 cm.
Cover title.
Appendix.
References.
ASTIS record 40558.
Languages: English
Libraries: ACU

In 1982, Interprovincial Pipe Line (NW) Ltd. (IPL(NW)) undertook monitoring to determine the effects of pipeline construction and operation on the environment, right-of-way and pipeline. The monitoring program and schedule were approved by the National Energy Board (NEB) in October 1984. This is the 14th annual report which describes the results of the monitoring activities IPL(NW) has undertaken in 1996. On July 29, 1993, the NEB accepted IPL(NW)'s application to revise the temperature restrictions on the crude oil receipts at the Norman Wells Station. In August 1993, IPL(NW) began receiving crude oil based on the revised oil temperature limitations. This gave a partial seasonal reduction of ESSO's chillers in 1993 and a full seasonal reduction in each full year since. The revised crude oil temperature limitations have resulted in minimal visual effect on the slopes and overland right-of-way in relation to stability, IPL(NW) has and will continue to adhere to the specific monitoring and reporting requirements contained in the NEB Board Order MO-19-93. An inertial geometry tool (GEOPIG) was run from Norman Wells to Mackenzie Highway Station in the month of September 1996 with the purpose of detecting pipe movement associated with slope instability and thaw settlement. The GEOPIG results will be compared with previous runs to assess the right-of-way instability of the pipeline. The effects of the revised crude oil temperature regime will be apparent with the completion of the third full season of the revised crude oil temperatures. AGRA Earth and Environment (AEE) conducted a geotechnical review on several slopes from Norman Wells to the Mackenzie River crossing. This review includes a detailed slope reconnaissance, slope probing program and an analysis of field data. A brief description of the slopes assessed by AEE appears in Section 4.0, Terrain Monitoring. The detailed geotechnical assessment will be presented at the Norman Wells Pipe Line Annual Geotechnical and Environmental Review scheduled for January 1997. The pipe heave at Kp 5.4 has been monitored for several years. In the past, there were concerns that there may be movement of the existing survey monument that could affect the accuracy of the survey data and corresponding pipe strain calculations. In 1996 a permanent survey monument was installed at Kp 5.4 to rectify this problem. Further survey monitoring is required at Kp 5.4 to develop pipe movement trends with respect to the new survey monument. UMA Geomatics carried out Bathymetric surveys at the Great Bear and Mackenzie River crossings in July 1996. The purpose of this survey was to determine the amount of cover over and adjacent to the pipeline, as well as to identify any changes in the shape and elevation of the river beds. Overall, it was determined that adequate pipe cover is being maintained. Kp 656.7 was excavated, examined and repaired as part of the 1996 Corrosion and Dent Program. No anomalies were found at this location. Results of the 1996 monitoring programs have shown that no significant events were observed with respect to the effects of the pipeline construction and operation on the environment, right-of-way and pipeline. Overall, the terrain performance continued to be satisfactory and the restoration and maintenance work undertaken in 1996 was successful. The maintenance program developed for 1997 will address areas of concern identified during the current reporting period. (Au)

1997 report : monitoring of construction and operation, Norman Wells - Zama pipeline   /   Interprovincial Pipe Line (NW) Ltd.
Edmonton, Alta. Interprovincial Pipe Line (NW) Ltd., 1997.
28 leaves : ill. (some col.) ; 28 cm.
Two folded illustrations.
Appendix.
References.
ASTIS record 42307.
Languages: English
Libraries: ACU

In 1982, Interprovincial Pipe Line (NW) Ltd. (IPL(NW)) undertook monitoring to determine the effects of pipeline construction and operation on the environment, right-of-way and pipeline. The National Energy Board (NEB) approved the monitoring program and schedule in October 1984. This is the 15th annual report which describes the results of the monitoring activities IPL(NW) has undertaken in 1997. On July 29, 1993, the NEB accepted IPL(NW)'s application to revise the temperature restrictions on the crude oil receipts at the Norman Wells Station. In August 1993, IPL(NW) began receiving crude oil based on the revised oil temperature limitations. This gave a partial seasonal reduction to Imperial Oil Resources Limited's (IOL) chillers in 1993 and a full seasonal reduction in each full year since. The revised crude oil temperature limitations have resulted in minimal visual effect on the slopes and overland right-of-way in relation to stability. IPL(NW) has and will continue to adhere to the specific monitoring and reporting requirements contained in the NEB Board Order MO-19-93. ... An inertial geometry tool (GEOPIG) was run from Norman Wells to Wrigley Station in the month of September 1997 with the purpose of detecting pipe movement associated with slope instability and thaw settlement. The GEOPIG results will be compared with previous runs to assess the right-of-way instability of the pipeline. AGRA Earth and Environment (AEE) inspected the entire right-of-way from Norman Wells to Zama, and conducted a geotechnical review on several slopes along the right-of-way. This review included a detailed slope reconnaissance and an analysis of field data. A brief description of the slopes assessed by AEE appears in Section 5.0, Slope Monitoring. The detailed geotechnical assessment will be presented at the Norman Wells Pipe Line Annual Geotechnical and Environmental Review scheduled for February 1998. The pipe heave at Kp 5.1 has been monitored for several years. In the past, there were concerns that there may be movement of the existing survey benchmark that could affect the accuracy of the survey data and corresponding pipe strain calculations. In 1996 a permanent benchmark was installed at Kp 5.1 to rectify this problem. Further survey monitoring was undertaken in 1997 to provide pipe movement trends with respect to the new benchmark. Kp 461.696 was excavated, examined and repaired as part of the 1997 Corrosion and Dent Program. The 1996 GEOPIG data was analyzed which resulted in a decision to examine a dent at the above noted location. ... Results of the 1997 monitoring programs have shown that no significant events were observed with respect to the effects of the pipeline construction and operation on the environment, right-of-way and pipeline. Overall, the terrain performance continued to be satisfactory and the restoration and maintenance work undertaken in 1997 was successful. The maintenance program developed for 1998 will address areas of concern identified during the current reporting period. (Au)

Monitoring of construction & operation, Norman Wells - Zama Pipeline : 1998 report   /   Enbridge Pipelines (NW) Inc.
[Edmonton, Alta.] : Enbridge Pipelines (NW) Inc., 1998.
ii, 22, 3 leaves : ill. (some col.) ; 28 cm.
Cover title.
Three folded ill.
Appendix.
References.
ASTIS record 48825.
Languages: English
Libraries: ACU

In 1982, Enbridge Pipelines (NW) Inc. (fomerly Interprovincial Pipe Line (NW) Ltd.) undertook monitoring to determine the effects of pipeline construction and operation on the environment, right-of-way and pipeline. The National Energy Board (NEB) approved the monitoring program and schedule in October 1984. This is the 16th Annual Report, which describes the results of the monitoring activities Enbridge Pipelines (NW) has undertaken in 1998. ... A Geometry Inspection Tool (GEOPIG) was run from Norman Wells to Zama in the month of September 1988 with the purpose of detecting pipe movement associated with slope instability and thaw settlement. The GEOPIG results will be compared with previous runs to assess the right-of-way instability of the pipeline. AGRA Earth and Environmental Ltd. (AEE) inspected the majority of the right-of-way from Normans Wells to Zama, and conducted a geotechnical review on several slopes and sites. This review included a detailed slope reconnaissance and an analysis of field data. ... The pipe heave at KP 5.1 has been monitored for several years. ... Enbridge Pipelines (NW) Inc. continues to monitor the pipe heave through the monthly surveys in order to see the effects of the remediation on the pipeline. ... An investigative dig was conducted during the month of February 1998 at KP 318. This dig confirmed the presence of the buckle, and Enbridge Pipelines Inc. along with AEE and representatives of the University of Alberta are determining the cause of this buckle. A report was prepared and submitted to the NEB in September 1998. Since then, a second buckle has been located at KP 300. This buckle was also confirmed in October 1998 by an investigation dig. ... Results of the 1998 monitoring program have shown that no significant events were observed with respect to the effects of the pipeline construction and operation on the environment and right-of-way. Overall, the terrain performance continued to be satisfactory and the restoration and maintenance work undertaken in 1998 was successful. The maintenance program developed for 1999 will address areas of concern identified during the current reporting period. (Au)

Monitoring of construction & operation, Norman Wells - Zama Pipeline : 1999 report   /   Enbridge Pipelines (NW) Inc.
Edmonton, Alta. : Enbridge Pipelines (NW) Inc., 1999.
ii, 34 leaves : ill. (some col.), (2 folded) ; 28 cm.
Cover title.
Appendix.
References.
ASTIS record 46802.
Languages: English
Libraries: ACU

... In 1982, Enbridge Pipelines (NW) Inc. undertook monitoring to determine the effects of pipeline construction and operation on the environment, right-of-way and pipeline. The National Energy Board (NEB) approved the monitoring program and schedule in October 1984. This is the 17th Annual Report, which describes the results of the monitoring activities Enbridge Pipelines (NW) Inc. has undertaken in 1999. ... Since most of the programs were initiated in 1984, this report addresses the 16th year of observation and results. ... An inertial geometry tool (GEOPIG) was run from Norman Wells to Wrigley in the month of September 1999 with the purpose of detecting pipe movement associated with slope instability and thaw settlement. ... AGRA Earth and Environmental (AGRA) inspected the majority of the right-of-way from Norman Wells to Fort Simpson, and conducted a geotechnical review on several slopes and sites along the right-of-way. ... The detailed geotechnical assessment will be presented at the Norman Wells Pipeline Annual Geotechnical Review scheduled for February 2000. The pipe heave at KP 5.1 has been monitored for several years. From the recommendation of AGRA a remediation plan was carried out at KP 5.1 in December 1997. Enbridge Pipelines (NW) Inc. continues to monitor the pipe heave through the monthly surveys in order to see the effects of the remediation on the pipeline. As well KP 4.7 has been uplifting in a similar fashion. Therefore, in December 1998, Enbridge Pipelines (NW) Inc. hauled in select material that was placed over the pipeline in order to re-establish adquate soil cover. Since December 1997 a total of three locations have been identified to contain wrinkles. Two of the sites, KP 318 and KP 300, had the wrinked sections of pipe cut out and replaced with heavy walled pipe. ... Another anomaly that was identified by the 1998 GEOPIG run was a dent located (seven o'clock position) at KP 488.745. By comparing the 1998 GEOPIG data to the previous 1996 data it was obsreved that the dent had grown. Enbridge Pipelines (NW) Inc. excavated the site in March 1999, at which time it was verified that the pipeline was settling onto a large rock directly causing the dent. At the time of remediation, the rock was removed, the dent sleeved and the site backfilled with select material. Through ongoing assessment of conscientious monitoring and surveillance programs, several locations were identified in need of mitigation. These locations were addressed in 1999 with the determined necessary repairs and remediation being successfully completed. ... The maintenance program developed for 2000 will address areas of concern identified during the current reporting period. (Au)

Monitoring of construction & operation, Norman Wells - Zama Pipeline : 2000 report   /   Enbridge Pipelines (NW) Inc.
[Edmonton, Alta.] : Enbridge Pipelines (NW) Inc., 2000.
36 p. : ill. (some col.) ; 28 cm.
Cover title.
Some folded illustrations.
Appendix.
ASTIS record 47652.
Languages: English
Libraries: ACU

In 1982, Enbridge Pipelines (NW) Inc. undertook monitoring to determine the effects of pipeline construction and operation on the environment, right-of-way and pipeline. The National Energy Board (NEB) approved the monitoring program and schedule in October 1984. ... This is the 18th Annual Report and describes the results of the monitoring activities Enbridge Pipelines (NW) Inc. has undertaken in 2000. ... An inertial geometry tool (GEOPIG) was run from Norman Wells to Mackenzie in the month of September 2000 with the purpose of detecting pipe movement associated with slope instability and thaw settlement. The GEOPIG results will be compared with previous runs to assess the right-of-way instability of the pipeline. Also the GEOPIG will be used to monitor KP 300, KP 311 and KP 318 to ensure no bending strains are re-occurring. AMEC Earth & Environment (AMEC) inspected the majority of the right-of-way from Norman Wells to Fort Simpson, and conducted a geotechnical review on several slopes and sites along the right-of-way. This review included a detailed slope reconnaissance and an analysis of field data. ... The pipe heave at KP 5.1 has been monitored for several years. From the recommendation of AMEC a remediation plan was carried out at KP 5.1 in December 1997. Enbridge Pipelines (NW) Inc. continues to monitor the pipe heave through the monthly surveys in order to see the effects of the remediation on the pipeline. As well KP 4.7 has been uplifting in a similar fashion. Therefore, in December 1998 Enbridge Pipelines (NW) Inc. hauled in select material that was placed over the pipeline in order to re-establish adequate soil cover. Enbridge Pipelines (NW) Inc. continues to enhance the monitoring and surveillance program to ensure that problems are identified as they develop, thereby allowing for early remedial actions to take place. The maintenance program developed for 2001 will address areas of concern identified during the current reporting period. (Au)

Monitoring of construction & operation, Norman Wells - Zama Pipeline : 2001 report   /   Enbridge Pipelines (NW) Inc.
[Edmonton, Alta.] : Enbridge Pipelines (NW) Inc., 2001.
31, ii p. : ill. (some col.) ; 28 cm.
Cover title.
Appendix.
ASTIS record 48781.
Languages: English
Libraries: ACU

In 1982, Enbridge Pipelines (NW) Inc. (Enbridge) undertook monitoring to determine the effects of pipeline construction and operation on the environment, right-of-way and pipeline. The National Energy Board (NEB) approved the monitoring program and schedule in October 1984. This is the 19th annual report that describes the results of the monitoring activities undertaken by Enbridge in 2001. ... Enbridge conducted an Inertial Geometry Inspection Survey with the GEOPIG from Norman Wells to Wrigley (KP 0 to KP 336, respectively) in September 2001. The purpose of this survey was to monitor bending strain, identify areas of pipe movement, and detect/measure pipe wall deformations. The 2001 GEOPIG data assessment is underway and shall be presented in the 2001 Slope Geotechnical Assessment report. Enbridge accompanied by AMEC Earth and Environmental (AMEC) undertook, in September 2001, a detailed slope and right-of-way reconnissance along the pipeline route. Sites visited during the Norman Wells to Zama reconnaissance included slopes and overland areas along and off the right-of-way. In general terms, no new slope stability issues of significance arose during 2001, and the slopes and right-of-way appear to be reaching a general equilibrium. ... UMA Geomatics conducted a Bathymetric Survey at the Great Bear River and Mackenzie River crossings in June 2001. Past surveys were conducted in 1992 and 1996. The objectives of the survey were: determine the amount of cover existing over the pipeline located in the river bed; monitor the river bed immediately adjacent to the pipeline to intercept movement of scour holes towards the pipeline; and identify changes in the river bed contours that may jeopardize the integrity of the pipeline. Adequate pipe cover is being maintained overall, with the exception of a channel located in the vicinity of the southern bank of the Mackenzie River. In consequence of this observation, Enbridge plans to conduct a 2002 Bathymetric Survey at the Mackenzie River. ... The 2002 proposed Right-of-Way Maintenance Program addresses such issues identified during the current reporting period along with routine maintenance undertakings. (Au)

Monitoring of construction & operation, Norman Wells - Zama Pipeline : 2002 report   /   Enbridge Pipelines (NW) Inc.
[Edmonton, Alta.] : Enbridge Pipelines (NW) Inc., 2002.
33, ii p. : ill. (some col.) ; 28 cm.
Cover title.
Appendix.
ASTIS record 50636.
Languages: English
Libraries: ACU

In 1982, Enbridge Pipelines (NW) Inc. (Enbridge) undertook a monitoring program to determine the effects of pipeline construction and operation on the environment, right-of-way and pipeline for the Norman Wells Pipeline system. The National Energy Board (NEB) approved the monitoring program and schedule in October 1984. This report describes the results of the monitoring activities undertaken by Enbridge in 2002 and represents the 20th time this annual report has been produced. ... As part of the guidelines set out by the Board Order, Enbridge conducted an annual Inertial Geometry Inspection Survey with the GEOPIG inspection tool. The entire pipeline extending from Norman Wells to Zama (KP 0 to KP 869, respectively) was inspected in 2002, with the GEOPIG run occurring in September. The purpose of this survey was to identify areas of pipe movement, monitor bending strain, and detect/measure pipe wall deformations. The 2002 GEOPIG data assessment is underway and shall be presented in the 2002 Geotechnical Assessment report and discussed at the 2002 Geotechnical Review Meeting scheduled in February 2003. Enbridge, accompanied by AMEC Earth and Environmental (AMEC), undertook a detailed slope and right-of-way reconnaissance along the pipeline route in September 2002. Sites visited during the Norman Wells to Zama reconnaissance included slopes and overland areas along and off the right-of-way. In general terms, no new slope stability issues of significance were identified during the 2002 reconnaissance and monitoring program, with the slopes and right-of-way performing as per design expectations. A brief description of the 2002 slope assessment appears in Section 5, Slope Monitoring. The 2002 Geotechnical Slope Assessment report is currently in preparation and will be presented at the annual Geotechnical Review Meeting. ... UMA Geomatics conducted a Bathymetric Survey at the Mackenzie River crossings in June 2002. Past surveys were conducted in 1992, 1996 and 2001. The objectives of the survey were to: determine the amount of cover existing over the pipeline located in the river bed; monitor the river bed immediately adjacent to the pipeline to intercept movement of scour holes towards the pipeline; and identify changes in the river bed contours that may jeopardize the integrity of the pipeline. Adequate pipe cover is being maintained overall along the length of the crossing, with an area identified for continued monitoring located in the vicinity of the river. As a proactive measure Enbridge is exploring potential remedial measures to increase the thickness of cover at this location. Highlights of the 2002 Bathymetric Survey appear in Section 4, Terrain Monitoring. ... The 2003 proposed Right-of-Way Maintenance Program addresses such issues identified during the current reporting period along with routine maintenance undertakings. (Au)

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