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PHASE Iff
FINRZ COMPARISON OF POTENTIAL SOURCES COhMJNLTY GRANULAR MWAGEMENT PLAN
TUKTOYAKT'UK, N.W.T.
Prepared For: GOVERNMENT OF THE NORTHWEST TERRITORIES
DEPARTMENT OF PUBLIC WORKS HIGHWAYS DIVISION
YELLOWRNIFE, N.W.T.
Prepared By:
Hardy BBT L h i t e d
CALGARY ALBERTA
May, 1987
CG14096
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1.0
2.0
3.0
4.0
INTRDDUCTION
REVIEW OF STUDY
Hardy BET Limited CONSULTING ENGINEERING 8 PROFESSIONAL SERVICES
TABLE OF CONTENTS
Page
COMPARISON OF POTENTIAL SOURCES
3.1 Ehbankment Material 3.2 Sur face Material
RECOMMENDED GRANULAR SOURCES
1
1
8
8
10
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1.0 INTRODUCTION
The Highways Division of the G.N.W.T. Department of Public
Works and Highways have commissioned a study to develop a granular management plan for the community of Tuktoyaktuk, N.W.T. The granular requirements have been defined as 400,000 m3 of embankment fill and 100,000 m3 of surface material over the next 20 years. The study is being conducted in four Phases and this report concludes Phase 111,
This report briefly summarizes the previous Phases of the study, presents the process of elimination that has occurred, and summarizes the results of the Phase 111 investigation of Source 155. A concluding discussion is presented on the potential sources. Recommendations are made for the supply of both embankment and surface materials for the Tuktoyaktuk comun i ty .
2.0 REVIEW OF STUDY
The Phase I report reviewed all previous community and regional granular studies. The report identified 35 potential granular sources within 50 km of Tuktoyaktuk, plus Ya-Ya Lakes which is about 75 km away (see Table in Appendix " A " ) . Of
these, 24 were considered good or favourable prospects for granular materials. The other 12 sources were considered unsuitable with respect to distance/access, quality/quantity and environmental considerations. During a July, 1986
community meeting, 6 of the good or favourable prospects were eliminated due to local concerns (Sources 156, 157, 1S9 , 160, 161, L 169) , as reported in the Phase I report dated July, 1986
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Air-photo interpretation i n Phase 11, identified numerous small potential granular sources wi th in 10 to 20 km, southeast
of the community, F i e l d reconnaissance i n September 1986,
confirmed several small, shallow granular sources i n the area,
identified as Sources 181, 183 and 184 (Plate 1 i n map
pocket). I t was proposed that a Phase SI1 Field Investigation
should explore these small deposits, Sources 181, 183 and 184
as well as Source 155 as the more attractive potential sources as yet unproven.
The relative economics were investigated for each of the
potential sources st i l l being considered following Phase 11. It was decided a t t h i s stage to exclude any deposits greater
than 30 km from Tuktoyaktuk unless good quality was already
established or access was feasible by ice road. Also excluded were Sources 158 and 162 for the following reasons:
Source 158 (Offshore shoals)
Very limited data for these two shoals suggests sand w i t h
gravel near the surface. Permafrost may be present.
Although not ruled out earlier i n the s tudy it has not
been given serious consideration. T h i s deposit is not
recommended primarily because the water depth is Phallaw
f o r dredging. Also there are problems associated w i t h
handling and stockpiling of dredged sands.
Source 162 (Tuk Harbour)
There are zones w i t h i n this source that have fair quality
granular material. The sediments dredged for the water storage reservoir may not have included the better quality
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sand and gravel. Never-the-less, the majority of the
material is marginal for road embankment. Given the
problems of handling, stockpiling and draining dredged materials and the problems of compacting poorly graded
materials, t h i s deposit is not recommended.
The sources actually considered i n the relative economic study
and the relative costs obtained are summarized below. Refer
to Appendix "8" for more detai ls on the cast information
received .
Embankment Avg. Haul Material COS t , /m3
Surface Avg. Haul Material costr/m3
181,183,184 $28 .OO 177 30 50 1 5 5 31.50 211 29.00
168 $ 33 .00 155 29.70
Ya-Ya 32.00
As indicated i n Appendix 'B", there was a wide range and some inconsistency i n the prices submitted. I t is not certain that
Contractors were quoting an all-inclusive price as requested.
I t is also suspected that contractors quoted high costs for unfamiliar sources. These factors reduce the rel iabi l i ty of the cost comparison, however, i t is clear there is not a major
difference between the deposits. The potential economical benefits of the closet Sources 181, 183 and 184 were largely
offset by additional work involved i n developing small sources.
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A t a February 1987 community meeting it was agreed that there
was not a strong economic benefit to favour the close
deposits. I t was also considered undesirable to have many
small disturbed areas. Source 184 was not ruled outl however,
i t was not expected to be more desirable than Source 177. I t
was therefore decided to d r i l l only Source 155 as a potential
source for embankment and surface material for the community.
A record of t h i s February meeting is included i n Appendix "C".
The Phase 111 dri l l ing conducted i n March 1987 has proven
considerable quantities of fa i r to good granular material. The complete details of t h i s investigation are reported
separately. I n summary, a 1 to 3 m layer of granular material
has been proven over a total area i n the order of 500,000 m 2 . The volume of granular material is judged to be about
800,000 m3. I t is expected that more granular materials exist i n similar terrain features i n the vicinity of those
investigated . The distribution of the various classes of material proven i n
each area of Source 155 (see Figure 1) are presented i n Table 1. The classification used is based on a system used i n
regional studies by D.I.A.N.D. and is shown on Table 2.
Generally speaking, the Class 2 material is very good gravel
and sand. Some of the gravel tested actually qualifies as
Class 1 material and could be suitable for concrete aggregate. T h i s better qual i ty gravel is found more i n the south deposit,
Much of the north deposit is Class 3 material. T h i s includes
some well graded sand and gravel w i t h a fairly h igh fines
content that is suitable for surfacing material.
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TUKTOYAKTUK , NWT H d y SET Limkd CONSULTING FNGINITRINC L PROfESSIONAL *wla6 LOCATION OF DEPOSITS
155 NORTH AND 155 SOUTH CG 14096 FIGURE I
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BORROW SOURCE 155
PROVEN QUANTITIES OF GRANULAR MATERIALSr m 3
i I
I E I 1
155 NORTH
Class 2 Class 3 Class 4
47,000 312,000
29 I 0 0 0
TOTAL (155 North) 388,000
TOTAL Class 2 and 3 359,000
155 SOUTH
Class 2 Class 3 Class 4
TOTAL Class 2 and 3 502,000
TOTAL - SOURCE 155
Class 2 Class 3 Class 4
TOTAL
330 1000 531,000 42,000
903 IOOO
TOTAL CLASS 2 and 3 861 IO00
TABLE 2
TURTOYAKTUK GRANULAR KWAGEHENT PLAN CLASSIFICATIa OF GRANULAR MATERIALS
~~~ ~~~~ ~ ~
Source General Minimum Technical Suggested Quality Description Ident i f ica t ion Uses
Description of Haterial Parameters of Materials
(1) Excellent Well graded gravels and sands suitable for use as aggregates with a minimum of processing. ~ 5 % f ines
Petrographic Number - 160 =x. Los Angeles Abrasion Loss - 35% max. Soundness Loss (Magnesium Sulphate] - 12% max. and meeting other requirements of CSA A23.1 - 1973
Portland Cement Concrete, Asphaltic Concrete, Masonry Sand, Concrete B l o c k , Surface Treatment and m f i n g Aggregate.
I 3 ) Fai r
Graded sands and gravels with varying quant i t ies of silt. ~ 1 0 % fines
Poorly graded sands and gravels with or without substantial silt oontent. ~ 2 0 % f ines
Poorly graded granular soils of high silt content, possibly containfng very weak par t i c l e s and deleterious materials. ,20% f ines
Petrographic Number - 200 max. Los Angeles Abrasion Loss - 60% wax. Fines greater than 10% passing the 200 sieve can be removed w i t h minimum of processing
Petrographic Number - 250 max. Can be processed to meet loca l f r o s t s u s c e p t i b i l i t y c r i t e r i a
N i l
Granular base and subbase. Winter sand backfi l l for trenches and slabs. Fads for structures.
Granular subbase. General back f i l l material, pads for equipment.
General non-structural f i l l .
NOTE: Based on c lass i f ica t ion developed by DIAND
Moisture content ideally ~ 1 0 % ; i f moisture content 10-208; requires drying before use.
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3 . 0 COMPARISON OF POTENTIAL SOURCES
A t this stage of the study the potential sources still being
considered are a3 follows:
Embankment Material
177 155 211
Surface Material
The following sections briefly discuss each of these sources.
The complete details on these deposits a m contained in the
reports summarized i n the L i s t of Exist ing Reports a t the end
of this report. Section 4 presents the recommendations regarding the sources to consider for the community granular
supply
The potential concerns w i t h high ice contents of massive ice
at depth are common to most of the deposits and is not
expected to be a deciding factor between deposits. T h i s
matter will be discussed i n more d e t a i l i n a subsequent source
development plan.
3.1 WANKMENT MATERIAL
Source 177
T h i s deposit contains fa ir quality sand with some gravel. I t has been considered as a reasonable source for
embankment material for some time. Much of the deposit contains high moisture contents. Therefore it is probably
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hard bonded below the active layer. Being predominantly a
sand w i t h considerable silt (5 to 32%) it may not drain
readily. This source is not given prime consideration.
Source 155
There is much fa i r to good quality granular material i n
this deposit. Most of the sand and the poorly graded gravels would be quite suitable for embankment f i l l .
Moisture contents tend to increase wi th depth and deeper deposits My be too hard bonded for excavation. There is
some massive ice beneath the south deposit. A surface layer i n the order of 1 rn th ick could probably be removed
quite eas i ly i n a f i r s t season of development w i t h another
similar thickness removed after allowing for drainage i n the new active layer.
Source 211
The nor them portion of t h i s deposit has been worked
recently and proved to be almost pure sand w i t h very l i t t l e gravel. M o ~ e recent drilling for DIAND (=A 1986)
has proven some well graded rand w i t h some gravel,
however, the majority of the material is a fine uniform
sand. Moisture contents are high a t depth w i t h frequent massive ice. Excavation of the top 1.5 m is considered
feasible in a f i r s t season and this would yield most of the probable gravelly material (211A and F). Some more
sand material should be extractable following thaw and drainage.
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3.2 SURFACE MATERIAL
The characteristics of a road surface mter ia l a re a well
graded gravel w i t h 15 t o 20% fines to act as a binder. T h i s
is contrary to the usual requirements for granular materials
which would tend to favour clean gravel. With reference to
the classification system (Table 2) , road surface material is actually a well graded Class 3 ox a dirty Class 2 material.
Source 168
There is a considerable quantity of good to excellent
gravel a t this source. The fines content is, however,
reported to be particulafly low (1 - 211 BBT, 1983). T h i s
material is therefore not suitable as surface material and could be conserved for more demanding requirements such as aggregate or structural fills not requiring t ra f f i c - ability. (Exploitation of t h i s scource this past winter will have revealed more specific information on t h i s
source and re-appraisal may be warranted.)
Source 155
There is a reasonable quantity of gravelly sands and sandy
gravels which contain the desired fines content i n the 155
north deposit. The s o u t h deposit tends to be cleaner and
coarser and, while it is excellent material, it is not suitable for surfacing.
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Ya-Ya Lakes
This source has been the prime source for quality gravel i n the region for many years. It is generally too clean for surface material and usually requires mixing wi th
finer soils. An objective of this study is to f i n d an alternate to this distant source.
4.0 RECOMMENDED GRANULAR SOURCES
Source 155 constitutes one of the best sources of granular
material to be investigated and proven i n recent years. While
the 860,000 m3 of f a i r to good granular material proven i n Source 155 could a l l be used to meet the Tuktoyaktuk
requirements, it may not be the best use of some of the
resources, X t is recommended that all of Source 155 North be developed for community use. Access to Source 155 North from Tyktoyaktuk would comprise about 40 km by ice-road and about 5 km over land. Source 1 5 5 South, which is generally superior-quality for embankment material, is not recommended
for development a t t h i s time.
The majority of 1 5 5 North (A and €3) is Class 3 material, t h e
remainder being Class 2 and 4 , Approximately 708, or 200,000 m3, of the Clags 3 material is congidered suitable for surface grade and about 30% is embankment material. I t is therefore recommended tha t a l l of Source 155 North be
developed and that the material best suited for surface grade
be selectively processed (screening and/or crushing) and stock-piled for that use. The majority of the remaining material could be used a6 pit-run for embankment material. The Class 4 material included i n Areas A and B should be
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suitable for embankment f i l l 8s sil t contents are Only
marginally greater than 20% and the materials will undoubtedly
become mixed with cleaner material.
Source 155 North, Areas A and B (see Figure 1 1 could provide up to the following amounts, based on Table 1.
Available
Surface Material LOO,OOO m3
Embankment Material 288,000 m3
Requ i r ed
~ O O , O O O m3
400,000 m3
Therefore, Source 155 North is unable to provide a l l Of the
embankment f i l l requirements.
The majority of Source 155 south is Class 2 material. There are local areas where the material drops to Class 3 or 4 due to poor gradation (lacking of sand sizes) or high fines
content. There is, however, insufficient concentration of the
Class 3 material to provide the remaining embankment material required. All of the Class 2 material in the 1 5 5 south
deposits is low i n finer ( 4 - 9%) and are not suitable for
surface grade. Locally Class 1 material exists and with some
limited screening/crushing and washing, concrete aggregate could be processed. I t is recommended that Source 1 5 5 South
should be reserved for structural f i l l s and possibly
aggregate,
If it is agreed to leave the Source 155 South material for
other use, then the remainder of the embankment material may
have to be obtained from Sources 211 or 177. On the other
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hand, future drilling i n the area of Source 155 W i l l
undoubtedly prove more embankment f i l l material i n which case
maybe a l l the requirements can be provided by 155.
The choice between Sources 211 and 177 would favour 177 for quality since there is generally more gravel. Most of 211 is very low i n gravel except for some fine gravel near the
surface, and localized patches of well graded sand and gravel.
With respect t o Phase f V of the Study, it is expected that a
development plan would be prepared for Source 155. However,
it will have to be confirmed to what extent 155 would be
designated for the community supply and what materials should
or should not be extracted for tha t purpose.
Respectfully submitted
HARDY BBT LIMITTD
A.J. Hanna, M,A.Sc., P.Eng.
N.G. Mosley, M.Sc. , P.Geo1.
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LIST OF EXISTING REPORTS
BBT Geotechnica l Consul tan ts (1983). Granular Matcrials Evaluat ion, Deposits 168 and 211, Tuktoyaktuk Area, N.W.T. Department of Ind ian Affairs and Northern Development.
EBA Engineering Consul tants Ltd. (1975) Ya-Ya Granular Resources Study. Arctic Petroleum Operators Assoc ia t ion (APOA) Calgary. 2 Volumes.
EBA Engineering Consul tants L td . (1983). Granular Resource Development and Management Plan, Tuktoyaktuk, N.W.T. Indian and Northern Affairs Canada.
EBA Engineering Consultans L td . (1986) . GKanUlar Resource Evaluat ion, Richard= Island, N.W.T. Indian and Northern A€ f a i r s Canada.
Hardy Associates (1978) Ltd . (1986) . Inter im Report - Phase 1, Community Granular Management Plan, Tuktoyaktuk, N.W.T., G.N.W.T. Department of P u b l i c Works and Highways.
Hardy BBT Limited (1986) . I n t e r i m Report - Phase 11, Fie ld Reconnaissance, Community Granular Management P lan , Tuktoyaktuk, N.W.T. G.N.W.T. Department of P u b l i c Works and Highways . Hardy BBT Limited (1987) . Inter im &port - Phase 11, Field I n v e s t i g a t i o n of Source 155, Community Granular Management Plan, Tuktoyaktuk, N.W.T. G.N.W.T. Department of Pub l i c Works and Highways.
Hardy BBT Limited (1987). Final Comparison of P o t e n t i a l Granular Sources, Community Granular Management Plan, Tuktoyaktuk, N.W.T. G.N.W.T. Department of P u b l i c Works and Highways.
P u b l i c Works Canada, Western Region (1981) . Geotechnical I n v e s t i g a t i o n , Mile 970 to Mile 1059 Mackenzie Highway (Combined Data 1976 - 19801, volumes I, 11 and I f f .
-Rampton, V.N. and H. Bouchard (1975). Surficial Geology of Tuktoyaktuk, District of Nackenzie Geological Survey of Canada, Paper 74 - 53.
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Hardy BET Limited CONSULTING ENGINEERING 8 PROFESSIONAL SERVICES
Ripley Rlohn and Leonoff I n t e r n a t i o n a l La. (1973) . Stage 11 Community Granular Materials Inventory - Tuktoyaktuk. Department of Indian Affairs and Northern Development,
Ripley, Klohn and Leonff International Ltd. (1973). Stage If Granular Materials Inventory: Zones I, If and 111 ( 3 volumes) . Department of Indian Affairs and Northern Development.
T e r r a i n Analysis and Mapping Se rv ices Ltd. (1976). Ya-Ya Lakes Esker Complex, S i t e Development and Restorat ion Plan. Department of Indian Affairs and Northern Development.
Thurber Consultants Ltd. (1979). Airphoto I n t e r p r e t a t i o n , Terrain Analysis, Tuktoyaktuk N.W.T. Government of t he Northwest Territories, Tom Planning and Lands Division.
Thurber Consul-nts L td . (1981). Tuktoyaktuk Water Reservoir , Geotechnical Report No. 1: Borrow Source and Site Inves t iga t ions . E.P.E.C. Consulting Western L td ,
DEPOSIT DESCRIPTION
Grnel and Pair t o good. S r l l erkcrr Low 304 a d (CUI Cencral f i l l
Well drained.
4 d ehiQ Sund k ) F a i r to good. C1aciofluvial L o d u d i l q , Uel l /mdera t t l
gravel bed6 i ce 20-30 m relief General f i l l outnrh pla in - 1881ve vcll drained.
L w , SOL Well lwderntel u r r i v e ice well drained.
30 t r e l i e f
Lmludium, Wodtratcly 6- n r r i v e wll drained. ice 21 I r e l i e f
9.d ( f ) Poor to A l l n r i a l Wium Uell drained. 214 milty (SP) f a i r .
&nerd f i l l on17
terr&ce MT r s a i v e 22 m r e l i e f ice
5.d m d Pair.
trace of silt
' 4 A gravel, Gcacral f i l l G l a c i o f E v i t l a 0 1 r a a 1 v e 6-30 I r e l i e f Ila. 011 lavlwdi?. &I1 drained.
armah plain ice
S i f t md d a y Poor. Il.rr m & d i m , W e r a t t l y !u with rand &nd h m i t r b l e G L c i o f l u v i r t a- r r a i v t vtll drained.
$ravel outrnh pla in ice 6-30 I relief
174 rmd Gravel und P a i r to @ Il.las op
Gencral f i l l G1.eioflnvi.l L w Wtll drained.
(cp 1 to q g q r t e rmtualh plain 25 B r e l i e f
- sand and Fair t o good. k a w l w t o
173 Well drained.
General f i l l 61aciofluvia1 high to aggregate rmtuaab plain
35,000 1.5 0.3 - 1.8 Undeveloped. Ro mjor C O ~ K C ~ T I ~ Poor Ilamitrble Winter road. 34 b
Proaptct
2.6 x IO6 3 .O 0 . 3 uodwelopcd. Ik r j o r c m e r n r Poor Favwrable Winter m d . 35 b
Prorpcet
1.5 lo6 6 -0 0 - 2.0 Ilndeveloped. Ib mjor concerns ?air F&rour.ble Winter 4. f roapect 36b
900,000 4.6 0.9 - 3.0 Ehtdeveloped. S i l t a t i w Winter rod. of laker 34 h
Fair to ?.*ourable Good Pro.pcct
3m.m 0.6 0 - 0.6 U n d a r c l o p t a . Siltation of Winter ice m a d , r i v n 9-r barge. 36km
1m,ow up eo 0 - 4.0 hdeveloped. A0 r j o r comcemr F a i r to cood Unsuitable 6 .O Winter rod. Prospect
40h
- Winter r a d . Iladweloped. S i l t a t i o n o€
43 b l h s
Fair 5nauitable Pco.pecct
3 x 106 2.0 0 - 1.2 Undeveloped. Ib r j o r c m c m Poor Farour.blc Winter road. Prospect 44h
500,000 up t o 0 - 0.6 Undeveloped. No mjor comcernr Poor to fair Favourable 9.0 Winter r o d . Prospect
45 lu
1 . 3
I
Sand and Fair . h r e 011 Signif icant - 4.5-6 .O Uruiweloped. S i l t a t i o n of Fair t b u i u b l . hdium, ?OL lbdera te ly !3 gravel C e r e d C l a c i o f l u v i t l u r s i v e ice well drained amunt t race silt f i l l o u ~ h p l r i n
Winter road. 45 tr 6-30 m r e l i e f
Laker Prospect
I Sand md
!U aravel Fa i r . I.=. m Hedim, 5.0 Undeveloped. S i l t a t i o n of Fair Uneuitable General f i l l C k c i o f l u v i a l SOT v s r i v e uell drained amunt
Ibde ra t c ly S ign i f i can t - t race milt mtw& p la in i ce 6-30 I r e l i e f I Winter rod.
45 b I r t e s P r o e p u t
Sad ( f ) Poor. AlEuvial/ Hediu Ycl l drained. 300,000 1.5 0-0.6 Undeveloped. Siltation of ?oor Unsuitable
leaera1 f i l l t e r r a c e 213 BOY e i l t k r g i ~ l C1aciofluvial 5 - 2 0 s
relic€ S-r barge. Winter ice r o d , Piver
47 tr
Prowact
Sand, porn. C l a c i o f l u v i a l % d i u wtll drained. - ( M I terrace m n s l v e ice
208 mcm! e i l t 5nmitrble /Alluvial to h 3 b .
S8ed ord Pair. 215 a m e l 6eaer.l f i l l , delta
Claciof lur i .1 Win. ullc Well drained. 23,000 1.2 2.0 UndcvClOpOd. S i l t a t i o n of Poor I h m i t a b l e 22 r e l i e f m so ive Winter i ce r o d , r i v e r Froepee t
ice pors ib le ."4&
-r barge. 50 h
S a d ( f d ? a i r PO Olaciof luvi t l L o v h t d i u m Moderately 1.5 I IO6 aulxuh
6 .O SOQC uell drainud.
0 - 2.0 Uadeveloped. Ib mjor concern Poor Favourable
gravel Ccparal r s r i v e 15-25 I relief. ice
175 and local a d . Hinter 4. Prorpu t SOh
f i l l
151 md ..nd &od. Qlrcral f i l l to -gate
Crave 1 Fair to C l a c i o f l u v i d & d i m Ut11 drained. 5 0 0 , 0 0 0 1.5 - 3.0 0 - 0.3 U-loped. S i l t a t i o n of Poor F#ourable
IGY) outumm Winter m a d ,
e-r barge. 50 h
?rorpect
~
Id P4 Sand m d God. General Eater-Kame Lw to Yell drained. 9.8 x lo6 5.0-15.0 0.6 P a r t i a f l y S i l t a t i o n of Good caod Lake. ravel f i l l t o c o q l e r Irdium. 7-40 1 developed. 1 &e a Proapect
uggngate P S W W BOae re1 icf mamaivc i ce
Winter i ce road. ?5 km
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TABLE A
Embankment Material - Total Requirements Approx. 400,000 m 3 over 20 years
Deposit Material Estimated Est imated Est imated Price Per m 3 Number Type Over bur den Recovery Total Avg. Tot 1 Haul
. ” - .- - -. - ”
Thickness Depth Volyme 50,000 m 9 (m) (m) (m 1 per season
($1 ( i n d i v i d u a l prices)
181 Sand, some 0-0 6 grave 1
183 Sand, some 0-0.6 g r a v e l
1 8 4 Sand, s o m e 0-0.6 gravel
177 Sand, s o m e 0-1.5 g r a v e l
155 Sand, some 0-0.6 g r a v e l
211 Sand, some 0-0 3 g r a v e l
1.0 187 8 000
1.0 71 8 000
1.0 200,000
4.6 2 x 106
1.0-2*0 1.1 x lo6
2.0 500 8 000 to
865,000
28. OOd/- (25/31/-1
28 OO/- (25/31/-1)
28.00/- (25/31/-)
30.50/36.33e (36/25/48)
31.50/35,00 ( 3 6/27/4 2 )
29.00/30.33 (29/29/33)
. . . . - . . .
NOTES : . . . ~
(a) Prices requested from three c o n t r a c t o r s : Stort and Sons, and North Star Trucking of Inuvik and E. Gruben’s Transport Ltd. of Tuktoyaktuk.
(b) One c o n t r a c t o r d e c l i n e d to provide prices for 181, 183 and 184.
( c ) The very large range of prices for a g iven deposit reduces t h e r e l i a b i l i t y for t he comparison, however, for each c o n t r a c t o r the r e l a t i v e Cost for the v a r i o u s deposits is i n d i c a t i v e .
(d) The average c o s t shown here and i n t h e t e x t is based on t h e two Cont rac to r s who provided prices fox all six deposits.
(e) The average cost shown here is for the three prices received and is considered a r e a s o n a b l e r e l a t i v e cost indicat ion between 177, 155, & 211.
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TABLE B
Surface Material - Total Requirements Approx. 100,000 m over 20 years 3
Deposit Number
Material Estimated Estimated Estimated Price Per m 3
Type Overburden Recovery Tobl Avg. Tot 1 Haul Thickness Depth 50,000 m Volgme 4
(m) (m) (m 1 per season ( $ 1
(individual prices)
168 Sand and 0-1.5 1.5 - 7.5 350,000 33 . OOd gravel to ( 3 5/27/3 7 )
SO0 IO00
155 Sand and 0-0 6 1 . 5 gravel
475,000 29 67 (30/27/32)
YaYa Sand and 0-0 6 5.0 -15.0 9.8 x lo6 32 00 Lakes gravel (33/38/25)
NOTES :
(a) Prices requested from three contractors: Storr and SonsI and North Star Trucking of I n u v i k and E. Gruben's Transport L td . of Tuktayaktuk,
(b) The very large range of prices for a given deposit reduces the rel iabi l i ty for the comparison, howeverl for each contractor the relative cost for the various deposits is indicative.
( c ) One pr ice given for Ya-Ya Lakes is quite inconsistent with the others rendering Table B less reliable.
(d) Average cost of the three prices received given here and i n the t e x t .
11/217
Hardy 66T Limited CONSULTING ENGINEERING & PROFESSIONAL SERVICES
CG14096
February 18, 1987
Government of the Northwest Territories Department of Public Works and Highways Yellowknife, N. W. T. X I A 2L9
Attention: Mr. Peter Morris, Head Camunity Programs
Dear Peter
R e : Summary of Tukkoyaktuk Meeting February 1 1, 1987
Attached is a sun'mary of the major points discussed and agreed
upon a t the recent meeting i n Tuktoyaktuk. If you do not concur with
this record of the meeting please provide your coments at your earliest
convenience.
Yours truly,
HAmY BBT LTD.
Per:
A. J. H m M , M. A. SC. , P. Eng. AH/rb 11/25 C.C. N. Mosley
R. h a s J. Carpenter E. D i l l o n R. Newmark V. Ruzicka V. Steen W. Younkin
21 9 - 18 STREET S.E., CALGARY, F \LBERTA T2E 6J5 TELEPHONE (403) 248-4331 TELEX 03-82671 7 FAX (403) 248-21 88
GEOTECHNICAL AND MATERIALS ENGINEERING - ENVIRONMENTAL, MATERIALS AND CHEMICAL SCIENCES BONNWILLE CALGARY EDMONTON FORT McMURRAY LETHBRIDGE LLOYDMINSTER MEDICINE HAT PEACE RIVER
PRINCE ALBERT RED DEER REGINA SASKATOON VANCOUVER
1.
0 Hardy BET Limited CONSULTING ENGINEERING 1 PROFESSIONAL SERVICES
S-RY OF mETING FEBRflARY 11, 1987
ILA OFFICE, TURIO-UK
The meeting was opened wi th et brief s m a r y of t h e results of
the study to date. A eeries of new potential granular
deposits, #18l, 103 and 184, have been identified along an arc
extending fran Source 161 towards Source 177, see Plate 1,
attached. The camplete list of depolsits still being
considered during Phase 11 of the study were: 162, 160, 161,
158, 181, 183 (1691, 184, 177, 168, 167, 155, 163, 211 and
YaYa Lakes. However, the sources that are being given prime consideration are: 181, 183, 184, 177, 168, 155, and 211.
The potential deposits 181, 183 and 184, range i n size from
very small t o moderate. I n presenting these deposits for
consideration, as potential alternates to Sources 177, and
211, two limitations are recognized:
a ) Small deposits could result i n greater terrain disturbance compared t o a preferred single large source.
b) The relatively greater costs of working small depasits may offset the shorter haul diertance.
The prime objeeive of the study is to determine a source for
granular material that a l l par t ies concerned can agree upon.
Therefore the meeting was called to obtain a concensus from
a l l par t ies prior to proceeding w i t h the next phase - drilling.
11/25
2.
3.
4.
5 .
Hardy 66T Limited CONSULTING ENGINEERING & PROFESSIONAL SERVICES
A review and slide presentation were given by Dr. Walt
Younkin, regarding the reclamation (revegetation) potential of
exposed granular surface. The success can depend largely on
same relatively simple, inexpensive techniques used dur ing
site restoration as well 46 using proven seed s p c i e s and
f erkil izer mixtures. The potential for sane themokarsting i n
a reclaimed borrow source is unavoidable. The grass cover
w i l l not prevent this8 however, the surface will appear less
scarred and will be more stable.
A survey of costs to haul gravel frm varioue sources d i d not
indicate a large econcmic benefit i n developing the closer deposits (181, 183 and 184). The prime reason given by the
contractors was the additional work involved i n developing
small deposits. Source 184 was considered more attractive
given that it was a larger source, however, the distance was
not much less than Source 177. The quality at Source 184 is
expected to be variable.
A portion of Source 155 is proposed as the prime potential
source for surface gravel. Sane good quality gxavel has already been pushed up on one terrace. T h i s could be an
econmic alternate to Ya Ya Lakes and #168. Source 155 i s the
only relatively unexplored gravel source i n the area.
There axe several ridges in the 155 area, and many of them are
expected to be mostly sand. It is proposed that sane of these
ridges could possibly provide the embankment material for
TuktoyaMuk, as an alternate to Sources 177 and 211.
6 .
7.
0 .
9.
Hardy BET Limited CONSULTING ENGINEERING & PROFESSIONAL SERVICES
Based on the forewing information and diecussion, the
follawing decisians were made with respect .to dr i l l i ng i n
March 1987 :
- There should be no investigation i n Sources 181 and 183.
- Since Source 184 is so remote cmpared t o the preferred source 155, it would be cost prohibitive to mobilize the drill there as well as t o 155.
- Source 155 should be drilled as a potential prime source for both surface gravel and embanlanent f i l l .
It was confirmed that permission would not be granted t o
extract any material fran Sources 166 and 161 during the
process of relamation of the presently dirsturbed areas.
A c t u a l reclamation of Sources 160 and 161 as well as any further developnent of "Source C" are considered outside of
the scope of t h i s study.
The drilling of Source 155 w i l l proceed in the l a t t e r part of
March and it is hoped that permission can be granted
expeditiously.
Prepared by:
A. If. Hanna, M.A. Sc., P. Eng.
Hardy BBT Limited
11 /25
