Botswana Ministry of Works and Comwunications

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FINAL REPORT

REPUBLIC OF BOTSWANA MINISTRY OF WORKS AND COMWUNICATIONS

BOTSWANA - ZAMBIA ROAD PROJECT AID LOAN NO. 69o-T001

NATA - KAZUNGU-A I(OAD "PANDAMATENGA ACCESS ROAD CHOBE RIVER BY - PASS ROAD JULY 1978

TA S TIPPET-m-S-ABBETT-MCCARFHY -STRATTON ENGINIEERSAND ARCHITECTS NEW YO:RK GABORONE FINAL REPORT

REPUBLIC OF BOTSWANA MINISTRY OF WORKS AND COMMUNICATIONS

BOTSWANA -ZAMBIA ROAD PROJECT AID LOAN NO. 690-H-001

NATA - KAZUNGULA ROAD PANDAMATENGA ACCESS ROAD CHOBE RIVER BY - PASS ROAD

JULY 1978

TAMS TIPPETTS-ABB ETT-McCARTHY-STRATTON ENGINEERS AND ARCHITECTS NEW YORK GABORONE TABLEOF CONTENTS PAGE I. INTRODUCTION I A. DESCRIPTION OF PROJECT 1 B. FUNDING 2 C. CONTRACTUAL ARRANGEMENTS 2 D. MODIFICATIONS OF CONTRACT 2

II. STAFFING 4

III. TRAINING 4

IV. CONSTRUCTION EQUIPMENT 4

V. MATERIALS UTILIZED 5 A. SOILS 5 B. WATER 5

VI. PROTECT HISTORY 5 A. GENERAL 5 B. SEQUENCE OF EVENTS 6 C. PROJECT SCHEDULING AND DELAYS 9 D. REMEDIAL ACTION 11 E. PICTORIAL HISTORY 11 VII. FINANCIAL SUMMARY 12

APPENDICES A. CONSTRUCTION EQUIPMENT B. SOILS AND MATERIALS C. WATER WELL LOCATIONS D. SYNOPSIS OF KEY CORRESPONDENCE E. PROJECT PHOTOGRAPHS

LIST OF FIGURES

FIG. 1 ...... LOCATION MAP

FIG. 2 ...... CONSTRUCTION PROGRESS CHART

FIG; B-i THRU B-4 ...... MATERIALS UTILIZATION DIAGRAMS FIG. B-5 THRU B-13 ...... AVERAGE GRADATION CURVES UNITED STATES GOVERNMENT INSTRUCTIONS

use routing symbols whenever possible. 2- a emo SENDER: Use brief, informal language. Conserve space. Subject Final Report Botswana -,Zambia Road Project Forward original and one copy. RECEIVER: Reply below the message, keep one copy, return one copy.

DATE OF MESSAGE Routing Symbol TO fiS/ENGR kl7 4 C&RSC. No. 8, Rm -507 SA-11I AID, Washington D.C. 20523a = TUeid

TITLE OF-ORIGINATO~R"-D0/

Chief Engineer, Hl)S0/ -FOLD- -FOLD-- INITIAL MESSAGE

Enclosed please find 8 copies of the Final Report on Botswana - Zambia Road Project.

REPLY MESSAGE

DATE OF REPLY Routing Symbol

10/18/78 DS/ENGR From fDanald W. Reilly SIGNATURE OF REPLIER USA=h to Kenya Stearns P.O. Box 30261, Palmer Nairobi, Kenya TITLE OF REPLIER Civil Engineer OPTIONAL FORM 27 5027-104 1. TO BE RETAINED BY ADDRESSEE JULY 1973 GSA FPMR (41 CFR) 101-11.6 3m' ZAMBIA

ANGOLA GULN I -. KASANEI

IGO.I THE PROJECT

APANIDAMATENGA

R ES8A

BOSA AZAMIATR

SERULI SELIBI "

B 0 T S A N A PO

AIG R 1ATINS LEPXEPE DRIFT

TSHANER EP. 0O F

MOLEPOLOLE

" W • PLOBATSE

: l--; AMATuLASA,. LEGEND

TSMABON PROJECT ROAD , • MAIN ROADS -MAIN FEEDER ROADS, SECONDARY ROADS

-= BOTSWANA -ZAMBIA ROAD --, LOCATION MAP

, FIGURE 1 I. INTRODUCTION This is the final report on the construction of the Botswana-Zambia Highway Project accomplished between April 25, 1976 and January 19, 1977. The report has been prepared in accordance with "Guidelines for Preparing Final Report" dated September 30, 1963, as issued by United States Agency for International Development.

A. DESCRIPTION OF PROJECT The Project consists of three sections of all-weather two-lane high way with a total length of 370 kilometers, including: 1) The Nata-Kazungula section, approximately 300 kilometers in length, beginning at Nata (See Figure 1) on the Francistown

Nata road and extending north west to the existing ferry cross ing to Zambia on the Zambezi River at Kazungula. 2) The Chobe River By-Pass section, approximately 65 kilometers in length, beginning near Kazungula at Kilometer 297.3 on the Nata-Kazungula highway and extending south west, skirting the town of Kasane, through the Chobe National Park to the bridge across the Chobe River at Ngoma. 3) The Pandamatena Access Road 5 kilometers in length, beginning at approximately Kilometer 198 on the Nata-Kazungula highway and extending east to the village of Pandamatenga on the' Botswana-Rhodesia border.

Construction work included clearing and grubbing of 1392 hectares, earthwork of approximately 1,120,000 cubic meters, 3,400 meters of culvert, 1538,800 cubic meters of base course and 457,200 cubic meters of surface course. The project design was performed under an agreement, dated June 15, 1971, for professional services between the Government of the Republic of Botswana and Tippetts-Abbett-McCarthy-Stratton of New York, U. S. A.

-1 B. FUNDING Funds for construction and construction supervision of the Project were provided by loan agreements between the Government of the Republic of Botswana and the United States of America acting through the Agency for International Development (AID). The funds allocated were in the amount of U.S. $16,600,000 and were derived from the following sources:

-U. S. $12,600,000 AID Loan No. 690-H-001 -U. S. $ 4,000,000 First Amendment No. 690-H-001A

C. CONTRACTUAL ARRANGEMENTS A contract for construction of the Botswana-Zambia Highway Project was signed on Tune 26, 1973 between the Government of the Republic of Botswana, and Grove International Corporation and Grove, Shepherd, Wilson and Kruge, Inc., a joint venture, for an estimated total cost of construction of U.S. $8,977,842.00 and Rand 3,160,825.00. The contract provided for completion of the project by April 25, 1976, a 975 day period from Notice to Proceed given on August 22, 1973.

There were two amendments to the contract, both dealing with the condi tions and limits for "Off-Shelf" purchases. A contract for supervision of construction was entered into by the Government of the Republic of Botswana and Tippetts -Abbett-McCarthy-Stratton (TAMS) in the form of a supplement to the basic agreement for design of the project. The supplemental agreement was dated July 2, 1973. Two amendments, the first dated September 29, 1976 and the second dated July 26, 1977, extended the the time for completion and modified the original estimate for cost of inspection services.

D. MODIFICATIONS OF CONTR4tCT During the course of construction twelve Change Orders, approved and signed by the Government, were issued. These orders are briefly described in Table 1. -2 TABLE 1 CHANGE ORDERS

Change Order Cost No. Purpose U.S.$ Rand/Pula

1. Hotel rentals for Engineer's staff while awaiting completion of housing units 8,421.38

2. Additional air-conditioning units for staff housing 3,768.98 53.07

3. Arrangements for monthly advance progress payments for permanent materials on site

4. Addition to the number of TAMS staff housing units 39,000.00 7,806.00

5. For escalation of P.O.L. costs between 11 November 1973 and 11 February 1974 5,756.01

6. For additional escalation of P.O.L. costs between 11 February 1974 and 14 May 1974 18,153.44

7. For additional escalation of P.O.L. costs between 14 May 1974 and 19 July 1974 772,775.17 LESS OVERPAYMENT (-)16,615.39

8. Interim allowance, by GOB authorization, to all employees to maximum rate of R5.00 per month between April 1973 and March 1974 2,978.02

9. Escalation of minimum wage rates for field personnel 160,225.56 LESS OVERPAYMENT (-)1,257.20

10. Reduction InRoad Reserve clearing on Costs included in Chobe By-Pass Road amounts in pay items 3/02, 3/03 and 3/04

11. For increase in mobilization costs to Costs included in cover importation of additional compaction amounts in equipment, pay item 1/01

12. For minor realignment of roadway at Costs included in Nata contract pay items TOTALS 42,768.98 958,296.06 -3 II. STAFFING Excluding the mobilization and demobilization periods, the major con struction efforts took place during the calendar years 1974, 1975 and 1976. A summary of the project staffing is presented in Table 2.

TABLE 2 Average/Maximum Staffing Levels Contractor's Staff Engineer's Staff Year/Source U.S. Botswana TCN Code 941 U.S. Botswana TCN 1974 17 232 2 22 4 11 9 1975 18 302 3 43 4 12 9 1976 15 290 3 40 4 13 7

Maximum 20 359 5 49 4 14 9

A paving specialist visited the Project in December, 1973 and une, 1974 in connection with proposals for upgrading the Project, and again in March 1975 in connection with selection of material for the surface course. A partner from the Consultant's home office made periodic visits to the Project sites.

III. TRAINING The Contractor trained Botswana Staff as drivers, equipment operators and oilers, surveyors, soils technicians, mechanics' helpers, stewards and maintenance workers. The Engineer trained Botswana Staff as soils technicians, surveyors, drivers, draftsmen and office clerical workers.

IV. CONSTRUCTION EQUIPMENT In compliance with a requirement of the Contract Documents, the Con tractor presented a schedule of major plant and equipment to be used on the Project. Some adjustments were made to the listing as the job progressed.

-4 Advances, for the purchase of new items (materials, construction plant, equipment, tools, spare parts, maintenance supplies and buildings, furniture and equipment for the Contractor's and Engineer's camps) totaling U. S. $1,244,437.00 and local currency Rand 225,000 were made available to the Contractor as provided for by the Contract Documents. Reimbursement of these advances were made in January,1974 in accordance with the Contract requirements. The major items of construction and shop equipment imported by the Contractor for use on the project are listed in Appendix A.

V. MATERIALS UTILIZED

A. SOILS The formation consists of two layers, the surface and base courses placed on a compacted subgrade or embankment. Base course materials were obtained from 123 borrow pits along the roadway. Surface course materials, which required processing, were obtained from 9 borrow areas. Appendix B contains the Material Utilization Diagrams which show the sources of these borrow materials and their utilization along the road. Also included in Appendix B are the Average Gradation Curves of the processed surface course materials.

B. WATER Water for construction was obtained from 24 water wells drilled by the Contractor. Appendix C contains information on locations, depth and yields of the wells.

VI. PROTECT HISTORY A. GENERAL The engineers, inspectors and materials technicians employed by TAMS systematically inspected construction operations and sampled and tested ma terials being incorporated in the work to ensure compliance with contract re quirements. Each month a determination was made of the work accomplished

-5 and eligible for payments, and pay quantities for the Contractor's monthly progress estimates were certified. The Engineer's survey parties verified reference points established by the Contractor's personnel for vertical and horizontal control points estab lished along the preliminary base line and verified limits of bush clearing flagged by the Contractor. After the final line was staked, detailed cross sections were taken for computation of pay quantities. Check measurements were made periodically to verify the construction performed by the Contractor. As sections of the Project were completed, final measurements were taken and as-built plans prepared. Periodic progress reports and charts were prepared for the Government and AID throughout the construction phase. After substantial completion of the works in January,1977 a final in spection of the project was made. On January 19, 1977, a Certificate of Completion was issued by the Engineer. As required by the Contract, the six-month maintenance period commenced. A synopsis of the more important correspondence initiated or received by the Consultant in connection with administration of the Contract is included in Appendix D.

B. SEQUENCE OF EVENTS During late July and early August,1973 the Contractor began to mobilize personnel at Pandamatenga preparatory to commencing construction of the main camp facilities. A sub-contract for construction of the engineer's facilities atd some items of the Contractor's camp was negotiated between Grove International and Botzam Services of Livingstone, Zambia. During September 1973 the sub contractor mobilized men, equipment and material at Pandamatenga and com menced construction on main camp housing units. On September 20, 1973, the Contractor, having been denied access through the Botswana-Rhodesia Border at Pandamatenga for mobilizing equipment, material and supplies, decided to shift the main camp site to the vicinity of Kazungula, The camp site was established at Kilometer 3+400 on the Chobe River By-Pass road approximately 8 Kilometers east of the village of Kasane. 3 -6 During late October, construction of housing, shops, offices, ware houses and ancillary facilities commenced at the relocated main camp site. The camp facilities were substantially completed by the end of March 1974. Temporary satellite camps were later established at Pandamatenga at Kilometer 105 and at Kilometer 63 on the Nata-Kazungula segment of the project. Mobilization of construction equipment, personnel, material and supplies began in early October 1973 and continued through April 1974. During the remainder of 1973 the construction efforts were concentrated on construction of the main camp site. A small amount of clearing, grubbing and earthwork was accomplished on the Chobe River By-Pass Road and on the northern end of the Nata-Kazungula road.

1. Principal Construction Accomplishments During 1974 Clearing and Grubbing - 536.6 hectares completed between Kilometer 297 and Kilometer 169 on the Nata-Kazungula segment of the project.

- Earthworks - excavation and borrow quantities came to a total of approximately 506,500m , with the major portion of this work performed between Kilometer 297 and Kilometer 196 on the Nata- Kazungula segment of the project.

- Pipe culverts - installed 59 pipes ranging in size from 18" to 60" diameter for a total of 1129 lineal'meters between Kilometer 297 and Kilometer 196 on the Nata-Kazungula segment and from Kilometer 0+000 to Kilometer 3+500 on the Pandamatenga Access Road. Base Course - approximately 113,600m placed between Kilometer 297 and Kilometer 197 on the Nata-Kazungula segment and from Kilometer 0+000 to Kilometer 2+350 on the Pandamatenga Access Road. Surface Course - approximately 19,000m was placed between Kilometer 292 and Kilometer 273+500 on the Nata-Kazungula segment.

5-7 I 2. Principal Construction Accomplishments During 1975

- Clearing and Grubbing - 634 hectares completed between Kilometer 169 and Kilometer 2+000 on the Nata-Kazungula segment, between Kilometer 0+000 and Kilometer 14+000 on the Chobe River By-Pass segment and from Kilometer 2+350 to Kilometer 5+275 on the Pandamatenga Access Road.

- Earthworks - excavation and borrow quantities came to a total of 379,145m 3 with the major share of this work performed between Kilometer 196 and Kilometer 49+000 on the Nata- Kazungula segment and on the Pandamatenga Access Road.

- Pipe Culverts - 69 pipes were installed, ranging in size from 18" to 60" in diameter, for a total of 1,308 lineal meters between Kilometer 200 and Kilometer 65 on the Nata-Kazungula segment and from Kilometer 0+000 to Kilometer 5+200 on the Pandamatenga Access Road. Base Course - approximately 219,000m was placed between Kilometer 197 and Kilometer 57 on the Nata-Kazungula segment and on the entire 5.2 kilometers of the Pandamatenga Access Road. Surface Course - approximately 177, 000m of surface material placed between Kilometer 273 and Kilometer 130 on the Nata- Kazungula segment.

3. Principal Construction Accomplishments During 1976

- Clearing and Grubbing - completed 218.8 hectares between Kilometer 2+000 and Kildmeter 0+000 and between Kilometer 297+300 and Kilometer299+600 on the Nata-Kazungula segment and between Kilometer 14+000 and Kilometer 65+000 on the Chobe River By-Pass segment, which completed this item of work.

- Earthworks - excavation and borrow quantities came to a total of 235,092m , which completed this item of work.

-8 Pipe Culverts - 36 pipes were installed ranging in size from 18" to 48" diameter, for a total of 973 lineal meters. The major share of this work was performed on the Chobe River By-Pass segment. Base Course- 206,120m3 was placed on the Nata-Kazungula road between Kilometer 57+600 and Kilometer 0+000 and between Kilometer 297+300 and Kilometer 299+588 and on the Chobe River By-Pass road between Kilometer 0+000 and Kilometer 65+048. Surface Course - 260,878m placed between Kilometer 130+000 and Kilometer 0+000 on the Nata-Kazungula road and between Kilometer 0+000 and Kilometer 65+048 on the Chobe River By-Pass Road.

4. Principal Construction Accomplishments During 1977 The Contractor continued to work on final clean-up and corrective work in accordance with the punch list provided by the Engineer. On January 19, 1977 the Completion Certificate was issued with a list of outstanding deficiencies attached. These were rectified by the Contractor during the early part of the six-rnnth maintenance period. The Contractor, in compliance with the Engineer's instructions, installed 10 additional 18" diameter CMP culverts on the Nata-Kazungula road between Kilometer 236 and Kilometer 238. Two additional pipes were installed at Kilometer 6+540 on the Chobe River By-Pass Road. Rock was placed on sand fill slopes and at culvert inlets and outlets to guard against erosion on numerous sections of the Nata-Kazungula Road and Chobe River By-Pass Road. The Contractor maintained the project until July 19, 1977 when a Certificate of Maintenance was issued.

C. PROTECT SCHDULING AND DELAYS On October 5, 1973, as required by Clause 12, Part II-Conditions of Particular Application of the Conditions of Contract - the Contractor submitted his proposed construction schedule for the project. The schedule was returned to the Contractor on October 16, 1973 for modifications. It was resubmitted and finally approved on March 19, 1974.

-9 In October 1974, the Contractor presented a revised construction schedule. It was not approved by the Engineer, who informed the Contractor that the actual rate of progress was far below that projected by the schedule and re quested an explanation as to what steps were contemplated to bring progress on the project up to schedule. On November 6, 1974, the Contractor again presented a revised con struction schedule reflecting a completion date beyond the contract period for completing the Project. The Contractor made reference to conditions which had allegedly caused delays to progress on the Project and stated that claims would be presented requesting time extension for completion of the Project. The revised schedule was not approved pending presentation by the Contractor of all supporting details. By the end of December 1974 the Contractor had completed 29 percent of the work then specified in the Contract, as modified by ten change orders. This compared with 55 percent scheduled to be completed according to the approved progress schedule. On February 27, 1975 the Engineer notified the Contractor that progress was continuing to fall further behind the approved construction schedule and requested the Contractor to submit, in writing, his plans for bringing progress up to schedule in compliance with pertinent provisions of the Contract. On Tuly 24, 1975, the Contractor again presented a revised construction schedule reflect ing a completion date of August 31, 1976. This schedule was accepted by the Engineer in September, 1975 with the provision that acceptance of the schedule should in no way be construed as an approval for extension of time for completion of the project. By the end of 1975 the Contractor had completed 63 percent of the work specified in the contract as compared with 73 percent projected in the revised construction schedule. On March 11 ; 1976 the Contractor presented the 6th revision of the construction schedule reflecting a completion date of December 31, 1976. This schedule is included herein as Figure 2. 'The schedule was accepted by the Engineer on March 24, 1976 with the provision that acceptance of this schedule should in no manner be construed as an approval of extension of time for completing the project. -0 LEGEND CONSTRUCTION PROGRESS CHART ...... BOTSWANA-ZAMBIA HIGHWAY

WORK ELEMENT < I

MOBILIZATION 7 T',' z <> 7''><74>« 7

GENERAL .. , > > < <+ $' <2740>77

SURVEYS , AND SITE CLEARING 7+47 PREPARESU.GRADE < > I

EARTHWORKS ~k>1' E ~>07 '>,0>0 ~«< >>~*<7«> 77>

BASE COURSE / 7<>«D4 > P SURFACE COURSE ~<* +4 # 7iA <>7 77 ><4< DRAINAGE I-

___MAINTENANCEI I _ _ _ _ FACILITIES - ' -> 7 7 7 7,<7 * <>tVViV7?7W7v'V~7~"

HIGHWAY HARDWARE <

CHANGE ORDERS AND I DAY WORKS ''< TOTAL , ,, , , VII. FINANCIAL SUMMARY As indicated in Section I-B of this report, the funds available (from AID) for the construction of this project were in the amount of U. S. $16,600,000. The disbursements of monies for the construction and construction supervision through May 31, 1978, are summarized in Table 3, along with the original es timated amounts for comparison.

TABLE 3 Disbursements Through Original Estimated May 31, 1978 Amounts U.S. $ Rand/Pula U.S. $ Rand/Pula Construction Costs (Grove International See Table 5) 8,823,174.86 3,109,708.81 8,977,842.00* 3,160,825.00* Change Orders (From Table 1) 42,768.98 - 958,296.06 Supervision of Construction (TAMS) 1,297,962.99 - 1,354,681.00* - TOTALS 10,163,906.83 4,068,004.87 10,332,523.00 3,160.825.00 *From original contracts and supplements through May 31, 1978

Table 4 presents a summary of final construction costs, including those by Contract Pay Items, disbursed to the Contractor (Grove International). The above listed costs do not include back charges on the loan, which charges are not available to the Engineer. The Contractor has submitted a series of claims requesting extensions of time and reimbursement for claimed additional costs. These claims are currently under review by the Engineer. A supplemental report will be issued by the Engineer after the Contractor's claims have been resolved and will include any additional costs and time extensions awarded to the Contractor. Assuming an average rate of exchange of 1.000 Pula or 1.000 Rand equal to 1.350 U. S. Dollars, and neglecting bank charges, the approximate loan balance as of May 31, 1978, was U. S. $940,000.

-12 An average conversion rate of exchange has been used to estimate the loan balance since the actual rate varied and actual draw-down figures are not available to the Engineer. At the time of Project commencement, the currency of Botswana was the Rand. In August 1976, the Botswana Government changed over from the Rand to the Pula as the official currency. During the course of construction, local currency disbursements have been made to the Contractor in both Rand and Pula.

-13 --- =1m =- M Il-- M=M m -

of 4 TABLE 4 - SCHEDULE OF FINAL CONTRACT QUANTITIES Sheet 1

Item Unit of Total Revised Contract Unit Price Final Revised Contract Amount US $ Rand/Pula No. Description Measure Final Quantities US $ Rand/Pula

1/01 Mobilization Lump Sum 100.00% 570,772.00 583,606.00 -0 2/01 Engineer's Staff Housing 2-Bedroom House Each 1 33.33% 13,000,00 2,721.00 13,000.00 2,721.00 2/02 Engineer's Staff Housing 3-Bedroom House Each 3 100.00% 14,000.00 3,393.00 42,000.00 10,179.00 2/03 Engineer's Staff Housing Technicians House Each 4 100.00% 6,500.00 1,301.00 26,000.00 5,204.00 2/04 Engineer's Staff Housing Jr. Staff Housing Each 16 100.00% 1,125.00 196.00 18,000.00 3,136.00 2/05 Moving & Re-erection of Engineer's Staff Housing Each move NOT APPLICABLE 2/06 Engineer's Main Office Lump Sum 100.00% 18,000.00 3,063.00 2/07 Engineer's Main Laboratory Lump Sum 100.00% 26,000.00 4,077.00 2/08 Moving & Re-erection of Engineer's Main Office Each Move NOT A P L I CA B L E and Main Laboratory 2/09 Engineer's Forward Office/Laboratory Each 2 100.00% 7,663.00 15,326.00 -0 2/10 Additional Surveying, Office, Laboratory and Prime Cost 69.809 15,000.00 10,471.46 -0- Communication Equipment 2/11 Contractor's Expenses and Profit on Percent 69.809 25% 2,617.87 -0- Prime Cost Item 2/10 2/12 Provide and Maintain Vehicles for ihe Engineer's Staff V/month 304 V/month 240.00 171.00 72,960.00 51,984.00 3/01 Basic Survey and Setting Out km 370.590 km 485.00 134.00 179,736.00 49,659.05 3/02 Clear "Heavy Bush" Hectare 514.075 ha 232.00 75.00 119.265.40 38,555.63 3/03 Cleat "Light Bush" Hectare 700.53 ha 155.00 50.00 108,582.15 35,026.50 3/04 Clear "Grassy" Hectare 177.5 ha 124.00 40.00 22,010.00 7,100.00 2 2 4/01 Prepare Sand Subgrade for Embankment m 3,335,443 m 0.11 0.06 366,898.73 200,126.58 2 2 4/02 Prepare Clay Subgrade for Embankment m 408,450 m 0.23 0.11 93,943.50 44,929.50 3 3 5/01 Construct Standard Embankment i 865,895 m 1.17 0.47 1,013,097.15 406,970.65 3 3 5/02 Construct Special Embankment m 254,779 m 1.96 0.74 499,366.84 188,536.46 3 3 5/03 Excavate Unsuitable Material m 4,315 m 0.89 0.30 3,840.35 1,294.50 3 3 6/01 Base Course m 538,854 m 3.10 1.20 1,670,447.40 646,624.80 3 3 6/02 Overhaul of Base Course Material m /km 46,462 m /kr 0.28 0.10 13,009.36 4,646.20 3 3 7/01 Remove Overburden from Surface Course Borrow Pits m 260,056 m 0.60 0.16 156,033.60 41,608.96 3 3 7/02 Surface Course m 457,260 m 5.45 2.10 2,492,067.00 960,246.00 3 3 7/03 Haul of Surface Course Material m /kmn 6,572,330 m /kr 0.102 0.034 670,377.66 223,459.22 TABLE 4 (Continued) Sheet 2 of 4

Item Unit of Total Revised Contract Unit Price Final Revised Contract Amount No. Description Measure Final Quantities US $ Rand/Pula US $ Rand/Pula

3 8/01 Excavation and Backfill for Cuiverts up to m3 5,585.12 m 4.80 3.30 26,808.58 18,430.90 48 inches in diameter 8/02 Excavations for foundations of Culverts 48 inches m3 949.46 m3 2.70 1.40 2,563.52 1,329.23 and over 3 8/03 Backfilling culverts 48 inches and over m3 3,220.10 m 4.90 3.60 15,778.49 11,592.36 8/04 Nestable Galvanized Corrugated Metal Pipe 18 inches in diameter 14 USSG PIPE LM 2,499.63 LM 43.80 8.20 109,483.79 20,496.97 END SECTIONS Each 388 each 66.60 2.25 25,840.80 873.00 8/05 Nestable Galvanized Corrugated Metal Pipe 24 inches in diameter 14 USSG PIPE LM 281.04 LM 55.60 11.00 15,625.82 3,091.44 Supply additional 24 inch diam. Pipe* 1,140.35 END SECTIONS Each .34 each 102.00 8.00 3,458.00 272.00 Supply additional End Sections* 306.00 8/06 Nestable Galvanized Corrugated Metal Pipe 36 inches in diameter 12 USSG PIPE LM 195.06 LM 105.00 16.00 20,481.30 3,120.96 END SECTIONS Each 28 each 276.00 21.00 7,728.00 588.00 8/07 Nestable Galvanized Corrugated Metal Pipe 48 inches in diameter 12 USSG PIPE LM 115.22 each 135.00 22.00 15,554.70 2,534.84 Supply additional 48 inch diam. Pipe* 104.80 END SECTIONS Each 10 each 762.00 43.00 7,620.00 430.00 8/08 Nestable Galvanized Corrugated Metal Pipe 60 inches in diameter 10 USSG PIPE LM 487.68 LM 204.00 27.00 99,486.72 13,167.36 Supply additional 60 inch diam. Pipe* 475.10

8/09 Excavate inlet and outlet drains, mitre 3 ditches and roadway ditches m3 4,777.81 m 1.10 0.30 5,255.59 1,433.34 8/10 Sand-cement Pitching m3 276.769 m3 23.00 30.00 6,365.69 8,303.07 8/11 Clay slope Protection m2 N/A 1.00 -0- -0

*Supplied but not installed mi -blN mN -m~ m ml m min nmlW arm~ nn- a a a a1 al a

TABLE 4 (Continued) Sheet 3 of 4

Item Unit of Total Revised Contract Unit Price Final Revised Contract Amount No. Description Measure Final Quantities US $ Rand/Pula US $ Rand/Pula

8/12 Supply Nestable Galvanized Corrugated Metal Pipe 18 inches in diameter 14 USSG PIPE LM 238. LM 34.00 8,092.00 -0 END SECTIONS Each 0 each 67.00 -0- -0 9/01 Construct Maintenance Facility Complex Lump Sum 98% 130,148.00 73,087.00 9/02 Water Pump PC Sum 9,000.00 -0- 2,552.23 9/03 Contractors Expenses and Profit on Prime Cost Item 9/02 25% -0- 638.06 10/01 Road Signs Each 284 each 85.20 10.00 24,196.80 2,840.00 10/02 Guide Posts Each 900 each 14.50 -0- 13,050.00 10/03 Kilometre Posts Each 182 each 15.00 -0- 2,730.00 Dayworks As directed 100% 59,994.21 -0 TOTAL-SCHEDULE OF QUANTITIES 8,823,174.86 3,109,708.81 a CO I TAMS Staff Hotel Accommodation 100% 8,421.38 0) CO 2 Air Conditioners TCN Houses 100% As Billed 3,768.98 53.07 CO 3 N/A (Progress Payment Permanent Material) N/A CO 4 Additional TCN Housing Each 6 6,500.00 1,301.00 39,000.00 7,806.00 SUB-TOTAL 42,768.98 16,280.45 CO 5 P;O.L. Escalation Cost 100% As Shown 5,756.01 CO 6 P.O.L. Escalation Cost 100% As Shown 18,153.44 CO 7 P.O.L. Escalation Cost 100% As Shown 772,775.17 SUB-TOTAL 796,684.62 LESS: OVERPAYMENT 16,615.39 TOTAL P.O.L. ESCALATION COST 780,069.23 CO 8 Interim Allowance (Wage) 100% As Shown 2,978.02 CO 9 Wage Escalation Cost 100% As Shown '160,225.56 SUB-TOTAL 163,203.58 LESS: OVERPAYMENT 1,257.20 TOTAL WAGE ESCALATION COST 161,946.38 TABLE 4 (Continued) Sheet 4 of 4

Item Unit of Total Revised Contract Unit Price Final Revised Contract Amount No. Description Measure Final Quantities US $ Rand/Pula US $ Rand/Pula

CO 10 Road Reserve cleared way, Chobe River By-pass (included under items 3/02, 3/03, and 3/04) 100%

CO 11 Importation Additional Sheeps foot roller (included under item 1/01) 100%

CO 12 Minor realignment of roadway 100% at Nata

TOTAL CONSTRUCTION COST 8,865,943.84 4,068,004.87

i I I I I I I I I I APPENDIX A CONSTRUCTION EQUIPMENT I I I I U I I I I I EQUIPMENT IMPORTED BY CONTRACTOR FOR BOTSWANA-ZAMBIA ROAD PROTECT

I Descqription 2 Chevrolet Impala Sedan 5 jeep-Wagoner 7 jeep-Wagoner 1 Chevrolet Vega 23 Chevrolet Pickup 19 Mack Tractor (T675-8W) 2 Chevrolet Flat Bed 5 Mack-Platform Stake (T426-3500) 1 Mack-2000 Gal. Fuel (T426-3500) 4 Mack Dump Truck 10 c.y. 2 Chevrolet Dump Truck 5 c.y. 1 Mack-Birmingham Tandum Lowboy Trailer 2 Mack-Gindy 25 Ton Tandum Semi Trailer 8 Heil- P3S, 30.3 c.y. Dump Trailer I 7 Fruehauf-TEO-F3-R 10,000 Gal. Tanker 5 Fruehauf-TEO-F2-R 6,500 Gal .Tanker 5 Fruehauf-Tandum Axle Dolly 2 Barko 14,000 Telescopic Crane 6 Cobey 1062 Wagon Trailer 1 Cedarapids 443 Commander Crusher 1 Peerless Portable Base Stabilisation Plant 2 Atlantic International Water Treatment Plant 6 Caterpillar 631-B Tractor S631-B Scraper 7 Caterpillar D8-H Dozer 2 Caterpillar D9- Dozer 4 Caterpillar D6-C Dozer

2 Caterpillar 12-F Grader 1 5 Caterpillar 14-E Grader U A-i I

EQUIPMENT IMPORTED BY CONTRACTOR FOR BOTSWANA-ZAMBIA ROAD PROTECT (Cont.)

Quantity Description 4 Caterpillar 966 Loader 1 Trojan 4000 Loader 4 Raygo 400A Compactor Vibrator 11Raygo 410A Compactor Vibrator 1 Vibro Plus Vibrating Sheepsfoot Roller S1 Bros 10,000 Compactor 2 Bros 6,000 Compactor ICaterpillar-200KW Generator 3 Caterpillar - 125KW Generator

1 Little Reddevil Generator 1 Kholer 3KW Generator 1 Kholer 2KW Generator 1 Detroit Diesel Generator (2D-32) 1 Kholer Generator (5CKM61) 3 Hobart GR-3 03 Welders /w trolley 2 Worthington 365 Compressor 2 Worthington 160 Compressor

2 Kellypower Tamper I John Deere / 2700 Disc Harrow/10' Cut 1 ohn Deere / 1630 Disc Harrow/ 7' Cut 2 Worthington WS-55 Rock Drill 2 Alemite Portable Service Station I Graco Lube Ranger 2 Worthington Wagon Drill 1 8 Layne Bowler Deep Well Pump 1 Layne Bowler Pump only j 8 4" Centrifugal Pump 4 2" Centrifugal Pump 1 9 Columbian Steel Water Tanks 20,000 U.S. Gal. 1 A-2 EQUIPMENT IMPORTED BY CONTRACTOR FOR BOTSWANA-ZAMBIA ROAD PROTECT (cont'd) Quanti Description 1I Caterpillar Parallel Shank Ripper 2 Fleco Blade Rake 4 Chainsaw 3 Gardner-Denver Compressor 5 Aerotron Radio Transmitters @ $1203 7 Aerotron Radio Receivers @$2 10 16 SSB Radio Transceivers @ $1340 8 Auxilliary Radio Transceivers @ $1340 2 Cevy 4 x 4 Pickup Truck 8 Chevy 2 x 4 Pickup Truck

1 L B Smith Cone Crusher 2 Ford 4 x 4 (1164-14C Tractor) 2 Bros Sheepsfoot Roller 1 Hyster Towed Vibratory Compactor

During 1975 and 1976 the Contractor added the following listed equipment: 1 Caterpillar No. 14 Motor Grader 1 Caterpillar No. 966 Loader 1 Trojan No. 4000 Loader 1 Cone Crushing Plant 3 ft. Standard Fine Bowl with 4 Deck Screens 4 Conveyor Units

A-3 I 1 I I I' U I I APPENDIX B I I SOILS AND MATERIALS I I 1 I I I I I .1 APPENDIX B SOILS AND MATERIALS (a) General The road pavement is composed basically of two layers, the surface course and base course, overlaying a compacted subgrade or embankment. The sources and volumes of the surface course and base course materials are indicated in the Materials Utilization Diagrams included as Figures B-i through B-4. (b) Subgrade The subgrade soil consists primarily of aeolian fine sand except for approximately 36 kilometers of the road for which the subgrade is a pan material consisting of clay. In the pan areas, special 1. Om thick embankments were constructed with plasticity and fineness control of material. The subgrade and embankment soils were compacted to a minimum of 90% of modified AASHTO compaction. The measured mean relative compaction obtained immediately after compaction of the subgrade was 93.5% of the modified AASHTO maximum density. (c) Base Course The majority of the base course materials are derived from aeolian deposits i.e. fine sand with a trace to some silty clay. The remaining base bourse, approximately 15% of the total, was obtained from pits having a large component of gravel. The 15cm thick base course is bank run or blended material for which the amounts of fines and plasticity were controlled. The base course materials were obtained from 123 base borrow pits and compacted to a minimum 95% of modified AASHTO density. The measured mean relative compaction directly after construction was 96% of the modified AASHTO maximum density. (d) Surface Course The 15cm thick surface course is well graded, sandy gravel with some silty clay fraction. The materials for the road segment from Kilometer 0+000 to Kilometer 173+000 are derived from calcrete deposits while the materials for the remaining portion are derived from weathered

3-1 bedrock. The surface course has controlled gradation, plasticity and durability to obtain sufficient strength, to reduce ravelling to a minimum, particularly during the dry season, and to resist the wear of traffic. Surface course materials have been obtained by screening, crushing and blending materials from 9 borrow areas and were compacted to a minimum of 98% of modified AASUTO maximum dry density. The com posite properties for each borrow pit are indicated in the Average Gradation Ourvesincluded as Figures B-5 through B-13. Directly after construction of the surface course, the measured mean relative compaction was 100% of the modified AASHTO maximum density.

B-2 N A TA K A ZUN GU LA RO0A D 70 033 90 CC 30 00 00 0 L K 0 0+I 03-

0 I I

L M 3 100 0002 [2 _

MATERIALS UTILIZATION DIAGRAM Fiure -I NATA - KAZUNGULA ROAD .

+--- 121 .

y T

MATERIALS UTILIZATION DIAGRAM Fgure R-Z NAT A - KAZ UN GULA ROAD

K,300 220 220 232 252 07 2 230

I 3 3 2

MATERIALS UTILIZATION DIAGRAM Figure 2-3 LT-m it

CHOBE RIVER BY-PASS ROAD 02__ Q___ 0 60 40 - 0 50 0 i

-F-CEL -Tl J-II II :

MATERIALS UTILIZATION DIAGRAM Figure B-4 3: SIEVE ANALYSIS "SMI~ia VIII

I;Y UN In.~ V.I. STAISRS SIEVE NUMBfh SUE9 - usuLguNuus I1 .O-- 'ao IiUl- 11I a to to 0 i oIIIa lf I II

SN Cu: ye B" I N. . o

I i B _ ___~ N II 1 l s - Curi e At"-

I I 2 a 6 4 2 i5 4 3 2 a -

GRAIN I IZE MILTERS

SILT AND CLAY SOILS GRAVEL SAND

NUMBE1R I SAMPLE DEPTH ELEV. L.L. P.1. KIEECIT@ IPTIONI

A Composit 38 19 Crusher Average Run of 192 samples

B Composit 33 17 Surface Average Course Blend as placed of 236 samples

MDD 1960 kg/m Los Angeles Abrasion = 42% Average Blend Added = 15% REPUBLIC OF BOTSWANA TI PPETTS-ASSETT-NcCAIThY-STRATTOU MINISTRY OF WORKS AND COMMUNICATIONS ENGINEERS NEW YORK, N.Y. BOTSWANA-ZAMBIA GRAIN SIZE DISTRIBUTION BY: DmArTE: /Q/76 HIGHWAY j PIT 2A DOi: FIGURE B-5 SIEVE NALYSIS .N...I E' ANLYSIS

SSIEVEOPEING - In j.S PhIMS-SEVE iNRh3EN son - MILLIMETER

V116 ± 6 i S 0-4 0 1*0 miU.S) 3*0**55 3 001mesa a

9 I I I - -

Crye B"

%S •

20 1 1TCriie A"- INN N

° I FIK I46 591 2 a045 4 2 1115 ,#5 2 6

GRIISZ IN MILLIMETERS

COACE iE NtIUM FI SILT AD CLAY SOILS GRAVEL SAND

.5",r I.BSAMPLE DEPTH ELEV. L.L.P.1.

A Composite 28 10 Crusher Run Average of 229 samples

B Composite 28 11 Surface Course Blend as Placed Average of 58 samples

3 2050 kg/m Averaoe Blend Added

REPUBLIC OF BOTSWANA TIPPETTS-ASETT-NCCARTIY-STATTON N.Y. MINISTRY OF WORKS AND COMMUNICATIONS ENGINEERS NEW YORK, ATE / BOTSWANA-ZAMBIA BRAIN SIZE DISTRIBUTION BY: NCZ jA :9 8/76 HIGHWAY PIT 14 & 14A OWN. FIGURE B-6 S ANALYSIS .01 ANALYSIS

SIEVE- - IN. i.., - n -IIII- SIZ-MII

It a s* 1

Ue a -,- e B

I - 1 -I-[_I - I I' 6l51 10I 8 $514 1 IOis 05 21 GANSZ8 NILMTR OA RE Filo 9OA-1i 1DI UM F log S ILT AND CLAY SO ILS GRAVEL nSAND

E--l I UNEASMPLEDEPlTH ELEV. L.L. P.1. KWKIPTION

A Composite 36 19 Crusher Run Average of 116 Samples

B Composite 36 15 Surface Course Blend Average of 138 samples H GHWA E SA 18 SILT ANDURCLA-SIL

kg/m 3 Los Angeles Abrasion 28% Av agau Pnd AAd = 907 REPUBLIC OF BOTSWANA ITI UETT$-ABBTT-N¢¢ARTNY-STRATTON

MINISTRY OF WORKS & COM24UNICATIONSIT NINEERS1 NEW YORK, N.Y.

I MGIELI7 : IIGIWAE I I 1 8A SIEVE ANALYSIS nimsA NALYuSiS I IlEVI @O[I:I -.IU. |U.S. IITMOARSl SIEVE NUMBR UN ILIEU ,V 1 .Oe .001l.

- \\-\,r--I-I -- I S E- IN.- S 4

, II'KIti ..zz7llflz $zI... 2 I low560 * 20.

IGRAIN SIZE IN MILLIMETERS

COANSE FINE tOASEi MEDIUM I SILT AND CLAY SOILS

GRAVEL SAND

SAMP DEPTH ELEV. L. P.1. 0NBERIIPTI

A Composit 26 12 Crusher Run Basaltic Aggregate Average of 91 samples

B Composit( 28 13 Surface Course Blend as Placed Average of 85 samples

3 Average MDD = 2200 kg/m Los Angeles Abrasion 38% Average OMC 8.5% Aver P'lend AIA.A REPUBLIC OF BOTSWANA TI EfTTS-AIETT-NCARTY-STRATTOi ITTqTP'I ¥ O WOVQ A n rn WTraTTn~lz ENGINEERS NEW YOlK, N.Y.

BOTSWANA-ZAMBIA BRAIN SIZE DISTRIBUTION 1Y: HBC SATE:22/9/7f HIGHWAY PIT 21A ur: FIGURE B8 D" IUR - IB II "SIEVE ANAL.YIIS . . 1411Mll I LYIl

[urn $1,1min - I. I. ITUSE IVV I - m&INimums1 :!-l0 n .001

,a*1 i 4 is s :0 aL w I 2 0665S a a 4 i 0i

- 7sl , 96---

I RI IE IN M IEER

C*fliEI FIN g 'o "au FIN 40 SIT .M.... SIL 6 5C o432 14593 ry B"

ver 7 samples

NUMBE NERPI Ay I GRAIN SIZE IN MILLIMETR:

5OSOAE MINE COASE MIltS FINE SILT A CLAy GSOILS GRAVEL ISAND A , Q%. . A- Aii dd d?~::A:

IMUBEIRIIIIPIi

A Composit, 24 10 Crusher Run Basaltic Aggregate 3 Average of 101 sables

B Composit, 26 13 Surface Course Blend as Placed U Average of 79 samples

3 AveageMDD223 kgm Los Angeles Abrasion = 36% 3 3Average OMD = 2235 kg/rn ledAded = REPUBLIC OF BOTSWANA TIlll ETTS-ASSETT-NCCARThlY-STATTOU 3MINISTRY OF WORKS AND COMMUNICATIONS ENlIEEE, NEW Y.ik, N.Y. GRAIN SIZE DISTEIIIUTION I: HEC IMnT:22q 3BOTSWANA-ZA~MxIA HI GHWAY PIT 23 eFIGURE B-9 , SIEVE ANALYSIS IMmv na awLYoia

SIVMII-I. .. SANDARD SIEVE NUMBERS SIZE - NIULIET I- .01 .001

* ' 'e--"-__

-NIP_ Ir1 \ \\ ]

*OA E 7tN _OAlEED t FN

5$0 9 2 86543 2 1 65 5 2 I SIZE IN MILLIMETERS I ' I GRAIN

1 1,11I COARSE MEDIUM FSILT AND CLAY SOILS

GRAVEL SAND NU BE I I

SAMPLE4 DEP EEY . . .1 SCBI1PTIORI

A Composite 38 17 Crusher Run Basaltic Aggregate Average of 176 samples

B Composite 26 13 Surface Course Blend -s Placed Average of 58 samples

Average MDD = 2135 kg/m Los Angeles Abrasion = 38% Average OMC = 9.0% Average Blend Added = 19% REPUBLIC OF BOTSWANA TI PPETTS-ABETT-cCAUTNY-TRATTON MINISTRY OF WORMS & COMMUJNICATIONS ENINEERS NEW YORK, N.Y.

WAY BRAIN SIZE DISTRIBUTIONI BY: HBC JATE: 22/9/71 BOTSWANA-ZAMBIA HIGHWAY PIT 25A 3 Iue: FIGURE B-10 SIEVE ANIALYSIS lNVINI1111 ANALYSIS I ;I EV OPE IN - INI.8 TOSIIEENN1-MLII

I - - , i ii .0,,

I GRI SIZEto N :: OILS 1

IS G VELIZE I I ANDLI

IOC I FIRE_ _ COASE EDIU FIK SLT AD CAY OIL -APL ESN

NUSMBE DEPTH ELEY. L.L. P.I DESCRIPTION

A Composite 26 13 Crusher Run Basaltic Aggregate 3 Average of 83 samples

B Composite 26 13 Surface Course Blend as Placed * Average of 58 samples

Average MUD = 2300 kg/rn7 Los Angeles Abrasion = 34%

Averaae OMtC = 8.6% Average Blend Added = 21% REPUBLIC OF BOTSWANA T1 PP ETTS- AESETT-NcCARTht- STRATTON MINISTRY OF WORKS AND COMMUNICATIONS ENGINEERS NEW YORK, N.Y.

BOTSWANA-ZAM3IA BRAIN SIZE DISTRIBUTION I y: HBC JDATE: 22 /9/7 HI"HWAY IPIT 27 1 FIGURE -11 SIEVE ANALYSIS W1.1 ANKEm SIS

SIEVE O ENINI - IN. . . STANDARI SIEVE NUMBERI Sit- NILLIfIhhS .01 .001

so°,o

I ___

"i i'

U Ae

6 55#9 2 a65 3 2 1 .65#32 S

GRAIN SIZE INMILLIMETERS II

=COARSIE FIRE COARSE MODILEM FINE SITADCAIOL

GRAVEL SN

I SAMPE DEPTH ELEV. L.L. P.)S DESCRIPTION

A omposite 28 10 Crusher Run SAverage of 72 samples

B -,ompositv 31 13 Surface Course Blend as Placed I Average of 62 samples

Average MD 40 kg/ Los Angeles Abrasion 25%

Average Blend Added =20% REPUBLIC 0OF BOTSWANA TI PPEflS-ABETT-cCARTNt'-STRATTOU UINISTRY OF WORKS & COMMUNIGTIONS ENGINEERS NEW YORK, N.Y. BOTSWANA-ZAMBIA BRAIN SIZE DISTRIBUTION By: CKA DA: 2 5 HIGHWAY -F PIT 29 Do: FIGURE B-12 SIEVE ANALYSIS HWYNHOETR ANLYSIS SIEVE OMEINGHQ. IN.I _U.S. STANDARS SIEVE NUMBERS SIZE - MILLINTM

-F-I .0 .001-1 Uxiii i iw 60 Ioo 2ot ) 061 51 2 3665 93

I _

I1li

Ia _: 'Cu ve" N IC A11

IQI II 1 IG S I IIMETE

I FINE ICAE C E DUM FINE ISILT AND CLAY SOILS GRAVEL SAND

; NIUM4BERSAMPLE DEPTH ELEV. LL. P.I. DESCRIPTION

A Composite 34 15 Crusher Run Average of 74 samples

B Composite 29 12 Surface Course Blend as Placed Average of 42 samples

3 MDD 2140 kg/m Los Angeles Abrasion = 27% Average Blend Added = 15%

REPUBLIC OF BOTSWANA TI PPETTS-AlETT-NCA TRY-STRATTON MINISTRY OF WORKS ANDATTON ENGINEER$ NEW YORK, N.Y. BOTSWANA-ZAM1 IA R1AIN 31ZE D13TIRIBUTIO1N sy: cKA T E-2 5 / 1 / 7 7

HIGHWAY PIT 32A Mwe: FIGURE B-13 I I I I I I I I APPENDIX C

I WATER WELL LOCATIONS I I I I I I I I I APPENDIX C WATER WELL LOCATIONS WELL NO. 3 Location: Km 171 Lt. of centerline 200 meters Drill - 6" x 392' Ream - 8" x 92' Case - 6" x 84' Test - 24 Hours - 276 Pump 6000 G. P. H. Total depth - 392' Pumped at 150' 24 Hr. Drawdown - 3' Water Good

WELL NO. 4 Location: Km 175 - Lt. of centerline 100 meters Drill - 6" x 380' Ream - 8" x 82' Case - 7" x 82' Test - 276 Pump 1800 G. P. H. Total depth - 380' Pumped at 200' Drawdown 24 Hr. - 100 Water Good

WELL NO, 5 (Gov't No. 2436 Location: Km 178 - Lt. of centerline 115 meters Test -276

Pump - 1400 G. P. H. Total depth - 160' Pumped at 140' 24 Hr. Drawdown - 60' Water Good C-1 WELL NO. 6 Location: Km 183 - Lt. of centerline 60 meters Drill - 6" x 436' Ream - 8" x 86' Case - 7" x 86' Test - 276 Pump - 500 G. P. H. Total depth - 436' Pumped at 250' 24 Hr. Drawdown - 150' Water Good

WELL NO. 7 - (Gov't. No. 2435) Location: Km 189 - Rt. of centerline 100 meters Clean & Test Pump - 6000 G. P. H. Pumped at 140' 24 Hr. Drawdown - 10' Water Good

WELL NO. 14 Location: Km 252 - Lt. of centerline 100 meters Drill - 6" x 250' Ream - 8" x 53' Case - 6" x 53' Test - 276 Pump - 6000 G. P. H. Total depth - 250' Pumped at 150' 24 Hr. Drawdown - 6' Water Good

C-2 WELL AT KM 256 MAINTENANCE FACILITY NO. 3 Location: Km 256 - Lt. of centerline 200 meters Depth - 100 feet Water Rest Level - 42 feet Depth Pump Set - 70 feet 24 Hr. Test - 1800 G. P. H.

WELL NO. 15 Location: Km 245 - Rt. of centerline 40 meters Drill - 6" x 260' Ream - 8" x 54' Case - 54' Test -276

Pump - 1500 G. P. H. Total depth - 260' Pumped at 200' 24 Hr. Drawdown - 140' Water Good

WELL NO, 16 Location: Km 236' -Rt. of centerline 30 meters Drill - 6" x 250' Ream - 8" x 22' Case - 6" x 22'

Test - 276 Pump -6000 G. P. H. Total depth - 288' Pumped at 150' 24 Hr. Drawdown - 10' Water Good

C-3 WELL NO. 17 Location: Km 224 - Rt. of centerline 30 meters Drill - 10" x 89'

Case - 8" x 85' Drill- 8" x 43' Drill - 6" x 38' Case -6" x 132'

Test - 276 Pump -2000 G. P. H. Total Depth - 170' Pumped at 100' 24 Hr. Drawdown - 11' Water Good

WELL NO, 18 Location: Km 217 - Lt. of centerline 200 meters Drill -i0" x 70'

Case - 7" x 70'

Drill - 7" x 52' Drill - 6" x 88' Case - 6" x 122' Test - 276 Pump 2400 G. P. H. Total depth - 210' Pumped at 200' 24 Hr. Drawdown - 140' Water Good

C-4 WELL NO. 19 Location: Km 213 - Lt. of centerline 100 meters Drill - 10" x 44'

Case - 8" x 40'

Drill - 8" x 76' Drill 6" x 130' Case - 6" x 120' Test - 276 Pump - 6000 G. P. H. Total depth - 210' Pumped at 60' 24 Hr. Drawdown - 10' Water Good

WELL NO. 20 Location: Km 143 - Rt. of centerline 100 meters Drill - 10" x 240'

Case - 7" x 220' Drill -6" x 378'

Case - 6" x 240'

Case - 5" x 240'

Test - 276 Pump -1500 G. P. H. Total depth - 618' Pumped at 460' 24 Hr. Drawdown - 105' Water slightly salty to taste but drinkable

C-5 WELL NO, 23 Location: Km 139 - Lt. of centerline 100 meters Drill - 12" x 290' Place & Extract Case - 10" x 290' Drill - 8" x 30' Drill - 6" x 40' Case - 8" x 290' Case - 6" x 320' Test - 276 Pump - 1200 G. P. H. Total depth - 360' Pumped at 330'

24 Hr. Drawdown - 120' Water salty

WELL NO, 24 Location: Km 135 - Lt. of centerline 500 meters Drill - 12" x 270' Drill - 10" x 10'

Case - 10" x 270' Drill -8" x 30'

Case - 8" x 290' Case -6" x 310'

Case - 5" x 320' Test -276 Pump -4000 +G. P. H. Total depth - 320' Pumped at 270'

24 Hr. Drawdown - 2' Water Salty

C-6 I

WELL KM 205 MAINTENANCE FACILITY NO, 2 Location: Km 105 - Lt. of centerline 40 meters Depth - 302 feet ~ Water Rest Level - 82 feet Depth Pump Set - 150 feet 5 48 Hr. Test - 3000 + G. P. H.

WELL NO. 26 Location: Km 82 - Lt. of centerline 100 meters Drill - 12" x 145'

5 -Case -8" x145' Drill - 8" x 23' I Drill - 7" x 10' Case - 7" x 168'

I Case - 6" x178' Test - 276

Pump - 1200 G. P. H. Total depth - 306' I Pumped at 140' 24 Hr. Drawdown - 35' I Water Good C

I 0-7 WELL NO, 27 Location: Km 77 - Lt. of centerline 100 meters Drill - 12" x 174' Install & Extract Case - 10" x 174' Case - 8" x 174' Drill - 9" x 68' Drill - 8" x 64' Case - 7" x 242' Case - 6" x 306' Test - 276 Pump - 4000 + G. P. H. Total Depth - 306' Pumpe at 240' 24 Hr. Drawdown - 0 Water Good

WELL NO. 28- (Gov't. No. 2465) Location: Km 63 - Rt. of centerline 100 meters Clean & Extract Case - 300 Ream - 10" x 98' Ream - 8"x 27' Ream - 6" x 12' Case - 8" x 98' Case - 6" x 125' Test - 276 Pump - 1000 + G. P. H. Total depth - 137' Pumped at 130' 24 Hr. Drawdown - 33' Water Good

C-8 WELL NO. 30 Location: Km 47 - Rt. of centerline 400 meters Drill - 12" x 132' Case - 10" x 89' Install & Extract Case - 12" x 43' Drill - 10" x 117' Case - 7" x 242' Drill - 6" x 183'

Install & Extract Case - 6" x 408' Test - 276 Pump - 1000 G. P. H. Total depth - 408' Pumped at 160' 24 Hr. Drawdown - 77' Water Salty

WELL NO 31 Location: Km 44 - Lt. of centerline 200 meters Drill - 12" x 110' Case - 10" x 100' Drill - 10" x 142' Case 8" x 142' Drill - 8" x 250' Case 7" x 392' Drill - 6" x 78'

Test - 276'

Pump - 3000 G. P. H. Total depth - 502' Pumped at 160' 24 Hr. Drawdown - 44' Water Salty

C-9 WELL NO, 32 Location: Km 42 - Lt. of centerline 100 meters Drill - 12" x 108' Case - 10" x 108' Drill - 10" x 212' Drill - 8" x 120' Case - 6" x 340' Case - 8" x 182' Test - 276 Pump - 3000 + G. P. H. Total depth - 448' Pumped at 160' 24 Hr. Drawdown - 20' Water Salty

WELL NO. 34 Location: Km 35 - Lt. of centerline 200 meters Drill - 12" x 230' Install & Extract Case - 10" x 230'

Drill - 8" x 30' Case -6" x 260'

Drill - 6" x 160 Case -5" x 324'

Case - 8" x 20'

Test - 276 Pump -1000 + G. P. H. Total depth - 420' Pumped at 150' 24 Hr. Drawdown - 100' Water Salty

C-10 WELL NO, 36 Location: Km 7 N. E. along old track from Km 63 Drill - 12" x 180'

Case - 10" x 180'

Drill - 10" x 231'

Case - 8" x 211' Drill- 8" x 254'

Case - 6" x 245' Test -276 Pump -4000 + G. P. H. Total depth - 265' Pumped at 180' 24 Hr. Drawdown - 0 Water Good

C-11 'I 3 I 1 I I I I B j APPENDDC D SYNOPSIS 0? KEY CORRESPONDENCE 3 DURING CONSTRUCTION I £ I I I 1 I I On September 1, 1973, the Contractor confirmed the estimated amounts payable to Sub-Contractors for well drilling and construction of the Engineers facilities and requested formal approval of the proposed sub-contracts.

On September 11, 1973, the Engineer advised the Contractor that the sub-contractcrs for well drilling and construction of base camp facilities were approved for work on the project.

On September 12, 1973, the Engineer advised the Contractor that it new appears certain penxission to use the Matetsi-Pandamatenga Road as a supply route during construction of the project cannot be obtained and that access through Rhodesia for contractors vehicles and sipplies will be restricted to the Kazungula and Plumtree Border Posts. The Contractor in light of this development was requested to advise in writing whether any changes in his construction program and progress schedule were contemplated.

On September 14, 1973, the Contractor replied that denial of permission to use the Matetsi siding and closure of the Border at Pandamatenga has and will cause undue hardship on the Contractor and was a complete surprise to the Contractor. He further advised that he was not expecting, at this time, to make any major changes in the construction program. However, time had nor allowed a proper investigation and no definite answer could be given. He further advised that if any major changes were forced to be made the Engineer would be advised as soon as 'chtnges were known or brought about by circtstances tnforeeable at this tine.

On September 20, 1973, the Contractor advised the Engineer that circunstances beyond his control had forced his moving the main can. from Pandamatenga to Kasane. Further that this move would cause major changes in the progress schedule and the changes would be submitted when time pernitted study and preparation.

On October 3, 1973, the Contractor advised the Engineer that closure of the Border at Pandamatenga would cause added cost and delay to the Project and the Contractor intended to claim for the added cost and a time extension. On October 3, 1973, the Contractor advised the Engineer that deterioration to the access road between Nata and Kasane would cause added cost and delay to the Project and his intent to claim added cost and time extension. On October 5, 1973, the Contractor submitted his construction schedule to the Engineer for approval. On October 15, 1973, the Engineer returned the construction progress schedule for correction. On October 17, 1973, the Engineer advised the Contractor respecting his intent to claim for additional cost and rime extension due to deterioration of access roads that in the Engineers opinion there were no valid grounds for a claim.

D-I On October 23, 1973, the Engineer transmitted revised copies of the Borrow Pit Location plan and materials utilization diagram to the Contractor.

On February 19, 1974, the Engineer advised the Contractor of unsatisfactory work in constructing standard enbanknent on the project. On April 23, 1974, the Engineer notified the Contractor of a change in the location of surface course pit No. 25. On April 25, 1974, the Engineer forwarded a copy of a letter from REDSO Nairobi concerning "Off Shelf" procurement of caterpillar spare parts and requested that the Contractor comply with the contents of the REDSO letter. On May 14, 1974, the Contractor submitted a request to increase the $50,000 limitation on "Off Shelf" purchases specified under clause 43, 4(b) of the Conditions of Particular Application of the Contract Docunents; On May 16, 1974, the Engineer advised the Contractor that the Go enmrent of Botswana had authorized the upgrading of the project and requested the earliest possible date principals of Grove New York could constructionmreet in Kasane, contract. to finalise details covering changes involved to the present

On May 25, 1974, the Contractor advised that in view of scheduled negotiations for upgrading the project he would defer the placing of surface course material until the result of negotiations for upgrading the project were finalised. On July 12, 1974, the Contractor advised the Engineer that in view of the delay in approval to conmrnce upgrading the project the Contractor had terminated all negotiations with various suppliers and potential sub contractors. The project planning would no longer consider the possibility of upgrading.

On July 15, 1974, the Engineer advised the Contractor that he agreed with the Contractor's plan to disregard upgrading in future planning on the project. The Engineer further stated that the Contractor should now concentrate on regaining the lost tine, since actual progress is 13% as opposed to 32% projected on the approved construction progress schedule. On August 7, 1974, the Engineer forwarded a copy of the USAID Auditors Report to the Contractor with a request that an early reply be given in order that he could respond to the Auditors request. On Augu t 9, 1974, the Engineer advised the Contractor of the Engineer's concern over the poor rate of progress to date on the project and directed his attention to the fact that only 18% of the work had been completed as opposed to 37% lapse of the Contract period. The Contractor was requested to advise the Engineer what steps were being taken to overcome this situation which nay delay completion beyond the Contract period.

D-2 On August 13, 1974, the Contractor replied to the Engineers letter of August 7, 1974, stating the medical supplies were on the project at the time of the Auditors Report. On August 15, 1974, the Contractor requested approval to rent a crushing plant from the A.E. Denovan Company of Zambia, for use in producing surface course material. On August 19, 1974, the Contractor submitted an updated construction progress schedule for approval.

On August 30, 1974, the Engineer transmitted to the Contractor additional guide lines for use in reporting "Off Shelf' purchases. On August 30, 1974, the Engineer advised the Contractor of additional details required before escalation cost to P.0.L. Products could be reinbursed to the Contractor.

On October 3, 1974, the Engineer transmitted plan and profile sheets for the Pandamatenga access road to the Contractor.

On October 25, 19 74. the Engineer advised the Contractor that the results of extensive test rolling on the sand/clay base course material had determined that the sheepsfoot roller had given reliable compaction and requested the contractor acquire additional units in order to obtain the progress required on the project.

On October 26, 1974, the Contractor advised the Engineer of his intent to claim a time extension and additional costs due to his inability to achieve the required density with the equipment specified for the sand/clay base course.

On October 31, 1974, the Engineer advised the Contractor thar his request for approval to rent crushing equipment from Dnovan of Zanbia was rejected because Denovan was considered from an ineligible source (935) country. On October 31, 1974, the Contractor advised the Engineer that he would expect a change order be issued covering the cost of sheepsfo-t rolling equipment for use in compacting sand/clay base course. On October 31, 1974, the Engineer advised the Contractor that AID had approved an increase to $250,000 limit on "Off Shelf' purchases. The Contractor was also given new reporting procedures to be followed in all "Off Shelf' transactions.

On October 14, 1974, the Engineer rejected a revised version of the Contractors progress schedule and requested the Contractor to prepare a revised realistic workable schedule reflecting his experience to date on the project. The Engineer requested to be informed in accordance with clause 46, part one, of Conditions of Contract, what steps were being vaken in order to accelerate progress and complete the project on schedule. On November 6, 1974, the Contractor presented a revised version of the progress schedule stating that full consideration had been given to delays and experienced gained to date on the project. He stated the Contractor ray have been over optimistic when preparing the previcus schedule. The revised schedule provided for a completion date 6f 31 August, 1976 or 129 days beyond the Contract period. The Contractor also listed additional construction equipment provided in an attempt to accelerate the progress.

D-3 On November 12, 1974, the Engineer rejected the latest revised progress and again requested the Contractor to present any claims with support details to Justify the time, extension for completion of the project in accordance with clause 44 of Conditions of Contract.

On November 20, 1974, the Contractor wrote the Engineer concerning the claim for escalation cost involved in the rise to mininan wage rates in Botswana.

On January 13, 1975, the Engineer advised the Contractor of the reasons for several grade changes made to date on the project. In most cases (rock excavation) the changes were made at the Contractors request and were to the advantage of the Cotractor. On Pebruary 27, 1975, the Engineer made reference to previous correspondence concerning poor construction progress and advised the Contractor that progress continues to fall further behind that of the approved schedule each month. The Contractor's attention was directed to clause 14 (2) Conditions of Particular Application and he was again requested to submit in writing his plan for accelerating the work. The Engineer again urged the contractor to submit claims under which he felt entitled to extension of time along with full and detailed particulars bf the claim in accordance with clause 44, extension of time for completion. On March 31, 1975, the Contractor answered TAMS letter dated 27 February, 1975, concerning progress on the project. T-he Ccr.racaor outlined his program for improving progress particularly in the surface course operations.

On May 2, 1975, the Contractor clarified some poi:nts raised by USAID Auditors re.pecting "Off Shelf' purchases.

On June 9, 1975, the Contractor was instructed to install additional CMP culverts at locations designated where drainage proble,-s had occurred during the past rainy season.

On June 12, 1975, the Contractor advised of difficulties experienced in securing Resident Permits for expatriate employees.

On August 5, 1975, the Engineer returned a revised construction progress to the Contractor for minor corrections. On September 1, 1975, the Contractor was given the colour schee for all roadway signs to be installed on the project. On September 25, 1975, the Contractor wrote to the Engineer about the source and origin of the two Ford county tractors imported to the job site for use in compacting the sand/clay base course. On October 6, 1975, the Engineer advised the Contractor that all details of the Ford County farm tracto-s had been sent to the Chief Roads Engineer for a ruling from REDSO on eligibility of this equipment for use on the project.

On October 6, 1975, the Engineer wrote the Contractor concerning the revised construction progress schedule submitted for approval on 24 September, 1975 and resubmitted on 8 September with changes. The Engineer informed the Contractor the schedule was accepted with the provision that acceptance should in no manner be construed as an approved time extension. Further, the Engineer advised the Contractor that the question of approval of a time extension could only be resolved after the Contractor presented his claim with detailed particulars to support the claim. The Engineer requested the Contractor to submit his claim with supporting details in accordance with the provisions of the Contract. D-4 October 6, 1975, the Engineer transmitted three detailed copies of the construction progress chart compiled from the latest revised construction progress schedule presented on the 8 September, 1975. The Contractor's attention was directed to the fact actual progress had already fallen 5% behind the new schedule during the first two months the schedule was in effect. The Engineer requested the Contractor to present in writing his plan for improving progress in order to complete the work within the time shown on the latest revised schedule. Clause 14, Conditions of Particular Application from the Contract Documents was quoted to the Contractor as the basis for this request.

On October 8, 1975, the Engineer requested details on the water wells onthe project drilled and cased by the Contractor which the Government of Botswana is interested in purchasing from the Contractor.

On November 14, 1975, the Contractor submitted his claims CS-1 through CS-10 requesting time extensions amotnting to 284 days and additional cost in the annunt of $2,153,616.20.

On November 21, 1975, the Contractor wrote to the Engineer concerning reimbursement of Custons and Excise duties being imposed on P.O.L. Products for use on the project.

On Iember 19, 1975, the Engineer advised the Contractor that to date well in excess of 100 kilometers of roadway had been substantially completed. However, the drainage ditches had not beer, ful-y completed in accordance with plans and would not function as intended. Therefore any "damages likely to accUr during this rainy season would be repaired at the Contractors expense. On December 22, 1975, the Engineer notified the Contractor that the kilometer posts delivered for inspection did not conform to the post design and a list of deficiencies were noted. On January 21, 1978, the Contractor notified the Engineer of his intent to claim a time extension and additional cost due to private traffic use of the newly completed sections of the project. On January 27, 1976, the Engineer advised the Contractor that it was the contractor's responsibility to post signs, barricades and watchmen to keep the public traffic off the new roadway therefore, in the engineers opinion no valid grounds exist to support a claim.

On February 5, 1976, the Contractor reauested that approximately 120 kilometers of roadway be accepted for public traffic. On February 9, 1976, the Engineer informed the Contractor that he had no objection in principal to the request for acceptance of 120 kilometers of roadway, however, the road had not been satisfactorily completed. A list of deficiencies existing in this section was given the Contractor. On March 11, 1978, the Contractor submitted the sixth revised construction progress schedule projecting a completion date on December 31, 1976.

D-5 On March 24, 1976, the Engineer informed the Contractor that the 6th revised schedule was accepted with the provision clearly understood that acceptance of the schedule should in no manner be construed as an approved extension of time.

On April 5, 1976, the Contractor formally requested an increase to the limitation of $250,000 on purchase of "Off Shelf' spares.

On April 5, 1976, the Contractor notified the Engineer that he was unsuccessful in locating a sub-contractor to augment the crushing operation for surface material. On April 12, 1976, a detailed punch list of deficiencies was transmitted to the Contractor covering the section of the road from km 167 to km 290+500. On June 25, 1976, the Contractor advised the Engineer of his intent to claim added cost and delay in connection with delay in reimbursement of duties paid on P.O.L. products by the Contractor.

On July 28, 1976 ,the Engineer instructed the contractor concerning slope protection to be provided in certain areas along the new road between Nata and Kazngula.

On August 3, 1976, the Contractor requested clarification on local currency portion of his monthly progress payments after the Botswana Pula officially replaces South African Rand as legal tender in Botswana. On'August 18, 1976, the Engineer advised the Contractor that his request for a waiver on source and origin for the two Ford tractors had been refused by USAID therefore no reinbursement from AID Loan Finds could be effected. On October 15, 1976, the Contractor was given a list of special ditches to be constructed on the Chobe By-Pass road.

On November 15, 1976, the Contractor was given a list of additional culverts to be installed on the Chobe River By-pass road.

Of November 25, 1976, the Engineer requested additional information concerning the Contractor's claims CS-I through CS-10. On January 15, 1977, the Contractor confirmed the list of dificiencies to be corrected before a certificate of acceptance for the road would be issued.

On January 19, 1977, a Certificate of CompletionL was issued to the Contractor and the six months maintenance period connenced. On February 25, 1977, the Contractor submitted claims CS-7 supplement throug'. CS-10 supplerent inclusive and CS-I1 requesting extension of time (26 + days) and reimbursement of additional cost in the amount of $2,173,840.91.

On February 25, 1977, the Contractor submitted claims CS-7 supplement through CS-10 supplement inclusive and CS-i1 requesting additional extension of time and reimbursement of additional cost in the amount of $2,173,840.91.

Note: As evaluation of the Contractor's claims continues, there has been considerable correspondence between the Contractor and the Engineer. Upon resolution of the claims a supplemental report will be issued. D-6 I I I U U U U U U U E. PROJECT PHOTOGRAPHS I U I I I I U U I I Crushing Plants Surface Course Pit 2A

Pug Mill Blending Surface Course Pit 25A II

Surface Course Pit 25A

UURYPTOERTOSE Pug Mil Blending Road Reserve Bush Clearing Km 242

Embankment Construction Km 287

Road Construction Water Supply Km 189

ROADWAY UNDER CONSTRUTION E-2 Stockpiling Material Base Course

Special Embankment Construction Km 232

Watering of Embankment Km 257

ROADWAY UNDER CONSTRUCTION E-3 Culvert Assembly

Twin Culvert with Sand-Cement Pitching

Multiple Culverts with Sand-Cement Pitching

CULVERT INSTALLATIONS E- 4 AT Km 25

AT Km 194

Emergency Landing Strip Kra 260.5

FINISHED ROADWAY E- 5 AT Km 286

AT Chobe By-Pass Junction Km 297

I Chobe By-Pass Road Near Ngoma Bridge

FINISHED ROADWAY E-6