GOVERNMENT OF ETHIOPIA MINISTRY OF WATER RESOURCES REPLIES TO THE REVIEW OF FINAL REPORT AMIBARA DRAINAGE PROJECT (PHASE - II) WATER AND POWER CONSULTANCY SERVICES (INDIA) LIMITED (International Consultants in Water Resources) KAILASH, 26 KASTURBA GANDHI MARG NEW DELHI - 110001 , INDIA WAPCOS APRIL , 1997GOVERNMENT OF ETHIOPIA MINISTRY OF WATER RESOURCES REPLIES TO THE REVIEW OF FINAL REPORT AMIBARA DRAINAGE PROJECT (PHASE - II) WATER AND POWER CONSULTANCY SERVICES (INDIA) LIMITED (International Consultants in Water Resources) KAILASH. 26 KASTUR0A GANDHI MARG NEW DELHI - 110C01 , INDIA WAPCOS APRIL . 1997AMI BARA DRAINAGE PROJECT II DESIGN STUDY REPLIES TO THE REVIEW OE REPORT VOLUME I SUMMARY 1* «« Page 3 Paragraph 4 The reasons for groundwater fall is not given or for how long or io what depth The chance of the felling trend to reverse is not indicated - The possible reasons of ground waler fall is discussed in section 8 5 1 Annex 12 The present paragraph under comment is only a factual description of the observed dal a on groundwater le% cis The imperative need to increase the waler applicalion and consequent reversal of falling trend to rising trend have been covered in section 5 1.4 of the Project Preparation Report 2* Paragraph 4 Change in irrigation practice should be viewed in light of the yield levels • ■ Attempts to correlate yield with irrigation application made in the past indicated no clear relationship as yield depends on various other factors 1' Paragraph XVI has the 2nd crop option been considered in view of technical possibilities, or maintenance of the system > •T On consideration of both 4* Page 10 Why should the consultants be all from overseas * * 4 ■ The details may be seen in section 6.2 of the Project Preparation Report ft is never intended that the consultants be all from overseas The recommended number of staff appears to be high paragraph J - We consider the strength recommended as justified Comment by ihe client ReplyWhy should the Stale Farm not be made responsible for sub surface drain maintenance ’ Studies made in the past as discussed in Section .3 I Appendix I of Annex 11 have recommended that the maintenance of all laterals and collector drains should be the responsibility of PCC as the maintenance of these pipes is a specialised operation with specific plant and this would be most effectively controlled centrally, rather than individually within the various entities This practice of PCC being entrusted is being followed at present and the consultant found no reason to depart from it 5* Section 6 Second sentence The sentence is not dear, editing problem - The capital T beginning on the 2nd line should be small t‘ 6* Figure 3 The construction schedule for buildings is late Better be shirted forward or awarded as a separate contract The buildings are for the O&M staff and hence its late Commencement is justified This has also helped in Keeping the annual investment costs more balanced as can be seen from table I 7 * Table 1 Edit Col 2 should read 1497 - *• This need change to 1997 Have the following costs included ’’ over head cost Supervision cost Vehicles - Yes. as indicated in section >1 3 and 5 .1 of Annex 10 VOL! PROJECT PREPARATION REPORT «• Page 3 l ast Paragraph Zones (iii) and (v) are areas where large scheme of agnculture being operated ~ 2•* The zone (Mil have been Stated to have significant agricultural and Economic imports as given in this pars Hence the information that large schemes of agriculture is being operated in this zone as given in the commcni is in line with ihe view expressed So tar as zone (v) i-< Concerned, il is given out in several standard publications [hat in this zone due in severe climatic condition there is nominal agricultural activities it is no! understood how it has been commented that in this Afro-Alpine zone large schemes of agriculture is being operated 9* 23 1 Information is oui of date Now [here is no Ministry of State Farms The Middle Awash Agricultural Development Enterprise is now managed by a board which is accountable to the Prime Minister’s Office ** Suitable amendment to reflect the stated position is indicated 10* 2 3 J The reduction in size of MAADE should be indicated - The land use in the study area in indicated in para 5 0 Annex 12 and Table 6 B therein Further, it should be staled that Table 2 4 does not include investment cost and the annual operation cost expended by the PCC The table 2 4 is the 'summary of annual Budget of MAAE" and hence the cost indicated in the comment are not incorporated therein IP 2 1 The Economic setting section has not assessed all sectors - The sector of interest to the project is discussed in the next section and this section merely deals with I he overall economic setting 12* 2 3 5 Was this comment necessary to be to that detail - •’ Clause 4 .1 10 of TOR may be referred I ' Jll Does the ADP II aim at maintaining the present level of .Agricultural production ” I las yield not been decreasing ’ The sentence should read in totality which shall explain the aim of ADPII 314- 31 4 In some section it is stated that all ADP II lands tall under the ownership of (he State Farms - Hence the statement presented are net correct * '■ The extra production of food and fodder through the project shall be available for local consumption irrespective of the ownership of the land 15* 4 3 1 Last sentence on meeting of the irrigation requirement hv the head works should be checked - This is the current situation 16* 4.6 3 As the head quarter of .ADP fl is a temporary office, it should be removed - ♦ • The heading of the paragraph is “Existing infrastructure ' What has been stated is factual irrespective of the temporary or permanent nature of HQ of ADP 11 17* 4.7 I The first sentence requires modification as it appears to mean I AR is located at Melka Werer - ■ :■ “Water” shall need to be changed to ” werer*1. « From ch 9 5 to 2 1 3 the right embankment of MD2 do not let in waler What provision is made to prevent the dyke from the flood of the country side? Pen meter drain’’ also at the outfall - •* The specific section to which this comment relates is not indicated and hence reply to difficult The question is also not clear The right dyke top is higher than the 50 years flood of the river Awash at the outfall sluice of MD2 throughout its length and hence flooding from country side over topping the right Dyke of MD2 is not possible 18* 5 2 3 30 line No 14 1.4 Km should read 14m- ** 1 4 km is to corrected to I 4 m The proposed bridge at ch 19 795 km of MDI should be checked - •’ It has been checked 4s 2 4{iii) The proposal to deepen SD7-5 * SD4-6 combination should be checked against the ADP-1 designs > ♦ • Section 7 of .Appendix 2 of Annex- 7 may be referred in this connection 5 2 5 (1) TO5/I/1 following into SD4/I Not shown on drnwing/Fig 3 - « • TD5/1/I should be corrected to TD5/4/I and in Figure 3 TD5/4 is to be corrected to TD 5/4/1 5 2 7 Location of the area to be reclaimed is not indicated Annex II - ♦ • Area to be reclaimed has not been discussed in section 5 2 7 5 3 5 The comment that the choking of the trash rack bv floating debris is not frequent these days must be checked with the PCC Management - ♦ » The statement made is after consultation with PCC officers at site 536 5J ’’Construction of a barrage to replace the existing weir" proposal has to be checked h is understood that there is a proposal to raise the weir not to replace it - • • NEDCO's report may be referred There is no comment on the the quality of waler and lhe variation of lhe flow throughout the year •• 54 Section 5 J 2 may be referred Water quality has been discussed in Annex 8 Under Engineering works, comments on the condition of the following should have been included b 1 Roads 3 Secondary and tertiary canal s/D rains - House 4 Land levelling Roads, House and Lund levelling have been considered as infrastructural facility and not m Engineering work and have been touched upon in 5 2 and elaborated in Annex 11 52t} . s 5 a The problems of ADP II (Environmental) ;md the measures to be taken to resolve the problems are not presented here * Sub section 5.5 8 is a pan of seccron 5 5 on environmental impact and the section 5 5 as a whole should he referred for the sought information 27* 5 7 2 Pig 6 does not show arrangement for consultancy services ** Figure 6 is the Implementation schedule. Reclamation leaching - where is it described 1 • Please refer to the section 5 2 of Annex 11 (b) the calendar year must be rectified • comment not dear • The construction equipment schedule which formed the basis tor the construction programme is not indicated ~ ’ The construction agency has to schedule il as per lhe const ruction programme 28* 5 8 5 29* 6,0 This comment depends on the source of funds Other funding agencies might be considered as well Therefore, it must be deleted > • ■ Section 4 3 8 of TOR may please be referred Executing Agency document indicates this to be a contractor but what is intended should be the client, and which should be described. 63.0 Should be adjusted accordingly - ♦* 10* 6 3 2 Section 6 2, 6.4. 6 5. 6 6 are not related to the contractor but with the client Section 6 1 and 6 3 indicates the requirement of thr evecutinc agency thal is the contractor' In building his rates - It is indicated that the contractor uses the trenching machine and pipe producing plant of the client The option of hiring these equipment if lhe ownership is changed, or the contractor using hrs own equipment has not been considered 6Section 4.2 I of TOR may be referred in this connection ti would not be advisable to let the construction contractor hire new equipment and the existing ones which have not run through full life arc not used 6.6 2 Third sentence requires editing There is no third sentence in (he section 6 6 1 The role of the PCC in monitoring the environmental impact is not stated ■ No discussion of various roles has been considered necessary as reference the Annex where they have been given are indicated in the sub section The role of the PCC in monitoring the environmental impact is stated in the preceding paragraph (no 6,5 2) to this sub- section The intention of the State Farms to hand over some lands io the Region is not indicated - It cannot be done without an appropriate formal notification 7.2 The price of cotton used does not show whether it is for lint or seed cotton - Table 2 I of .Annex 11 indicates this to be seed cotton 8,1 3 Abandoning Period of 12 years - how concluded following water table9 Scenario under without the project' has been discussed in Section 8 5 of Annex 12 and Table 11 at page 8-28 of Annex 12 may be referred in this connection 8 I 5 The works 'show” should be "shown" - Noted Why does the Net incremental return reaches maximum after 13th sear7 Tabic 2 14 of Annex 13 indicated this incremental cost of 5 16 M. Birr on the 25th year is not shown in the table - The figure given is 3.16 m in the section 8.22 and not 5 16m This figure is a simple discount @ 12% for 25 years of the amount S3 66 rn birr as shown to be the net cash flow of (53 66/1 1225) 7Referenced sett ions 3. U it S. I 2 should be checked as they do not appear to be correct - The correct reflection is in section 8.11 and 812 Conclusion The conclusion made on ground water rising following is not properly presented as the failing trend is icmporary - The presentation is covered in details in Annex 3. Reading (iv) with (v) will give an overview of when lhe change in tailing trend occurred . where is lhe water balance trial discussed r’ Trial Water Balance is given in section 8 0 of Annex 12 Where is the change in irrigation application discussed and proposal made7 The change in Irrigation application is discussed in section 7 8 of Annex 12 Is the current rate of application related to yield as the current yield level is 21qt ha of cotton ? .Attempt to correlate yield with irrigation application made in the past indicated no clear relationship as yield depends on various other factors. The option of using gravel as pLpe surround should have been considered - Section 4 2 I of TOR may be referred in this connection Proposed area to be drained (1974 ha) should he broken down into Meika Sadi & Amibara Areas as done aLready in other sections - Table 1 I of this Annex may be referred Land levelling, as it is a pan of on-farm works, it shall better be done by the Stale Farms - leaching as well If required technical assistant should be given by the Ministry Noted PCC can make some contribution io assessment of the groundwater and sod salinity data, other than data collection. Rut the final assessment could•♦ be earned out by the Hydrology or Design Department which have the required experts - Noted VOL 3 ANNEX I TOPOGRAPHICAL DATA ANALYSIS 41* 42* As the three Maps were taken from other existing Maps prepared by others, the source should have been coated on each map •* ■ « The plans have been prepared from documents procured from various offices of the client and showing there on each plan would have been difficult. It was noted that although the Terms of Reference (TOR) require that topographical maps of 1 10,000 scale should be used for design purpose including soils maps, owing to the unavailability of the map, the firm used maps of 1 20,000 scale It was explained by the project office that, the consultant was also provided with a maps of scale 1:2,500 to argument the 1 20,000 scale maps As the design reports do not indicate that the latter maps have been used, which are very essential for the design of the works and quantity estimates, the firm is required to confirm that the maps have been used, and present the copies of the draft maps used - « ■ There was discussion with the Study Coordinator of the ADP1I and I 20000map was used on basis of his written advice This has a reference no ADP fl/G 14 dated 01 Jan, 1995 from the client VOL 3 ANNEX 2 HYDROLOGICAL / HYDROMETEOROLOGICAL, DATA / ANALYSIS I he following are comments on the hydrological f hydrometeorological Data/ analysis Report and the replies on the comments on the Draft Drainage Design report 43' 2 1 tn the replies it is stated that because of the discrepancies observed between the monthly summaries and the daily data, only the data of I he LAR were used In the document, however, the data of other stations were used for analysis In as far as the data of other stations are used in (he analysis, section 3.2 should also consider that data of these stations - 944* 2 2 45* 2 6 4b" 2 7 28 •* The annual figure of rainfall for other PCC raingange stations were not available with PCC and only the mean annual rainfall of the entire catchment based on their 16 raingauge stations could be collected from PCC. The data of only 2 stations i e (AR Melka Werer and PCD-3 were available but on scrutiny discrepancies were noticed in the data ot PCD-3 Therefore, the data of only Melka Werer have been used In the replies, the coefficient 0 7 was derived by comparing the mean annual rainfall of 16 number of rainfall recording stations located in and around the study area with the mean annual rainfall of IAR If this is so the data of these 16 stations should be presented tn the data availability section > “ The abve reply for section 2 1 would indicate the position From the replies Qp data far the year 1983-1994 (table7. Page 5-10 did not synchronize whilst the data for 1983 - 1985 (Table 7 page 5-4) did As far as the data for 198 J - 1987 is a subset of the data for 1981 • 1994. it is not clear why the data for this period did not synchronize - ** Table 7 at page 5-4 merely gives lhe discharges at the gorge gauge site for the periods when there were annual peaks at lhe Melka Werer gauge site and not lhe peak discharge at the gorge gauge site Hence the data presented are not a subset of the Table 7 at page 5-2 to 5-3 Sediment transport is not outside the scope of the present study since it is stated in the technical proposal and also it is essential since the study area consists of alluvial sediments - The sediment transport referred in lhe Technical Proposal is in the context of the same for the drains proposed for lhe problem area and not for the sediment transport of the river Awash itself Observational error might hold true for the 1992 data with a peak of 677 (Wm s at the gorge site and lhe corresponding value of the order of 20 r to 45m /s in the Melka Werer station However, lhe data for the rest of lhe years requires additional explanation. For instance, the conditions prevailing along lhe stretch of the river between the two grouping sites A reference to the last paragraph of page 5-5 of Annex 2 shall indicate that lhe attenuation between the 2 sites was considered to be in general conformity of the findings of the model studies of the Master Drainage plan (1985) and hence no elaborate explanation is considered necessary 10VOL.4 ANNEX - 3 HYDROGEOLOGICAL DATA /ANALYSIS A Major Issues 48* 3.12 Though the commitment of the technical proposal was to update the hydrologcogical map of the area, in a situation where this hydrogeological map has not been prepared by any of the past studies, the consultant should have prepared it based on the attached geological maps of the area, existing wells information and further hydrological interpretations Hydrogeological map and representative x-seclions of the project area are the basic and fundamental technical requirements that should be provided for the needs of groundwater modeling exercises and for the design purposes 3 2.1 The question forwarded under this item was not to indicate some example borehole logs, but to discuss the hydrogeology of the area as per the geomorphological classifications made This is required to be presented area wise and in relation to adjacent boundaries 3 2 4 The conclusion referred under this item i.e "the aquifer was essentially without flow" should have been confirmed by some investigations at design levels as well as some hydrogeologic interpretations and comments be made in relation with previous findings 3.2.5 a At the design level, and when the extent of the depth of unconfined aquifer is not known by previous studies, data gaps should have been identified and filled 3 2.6 In the same way as the hydrogeological map, even if ground water modelling of the area was not sought specifically in the TOR, it is clear that the consultant has a proposal to perform this duty as to the understanding of the contract agreement Thus, the modelling exercise should have been attempted to justify the conditions of its effectiveness and results compared with the result of the statistical methods, I his model tonld also be developed and rehned as more data is available in the future so as to serve as a quick tool for future management of the project and further studies The consultants have again to reiterate that the objective of the hydrogeological study was to evaluate the grnundwater occurrenccbencath the areas of Melkasadi and Amibara areas and determine the depth to groundwater and configuration of the watertable in so far as these factors might affect the design of drainage work. 11The correction of "combined' to "u neon fined" has not been made in the final report - The correction in page 4-2 of Annex 3 indicated line 9 Full stop ( ) be changed to semi colon (;) and capital (T) there after be replaced by small (t) Line 10 Tncontincd" should be to unconfined 50(a)* 3 2.8 In the draft final report, it was indicated that lhe Master drainage plan of Halcrow. 1985 has indicated the existence of Perched water table, while rhe final report indicated that the present study has not indicated any specific evidence about the existence of purched water table - ■ ■ The misprinting of draft final report has been correled in final report 50(b)* With respect of the above issue, the following questions needs to be answered a In case of these conditions how does all the conclusions made by previous studies be guaranteed to be taken as correct conclusions without checking them by brief investigations for the purpose of design works or up-taisal of previous findings b. In the absence of hydrogeological x-sections, how could be possible to visualize the sub surface conditions of the area and which finding nr conclusion is going to be adopted for applications ■ The response to para 3 1 2 io 3 2 6 as given above may be referred V0L.5 ANNEX 4ASO1LSI RVEY/SOILCLASSIFICATION/DATA ANALYSIS VOL.6 ANNEX 4B AUGER BORE DESCRIPTION The reports cover all soils data and explanations required for the study and have adequately replied to the questions raised. However, it is deemed that, farther analysis could have been presented using the same data, in area such as land reclamation Noted Consultant feel that land reclamation process should commence after collecting fresh base line data then prevailing ar the lime of reclamation 12V0L.7 ANNEX 5 52* Chap 6 As (he eradication of small pox was proclaimed at a national level two decades ago, from where did the firm got (he information thai the Afars are suffering from (he small pox > *■ Small pox may be read as chicken pox VOL? ANNEX 6 53* 2. l.3(ii) The opposition of Afars to the construction of any channel through their land MD2/ is not affereding the man made swamp but they are affereding (he blockage of flood path to their grazing area - ** 2 1 3(ii) of annex 6 gives the reason due to which construction of MD2 should have precedence over other components of phase II and hence the relevence of the comment is not clear The consultant had occasion to face afar opposition even towards (he survey w hen the views of afars were not to allow any channel dug in the area 54* 2 I j (tii) The man made swamp” should be deleted from (he report - ** A swamp has been observed which according to the consultant is lhe result of certain development activities in the area as made very clear in the study Hence, there is every justification to call it a man made swamp' 55* 2 I 3(vi) delete ’Land on their side1 There is no section 2.I 3 (vi) The use of wards land on their side' on section 3 I (iv) seem to be appropriate VOL# ANNEX 7 DETAILS OF ENGINEERING STUDIES Sb* Question No 4 5 and 4 7 The reply given for the question raised in connccnon with the additional drainage rate of 2 5 mm/day has been noted However, as the report has already indicated that (he State f arms have modified lhe irrigation schedule, and also stated that the contribution to groundwater is almost nil, how can the same drainage rate apply9 further explanations are required > h has been clearly elaborated in Annex 12 that (he State Farm's water application rate as adopted in recent years does not provide the required [lose ot waler needed for flushing □down the salt accumulated in the soil profile upto the root zone The application talc cannot therefore be continued indefinitely without serious deterioration ot (he productivity For sustained production, it is essential to enhance the rate of watei application and the adoption of higher water application rate shall need sub surface drainage arrangement 57* Quest No 4.8 Although the reply indicates that adequate explanations are given in Annex 11. the explanations provided are not satisfactory Contrary to the reply, in paragraph 4 3 3 of the TOR. the consultant was expected to study the problems of leaching and secondary salinization He was to review the existing data, which included the review of on going soil leaching and provide recommendations accordingly - " The reference in para 4.3 3 of TOR is for the study of the data on problems of leaching and secondary salinization' which evidently means the leaching of secondary salinization distinctly different from reclamation leaching The Problem of leaching and secondary salinization have been discussed in section 8 4 of Annex 12. VOL.? ANNEX 8 DETAILS OF ENVIRONMENTAL STUDIES 58* The consultants have adequately replied to the comments made and have revised the report incorporating the required informa non in the desired from However, the executive summary should be summarized to two to three pages as required in the TOR Kindly refer the comment I on draft El A report, it was suggested that the format of report to be followed. The executive summary given in draft report was brief of 3 pages only and was giving the overview of the whole work. Due to the comment on draft report, executive summary was revised in the final report. Format of the report itself if of 2 pages so executive summary can not be of 2-3 pages if it follows the format Preface 2nd para line delete ADP I as ADP I by it self is not the cause of environmental problems ADPI has definitely caused considerable environmental degradation of the area by causing stagnation in the excavated bed of MDI in head reach Ind hence consultant feel that suggested deletion is not warranted 6ft* Introduction Why only 1698 ha to be abandoned. 4( lx and x) SD5 and SDb are not the problem of flooding in the area - 1698 ha as given in Appendix 4 2, Table 4 2 in Annexure 8 is the area with GWL within 2 m the ground surface 146 ]* SDS is SD5 A SO? combination and SDb is SD4 & SD6 combi nation and correction tn this effect is indicated Appendix 4 1. 4.2. 5 1. 5 2 should be incorporated with Annex 2.3.4A and 4B yccordingly Table 1-12 in appendix 5.3 should be reconsidered or incorporated with other Annexes accordingly •• Annex 3 is Hydrogeological Dau Analysis. Annex 4A is soil Survey / Soil classification Data / Analysis and Annex 4B is Anger Hole Description The suggestion of incorporating appendix 4 1, 4 2, 5 1 and table 1-12 in Appendix 5.3 in the above Annexes is not considered necessary VOL J 1 ANNEX 10 DETAILS OE COST ESTIMATES Generally it was observed that the costs are very low and do not reflect the reality I he costs for concrete and excavation for instance are not substantially different from those prevailing several years earlier Hence it was decided to review the basic rates for the important items for comparison with those provided in the report It was recommended that the consultant should provide the breakdown of the rates The consultant is also to be requested to provide the estimate or list of construction machinery required to complete the works within the specified time and also that formed the basis for the rates For instance, the proposal to complete the works using the existing one old trenching machine for pipe installation was deemed to be underestimation - Unit rate for Excavation of drain to form emabnkment or dispose upto 250 m with depth of excavation 3 5m for MD2 in Amibara drainage Project Phase-Il |0 35 Birr cum When the excavation is done using shovel, dumper and tractor Dozer (tnachanised excavation) Similarly in India in Indira Gandhi Nahar Project (1GNP) Rajasthan mechanised Earth work cost in similar soil and with similar equipment is = 35 Rs /cum 5 95 Birr/cum Unit Rate Collected from RAJ AD. KOTA Drainage Project. India are 15Cost of sub-surface drains (including cost of pipe, labour, operation of Trenching Machine) = Rs 25.000/ha = 25000 x 0.17 = 4250 Birr/ha According to Anncx-10 Details of cost estimate' Page 9-1 Total cost of the sub-surtace drainage work - 16,953732/- Birr Total .Area for sub surface drainage = 3974 ha for .Amibara Drainage Project Pha$e-ll Cost per ha = 16953732/3974 4266 Birr ha Unit Rates adotped for Earth work and sub-surface drains in the Amibara Drainage Project Ph-I! are comparable with the ongoing project in India, though the fuel cost, labour cost and import duty are higher in India As rhe major cost is covered by three items namely S No Item i Earth work of main drains ii Major drainage structures iii Sub-surface drains Percent of total Cost 31% 14% 29% for item (i) & ^ii) Detail Analysis of Rales is made and found to be correct For item (:) & (iii) the rate adopted in Amibara drainage Project was compared with IGNP amd Irrigation Project and RAJ AD Drainage Project KOTA INDIA and found to be comparable We teel that unit rates and costs in .Amibara Project Ph-11 adopted is correct and realistic Attention of the ADP-II authorities is invited to Point 4 of Annex. 10 (Details of Cost Easli mates) page 1-2 & 1-3. As will be observed the unit rates for various items of work were developed on requirements of material, plant and labour Regarding the basic rates, the same were primarily based on the contracted rates of ADP-t. updated with the ruling percentage oT escalation (30%) .md is considered reasonable As for the breakdown of rales, reference be made to Table-! at page 3-2 of Annex-10 which is self explanatory in this respect Detailed analyses of Rates for two major items namely. Reinforced concrete (C 20) and earthwork in Excavation have been worked out 16tas per the rates indicated al page 3-2 of Annex-10) and are enclosed at Annex u re C 1 and C2 Regarding the list of construction machinery required to complete the works, reference is to drawn to Bill No 4 and Bill No 5 of Annex-10 (Page nos 11-1 to 12-1) in which list of machineries and spare parts have been indicated The Trenching and pipe making requirements have been assessed based on the equipment all eadv available with the Project Authority This is m line with the provision stated in TOR 17Anneiure C I Analysis gf Rates Cement concrete C 20, Unit I cum Particulars Quty. or Rafe Com Nos, in Rirr (Birr) Materials Aggregate 0 B6 cum 3 5/cum 30 10 Sand. 0.4 J cum 10/cum 12 90 Cement 8 40 bags 20/bag 168 00 Water & Admixtures LS LS I DO 21200 Labour Skilled 1/4 Nd 16/<lay 4 DO Unskilled 1 No 8/day 8 DI) Sipderies T and P etc i Lump Sum 90 (X) total J 14 (10 Add Contractors overhead 30% 94.00 Add contractor's profit 10% on Director cost and overheads 40 80 GRAND TOTA L 449 00 Kates per cum - 449 00 Birr !8An nr in re C 2 RATE ANALYSIS FOR EARTH WORK IN EXCAVATION IN DRAINS Unit : I cum A) Machinery charges i) Shovel Use rate per working hour Output per working hour Rale/cum ii) Dumper Use rate per working hr Output per working hour Rate/cum hi) Tractor Dozer Amount in Birr 180.00 Bir - 100 cum = 180/100 - 125 00 Birr = 3 5 00 cum = 125/35 I 80 3 57 Assuming that one shovel will work at one place and one tractor dozer will be enough for one shovel Output of shovel - Use rate of Tractor Dozer hr — Rate/cum Bj Labour i) Skilled L S 0 t ii) Unskilled LS 0 1* TOT Al 0 45 100 cum 142 Bitt 142/1 no 1 42 6 79 Total Direct cost {A)*(B 1 - 6 79 - 0 45 7 24 Add contractor overheads = 2 17 (30% of Direct Cost) Add contractor Profit (10% of Direct cost +■ overheads} = 0 94 GRAND TOT .AL 10 3 5/cum 19Anneiure C 3 AM1BARA DRAINAGE PROJECT Bill No. Title Percent ofTolal Total Birr 1 General 03 177.867 Section I works 2A Earthwork nt'Main Drains 30 67 17,895,415 2B Outfall structure of MD2 32 1,894.115 2C Major Drainage Structures 13 7 8.012.242 Section 2 works 3A Earthwork of Secondary 87 5.086,885 3B Sub-surface Drains 29 1 16,953.732 3C Other Drainage Structure 2.2 1.299,312 4 Trenching and Pipe Marking 15 855,360 Requirements 5 Daywork s and Provisional 15 852,361 Sums Total amount of Bill of Quantities (Bill 1 to 5) 53,027,289 Allow for contingencies 10% of Bill items (I to 5) 91 5.302,729 Total amount of Tender 100% 58,330,018 Main items 2A Earth work of Main Drains 2C Major draiqge structures 3B Sub-surface drains SOURCE: Annex-10 (Details of Cost Estimate) Page 9-1 20Anneiure C 3 amibara drainage project Bill No. Title Percent of Total Total Birr 1 General 0.3 177,36? Section 1 works 2A Earthwork of Main Drains 30 67 17,895,415 2B Outfall structure of MD2 32 1,804.115 2C Major Drainage Structures 13 7 8,012.142 Section 2 works jA Earthwork of Secondary 8.7 5,086.885 3B Sub-surface Drains 29 1 16,953,732 I 3C Other Drainage Structure 2.2 1.299 J 12 t 4 Trenching and Pipe Marking 1.5 855,360 Requirements 5 Dayworks and Provisional 1.5 852361 Sums IT Total amount of Bill of Quantities (Bill 1 to 5) 53,027.289 Allow for contingencies lij^ o of Bill Itemj (1 to 5) 9.1 5,302.729 Total amount of Tender 100% 58,330,018 Main items 2 A Earth work of Main Drains 2C Major draiage structures 3B Sub-surface drains SOURCE : Annex-10 (Details of Coil Estimate) Page 9-1 20VOL.12 ANNEX 11 DETAILS OF INFRASTRUCTURE ASSESSMENT 03* The report does not provide the status of the existing infrastructure, which should have formed the basis of the estimation of the cost - '• The present status of the Irrigation System is given in para 6.0 of Appendix I of Annex fl The Appendix 3 gives the present status of Housing and office accommodation and Appendix 4 for the farm development works 64* Further, the basis for the estimation of (he foreign exchange was not provided - The foreign exchange provision is on the basis of our assessment of necessary imports of equipment / parts 65’ On page 5, the statement indicating that (he construction of phase 1 was ongoing should be corrected, as the completion certificate was issued April 3 IJ9%r prior to the completion of rhe study for Phase II - Il was also noted that date of report was missing from the covers of all reports ’' The Consultants have found work on ADPI going on almost to lhe date of the submission of the Report on ADPU and it was never made known to the consultant that any completion certificate was issued on April 31, 1996 Moreover there is no date like April list Correct dale of completion may be intimated by lhe client The client may decide if the date of the report should be the date of its submission or lhe date when (heir comments are finally reconciled VOL. 13 ANNEX 12 DATA ON AGRICULTURAL ASPECTS 1 Page I, Paragraph 1-L2, line 4with the alarming degradation which are widening every year and the falling economy____________ _ this does not seem the reason why & may not be lhe only cause Other possible causes are nut assessed well - The lines quoted indicate why effective land use planning based on the knowledge of the physical resources of the country has gamed serious attention This is not at all an attempt to indicate the reason of falling economy 2 Page I, paragraph l-LJ the traditional classification is worth mentioning than the scientific way of classification Agro-Climatic Zones ' - 1 ** Both have been mentioned 2168’ 3 Page 1-3. paragraph 1-2-2________________ constraints to agricultural development encompass etc, is not mentioned also land fragmentation & re-distribution 4 small holding ■* 69* 4 With Indian experience, we do not consider there to be Chief Constraint Page 8-6 & 8-12___________ leaching requirementsare not thoroughly addressed & strategies are not clearly put - • ■ Pages 8-6 and 8-12 arc the review of past recommended irrigation applications with special reference to the necessity of leaching The subsequent pages uplo 8-16 may be referred for further classification on the possible strategies 70* 5 Page 9 3 4 9-4Double cropping The paragraph has to be revised so as to make the recommendation suit to the regional/local conditions ■ The section quoted indicates the theoretical possibility of a second crop following catton The specific recommendation may be seen at section 12 3 pages 12-8 tn 12-10 71* 6 Page 11-2. 11-3. 12-2,It should be recognized that plants grow in a very complex plant soil water system and not in the applied irrigation system Our concern with irrigation water should be guided accordingly - Page 1 1-2. 12-2 mdicaie the effect of salinity on cotton and maize yield and other causes of yield - loss Page 12-2 indicates the general approach designing irrigation schedule tor maize In these context the intention of the comments is not clear 72* 7 Page 8-6 & 8-12 ____ table 20, 21 22 text - Review of recommended irrigation application need clarification than it appeared in the Table 20, 21, 22 and also 23 4 24 docs not come under Review of Recommended Irrigation Application’ but they come under section 8 3 ‘Water Balance'1 where the approach to workout the tables have been included as niven in page 8-3 to 8-6 8 Page 9-1. Agronomy of cotton & Maize. need to be elaborated The consultants feels that the section 9 0 from page 9-1 to 9-3 covers the relevant aspects. 2274* 9. .All importanl factors management practices not clearly put - salt tolerance of crops, irrigation methods & soil are not thoroughly addressed &. strategies arc 75* 10 Section 11 2 & 113 may referred for salt tolerance of crops Section 3 0 covers the existing irrigation system and section 7.0 covers the water management aspect The importance of irrigation and high cost of running are the major facior for limiting development elsewhere tn order to combat these problems what would be the solution from the consultants points of view in the project area - ■ ■ Cost of running the irrigation system is to be compared with the resulting benefits and doing so will make it clear that the benefits far exceeds the running cost as carried out in the Table of Annex 12 VOL. 14 ANNEX 13 DETAILS OF ECONOMIC / FINANCIAL ANALYSIS General 76* The methodology and approach of the analysis is quite good and the acceptable standard It is very concise and precise Noted Specific Comments r The ex-farm prices of cotton (Birr 424 20) and maize (Birr 70.00) are considered to be low and high respectively These prices should be reviewed - The prices are worked out tn Table 1.3 & 16 based on price projects as per standard bulletins 2 It will be advisable to show all the inputs of yield as well as benefit build up of each year up to the optimum level - In view of Table 2 12 & 2 13 giving cost and value of production from year io year with break up of area related cost1 and yield related cost' and these unit costs are shown in 1 able 2-j it doesnot seen necessary to show any further detail The estimated cost of flood protection works and leaching are considered to be low. 23•* The left bank of MD2 shall serve the Hood protection for considerable length which is incorporated in the estimate of MD2 Some provision of strengthening the existing Western Dyke is made for in Bill 2 A of .Annex 10 Leaching details and cost are worked out in Appendix 4 of Annex 11 which seems to be adequate 70* 4 The area is mainly the dwelling place of Afar pastoralists therefore due consideration should be given to enhance the livelihood of these pastoralists through community participation, women in development, veterinary services, (Extension services), pasture development Afforestation programs and others Furthermore budget should be provided to promote such scheme ' ' The sociological aspects have been covered in Annex 5 and the annual cost of the social work is provided for in the Annual cost of the project as given in Table 3 3 Annex 13 30 • * 65% the raw cotton is the seed, 34% is lint and 10% is roughage How are these proponions treated in the Financial and Economic analysis - ** Table 1.3 of Annex 13 mav be referred 8 1" & All ihe Engineering costs should be revised. because all the costs are considered to be low (Birr 77 Million) This will have ihe impact on the termin.il as well as on economic analyses Furthermore, the financial rate of return (FRRi and the economic rale of return w ill be change Refer Reply to observation tb Annes* 10 Details otCost Estimate. Cost calculated .ire correct so engineering costs. FRR and FRR will remain unchanged 24COMMENTS ON CONTRACT DOCUMEN I 1 Title on the Covering for both volumes should have to read as THE FEDERAL DEMOC RATIC REPUBLIC OF ETHIOPIA MINISTRY OF WATER RESOURCES AMIBARA DRAINAGE PROJECT PHASE -II CIVIL ENGINEERING WORKS TENDER DOCUMENTS VOLUME 1 JUNE 1996 ’ Noted INSTRUCTION OF TENDERS The number refer to the paragraphs used in ihe document I • Description of the Works It would have been more appropriate if it was elaborated including location of works. type of Contracts involved, it only describes scope of the Works * Location of works, Type of contracts involved aie discussed in Detail Chapler-3 General of Section 4 Technical Specification under item I 02 3 1 * Shall have to read as only firms which have been pre-qualified and which are deemed to be eligible under the requirements of the African Development fund will be allowed to tender •' This has been covered under 3.1 and 3 2 3 3* First & Second line delete and substitute by A Tender submitted by a joint venture of two or more firms must be accompanied by the document of formation of the joint venture duly registered and authenticated by a Notary Public person oi other official depute to witness sworn statements m which is defined precisely the conditions under which the joint venture will function, its period of duration. 25the person auihroized to represent and obligate it, the address lor correspondence, the participation of the several firms forming the joint venture and any other information necessary to permit a full appraisal of its functioning including a clause to the effect that comply with the following requirements ** Agreed, we will add b) Delete “Shall*' and substitute "have to" *• Agreed 5.4* add the following The Tender shall be responsible for obtaining all his own or his representative Visas, internal travel permits, transport and hotel accommodations Upon reasonable request, the Employer will provide supportive letters required for obtaining such visas & permits ’ * Agreed 7 I* Fourth line after Tender add" not later than 30 days before lhe date set for submission of Tenders" Delete the Iasi sentence & Substitute by "questions submitted will be consolidated at intervals and issued together with answers, to all Tenders The questions and answers as issued will give no indication of which Tenderer raised the questions Questions and answers will not form pan of the fender or rhe Contract. If. arising from a question, it is necessary to vary the Tender Documents, then an Addendum will be issued in accordance with Clause 8" * * Agreed 10 1* First line Change the word ’prepared" by submitted” Agreed IL U Add No claim shall be entertained by the Employer for alternation of the Tender Price on lhe grounds ol failure to obtain accurate information or nf any alleged misrepreseniation or misinformation ** Agreed 14 2* Forth line add To" after acceptable • * Agreed 2614 6* Delete Clause under (b) and substitute bv 'If the successful Tenderer fails for any reason to sign the form of Agreement and lo provide Performance Security in (he form and at the time stipulated in the Conditions of Contract and such extension of time as may be granted by the Employer that portion of his Tender Security will be forfeited to and refined by the Employer in amount of the diffidence in money between the Tender and the amount nt which the Employer any legally contract with another party to perform the work, if the latter amount be in excess of the Former ** Agreed 17 I* line 3 'Tor'1 shall read as 'Torm" *" Agreed 20 I ■ Delete and substitute by the following "Tender received after ihe deadline for submission of lender will not be opened and w ill be kept at ihe offices of the Employer for collection by the said Tenderer Should these not be collected within a period of 4 weeks from ihe deadline for submission, ihen the Employer will dispose of them as he sees fit " ■ Agreed 27 I’ Even though the tender is priced in Ethiopian Bin. the Tender is expected to quote his Foreign Currency Requirement How about if the following is added Agreed However ihe rates of exchange for the purpose of the Contract are those quoted by the Commercial Bank of Ethiopia on the dale 28 days before the due date for submission of Tenders'1. Covered at clause (12} currencies of Tender and Payment 28 5* add third line "and. if ihe Tender is unabk to provide satisfactory explanations thereof, 'the Employer Agreed 33 1* First line "be,r shall read as - "he" *■ Agreed 27Additional Cl*ul« (Subject to DhcuMionl Incomplete Tender Tenderer must submit otters for the whale of the Contract works in accordance with the Tender Documents, ensuring that information provided for lender evaluation is in ink or typed and dearly legible Tenders submitted for separate sections only or Tender which arc incomplete will not be considered Agreed can be covered as 18 4 Custom Duty and Clearance Tenderer are advised to familiarize themselves with any laws and resjula!ions governing the payment of Customs Duly and all other taxes on goods, plant and equipment imported into the Federal Democratic Republic of Ethiopia in addition to the Ibnnalihes associated in obtaining clearance thorough Customs Agreed can be covered as 0 J F Tender Documents Confidential All recipients of the Tender Documents (whether a Tender is submitted or not) shall treat rhe deiads of the Documents as private and confidential Agreed can be covered as 6 I Instruction Not forming Pari of the Contract These instructions to Tenderer shall not form pan of the Contracl They are intended only to aid Tenderer in the preparation of their Tender Agreed add on Page I -1CONDITIONS OF CONTRACT Conditions of Contract for works of Civil Engineering Construction Federation Ilnternationalc Des (ngeniurs-Coseils Fourth Edition 1987 has to be adopted accordingly Part fl and Tender Forms have to be adjusted C onditions of contract for works of Civil Engineering construction FID1C fourth edition 1987 by and large adopted But at some place they have been modified to suit the requirement of TOR and ADP-I construction experience 29I I I I B 0 B IJ II t I 4 II I I I I I I
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