ECoP-1.0 Planning & Design

Transcription

1 ECoP-1.0 Plannng & Desgn 1.1 General Ths code of practce detals the factors to be consdered durng project preparaton to avod/address envronmental concerns through modfcatons n project desgn and ncorporaton of mtgaton measures. Gudelnes specfed n the IRC: SP-20:2002 and SP-48 for project preparaton are to be followed n conjuncton wth the measures suggested as part of ths ECoP. 1.2 Fnalzaton of Algnment All requrements of Secton 1.5 of IRC: SP-20: 2002 n selecton of algnment should be met wth. In addton, adequate consultatons wth the communtes to dentfy the concerns and preferences need to be taken up durng selecton of the algnment. Rural roads, beng low volume roads, shall be algned to follow the natural The algnment should be Short Easy and safe to construct and mantan Economcal Lad on frm ground Aesthetc and Havng least adverse envronmental mpacts. topography. Fnalsaton of algnment shall be carred out n accordance wth the provsons presented below Algnment shall conform to the natural topography as far as possble to avod excessve cut and fll. In case of hll areas the algnment selecton should extend to ncorporate the provsons of IRC: SP- 48:1998, Hll Road Manual Specal care should be taken to algn the roads along the hll sde whch s stable and where cuttng on hll sde causes least dsturbance. The geologst shall nvestgate the dsturbance lkely to be caused keepng the geology of hll slope n vew. He shall also study the affect of earthquake on the slope gradent. Hgh Impact Road Low Impact Road Hgh standard roads Good geometrcs Moves large volume of traffc rapdly and safely. Huge cuts and flls, stablty of slopes Damage to vegetaton, and Dsrupton to natural dranage patterns Low standard roads Conforms to the natural topography Sutable for low volume rural roads and low travel speeds Reduced envronmental mpacts o Reduces the cut and fll, o Reduces damage to vegetaton o Mnmse changes to natural dranage patterns An nventory of all envronmental features along the proposed road s to be prepared and marked on a revenue map. Ths would be conducted by the PIU n co-ordnaton wth the local communty 1-1

2 and the revenue offcals through transects. Consultatons wth the local communtes are to be conducted durng these transects to obtan ther suggestons and ncorporate ther concerns to address the potental envronmental mpacts. Suggestons of the communty durng the transect walk are to be ncorporated, to the extent possble, whle fnalsng the algnment. The methodology for conduct of transect shall be as per ECoP-20.0, Consultatons for Envronmental Aspects. Inventorze the followng Trees Forests f any Dranage lnes, rvers and water crossngs Irrgaton water courses Water bodes Grazng lands Cultural propertes Utltes Communty facltes Schools Hosptals Major junctons Seasonal markets or cultural congregatons Locaton for Ramps, Cattle Crossng and Bus Bay Locaton for stackng mantenance materal Locaton for ducts for threadng agrcultural ppes Route Algnment to avod fellng trees In case of flood prone areas and/or areas wth very flat slopes, hydrologcal surveys have to be conducted before algnment fnalsaton. Inputs derved from these surveys such as the need for provson of culverts/brdges or other cross/roadsde dranage structures should be consdered n the algnment fnalsaton. Routes nvolvng hgher costs on dranage compared to alternatve routes should be avoded. In case of hll areas, geologcal studes have to be conducted to determne locatons of loose rock, sol or potental stes for land sldes. 1.3 Desgn consderatons All the road desgns should conform to the specfcatons of IRC:SP-20:2002, Rural Roads Manual. Addtonal measures suggested for mnmsaton of envronmental mpacts, safety of road users and for enhancement of communty benefts are ndcated n ths ECoP. Where t s necessary Recommended Practces for Algnment Fnalsaton Utlse exstng revenue tracts as far as possble Follow natural topography Conform algnment to wthn property boundares wthn vllage areas Adopt geometrcs that do not compromse on safety requrements Avod crossng power transmsson lnes, water mans, gas lnes etc Avod algnments affectng vegetaton and fellng of trees Avod algnments close to streams Avod encroachment of water bodes and Avod passng through natural habtats as desgnated forests, sanctuares, natonal parks and wetlands to devate from the IRC specfcatons, the followng desgn consderatons shall be the absolute mnmum Desgn Speed: Rulng desgn speed may be reduced to 40 km/hr from 50 km/hr n plan and 35 km/hr n rollng terran. Ths speed s to be followed n lnk roads less than 10km length wthout any further relaxaton. Rulng speed of 25 km/hr and mnmum speed of 10 km/hr shall be followed for all the newly algned roads n hlly areas. The mnmum speed may however be relaxed on case to case bass n case of exstng algnment where t may not be possble to realgn the roads as t may nvolve excessve cuttng or fllng Road Land Wdth: If larger wdths are avalable the exstng standards of IRC:SP-20:2002 should be followed. The mnmum standard road land wdth may be reduced to 12 m n plans n areas 1-2

3 where t s dffcult to obtan 15 m, keepng local condtons n vew and after assgnng reasons of keepng reduced wdth. The requrement may be further reduced to 9 m n areas under ntensve rrgaton and where traffc s less than 100 vehcles/day. But n such cases, the roadway wdth shall also be reduced to 6 m.. Normally a land wdth of 12m shall be attempted n case of hll roads. It may be reduced to 9m only n exceptonal cases Roadway Wdth Formaton wdth: The mnmum of 7.5 m of roadway may be reduced to 6 m ncase of hlly terran 1 and short lnk vllage roads connectng sngle habtatons. Ths would result n reducng the need of larger road land wdth and reduce quantty of sol requred for embankments. A mnmum of 9 m of formaton / roadway wdth shall be adopted for cuttng secton n deserts areas to avod roadblocks normally caused by dune sand accumulaton where reduced wdth s provded. Algnment selecton crtera n hll roads The road should cross the rdges at ther lowest elevaton. Relatve economcs are to be worked out before decdng upon the algnment. Harpn bends are to be kept to a mnmum. If unavodable the algnment should be such that a flat hll slope s obtaned for ts locaton. Unstable hll slopes to be avoded, as such slopes are prone to landsldes and are subject to seepage or flow from streams. Avod encroachng on wetlands or water bodes. Provde adequate cross-dranage structures to ensure that natural dranage patterns are not altered Carrageway Wdth: Standard carrageway wdth of 3.75 m s to be adopted on all roads. It may be however be reduced to 3.0 m n Low embankment heght reduces exceptonal cases such as hlly terran or as Quantty of earth work per provsons of IRC: SP-20: Hard Redevelopment costs of borrow areas shoulders of 1 m wdth may be provded on Dune sand accumulaton n desert areas and ether sde only n case longer routes or Requrement of land for constructon of road through vllage roads connectng many habtatons to cater for the expected ncrease n traffc ntensty Embankment heght: Lower embankment heght of m to be provded n case of ard and sandy areas. In case of desert areas, the embankment heght could be reduced snce no overtoppng s antcpated. In flood prone areas, heght of embankment shall not be reduced and shall be a mnmum of 0.6m above expected hghest water level. Based on data of last fve years Geometrcs: In plan and rollng terran the algnment should be desgned for maxmum possble radus of curves. Mnmum absolute curve radus of 40 km/hr and 35 km/hr should be adopted wthout further relaxaton due to safety reasons. Juncton desgn of access road wth collector road should be n conformty wth IRC: SP-20: 2002 for both sght dstance and flarng requrements. Generally a mnmum radus of 14m shall be provde n case of desgn of hll roads but n exceptonal cases t may be reduced to 12m to reduce excessve cost Dranage: For large catchment areas wth low ground slopes, the accumulaton of water causes floodng on the up-stream of the road. The ncreased velocty of water passng through the culverts causes scour on the down-stream and alters natural ground levels and scour of land. Hydrologcal studes are to be conducted n large catchment areas to lmt the afflux and provde adequate waterway for cross-dranage structures. Algn Road Away from Dranage Channels Provde Adequate Openngs 1 In the stretches where oblgatory to obtan a road land wdth of only 6m due to reasons of land avalablty, mnmum roadway wdth of 5.2m shall be provded for the roads under frst year projects. 1-3

4 1.3.9 Bult up areas: It should be ensured that the road level n bult up areas s lower than the plnth of the adjonng houses and drans are provded to dran the storm water OVERALL WIDTH BETWEEN CONTROL LINES OVERALL WIDTH BETWEEN CONTROL LINES SETBACK DISTANCE ROAD LAND WIDTH SETBACK DISTANCE ROADWAY CARRIAGEWAY CONTROL LINE BUILDING LINE ROAD LANE BOUNDARY Road Land Buondary, Buldng Lnes and Control Lnes ROAD LANE BOUNDARY BUILDING LINE CONTROL LINE Typcal Cross sectons of PMGSY roads 1-4

5 Enhancements:. Cattle crossngs to be provded at normal crossng routes for safety of both cattle and road user.. Ramps for access to and from agrculture lands for cross traffc are to be provded to avod damage to embankment and roadsde dran.. At all CD works shall have steps constructed for nspecton, repar and mantenance purpose. v. Shoulders should be paved at destnaton/roadsde vllages and provde bus bays to avod traffc obstructon and to provde for turnng radus wherever feasble. v. Where possble, the embankment should be wdened to provde a platform for stackng materal for mantenance and to ensure that the shoulders are kept free for movement of traffc. v. Where ever requred 300mm ducts should be provded to enable cultvators to thread agrcultural ppes for rrgatng ther felds lyng on ether sde of the proposed road. The nvert level of such ducts shall be about 300mm above hgh flood level. v. On hll roads, passng places are requred to facltate crossng of vehcles. These shall be provded at a rate of at least two per klometer and exact locaton to be based on sght condton. The length of passng places shall be about 15-20m wth carrageway of 5m. Ramp for Lateral Traffc/ Cattle crossng Wdenng of Shoulders for Storng Mantenance Materals Communty Concerns: Communty concerns, expressed durng consultatons are to be addressed to the extent possble n the desgn of the road. The concerns need to be documented and checked for addressal. In case any of the measures are not ncorporated, the same needs to be ntmated to the communty wth adequate explanaton after desgn fnalsaton Road Sgnages: Adequate nformatory, cautonary and warnng road sgns should be provded to ensure traffc safety, especally n the event of adopton of lower standards. The sgnboards should be placed such that they do not block the lne of sght. 1.4 Envronmental consderatons Envronmental consderatons for varous actvtes and sub-actvtes n the project are presented n the Table 1-4. Measures for the same are to be ncorporated n the project preparaton stage to offset envronmental mpacts n the subsequent stages Table 1-3. The measures shall be n conformance wth the ECoP referred aganst the actvtes. 1-5

6 1.4.2 Corrdors prortzed as per the core network shall be subjected to screenng 2 as per the screenng checklst Annexure 1-1. The roads so screened as per the checklst shall be subjected to greater analyss n the DPR for the ssue/s due to whch t s screened Envronmental concerns of the communty shall be ncorporated to the extent possble n the project preparaton and n the subsequent stages of the project. Ths s acheved through varous consultaton tools by PIU or Contractor as per the Table 1-1. Key envronmental concerns to be mtgated Land, ncludng loss of productve topsol Dranage Land use and lvelhood Vegetaton, cuttng of trees Forests, wld lfe, fsheres and aquatc habtat Water bodes and water qualty Slope stablty Wetlands Structures and Common property resources Dsposal of excess materal from cut sectons Sl.No Stage/Actvtes Project Prortsaton Dssemnaton of Core network 2 Project Preparaton Dssemnaton of project nformaton Fnalsaton of Algnment Formal Consultatons wth PAPs Formal Consultaton wth Flood Control/ Irrgaton Department Implementaton Stage Consultatons for temporary use of land Consultatons for extracton of water Consultatons for relocaton Consultaton for tree plantaton Consultaton for avodng nduced development Table 1-1: Consultatons to be conducted n varous stages of the project Responsble Agences PIU PIU PIU PIU Stakeholders Communty / PRI Communty Communty / PRI Communty Tools & Technques Dsplay of lst of vllages and length of corrdor maps at gram panchayat Dstrbuton of Project Informaton Brochure Transect Walk Focus group dscussons, publc meetngs PIU PRI/PIU Focus dscusson Contractor Contractor PIU PIU PIU Communty / land owner Communty / Well owner Communty / PRI Communty / PRI Communty / PRI Indvdual consultatons Indvdual consultaton Consultaton Consultaton Consultaton Desred Outputs Increasng awareness of communty about PMGSY Transparency n selecton of roads Senstsaton of communtes Increasng awareness of communty about roles and responsbltes Inventory of envronmental features, dentfcaton of stes for voluntary donaton, dentfcaton of PAPs Dssemnate nformaton on envronmental concerns ncorporated/not ncorporated nto desgn Informaton about the Flood Prone areas Seekng consent on temporary use of land and settng terms of use Seekng consent on extracton of water Area for relocaton of utltes and cultural propertes Identfcaton of persons for tree plantaton Locaton for plantaton Senstsng PRI on effects of Induced development Identfcaton of locatons for avodng/promotng nduced development on communty land Reference Resettlement Framework Resettlement Framework ECoP-1 Annexure 20-2 ECoP 1A ECoP-3.0 ECoP-5.0 ECoP-6.0 ECoP-10.0 ECoP-13.0 ECoP-14.0 ECoP-8.0 ECoP-2.0 ECoP-15.0 ECoP-16.0 ECoP Screenng of the corrdor would not be a deterrent towards ts selecton for mplementaton. The screenng process s ntended to facltate dentfcaton of scope for analyss n the DPR stage. 1-6

7 1.4.4 Towards mplementaton of the envronmental provsons by the contractor as per the ECoPs, he shall nomnate one of hs senor personnel to ensure that the constructon practces comply wth the ECoPs. 1.5 Complance to legal requrements The clearance requrements as per the varous legslatons n force towards the conservaton of the envronment durng the varous project stages, as applcable to the project are presented n Table 1-2. Project Stage Preconstru cton Constr uc-ton Actvty requrng clearance Road Projects n Hlly areas & Forests Dverson of Forest Land Algnment through Senstve Areas Algnment through Flood prone areas Table 1-2: Envronmental Clearance Requrements - PMGSY State s U K B A M Agency from whom clearance to be sought State Forest offce/ state polluton control Board Legslatve requrement Envronmental Clearance by forest departments for rural roads f the algnment traverses forest areas State forest department Forest Conservaton Act 1980 PIU Forest department, Water for Constructon Flood Control/ Irrgaton Department GWB, Irrgaton department/ Vllage councls Wld Lfe Department/ Forest Department Transfer of Land Forest Conservaton Act 1980, Forest Conservaton Rule 1980 Irrgaton Acts of the states eg Bhar Irrgaton Act 1997 & The Bhar Irrgaton, Flood Management & Dranage Rules 2003 Control on Settng up of Tube Wells Responsblty PIU PIU PIU Contractor Wld Lfe Wld lfe Protecton Acts f algnment PIU Protecton passes through protected areas Quarry Area Plan Mnng Department Mnng Act of the state Contractor Settng up and O&M of Hot Mx Plants State Polluton Control Board Ar Preventon and Control of Polluton Act 1981 Muncpal Sold Waste Management Rules, 2000 & Hazardous waste management & handlng rules, 2000 Contractor Nose from State Polluton Control constructon Board Envronment Protecton Rules 1986 Contractor Indan Explosves Blastng operaton Mnng Department Indan Explosve Rules 1983 Contractor Operaton of Road Transport Offce, Motor Vehcles Act, Emsson norms equpment and Polluton Control Board and standards machnery Contractor Labour laws Department of Labour Mnmum Wages Act/ Other labour laws Contractor Quarry materals extracton area Mnng department Mnng act, Contractor Legend:U = Uttarakhand, K = J & k,, B = Bhar AJ =Arunachal Praddesh, M=Mzoram The bd document shall nclude the varous applcable clearances pertanng to envronmental management and shall contan the necessary procedures for complance of the same The ste for constructon shall be handed over to the contractor, free from encumbrances and encroachments. Forest clearances, f requred shall be obtaned pror to start of the project and utltes shall be relocated before handng over the ste. 1-7

8 1.6 Integratng Envronmental Provsons n bd documents The desgn and envronmental consderatons dscussed above have to be ncorporated sutably n the DPR and the bd document to ensure mplementaton. Towards ths end, the followng Constructon schedulng factors to steps should be taken by the PIU: consder Detaled Drawngs f any for the envronmental provsons as per the envronmental codes of practce, as requred, are to be ncluded n the DPR vz., ECoP-1.0 Project Plannng & Desgn Wdenng of carrageway for bus stops and busbays, wdenng at junctons, ECoP-3.0, Constructon Camp, ECoP-11.0, Water bodes and ECoP-15.0, Cultural Propertes.. The drawngs are to nclude specfcatons of the materals used and also the detaled bll of quanttes n the bd document Cost mplcatons of envronmental measures suggested by the envronmental codes of practce have to be ncluded n the estmates for the project but the state government are expected to make land avalable free of all encumbrance. Cost of restoraton of common property resources, as detaled n socal management plan, are expected to be met by the state government Montorng arrangements towards the mplementaton of the envronmental provsons are to be specfed. The reportng formats are provded as per the ECoP-18.0, Envronment Audt As per clause 26 of the Standard Bddng Document of MoRD, the contractor s expected to submt for approval of the engneer, the general methods, arrangements, orders and tmng for all the actvtes n the works along wth monthly cash Overall schedulng to ncorporate clmatc factors, snow fall, harsh weather condtons Agrcultural practces and harvestng seasons Tmng of specfc actvtes to avod specal weather condtons Events of mportance n the project area as festve seasons etc Avalablty of local labour durng harvest seasons Tmng of actvtes-factors to consder If there s a tme lag more than a fortnght between WBM and black-toppng, the surface needs to be sutably blnded and may have to be rerolled as per the nstructons of the Engneer of the PIU. The tme lag between the prme coat and the fnal black-toppng shall be mnmum and n any event be not more than 3 days. Sealed coat shall mmedately follow the 20mm carpet on the same day. flow. In schedulng the constructon works, t s expected that the contractor consders all the rsks and schedule the actvtes, whch are lkely to be mpacted by weather phenomenon n a perod n whch these phenomenon are unlkely to occur. Ths would also need revew and fnal approval of the engneer. In vew of the above approval, the mlestones ndcated at Para 19 of Standards Bddng Document-Contract Data to General Condtons of Contract, to be acheved durng the contract perod may be sutably amended The envronmental concerns to be addressed n the preparaton of DPR are detaled out n the Table 1-3 and Table

9 Wdenng of Carrageway at Destnaton Rased Shoulder for Passengers Dsembarkng 25 5m 15 Dran Wdenng of Carrageway for Turnng Radus at the Stops Wdenng for Bus-Bays on Routes 1-9

10 Carrage-Way 20 Sght Lne 25 Wdenng Extra Wdenng of Carrage-way of Carrage-way at at Junctons for for achevng adequate adequate Turnng Rad Turnng 15 meters Rad mnmum 15Meters mn. Toe Lne T Juncton for Wdenng of CW, Provdes Turnng Radus and Merges wth Man Lane of sngle lane 1-10

11 S.No. 1.0 Transact Walk 2.0 Detaled Surveys Table 1-3: Envronmental concerns n DPR preparaton Actvty Items to consder Measures to address Identfcaton of materal sources Assessment of envronmental mpacts Precautonary measures durng constructon to avod envronmental mpacts Trees Forests Dranage lnes / Rvers / water crossngs Flood prone areas f any Irrgaton water courses Water bodes Grazng lands Cultural propertes Utltes Communty facltes Major junctons Seasonal markets or cultural congregatons Locaton for Ramps, Cattle Crossng and Bus Bay Locaton for stackng mantenance materal Locaton of areas for dsposal of debrs Locaton for ducts for threadng agrcultural ppes Geologcal, geotechncal studes n hll areas Assessment of angle of hll slopes Topographcal surveys Hydrologcal surveys n flood prone areas Borrow materal Quarry materal Water avalablty Clmatc factors Water bodes Stablty of slopes Inventorsaton of envronmental features Avodance, desgn modfcatons to mnmze adverse envronmental mpacts Incorporatng communty concerns nto fnalzng algnment Stablty analyss and measures to address slope nstablty n hll slopes and hgh banks Workng out requrement of cut and fll 1-11 Detaled n ECoP 1.0/ 1.0A ECoP 1.0 Identfcaton of flood prone areas and measures to avod hgh afflux Identfcaton of agrcultural use of land Utlzng alternatve materals ECoP 4.0 Mnmze requrements through desgn modfcatons Locaton crtera ECoP 5.0 Utlzng alternatve materals ECoP 4.0 Materal extracton from exstng quarres ECoP 7.0 Identfcaton of perennal/communty/prvate sources Schedulng constructon to sut water avalablty ECoP 8.0 Utlzng communty water sources wthout conflct of uses Schedulng constructon consderng the specal weather phenomena ECoP 1.0 Provson of slt fencng ECoP 11.0 Rehabltaton of water bodes ECoP 20.0 Measures for slope stablzaton ncludng bo-engneerng ECoP 9.0/ practces /9.0A Sol eroson Eroson control measures ECoP 9.0 Land use control measures adjacent to the road Land use changes Empowerng Gram Panchayat / Road Authorty to regulate development along road sde ECoP 17.0 Avodance from settng up constructon camps, borrow areas ECoP 3.0, Agrculture lands ECoP 5.0 Conservaton of top sol ECoP 6.0 Ste restoraton after constructon Cultural propertes Avodance through desgn modfcatons Plannng for Relocaton & rehabltaton ECoP 15.0 Common Property Resources Avodance through desgn modfcaton Plannng for Relocaton of consultaton wth communty ECoP 1.0 Dranage Provson of adequate number of CD Structures ECoP 12.0 Trees Compensatory plantaton & arrangements for roadsde plantaton ECoP 16.0 ECoP 16.0 Avodance through desgn modfcatons Forest areas ECoP 19.0 Envronment Management measures durng constructon ECoP 13.0 Natural Habtats/ Bo-dversty Avodance through desgn modfcaton or formulatng ECoP 19.0 addtonal measures for avodng mpacts / 19.0A/ Top sol Stockple topsol and preservaton ECoP 6.0 Provson of polluton control measures ECoP 13.0 Constructon stes All measures to ensure publc & worker s health/safety ECoP 14.0 Water Management ECoP 10.0 Crtera for dentfcaton of stes and Infrastructure ECoP 3.0 arrangements Constructon camps Safe dsposal of all wastes ECoP 10.0 Enforcement of polluton control measures ECoP 13.0 Borrow areas Arrangements wth land owners to nclude redevelopment ECoP 5.0 Quarry areas Rehabltaton of quarry areas f new quarres are opened ECoP 7.0 Publc/workers health & safety Personal Protectve Equpment to be provded Publc safety at constructon stes to be undertaken ECoP 14.0 Measures for worker s health & hygene at constructon camps ECoP 3.0

12 S.No Actvty Items to consder Measures to address Detaled n Land for borrowng Agreement to nclude borrow area rehabltaton ECoP 5.0 Water for constructon Agreements wth owners/communty for utlzng water ECoP 8.0 Ste for constructon camps Rehabltaton of the land after constructon ECoP 3.0 Removal of trees Tree Plantaton as per Roadsde Plantaton plan ECoP 16.0 Consultatons wth Avodance through modfcaton of algnment ECoP 15.0 communty Cultural propertes Relocaton costs to be covered n the project, f needs relocaton ECoP 15.0 ECoP 20.0 Common property resources Avodance through modfcaton of algnment ECoP 2.0 Relocaton, f needed n consultaton wth communty ECoP 2.0 Traffc durng constructon Provson of alternate routes or pror notce to the users ECoP 14.0 Concerns of communty Communty concerns to be ncorporated ECoP 1.0 Impacts dentfed are to be mtgated by ncorporaton of Fnalzaton of Envronmental mpacts dentfed All ECoPs provsons as per ECoPs algnment Impacts that can be mtgated through desgn modfcatons Desgn aspects ECoP 1.0 should be ncorporated Preparaton of Desgns for enhancements and mtgaton measures ncludng All concerns/mpacts dentfed detaled drawngs cost provsons All ECoPs Montorng of Progress All envronmental aspects dentfed Montorng mplementaton of Envronmental measures ECoP 18.0 Table 1-4: Envronmental Concerns durng project mplementaton to be dentfed n DPR Sl.No. Actvty and Sub Actvty Impact/s Measure/s ECoP Applcable A Pre Constructon Actvtes A1.0 Algnment markng -Nl- ECoP 1.0 Co-ordnaton wth Revenue Department ECoP 2.0 A2.0 Relocaton of utltes Impact on current usage Identfcaton of relocaton ste n advance ECoP 2.0 Schedulng the actvty n consonance wth the communty usage pattern ECoP 2.0 A3.0 Tree Fellng Complance wth Forest Act n case trees are Pror clearance from Forest Department on forest land ECoP 1.0 Loss of canopy Tree plantaton as per roadsde plantaton plan ECoP 16.0 A4.0 Clearance of land Affect on lvelhood As per project provsons ECoP 2.0 Affect on standng crops Schedulng of actvty and coordnaton ECoP 1.0 Affect on cultural propertes Modfcaton of algnment or Relocaton of the cultural propertes ECoP 15.0 Affect on natural habtats Avodance of natural habtats or preparaton of Natural Habtat vmanagement Plan ECoP 19.0 A5.0 Dverson of forest land Complance wth Forest Act Actvty schedulng to avod delays, conformance to legal requrements ECoP 1.0 Affect on flora Precautonary measures durng constructon n forest areas All ECoPs Polluton from constructon actvtes Precautons whle operatng equpment/machnery ECoP 13.0 A6.0 Transfer of land ownershp Grevances from communty ECoP 1.0 Addressal through Grevance Redressal Mechansms & Consultatons ECoP 20.0 Affect on lvelhood Provson of enttlements as per resettlement framework ECoP 1.0 A7.0 Locaton of Storage Yards, labour camps, and constructon stes Polluton from constructon camps, storage yards & labour camps Locaton crtera to be adopted ECoP 3.0 ECoP

13 Sl.No. Actvty and Sub Actvty Impact/s Measure/s ECoP Applcable Obtan clearances from SPCB ECoP 1.0 Pressure on local nfrastructure Infrastructure arrangements to be as per gudelnes ECoP 3.0 A8.0 Procurement of equpments Machnery lkely to cause polluton at Machnery to be procured shall be n conformance wth nose and ECoP 13.0 and machnery settlements and natural habtats emsson standards of CPCB ECoP 19.0 Safety concerns n machnery operaton Safety equpment for workers ECoP 14.0 A9.0 Identfcaton and Selecton Consultatons and arrangements at contractor-ndvdual levels, ECoP 8.0 Conflct of uses n case of water of Materal Sources documentaton of agreement ECoP 20.0 Borrowng causes depressed lands Consultatons and arrangements at contractor-ndvdual levels, documentaton of agreement ECoP 5.0 Polluton due to materal extracton from ECoP 5.0 borrow and quarry areas to surroundng Precautonary measures durng stng of borrow areas and quarry areas ECoP 7.0 envronment Dsturbance to Natural Habtats vavodance of locaton of materal sources n Natural Habtats ECoP 19.0 A10.0 Identfcaton of desgnated locatons of waste dsposal Polluton due to locaton close to settlements, water bodes & other senstve areas Ste selecton n conformance to crtera provded ECoP 10.0 A 11.0 Informaton to communty Keepng local communty nformed about the constructon schedule ECoP. 2.0 B Constructon Actvtes B1.0 Ste Clearance B1.1 Clearng and Grubbng Effect on roadsde vegetaton B1.2 B2.0 Dsmantlng of exstng culverts and structures, f any Plannng Traffc dversons and Detours B3.0 Materal Procurement Loss of topsol B4.0 Transport of materals to ste B5.0 Materals handlng at ste B5.1 Storage of materals Debrs generaton creatng unsghtly condtons Generaton of Debrs creatng unsghtly condtons Floodng due to ntercepton to dranage paths Tramplng of vegetaton along traffc dversons Formaton of stagnant water pools due to borrowng/quarryng Illegal quarryng / sand mnng Uncontrolled blastng at quarres Fugtve emssons from transport trucks Dust emssons from haul roads Contamnaton to water sources, leachng nto ground water ECoP 2.0 Restrctng movement of machnery/equpment over adjacent felds ECoP 13.0 Dsposal / storage of grubbng waste and possble reuse ECoP 10.0 Dsposal of waste and lkely reuse ECoP 10.0 Provson of dverson channels and/or schedulng constructon of ECoP 12.0 culverts preferably n dry months Actvty schedulng, dentfcaton of alternatve track ECoP 14.0 Strppng & Storng topsol ECoP 6.0 ECoP 5.0 Restoraton plan for borrow areas & quarry areas new quarry ECoP 7.0 Conformance of quarres selected to the SPCB requrements, ECoP 7.0 ncludng quarry rehabltaton plans Controlled blastng to the extent requred. Conformance to blastng ECoP 7.0 vrules as per the Indan Explosves Act Coverng of materal wth tarpauln or use of covered box trucks ECoP 10.0 durng transport Haul road management ECoP 13.0 Provson of mpervous base to storage areas ECoP

14 Sl.No. Actvty and Sub Actvty Impact/s Measure/s ECoP Applcable B5.2 Handlng of earth Dust rsng and ncrease n partculate Use of dust suppressants concentraton n ambent ar ECoP 13.0 B5.3 Handlng of fly ash Increase of partculate concentraton and Use of dust suppressants contamnaton of nearby areas ECoP 4.0 B5.4 Handlng of granular materal Rsk of njury to workers Use of Personal Protectve Equpment v ECoP 14.0 B5.5 Handlng of btumnous Leachng of materals, contamnaton of vprovson of mpervous base at btumen storage areas materals water sources ECoP 10.0 Ar polluton v Control of emssons from mxng ECoP 13.0 B5.6 Handlng of ol/desel Contamnaton from accdental splls v Preventon of accdental splls, affectng cleanng mmedately after spll ECoP 13.0 Polluton due to ncomplete burnng v Ensure complete combuston of fuel through regular mantenance of equpment ECoP 13.0 B5.7 Waste management Ltterng of debrs at constructon ste Waste to be dsposed at dsposal locatons only/ utlzed n pavement as xcappng layer/ n sub-base or base course ECoP 10.0 Contamnaton of surroundngs due to xpreventon of runoff from enterng water bodes runoff from constructon ste ECoP 11.0 B5.8 Operaton of constructon equpments and machnery Ar & Nose polluton Operatonal safety of workers B5.9 Movement of Machnery Tramplng of vegetaton Damage to flora & natural habtats x Conformance to Emsson standards and norms ECoP 13.0 xconformance to Safety concerns of the road users and workers n operaton, frst ad provson and mandatory provson of Personal ECoP 14.0 Protectve Equpment x Restrcton of movement wthn ROW ECoP 13.0 x ECoP 13.0 Mnmzng mpact on vegetaton ECoP 19.0 v Damage to road sde propertes xmnmzng mpacts on prvate and common propertes, ncludng ECoP 13.0 vrelgous structures ECoP 15.0 B6.0 Earthworks B6.1 Cuttng Uncontrolled blastng n case of rock cuttng Controlled blastng to be made mandatory ECoP 7.0 Loss of topsol Preservaton of topsol for reuse ECoP 6.0 Waste generaton Safe dsposal of waste & possble reuse ECoP 10.0 B6.2 Embankment constructon Interrupton to dranage Dranage channels to be provded wth culverts n advance to embankment constructon as far as possble ECoP 12.0 Dust Rsng Dust suppresson wth water ECoP

15 Sl.No. Actvty and Sub Actvty Impact/s Measure/s ECoP Applcable Excess water/materal usage Mnmsng heght of embankment ECoP 1.0 Schedulng embankment constructon preferably n wet months, f vpossble ECoP 1.0 vcompacton wth vbratory rollers s suggested ECoP 1.0 Eroson causng mpact on vslope stablzaton measures as seedng, mulchng & bo-engneerng embankment/slope stablty technques ECoP 9.0 Formaton of rlls / gulles vconstructon of temporary eroson control structures as per requrements ECoP 9.0 v Contamnaton of water bodes/ water Control measures as slt fencng, vegetatve barrers etc courses ECoP 9.0 v Avodng dsposal of lqud wastes nto natural water courses ECoP 11.0 B6.3 Mantenance at constructon Collecton of ranwater n constructon Temporary drans durng constructon camp camps x ECoP 3.0 Waste water from labour camps xdsposal of waste water nto soak pts ECoP 3.0 Contamnaton of sol x Removal of ol / other chemcal splls & wastes ECoP 3.0 B6.4 x Cuttng embankments of Impact on the dranage flows n and out of Restoraton of dranage channels surface water bodes the water body ECoP 11.0 x Embankment stablty Desgn of slopes of the water bodes, slope protecton etc ECoP 9.0 B7.0 Sub-Base & Base courses B7.1 Granular sub-base Extensve extracton of quarry materals Use of locally avalable materals lcensed quarry Use of cut ECoP 4.0/ materal ECoP 10.0 B7.2 Wet mx macadam Extensve water requrement Schedulng the actvty preferably n wet months ECoP 1.0 Avodng conflct of uses due to water extracton from constructon ECoP 8.0 B7.3 Shoulders treatment Movement of Machnery for compacton Restrctng movement on adjacent lands v ECoP 13.0 Slope Protecton Slope stablty Bo-engneerng practces ECoP 9.0A B8.0 Culverts and Mnor Brdge Interrupton to water flow Provson of dverson channels Works ECoP 12.0 Polluton of water channels durng Control of sedment runoff constructon ECoP 12.0 Safety of Workers Mandatory use of Personal Protectve Equpment ECoP

16 B13.0 C C1.0 Montorng envronmental condtons Post Constructon Actvtes Clearng of constructon camps C1.1 Campste restoraton Change of land use due to settng up of constructon camp C1.2 Dsmantlng of campste Waste generaton at the constructon ste C2.0 C3.0 Clearng of Water Channels, Generaton of debrs & slt sde drans and culverts Rehabltaton of borrow areas Sl.No. Actvty and Sub Actvty Impact/s Measure/s ECoP Applcable B9.0 Surfacng B9.1 Btumnous surface Worker s safety durng handlng of hot mx Mandatory use of Personal Protectve Equpment ECoP 14.0 Damage to vegetaton burnng/ cuttng Avodng use of wood as fuel for heatng btumen as far as possble ECoP 13.0 Hot mx plant locaton to be preferably on waste lands ECoP 13.0 Contamnaton due to btumnous wastes Reuse or Land fllng of btumnous wastes or use n sub-base v ECoP 10.0 Impacts on Ar qualty Ensurng complance of hotmx plants wth the CPCB emsson v standards ECoP 13.0 B9.2 Concrete surfacng for roads Contamnaton of surroundngs due to vmxng concrete at desgnated locatons away from habtaton and crossng bult up areas concrete mxng agrculture lands ECoP 3.0 B10.0 Road furnture/sgnage -Nl- To be provded as per desgn B11.0 Shoulder protecton Requres materal extracton from quarres Use locally avalable materal lcensed quarry ECoP 4.0 Ensure that all shoulders are clear of debrs or constructon materals ECoP 13.0 B12.0 Enhancements -Nl- ECoP 1.0 To be ncluded n DPR ECoP Nl- -Nl- C4.0 Clearng of encroachments Loss of lvelhood C 5.0 Mantenance of vegetaton Loss of green cover To be as per the codes of envronmental practce ECoP 18.0 Campste to be restored to ts orgnal condton as per the ECoP 3.0 rehabltaton plan Restoraton of top sol ECoP 6.0 Dsposal of waste at desgnated locatons ECoP 10.0 ECoP 11.0 Removal of Debrs and dsposal ECoP 12.0 Top sol restoraton, revegetaton ECoP 5.0 Precautonary measures to avod encroachments ECoP 17.0 To ensure that there s no gap of tme after handng over and proper mantenance of plants and other vegetaton ECoP 16.0/ ECop 9.0A 1-16

17 ECoP 1A- Roads n Flood Prone Areas 1A.1 General The code of practce detals the factors to be consdered whle plannng, desgnng and mplementng roads n permanently nundated or flood prone areas. 1A.2 Project Preparaton and Desgn The areas subjected to floodng and submergence shall be dentfed n each dstrct and marked on the dstrct revenue plans. These shall be based on nformaton obtaned from Department of Flood Control and/ or Dsaster Management Cell at the Dstrct Commssoners offce. Maps of flood prone areas, n form of Satellte mageres, are normally avalable wth the Dstrct Management Cell of Dsaster Management Cell of the Dstrct Commssoners offce. Other nformaton related to depth, frequency and ntensty of floods etc s normally avalable wth the Flood Control/ rrgaton Department. The maps shall also ndcate whether the area gets flooded due to precptaton n the local areas or due to breach of any dyke. The nformaton collected should be cross checked wth the communty durng consultaton 1A.2.2 Apart from the nformaton from flood control department and flood control maps, nformaton on the duraton of flood, velocty of flood waters and the sol types n these areas shall be obtaned by contacts wth local resdents/ vllages. The nformaton shall form the background of map ndcatng the area as classfed n Clause 1A.2.4. It needs also to be ascertaned whether approach road only gets nundated or the habtaton also gets submerged. The depth of submergence should also be recorded to help fnalzng the level of top of pavement. 1A.2..3 The Executve Engneer of the respectve dstrct or hs apponted representatve not below the rank of Assstant Engneer, where-n rural road nterventon are conceved, shall coordnate wth the Dstrct Management Cell and Flood Control Department for dentfcaton of flood prone areas. 1A.2.4 For the purpose of ths nterventon, the area under each dstrct shall be dentfed as area not affected by flood and flood prone area. The flood prone area shall be further classfed as the areas nundated by breach of dykes, areas subjected to floodng due to ranfall and areas where habtaton and approach roads get submerged 1A.2.5 As far as possble, the approach roads should be algned n the areas not affected by the floods and areas subjected to nundaton due to breach of dykes shall be avoded even f t results n a slghtly longer length. Management measures n case of areas nundated due to breach of dykes wll be based on the Dsaster Management Plan prepared for the dstrct. Algnment fnalzaton and desgn of roads beng planned n areas subjected to floodng due to rans shall consder the measures suggested n ths ECoP. 1A.2.6 Where possble the algnment n flood prone areas shall be algned to be on hgher ground contours/levels. 1A.2.7 The top of the embankment shall be desgned to be a mnmum of 0.6m HFL, based on data of last fve years. excludng pavement. Ths may ncrease cost on earthwork for embankments. If necessary the embankment wdth may be reduced to 6m to reduce the quantty of earth work 1A.2.8 The pavement shall be adequately protected and kept dry wth a dranage layer, of at least 150mm.lad above HFL. Desgn of the pavement shall be on the bass of equlbrum mosture content. CBR n soaked condton 1-17

18 1A.2.9 The embankment, at places where there are chances of water erodng, the slopes and banks shall be protected wth: Proper turf wth grass sods on sde slopes wth extenson upto 30cm outsde the toe lne and 30cm on the shoulders, or By provdng lnng at the toe walls along the toe lne upto about 30cm above the flood lne. The toe wall can be of rubble stones of brck on edge. Rest of the slope shall be covered wth turf. The storm water from the road surface shall be draned wth proper chutes or cascades and provdng kerb stones f necessary. 1A.2.10 Adequate openng are to be provded to dran the flood water from the nundated areas and to act as balance culverts. The provson of ECoP -12, Dranage shall be followed where approprate. 1A.2.11 Cement concrete pavement or CC block pavement may be adopted n sectons of the roads lkely to reman under submergence and n porton of the road passng through the habtatons. 1A.3 Pre-Constructon Stage. 1A.3.1 The constructon camps and materal storage yards wll be located away from the areas lkely to be flooded. They shall preferably be sted on rased land and away from the streams These areas shall be provded wth adequate dranage No borrowng or temporary usage of land and resources shall be undertaken n flood prone areas Waste deposal stes shall be located away from the flood prone areas. No waste shall be dsposed off n low lyng areas that are lkely to be nundated and drans nto nearby water bodes The waste dsposal stes shall be dentfed at the tme of project preparaton. 1A.4 Constructon stage 1A.4.1 Debrs generated from the clearance operatons shall be deposted only at pre-dentfed waste dsposal locatons Constructon shall be scheduled such that the constructon of cross-dranage structures and toe walls s prortzed to enable clearng of water nundated causng least damage to the embankment/earthworks. 1A.4.3 Locaton of traffc dversons shall be motor able and wll be suffcently hgh to avod submergence n case of floods Safety devces and flood warnng sgns to be erected whle workng over streams and canals. 1A.5 Post-Constructon and Operaton Stage 1A.5.1Roads n flood prone areas shall be under constant supervson of the EE or hs apponted representatve not below the rank of AE. Any breach n embankment and/or damage to Cross-Dranage structure shall be mmedately rectfed. 1A.5.2 The contractor shall ensure that all constructon wastes lyng along the road and n flood prone areas are removed. Ths fact should be verfed before ssue of completon certfcate. 1-18

19 ECoP-2.0 Ste Preparaton 2.1 General The preparaton of ste for constructon nvolves: Markng and clearance of the requred RoW of all encroachments by the PIU pror to moblzaton of Contractor; Informng the local communty about constructon schedule and Ste preparaton by the contractor pror to commencement of constructon. Scope of ths ECoP ncludes only the measures to address envronmental concerns expected durng the ste preparaton. The land acquston and resettlement ssues nvolved are to be addressed by PIU as per the provsons of the Resettlement Framework for the project. 2.2 Ste Preparaton Actvtes by the PIU After obtanng the consent of the communty/ Gram Sabha on the algnment, the PIU shall be responsble to stake out the algnment. It shall be the responsblty of the PIU to take over the possesson of the proposed RoW and hand over the land wdth requred clear of all encumbrances to the Contractor who shall establsh bench marks on ground The addressal of socal and resettlement ssues shall be carred out by the PIU as per the provsons of the Resettlement Framework and the Screenng and Consultaton Framework. Actvtes pertanng to the clearance of land and relocaton of utltes need to be ntated by the PIU well n advance to by contact wth water supply, rrgaton electrcty and other concerned departments to avod any delays n handng over of ste to the Contractor. Assstance of the Revenue Department shall be sought n accomplshng the task. A MoU to ths effect would be sgned between the PIU and the Revenue Department Format presented as Annexure 2-1. Alternately the need for close cooperaton shall be covered by a government order. 2.3 Ste Preparaton Actvtes by the Contractor PIU s responsbltes before handng over ste Clearance of encroachments wthn proposed RoW Intaton of process for legal transfer of land ttle Algnment modfcaton or Relocaton of common property resources n consultaton wth the local communty Algnment modfcaton or Relocaton/removal of utltes n consultaton wth the varous government departments and Obtan clearances requred from government agences for Fellng trees and Dverson of stretches of forestlands etc. Informng the communty and local vllage councls about the lkely schedule of constructon The contractor shall submt the schedules and methods of operatons for varous tems durng the constructon operatons to the PIU for approval. The Contractor shall commence operatons at ste only after the approval of the schedules by the PIU. He shall also keep the communty/ vllage councl nformed about the lkely mle-stones of the achevement and causes of delays f any The actvtes to be undertaken by the contractor durng the clearng and grubbng of the ste are as follows: The clearance of ste shall nvolve the removal of all materals such as trees, bushes, shrubs, stumps, roots, grass, weeds, part of topsol and rubbsh. Towards ths end the Contractor shall adopt the followng measures: Lmtng the surface area of erodable earth materal exposed by clearng and grubbng Conservaton of top sol and stock plng as per the provsons of Deleted: 2-1

20 specfcatons or ECoP-6.0, Topsol Salvage, Storage and Replacement and Carry out necessary backfllng of pts resultng from uprootng of trees and stumps wth excavated or approved materals to the requred compacton conformng to the surroundng area To mnmze the adverse mpact on flora and vegetaton, only ground cover/shrubs that mpnge drectly on the permanent works shall be removed. Cuttng of trees and vegetaton outsde the workng area shall be avoded under all crcumstances. In case the algnment passes through forest areas, Forest Ranger shall be consulted for dentfcaton of presence of any rare/endangered speces wth n the proposed road way. Protecton of such speces f found shall be as per the drectons of the Forest Department The locatons for dsposal of grubbng waste shall be fnalzed pror to the start of the works on any partcular secton of the road. The selecton of the ste shall be approved by the PIU. The crtera for dsposal of wastes shall be n accordance wth ECoP-10.0, Waste management In locatons where eroson or sedmentaton s lkely to be a problem, clearng and grubbng operatons should be so scheduled and performed that gradng operatons and permanent eroson and sedmentaton control features can follow mmedately, f the project condtons permt Dsmantlng of CD structures and culverts shall be carred out n a manner as not to damage the remanng requred porton of structures and other surroundng propertes. The dsposal of wastes shall be n accordance wth the provsons of ECoP-10.0, Waste management. The followng precautons shall be adopted: The waste generated shall not be dsposed off n watercourses, to avod hndrance to the flow, and All necessary measures shall be taken whle workng close to cross dranage channels to prevent earthwork, stonework as well as the method of operaton from mpedng cross dranage at rvers, streams, water canals and exstng rrgaton and dranage systems The desgnated stes duly approved by Implementng Agency shall be cleared of ts exstng cover for settng up of the constructon stes, camps and related nfrastructure facltes, borrow areas and other locatons dentfed for temporary use durng constructon. The contractor shall comply wth all safety requrements n consderaton as specfed n ECoP-14.0, Publc & Worker s Health and Safety. Before ntaton of ste preparaton actvtes along these lands to be used temporarly durng constructon, t shall be the responsblty of the Contractor to submt and obtan approval of the ste restoraton plan from the mplementng agency. The letter/contract agreement between the owners of the land parcel for temporary usage shall nclude ste restoraton to ts orgnal status. The gudelnes for the same are furnshed n ECoP-13.0, Constructon Plants & Equpment Management ; ECoP-3.0, Constructon Camps ; and ECoP-5.0, Borrow areas Ste preparaton shall nvolve formaton of the road base wheren t s ready for constructon of protectve/dranage works, carrageway, shoulders, parapets and other road furnture. In hlly terran, trace cut are already undertaken by the PIU durng surveys for algnment markng and desgn preparaton. Implementng Agency shall transfer the land for cvl works to the Contractor. Peg markng of the algnment and settng out for the proposed roadwork shall be carred out by the contractor as per detaled drawngs and got checked by the supervsng engneers Use of blastng for rock cuttng shall be resorted to only f absolutely necessary. It need also to be ensured that the blastng operaton do not cause undue nstablty of exstng slopes or movement of rock mass. The BOQ shall provde for controlled blastng to prevent collapse of sde slopes and where fly-off of debrs are lkely to cause damage to other propertes. The communty shall be nformed n advance. Warnng sgns shall be dsplayed about the tmng of blastng operaton. Adequate care should be taken durng storage, transport and use of 2-2

21 explosves. The shot-frer s must be adequately traned and lcensed. Suggestons for supervson and observng safety durng blastng are detaled n Annexure 2-2. A note on Safety aspects n blastng has also been appended as Annexure n the MoRD Specfcatons for Rural Roads Clause 304 : Rock Cuttng All regulatory clearances shall be obtaned before actual start of work on any stretch of road. Some of the N-E states requre entry permts/ nner lne permts for non-resdents. The contractors shall seek complance of ths regulaton pror to moblzaton. 2-3

22 ECoP-3.0 Constructon Camps 3.1 General The terms and condtons of ths Code of Practce pertan to the stng, development, management and restoraton of constructon camps to avod or mtgate mpacts on the envronment. The area requrement for the constructon camp shall depend upon the sze of contract, number of labourers employed and the extent of machnery deployed. The key actvtes requrng addressal durng the project stages and the sgnfcance of mpacts n the project regons are presented n Table 3-1. Stages Pre-constructon Constructon Post-constructon Table 3-1: Sgnfcance of Impacts across Project Regons Key Actvtes Sgnfcance of Impacts Uttarakhand J & K Bhar Hlly areas Other areas Stng Development Mantenance Restoraton Impacts not lkely to be sgnfcant Impacts lkely to be sgnfcant Low hlls Hgh hlls Flood plans Other areas Hlls Arunachal Pradesh/ Mzoram Plateau 3.2 Pre-constructon stage The Contractor shall dentfy the ste for constructon camp n consultaton wth the ndvdual owners n case of prvate lands and the Gram Panchayat n case of Gram Sabha GS lands. The sutable stes shall be selected and fnalzed n consultaton wth the PIU. Locaton of constructon camps very close to habtatons may socal hazards and may have mpact on lfe style of local populaton The contractor wll work out arrangements for settng up hs facltes durng the duraton of constructon wth the land owner/gram Panchayat. The arrangements wll nclude the restoraton of the ste after the completon of constructon. The arrangements wll be verfed by the PIU /GS to enable redressal of grevances at a later stage of the project. Selecton of constructon camp/ste locatons Avod the followng Prefer the followng Lands close to habtatons nearer than 500m Irrgated agrcultural lands Lands belongng to small farmers Lands under vllage forests Lands wthn 100m of communty water bodes and water sources as rvers Lands wthn 100m of watercourses Low lyng lands Lands supportng dense vegetaton Grazng lands and lands wth tenure rghts Lands where there s no wllngness of the landowner to permt ts use 3-1 Waste lands Lands belongng to owners who look upon the temporary use as a source of ncome Communty lands or government land not used for benefcal purposes Prvate non-rrgated lands where the owner s wllng and Lands wth an exstng access road After fnalzaton of the ste, the contractor shall submt to the PIU a detaled layout plan for development of the constructon camp, ndcatng the varous structures to be constructed ncludng the temporary structures to be put up, dranage and other facltes. The plan wll nclude the redevelopment of stes to pre-constructon stage. The campste should cover an

23 area of about 3000 sq.m for 60 Nos of workers. A conceptual drawng of the constructon camp layout s presented as Annexure Accommodaton: The contractor shall provde, free of cost n the camp ste, temporary lvng accommodaton to all the workers Arrangements wth landowners employed by hm for such a perod as the The contractor shall submt to PIU the followng: constructon/mantenance work s n progress Towards the provson and storage of drnkng water at the constructon camp, the contractor shall ensure the followng provsons: The contractor shall provde for a suffcent supply of potable water n the constructon camps, n earthen pots. The contractor shall dentfy sutable communty water sources as handpumps and ponds for procurng drnkng water, n consultaton wth the Gram Sabha. Only n the event of non-avalablty of other sources of potable water, the Contractor shall obtan water from an unprotected source, after the testng for ts potablty. Where water has to be drawn from an exstng open well, the well shall be properly chlornated before water s drawn from t for drnkng. All such wells shall be entrely closed n and be provded wth dust proof trap door. Every water supply or storage shall be at a dstance of not less than 15m from any wastewater / sewage dran or other source of polluton. Water sources wthn 15m proxmty of tolet, dran or any source of polluton wll not be used as a source of drnkng water n the project. A pump shall be ftted to each covered well, the trap door shall be kept locked and opened only for cleanng or nspecton, whch shall be done at least once a month In every ste, adequate and sutable facltes for washng clothes and utensls shall be provded and mantaned for the use of contract labor employed theren. Separate and adequate bathng facltes shall be provded for the use of male and female workers. Such facltes shall be convenently accessble and shall be kept n clean and hygenc condtons Santary arrangements, latrnes and urnals shall be provded n every work place on the followng scale: Where female workers are employed, there shall be at least one latrne for every 25 females or part thereof. Where males are employed, there shall be at least one latrne for every 25 males or part thereof. Every latrne shall be under cover and so parttoned off as to secure prvacy, and shall have a proper door and fastenngs. Where workers of both sexes are employed, there shall be dsplayed outsde each block of latrne and urnal, a notce n the language understood by the majorty of the workers For Men Only or For Women Only as the case may be. The latrnes and urnals shall be adequately lghted and shall be mantaned n a clean santary condton at all tmes and Water shall be provded n or near the latrnes and urnals by storage n sutable contaners Arrangements for Waste Dsposal Dsposal of santary wastes and excreta shall be nto septc tanks. Ktchen wastes shall be dsposed nto soak pts. Wastewater from campstes wll be dscharged and dsposed n a ktchen sump located preferably at least 15 meters from any body of water. Sump capacty should be at least 1.3 tmes the maxmum volume of wastewater dscharged per day. The bottom of the pt should be flled wth coarse gravel and the sdes shored up wth board, etc. to prevent eroson and collapse of the pt. Sold wastes generated n the constructon ste shall be reused f recyclable or dsposed off n land fll stes Frst Ad Facltes Frst Ad Box wll be provded at every constructon campste and under the charge of a responsble person who shall always be readly avalable durng workng hours of the work place. He shall be adequately traned n admnsterng frst ad-treatment. Formal arrangement shall be prescrbed to carry njured person or person suddenly taken ll to the nearest hosptal. 3-2 Wrtten No-objecton certfcate of the owner/cultvator Extent of land requred and duraton of the agreement Photograph of the ste n orgnal condton Detals of ste redevelopment after completon

24 Storage Ste Storage of Petrol/Ol/Lubrcants: Brck on edge floorng or sand floorng wll be provded at the storage places of Petrol/Ol/Lubrcants to avod sol and water contamnaton due to spllage. Storage of cement: Damp-proof floorng, as per IS codes Storage of blastng materals: Shall be as per the specfc provsons of law Fre fghtng arrangement Demarcaton of area susceptble to fres wth cautonary sgnage, Portable fre extngushers and/or sand baskets shall be provded at easly accessble locatons n the event of fre, Contractor shall educate the workers on usage of these equpments Interactons wth host communtes To ensure that there s no conflct of the mgrant labor wth the host communtes, the contractor shall ssue dentty cards to labourers and resdents of constructon camps Preventon of spread of HIV/AIDs The contractor/ PIU shall nform the Dstrct Health authortes / State AIDS control organzatons about the locaton of the constructon camp and the number of workers lkely to resde n such camps. They shall arrange to hold awareness tranng of the workers. They shall provde all assstance to the states AIDS control organzaton to carry out effectve survellance. 3.3 Constructon Stage Constructon camps shall be mantaned free from ltter and n hygenc condton. It should be kept free from spllage of ol, grease or btumen. Any spllage should be cleaned mmedately to avod polluton of sol, water stored or adjacent water bodes. Followng precautons need to be taken n constructon camps. Measures to ensure that no leachng of ol and grease nto water bodes or underground water takes place Wastewater should not be dsposed nto water bodes Regular collecton of sold wastes should be undertaken and should be dsposed off safely All consumables as the frst ad equpment, cleanng equpment for mantanng hygene and santaton should be recouped mmedately PIU wll montor the cleanlness of constructon campstes and ensure that the stes are properly mantaned throughout the perod of the contract. 3.4 Post Constructon Stage At the completon of constructon, all constructon camp facltes shall be dsmantled and removed from the ste. The ste shall be restored to a condton n no way nferor to the condton pror to commencement of the works. Varous actvtes to be carred out for ste restoraton are: Ol and fuel contamnated sol shall be removed and transported and bured n waste dsposal areas. On the constructon camp ste, saplngs of speces smlar to that of cut trees shall be planted. Saplngs planted shall be handed over to the communty or the land owner for further mantenance and waterng Soak pts and septc tanks shall be covered and effectvely sealed off. The contractor shall execute all works to restore the ste and land cleared of all debrs and shall hand over to the communty or lesser n tdy and clean condton wthout any encumberance. 3-3

25 ECoP-4.0 Alternate Materals for Constructon 4.1 General The use of alternate materals for constructon focuses on the management and reuse of waste materals locally avalable n the project area wth the added advantage of economzng the project cost ncase lead for usual road materals s hgh. Potental waste materals that can be used n PMGSY nclude: fly ash, blast furnace slag, marble slurry, quarry overburden, and other ndustral wastes. Lme or mechancal stablzaton technques should be utlsed n case the materals avalable around the project area s not sutable for constructon n ts orgnal condton. The gudelnes for the use of waste materals n rural roads constructon are lad down n IRC:SP-20:2002. Ths code of practce focuses on the feasblty of adopton of these materals for constructon n the four project states Detals of materal avalable n Rajasthan for all dstrcts along wth ther sutablty are avalable wth Rajasthan PWD. Ths nformaton should be utlzed n determnng the alternate materal for the partcular areas. Smlar nformaton should be collected n all the dstrcts n other states and kept for ready reference. Ths should nclude data about the locaton of the quarry, ts dstance from the man road and engneerng propertes of the road constructon materal. The data can be collected from the mnng department as well the experence of the local staff responsble for road constructon n the dstrct or block. The avalablty of alternate and ts sutablty shall be also be determned and recorded n the data Locally avalable bamboos n form of wattle mats can be used for stablzng slopes and for eroson control measure. 4.2 Project Preparaton Stage Durng the DPR stage, the sources and sutablty of alternate materals should be dentfed. In case of avalablty of alternate materals, the DPR shall specfy the followng: Characterstcs and avalablty of the materal Possblty of use n the project Methods of testng, specfcatons, recommended usage and v Mechansm for procurng and transportng to the ste. The feasblty of ts use shall be based on the lead from the project corrdor, sutablty of the materal and the extent of use The PIU must ensure that provson shall be made n bd document under specal condtons of contract specfyng the use of fly ash, f avalable n the vcnty of the project area as per the central government drectve on the ssue A separate BoQ to be ncluded for alternate materals n case they are avalable n the proxmty of the project area 4.3 Pre-constructon Stage Testng shall be done as per IS specfcatons, n order to evaluate sutablty of the alternate materals. In case test results do not match the specfcatons; opton of blendng the materal wth standard materals to meet the requred specfcatons should be explored The Contractor shall approach the suppler dentfed based on lead and materal sutablty and shall sgn an agreement specfyng the quantty of the materal to be procured In case quarry overburden s to be used as fll materal, a Memorandum of Understandng MoU between the quarry owner and the contractor would be sgned. The format for MoU would be as per Annexure

26 4.4 Constructon Stage The procured alternate materal shall be transported by the contractor at hs own cost Incase of fly ash as an alternate materal, as per MoEF Notfcaton, S.O. 1164E, dated 5 th November 2002, wthn the 100 km radus of thermal power plants, t s the responsblty of the Contractor to transport the fly ash to the constructon ste Care should be taken that all the loose materal fly ash, quarry overburden, etc shall be covered to avod fugtve emssons durng transportaton to avod spllages Incase of transportng slag as well as marble slurry, free board should be mantaned and talboard should be properly closed and sealed Whle storng the alternate materal, Contractor shall undertake all precautonary measures to prevent leachng of the materals PIU must ensure that the use of alternate materal s as per specfcatons 4.5 Descrpton of Alternate Materals Blast Furnace Slag: The ron and steel plants produce large quanttes of waste known as blast furnace slag. Whle producng 1 ton of steel, nearly an equvalent amount of slag s generated. Hence, the dsposal of ths slag s of great concern. The engneerng propertes of ths materal reflect hgh bearng capacty as well as good nterlockng between slag and aggregate Blast furnace slag after testng can be used as pavement materal as a base or sub-base, ether bound or unbound. IRC:SP-20:2002, Chapter 9, gves a bref descrpton of dfferent types of slag avalable and test method to check ther sutablty Fly Ash: MoEF Notfcaton, S.O. 1164E, dated 5 th November 2002, GoI has made mandatory the use of fly ash wthn a radus of 100 km from coal or lgnte based thermal power plants. Detaled desgn specfcatons for the use of fly ash are gven n IRC:SP-20:2002, Chapter 9. General requrements of the materal for embankment constructon wth fly ash s gven n IRC:SP-58: Wth the reference to the IRC:SP-20:2002, Chapter 9, Fgure 9.3 Typcal cross-secton of the embankment wth core of fly ash, consderng the formaton wdth 7.5 m and base / sub base heght 0.33 m, only at those places where embankment heght n greater than 0.83 m fly ash as an alternate materal can be used. Table 4-1 hghlghts the percentage reducton n the quantty of earth. Table 4-1 Reducton n earth requrement for embankment heghts 0.5 & 1.0m by usng fly ash Embankment ht - 0.5m Embankment ht m Formaton Wdth m Carrage Way m Embankment Heght m Surface Course + Base + Sub Base m Earthen Shoulder m Amount of Sol n Sub Grade cu m Amount of Sol n Earthen Shoulder cu m Total Sol Requrement cu m In case of Fly Ash Amount of Flyash cu m Fly ash cannot be used 1.22 Amount of Earth Requre cu m % Reducton n Amount of Earth

27 4.5.5 Quarry Over-Burden: Whle procurng the aggregates, sand and sub-base materal from the quarres, large amount of overburden s generated that can be utlzed as fll materal for constructon of embankment, brdge approaches as well as durng the constructon of ppe culverts as a cushon In case quarry operator s other than the Contractor, t s the sole responsblty of the Contractor to procure the overburden. The Contractor must sgn an agreement wth the quarry owner specfyng the detals of type of overburden, quantty and the responsblty to transport the overburden. A copy of the agreement has to be submtted to the PIU Marble Slurry: It s a waste product of the marble ndustry can be successfully used n: - Constructon of road pavement layers Constructon of embankments Back fll materal for retanng walls and In mass concrete work as a replacement of fne aggregate.e. sand upto 40% Use of Constructon Scrap / Waste: Incase an upgradaton of ether Natonal or State Hghway, s n progress n the proxmty of the PMGSY project road, the constructon wastes generated shall be utlzed as an alternate materal for the PMGSY road constructon. Table 10-2 of ECoP-10.0, Waste Management dentfes commonly generated constructon waste that can be utlzed durng the constructon of PMGSY road. Care shall be taken to segregate waste from the mx before reuse. Sol Stablsaton: In sols as black cotton or clayey sols, stablzaton technques as per IRC:SP-20:2002 shall be adopted. ENGINEERING PROPERTIES OF BLAST FURNACE SLAG Gradaton: Steel slag aggregate used n hot mx asphalt and for surface treatment should meet the gradaton requrement as conventonal aggregate. Specfc Gravty: Due to the relatvely hgh specfc gravty 3.2 to 3.6 of steel slag, steel slag aggregate can be expected to yeld a hgher densty product compared wth that of conventonal mxes Bulk relatve denstes are 15 to 25 percent greater than most conventonal mxes. Durablty: Steel slag aggregate s very hard and abrason resstant. Steel slag aggregates dsplay good durablty wth resstance to weatherng and eroson. Mosture Content: The relatvely rough surface texture deep pores of steel slag ncreases the susceptblty of the aggregate to dfferental dryng and potental retenton of mosture n the hot mx. Mosture retenton coupled wth the presence of oxdes prone to hydraton could result n volumetrc nstablty. To mnmze dryng requrements and the potental for hydraton reactons, steel slag aggregate mosture content should be lmted to 5 percent pror to use n hot mx asphalt. The mosture content of the steel slag aggregate after dryng should be no greater than 0.1 percent. Frctonal Propertes: The results of polshed stone values PSV, hgh values desrable and aggregate abrason values AAV, low values desrable supports the general fndng that steel slag aggregate exhbts superor frctonal resstance for pavements.the hgh frctonal resstance, as well as the abrason resstance of steel slag aggregate, s advantageous n applcatons where hgh wear resstance s requred, such as ntersectons and parkng areas. Thermal Propertes: Steel slag aggregates have been reported to retan heat consderably longer than conventonal natural aggregates. The heat retenton characterstcs of steel slag aggregates can be advantageous for hot mx asphalt repar work durng cold weather. Stablty: Steel slag aggregate mxes combne very hgh stabltes 1.5 to 3 tmes hgher than conventonal mxes wth good flow propertes. Strppng Resstance: Steel slag mxes typcally exhbt excellent resstance to strppng of asphalt cement from the steel slag aggregate partcles. Resstance to strppng s probably enhanced because of the presence of free lme n the slag. Ruttng Resstance: The hgh stablty 1.5 to 3 tmes hgher than conventonal mxes wth good flow propertes results n a mx that ressts ruttng after coolng, but can stll be compacted. Ruttng resstance s advantageous for hghways, ndustral roads, and parkng areas subjected to heavy axle loads. 4-3

28 ECoP-5.0 Borrow Areas 5.1 General Embankment fll materal s to be procured from borrow areas desgnated for the purpose. The propertes of the borrow materal shall be got tested and recorded on Format 4.1 of IRC:SP- 20:2002. Scope of ths ECoP extends to measures that need to be ncorporated durng borrow area locaton, materal extracton and rehabltaton. Table 5-1 presents key actvtes nvolved n borrowng materal and the sgnfcance of mpacts across the project regons. Stages Preconstructon Constructon Post- Constructon Table 5-1: Sgnfcance of Impacts across Project Regons Key Actvtes Sgnfcance of Impacts Uttaranchal J & K Bhar Hlly areas Locatng Borrow Areas Strppng & Stockplng Materal Extracton Reclamaton of Borrow Areas Impacts not lkely to be sgnfcant Impacts lkely to be sgnfcant Other areas Low hlls Hgh hlls Flood plans Other areas Arunachal Pradesh/ Mzoram Hlls Plateau 5.2 Project Plannng and Desgn Stage Earth requrement can be reduced through Measure Reducton of formaton wdth from 7.5 m to 6.0 m n stretches where traffc volume s low Restrcton of embankment heght to m n areas recevng annual ranfall less than 400mm or at locatons where natural dranage s not obstructed and the fnshed level of the pavement s m above the adjonng ground Use of flyash as an alternate fll materal, wthn a radus of 100 km of Coal or Lgnte based thermal power plant as per MoEF Notfcaton, Part II, Secton 3, Sub-secton, 2002, S.O. 1164E Industral and quarry wastes wll be utlzed as fll materal n embankments where sutable materal s avalable. Extent of reducton of earth requrement 23 %. 24% 15 % Vares dependent upon the nature of materal Desgn measures for reducton n quantty of earth work wll have to be undertaken to reduce the quantty of materal extracted and consequently decrease the borrow area requrement Borrow area stng should be n complance wth IRC: The DPR shall contan Gudelnes for locatng ste of borrow areas The arrangements to be worked out wth the land owner/communty for the ste and Sample desgns for redevelopment of borrow areas. 5.3 Pre-constructon stage The contractor shall dentfy the borrow area locatons n consultaton wth the ndvdual owners n case of prvate lands and the Gram Panchayat n case of Gram Sabha lands, after assessng the sutablty of the materal. The sutable stes shall be selected and fnalsed n consultaton wth the PIU. 5-4

29 Borrowng to be avoded on Lands close to toe lne, but n no case less than 1.5m Irrgated agrcultural lands Grazng land Lands wthn 0.8km of settlements Envronmentally senstve areas o Desgnated protected areas / forests o Unstable sde-hlls o Water-bodes o Wetlands o Streams and seepage areas o Areas supportng rare plant/ anmal speces Practces to avod Borrowng adjonng road embankment The Contractor wll work out arrangements for borrowng wth the land owner/gram Panchayat. The arrangements wll nclude the redevelopment after completon of borrowng. The arrangements wll be verfed by the PIU /GS to enable redressal of grevances at a later stage of the project. The Engneer of PIU shall approve the borrow area after nspecton of the ste to verfy the reclamaton plan and ts sutablty wth the contractor and landowner. The contractor shall commence borrowng sol only after the approval by the PIU. Arrangements wth landowners Contractor shall submt to PIU Wrtten No-objecton certfcate of the owner/cultvator Extent of land requred and duraton of the agreement Photograph of the ste n orgnal condton Detals of ste redevelopment after completon 5.4 Constructon stage Redevelopment plan to address Land use objectves and agreed post-borrowng actvtes Physcal aspects landform stablty, eroson, re-establshment of dranage Bologcal aspects speces rchness, plant densty, for areas of natve revegetaton Water qualty and sol standards Publc safety ssues No borrow area shall be operated wthout permsson of the Engneer. The procurement of borrow materal should be n conformty to the gudelnes lad down n IRC: In addton, the contractor should adopt the followng precautonary measures to mnmse any adverse mpacts on the envronment:. The unpaved surfaces used for haulage of borrow materals wll be mantaned dust free by the contractor through sprnklng of water twce a day durng the perod of use.. To avod any embankment slppage, the borrow areas wll not be dug contnuously, and the sze and shape of borrow pts wll be decded by the Engneer.. Borrow pts stuated less than 0.8 km f unavodable from vllages and settlements should not be dug for more than 30 cm after removng 15cm of topsol and should be draned. v. The Contractor shall mantan eroson and dranage control n the vcnty of all borrow pts and make sure that surface drans do not affect the adjacent land or future reclamaton. Ths needs to be rechecked by the engneer of the PIU. v. In case the borrow pt s on agrcultural land, the depth of borrow pts shall not exceed 45 cm and may be dug out to a depth of not more than 30 cm after strppng the 15 cm top sol asde. Incase of strppng and stockplng of topsol, provsons of ECoP-6.0, Topsol Salvage, Storage and Replacement need to be followed. 5-5

30 v. v. v. x. To prevent damages to adjacent propertes, the Contractor shall ensure that an undsturbed buffer zone exsts between the dstrbuted borrow areas and adjacent land. Buffer zone shall be 3 m wde or equal to the depth of excavaton whchever s greater. Incase of rversde, borrow pt should be located not less than 15m from the toe of the bank, dstance dependng on the magntude and duraton of flood to be wthstood. In no case shall be borrow pt be wthn 1.5m from the Toe lne of the proposed embankment. The reclamaton of borrow area shall begn wthn one month after earthworks are complete n any stretches thar are served by a partcular source. 5.5 Post Constructon Stage It needs to be ensured that all reclamaton has been carred out n accordance wth the redevelopment plan. The ste shall be nspected by the PIU after mplementaton of the reclamaton plan Certfcate of Completon of Reclamaton s to be obtaned by the Contractor from the landowner that the land s restored to hs satsfacton format attached as Annexure 5-1. The fnal payment shall be made after the verfcaton by PIU. Redevelopment of borrow areas- Possble optons Dependng on the choce of the ndvdual land owner/communty, the contractor shall prepare redevelopment plans for the borrow areas. The optons can be: Restorng the productve use of the land Development of detenton ponds n barren areas. Opton I: Sutable n locatons wth hgh ranfall and productve areas... v. Topsol must be placed, seeded, and mulched wthn 30 days of fnal gradng f t s wthn a current growng season or wthn 30 days of the start of the next growng season. Vegetatve materal used n reclamaton must consst of grasses, legumes, herbaceous, or woody plants or a combnaton thereof. Plants must be planted durng the frst growng season followng the reclamaton phase. Selecton and use of vegetatve cover must take nto account sol and ste characterstcs such as dranage, ph, nutrent avalablty, and clmate to ensure permanent growth. v. The vegetatve cover s acceptable f wthn one growng season of seedng, the plantng of trees and shrubs results n a permanent stand, or regeneraton and successon rate, suffcent to assure a 75% survval rate. Opton II: In barren land, the borrow areas can be redeveloped nto detenton ponds. These wll be doubled up as water bodes and also for removal of sedment from runoff flowng through the ponds. Desgn of the detenton basn depends upon the partcle sze, settlng characterstcs, resdence tme and land area. A mnmum of 0.02 mm sze partcle wth a settlng velocty of 0.02 cm/sec assumng specfc gravty of solds 2.65 can be settled n the detenton basn. The desgn area of detenton basn s based on the followng equaton: Q A = 1. 2 ν Where A = Area n Sq.m, Q = Dscharge n Cum and v= Settlng velocty, cm/s Followng parameters are to be observed whle settng up a detenton pond. Pond should be located at the lowest pont n the catchment area. Care should be taken that the horzontal velocty should be less then settlng velocty to prevent suspenson or eroson of deposted materals.. Mnmum Effectve Flow Path: 5 tmes the effectve wdth. Mnmum Free Board: 0.15 m v. Mnmum Free Settlng Depth: 0.5 m v. Mnmum Sedments Storage Depth: 0.5 m v. Maxmum nteror slope: 2H : 1V v. Maxmum exteror slope: 3H : 1V v. x. x. x. The nlet structure should be such that ncomng flow should dstrbute across the wdth of the pond. A pre-treatment sump wth a screen should provde to remove coarse sedments. Settled sedment should be removed after each storm event or when the sedment capacty has exceeded 33% of desgn sedment storage volume. Accumulated sedment must be dsposed of n a manner, whch wll prevent ts re-entry nto the ste dranage system, or nto any watercourse. 5-6 Checklst of tems for nspecton by PIU Complance of post-borrowng actvtes and land use wth the reclamaton plan Vegetaton densty targeted, densty acheved n case of re-vegetaton, speces planted as per reclamaton plan Dranage measures taken for nflow and outflows n case borrow pt s developed as a detenton pond Decrease of rsk to publc due to reclamaton Condton of the reclamed area n comparson wth the pre-borrowng condtons

31 ECoP-6.0 Topsol Salvage, Storage and Replacement 6.1 General Loss of topsol s a long term mpact along PMGSY roads due to ste clearance and wdenng for road formaton development of borrow areas temporary constructon actvtes as constructon camps, materal storage locatons, dverson routes etc. Scope of ths ECoP ncludes removal, conservaton and replacement of topsol lkely to be mpacted. Table 6-1 lsts the key actvtes that need to be addressed durng project stages and the sgnfcance of mpacts n the project regons. Stages Preconstructon Constructon Post Constructon Table 6-1: Sgnfcance of Impacts across Project Regon Key Actvtes Settng up constructon actvtes Strppng & Stockplng Eroson Control Measures Reuse of Topsol Sgnfcance of Impacts Uttarakhand J & K Bhar Hlly Areas Impacts not lkely to be sgnfcant Impacts lkely to be sgnfcant Other areas Low hlls Hgh hlls Flood plans Other areas Arunachal Pradesh/ Mzoram Hlls Plateau 6.2 Project Plannng & Desgn Stage The algnment fnalsaton shall be done to mnmse uptake of productve land, as lad down n ECoP 1.0, Project Plannng and Desgn. At the project preparaton stage, the followng shall be estmated: Extent of loss of top sol due to wdenng and stng of constructon actvtes Estmates of borrow area requrements and Area requrement for topsol conservaton. The bd document shall nclude provsons that necesstate the removal and conservaton of topsol at all locatons opened up for constructon by the Contractor. An tem need to be provded n the BoQ to cover ths actvty. Strppng of top sol may however be dffcult n case of rocky strata and hll slopes. 6.3 Pre-constructon Stage The arrangements for temporary usage of land, borrowng of earth and materals by the Contractor wth the land owner/gram Sabha shall nclude the conservaton / preservaton of topsol. 6.4 Constructon Stage It shall be the responsblty of the Contractor to strp the topsol at all locatons opened up for constructon. The strpped topsol should be carefully stockpled at sutable accessble locatons approved by the PIU. At least 10% of the temporarly acqured area shall be earmarked for storng topsol. In case of 6-7 Locate stockples n A secure area away from o Grade, Subsol & Overburden materals; o Pt actvtes; and o Day-to-day operatons. Areas that do not nterfere wth future pt expanson and Areas away from dranage paths and uphll of sedment barrers.

32 hlly and desert areas, topsol wth humus wherever encountered whle openng up the ste for constructon shall be strpped and stockpled. ref: MORD techncal specfcaton no & for measurement for payment The stockples for storng the topsol shall be desgned such that the slope does not exceed 1:2 vertcal to horzontal, and the heght of the ple s restrcted to 2m. A mnmum dstance of 1m s requred between stockples of dfferent materals In cases where the topsol has to be Vegetatve materal for stockple stablsaton preserved for more than a month, the Must consst of grasses, legumes, herbaceous, or stockple s to be stablsed wthn 7 woody plants or a mxture thereof days of formng. The stablsaton shall Selecton & use of vegetatve cover to take nto account be carred out through temporary sol and ste characterstcs such as dranage, ph, seedng. It conssts of plantng rapdgrowng annual grasses or small nutrent avalablty, and clmate to ensure permanent growth grans, to provde ntal, temporary cover for eroson control After spreadng the topsol on dsturbed areas, t must be ensured that topsol s seeded, and mulched wthn 30 days of fnal gradng Durng constructon, f eroson occurs from stockples due to ther locaton n small dranage paths, the sedmentladen runoff should be prevented from enterng nearby watercourses Preservaton of Stockples: The Contractor shall preserve the stockple materal for later use on slopes or shoulders as nstructed by the Engneer. 6.5 Post Constructon Stage Preservng stockples Precautons Stockples wll not be surcharged or otherwse loaded and multple handlng wll be kept to a mnmum to ensure that no compacton wll occur. Dvert runoff around stockples unavodably located n dranage paths usng a permeter bank uphll. The stockples shall be covered wth gunny bags or tarpauln mmedately n case they are not stored for perods longer than 1 month The topsol shall be re-lad on the area after takng the borrow earth to mantan fertlty of the agrcultural feld, fnshng t to the requred levels and satsfacton of the farmer The area to be covered wth vegetaton shall be prepared to the requred levels and slope as detaled n the DPR. The stockple materal shall be spread evenly to a depth of 5-15cm to the desgned slopes and waterng the same as requred. The growth of the vegetaton shall be montored at frequent ntervals All temporary arrangements made for stockple preservaton and eroson control are to be removed after reusng the stockple materal. 6-8

33 ECoP-7.0 Quarry Management 7.1 General Ths code of practce pertans to the measures to address envronmental concerns n quarres. The general practce adopted s to procure materals from exstng quarres operatng wth the requste permts. Scope of ths ECoP extends to management measures n the event of the Contractor startng up new quarres 3 for extracton of materal for ths project only. Table 7-1 presents the actvtes to be addressed durng quarry operatons and the sgnfcance of mpacts n the project regons. Table 7-1 Sgnfcance of Impacts across Project Regon Stages Constructon Preconstructon Post- Constructon Key Actvtes Establsh new quarry Sgnfcance of Impacts Uttarakhand J & K Bhar Hlly areas Precautons durng quarry operatons Implementaton of Redevelopment Plan Impacts not lkely to be sgnfcant Impacts lkely to be sgnfcant Other areas Low hlls Hgh hlls Flood plans Other areas Arunachal Pradesh/ Mzoram Hlls Plateau 7.2 Project Plannng and Desgn Stage The PIU shall provde n the DPR, a lst of lcensed quarres operatng wthn the dstrct and adjonng dstrcts. In addton, the DPR shall contan the followng: Lead from the varous exstng quarres and Adequacy of materals for the project n these quarres Only n the event of non-avalablty of exstng quarres, shall the Contractor open a new quarry n accordance wth Mnes and Mnerals Development & Regulaton Act, The bd document shall nclude the exhaust quarry redevelopment as per needs of the landowner / communty In the hlly areas hard stone avalable from cuttng can be utlzed and debrs put to productve use as stated n ECoP-10 Waste Management 7.3 Pre-constructon Stage The Contractor shall select lcensed quarry for procurng materals. The Contractor shall establsh a new quarry only wth the pror consent of the PIU only n cases when: Lead from exstng quarres s uneconomcal and Alternatve materal sources are not avalable. The Contractor shall prepare a Redevelopment Plan for the quarry ste and get t approved by the PIU. No redevelopment shall be requred f the materal avalable from cuttng s utlzed n the road constructon. 3 The management of envronmental concerns n the exstng quarres or the redevelopment of exhausted quarres s outsde the purvew of the Contractor s scope. Ths s due to: SPCBs are the nodal agences for ensurng the qualty of ar and water, and The mandate for the montorng of redevelopment of exhausted quarres s vested wth the Government agency ssung permts. Therefore, the quarry operator s not bound to adhere to any addtonal envronmental requrements lad down by the project for the entre quarry operatons, as the project s one of the many users of the quarry. 7-1

34 7.3.2 The constructon schedule and operatons plans to be submtted to the PIU pror to commencement of work shall contan a detaled work plan for procurng materals that ncludes procurement, transportaton and storage of quarry materals. Operatons & redevelopment plan f a new quarry s opened. Photograph of the quarry ste pror to commencement. The quarry boundares as well as locaton of the materals deposts, workng equpments, stockplng, access roads and fnal shape of the pt. Dranage and eroson control measures at ste. Safety Measures durng quarry operaton. Desgn for redevelopment of exhaust ste. Opton A: Revegetatng the quarry to merge wth surroundng landscape: Ths s done by conservng and reapplyng the topsol for the vegetatve growth Opton B: Developng exhausted quarres as water bodes: The pt shall be reshaped and developed nto pond, for harvestng ranwater. Ths opton shall only be consdered where the locaton of quarry s at the lowest pont,.e. surroundng areas / natural dranage slopes towards t. 7.4 Constructon Stage Development of ste: To mnmze the adverse mpact durng excavaton of materal followng measures are need to be undertaken: Adequate dranage system shall be provded to prevent the floodng of the excavated area At the stockplng locatons, the Contractor shall construct sedment barrers to prevent the eroson of excavated materal due to runoff. Constructon of offces, laboratory, workshop and rest places shall be done n the up-wnd of the plant to mnmze the adverse mpact due to dust and nose. v The access road to the plant shall be constructed takng nto consderaton locaton of unts and also slope of the ground to regulate the vehcle movement wthn the plant. v Incase of storage of blastng materal, all precautons shall be taken as per The Explosve Rules, Quarry operatons ncludng safety: Overburden shall be removed and dsposed as per ECoP-10.0, Waste Management. Durng excavaton, slopes shall be flatter than 20 degrees to prevent ther sldng. Incases where quarry strata are good and where chances of sldng are less ths restrcton can be gnored. Incase of blastng, the procedure and safety measures shall be taken as per The Explosve Rules, 1983 v The Contractor shall ensure that all workers related safety measures shall be done as per ECoP-14.0, Publc & Workers Health & Safety. v The Contractor shall ensure mantenance of crushers regularly as per manufacturer s recommendaton Stockplng of the excavated materal shall be done as per stockplng of topsol explaned n ECoP-6.0, Topsol Salvage, Storage & Replacement Durng transportaton of the materal, measures shall be taken as per ECoP-13.0, Constructon Plants and Equpment Management to mnmze the generaton of dust and to prevent accdents The PIU and the Techncal Examner shall revew the quarry ste for the management measures durng quarry operaton, ncludng the complance to polluton norms. 7.5 Post Constructon Stage: The Contractor shall restore all haul roads constructed for transportng the materal from the quarres to constructon ste to ther orgnal state The PIU and the Techncal Examner shall be entrusted the responsblty of revewng the quarry ste for the progress of mplementaton of Redevelopment Plan. These shall nclude the followng two cases: 7-2

35 Redevelopment of quarres opened by the Contractor for the project Redevelopment of exstng quarres operated by other agences In the frst case, the Contractor shall be responsble for the Redevelopment Plan mmedately after obtanng requred quantty of constructon materals say wthn one year.. The PIU shall be responsble for revewng ths case of redevelopment pror to the ssung the defect lablty certfcate. Such redevelopment shall not be requred f the cut materal s utlzed for constructon but the safety of hll slopes shall be ensured as n ECoP 9 Slope Stablty and Eroson Control In the second case, the redevelopment of exhaust quarry shall be the responsblty of the agency provdng the permt to ensure the mplementaton of Redevelopment Plan. 7-3

36 ECoP-8.0 Water for Constructon 8.1 General The terms and condtons of ths Code of Practce pertan to the procurement of water requred for constructon. Except btumnous works, water s requred durng all stages of road constructon such as Embankment Sub-Grade; Granular sub-base GSB and Water Bound Macadam WBM. The actvtes requrng addressal durng the project stages and the sgnfcance of mpacts n the project regons are presented n Table 8.1. Stages Project Plannng & Desgn Stage Preconstructon Stage Constructon Table 8-1: Sgnfcance of mpacts across project regons Key actvtes Schedulng constructon to sut water avalablty Identfcaton of alternate water sources Arrangements for procurng water Sgnfcance of mpacts Uttarakhand J & K Bhar Hlly areas Other areas Extracton of water Impacts not lkely to be sgnfcant Impacts lkely to be sgnfcant Low hlls Hgh hlls Flood plans Other areas Arunachal Pradesh/ Mzoram Hlls Plateau 8.2 Project Plannng & Desgn Stage The Detaled Project Report shall contan the followng nformaton: Estmate of water requrement durng dfferent seasons based on constructon schedule of varous stages of the project, Identfcaton of potental sources of water for constructon, Arrangements to be worked out by the contractor wth ndvdual owners, when water s obtaned from prvate sources, Permts requred for openng up new sources, as per the requrements of the exstng statutory provsons, and Whether scarcty of water would have any mpact on schedule of constructon. In water-scarce regons, provde the followng addtonal nformaton n DPR Explorng possbltes for use of exstng perennal sources, through nteractons wth water user groups as the vllagers, relevant Panchayat Raj Insttutons PRIs and the Government Department, keepng n vew that the water extracton does not nfrnge upon the usufruct rghts of the exstng water users. Identfcaton of potable water source for domestc use of workers and for use n cement - based constructon such as cement concrete roads, culverts and other cross dranage works. Identfcaton of alternate water sources, water-harvestng technques wll be explored for use n hlly areas of Jammmu & Kashmr, Uttarakhand, Arunachal Pradesh and Mzoram to avod water extracton from the exstng communty sources In water scarce regons, f water-harvestng structures are to be constructed, sutable locatons and mechansm for stng these structures wll be dentfed. These are envsaged to be permanent water tanks for collecton of stream water. Detaled drawngs of water harvestng structures based on ste condtons wll need to be worked out and presented n the DPR. No 8-1

37 extra payment shall be generally made for these works and the Contractor has to nclude the cost of these tems n hs offer whle quotng hs tendered rate Schedulng Constructon n Water Scarce Areas: As part of the project preparaton, PIU shall conduct an assessment of water requrement and avalablty n water scarce regons. As far as possble, schedule for constructon n these water scarce areas shall be prepared such that earthwork for embankment s carred out just before monsoon, so that water requrement for subsequent constructon works such as granular sub-base and water bound macadam are met n monsoon and post monsoon season. Carryng out these actvtes even durng the monsoon s possble as the ranfall may not be hgh enough to dsrupt constructon. 8.3 Pre-constructon stage Pror to commencement of extracton of water for constructon, the contractor shall work out arrangements as specfed n the DPR. Arrangements for procurng water by contractor In case of communty water sources, the Contractor wll carry out consultatons and obtan wrtten consent of Gram Panchayat for extracton of water through wrtten arrangements wth the PRI towards the same. Format of the Letter of Consent s presented n Annexure 8-1. In case of prvate water sources, the Contractor shall not commence procurement of water from a source unless and untl the wrtten consent of all current regstered owners of the parcel or parcels on whch the source s located has been obtaned. In case of new tube-wells, the Contractor shall obtan clearances requred from the Ground Water Board as requred. The stng of such tube-wells shall be at a dstance of not less than 20m from any septc tank/soak pt or other source of polluton. In case of water harvestng structures f requred, the Contractor shall n consultaton wth the resdents, dentfy sutable locatons for stng the structure and construct the same. In case of perennal sources, the Contractor shall adhere to all admnstratve procedures pertanng to procurement of water from such sources. 8.4 Constructon Stage Durng constructon, the Contractor shall be responsble to montor the followng: The arrangements worked out wth the PRI/ndvdual land owners for water extracton s adhered to, Extracton of water s restrcted to constructon requrement and domestc use of constructon workers Water requrement for curng of concrete shall be mnmzed by poolng of water over the concrete or by coverng wth wet gunny bags Water used for mxng of mortar/concrete and subsequent curng s free from njurous amount of ol, acds, alkals, salts, sugar, organc materals or other substances that may be deleterous to concrete or steel and ths water should conform to Clause 1010 of MoRT&H Specfcatons for Road and Brdge works Fourth Revson and IS: 456, and, The potable water used for drnkng purposes of constructon workers shall be as per the Indan Standard for Drnkng Water IS: 10500, Pror to ssung project completon certfcate to the contractor, the PIU shall verfy that the premses of water extracton ponts are restored to ther orgnal status after constructon. 8-2

38 ECoP-9.0 Slope Stablty and Eroson Control 9.1 General Comment: Page: 1 Katara: Cost escalaton due to provson of slope stablzaton measures to be defended Stablty of slopes s a major concern n hll areas and locatons of hgh embankment. In cases of hgh embankment, water retenton at the embankment base ntally causes toe falure and subsequently falure of the whole embankment. Sol eroson s consequent to hgh runoff on hll slopes Hgh wnd veloctes cause eroson of embankments made up of coheson-less sandy sols. Embankments made up of slty and sandy sols are eroded, n the absence of vegetatve cover, when the slopes are steep say more than 20 Degree Eroson control s provded to prevent sol damage done by movng water, ether by dsplacement of sol by water n moton or depost of sol by sedmentaton at ponts of low velocty. Eroson n hlly areas occur when the natural slopes are affected due to cuttng or due to ngress of water n the rock mass and leechng/ weakenng of jontng compounds The scope of ths ECoP ncludes measures to mnmze the adverse envronmental mpacts on slope stablty and sol eroson due to the constructon of roads. The adverse envronmental mpact can be: damage to adjacent land, sltng of ponds and lakes dsturbng the aquatc habtat eroson of rch and top fertle top layer of sol v contamnaton of surface water bodes and v reducton n road formaton wdth due to eroson of shoulders/berms. Table 9-1 hghlghts the key actvtes that need to be addressed durng the project stage and also the sgnfcance of mpacts n dfferent regons. Stages Project Plannng & Desgn Stage Durng Constructon Post-Constructon Table 9-1 Sgnfcance of Impacts across Project Regon Key Actvtes Slope consderatons Eroson consderatons Eroson Control Measures Slope Stablsaton Sgnfcance of Impacts Uttarakhand J & Kl Bhar Hlly areas Other areas Impacts not lkely to be sgnfcant Impacts lkely to be sgnfcant Low hlls Hgh hlls Flood plans Other areas Arunachal Pradesh/ Mzoram Hlls Plateau 9.2 Project Plannng and Desgn Stage Durng the detaled project preparaton phase, the followng nvestgatons shall be carred out pror to fnalsaton of algnment. a Topographcal b Hydrologcal : Interrupton and dsrupton due to exstng dranage system c Geo-techncal and d Geologcal Investgaton n case of hll roads e Aesthetc consderaton The rock profle, other nformaton and geologcally crtcal sectons are dentfed based on surveys carred out by Geologcal survey of Inda. Map of the crtcal areas shall be notfed dstrct wse to provde a broad profle 9-1

39 9.2.3 Slope stablty analyss for retanng / breast walls of heght greater than 5m shall be carred out n hlly areas. The stablty analyss shall be as per IRC: SP-48: Based on these nvestgatons slope stablsaton measures are to be ncorporated for fnalsng the algnment desgn In addton to the slope stablty analyss the algnment should be such that Steep as well as heavy cuts are avoded, Flora and fauna of the area are dsturbed to a mnmum possble extent and Natural dranage pattern s not obstructed For hgh embankments, geo-techncal nvestgatons to determne of C, φ, densty etc. of the avalable materal need to be conducted to check ts sutablty as fll materal. 9.3 Pre-constructon stage Interceptor dtches are constructed n hll areas to protect the road bench and hllsde slope from eroson due to heavy ranfall and runoff. Interceptor dtches are very effectve n the areas of hgh ntensty ranfall and where the slopes are exposed. These are the structures desgned to ntercept and carry surface runoff away from erodble areas and slopes, thus reducng the potental surface eroson. Fgure 9.1 shows typcal nstallaton of nterceptor dtch structure as well as dtch lnng types. The PIU must ensure that the layout and stng of dtches s as per gudelne on Road Dranage IRC:SP- 42:1994. LINED DITCH FOR TEMPORARY USE ON STEEP SLOPES AND ERODIBLE SOILS Fgure 9.1: Typcal Interceptor Dtch/Catch-water dran constructon & applcaton 9.4 Constructon Stage When alternatve materal such as fly ash s used for embankment formaton, t needs to be ensured that suffcent flter bed s provded along wth the top cap. All tests as per IS: 2720 Parts: 4, 5, 8 & 40 and IRC: SP: are to be conducted on the embankment to keep a check on the compacton acheved Slope stablsaton technques and eroson control measures as mentoned below are to be undertaken n hll areas. Increasng vegetaton: On sde slopes n hlls, mmedately after cuttng s completed and debrs s removed, vegetatve growth has to be ntated by plantng fast growng speces of grass. Ths would prevent hgh veloctes of runoff and resultant gully formaton as well as poundng of water on the road bench. Box 9-1 gves detaled specfcatons for provson of vegetaton cover. 9-2

40 Box 9-1: Detaled specfcatons for Vegetatve cover Descrpton: The vegetatve cover should be planted n the regon where the sol has the capacty to support the plantaton and at locatons where meteorologcal condtons favours vegetatve growth. Ste Preparaton: To prevent the seeds from beng washed away subsequent to sowng, the area should be protected wth surface roughenng and dversons. Sol samples should be taken from the ste and analysed for fertlser and lme requrements. Seed Applcaton: The seed should be sown unformly as soon as preparaton of the seedbed has been completed. No seed should be sown durng wndy weather, or when the ground surface s wet, or when not tllable. Mantenance: Durng frst sx weeks, the plantng should be nspected by the PIU, to check f the growth s unform and dense. Approprate mosture levels shall be mantaned. There may be requrement of waterng the plantngs regularly durng the dry seasons. Fertlser and pest control applcatons may also be needed from tme to tme. Sausage Walls / Gabons: Sausage wall commonly termed as Gabons are beng used extensvely n hlly areas. The sausage wall are made by formng sausages of galvanzed ron or steel wre nettng of 4 mm da havng 10 cm square or hexagonal openng and fllng the sausages wth hard local boulders / stones and wrappng the wre net at the top. The sausage walls can wthstand large deformaton wthout crackng and are flexble. Further, due to the open structure, they allow free dranage of water. Typcal arrangements wth detaled specfcatons are shown n Fgure 9.2. Sausage Walls shall be shall be constructed n-stu as per IRC: SP: cm x 60cm 4 0cm GABIONS OR SAUSAGE CRATE IN GI WIRE OR GEOGRID 100 cm GABIONS OR SAUSAGE CRATE IN GI WIRE OR GEOGRID 80cm x 30cm a Retanng / Breast Wall b Toe / Check Wall Fgure 9.2 Sausage Wall / Gabon Bally Benchng: To control the eroson on slopes as well as for arrestng the shallow movement of top mantle slde mass at the constructon locaton; the Contractor should provde Bally Benchng. Ths method s also very effectve n preventng gully eroson. Typcal arrangements wth detaled specfcatons are shown n Fgure 9.3. Bally benchng shall be nstalled as per IRC: SP:

41 8 TO 10cm Ø BOULDER 1.0 TO 1.2m m RUNNERS NAILED OR BRACED m m 12 TO 15cm Ø Fgure 9.3: Layout and Desgn Specfcaton for Bally Benchng Check dams: Sheet and channel eroson on hll slopes gentler than 1V:12H can be prevented effectvely through constructon of check dams. Detals are provded n Box 9-2. Box 9-2: Check Dam General: A check dam s a small dam constructed n a dranage way to mtgate sheet and channel eroson by restrctng the flow velocty. On steeper slopes greater than 1: 12 H:V, check dams are not effectve. Basc Desgn Crtera: Check dams are usually constructed of rprap, logs, sandbags, and/or straw bales. The maxmum check dam heght should be 0.6 m. The centre of the check dam should be a mnmum of 25 cm lower than the ends to act as a spllway for runoff, as llustrated n Fgure 9.3 Overflow areas should be stablsed to resst eroson. Stone check dams should use 7.5 cm or larger stone wth sde slopes of 2:1 H:V or flatter and should be keyed nto the sdes and bottom of the channel for a mnmum depth of 0.6 m. The dranage area for a stone check dam should not exceed 0.2 Sq Km PLAN SECTIONS Fgure 9.4: Check Dam Specfcaton Multple check dams should be spaced so that the bottom elevaton of the upper dam s the same as the top elevaton of the next dam downstream, as llustrated n Fgure 9.4 above. 9-4

42 Box 9-3: Detaled Specfcatons For Slt Fencng Descrpton: Slt fencng s a temporary sedment barrer made of woven, synthetc flter fabrc supported by steel or wood post. The purpose of the slt fence s to prevent sedment carred by sheet flow from leavng the ste and enterng to natural dranage or any other water body located near the constructon ste. Slt fencng encourages the sheet flow and reduces the potental for development of rlls and gulles. Care should be taken that slt fences are not nstalled across streams, dtches, waterways or other concentrated flow areas. All slt fencng should be nstalled along the contour, never up or down a slope. Where all the sheet flow run off s to be stored behnd the slt fence, maxmum slope length should not exceed as shown n the Table 9-2 Table 9-2 Crtera For Slt Fence Placement Land Slope % Maxmum Slope Length Above the fence n m < to to to > 20* 4.5 * In areas where slope s greater than 20 %, a flat area length of 3.0 m between the toe of the slope and the fence should be provded Constructon Specfcaton: Slt fencng Refer Fgure 9.5 for Cross-secton conssts of 1.0 m wde flter fabrc and should be placed on the contour. Incase runoff flow or veloctes are very hgh or where slope exceed vertcal heght of 3.0 m, slt fencng should be wre renforced as shown n the Fgure 9.5. The contractor should purchase slt fencng n a contnuous roll to the length of the barrer to avod the use of jont. Incase of jonts, flter cloth should be splced together only at supportng post, wth mnmum 15 cm overlap and securely sealed. The ple s to be drven to a depth of 300 mm nto the ground by pressng from the top. The frame wll be nstalled at the edge of stockples and at the water bodes along whch constructon s n progress. Inspecton: The PIU wll nspect locaton as well as effcency of slt fencng. The nspecton should be done after every 15 days and ncase of storm water, wthn 24 hours after the end of ran. Mantenance: The contractor should remove sedments, once they have accumulated to one-half the orgnal heght of the fence. Flter fabrc should be replaced whenever t has deterorated to such an extent that the effcacy of the fabrc s reduced. Slt fence should reman n place untl dsturbed areas have been permanently stablzed. All the sedments accumulated should be properly dsposed of before the fence s removed. The operaton of removng and dsposng have to be montored by the PIU. PLAN SECTIONS Fgure 9.5 Cross-secton of Slt Fencng 9-5

43 BOX 9-4: Eroson Control Mattng Descrpton: The desgn specfcatons as well as locatons should be fnalsed durng the Project Preparaton Phase. Durng the executon perod n post-constructon stage, PIU must ensure that all the gudelnes are to be followed as per specfcatons durng the ste preparaton and nstallaton of eroson control mattng. Followng are the steps need to be followed for the placng eroson control mattng: Ste Preparaton: The areas should be fertlsed and seeded. A smooth surface free of depressons that allows water to collect or flow under mattng s requred. The sol should be left wth loose surface after seedng. The materal should be steel wre formed nto U shape and should be 15 cm to 25 cm long. Installaton: Flter fabrc made of bodegradable materal eg. Jute should be placed horzontally on the slope less than 2:1 Pror to nettng, a 10 cm anchor trench should be dug at the top and toe of the slope wth the top trench placed 30 cm back from the crown, or a berm over whch the fabrc can be carred. For horzontal applcaton, work must proceed from the bottom towards the top of the slope wth a 10 cm overlap. Cuttng materal should be folded less than 7.5 cm to 10 cm at the end, stapled and covered. Staples should be placed at a spacng of 22.5 cm to 30 cm apart n the trenches along the horzontal lap jonts Sol eroson shall be controlled on hgh embankments by the followng technques: Slt Fencng detaled specfcatons and drawngs are provded n Box 9-3 In regons of ntensve ranfall, locatons of steep slopes, regons of hgh sol eroson potental and regons of short growng seasons, eroson control mattng should be provded. Detaled specfcatons and drawngs are provded n Box 9-4. Brush Barrer detaled specfcatons and drawngs are provded n Box 9-5 BOX 9-5: Detaled Specfcaton for Brush Barrer Descrpton: A brush barrer s a temporary barrer used to control sedment transport by usng the resdue materals avalable from clearng and grubbng.fgure 9.6 Desgn and Constructon Crtera: Brush should be cut and wndrowed approxmately 3 m from the toe of the slope. The brush barrer should be packed densely and should be a mnmum of 1.2 m hgh before compressng. Ths may be accomplshed durng clearng and grubbng by havng equpment push the brush, tree trmmngs, shrubs, stones, root mats, and other materals nto a mounded row on the contour. Logs placed wthn the barrer, parallel to the toe, can help reduce falures. A brush barrer may be compressed by runnng a bulldozer along the top of the wndrow. The compressed barrer should be 0.9 m to 1.5 m hgh and 1.5 m to 3.0 m wde. The top of the barrer should be at least 1.5 m below the fnshed roadway A brush barrer may be left n place after constructon unless t s n an aesthetcally senstve area or t s ndcated otherwse on plans. Mantenance: Inspect a brush barrer after each ranfall and make necessary repars. Sedment deposts should be removed when they reach approxmately half the barrer's heght. 0.6 m m 1.5 m m Varable Slope Varable Ground Lne Stake Front Elevaton Sde Elevaton Fgure 9.6 Brush Barrer Tree & Resdual Materal Wth Dameter > 150 Mm 9-6

44 9.5 Post Constructon Stage All the exposed slopes shall preferably be covered wth vegetaton usng grasses, brushes etc. Locally avalable speces possessng the propertes of good growth dense ground cover and deep root shall be used for stablzaton In case of steep and bare slopes requre stablzaton, n order to retan the seedlng to the ground, asphalt mulch treatment shall be gven. Seedlng are covered wth asphalt emulson and spread nto a thn layer. The asphalt flm gradually dsntegrates and a carpet of green vegetaton and deep-rooted speces of grass and clovers, takes ts place. For detals refer IRC: SP , Chapter Anchorng shall be carred out as per IRC: SP: , Chapter 11 n case of rocks Regular nspecton of check dams and repostonng/replacement of dslodged or stolen stones need to be carred out Repar and mantenance of eroded sde dran nverts s to be done n order to arrest retrogaton of levels n sde drans. Slopes of hgh embankment can gve a fertle base for growth of vegetatve cover / soddng. Bamboo net + plantatons to protect hgh embankment constructon stage Aprl,

45 ECoP-9A Bo-Engneerng 9A.1.1 General: Bo-Engneerng s the use of lvng plants for engneerng purposes. Vegetaton s carefully selected for the functons t can serve n stablsng roadsde slopes and for ts sutablty at ste. Sol boengneerng provdes attractve cost-effectve and envronmentally compatble ways to protect slopes aganst surface eroson and shallow mass movement. 9A.1.2 Ths code of practce envsages the use of Bo-Engneerng technques to be undertaken for protecton of slopes aganst eroson ether alone or n conjuncton wth cvl engneerng structures. It can also help n reducng planer movement, can be used to mprove dranage and reduce slumpng. A holstc approach to boengneerng ncorporates the use of ndvdual dormant un-rooted bundles of branches lve fascnes, dormant unbundled branches brush layerng, and combnatons wth lve transplantng and seedng. 9A.1.3. Normally Bo-engneerng alone s mostly used for relatvely small-scale works, such as armourng bare 9A.1.4 cuts and fll slopes aganst eroson, catchng debrs to reduce dran blockages and so on. They are effectve at depths of up to 500mm below the depth. The Bo-Engneerng technques n conjuncton wth cvl engneerng structures can be desgned for armourng of slopes aganst slope falures. Where the better qualty engneerng soluton s beng sought, desgns that ncorporate bo-engneerng are usually most effectve and the most economc solutons for the shallow-seated problems lsted above. Obvously, the use of bo-engneerng solutons costs more n the short term than do-nothng approach. But n the long term, there should be addtonal benefts from reduced mantenance costs. A lst of technques for stablsng slopes wth cvl and bo-engneerng s enclosed at Annexure 9A-1. Some examples of use of Bo-engneerng are gven below: Scope/ Examples of use of Bo-Engneerng: Preventon of scour around drans and culvert dscharge ponts Preventon of scour around cvl engneerng structures, partcularly at the sol/structure nterface Protecton aganst debrs blockng the sde drans Protecton aganst debrs comng on to the carrageway Protecton of un-compacted spol Protecton of embankments and fll areas Protecton of bare cut slopes How does bo-engneerng work? Bo-engneerng systems work by fulfllng the engneerng functons requred for the protecton and stablzng of slopes. The dfference between revegetaton and boengneerng s that that the plant must provde one or more of the roles of catchng debrs, armourng the surface, renforcng the sol, anchorng the surface layer, supportng the slope or dranng the materal. Ths means servng an engneerng functon. Protecton of bare surfaces on rehabltated land sldes Protecton of slope toes from eroson, where undercuttng and over-steepenng may arse Stablsng of gulles Rehabltaton of quarres and borrow pts Preventon of shallow planer falures less than 0.5 m deep Preventon of shallow slumps less than 0.5 m deep Reducton of mnor falls n weak, shattered rock Reducton of debrs creep on steep, unconsoldated colluval slopes. 9-8

46 In Nepal, bo-engneerng s used more wdely, on account of the extreme terran condtons and the need for low cost technques for the protectng the slopes and shallow-seated falures Brush Packng Lve Fascnes Lve Stakes 9A.2.1 Project Plannng and Desgn: Bo-engneerng works are planned n the same manner as other works. Unstable hll, cut slopes and lkely locaton of unstable/vulnerable stes sldes shall be dentfed on the bass of geologcal nputs and local nformaton about the occurrence of slps. 9A.2.2 The technque of cvl engneerng or bo-engneerng to be adopted shall be based on the hll slope angle as well as the local geology and optmum technque desgned to stablze such unstable slopes. The slope stes can then be dvded nto varous segments and most approprate technque chosen. 9A.2.3 The plannng shall nvolve selecton of the technque of Bo-engneerng approprate to the bophyscal condtons of the regon, ntegraton wth standard cvl engneerng measures, the role of vegetaton, plant speces selecton, propagaton and constructon technques. 9A.2.4 Select the rght speces of plant or shrub for use, n each case, for the ste keepng n vew technque, propagaton and sutablty. 9A.3.1 Pre-constructon Stage: The schedule of mplementaton of bo-engneerng works shall be scheduled precsely n lne wth the season. It should also take nto account the tme taken for vegetaton to become establshed and reach full strength It shall be ensured that the ste have been prepared for plantaton and slopes trmmed to receve the saplngs or grasses. 9A.3.3 Calculate the quanttes of seeds or numbers of saplngs requred for the work and dentfy the source of procurement. 9A.3.4 Work out the requrement of water that may be requred for sprnklng on the newly planted saplngs. 9A.3.5 Identfy the locaton of waste dsposal. 9-9

47 9A.4 Constructon Stage: 9A.4.1 It shall be ensured that all plantng stock s of hgh qualty ad s vgorous enough to grow on the ste to be planted. The plants and cuttng used shall be dsease resstant 9A.4.2 Debrs generated from the clearance operatons shall be deposted only at pre-dentfed waste dsposal locatons.. 9A.4.3 Plantaton shall be scheduled mmedately after the frst ran when there s suffcent mosture and the grasses/saplngs get establshed. These may have to be protected for some tme from grazng cattle or other such factors. It shall also be ensured that the plants do not get dslodged due to other constructon actvtes. The area may need to be fenced tll the plants become establshed. 9A.4.4 It needs to be checked that the work has been completed to a hgh standard and the progress of growth montored. Weedng may be carred out as requred. 9A.5.1 Post Constructon Stage: It also takes tme for the vegetaton to become establshed and reach full strength. It s therefore mportant to ensure that the works have been completed to a hgh standard at the ste and the stes are completely covered wthout any gap. Ths must be verfed at ste before fnalzaton of the contract. 9A1.5.2 The mantenance of bo-engneerng works s a part of the road sde mantenance. Lke other elements of mantenance the contractor would be responsble for routne and preventve mantenance actvtes of all such structures. 9A.5.3 The progress of growth of the plants needs to be montored by the supervsory staff and replantaton carred out to replace any dead stock. 9-10

48 ECoP-10.0 Waste Management 10.1 General Ths code of practce descrbes procedures for handlng, reuse and dsposal of waste materals durng constructon. The waste materals generated can be classfed nto Constructon Waste and Domestc waste. The key actvtes durng project stages where management of wastes s requred and the sgnfcance of the mpacts n the project regons are presented n Table Stages Project Plannng & Desgn Pre-constructon Constructon Post- Constructon Table 10-1: Sgnfcance of Impacts across Project Regons Sgnfcance of Impacts Actvtes Identfcaton of type/ source of waste Identfcaton of dsposal stes Reuse of wastes Decommssonng Uttarakhand J & K Bhar Hlly Areas Impacts not lkely to be sgnfcant Impacts lkely to be sgnfcant Other areas Low hlls Hgh hlls Flood plans Other areas Arunachal Pradesh/ Mzoram Hlls Plateau 10.2 Project Plannng and Desgn Stage As part of DPR preparaton, PIU shall carry out the followng measures Fnalze road desgn and algnment to mnmze waste generaton through balancng of cut and fll operatons rather than algnng the entre road wdth n cuttng and mnmzng excess cuts requrng dsposal. Identfy the type of wastes as well as sources of waste durng constructon and suggest optons for possble reuse. Assess the quantty of cut materal that can be used n constructon of the parkng spaces, passng places and other facltes. In case debrs generated from cuttng n hll areas can not be reused, t may be dsposed off properly. One suggeston s ndcated n Fgure The fgure ndcates constructon of gabon walls on valley sde at rdge locatons to form a trough for waste dsposal. As the rdge locatons usually have streams flowng through, length of ppe provded at the culvert should be extended to let runoff flow out of the dsposal locaton. After fllng up of the dsposal ste, t shall be grassed and sutably vegetated to prevent eroson of the dsposed sol. Examne the possblty of utlzng the hard stones and other cut materals for pavement constructon, retanng or protecton walls, lnng of sde and chute drans, stablzng sub-base, head walls, wng walls parapets etc. 10-1

49 Provde gudelnes to the contractor for locatng waste dsposal stes for non-toxc wastes Identfy locatons, n consultaton wth the communty, to use the waste materal for levelng of playgrounds of vllage schools. Utlzng the cut materal for layng and compactng a cappng layer on full wdth of formaton Identfy exstng landfll stes f avalable for dsposal of toxc materals. Incase no exstng landfll stes are avalable, dentfcaton of landfll ste as well as decommssonng of these ste should be undertaken. Towards ths, dentfy the clearance requrements. Include n the bd document under the Specal Condtons of Contract, a clause statng that all provsons of Envronmental Codes of Practce shall be applcable to the locatons of dsposal of wastes. These shall nclude: ECoP-6.0, Topsol Salvage, Storage and Replacement, ECoP-9.0, Slope Stablty and Eroson Control and ECoP-12.0, Dranage Dsposal stes shall be dentfed at the project plannng stage and the locaton shall be marked on the plans. But t should not restrct the contractor from dsposal of the waste materal at alternate ste after obtanng approval of the competent authorty and wthout any extra nvestment. He s expected to carry out ste protecton measures ncludng toe wall protecton, slope stablzng as may be necessary and to ensure that no leechng of toxc materals take place. No Objecton certfcate from the land owner shall be n place f the land belongs to any ndvdual. The contractor shall also ensure that the debrs do not spll over to the valleys. It shall be ensured that the leachng from the fll, f any, s properly draned and do not cause damage to adjonng propertes or agrcultural felds Pre-constructon Stage The contractor shall dentfy the actvtes durng constructon, that have the potental to generate waste and work out measures for the same n the constructon schedule to be submtted to the PIU. A sequental lstng of the actvtes durng road constructon and the nature of wastes together wth the possble optons for reuse are specfed n Table For the dsposal of excess cut and unsutable non-toxc materals, the contractor shall dentfy the locaton for dsposal n consultaton wth the communty / Gram Sabha. Any toxc materals shall be dsposed n exstng landfll stes that comply wth legslatve requrements. Pror to dsposal of wastes onto prvate/communty land, t shall be the responsblty of the Contractor to obtan a No-objecton Certfcate NOC from the land owner/communty. The format for 10-2