Excavation Job Planning

Transcription

1 Purpse Reference This dcument cntains items t cnsider when develping a jb plan t excavate safely arund undergrund facilities. 49 CFR Damage Preventin Prgram Cmpany permits, jb plans, and prcedures API RP1166 API RP1172 CGA Best Practices (current editin) State laws and regulatins Appendices Appendix: Prcedures and Frms Related Tlbx Tpics Excavatin Mnitring and Observatin Page 1 f 110

2 Intrductin: Operatrs have varius methds r prcedures within their rganizatin that describes r define hw pipeline excavatin prjects shuld be cnducted. Operatrs are respnsible fr implementing cnstructin and excavatin practices that prevent damage t undergrund facilities. CONSIDERATIONS: Review all applicable State and Federal regulatins and Cmpany prcedures Effectively plan ut the excavatin, s it cmplies with all Lcal rdinances, State and Federal regulatins and Cmpany prcedures Verify prper dcumentatin has been btained prir t cnstructin r excavatin (One Call ticket, Operatr Qualificatins, Jb Scpe, Cnstructin/Excavatin Plans, etc.) Survey area t identify and lcate abvegrund and belwgrund structures White line the prpsed cnstructin and excavatin area prir t ne call ntificatins Cnduct prject meetings with stakehlders prir t cnstructin and/r excavatin t discuss prject plans and activities Obtain crssing r encrachment requirements frm stakehlders Lcate undergrund and abvegrund pipeline/structures fr prper placement f heavy equipment Lcate and mark undergrund facilities with temprary markers in respnse t a One Call Assure wners/peratrs f undergrund facilities have lcated and temprarily marked their facilities prir t cnstructin r excavatin activity Evaluate safety risks befre excavating and implement risk mitigatins where applicable Establish cmmunicatin channels with stakehlders abut any changes t the prject, plans, scpe, excavatin activities, equipment changes r schedule Prepare and cmmunicate emergency prcedures fr the site Inspect and mnitr excavatin site Planning: Pipeline peratrs may use a variety f methds t effectively plan an excavatin prject. CONSIDERATIONS: Items t cnsider when develping an excavatin jb plan Establish a Prject Manager t versee and plan the Excavatin prject Verify alignment sheets, prpsed drawings, and any additinal mapping fr rute / prject Crdinate One Call tickets fr the prject Identify what equipment type is necessary t safely perfrm the excavatin prject Page 2 f 110

3 Establish that persnnel shall cmply with the Operatr Qualificatin Prgram where applicable Establish clear rles and respnsibilities f all prject team members (examples: Authrized Representative, Cmpetent Persn, sptter, etc.) respnsible fr mnitring and inspecting the excavatin Evaluate and mitigate all knwn and anticipated risks assciated with prject(s) Establish excavating bundaries and required set-back distances frm utilities in prximity f wrk Establish islatin measures (pt-hling, barriers, permits, etc.) Establish Authrized activities (pt-hling, mechanized equipment, attachments, etc.) When evaluating and mitigating Operatr s Risk assciated with the prject: CONSIDERATIONS: Risk Assessment Cntractr Histry f perfrmance and experience Excavating equipment peratr experience level Lcatin f excavatin Number f Cntractrs and Subcntractrs Inspectin (sil, pipe, equipment, rute, etc.) Envirnmental Review (permits, spills, remediatin, etc.) Types f facilities invlved (active, idle, r abandned) Excavating machine type (size, flat bar vs. tthed bucket, peratr visibility, etc.) Excavatin Type (Pit-type, Trench-type, bre, etc.) Prject Planning Leader/Manager Respnsibilities: The Pipeline Operatr shuld identify apprpriate persnnel t manage the prject wh will be accuntable fr prject planning, site safety, and daily wrk activities. CONSIDERATIONS: Respnsibilities Cmplete a Daily Excavatin Checklist prir t beginning the excavatin Verify all OQ Qualificatins, Permits, and Prcedures are being fllwed Identify when risk levels, islatin measures, and unauthrized activities arise Page 3 f 110

4 TABLE OF APPENDICES 1 APPENDIX A: PROCEDURES AND FORMS PLANNING FOR EXCAVATION AND TRENCHING WORK PROCEDURE EXAMPLE ENGINEERING AND CONSTRUCTION GUIDELINE EXAMPLE EXCAVATING PRESSURIZED LINES AND EXCAVATING NEAR OTHER UTILITIES PROCEDURE LINE EXCAVATION PROCEDURE EXCAVATION STANDARD PROCEDURE EXCAVATION DAMAGE PREVENTION PRACTICES PROCEDURE APPLICATION FOR ENCROACHMENT REVIEW FORM DAILY EXCAVATION CHECKLIST EXAMPLE DAILY EXCAVATION CHECKLIST EXAMPLE DAILY EXCAVATION CHECKLIST EXAMPLE DAILY EXCAVATION CHECKLIST EXAMPLE DAILY EXCAVATION CHECKLIST EXAMPLE DAILY EXCAVATION CHECKLIST EXAMPLE EXCAVATION RISK ASSESSMENT Page 4 f 110

5 1 Appendix A: Prcedures and Frms This appendix cntains cmpany-specific perating practices, frms, checklists, reprts, r ther cmpany practices. The purpse f this infrmatin sharing is t prmte pipeline safety by allwing cmpanies t cnsider a variety f cmpany safety practices that may enhance pipeline safety in apprpriate situatins. API takes n psitin n whether the practices described belw are apprpriate fr any particular pipeline peratr, pipeline facility, r perating cnditin. These examples are nt API Standards r Recmmended Practices (althugh sme examples may incrprate prtins f API Standards r Recmmended Practices). Use f mandatry r advisry terms such as shall, shall nt, must, may, may nt, r similar terms reflect the submitting cmpany s particular practice, and shuld nt be interpreted as necessarily reflecting mandatry r advisable practices by API. 1.1 Planning fr Excavatin and Trenching Wrk Prcedure Example 1. The Cntractr cnducting the excavatin activities: a. Is respnsible fr cmpliance with One Call ntificatin, including any needed updates, as defined by applicable State requirements. Emergency One Call ntificatins shuld nly be made as defined by applicable State One Call law. b. Shall attempt t receive psitive respnse frm all undergrund utilities identified n the One Call ticket(s) and ensure Cmpany assets are identified n the One Call ticket(s). c. Shuld cmplete a secndary sweep f planned excavatin area t identify any unknwn utilities. 2. The Authrized Representative will cmplete sectins 1 and 2 f the Daily Excavatin Checklist prir t beginning the excavatin. Nte: All Cmpany wned and/r perated lines must be marked by the Cmpany t ensure the party perfrming the wrk is aware f all lines in and/r adjacent t the excavatin. 1. All abve grund structures within the bm radius f the excavatin equipment being used must be identified, and prper precautins with respect t lcatin and spacing f equipment are taken: a. A minimum 10 clearance frm electrical equipment is required. b. If the 10 clearance distance cannt be maintained, arrangements must be made with the utility prvider t cut the pwer r prvide alternative means t prtect the line frm incidental cntact. 2. Any undergrund vessel r ther structure ftings shuld be lcated and identified t avid damage during the excavatin wrk activities. Page 5 f 110

6 3. Alignment Sheets r ther drawings will be reviewed t verify if knwn appurtenances such as stpple fittings, purge r equalizatin fittings, r ther cnnectins are in clse prximity n any undergrund piping being excavated. 4. Pipeline Cntrl Center (when applicable) will be ntified and asked t mnitr the pipeline system during the excavatin. 5. All cntract persnnel must be apprved under the Operatr Qualificatin Prgram fr the wrk assigned when the line is under the jurisdictin f DOT r a State regulatry agency. 6. Prir t any digging, the area f excavatin is prbed (r hydr-excavated) in a pattern extending at least 12 beynd the intended perimeter f the trench/hle: a. At the discretin f the Cmpany Operatins Supervisr r Authrized Representative, hand digging r hydr-excavatin may be required t btain visual verificatin f the line identified during the prbing prcess befre any mechanical digging is cmmenced. b. All Cmpany assets must be marked as designated in the line lcating prcedure. Nte: All excavatins must be in cmpliance with 29 CFR 1926, Subpart P Mechanical Excavatin 1. When sil cnditins permit, all backhe buckets used by cntractrs fr excavatin near existing facilities r equipment must have a safety bar acrss the teeth t prevent line snagging that may cause damage t line and/r catings. a. In additin, side-cutters may need t be remved frm the bucket if sil cnditins permit. 2. The Cmpany Operatins Supervisr r designated emplyee must apprve: a. The use f teeth and/r side-cutters n backhe buckets. 3. The use f handheld mechanical devices such as jackhammers and chipping guns. a. N track-he with a hydraulic excavatr will be allwed t be used n any prject r excavatin jb with quick-cnnect cuplers unless the excavatr has been retrfitted t allw the safety pin t be manually inserted behind the frnt and/r rear lever f the cupler assembly. 4. The Inspectr and Operatins Supervisr r Authrized Representative n the jb site will inspect all equipment with hydraulic excavatrs befre excavatin wrk cmmences t ensure that the safety pin has been prperly inserted behind either the frnt r rear lcking lever. a. Any peratinal and/r mechanical failure f the excavatin equipment is immediately crrected, r the equipment is taken ut f service r replaced. Page 6 f 110

7 5. Inspectins f the equipment, prir t perating, are the respnsibility f the equipment wner/peratr and are dne daily and in accrdance with OSHA requirements. 6. Alternative excavatin methds are required fr the fllwing cnditins: a. Rcky sil cnditins when determining the exact depth and lcatin f a line; OR b. Multiple lines exist in clse prximity t each ther; OR c. Knwn freign crssings are present. 7. These cnditins and situatins create a risk f line damage in using the cnventinal excavatin equipment and require the applicatin f the fllwing methds: a. Excavating parallel t the pipeline(s) frm a lcatin upstream r dwnstream where centerline and depth f cver can be psitively verified; b. Pt hling the area f activity with hydr-excavatin equipment; and c. Hand digging. 8. In sme cases, the cmbinatin f ne r mre f the listed techniques may be used in cnjunctin with cnventinal excavatin equipment. This must be reviewed and apprved by the Authrized Representative. 9. When excavating pipeline(s) fr any type f freign pipeline crssing, maintenance r inspectin activity, the excavatin is dne parallel t the existing pipeline(s). a. Digging perpendicular t the pipeline is prhibited until the line is expsed Tlerance Zne 1. Tlerance Zne is defined as a minimum f 18 frm the uter edge f the pipe (in all directins), r as defined by State regulatins, whichever is greater. 2. Mechanical excavatin equipment used t remve material surrunding a Cmpany pipeline must maintain a minimum buffer f at least 18, r as defined by State regulatins, whichever is greater, between the excavatin equipment and the circumference f the pipeline(s). 3. Nnmechanical excavatin equipment (hydr vacuum, hand tls, water jet) may be used within the tlerance zne at any time Mechanical Excavatin within the Tlerance Zne Mechanical excavatin within the Tlerance Zne f energized undergrund pipelines presents additinal risks that must be addressed. As such, ther reasnable alternatives must be reviewed during the Jb Planning prcess, including lwering the line pressure and/r taking the pipeline ut f service during the excavatin activities. Mechanical Excavatin within the Cmpany s defined tlerance zne f in-service pipelines may be allwed nly if all f the fllwing cnditins have been met: Page 7 f 110

8 1. Prject Manager, Field Engineering r Operatins must develp a written Jb Plan that clearly identifies the mechanical equipment type(s), including the use f special attachments (i.e., hammer hes, tampers, augers, etc.). a. Special attachments, including any part f the pwered equipment, may nt be used within 6 f any in-service undergrund pipeline r facility. b. The use f hammer hes, r similar attachments, within the tlerance zne f energized undergrund pipelines, shall be limited t Integrity rehab prjects where it is necessary t prvide clearance t prperly inspect and repair anmalies r where stpples must be installed with the pipeline in-service. Other activities may require a Variance. 2. The pipeline(s) must be free f buried side taps, split tees, r ther buried appurtenances in the area being excavated. The mst recent Internal In-Line Inspectin (ILI) run and Alignment Sheets, fr the pipeline(s) t be excavated, must be reviewed by Field Engineering, Operatins r Pipeline Integrity t identify all PI s, taps, r ther buried appurtenances: a. If any buried side taps, split tees r appurtenances exist r ptentially exist, n mechanical equipment can be used inside the tlerance zne. b. If n pipeline data r drawings exist, n mechanical equipment can be used inside the tlerance zne. 3. A Cmpany representative r Inspectr must ntify the lcal Operatins Supervisr and Pipeline Cntrl Center prir t the Excavatr cmmencing the prject. 4. The Excavatr shall exercise all necessary reasnable care t prtect the pipeline in r near the excavatin area. a. Excavatrs shall maintain a minimum f 6 f clearance between the pipeline and lcatin f the hydraulic arm and any attachments (nt just the end r tip f the bucket, hammer he, tamping r ther device). Nte: Mechanical excavatin inside the tlerance zne f in-service pipelines shuld nly be perfrmed by an experienced equipment peratr wh is prficient with the equipment and attachment(s) being used. 1. Mechanical excavatin is allwed at a prescribed distance per state requirements, frm the tp f pipe (TOP). 2. Once within the prescribed distance per state requirements, the TOP must be expsed via hand digging r vacuum excavatin until the TOP is cntinuusly expsed and sides f pipe identified via prbe bar(s). 3. If it has been determined, there are n buried side taps, split tees r ther buried bjects n the pipeline(s), then with the TOP expsed, and sides f pipeline identified via prbe bars, mechanical excavatin can begin t within 6 f the uter edge f the pipeline(s). Page 8 f 110

9 4. The remaining 6 f sil must be remved via hand digging r vacuum excavatin Cmpetent Persn 1. A designated Cmpetent Persn is respnsible fr each excavatin when the excavatin is t be entered by wrkers. 2. The cntractr is accuntable fr designating the qualified Cmpetent Persn fr the jb. 3. The Cmpetent Persn is respnsible fr: a. Cnducting sil testing by a visual and a manual methd t determine the prtective system(s) t be used in the excavatin and dcumenting the results; b. Remval f emplyees frm the hazardus area where evidence f pssible cave-in, failure f prtective systems, hazardus atmspheres, r ther hazardus cnditins exists; c. Cmpleting the designated prtin f the Daily Excavatin Checklist frm and maintaining the dcumentatin at the wrk site; and d. Identifying hazards and taking prmpt crrective measures t eliminate identified and predictable hazards which endanger excavatin entrants. 4. The Cmpetent Persn will have and be able t demnstrate the fllwing: Training, experience, knwledge f sil analysis; use f prtective systems; and requirements f 29 CFR Part 1926, Subpart P. a. The Cmpetent Persn certificate f training will be cmpleted, retained and available fr review by an Authrized Representative upn request Daily Inspectin 1. The Cmpetent Persn shall make daily inspectins f excavatins that will be entered by persnnel, the adjacent areas, and prtective systems fr evidence f a situatin that culd result in pssible cave-ins, indicatins f failure f prtective systems, hazardus atmspheres, r ther hazardus cnditins. The Cmpetent Persn shall dcument the daily inspectins in the Daily Excavatin Checklist. a. An inspectin shall be cnducted prir t the start f wrk and as needed thrughut the shift. b. Inspectins shall als be made after every rainstrm r ther hazard increasing ccurrence. 2. If the Cmpetent Persn finds evidence f a situatin that culd result in a pssible cave-in, indicatins f failure f prtective systems, hazardus atmspheres, r ther hazardus cnditins, expsed emplyees will be remved frm the area until the necessary precautins have been taken t ensure their safety. Page 9 f 110

10 1.2 Engineering and Cnstructin Guideline Example Engineering Guidelines 1. OPERATOR cnstructs, repairs, perates and maintains its pipelines in cmpliance with current U.S. Department f Transprtatin (DOT) regulatins, industry and cmpany standards fr safe peratins. Shuld Encraching Party prpse plans that infringe n OPERATOR s rights r affect OPERATOR s ability t meet these requirements, mdificatins t the pipeline r plans will be required. The cst f all such mdificatins shall be brne by the Encraching Party. The fllwing guidelines apply t Encraching Party and any cntractrs, agents and r representatives it uses fr cnstructin activities cnducted in OPERATOR s right-f-way and /r affecting OPERATOR s pipelines: 2. In rder t maintain immediate and unimpeded access t the pipeline, n trees, shrubs, permanent structures (i.e., buildings, decks, sheds, swimming pls, inlets, drainage structures, hydrants, ples, etc.) bdies f water shall be placed within the pipeline right f way. 3. The depth f earth cver ver the pipelines shall be maintained and never changed in any manner withut the express written cnsent f OPERATOR. In sme cases, additinal cver may be required. 4. In areas where the pipeline currently has less than three feet (3 ) f cver, n grade cuts will be allwed. Cver ver the pipeline shall be increased t a minimum f three (3) feet if there are prpsed "imprvements" ver the pipeline r within the pipeline right-fway. Prpsed rad crssings have additinal requirements. 5. Prpsed grading which will place the pipeline at depths greater than seven feet (7 ) shall require an OPERATOR Engineering Department written apprval. 6. In areas where buildings are prpsed within fifty feet (50 ) f the pipeline facility, vertical cver ver the pipeline shuld be increased t a minimum f fur feet (4 ), maximum f seven feet (7 ). 7. The creatin f steep slpes within the pipeline right f way that will hinder access and maintenance shall be avided. Maximum slpe f 5 t 1 within the ROW. 8. The creatin f strmwater utfalls r ther water management cntrls which wuld make the pipeline right-f-way mre susceptible t ersin shall be avided r mitigated. Prpsed gabins and rip rap structures must adhere t the vertical ne ft (1 ) vertical clearance requirement. Getextile prtectin may als be required. 9. Drainage swales shall maintain a minimum f three feet (3 ) f vertical clearance between the O.D. f the pipeline and the bttm f the swale. Additinal prtectin may be required in rder t minimize ersin susceptibility ver the existing pipeline and acrss its assciated right f way. Page 10 f 110

11 10. N fences will be allwed n the ROW withut OPERATOR s prir written apprval. Fences shall be easily remvable and nt t bstruct the view f the ROW fr inspectin purpses. N Masnry, brick, r stne fences will be allwed. Fences that are perpendicular t the pipeline(s) shall include a gate sixteen feet (16 ) in width fr equipment t pass thrugh. Fence psts shall nt be placed within 5 feet f the pipeline(s). Fences that are parallel t the pipeline(s) shall be lcated utside the pipeline s ROW. 11. Prpsed residential driveway crssings shall be designed t prvide a minimum f three feet (3 ) (maximum f 7 feet) f vertical clearance between the O.D. f the pipeline and the finished surface. Exceptins must be apprved by OPERATOR s Engineering Department 12. Prpsed driveway/rad crssings shuld be designed t be as perpendicular t the pipeline as pssible. Prpsed crssings f angles less than 30 degrees will nt be accepted. 13. Prpsed cmmercial entrance crssings shall be designed t prvide a minimum f fur feet (4 ), maximum f seven feet (7 ) f vertical clearance between the O.D. f the pipeline and the finished surface. 14. Prpsed rad ditches shall be designed t prvide a minimum f three feet (3 ) (maximum f 7 feet) f vertical cver abve the tp f the pipeline and the bttm f the ditch. 15. Rad underdrains shall maintain a tw ft (2 ) r greater minimum vertical clearance frm the tp f the pipeline. 16. Cnstructin f parking lts ver the pipeline(s) shall nt be permitted withut OPERATOR s prir written apprval in an Encrachment Agreement releasing OPERATOR frm any and all future damages t the parking lt due t pipeline maintenance and repair. 17. Structures such as guide rails, cncrete paving, sidewalks, curbing, etc. shall be designed in a manner that wuld facilitate their remval in the event f pipeline maintenance r an emergency repair. 18. Prpsed crssings by utilities r undergrund structures shall be designed t pass under the pipeline unless therwise apprved by OPERATOR s Engineering Department. 19. Prpsed utilities shall crss as perpendicular t the pipeline as pssible. 20. All undergrund facilities r structures crssing the pipeline shall maintain a tw ft (2 ) minimum vertical clearance between the O.D. f the pipeline and the prpsed utility structure. 21. Utility crssings f the pipeline shall be shwn n prfile with field verified pipeline depths and prpsed clearances clearly labeled. Page 11 f 110

12 1.2.2 Pwer Cable Installatins 1. Secndary Crssings (less than 440 Vlts): a. Must be installed UNDER the pipeline, (unless therwise apprved by OPERATOR s Engineering Department), prvided the tw-ft (2') minimum vertical clearance is maintained between the bttm f the pipeline and the tp f the cnduit. The cable must be placed in cnduit fr the width f the right-f-way, and a drive pst with an electric cmpany marker shall be placed n each side f the pipeline rightf-way. 2. Primary Crssings (greater than 440 vlts): a. Must be installed UNDER the pipeline, (unless therwise apprved by OPERATOR s Engineering Department), with a minimum tw-ft-six-inch (2 6 ) vertical clearance between the pipeline O.D. and the tp f the cnduit. The cable shall be placed in cnduit fr the width f the pipeline right-f-way. The cnduit shall be prtected by puring f 2000 psi cncrete, dyed red, int the ditch fr a minimum distance f five feet (5 ) n bth sides f the pipeline. The cncrete must span the width f the ditch. A minimum tw-ft (2') vertical clearance must be maintained between the O.D. f the pipeline and the tp f the cncrete. b. Fr all electrical crssings, a drive pst with an electric cmpany marker shall be placed and maintained n each side f the pipeline right-f-way Open Trench Fiber Optic Mainline Cable Installatins 1. The cable must be installed UNDER the pipeline with a minimum tw-ft-six-inch (2 6 ) vertical clearance between the bttm f the pipeline O.D. and the tp f the fiber ptic cable. 2. Fiber ptic cables must be encased in six inches (6") f cncrete, dyed range, fr a minimum distance f five feet (5') n bth sides f the pipeline. The cncrete must span the width f the ditch. 3. Fiber ptic cmpany markers must be installed and maintained at the crssing lcatin n bth sides f the pipeline right-f-way. 4. Fr bred r HDD installatins see OPERATOR Cnstructin Guidelines Cathdic Prtectin: 1. Cathdic prtectin is emplyed t cntrl crrsin n OPERATOR pipelines and ther facilities. Cathdic prtectin may have a detrimental (interference) effect n adjacent and crssing metallic structures. 2. Pssible detrimental cathdic prtectin effects shuld be evaluated by the wner/develper with apprpriate mitigative actins taken if these effects are fund t be an issue fr the wner/develper facility. Mitigatin f detrimental effects frm cathdic prtectin is pssible by using nn-metallic structure materials, lse barrier Page 12 f 110

13 catings, bnded catings and/r bnded catings with cathdic prtectin. Hwever, it is best t cnsult with thse knwledgeable in the field f cathdic prtectin and cathdic prtectin interference mitigatin t determine what is best fr the wner/develper structure and cnfiguratin 3. If cathdic prtectin is planned fr the wner/develper structure, the OPERATOR One Call Engineering Department must be ntified t allw ur crrsin cntrl persnnel t install apprpriate test facilities and evaluate pssible detrimental cathdic prtectin effects n the OPERATOR facilities Prpsed Residential Develpment 1. Submit a full set f plans, including detail sheets, whereby OPERATOR s easement is depicted thrugh the prpsed develpment. 2. Prpsed residential layut shall be designed nt t impede access alng the OPERATOR right f way. 3. Designated equipment crssing lcatins must be identified, and prir t cnstructin, a list f equipment types and weights must be supplied s that stress calculatins can be cmpleted t ascertain what type f prtectin ver the pipeline right f way will be required t allw the crssings. 4. Prpsed landscaping, utilities, drainage, grading and radways and means f excavatin, cmpactin, blasting, and rck remval within the develpment must cmply with all restrictins stated in this dcument 5. Encraching Party shall incrprate OPERATOR s Engineering and Cnstructin Guidelines cntained, herein, int any f the Encraching Parties design and cnstructin drawings issued FOR BID purpse. All plan drawings issued either FOR BID r Fr Cnstructin will display the fllwing statement n the drawings in areas arund OPERATOR s pipeline(s). Page 13 f 110

14 1.2.6 Cnstructin Guidelines The fllwing guidelines apply t Encraching Party and any cntractrs, agents and r representatives it uses fr cnstructin activities cnducted in OPERATOR s right-f-way and/r affecting OPERATOR s pipeline(s). 1. State Law requires cntractr and excavatin cmpanies cntact the State One Call Center, prir t any excavatin activity as required by yur State Law. The natinwide telephne number fr the State One Call Center is Encraching Party shall cnduct their activities in cmpliance with OPERATOR s Cnstructin/Design Guidelines as well as any applicable agreement in place with Encraching Party 3. The cntinued integrity f OPERATOR s pipelines and the safety f all individuals in the area f prpsed wrk are f the utmst imprtance. Therefre, Encraching Party shall meet with OPERATOR s peratins and emergency representatives prir t cnstructin. OPERATOR s n-site representative shall require discntinuatin f any wrk that, in their pinin, endangers the peratin r safety f persnnel, pipelines, r facilities. 4. Ntificatin shall be given t OPERATOR at least 10 days befre the start f cnstructin. A schedule f activities fr the duratin f the prject shall be made available at that time t facilitate the scheduling f OPERATOR s wrk site representative. Any Encraching Party schedule changes shall be prvided t OPERATOR immediately. 5. Encraching Party shall nt cmmence wrk within OPERATOR s right f way r within twenty-five feet f an OPERATOR pipeline r appurtenance(s) withut an OPERATOR representative being present. 6. N cnstructin equipment will be allwed n the right f way unless apprval t d s has been btained frm OPERATOR and the apprpriate prtectin has been put in place t prtect the pipeline and its right f way. 7. During installatin f undergrund utilities r facilities that will utilize drilling, bring, r HDD the fllwing must be adhered t: a. Pt hle and expse the pipeline(s) t verify depth with a hydr-vacuum machine (with and OPERATOR representative n site). b. Excavatin f the bring and receiving pits shall be utside the right f way. c. Each bre t be a minimum f three (3 ) frm the bttm f the pipeline t tp f prpsed utility. d. Fr HDD installatin the cmpleted drilled bre shall be a minimum f five feet (5 ) belw the bttm f the pipeline(s). e. Each bre shall crss existing pipeline as clse t perpendicular (90 degrees) as pssible. Page 14 f 110

15 f. During pilt hle bring prcedure, the bring subcntractr is t be aware f the depth f the bring bit head as it passes under the pipeline with metal detectr type device. g. Bre shall extend the entire width f the pipeline right f way. h. Backfill and cmpact pt hle and bre pits. i. Install abve grund cable markers at each side f the ROW/easement. j. The bring prfile is t be available t OPERATOR upn request. 8. N Nn-Explsive seismic testing r cnstructin equipment with steady state vibratr, intermittent vibratr, r thumper surces shall be cnducted within 150 feet f OPERATOR s pipeline withut OPERATOR written apprval. 9. N blasting shall be allwed within 300 feet f OPERATOR s facilities withut a blast plan review by OPERATOR and written apprval. Ntificatin f blasting shall be given t OPERATOR including a cmplete blasting plan. At a minimum, the blasting plan shall include a drawing with blast pattern, distance frm rientatin with respect t the pipeline. It must include spacing between hles, rws, amunt f explsives in each hle, manufacturer, and assciated energy release rati. A pre-blast meeting shall be cnducted by the rganizatin respnsible fr blasting. OPERATOR requires a signed and executed blasting indemnificatin agreement befre authrized permissin t blast can be given. A written emergency plan shall be prvided by the rganizatin respnsible fr blasting. 10. N materials r equipment are t be stred within the existing pipeline right-f-way withut OPERATOR s prir written apprval. 11. N leach beds, wells, cesspls r sewer systems will be permitted within the OPERATOR ROW. 12. An OPERATOR inspectr must be n site during any wrk within the pipeline right-f-way. Nte: CONTACTING OPERATOR DIRECTLY DOES NOT EXONERATE YOU OF THE LEGAL OBLIGATION TO NOTIFY YOUR STATE ONE CALL CENTER. PLEASE CALL 811 BEFORE YOU DIG! Additinal questins can be submitted t OPERATOR by calling the OPERATOR Design Review Team at xxx-xxx-xxxx r xxx-xxxx, Yu can als cntact lcal OPERATOR field representatives at the fllwing numbers fr Line lcates and depth verificatins. xxx-xxx-xxxx r xxx-xxxx Page 15 f 110

16 1.3 Excavating Pressurized Lines and Excavating Near Other Utilities Prcedure Operatr Initiated and Third Party Excavatin Activities 1. Befre pwer excavatin within 24 (610mm) f the pipeline, r as specified by state law, whichever is mre stringent, the line must be psitively lcated with a water prbe; prbe rde, vacuum truck r expsed by hand. If a prbe rd must be used, inspecting the cating in the excavated area is required, and any damaged areas must be repaired befre backfilling. DO NOT lcate pressurized lines using pwer equipment. 2. Pwer Equipment excavatin shuld be dne parallel t the pipeline unless right-f-way cngestin prevents adequately psitining excavating equipment. Digging acrss the line with pwer equipment shuld be avided wherever pssible. 3. Once the pipeline is expsed, n pwer equipment shall dig clser than 24 (610mm) r as specified by state law, whichever is mre stringent, t any pint n the circumference f the pipeline and prbing shall be dne during excavatin. A sptter will wrk with the equipment peratr t ensure the pipeline r cating is nt damaged. Reprt any damage t the pipeline t the Operatr supervisr immediately. Page 16 f 110

17 1.4 Line Excavatin Prcedure Purpse/Scpe The purpse f this prcedure is t define the specific requirements fr pipeline prtectin when cnducting excavatins in clse prximity t OPERATOR pipelines. The user may als refer t OPERATOR Engineering and Cnstructin Guidelines fr Wrking Near Operatr Right f Way, Pipelines, and Facilities. General, as well as, general Excavatin Safety Requirements fund in OPERATOR HES Prcedure. This cntrlled prcedure applies t all Operatr Partners units and facilities Definitins Excavatin Any man-made cut, trench r depressin in the earth s surface, frmed by earth remval. Trench A narrw excavatin belw the surface f the grund, less than 15 ft. wide, with a depth usually greater than the width General Nte Befre any excavatin begins, utilize the apprpriate state One Call system t determine the lcatin f utility installatins (i.e., sewer, telephne, fuel, electric, r any ther undergrund installatins) that may be encuntered. 1. All excavatins must be cnducted with strict adherence t the OPERATOR s Operatr Qualificatin (OQ) Prgram, the Excavatin Safety Requirements identified in the HES Prcedure, and all Federal, State, Lcal, and OSHA requirements. 2. Excavatins that invlve expsing f a pipeline must emply the use f a tthless bucket; slid bar welded t bucket digging teeth, r plastic bucket t mitigate the ptential f pipeline damage. Hydrvac excavatin is an ptin. In all cases, a digging sptter is required. 3. Each OPERATOR representative n an excavatin site is respnsible fr taking apprpriate actins t ensure the safety f the public, prtectin f the envirnment, and the integrity f the pipeline. Such actins may include but are nt limited t the fllwing: shutting dwn the excavatin, shutting dwn the pipeline peratin, r making the apprpriate ntificatins Key Respnsibilities The Supervisr r designee is respnsible fr ensuring cmpliance with this prcedure and the Excavatin Safety Requirements (see HES Prcedure Excavatin Safety Prgram, & Cmpetent Persn Daily Excavatin Check List) fr all excavatins that ccur within their area f respnsibility. Page 17 f 110

18 1.4.5 Prcedure/Prcess 1. OPERATOR Perfrmed Line Lcate and Excavatin Prcess - All excavatins f OPERATOR DOT-regulated pipelines shall be recrded n a Maintenance Recrd Frm. All OPERATOR excavatins (including lcatin by pt-hling) shall be cnducted in the fllwing manner: a. Prir t excavatin, clearly mark the area t be excavated per OPERATOR Prcedure, Perfrming Line Lcates and ntify the apprpriate One Call agency f planned excavatin activities per lcal requirements. Marking requirements (methd and clr f markings) and the One Call ntificatin requirements (timing and infrmatin) vary by state. b. Ensure all utilities and knwn appurtenances are prperly marked by the wner r lcated by the cntractr and marked fr exact lcatin prir t the excavatin. i. Visually survey prperty and sectin lines fr the presence f nnreprted utilities. ii. iii. Review available infrmatin n the excavatin site t identify nn-reprted utilities and pipeline appurtenances. Pssible surces f infrmatin include alignment drawings (i.e., updated cnstructin drawings, cunty maps, plat maps, etc.), Decisin Supprt System (DSS), inline inspectin data, and histrical One Calls. Cnsider utilizatin f line lcatr t scan the excavatin site in all directins frm the centerline f the pipeline t identify pssible undergrund structures. c. The utmst care will be given t all utilities during excavatin and the maintenance f the pipeline. i. Identify/Develp a plan t excavate adjacent utilities and prvide apprpriate supprt t third party structures. ii. Crdinate excavatin wrk with invlved third party utilities and r cntractrs d. Acquire frm a Cmpany representative any specific third party crssing requirements. e. Perfrm Site Evaluatin nting all ptential hazards and develp an actin plan t eliminate ptential danger (Hazard Assessment). Cnduct a detailed dcumented Pre-Jb Safety Meeting and cmplete the Excavatin Wrk Permit. f. Ntify the Cntrl Center f the lcatin and type f wrk being perfrmed and, if necessary per Technical Prcedure ensure that the apprpriate pressure restrictin has been implemented prir t the excavatin f an Immediate Repair Cnditin as defined in Operatr Prcedure. Page 18 f 110

19 g. Excavatin Observer: The excavatr is required t have an bserver t assist the equipment peratr when perating equipment arund knwn undergrund facilities. h. Cmpany r cntract persnnel will prbe all OPERATOR pipelines within the ROW fr exact depth and lcatin prir t excavatin. This will be achieved by using an Insulated Metal Sil Prbe equipped with a blunt r ball nse prbe bar tip (ex: Mighty Prbe make r equal) t prtect individuals frm undergrund electrical ptential. Cmpany r cntract persnnel shall use extreme care during prbing t nt damage the pipeline prtective cating. After lcating the exact depth f the pipeline, the prbes (a minimum f tw prbe bars per lcatin required) will be ffset t a minimum f ne ft frm the pipeline. These prbes will be placed t the side f the line that the peratr intends t dig n (this will allw the peratr t view the angle that the pipeline is running). i. Additinal Excavatin Safety Requirements that shuld be cnsidered include Cmpetent Persn Requirements, prper slping and benching, and the need fr trench bxes. j. The peratr will cmmence digging t the side f the pipeline (maintaining an 18- inch distance until the pipeline has been expsed) until reaching a depth f tw feet belw the bttm f the pipeline. N machine wrk permitted within 18 inches f the pipeline. k. The peratr may use the back f the digging bucket (nly if deemed safe by the cmpany representative r inspectin persnnel) t crumb the sil ff the tp f the pipeline (crumbing can ccur n clser than 12-inches abve the pipeline). l. Cmpany r cntract persnnel shall remve the remaining sil (expsing pipe) by means f a shvel r ther apprved means, such as hydrvac. m. Once the pipeline is clearly visible, the excavatin f the pipeline using an excavatr may cntinue. The peratr shall exercise extreme care within the 18-inch tlerance zne fr prtectin f the pipeline and undergrund utilities at r near excavatin area. n. Under n circumstances shall the peratr be allwed t align the center f the excavatr ver the center f the pipeline. The excavatr will be aligned in such a manner that the bm f the excavatr will push straight dwn the lng axis f the pipeline maintaining a minimum f ne-ft distance frm the pipeline. If the depth f the pipeline is shallw, cnsideratin shall be given t the lad distributin ver the pipeline and the need fr ramping r plating.. At any excavatin site, all OSHA r State required equipment will be maintained. 2. Third Party Excavatins Near OPERATOR Pipelines - N third party excavatins f OPERATOR s pipelines shall be initiated until OPERATOR pipelines have been marked per the Perfrming Line Lcates prcedure. N excavatin wrk shall be cnducted within 25 feet f OPERATOR pipelines withut an OPERATOR inspectr present. The fllwing limits Page 19 f 110

20 shall be bserved n excavatins near OPERATOR pipeline where the pipeline is nt expsed and where an OPERATOR inspectr is present t versee wrk. Exemptins frm the belw standard may be granted frm Operatins r Engineering n a case by case basis (e.g., shared ROW). a. Plws, Trenchers, and Bulldzer rippers n clser than 10-feet. b. Track Hes and Augers n clser than 5-feet. c. Rubber Tired Backhes n clser than 3-feet. d. Hand dig nly within 3-feet. (Use f alternate digging methds may be utilized if reviewed and apprved by an nsite Cmpany Representative, and wrk is mnitred during digging). 3. OPERATOR Field Guidance Requirements fr Freign Line Crssings f OPERATOR Pipelines(s) The fllwing requirements shall be met unless an alternative is apprved and dcumented by OPERATOR Engineering Department r the Regin/District Manager. 4. All crssings handled under these rules shall be dcumented utilizing the prper OPERATOR Maintenance Frm, a cpy f which shall be attached t the apprpriate One Call ticket in the One Call Ticket Management system. The Excavatr/Lcatr Orientatin dcument shall als be cmpleted and executed by the encraching party and a cpy attached t the apprpriate One Call ticket in the Ticket Management System. 5. Refer t the Engineering and Cnstructin Guidelines fr an example f wrking near the OPERATOR. Right-f-Way, Pipeline, and Facilities. Nte: Any prpsed freign crssings that cannt meet the minimum requirements stated belw r any prpsed cnstructin that requires encrachment int the OPERATOR Pipeline Easement r near OPERATOR Pipeline(s) must fllw the prcess as utlined in Operatr Prcedure Review Prcess fr Third Party Planned Excavatins. Apprval frm OPERATOR Engineering is required alng with written permissin frm the OPERATOR Right f Way Department prir t the start f any wrk within the OPERATOR Easement. Reference OPERATOR General Restrictins (ENGINEERING AND CONSTRUCTION GUIDELINES) fr wrking in Pipeline Right f Way fr additinal infrmatin Pipeline Crssings 1. All freign line crssings must crss belw OPERATOR pipeline(s) and must adhere t the required minimum f 24 inches (2 ft.) f separatin frm the bttm f the OPERATOR Pipeline(s) and the tp f the crssing entity. 2. An OPERATOR representative must be n site fr all wrk that will take place within the OPERATOR pipeline easement. Excavatin methd t meet OPERATOR requirements. 3. Depth verificatins shall be cmpleted prir t any allwed crssing(s) t ensure that the tw-ft (2 ) required clearance can be met during cnstructin. Pt-hling may be required at cntractr s expense. Page 20 f 110

21 4. The OPERATOR pipeline(s) must be expsed during cnstructin t ensure the required tw-ft (2 ) clearance is maintained while the crssing utility is installed 5. The prpsed crssings must be designed t be as perpendicular t the pipeline(s) as pssible. Prpsed crssings f angles less than 30 degrees will nt be accepted Pwer Cable Installatins (See Engineering Guidelines) 1. Secndary crssings (less than 440 vlts) must be installed with the required tw-ft (2 ) minimum clearance, placed in cnduit r cncrete fr the width f the right-f-way and a drive pst with an electric cmpany marker installed n each side f the pipeline right f way t identify the crssing. 2. Primary crssings (greater than 440 vlts) shall be installed with a minimum clearance f tw-ft-six-inch (2 6 ), placed in cnduit fr the width f the right- f-way and prtected by puring 2000psi cncrete, dyed red, int the ditch fr a minimum distance f five feet (5 ) n bth sides f the pipeline. The cncrete must span the width f the ditch. A minimum tw-ft (2 ) vertical clearance must be maintained between the O.D. f the pipeline and the tp f the cncrete. Electric cmpany marker must be installed n each side f the pipeline right f way t identify the crssing Fiber Optic Open Trench Installatins (See Engineering Guidelines) 1. The cable must be installed UNDER the pipeline with a minimum tw-ft-six inch (2 6 ) vertical clearance between the pipeline O.D. and the tp f the fiber ptic cable. 2. Fiber ptic cables must be encased in six inches (6") f cncrete, dyed range, fr a minimum distance f five feet (5') n bth sides f the pipeline. The cncrete must span the width f the ditch. 3. Fiber ptic cmpany markers must be installed and maintained at the crssing lcatin n bth sides f the pipeline right-f-way Fiber Optic Installatin by Methd f Drilling r HDD (See Cnstructin Guidelines) 1. Pt hle and expse the pipeline(s) t verify depth with the hydr-vacuum machine (with an OPERATOR representative n site). 2. Excavate n the utside, each side, f pipeline Right-f-Way fr bring and receiving pits. 3. Bre the hle fr the prpsed utility under the pipeline. 4. Each bre t be a minimum f three feet (3 ) frm the bttm f the pipeline t tp f prpsed utility. Fr HDD installatin the cmpleted drilled bre shall be a minimum f five feet (5 ) belw the bttm f the pipeline(s). 5. Each bre shall crss existing pipeline as clse t perpendicular (90 degrees) as pssible. 6. During pilt hle bring prcedure, the bring subcntractr is t be aware f the depth f the bring bit head as it passes under the pipeline with metal detectr type device. 7. Bre shall extend the entire width f the pipeline ROW/easement. Page 21 f 110

22 8. Backfill and cmpact pt hle and bre pits. 9. Install permanent abve grund cable markers at each side f the ROW/easement. 10. The bring prfile is t be available OPERATOR upn request Cathdic Prtectin All pipeline crssings that utilize a cathdic prtectin system must be evaluated by the OPERATOR Crrsin Cntrl Department. Ntify the apprpriate Crrsin Cntrl Department Representative t determine if test leads are required t evaluate ptential interference with the OPERATOR system Verbal Apprval by OPERATOR Field Techs- (Hme Owner Utilities) On ccasin, verbal apprval may be prvided fr the crssing f hmewner utilities abve the pipeline by OPERATOR Field Techs. These exceptins t the Engineering Guidelines must be dcumented and filed n the prper OPERATOR Maintenance Frm Ethane Pipelines- Refer t the OPERATOR Ethane Manual fr special cnsideratins related t excavatins arund Ethane piping Required Clearance 24 The encraching entity may nt be able t adhere t the General Restrictins (Engineering and Cnstructin Guidelines) f 24 belw existing pipe due t existing undergrund utilities r unfreseen bstacles. Any variatin f ruting must be dcumented n the apprpriate Maintenance Recrd frm and redlined n the alignment sheets r facility drawings fr final update submittal. Expsed Pipeline Supprt Expsed pipeline must be supprted if the excavatin exceeds a certain length. Un-supprted expsed pipe length varies based n pipe diameter and weld type. Refer t Attachment B fr the maximum limits a pipeline can be expsed withut supplemental supprts. Acetylene Welds - The supprt guidelines listed in Attachment B d nt apply fr acetylene-welded lines. Acetylene welds shuld always be fully supprted hrizntally and vertically during excavatin. A planned excavatin lnger than 5- feet n an acetylene welded line shuld be brught t the attentin f Engineering and/r the Area Maintenance Supervisr. When acetylene welds are expsed, weld-wraps shall be installed per the OPERATOR Welding Manual (reference listing f identified acetylene welded OPERATOR pipelines). Care shall be taken t ensure n deflectin ccurs in an acetylene weld 1. Pipeline Inspectin - Expsed pipe must be inspected prir t backfill. Guidelines fr the pipe inspectin are utlined in Operatr Prcedure. Page 22 f 110

23 2. Cating Requirements If the external cating is damaged r remved, the external surface f the pipeline shall be cated with an apprved cating per OPERATOR Cnstructin Specificatins, The cating shall be applied and cured (if applicable) per the manufacturer's specificatins prir t backfill. The cating shall be inspected fr cating hlidays using visual inspectin r a hliday detectr, whichever is apprpriate fr the existing r repaired cating. The use f rck-shield shall be cnsidered t prtect the external pipeline cating frm rcky backfill and undergrund pipe mvement. 3. Backfill Requirements - The fllwing steps shall be taken t ensure the OPERATOR pipeline is nt damaged during the backfill peratin: a. Prir t excavatin, the apprpriate Maintenance Recrd must be filled ut. b. Excavatin and backfill material shall be free f any trash and debris. In particular, any metal bjects as they may damage cating and cause interference n ILI assessments. c. Backfill material shuld be free f rcks r any nn-sil material. If the material that came ut f the hle has been mixed with rcky material, it shuld be manually segregated using the backhe befre returning t the area within a tw-ft diameter arund the pipeline. d. Clean imprted material such as sand is acceptable. Cntaminated sils can damage the cating and r be mistaken fr a release. N cntaminated sils may be used as backfill unless apprved and dcumented by the Maintenance Supervisr and Crrsin Cntrl Supervisr. e. Place backfill arund the pipe. The material must be placed arund (nt pushed) n tp f the pipe until there are tw feet f clean fill arund the pipe. Make sure the pipe is supprted with clean fill belw the pipeline prir t placing backfill n tp f the pipe. Sandbags cnstructed f wven fabric (like burlap r wven getextile) may be used t ensure adequate pipeline supprt. Slid plastic bags r cncrete bags are nt permitted fr use. f. Ensure that the material is prperly cmpacted Refill hle in maximum g. 12-inch lifts and use hand r pwered mechanical tamper t cmpact. Cmpactin equal t undisturbed sil must be achieved. N cmpactin may ccur directly ver the pipe until 18 f the cver has been established. Reference OPERATOR Cnstructin Standard, 0308 Pipe Padding, Shading, and Backfill h. Installatin f pipe prtectin r warning tape apprximately 12-inches belw finished grade abve the pipeline with warning markings that indicate the presence f a High-Pressure Hazardus Liquid Pipeline r Natural Gas Pipeline may be required. Pipe prtectin may include warning/snw fence r marking tape, cncrete slabs, r ther material that prvides a warning/barrier between the pipeline and the grund surface. Reference OPERATOR Cnstructin Standard Pipe Padding, Shading, and Backfill. Page 23 f 110

24 i. In areas where the pipeline has less than 3-feet cver, n grade cuts will be permitted Key Dcuments/Tls/References Prcedure Perfrming Line Lcates Prcedure Pipeline Inspectin OPERATOR Cnstructin Standard Excavatin OPERATOR Cnstructin Standard Freign Lines OPERATOR Cnstructin Standard Pipe Padding, Shading, and Backfill HES Prcedure Excavatin Safety Prgram, & Cmpetent Persn Daily Excavatin Check List General Restrictins fr Wrking within the Pipeline Right f Way (Damage Preventin Website) (including Engineering and Cnstructin Guidelines) OPERATOR Ethane Manual Operatr Emergency Respnse Manual Page 24 f 110

25 ATTACHMENT A (Fr Reference Only) OPERATOR - GENERAL RESTRICTIONS FOR WORKING WITHIN THE PIPELINE RIGHT OF WAY General Restrictins Page 25 f 110

26 Reference Only Right-f-Way General Restrictins Operatr 1. Detailed plans fr prpsed cnstructin in accrdance with OPERATOR s Engineering Restrictins must be submitted t Operatr Engineering Department fr review and apprval t determine t what extent, if any, the pipeline r right-f-way will be affected by the prpsed cnstructin and/r develpment. 2. A driveway r radway may crss the right-f-way and pipeline perpendicularly, but at n time will it be parallel t, ver and within the right-f-way. 3. Buildings, swimming pls, sheds, decks, trees, shrubs r any bstructin f a permanent nature shall nt be cnstructed, planted r placed within the right-f-way and easement. The width f the easements vary, but typically structures clser than (25') feet t any existing pipeline (50' easement) are nt permitted. Yu must cntact Operatr Right-f- Way Department at (xxx) xxx-xxxx t determine the easement width fr a specific prperty. 4. Wells, leach beds, cesspls r sewer systems f any type shall nt be placed within the right-f-way. 5. All undergrund facilities crssing the right-f-way shall crss under the existing pipeline with a minimum f 24-inches clearance. This includes, but is nt limited t, sewer drain lines. 6. The earth cver ver the pipelines shall be maintained and never changed in any manner withut the express written permissin f Operatr. 7. Any parking area placed ver the pipeline with permissin f Operatr shall be subject t an amendment t an agreement entered int by subject parties prir t cnstructin f same. 8. If heavy equipment is t crss the existing pipeline fr any reasn, it will be necessary fr the crssing party t prvide and maintain a ramp f sufficient material t prtect said pipeline. The peratr will make the decisin as t hw much fill and what ther type f prtective structure, if any; will be required fr the ramp. Upn cmpletin f cnstructin and discntinuatin f heavy equipment passage ver the pipeline, the ramp may be remved 9. An Operatr inspectr must be present at the time that any wrk is dne within Operatr right-f-way. 10. N blasting is permitted within 300 feet f the pipeline. Anything less than 300 feet must have the apprval f an instructin frm Operatrs Engineering Department. 11. Shuld yu have any questins r need additinal infrmatin n the afrementined Paragraphs 1 thrugh 10, please call Operatr Right-f-Way Department at (xxx) xxxxxxx. Page 26 f 110

27 12. State law requires yu t cntact yur State One Call Center as listed belw, at least tw r three days in advance, as required by yur state, prir t any cnstructin activity: 13. In additin t the legally required ntice referenced abve and t schedule an Operatr Inspectr t witness wrk in the vicinity f the pipeline, please call the selected Operatr Office belw. NOTE: CONTACTING OPERATOR DIRECTLY DOES NOT RELIEVE YOU OF THE LEGAL OBLIGATION TO NOTIFY YOUR STATE ONE CALL CENTER. (PLEASE CALL COLLECT IF OUTSIDE THE AREA CODE) Page 27 f 110

28 ATTACHMENT B Pipe Span Supprt Requirements PIPE SUPPORT TABLE NOMINAL PIPE SIZE (IN.) MIN. WALL THICKNESS (IN.) MAX. UNSUPPORTED SPAN (FEET) Listed spans are based n: A cated pipe filled with water. N external lading (valves, sil lad, r ther lads in the vertical r hrizntal directin). This table des nt apply t acetylene welded pipe. See Reference restrictins n acetylene welds. If site cnditins vary frm thse listed abve, then cntact engineering t have the span calculated in accrdance with API Page 28 f 110

29 1.5 Excavatin Standard Prcedure Scpe This Excavatin Standard ( Standard ) establishes Excavatin requirements fr First and Secnd Party Excavatin activities n r near Operatr (OPERATOR) wned and/r perated assets fr the purpse f prtecting peple frm injury and Undergrund Facilities frm damage during Excavatin-related activities. The applicatin f this Standard meets the site-specific requirements fr an Excavatin prgram as required by U.S. Department f Labr 29 CFR This Standard des nt supersede any laws, regulatins, r statutes, nr relieve any persnnel respnsible fr wrk cvered by this Standard frm knwing and cmplying with applicable laws, regulatins, r statutes. Out f Scpe: Requirements fr Lcating and Marking Third Party Excavatins are included in OPERATOR Lcating and Marking Undergrund Facilities Manual. Deviatins frm this Standard must be apprved in advance f the wrk, using the prcess utlined in OPERATOR Plicy, Develpment and Use f OPERATOR Apprved Dcuments and are dcumented (see OPERATOR Management f Change) Definitins Als, refer t the OPERATOR s Frequently Used Acrnyms list n the OPERATOR emplyee website. Abandned A Pipeline that has been physically separated frm its surce and is n lnger maintained under regulatin 49 CFR Parts 192, 195, r applicable state regulatin, and has been permanently remved frm service (i.e., OPERATOR will nt reactivate), as defined in OPERATOR Inactive and Abandned Pipeline Management Prcedure. Benching A methd f prtecting emplyees frm Cave-ins by excavating the sides f an Excavatin t frm ne r a series f hrizntal levels r steps, usually with vertical r nearvertical surfaces between levels. Cave-in The separatin f a mass f sil r rck material frm the side f an Excavatin, r the lss f sil frm under an Excavatin Shield r Supprt System, and sudden mvement f the sil r rck material int the Excavatin, either by falling r sliding, in sufficient quantity that it culd entrap, bury, r therwise injure and immbilize a persn. Cmpetent Persn A trained OPERATOR emplyee r Cntractr wh is capable f identifying existing and predictable hazards in the surrundings, r wrking cnditins which are unsanitary, hazardus, r dangerus t emplyees; and wh has the authrizatin t take prmpt crrective measures t eliminate them. The Cmpetent Persn must have specific training in, and be knwledgeable abut, sils analysis and the use f prtective systems. Cntractr Any entity (ther than OPERATOR r an Operatr affiliate) r individual (ther than an OPERATOR emplyee) cntracted t prvide services t/r n behalf f OPERATOR, including, but nt limited t: Page 29 f 110

30 Entities/individuals cntracted r under purchase rder t prvide maintenance services, cnstructin services, r t supprt prcess activities that cause them t be expsed t EH&S hazards Entities/ individuals under the direct supervisin f OPERATOR persnnel and/r entities/individuals prviding services fr OPERATOR under cntracted supervisin. Entities /Individuals Excavating n behalf f OPERATOR EH&S Blanket Wrk Permit Multi-part dcument that addresses cmmunicatin, planning, and cntrl f the risks assciated with wrk practices. This permit is used in place f the EH&S Wrk Permit where the level f risk fr the type f wrk r area where wrk is perfrmed is lw and unlikely t change. EH&S Wrk Permit Multi-part dcument (Safe Wrk, PPE, Ht Wrk, Cnfined Space, Energy Cntrl, and Persnnel Accuntability) t address cmmunicatin, planning, and cntrl f the risks assciated with wrk practices. Excavatin Any manmade cut, cavity, trench, r depressin in the earth s surface frmed by earth remval. Excavatin Wrk Wrk perfrmed t create an Excavatin, which may include augering, blasting, bring, digging, ditching, dredging, drilling, driving-in, grading, plwing-in, pulling- in, ripping, scraping, trenching, tunneling, and vacuum using either air r water, r wrk perfrmed in r arund an Excavatin. Excavatr Any individual r entity engaging in r preparing t engage in Excavatin Wrk. First Party Excavatr an Excavatr wh is an OPERATOR emplyee Secnd Party Excavatr Cntractr hired by OPERATOR and perfrming Excavatin activities n behalf f OPERATOR Third Party Excavatr an Excavatr nt assciated with OPERATOR Expsed Undergrund Facility Any utility r structure buried r placed belw the grund that has been visually verified thrugh the use f Psitive Lcating Practices. Hazardus Atmsphere An atmsphere that can expse emplyees t risk f death, incapacitatin, and impairment f ability t self-rescue (i.e., escape unaided frm a Permit Required Cnfined Space r an Excavatin), injury, r acute illness frm ne r mre f the fllwing causes: Flammable gas, vapr, r mist in excess f 10% f its lwer explsive limit (LEL). Airbrne cmbustible dust at a cncentratin that meets r exceeds its LEL. Nte: This cncentratin may be apprximated as a cnditin in which the dust bscures visin at a distance f five feet r less. Atmspheric xygen cncentratin belw 19.5% r abve 23.5%. Atmspheric cncentratin f any substance fr which a dse r a permissible expsure limit (PEL) is published in 29 CFR 1910 Subpart Z, Txic and Hazardus Substances, which culd result in emplyee expsure in excess f its dse r PEL. Page 30 f 110

31 Any ther atmspheric cnditin that is Immediately Dangerus t Life r Health. In-service Equipment r piping that has nt been islated and/r is under pressure r cntains prduct r gas. Lwer Explsive Limit (LEL) The minimum cncentratin f vapr in air belw which prpagatin f a flame des nt ccur in the presence f an ignitin surce Lcating and Marking - Preliminary methds used t identify the existence f, and estimate the lcatin and path f an Undergrund Facility thrugh use f electrnic line lcatrs, prbes, flags, paint, r ther industry-accepted tls. One Call An apprved state Excavatin ntificatin prgram designed t increase Excavatin safety and reduce damage t Undergrund Facilities. Occupatinal Safety and Health Administratin (OSHA) An agency f the Department f Labr with safety and health regulatry and enfrcement authrity fr mst U.S. businesses and industries. Permissible Expsure Limit (PEL) The level f expsure established as the highest level f expsure that an emplyee may be expsed t withut incurring the risk f adverse health effects. Psitive Lcating Practices Methds used t expse an Undergrund Facility within the Tlerance Zne t the extent necessary t visually cnfirm the depth, dimensin, path, and alignment f Undergrund Facilities. Methds include hand-digging, pt-hling, vacuum excavatin, hydr excavatin, r ther nn-mechanized methds. Psitive Respnse A dcumented cmmunicatin with an Excavatr, r if required, a State One Call Ntificatin Center, t advise that Undergrund Facilities are clear f the prpsed Excavatin, r have been marked (i.e., by phne, fax, , face-t-face, clear flags, r markers). Prhibited Zne At a minimum, a 1-ft distance frm any side f the expsed In-Service Undergrund Facilities where Excavatin methds using mechanical equipment are typically nt permitted. Ramp An inclined walking r wrking surface, cnstructed frm earth r structural materials, such as wd r steel, used t gain access frm ne pint t anther. Registered Prfessinal Engineer. An individual wh is registered as a prfessinal engineer in the state where the wrk is t be perfrmed. A prfessinal engineer registered in any state is deemed a Registered Prfessinal Engineer when apprving designs fr manufactured prtective systems. Shall/Must/Will A mandatry requirement. Shield A structure that is able t withstand the frces impsed n it by a Cave-in and thereby prtect emplyees within the structure. Shields can be permanent structures r can be designed t be prtable and mved alng as wrk prgresses. Additinally, Shields can be either pre-manufactured r jb-built in accrdance with 29 CFR (c) (3) r (c)(4). Shields used in Excavatins are usually referred t as Excavatin bxes r Excavatin Shields. Page 31 f 110

32 Shring A structure, such as a metal hydraulic, mechanical, r timber system, that supprts the sides f an Excavatin and is designed t prevent Cave-ins. Shuld A preferred r recmmended actin r methdlgy. Slping A methd f prtecting emplyees frm Cave-ins by excavating t frm sides f an Excavatin that are inclined away frm the Excavatin s as t prevent Cave-ins. The angle f incline required t prevent a Cave-in varies with differences in factrs such as the sil type, envirnmental cnditins f expsure, and applicatin f surcharge lads. Sil Classificatin A methd f classifying Type A, B, and C sil and rck depsits based n site and envirnmental cnditins and n the structure and cmpsitin f the earth depsits. Type A Sil Chesive sils with an uncnfined, cmpressive strength f 1.5 tn per square ft (tsf) (144 kpa) r greater. Examples f chesive sils include clay, silty clay, sandy clay, clay lam, and in sme cases, silty clay lam and sandy clay lam. Cemented sils, such as caliche and hardpan are als cnsidered Type A. Examples f nn-type A Sils include: fissured sil; sils subject t vibratin frm heavy traffic, pile driving, r; similar effects; sil that has been previusly disturbed; sil that is part f a slped, layered system where the layers dip int the Excavatin n a slpe f fur hrizntal t ne vertical (4H:1V) r greater; r sil material that is subject t ther factrs that wuld require it t be classified as a less stable material. Type B Sil Chesive sil with an uncnfined, cmpressive strength greater than 0.5 tsf (48 kpa), but less than 1.5 tsf (144 kpa), r granular chesinless sils including: angular gravel (similar t crushed rck), silt, silt lam, sandy lam, and in sme cases, silty clay lam and sandy clay lam. Als cnsidered Type B, are previusly disturbed sils, except thse which wuld therwise be classed as Type C sil; sil that meets the uncnfined, cmpressive strength r cementatin requirements fr Type A, but is fissured r subject t vibratin; dry rck that is nt stable; r material that is part f a slped, layered system where the layers dip int the Excavatin n a slpe less steep than fur hrizntal t ne vertical (4H:1V), but nly if the material wuld therwise be classified as Type B. Type C Sil Chesive sil with an uncnfined, cmpressive strength f 0.5 tsf (48 kpa) r less, r granular sils, including: gravel, sand, and lamy sand; submerged sil r sil frm which water is freely seeping; submerged rck that is nt stable; r material in a slped, layered system where the layers dip int the Excavatin r a slpe f fur hrizntal t ne vertical (4H:1V) r steeper. Spil Pile Material remved during an Excavatin. Structural Ramp A Ramp built f steel r wd, usually used fr vehicle access. Ramps made f sil r rck are nt cnsidered Structural Ramps. Supprt System Refers t a structure, such as underpinning, bracing, r Shring, which prvides supprt t an adjacent structure, undergrund installatin, r the sides f an Excavatin. Page 32 f 110

33 Tlerance Zne The minimum distance (as defined by each state) frm any side f an Undergrund Facility, where Psitive Lcating Practices shall be used prir t allwing the use f mechanical equipment. See Appendix A t this Standard fr state-specific Tlerance Zne details. Undergrund Facility Any installatin, utility r structure buried r placed belw the grund fr use in cnnectin with the strage r cnveyance f electrnic, telephne, r telegraphic cmmunicatins; water, sewage, cable televisin, electric, il, gas, r ther substances, and includes pipes, cnduits, ducts, cables, wires, valves, manhles, catch basins, cathdic assets (AC mitigatin cables, ande beds, rectifier cables, test leads, etc.) and attachments t these items. White-lined A practice by which the perimeter f a prpsed Excavatin lcatin is identified n the grund surface Respnsibilities Cmpetent Persn OPERATOR emplyee r Cntractr wh has a shared respnsibility fr the cntinued safety f persnnel and the prtectin f Undergrund Facilities in and arund the Excavatin Wrk, including nging verificatin/inspectin, lcating/marking and has the sle respnsibility fr determining Sil Classificatin. Identifies and ensures there is readily available emergency rescue equipment, such as a breathing apparatus, safety harness, and line, r a basket stretcher, when a Hazardus Atmsphere exists r may reasnably be expected t develp during wrk in an Excavatin. Perfrms the necessary inspectins t identify situatins that culd result in hazardus cnditins (e.g., pssible Cave-ins, indicatins f failure f prtective systems, Hazardus Atmspheres, r ther hazardus cnditins), and then ensure crrective measures are taken. Dcuments each inspectin n OPERATOR Daily Excavatin Checklist. Designs Ramps r Structural Ramps if applicable. Wrks with Permit Authrized Emplyee and the Safety Lead t ensure daily safety meetings are cnducted fr nsite persnnel Heavy Equipment Operatr OPERATOR emplyee r Cntractr wh has a shared respnsibility fr the cntinued safety f persnnel and the prtectin f Undergrund Facilities in and arund the Excavatin Wrk, including nging verificatin/inspectin, lcating/marking and has the sle respnsibility fr determining Sil Classificatin. Prir t each shift, inspects the heavy equipment. Maintains safe perating cnditin f the heavy equipment. Understands and adheres t the Tlerance Zne requirements. Maintains visual cntact with the sptter. Page 33 f 110

34 Ensures that prbing and marks are maintained and visible. Maintains a minimum ne-ft distance frm all knwn Undergrund Facilities. Ceases Excavatin activities if the OPERATOR Inspectr r ther OPERATOR representative is nt present and watching the Excavatin while excavating in clse prximity t an inservice Undergrund Facility Prject Manager. Manages and prvides versight f the prject schedule and executin f the Excavatin Wrk in accrdance with this Standard. Plans the Excavatin, including all items listed in this Standard Permit Authrized Emplyee OPERATOR emplyee r Cntractr wh has a shared respnsibility fr the cntinued safety f persnnel and the prtectin f Undergrund Facilities in and arund the Excavatin Wrk, including nging verificatin/inspectin and lcating/marking. Writes, issues, and reviews with the Safety Lead the EH&S Wrk Permits and EH&S Blanket Wrk Permits, and initiates energy cntrl t the prcess/equipment, as apprpriate, fr the wrk in his/her respective areas f respnsibilities (see OPERATOR Plicy Reference, EH&S Wrk Permit). When applicable, crdinates with a Prject Manager fr the Excavatin prject. Inspects the Excavatin site daily t ensure all precautins are being fllwed upn issuance f the EH&S Wrk Permit. Wrks with the Cmpetent Persn and the Safety Lead t ensure daily safety meetings are cnducted fr nsite persnnel Safety Lead OPERATOR emplyee r Cntractr wh, with the Permit Authrized Emplyee, ensures that the area is prperly prepared t begin wrk, and hazards and precautins cncerning the jb are cmmunicated t affected persnnel. OPERATOR emplyee r Cntractr wh has a shared respnsibility fr the cntinued safety f persnnel and the prtectin f Undergrund Facilities in and arund the Excavatin Wrk, including nging verificatin/inspectin and lcating/marking, Is identified n the EH&S Wrk Permit and must be present at the jb site while wrkers perfrm Excavatin jb tasks. Reviews infrmatin n the apprpriate EH&S Wrk Permit r the EH&S Blanket Wrk Permit with the Permit Authrized Emplyee (see OPERATOR Plicy Reference, EH&S Wrk Permit) Wrks with Permit Authrized Emplyee and the Safety Lead t ensure daily safety meetings are cnducted fr nsite persnnel. Page 34 f 110

35 Heavy Equipment Sptter OPERATOR emplyee r Cntractr wh has a shared respnsibility fr the cntinued safety f persnnel and the prtectin f Undergrund Facilities in and arund the Excavatin Wrk, including nging verificatin/inspectin and lcating/marking. Ensures that prbing and marks are maintained and visible. Understands and adheres t the Tlerance Zne Requirements. Maintains visual cntact with the heavy equipment peratr. Ceases excavatin activities if the OPERATOR Inspectr r ther OPERATOR representative is nt present and watching the Excavatin while excavating in clse prximity t an In- Service Undergrund Facility Managing Directr, Cmpliance & EHS Respnsible fr wnership and implementatin f this Standard. Reviews deviatins t this Standard as necessary Prcesses and Key Elements The table belw cntains a summary f the infrmatin cntained in this sectin. Sectin A B C D Descriptin Excavatin Plan Requirements The Excavatin plan shuld include/address the fllwing items prir t beginning Excavatin activities: Prject Manager, permits, pipeline perating pressure, Excavatin site parameters, Undergrund Facility, One Call ntificatin, verhead pwer lines, and landwner/tenant ntificatin. Excavatin Design Requirements The Cmpetent Persn shall make an initial determinatin f the Excavatin design prir t cmmencing the Excavatin Wrk, and revises the design as needed during the Excavatin. Staking and Lcating the Pipeline Requirements Prir t excavating near In-service r ut-fservice pipelines, the qualified persnnel shall use a line lcatr t stake r therwise clearly mark the lcatin, depth, and directin f the pipeline t be excavated. The pipeline r Undergrund Facilities t be excavated shuld nt be cnsidered psitively lcated until it is visible frm abve grade. Excavating Alng the Pipeline Requirements When excavating alng the lcated pipeline, the heavy equipment peratr shall nt allw any part f the bucket t get clser than ne ft (r a distance greater than ne ft, as required by state and/r lcal regulatins) t the tp, side, r bttm f the pipeline during the Excavatin prcess. Heavy equipment peratr shall nt use a bucket withut a flat bar while excavating within 20 feet f the centerline f a pipeline r utility, a bucket with side cutters, and shall use cautin when excavating remaining material arund the pipe. At least ne sptter shall be present at all times during Excavatin. Page 35 f 110

36 Sectin E F Descriptin Wrker Prtectin Requirements If fr any reasn, the Excavatin appears unsafe, wrkers have the authrity t STOP WORK. The Safety Lead must be present at the jb site while wrkers perfrm jb tasks. The Permit Authrized Emplyee, Cmpetent Persn, and/r Safety Lead cnduct daily safety meetings. The Cmpetent Persn shall inspect the Excavatin befre wrk begins and befre entry int Excavatins fur feet and/r deeper. Pst-Excavatin Wrk Area Requirements Prir t clsing ut the EH&S Wrk Permit r leaving the wrk area, an pen Excavatin shall be barricaded apprpriately and backfilled Excavatin Strategy The Excavatin strategy shuld include/address the fllwing items prir t beginning Excavatin Wrk: Prject Manager The Permit Authrized Emplyee shall identify a Prject Manager fr the Excavatin prject. The Prject Manager is respnsible fr: Cnsulting with the OPERATOR Integrity Grup r designee abut suspected pipeline defects t determine if a remedial actin, such as a pressure reductin, is apprpriate. Ensuring the apprpriate resurces are available fr the prject (i.e., crew, equipment, and materials). Ensuring nsite persnnel is infrmed f wh is the Cmpetent Persn. Ensuring the fllwing persnnel is identified: Permit Authrized Emplyee Safety Lead Registered Prfessinal Engineer (when required) Ensuring prtective systems are designed by a Registered Prfessinal Engineer as required by this Standard and applicable laws, statutes, r regulatins. Prviding facility drawings and alignment sheets t assist in lcating the pipeline and ther Undergrund Facilities. Ensuring that Excavatin wrkers have access t cpies f applicable alignment sheets and drawings when apprpriate. Cnfirming Cntractrs cmply with One Call regulatins. Verifying and ensuring that the Excavatin design includes dcumented Tlerance Zne agreements, if applicable. Verifying the apprpriate Excavatin methds (e.g., hydr, vacuum, hand, backhe, track he, and mini excavatr) are selected, cmmunicated and used in the prper lcatin. Ensuring backfill prcedures include sil cmpactin requirements where specified. Page 36 f 110

37 Permits The Prject Manager shall ensure the required regulatry and/r envirnmental permits, including crssing and access permits, are btained. The Permit Authrized Emplyee cmpletes either an EH&S Wrk Permit r an EH&S Blanket Wrk Permit fr all Excavatin activities per OPERATOR Plicy Reference, EH&S Wrk Permit Pipeline Operating Pressure Remedial actins, such as reductin f OPERATOR pipeline pressures, shall be managed as required by the OPERATOR Reference, Pipeline Integrity Management Prgram, and apprpriate welding prcedure Excavatin Site Parameters The Prject Manager: Specifies the parameters f the prpsed Excavatin site. Reviews the latest revisins f all relevant drawings and alignment sheets t: Identify any indicated pipe bends r elevatin changes. Identify the estimated lcatin f utility installatins, such as sewer, telephne, gas, electric, water lines, r ther Undergrund Facilities that may be encuntered during Excavatin Wrk befre digging Undergrund Facilities Unless therwise specified by state law, a face-t-face meeting shuld be cnducted with the wner/peratr f Undergrund Facilities lcated within 25 feet f the prpsed Excavatin. Prir t Excavating within the Tlerance Zne f Undergrund Facilities, the lcatin f the Undergrund Facilities shall be estimated thrugh prbing with a snub-nsed r ball bearing-tipped prbe bar and cnfirmed by the use f the apprpriate Psitive Lcating Practice One Call System Ntificatin The Excavatr shall ntify the apprpriate State One Call system and must give minimum ntice per applicable State One Call system requirements. If the Excavatin site cannt be clearly described n the One Call ticket, a face-t-face meeting with the Undergrund Facilities wner/peratr(s) shuld be cnducted. The Excavatr shall maintain State One Call ticket infrmatin and respnses t lcate requests and ther ntificatins. Page 37 f 110

38 In cases where municipalities r privately wned facilities are nt required t participate in an established One Call system, and the lcatin f the Excavatin appears t be in prximity t an Undergrund Facility wned/perated by a municipality r private entity, the Excavatr shuld cntact the municipality r private entity within established r custmary lcal ntificatin times t advise f the prpsed Excavatin, and request that they mark the lcatin f their Undergrund Facilities prir t the start f Excavatin. If utility cmpanies r private wners d nt prvide Psitive Respnse t a lcate request within the required timeframe, r cannt establish the exact lcatin f their Undergrund Facilities, the Prject Manager is required t ntify the apprpriate OPERATOR peratins supervisr; the peratins supervisr r designee shall make additinal attempts t ntify and request the Undergrund Facilities wner/peratr(s) t prvide a Psitive Respnse fr their Undergrund Facility prir t the start f Excavatin. If all attempts t establish a Psitive Respnse are unsuccessful, the OPERATOR Operatins supervisr may allw the Excavatin t prceed. The Prject Manager shall cnfirm that wners/peratrs f Undergrund Facilities have been ntified by One Call. Fllw OPERATOR Plicy Reference, Reprting and Tracking Incidents and Near Misses Guideline upn discvery f any unmarked r mismarked Undergrund Facility. Unless therwise specified by state law, the One Call ntificatins shall nt exceed 10 wrking days fr nging excavatin prjects Overhead Pwer Lines Where access, staging areas, r the planned Excavatin is lcated near high vltage pwer lines, the fllwing minimum clearances shall be maintained: Vehicular and/r mechanical equipment that has parts f its structure elevated near energized verhead pwer lines shall be perated s that a 10-ft clearance is maintained. If the vltage is higher than 50 kv, the clearance shall be increased fur inches fr every 10 kv ver that vltage. Nte: Cntact the verhead utility cmpany if any f the fllwing is required: Mvement f ples Ptential t undermine a ple Minimum specified distances cannt be maintained Landwner/Tenant Ntificatin The Prject Manager shall ensure that landwners and/r tenants whse prperty may be impacted are ntified f the Excavatin date. An attempt shuld be made t ntify the landwner and/r tenant f the hazards assciated with the Excavatin, and the attempted ntificatin dcumented. Page 38 f 110

39 The landwner s and/r tenant s acknwledgment shuld be dcumented if ntificatin is made. Ntice t the landwner and/r tenant shuld include the scpe f the Excavatin that is t take place in the area and a request fr their assistance in lcating pipelines and ther Undergrund Facilities. In the case f an emergency where there is a ptential threat t safety r significant envirnmental damage, ntice t the landwner and/r tenant is nt required (if impracticable t d s) Excavatin Design Requirements The Cmpetent Persn shall cnfirm with the Prject Manager the Excavatin design prir t cmmencing Excavatin Wrk, and cnsult with the Prject Manager as needed during the Excavatin. During initial determinatin, the Cmpetent Persn verifies that the fllwing requirements have been satisfied (when applicable): Ntificatins t the State One Call Center Psitive respnses received frm Undergrund Facilities wner/peratrs The depth and dimensin f the Excavatin Required services f a Registered Prfessinal Engineer Sil Classificatin Slping requirements Shring and/r Shielding equipment Pipeline supprts Supprts fr nearby structures Placement f Spil Piles When an Excavatin is anticipated t be 20 feet deep r mre and large enugh t ccupy r therwise affect the safety f wrkers, a Registered Prfessinal Engineer shall be used t design the Excavatin. The size, type and cnfiguratin(s) f the material t be used in the prtective system must be identified n the Excavatin plan. A cpy f the design must remain at the Excavatin site until the Excavatin is cmplete. Excavatins that are fur feet deep r mre shall be evaluated by the Cmpetent Persn fr the apprpriate prtective systems t be used Sil Analysis and Classificatin During Excavatin, the Cmpetent Persn has verall respnsibility fr: Cnducting sil analysis and Sil Classificatin f Type A, B, r C using apprved methds. Nte: Sil Classificatin f Type A, Type B, r Type C requires specific training n the Page 39 f 110

40 applicatin f apprved methds, which include visual and manual testing f the sil characteristics. Ensuring that Sil Classificatin is made based n the results f at least ne visual and at least ne manual analysis unless defaulting t Type C Sil. Electing t default all Sil Classificatin t Type C. Acceptable tests are listed n OPERATOR-0057, Daily Excavatin Checklist and described in 1926 Subpart P App A Surface Encumbrances All surface encumbrances that are lcated s as t create a hazard t wrkers r the pipeline shall be remved when apprpriate r supprted as necessary t safeguard wrkers and the pipeline Cnfiguratin f Slping and Benching System Unless the trench is stable rck, all trenches ver fur feet in depth shall be Slped, Shred, r Shielded. Even where the trench is less than fur feet in depth, these measures are required unless an examinatin f the grund by a Cmpetent Persn prvides n indicatin f a ptential Cavein. Slping shall be in accrdance with Table 1 belw: Nte: Where a less stable sil lies ver a mre stable sil (e.g., sil Type B lies ver sil Type A), the slpes shwn in Table 1 can be used fr each sil type. But when a mre stable sil lies ver a less stable sil (e.g., sil Type A lies ver sil Type B) the entire trench wall shall be slped in accrdance with the least stable sil. Table 1: Slping Sil r Rck Type Stable Rck Type A Type B Type C Maximum Allwable Slpes (H:V) fr Excavatins less than 20 feet deep Vertical (90 Deg.) ¾:1 (53 Deg.) 1:1 (45 Deg.) 1½:1 (34 Deg.) Design f Supprt Systems and Shield systems shall be per (c). While the Cmpetent Persn may select any f the OSHA-apprved trench designs, in mst cases, the fllwing simplified system may be used, prvided the sil is similar t the depth f the trench, r the sil that is slped r shred is assumed t be the least stable sil present. Page 40 f 110

41 Slping/Benching fr Type A Sils Sil is chesive with significant clay cntent r is cemented hardpan (e.g., caliche). A vertical slpe can be maintained withut spalling. A thumb penetratin test indicates the sil can be penetrated nly with great effrt. The cnfiguratins shwn in Figure 1 and Figure 2 are allwed. Simple benching fr Type A Sils is shwn in Figure 3. Figure 1: Unsupprted Vertically Sided Lwer Prtin Figure 2: Simple Slpe Figure 3: Simple Bench Page 41 f 110

42 Slping/Benching fr Type B Sils Sil with very lw clay cntent r fissured sils. A vertical slpe cannt be maintained withut spalling. A mist sample cannt be rlled int 1/8 diameter threads. The cnfiguratin shwn in Figure 4 is allwed. Multiple 1:1 benching fr Type B Sils is shwn in Figure 5. Figure 4: Simple 1:1 Slpe Figure 5: Multiple 1:1 Bench Slping/Benching fr Type C Sils Sil is gravel, sand, carse mixed sand, r unstable water-saturated sil. A thumb penetratin test indicates the sil can be penetrated several inches. The cnfiguratin shwn in Figure 6 is allwed. A trench bx r trench Shield as shwn in Figure 7 may be used fr Type C Sils. Page 42 f 110

43 Figure 6: Simple 1½: 1 Slpe Figure 7: Trench Bx (Trench Shields) Shring and Shielding Systems Shring and/r Shielding systems shall be designed by a Registered Prfessinal Engineer. Only trench bxes (Shields) designed by a Registered Prfessinal Engineer shall be acceptable (see Figure 8 belw). Shields can be either pre-manufactured r jb-built in accrdance with OSHA (c)(3) r (c)(4). Shields used in trenches are usually referred t as "trench bxes" r "trench shields. Page 43 f 110

44 Figure 8: Trench Bx (Shield) Examples Lcating and Marking the Pipeline Requirements Marking the Pipeline(s) Prir t OPERATOR Excavating near In-service r ut-f-service pipelines, qualified persnnel shall: Use a line lcatr, such as an audi frequency cnductive lcatr, t identify the lcatin f stake placement r therwise clearly mark the lcatin, depth, and directin f the pipeline t be excavated. Where there is ne r mre parallel r adjacent pipeline r utility in the same right-f-way, all such pipelines/utilities shall be clearly marked. Mark the estimated lcatin f the pipeline(s) with a maximum spacing between marks f 10 feet, and the markings shall extend at least 25 feet beynd bth f the planned ends f the Excavatin (unless state law specifies a greater distance). Stake all identified side bends alng the entire length f the bend. The electrnic line lcatr shall nly be used by qualified persnnel per OPERATOR reference t Operatr Qualificatin. During Excavatin, the Cmpetent Persn must verify: That the OPERATOR pipeline is marked and all ther Undergrund Facilities in clse prximity f the right-f-way and/r facility are marked. The psitive lcatin f the entire pipeline segment t be excavated frm initial prbing until the pipeline is visible frm abve grade. The pipeline/utility t be excavated and all ther Undergrund Facilities n r near the right-f-way are prperly identified and clearly marked. Page 44 f 110

45 Nte: The line lcating and marking practices described in this Standard are intended fr OPERATOR Excavatins n OPERATOR wned and/r perated Undergrund Facilities. Additinal guidance and technical infrmatin prvided in the OPERATOR Lcating and Marking Undergrund Facilities Manual may als be used as a reference and applicable sectins used in cnjunctin with the Excavatin practices described in this Standard Psitively Lcating the Undergrund Facilities t be Excavated All Undergrund Facilities t be excavated are cnsidered psitively lcated when they are visible frm abve grade. When prbing, use a snub-nsed r ball bearing-tipped prbe bar. D nt use a prbe bar that has an edge r pint f any kind. Exercise care when prbing the line t avid damaging the pipeline cating. The heavy equipment peratr may dig n clser than the Prhibited Zne frm any side f Undergrund Facilities, and at greater distances when required by applicable state law. See OPERATOR Daily Excavatin Checklist One r mre f the prcedures described belw shuld be used t psitively lcate the pipeline in a safe manner Lcate Prcedure A Step Actin If frst r hardpan prevents prbing, use heavy equipment t push frst r hardpan away frm abve the pipe in maximum 1-ft lifts (see Figure 9 belw). At tw lcatins separated axially alng the pipeline by apprximately 6 feet, prbe transversely acrss the pipeline at 90 degrees t the axis f the pipeline. Prbe t identify bth sides f the pipe and determine the depth f cver ver the centerline f the pipe (see Figure 9 belw). Leave prbes in the grund adjacent t the same side f the pipe at bth axial lcatins 6 feet apart. Excavate ffset trench with heavy equipment parallel t, but ffset frm, the pipeline nt nearer than 1-ft (600 mm) frm the prbes identifying the nearest edge f the pipe (see Figure 9 belw). Cntinue t deepen ffset trench t a depth belw the calculated bttm f the pipe, and allw the sil frm abve the pipe t fall (r be mved with a hand-shvel) int the ffset trench until the pipe is visually expsed and visible t the heavy equipment peratr (see Figure 9 belw). Page 45 f 110

46 Page 46 f 110

47 Lcate Prcedure B Step Actin 1 Prbe the pipeline t determine its lcatin and depth. 2 Use hydr r vacuum Excavatin r hand-excavatin t visually expse the pipe withut using heavy equipment. 3 Expse a sufficient length f pipe t cnfirm the alignment Place a prbe visible t heavy equipment peratr at each edge f pipe visible t heavy equipment peratr. Excavate ffset trench with heavy equipment parallel t, but ffset frm, the pipeline nt nearer than 1-ft (600 mm) frm the prbes identifying the nearest edge f the pipe (see Figure 9 ). Cntinue t deepen ffset trench t a depth belw the calculated bttm f the pipe, and allw the sil frm abve the pipe t fall (r be mved with a hand-shvel) int the ffset trench until the pipe is visually expsed and visible t the heavy equipment peratr (see Figure 9) Lcate Prcedure C Rck Trench Step Actin 1 Attempt t prbe the pipeline t determine lcatin and depth f cver. 2 Heavy equipment peratr shuld slide r remve withut digging, surface rck away frm the Undergrund Facilities. 3 Hand-dig t the extent pssible abve the pipe. 4 Alternate prbing, hand-digging, and rck lifting until the pipe is visually expsed. 5 Ensure rcks are nt frced against the Undergrund Facilities Excavating Alng the Lcated Pipeline Requirements When excavating alng the lcated pipeline, the heavy equipment peratr: Shall nt allw any part f the bucket t get clser than the Prhibited Zne t the tp, side, r bttm f the pipeline during the Excavatin prcess. See OPERATOR, Daily Excavatin Checklist. Shall ensure that prbing and the cntinued use f paint, stakes, flags r ther apprved line lcating and marking practices are maintained thrughut the duratin f the Excavatin. Exceptin: If the OPERATOR wned r perated pipe is ging t be replaced, demlished, r Abandned and it has been verified that the pipeline is islated, depressurized and t the extent practicable, free f prduct, this limitatin des nt apply. Page 47 f 110

48 Shall nly use a bucket with a flat bar while excavating within 20 feet f the centerline f an Undergrund Facility. Nte: Buckets with a paddle tth design may be used n a case-bycase basis after a team review by OPERATOR Safety, Engineering/ Cnstructin, and Operatins persnnel. Shall nt use a bucket with side cutters. Shall use cautin while excavating the remaining material arund the pipe t prevent damage t the pipeline and the pipeline cating. Shuld cnsider and use sft digging practices, which include hydr r vacuum excavatin, hand digging, etc., where apprpriate. Examples f lcatins where sft digging practices shuld be cnsidered include statin wrk r multi-pipeline crridrs where the lcatin f Undergrund Facilities are unknwn r can t be verified. At least ne sptter shall be present at all times during an Excavatin: Where visibility is bstructed. During equipment/material handling in r ut f the Excavatin. The area ver the pipeline must nt be used as a pivting pint fr mving heavy equipment withut verifying the apprpriate depth f cver r using cnstructin mats that will prevent damage t the pipeline. Nte: Heavy equipment des nt include Hydr Excavatin r vacuum Excavatin Excavated Material Spil Piles shall be placed n clser than tw feet frm the edge f the Excavatin. Spil shall be stacked at a minimum slpe f 1.5 hrizntal t 1 vertical, and at n mre than a 45-degree slpe Wrker Prtectin Requirements If fr any reasn, the Excavatin appears unsafe, wrkers have the authrity t STOP WORK. The Excavatin must be made safe and re-inspected by the Cmpetent Persn befre entering. N ne is allwed t wrk alne in an Excavatin withut thers present in the immediate area and maintaining cmmunicatins. The Cmpetent Persn ensures that wrkers are trained in the prper use, safety, and maintenance f Excavatin safety equipment, methds, and techniques, as applicable. The Safety Lead: Must be present at the jb site while wrkers perfrm jb tasks. Peridically mnitrs wrk. Verifies that a rescue pre-plan has been develped and cmmunicated t wrkers if applicable. Prir t beginning Excavatin Wrk, the Safety Lead: Page 48 f 110

49 Reviews the apprpriate EH&S Wrk Permit r EH&S Blanket Wrk Permit with applicable persnnel. Ensures that wrkers and thers that may be expsed t hazards cntrlled by the EH&S Wrk Permit are lgged nt the permit Safety Meetings The Permit Authrized Emplyee, Cmpetent Persn, and/r Safety Lead shall: Cnduct daily safety meetings fr nsite persnnel. Ensure safety meetings are held prir t each shift and are specific t the Excavatin practices and ther imprtant site-specific cnsideratins cvered by the EH&S Wrk Permit Excavatin Inspectins The Cmpetent Persn shall: Inspect the Excavatin befre wrk begins and befre entry int Excavatins fur feet r deeper fr indicatins f slughing, stress cracking, r ther signs f sil failure, Cave-in, failure f prtective systems, r Hazardus Atmsphere. Nte: If any f these cnditins are bserved, including thse that may affect the general public r the integrity f structures in r arund the Excavatin, they must be crrected befre entry int the Excavatin can be permitted. Inspect the Excavatin as needed thrughut the shift, as well as after every rain r anther hazard that may ccur. Dcument each inspectin n OPERATOR, Daily Excavatin Checklist. The Permit Authrized Emplyee inspects the Excavatin site daily t ensure all precautins are being fllwed upn issuance f the EH&S Wrk Permit Safety Precautins Wrkers shuld refer t the EH&S Wrk Permit, EH&S Blanket Wrk Permit, r PPE Hazard Assessment as applicable fr PPE requirements. When a hazardus situatin is identified, everyne must immediately exit the Excavatin. Once necessary precautins are taken t eliminate the hazard and ensure the safety f thse wrking at the jb site, wrkers may return t the Excavatin with the Cmpetent Persn's apprval. Wrkers shall nt be underneath suspended lads. When wrking in the Excavatin, including during ingress and egress, wrkers shall remain within the prtective system. Wrkers expsed t vehicular traffic r mbile cnstructin equipment shall be prvided with and shall wear a vest made f reflective material. Nte: A minimum ANSI Class II reflective vest is required. Page 49 f 110

50 Wrkers entering deep and cnfined fting Excavatins shall wear a harness with a lifeline securely attached t it. The lifeline shall be separate frm any line used t handle materials and shall be individually attended at all times while the emplyee wearing the lifeline is in the Excavatin. Safe means f Ingress/Egress. A stairway, ladder, Ramp, r ther safe means f egress shall be lcated in trench Excavatins that are fur feet r mre in depth s as t require n mre than 25 feet f lateral travel fr emplyees. Ladders shall extend at least three feet abve the tp f the Excavatin and shall be secured t eliminate mvement. Nn-self-supprting ladders shall be used at an angle such that the hrizntal distance frm the tp supprt t the ft f the ladder is apprximately ne-quarter f the wrking length f the ladder (the distance alng the ladder between the ft and the tp supprt) Water in the Excavatin Persnnel shall nt wrk in Excavatins in which there is accumulated water, r in Excavatins in which water is accumulating unless adequate precautins have been taken t prtect emplyees against the hazards psed by water accumulatin. If water is cntrlled r prevented frm accumulating thrugh the use f water remval equipment, the water remval equipment and peratins shall be mnitred by a Cmpetent Persn t ensure prper peratin. The Excavatin shall als be evaluated by the Cmpetent Persn t determine if temprary flring is required after water has been pumped ut Atmspheric Mnitring The Safety Lead: Ensures initial atmspheric tests are perfrmed with prperly calibrated equipment. Ensures atmspheric tests are cnducted and dcumented as specified by OPERATOR Plicy Reference, EH&S Wrk Permit Initial Mnitring Adequate precautins shall be taken t prevent wrker expsure t an atmsphere with less than 19.5% xygen r mre than 23.5% xygen, and/r a cncentratin f flammable gas r txic cntaminants that exceed a PEL. See OPERATOR plicy reference, EH&S Wrk Permit, Atmspheric Mnitring Lg Sectin, fr acceptable limits Prir t initial entry int the Excavatin, the Permit Authrized Emplyee shall perfrm atmspheric testing f the Excavatin. The Permit Authrized Emplyee shall remain psitined utside f the Excavatin using equipment that is capable f prviding a representative sample f the Excavatin atmsphere. Page 50 f 110

51 Remte sampling pump, prbes, and/r tubing shall be used t facilitate the initial mnitring. Emergency rescue equipment shall be readily available where hazardus atmspheric cnditins exist r may reasnably be expected t develp during wrk in an excavatin. The equipment shall be attended when in use. Examples f emergency equipment include: Breathing apparatus Safety harness and lifeline Basket stretcher Cntinuus r Peridic Atmspheric Mnitring Refer t OPERATOR plicy reference, EH&S Wrk Permit, fr requirements fr cntinuus mnitring r peridic mnitring t prtect emplyees wrking inside Excavatins where a Hazardus Atmsphere may exist Walkway/Bridge acrss Trench Where wrkers are required and/r permitted t crss ver the Excavatin, a walkway r bridge with standard guardrails and tebards shall be prvided. The walkway r bridge shall be apprved fr site use by the Cmpetent Persn and shall meet all applicable OSHA requirements. Guardrails which cmply with (b) shall be prvided where walkways are six feet r mre abve lwer levels Heavy Equipment and Tl Restrictin D nt place r psitin heavy equipment and tls s clse t the Excavatin that they wuld impact the structural stability f the Excavatin. During entry peratins, heavy equipment and tls shall be placed n clser than tw feet frm the edge f the Excavatin at all times. If the equipment peratr des nt have a clear and direct view f the edge f the excavatin, use a warning system, such as a barricade, hand-signals, r stp lgs. Pile driving peratins r any ther cnstructin peratins that generate grund vibratins are nt permitted arund, near, r in the Excavatin, while wrkers are in the Excavatin Overhead Pwer Lines When wrkers are perfrming Excavatin activities, including mbilizing equipment, in the vicinity f an verhead pwer line, the Cmpetent Persn shall ensure that the wrk is cnducted in accrdance with Operatr Prcedure Pst-Excavatin Wrk Area Requirements Backfilling Remve debris and rcks frm the trench. Page 51 f 110

52 Backfilling must prceed in a manner that will prevent persnnel expsure t the hazards assciated with Excavatin and backfill activities while prtecting the integrity f Undergrund Facilities. Backfill material shall be free f trash, debris, ciled wire, large rck, chunks f hardpacked clay r dirt, sharp bjects, r ther material that may damage the pipeline cating and/r pipeline r interfere with the accuracy f future lcates Barricading Prir t clsing ut the EH&S Wrk Permit r leaving the wrk area, pen Excavatins shall be barricaded apprpriately with range cnstructin fencing r equivalent prtective methds and marked fr easy recgnitin day r night. Nte: Trenches that are nt feasible t barricade and d nt pse a risk t peple d nt require barricading. Excavatins must nt be left pen any lnger than needed after the jb task has been cmpleted Assessment Criteria The fllwing criteria shuld be used t assess the effectiveness f this Standard: Review f a sampling f cmpleted Daily Excavatin Checklist Review f a sampling f cmpleted EH&S Wrk Permits. Near Miss and Incident Investigatins. On-site reviews f Excavatin activities. Cmpletin f training requirements Excavatin versight and trending data per Critical Wrk Oversight Training and Qualificatin Requirements OPERATOR Emplyees and Cntractrs invlved in Excavatin Wrk: Shall cmplete initial training n the requirements f this Standard prir t perfrming Excavatin Wrk r within 120 days f hire date r the start f rle whichever cmes first. Shall cmplete dcumented annual classrm training n this Standard and n OPERATOR Plicy reference, EH&S Wrk Permit. Permit. Shall cmplete dcumented training n the fllwing as applicable t the rle f the individual perfrming Excavatin Wrk: Authrized Emplyee Certificatin OPERATOR Excavatin Standard Sil Analysis/Prtective Systems Fire Extinguishers Atmspheric Testing Equipment HazCm Page 52 f 110

53 Respiratry Prtectin Hearing Cnservatin First Aid/CPR Rescue Benzene Hydrgen Sulfide Asbests Permit Authrized Emplyee Must successfully cmplete applicable training requirements Must als be certified as qualified by the OPERATOR Operatins Manager/Supervisr. Certificatin is t be dcumented using the Authrized Emplyee Certificatin frm Cmpetent Persn Must successfully cmplete applicable training requirements Must have specific training in Excavatin safe wrk practices, and Sil Classificatin f Type A, Type B, and Type C sils and the applicatin f apprved methds, which include visual and manual tests f the sil characteristics (unless defaulting t Type C) Operatr Qualificatin Requirements Persnnel must meet applicable requirements f reference t Operatr Qualificatin Refresher Training Shall be assigned thrugh the OPERATOR Management system Shall be cnducted annually Shall target the same participants that received initial training Training Dcumentatin Shall be retained per the OPERATOR Retentin Schedule References and Resurces OPERATOR Apprved Dcuments Develpment and Use f OPERATOR Apprved Dcuments Reprting and Tracking Incidents and Near Misses Cntractr Selectin and Management Prcess Pipeline Integrity Management Prgram Manual Lcating and Marking Undergrund Facilities Manual Training Operatr Qualificatin Page 53 f 110

54 EH&S Wrk Permit Management f Change Inactive and Abandned Pipeline Management Daily Excavatin Checklist Excavatin Qualificatin Review EH&S Wrk Permit Authrized Emplyee Certificatin Other Resurces OSHA FR 54:45909 U.S. Department f Labr 29 CFR (b), (b), (c)(3) r (c)(4), 1926 Subpart P, Excavatins, App A State Tlerance Zne Reference Sheets Illinis Tlerance Zne Reference Sheet - (220 ILCSA 50/XXX) Illinis Undergrund Utility Facilities Damage Preventin Act (220 ILCS 50/2.7) Sec Tlerance zne. "Tlerance zne" means the apprximate lcatin f undergrund utility facilities defined as a strip f land at least 3 feet wide, but nt wider than the width f the undergrund facility plus 1-1/2 feet n either side f such facility based upn the markings made by the wner r peratr f the facility. Excavatin within the tlerance zne requires extra care and precautin including, but nt limited t, as set frth in Sectin 4. (Surce: P.A , eff ) (220 ILCS 50/4) (frm Ch /3, par. 1604) Sec. 4. Required activities. Every persn wh engages in nn-emergency excavatin r demlitin shall: (b) plan the excavatin r demlitin t avid r minimize interference with undergrund utility facilities within the tlerance zne by utilizing such precautins that include, but are nt limited t, hand excavatin, vacuum excavatin methds, and visually inspecting the excavatin while in prgress until clear f the existing marked facility; Nthing in this Sectin prhibits the use f any methd f excavatin if cnducted in a manner that wuld avid interference with undergrund utility facilities. Page 54 f 110

55 Iwa Tlerance Zne Reference Sheet Chapter 480, Iwa Cde The hrizntal lcatin f any undergrund facility is defined by Iwa law as including an area eighteen (18) inches n either side f the undergrund facility. This area is ften referred t as the tlerance zne. Excavatrs shuld bserve this tlerance zne and take precautinary measures t avid encuntering undergrund facilities when excavating near r within this area. When excavatins take place within the tlerance zne, excavatrs shuld hand-dig test hles t determine the lcatin f the undergrund facilities. N equipment r machinery, ther than accepted prcedures, such as vacuum excavatin, shuld be used fr expsing undergrund facilities within the tlerance zne. Page 55 f 110

56 Minnesta Tlerance Zne Reference Sheet - Gpher State One Call Excavating within a Tlerance Zne Excavatrs are required t maintain a minimum hrizntal (side t side) clearance f tw feet (24") between an unexpsed facility and the cutting edge r pint f any pwer-perated excavating r earth-mving equipment. Fr example: if the markings indicate a 6" pipe is buried, the hand dig zne is 54" wide (24" + 6" + 24"). If the excavatin is required within the hand dig zne, the excavatin must be perfrmed very carefully with vacuum excavatin r hand tls and withut damage t the facility r undermining f lateral supprt. Excavatrs are reminded that a facility depth may vary due t installatin practices, changes in grade, frst, ersin and ther variables. Therefre, any depth readings given by a lcatr, if given at all, are nly an estimatin f the depth f the facilities, and the excavatr is still respnsible t safely expse the facility withut damage Hand Dig with Care Minnesta Law requires the use f hand tls (r vacuum excavatin) when excavatin will take place within 2 feet (24 inches) n either side f a marked undergrund facility. Gpher State One Call (GSOC) reminds yu t use care when yu are digging within this hand-dig tlerance zne. Respect the marks t prtect yurself and the undergrund lines integrity. GSOC takes any, and all lcate requests frm excavatrs wh plan n using hand tls. The detailed infrmatin regarding hand excavatin fr prfessinal and casual excavatrs alike is available at GSOC als advises yu that althugh hand tls are exempt frm the requirement t cntact GSOC befre yu dig, in sme circumstances it may be safer fr yu t have undergrund facilities marked when using hand tls. Hand tls may pse a threat t yu, thers and undergrund facilities. Therefre, cntact GSOC and submit an excavatin request anytime yu are unsure f the lcatin f undergrund facilities r where the nature f yur wrk may put them in danger. Page 56 f 110

57 Missuri Apprximate Lcatin Reference Sheet Undergrund Facility Safety and Damage Preventin Act Sectins thrugh Definitins Fr the purpses f sectins t ,the fllwing terms mean: (1) Apprximate lcatin, a strip Missuri uses the term Apprximate Lcatin rather than Tlerance Zne Apprximate Lcatin An Apprximate Lcatin is defined by Missuri law as a strip f land nt wider than the width f the undergrund facility, plus tw feet n either side theref. Excavatin within this area shuld be dne in a safe and prudent manner. Hand digging is recmmended Fr the purpses f sectins t ,the fllwing terms mean (1) In situatins where reinfrced cncrete, a multiplicity f adjacent facilities r ther unusual specified cnditins interfere with lcatin attempts, the wner r peratr shall designate t the best f his r her ability an apprximate lcatin f greater width. Page 57 f 110

58 Wiscnsin Tlerance Zne Reference Sheet Special Digging Requirements within Tlerance Zne Wiscnsin Statutes (2) (am) Excavatin ntice. An excavatr shall d all f the fllwing: 3. Maintain an estimated minimum clearance f 18 inches between a marking fr an unexpsed undergrund transmissin facility that is marked under sub. (2m) and the cutting edge r pint f any pwer-perated excavating r earth mving equipment, except as is necessary at the beginning f the excavatin prcess t penetrate and remve the surface layer f pavement. When the undergrund transmissin facility becmes expsed r if the transmissin facility is already expsed, the excavatr may reduce the clearance t 2 times the knwn limit f cntrl f the cutting edge r pint f the equipment r 12 inches, whichever is greater. Page 58 f 110

59 Texas Tlerance Zne Reference Sheet TAC Definitins (21) Tlerance zne--half the nminal diameter f the undergrund pipeline plus a minimum f 18 inches n either side f the utside edge f the undergrund pipeline n a hrizntal plane. (b) When excavatin is t take place within the specified tlerance zne, an excavatr shall exercise such reasnable care as may be necessary t prevent damage t any undergrund pipeline in r near the excavatin area. Methds t cnsider, based n certain climate r gegraphical cnditins, include hand digging when practical, sft digging, vacuum excavatin methds, pneumatic hand tls. Other mechanical methds r ther technical methds that may be develped may be used with the apprval f the undergrund pipeline peratr. Hand digging and nn-invasive methds are nt required fr pavement remval. Nte: This appendix cntains cmpany-specific perating practices, frms, checklists, reprts, r ther cmpany practices. The purpse f this infrmatin sharing is t prmte pipeline safety by allwing cmpanies t cnsider a variety f cmpany safety practices that may enhance pipeline safety in apprpriate situatins. Please refer t state specific regulatins fr updated state damage preventin guidelines and regulatins. API takes n psitin n whether the practices described abve are apprpriate fr any particular pipeline peratr, pipeline facility, r perating cnditin. These examples are nt API Standards r Recmmended Practices (althugh sme examples may incrprate prtins f API Standards r Recmmended Practices). Use f mandatry r advisry terms such as shall, shall nt, must, may, may nt, r similar terms reflect the submitting cmpany s particular practice, and shuld nt be interpreted as necessarily reflecting mandatry r advisable practices by API. Page 59 f 110

60 1.6 Excavatin Damage Preventin Practices Prcedure Overview Purpse: This dcument prvides: Damage preventin wrk practices fr excavatin f pipelines r ther utilities. A One Call Pre-Excavatin prcess t: Verify regulatry cmpliance, and Prvide cnsistent prcess perfrmance. Scpe: This dcument applies t: Belw grund piping and utilities perated by OPERATOR r thers and/r regulated by Cmpany (1st Party) r authrized Cntractrs (2nd Party) perfrming related activities prir t, during, and after excavatin, All wh have a rle in the One Call prcess affecting OPERATOR perated assets, and Activities requiring a One Call: Excavatin that penetrates, bres, r drills int the earth, including, but nt limited t: Mechanical digging Blasting, and Manual/hand digging. Demlitin f any structure. This prcess des nt cver the fllwing activities, which d nt require placement f a One Call: Prbing fr line lcating, Staking fr One Call placement, r Replacing DOT markers in existing hles. Cntents: This dcument cntains the fllwing sectins: Overview Health Envirnment and Safety (HES) Determine Scpe (Stage 1) Excavatin Plans (Stage 2) One Call Placement (Stage 3) Pre-Excavatin Requirements (Stage 4) Determine Tlerance Zne Cmmence Excavatin (Stage 5) Backfilling (Stage 6) Prcess Cmpletin Activities (Stage 7) Page 60 f 110

61 Excavatin Variance Management f the Prcess Training and Cmpetencies Definitins Frms Attachments References Variances Regulatry Cmpliance Recrds Management Additinal Infrmatin Revisin Histry Health Envirnment and Safety (HES) Damaging an undergrund pipeline culd lead t serius, even catastrphic results. Safety n excavatin sites includes, but is nt limited t: Clear understanding f jb site parameters and scpe f wrk Placement f traffic and site warning signs Installatin f barricades Emergency respnse/rescue equipment Prper persnal prtective equipment (PPE), and Cmpliance with the Occupatinal Safety Health Administratin (OSHA) OSHA 29 CFR Nte: Damage preventin prcedures, especially excavatin planning, can help t avid unnecessary r increased risks and devastating cnsequences during excavatin. Refer t the fllwing fr mre details n excavatin safety practices: Trenching and Excavatin Safety Prcedure/Plicy (reference) Persnal Prtective Equipment (PPE) Prcedure/Plicy (reference), and Cntractr Safety Plicy - (reference). Page 61 f 110

62 1.6.3 Determine Scpe (Stage 1) General Infrmatin Prir t cmmencing excavatin activities, the Marketing and Transprtatin Engineering (MTE) Prject Leader r Area persnnel leading the prject (PL) reviews and cmpletes the Excavatin Plan and Scpe (Stage 1). The Prject Leader wrks with the cntractr t btain necessary infrmatin abut the dig site Research The fllwing steps are perfrmed in Stage 1 f the research prcess. Wh Step What PL 1 PL 2 Cntractr 3 Prvides the Cntractr with the fllwing infrmatin. Site-specific infrmatin, such as: Alignment sheet infrmatin Segment Statin number Right f way (ROW) number Cunty Twnship State GPS crdinates Sectin, and Maps Requests infrmatin abut the dig site frm the Cntractr, r designee. Determines if lng excavatins and ptential pipe supprt is needed. Prvides the PL with all site investigatin infrmatin that includes, but is nt limited t dig-site ntes: Land type: General ROW Residential Rad, r Tillable field. Wh staked the dig lcatin Apprximate pipe depth f cver, and Site phtgraphs with the date and time. Page 62 f 110

63 Wh Step What Excavatr 4 PL 5 Gathers infrmatin fr One Call and places a One Call based n the infrmatin in Step 1: Directins fr lcate Date f planned excavatin, and Invlved utilities and cntacts. Cmplete research prir t excavatin t determine what excavatin methd type will be used. Gathers infrmatin, frm: Alignment sheets, r facility drawings, including: Freign utilities in the area, and Appurtenances, such as: Cathdic Prtectin (CP) system wires, and site field knwledge frm lcal peratins field persnnel, and ther items t pssibly cnsider: In-line inspectin tl (anmaly) data frm the Analysis Prcess Leader, and Previus pressure reductins/shut dwn. Pipeline bends. As-Built drawings Page 63 f 110

64 Wh Step What PL and Excavatr 6 When planning an excavatin f an immediate cnditin r emergency situatin: If... The excavatin site is within 220 yards frm any building intended fr human ccupancy Within the ROW f an active: Railrad Paved rad Street Highway A lcatin where a lss f hazardus liquid culd pllute any: Stream River Lake Reservir, r Other bdy f water Nte: The distance is nt defined. Cntact the Prject Leader if water is nearby. Then... Ntify the Cmpliance fr cnsideratin f the cmpletin f a Safety Related Cnditin (SRC) Reprt. Nte: Cmpliance determines the SRC. Nte: See the Safety-Related Reprt - (Operatr Prcedure reference) fr infrmatin regarding safety-related cnditins. Page 64 f 110

65 Risk Evaluatins The PL uses the fllwing t classify the site: Lw-risk sites are excavatins utside f statins, with n crssings r freign utilities within 50 feet f the planned excavatin area, and All thers are high-risk sites. The Excavatin area is defined prpsed dig site lcatin plus 50 feet. If PL wuld like t change the site frm high t lw risk based n ther criteria, cntact Excavatin Prcess Leader. See Trenching and Excavatin Safety - (Operatr Plicy reference) fr ther risks which culd increase elevatins f a site frm lw t high risk such as: Sil cnditins Slpe, and Deep excavatins Excavatin Plans (Stage 2) Stakehlder Cmmunicatins All excavatins must have a current apprved excavatin plan. The Excavatin Plan Questinnaire (frm) is t be used by the Prject Leader (PL) as a planning tl prir t excavatin. The excavatin plan is prject specific and can be used fr multiple dig sites within the same prject if all infrmatin is cnsistent per dig. Imprtant: If infrmatin changes, the excavatin plan is required t be updated with new infrmatin. It is the PL s respnsibility t cmmunicate the excavatin plan with all apprpriate stakehlders and btain buy-in frm stakehlders t mve frward with the planned excavatin. The PL can delegate this respnsibility t the inspectr n site. The PL is the final apprver f the plan. All changes t the excavatin plan must be cmmunicated with the stakehlders prir t beginning excavatin. If changes are needed t the plan nce excavatin has begun, wrk must stp until the changes are cmmunicated with the stakehlders and apprved. Stakehlder Identificatin The fllwing lists internal/external stakehlders with whm the excavatin plan is suggested t be cmmunicated: Area Representative/Area Prject Crdinatr (APC) One Call Prcess Leader DP Supervisr/DP Prcess Leader Safety Representative Page 65 f 110

66 Cntractr/Excavatr, and Inspectr. Nte: Cmmunicatin with stakehlders can be dne at different times in the planning prcess. Lw Risk Verbal plans are acceptable fr Lw-Risk Excavatin sites. Nte: Refer t Excavatin Plan Questinnaire (frm) fr guidance. The PL r designee cmmunicates the plan t stakehlders. This can be dne during the pre-jb meeting prir t starting wrk. See Wrk Permit Prcess - (reference). High Risk Written plans are required fr High-Risk sites and are cmpleted by the PL r designee. Nte: The Excavatin Plan Questinnaire (frm) is the dcumentatin fr written excavatin plans. The PL receives verbal apprval frm apprpriate stakehlders. The PL prvides the inspectr n site with the apprved Excavatin Plan Questinnaire (frm) One Call Placement (Stage 3) White Lining The Cntractr/Excavatr white lines the excavatin prir t placing a One Call. White lining is a damage preventin practice used t mark the prpsed area f excavatin and/r rute with: White flags Stakes with white flags, r White paint. Nte: White lining is an OPERATOR Best Practice and Cmmn Grund Alliance (CGA) Best Practice and is required in sme states. See attachment fr details Place the One Call The excavatr places the One Call with State agency, see Placing Nrmal and Emergency One Calls - (Operatr Prcedure reference). Fr a nrmal One Call, it is required hurs befre excavatin, depending n state rules. Page 66 f 110

67 One Call Pre- Excavatin Prcess The steps belw describe the One Call Pre-Excavatin prcess fr nrmal and emergency One Calls. Wh Step What Answers the fllwing questins t verify cmpliance is met. Questin Yes N Was initial One Call placed by the excavatr? Has mandatry wait time(s) been fulfilled? Nte: A mandatry wait time may be applicable after placement f a secnd One- Call. Refer t State One Call Requirements lcated in the Attachments sectin f Placing Emergency and Nrmal One Calls - (Operatr Prcedure reference) fr state-by-state wait time requirements. PL/ Excavatr 1 D utility markings r flaggings match the One Call ticket infrmatin? Have psitive respnse(s) been received? Has smene visually inspected the area fr signs f ther utilities prir t excavatin, such as DOT markers. If... All Yes bxes have been checked abve. Then... Pre-excavatin is cmplete The PL can authrize excavatin t take place in cmpliance with: State laws, and OPERATOR guidelines. Share imprtant infrmatin with the excavatr. Page 67 f 110

68 Wh Step What Any utilities are: Unmarked Incmplete N respnse received frm, r Believe t be mismarked D nt begin excavatin Determine whether unmarked utilities r incmplete psitive respnse(s) are: Dangerus Nn-dangerus. Place a secnd One Call by referring t Placing Emergency and Nrmal One Calls - (Operatr Prcedure reference). Cntact the utility directly t determine utility impact and btain clearance, and The PL assembles a stakehlder call. (Assume the apprvers f the plan wuld attend the call) Prject Leader 2 Evaluates all issues: Decides whether excavatin may begin, r If Reslutin will be taken. If... Then... All issues are reslved, All issues are nt reslved, Authrizes excavatin t take place in cmpliance with: State laws, and OPERATOR guidelines. Shares imprtant infrmatin with Excavatr, fllwing the checklist belw fr OPERATOR s best practices: Prceed t Reslutin Prcess Sectin t begin reslutin attempts. Page 68 f 110

69 Emergency One Calls If there is a need t place an Emergency One Call, cntact the One Call Prcess Leader prir t making an Emergency One Call. If all issues are nt reslved, then prceed t reslutin prcess sectin t begin reslutin attempts. See Placing Emergency and Nrmal One Calls - (Operatr Prcedure reference). Wait tw hurs after placement f Emergency One Call befre excavating. See State One Call Requirements lcated in the Operatr Prcedure fr Placing Emergency and Nrmal One Calls - (Operatr Prcedure reference) fr each case. If State law allws, excavatin may begin befre tw-hur wait-time if all utilities listed n One Call Ticket prvide psitive respnses. Visually inspect the area fr signs f ther utilities prir t excavatin, such as DOT markers Reslutin Prcess If the psitive respnse has nt been received by all utilities, prceed t the reslutin prcess. Overview The fllwing prvides a general verview f the Reslutin Prcess. The Prject Leader (PL) is respnsible fr the fllwing: If: Then... Unmarked utilities are nt dangerus Cntact Damage Preventin Prcess Leader t elevate the issue, and The Damage Preventin Supervisr must grant apprval t mve frward. One r mre dangerus utility r high impact has nt been marked Cntact Damage Preventin Prcess Leader t initiate a stakehlder, and The Integrity, Damage Preventin, and Risk (IDPR) Manager must grant apprval t mve frward. Page 69 f 110

70 1.6.6 Pre-Excavatin Requirements (Stage 4) OQ Requirements The tables belw utline the Operatr Qualificatins (OQ) requirements when perfrming an excavatin. Sptter Cntracted Equip. Op. Operatr Equip. Op. Inspectr #8 Backfill [NCCER 39.0] Required Required Referred #542 Inspect Excavatin Excavatin and Backfilling [NCCER 32.0] Required Required Required Required Nte: Line Lcating is an OQ Skill - #1245 Lcate Undergrund Pipeline. Fr OPERATOR equipment peratrs, the fllwing peple prject skills (PPS) are required: Excavatin Pipeline [OPERATOR PPS] Operate Backhe [OPERATOR PPS] Operate Dzer [OPERATOR PPS] Excavatin Dcumentatin Refer t the fllwing dcumentatin fr jb respnsibilities and assigned tasks: Checklist Respnsible Persn Descriptin f Checklist Operatr Excavatin f Active Line Inspectin Checklist (frm) Cmpetent Persn Excavatin Safety Review List (frm) Operatr Excavatin Plan Questinnaire (frm) Inspectr Cmpetent Persn Prject Leader T be filled ut prir t every excavatin T be filled ut prir t bdily entering excavatins 48 inches and deeper. T be cmpleted and cmmunicated t stakehlders prir t excavatins. Nte: High Risk requires a written plan, and lw-risk excavatins require a verbal plan On-Site Requirements The fllwing infrmatin is required t be kept n the excavatin site by the Inspectr and/r Cntractr. One Call Reference Number, and Cntact names/numbers. Page 70 f 110

71 Other Requirements An Inspectr is required t be n-site fr 2nd party excavatins. Nte: If prject wrk is specifically fr adding sil r mats fr depth f cver purpses, the inspectr requirement may be waived at the IDPR Quality Assurance Prcess Leader's discretin. A Sptter is required t be n-site fr all mechanical excavatins Determine Tlerance Zne Tlerance fr All Excavatin Prcedures Refer t the Tlerance Zne illustratin fr guidance when marking the Tlerance Zne. Tlerance Znes - OPERATOR Operating States. Example: Pipeline is 10-inch nminal diameter Frm the pipeline centerline, calculate: 5 inch (1/2 the 10-inch nminal diameter) +24 inches (Tlerance Zne) = 29 inches n each side frm the center line. (Grand ttal 58 inches: acrss). The tlerance zne is the area clse t the pipe/facility that requires special care during excavatin. It is the area within 18 inches, 24 inches, r 48 inches (depending n the state) f the pipe. [insert peratr illustratin as applicable] Cmmence Excavatin (Stage 5) All Excavatin Prcedure The fllwing describes the excavatin methd and type f equipment used during an excavatin. The PL is respnsible fr verseeing all activities in this sectin. Step Prcedure 1 The PL is respnsible fr determining the excavatin methd selectin and equipment. 2 Determine Tlerance Zne, Refer t Tlerance Zne Sectin. Page 71 f 110

72 Step Prcedure Indiana and Luisiana Excavatin Prcedures Indiana and Luisiana-specific requirements in additin t All Excavatin Prcedure are: Prir t beginning any mechanical excavatin, Operatr, and/r third party lines must be visually identified by pt hling r sft digging, and If impractical prcess leader t initiate a stakehlder call Michigan specific requirements in additin t All Excavatin Prcedure are: Michigan Excavatin Prcedures Third party (Freign) lines must be expsed by sft digging in the 48-inch cautin zne unless the third party agrees t less strict requirement and will be n site during excavatin. Nte: Dcument excavatin plan n Operatr Excavatin Plan Questinnaire. Operatr lines fall under all excavatin prcedure abiding by the 24-inch tlerance zne. Cmplete risk evaluatin t determine what methd f excavatin/equipment type t use. (Example: High r Lw Risk) 3 4 High Risk - g t Step 4 Lw Risk - g t Step 5 Nte: Risk may change fr Crssings and Parallel If parallel pipeline r crssings are within planned excavatin area, then fllw tlerance zne graphic t expse pipe. Nte: Risk may change fr Sil Cnditins and Cmplex Excavatins If sil cnditins make the excavatin mre cmplex, invlve Damage Preventin Excavatin prcess leader t wrk thrugh an excavatin plan. High-Risk Excavatins Use Line Finders and Prbe rds t lcate lines as in Lcating and Marking Undergrund Pipelines (Operatr Prcedure reference). Actively Prbe the dig area t cnfirm lcatin and depth f assets. Nte: Active Prbing during excavatin is an Operatr Best Practice within the tlerance zne. Use Vacuum Excavatin (hydr r air) r anther sft digging methd. Page 72 f 110

73 If Sft digging is nt practical Then Use electrnic line finders and prbe rds, and ne r mre f the fllwing Risk Mitigatin techniques t verify r expse all lines in the excavatin area: Use Grund Penetrating Radar (GPR) Vacuum-excavate a bx arund the dig lcatin t identify utilities, and Sft Dig t psitively expse crssings and parallel pipelines in planned excavatin area. Mechanical excavatin may be used. Nte: Mechanical Excavatin within the tlerance zne, if apprved in excavatin plan,can cmmence after Operatr assets, crssings, and parallel pipelines are psitively identified. This can be dne with Active Prbing and digging utside the tlerance zne with Mechanical Excavatin t expse Operatr assets. If Variance frm prcedure is requested Then Cntact the Damage Preventin Excavatin prcess leader first t determine plan and then submit a Management f Change (MOC) request 5 6 Lw-Risk Excavatins Use line finders and prbe rds t lcate undergrund facilities. Actively Prbe the dig area t cnfirm lcatin and depth f assets. Nte: Active Prbing during excavatin is an Operatr Best Practice. Sft Dig inside tlerance zne t psitively identify an asset. Outside Tlerance Zne T initially expse assets in planned excavatin area start excavatin utside tlerance zne with mechanical equipment. The equipment peratr/sptter excavates utside the tlerance zne with extreme cautin. Rle Equipment Operatr/Sptter Sptter Step/Descriptin Step 1 Begins excavatin n ne side f the pipeline/utility. Physically lcates and visually cnfirms the pipeline t be excavated. Step 2 Prvides guidance r apprpriate layer depths and ensures Equipment Operatr excavates in shallw layers t help manage risks (4 inches - 6 inches) abve the pipe. Page 73 f 110

74 7 8 Equipment Operatr Sptter Inside Tlerance Zne Step 3 Identifies any large rcks r ther freign material that may damage the pipeline/utility cating inside the tlerance zne and/r abve the pipe. Step 4 Repeats prbing (Active Prbing) acrss the entire width and length f excavatin at apprpriate cut intervals t cnfirm the pipeline/utility and appurtenance lcatins Step 5 Decreases the depth f sil remval cuts and increases prbing when within 2 feet-3 feet f the assumed depth f the utility Step 6 Cnfirms the prbe is in cntact with the pipe/utility within the tlerance zne. T initially expse Operatr and Freign utilities in Planned excavatin area. Rle Excavatr Sptter Mechanical Excavatin Step/Descriptin Step 1 Sft dig inside the tlerance zne t expse the asset and freign utilities. Step 2 Mnitrs the pipeline fr defects, s the excavatr des nt damage the pipe. Reprts any damages dne t the pipe t the inspectr, such as: Nicks Scrapes, r Scratches. When assets are expsed, mechanical excavatin can cntinue inside tlerance zne if apprved in excavatin plan. Use extreme cautin when mechanical excavatin is in the tlerance zne. Nte: Cntact the DP Excavatin Prcess Leader fr ther excavatin cncerns, such as: Blasting, and Fang Teeth n excavatins. D nt use: Bucket side-cutters, r Tiger, fang-like, pick bucket teeth (See examples belw). Page 74 f 110

75 Rles and Respnsibilities During Excavatin The fllwing describes the rles and respnsibilities perfrmed during an excavatin. Wh Prject Leader Equipment Operatr/ Freman Respnsibilities Fllw the apprved excavatin plan. Nte: If the plan changes, the PL is required t cmmunicate changes t stakehlders. Operates excavatin equipment. Receives site infrmatin frm the PL. Understands and exchanges site infrmatin with site persnnel. Observes and hnrs ther utility markings. Re-checks alignment sheets and ther site dcuments fr: Line lcatins Appurtenances Bends, and Apprximate depth. Cmmunicates line lcatin and depth infrmatin fr all utilities with apprpriate n-site persnnel. Reminder: Excavatin within the tlerance zne (see graphic sectin) shall nly be dne by sft digging t expse the pipeline. Cmmunicates with the sptter. Page 75 f 110