Compare two results

Relevant Risks to this Type of Project

#projects #Risks type delivery method size
4 147 All All Less than 500 M
Number Risk Frequency Prob Cost Schedule
1 market conditions at bid time different than assumed in the base 100 0.40 0.3
2 delayed utility relocations (other than pg&e transmission) 100 0.22
0.80
3 funding delays (e.g., due to delayed bond issuance) 100 0.50 1.00 12.00
4 legal challenges 100 0.18 0.63 1.85
5 additional mitigation for construction impacts (not captured elsewhere) 100 0.50 1.50
6 design concept not accepted by the public requiring resubmission and schedule delay 100 0.49 1.74 0.56
7 issues associated with environmental permits 100 0.50 0.88 1.53
8 other changes to pavement design assumptions (not captured separately) 100


9 additional hazardous or contaminated materials identified during preliminary investigation 100 0.50 0.25 1.50
10 environmental, conservation easement to mitigate for other waters impacts cannot be obtained 75 0.75 1.25 3.75
11 preferred construction technique for the girard road depressed section may not be allowed due to artesian conditions and concerns by the presidion trust about groundwater disturbance and proximity to buildings. 75 0.63 5.51 0.93
12 the proposed tunnels could be too long and require a full mechanical ventilation. 75 0.90 1.00
13 aggregate minor risks (assumed to be ~20% of aggregate major risks - listed below) 75


14 changed bridge foundation design due to geotechnical information (other structures than addressed separately) 75
-1.50
15 demolition delayed due to environmental factors 75 0.50 1.58 0.47
16 delayed agreements or approvals from other stakeholders (e.g., kern county) 75


17 additional cost for commercial right of way 75
1.00
18 all segments weather related interruptions to construction 75 0.58 0.29 2.33
19 miscellaneous change orders and claims (not captured elsewhere) 75
2.00
20 racine railroad crossing 75 0.10 0.01 1.20
21 delayed completion of final environmental documentation / pr (incl. section 106 / shpo process) 75 0.50
1.50
22 extraordinary change in fuel prices (in addition to escalation and base uncertainties) 75
0.50
23 delayed approval of design exceptions 75 0.70 3.92 1.31
24 the request from golden gate bridge district (ggbd) to add a merchant ramp design to doyle dr 75 0.30 1.51 0.84
25 contaminant levels greater than anticipated leading to increased costs and potential schedule delay 75 0.50 1.73 0.47
26 anticipated but as yet undetermined revisions to traffic and life safety code could necessitate redesign for tunnel and potentially additional cost for tunnel safety systems. 50 0.70 6.98
27 tsunami criteria revised necessitating redesign of structures, recommendation from hydraulics 50 0.50 1.26 0.47
28 contaminant levels greater than anticipated leading to increased costs and potential schedule delay 50 0.50 0.99 0.23
29 integrated design team too large resulting in unallocated scope or lack of coordination 50 0.50 1.26 0.47
30 noise and vibration from construction (ed contemplates most restrictive condition) 50 0.50 0.45
31 cultural resources programmatic agreement not completed on time resulting in a project delivery milestone delay 50 0.40 1.05 0.37
32 presidio trust is nonresponsive leading to delays in project delivery milestones 50 0.50 5.04 1.87
33 federal land transfer is unenforceable and results in delays to the project and increased cost. 50 0.50 5.04 1.87
34 integration with presidio trust (pt) could facilitate pt's internal decision making and save time and cost 50 0.70 7.84 2.61
35 the risk of the siesmic status of the marina viaduct giving that the 10 years interm of 1995 50 0.10

36 the pt demand not to treat them as a private property rather focus on the sufficiency issue. 50
40.00
37 the demand of nps to design the structural excavation to provide a symmetric seepage of the natural water flow (cross tunnels) 50
0.50
38 the risk of the rehabilitation condition of the presidio viaduct due to the steel member erosion. 50 0.30

39 amongst all the design exception the "inside" shoulder exception and the potential justification. 50 0.90
2.70
40 the intended submittal list of the "design exceptions" for alternative "5" and potential taking it for granted 50 0.80
2.40
41 the "purpose and need" statement inclusion of the access concept to doyle drive design 50 0.45
1.50
42 the pursing of spur of the "half circle" drive design concept to the eastern end of the proposed doyle dr 50
0.07
43 the veteran cemetery categorizing by federal regulation as an "a" or "b" for scarcity purposes 50 0.30
0.00
44 cultural resources (native american burials, artifacts, historic bldg foundation) discovered during construction/utility relocation leading to schedule delay and increased cost. 50 0.30 0.84 0.28
45 all segments drought conditions limit the availability of water needed to perform construction realted activities 50 0.50 1.50 0.01
46 raise profile of girard depressed section 50 0.50 4.50
47 may be able to negotiate with ggdthd to reduce or eliminate payments for lost revenue reducing project costs 50 0.50 2.25
48 oneida south storm sewer tie in 50 0.25 0.13 0.00
49 real estate cost contingency 50 1.00 2.50 0.00
50 right of way litigation 50 1.00 1.60 0.00
51 pcb removal requirements 50 0.50 0.25 0.00
52 program delay or change 50 0.25 0.01 3.00
53 additional wick drains at racine 50 0.90 2.25 8.10
54 racine rd access alternatives 50 0.75 0.38 0.00
55 llbdm pcb capped area permitting 50 0.20 0.00 0.20
56 extra earthwork costs 50 0.50 0.50 0.00
57 utility second moves & utility accelerated schedule adjustments 50 0.75 0.75 0.00
58 potential noise wall in nw quadrant of system interchange 50 0.50 0.30 0.00
59 geotech related costs - settlement 50 0.25 0.25 0.25
60 oneida storm water separation 50 0.10 0.15 0.00
61 contract modifications (cco's) 50 1.00 19.30 0.00
62 scheduling and funding, stip funding delayed and not available during the anticipated funding year 50 0.38 0.75 9.00
63 environmental, cholame segment ca tiger salamander found within project area 50 0.05 0.50 0.20
64 environmental, all segments unanticipated cultural findings unearthed during construction 50 0.38 0.16 1.00
65 right of way and utilities, wye segment issues negotiating with hearst ranch re: potential conservation easement 50 0.25 0.25 0.75
66 right of way and utilities, all segments utility relocation does not occur prior to construction 50 0.50 0.50 1.50
67 right of way and utilities, all segments right of way unable to certify the project before advertising 50 0.25 1.00 1.50
68 design, segment bicycle access at 41/46 interchange may require additional facilities to accommodate movements 50 1.00 1.00 0.02
69 pavement, all segments-crcp, superpave pavement spec changes late in ps&e stage 50 0.25 0.75 0.75
70 structures and geo tech, soils 50 0.30 0.60 0.90
71 transfer risk of haz waste (hazardous materials) to army 50 0.15 0.75
72 recycle doyle drive for subbase and fill - opportunity pt relax restrictions on fill 50 0.70 3.92
73 the purpose and need statement has been diluted to add many "non- transportation" issues that has been inserted by nps & presidio trust 50
15.00
74 alternative (5) design proposal in the "half circle" drive to force the construction of a parking lot for the palace of fine art, due to the intake of the drive to the ground level parking 50
2.25
75 presidio trust (pt) and the veteran affair (va) on noise reduction measure of the future facility close to cemetery 50
1.30
76 kern river water level higher than anticipated 50


77 archaeological and paleontological discoveries during construction 50


78 changed assumptions for aesthetics and landscaping 50


79 re designa of sr 99 as interstate (design change) 50


80 nps(national park service) insistence to treat a 100% of the storm water during and after construction 50
3.60
81 contract procurement delays (e.g., addenda, protests, re-bids, etc.) 50


82 changed project phasing, packaging or delivery method 50


83 changed traffic control and staging requirements 50


84 oil storage relocation issues at carrier canal 50
1.50
85 utility work required outside of approved environmental area 50 0.25
0.75
86 unquantified utility costs 50


87 opportunity for retaining wall optimization with respect to right of way 50


88 changed capacity and operational mitigation driven by further traffic analysis 50
2.25
89 loss of goodwill 50
0.5
90 right of way acquisition delays (due to volume and complexity, etc.) 50 0.25
1.5
91 metropolitan bakersfield habitat conservation plan (mbhcp) expiration (habitat bank) 50 0.5
1.5
92 unanticipated hazardous materials discovered during construction/ utility relocation leading to increased cost and potential schedule delay 50 0.5 0.63 0.233333333333333
93 changed design criteria 50


94 additional mitigation for vertical clearance on existing structures 50


95 delayed completion of right of way mapping and appraisals 50


96 national park service (nps) persist on tennessee hollow expansion that will require change in design 50
0.2
97 nps (national park service) presist on using a non-emission construction equipment for air quality control as directed by nps directive memo 50
14
98 opportunity for additional design innovation (by designer and/or contractor, not captured elsewhere) 50


99 opportunity for contractor-provided borrow source 50


100 delays of approval of longitudinal encroachment 50


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