| #projects |
#Risks |
type |
delivery method |
size |
|
| 5 |
116 |
Interchange |
All |
All |
|
| Number |
Risk |
Frequency |
Prob |
Cost |
Schedule |
| 1 |
potential delays related to utilities / cta; coordination with the city |
100 |
0.90 |
|
4.32 |
| 2 |
historic structures may be present (sec. 106) - long approval process for cultural resources could affect schedule and design |
80 |
0.06 |
0.01 |
0.09 |
| 3 |
erosion control - i-285/sr400 interchange |
80 |
0.50 |
0.63 |
|
| 4 |
complex structure optimization on i-285/sr400 interchange |
80 |
0.40 |
-1.41 |
|
| 5 |
presence of hazardous materials-within existing or proposed right of way may increase project cost |
80 |
0.09 |
0.04 |
|
| 6 |
contractor claims potential |
80 |
0.70 |
1.79 |
|
| 7 |
green valley & cordelia faults may create significant geotechnical risks / hazards or delay approval of structural design of certain bridges if they cross one of the faults. |
60 |
0.13 |
0.03 |
|
| 8 |
construction packaging |
60 |
0.15 |
-4.00 |
-1.00 |
| 9 |
paleontological sites could be found within the project which would temporarily shut down construction |
60 |
0.08 |
0.00 |
0.17 |
| 10 |
agricultural mitigation will likely be required and could add additional reviews |
60 |
0.08 |
|
0.10 |
| 11 |
hazardous materials - sr400 cd lanes |
60 |
0.20 |
0.05 |
|
| 12 |
right of way certification process could be slow |
60 |
0.15 |
|
0.10 |
| 13 |
sr400 right of way |
60 |
0.67 |
2.92 |
|
| 14 |
transmission lines |
60 |
0.33 |
6.93 |
|
| 15 |
rail road crossing |
60 |
0.43 |
0.87 |
0.60 |
| 16 |
response from/coordination with usfws and noaa fisheries may be slow |
60 |
0.05 |
|
0.09 |
| 17 |
too few bids at time of construction could drive up project cost |
60 |
0.28 |
1.70 |
|
| 18 |
public involvement scope modification allowance - i-285/sr400 interchange |
60 |
0.48 |
0.84 |
|
| 19 |
temporary structures associated with traffic |
60 |
0.17 |
-1.24 |
|
| 20 |
potential delays to i- 290 and congress parkway work |
60 |
0.90 |
|
1.35 |
| 21 |
agency program management - i-285/sr400 |
60 |
0.75 |
-0.13 |
|
| 22 |
geotechnical |
60 |
0.33 |
1.78 |
|
| 23 |
owner's verification costs - i-285/sr400 interchange |
60 |
0.85 |
-0.50 |
|
| 24 |
opportunity design change for watertown plank road interchange |
40 |
0.30 |
-1.20 |
1.35 |
| 25 |
external - political factors change |
40 |
0.50 |
|
|
| 26 |
external - local communities pose objections |
40 |
0.25 |
|
1.13 |
| 27 |
right of way acquisition is more costly than expected |
40 |
0.35 |
14.91 |
|
| 28 |
technical - changes to noise abatement wall design |
40 |
0.50 |
|
|
| 29 |
technical - inaccurate assumptions on technical issues in planning stage |
40 |
0.50 |
|
|
| 30 |
potential environmental process delay of the record of decision. (decided not to model because risk is slow minimal) |
40 |
|
|
|
| 31 |
technical - right of way analysis in error |
40 |
0.50 |
|
|
| 32 |
technical - design incomplete |
40 |
0.90 |
24.19 |
|
| 33 |
higher real estate cost due to development, annexation, rezoning |
40 |
0.20 |
0.80 |
|
| 34 |
inflation risk |
40 |
0.80 |
14.40 |
14.40 |
| 35 |
may have to use in-line storage because of non-standard storm water treatment requirements from mmsd. |
40 |
0.70 |
10.50 |
|
| 36 |
opportunity to reduce traffic mitigation costs |
40 |
0.20 |
-1.00 |
|
| 37 |
external - new stakeholders emerge and demand new work |
40 |
0.50 |
|
|
| 38 |
pavement design on sr400 |
40 |
0.80 |
-2.40 |
|
| 39 |
external - influential stakeholders and serve own purposes |
40 |
0.50 |
|
|
| 40 |
construction - winter protection for concrete curing |
40 |
0.50 |
|
|
| 41 |
traffic signals |
40 |
0.80 |
1.44 |
|
| 42 |
lighting and its |
40 |
0.10 |
0.18 |
|
| 43 |
special waste |
40 |
0.90 |
2.38 |
|
| 44 |
drainage risks |
40 |
0.40 |
0.40 |
|
| 45 |
potential for addition of contracts |
40 |
0.70 |
2.45 |
|
| 46 |
advanced contract for closure and removal of i- 290 se ramp and wb- sb ramp |
40 |
0.90 |
3.15 |
2.25 |
| 47 |
duration of flyover contract |
40 |
0.90 |
|
|
| 48 |
retaining wall additions potential |
40 |
0.50 |
|
|
| 49 |
construction - weather delays |
40 |
0.50 |
|
|
| 50 |
construction - vibration foundation issues in adjacent buildings |
40 |
0.50 |
|
|
| 51 |
external - threat of lawsuits |
40 |
0.50 |
|
|
| 52 |
construction - buried man-made objects and unidentified hazardous waste |
40 |
0.50 |
|
|
| 53 |
row - objections to right of way appraisal takes more time and/or money |
40 |
0.50 |
|
|
| 54 |
pm - overlapping schedules; one contract delay causes chain reaction delays |
40 |
0.50 |
|
|
| 55 |
pm - agreements |
40 |
0.50 |
|
|
| 56 |
pm - pressure to deliver project on an accelerated schedule |
40 |
0.50 |
|
|
| 57 |
relocate union pacific rr bridge over i-94 near the zoo by dec 2014 ($15 million in estimate). risk = ws dot loses case for in-line replacement. |
40 |
0.60 |
-1.20 |
|
| 58 |
pm - unplanned work that must be accommodated |
40 |
0.50 |
|
|
| 59 |
organizational - new priority project inserted into program |
40 |
0.50 |
|
|
| 60 |
environmental - asbestos or lead paint |
40 |
0.50 |
|
|
| 61 |
increased excavation costs |
40 |
0.50 |
2.00 |
|
| 62 |
right of way closeout could be delayed if locals have limited resources to accept relinquishment of 680 on alt c |
40 |
0.05 |
|
0.10 |
| 63 |
traffic study may be a vulnerable element in the eir/eis (land development/growth inducement) |
40 |
0.10 |
|
0.30 |
| 64 |
i-285/sr400 interchange noise walls |
40 |
0.25 |
0.50 |
|
| 65 |
floodplain issues may require design modifications |
40 |
0.10 |
0.00 |
|
| 66 |
rwqcb permits may be slow and require late design changes during ps&e |
40 |
0.05 |
|
0.10 |
| 67 |
nepa(national environmental policy act) 404 coordination process may be slow due to delegation of nepa authority |
40 |
0.10 |
|
0.20 |
| 68 |
new requirements for air quality studies resulting from recent court cases, legislative actions (e.g., hra and ab 32) and county requirements are not completely defined but will likely require additional analyses by ct. |
40 |
0.20 |
|
0.20 |
| 69 |
expected funding may be restricted in future |
40 |
0.10 |
|
3.33 |
| 70 |
gab design optimization - sr400 cd lanes |
40 |
0.30 |
-0.15 |
|
| 71 |
sr 400 lanes noise walls |
40 |
0.50 |
-1.00 |
|
| 72 |
community issues, especially around noise or right of way impacts, may generate some local resistance to the project |
40 |
0.05 |
|
0.10 |
| 73 |
colonial pipeline utility |
40 |
0.80 |
0.40 |
|
| 74 |
retaining wall optimization - sr400 lanes |
40 |
0.50 |
-0.50 |
|
| 75 |
nepa support (post-let) on sr400 lanes |
40 |
0.75 |
0.38 |
|
| 76 |
nepa support (post-let) on i-285/sr400 interchange |
40 |
0.75 |
0.38 |
|
| 77 |
additional mobilization and traffic control on sr400 lanes |
40 |
0.50 |
1.50 |
|
| 78 |
rock excavation |
40 |
0.20 |
0.05 |
|
| 79 |
botany, wetlands, fairy shrimp and cc goldfields approvals can be slow; may affect design; survey protocols need to be agreed upon and can be slow |
40 |
0.10 |
|
0.20 |
| 80 |
project wide delay |
40 |
0.90 |
|
10.80 |
| 81 |
construction staging to provide acceptable traffic flow will be a challenge |
40 |
0.05 |
|
0.07 |
| 82 |
short construction seasons may overly constrain project construction |
40 |
0.10 |
|
0.30 |
| 83 |
potential effects on special-status species and habitat could result in the need for mitigation sites for biological resources be identified before the pa/ed phase can be completed (i.e., before regulatory agencies issue the bo). |
40 |
0.15 |
0.00 |
|
| 84 |
legal challenge (successful or not) to final eir/eis could delay construction and be costly. |
40 |
0.10 |
|
0.30 |
| 85 |
failure to adequately plan for staging & phasing of utilities could cause delays before and during construction |
40 |
0.10 |
|
0.13 |
| 86 |
cost estimate may fluctuate significantly prior to bid because cost and availability of materials is hard to estimate this far out |
40 |
0.10 |
0.20 |
|