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Mr. Duncan Jones Page 4 January 16, 2003 Standards will be prepared for non-standard design features that were not included on the previously approved Fact Sheet and GAD. The draft supplemental Fact Sheet will be submitted to Ca]trans for review, any comments will be incorporated, and a final Supplemental Exceptions to Design Standards will be submitting for approval. 4. Revise Drainal!e Report The Final Drainage Report previously submitted to Caltrans must be revised to reflect the new drainage patterns and storm water flows as a result of the profile grade changes. The changes to the on ramp and Island Parkway profiles require major revisions to the Drainage Report because most of the drainage patterns and storm drain systems have been significantly altered. In essence, we have to completely redo the Drainage Report that had already been finalized. This task includes development of new drainage patterns and shed maps, calculation of storm water flows, and storm drain pipe and culvert sizing. This new draft Drainage Report will be submitted to Caltrans for review prior to submittal of ] 00% PS&E, comments incorporated, and a revised final report will be submitted for approval. 5. Modifv the 65% Plans The 65% plans previously submitted to, and reviewed by Caltrans, will be revised to reflect the changed profiles for the diagonal on ramp, Is]and Parkway direct connection, northbound off ramp, and Marine Parkway. Many of these plan sheets require substantial changes or must be completely redone because of the profile revisions. Also, new plan sheets will be added to reflect the revised scope of work. At least 95 plans out of a total of 228 (4] %) included in the 65% submittal require significant revisions as follows: 0 Typical Sections (4 sheets revised) - typical sections for the northbound diagonal on ramp need to be completely revised because the diagonal on ramp is no longer elevated; typical sections for Island Parkway need to be completely revised as the roadway is now elevated; typical sections for Marine Parkway (east of Route ]01) need to be revised because the roadway must be raised to conform to the elevated Island Parkway; and minor revisions to the typical sections for the northbound off ramp because of the changes to the profile. 0 Layout Plans (4 sheets revised) - significant changes are required to the layout plans for the improvements east of Route] 0] because of the changed profiles. The diagonal on ramp was realigned to minimize reconstruction of the existing ramp and to minimize right of way acquisition from Oracle's property; all of the retaining walls on the east side were revised; a retaining wall is now required to protect the existing PG&E tower within the loop on ramp to northbound Route 10], and improvements are now required on Marine Parkway because of the reconstruction. In addition, the raised Island Parkway profile requires reconstruction of the Autobahn Motors property, including removal of their masonry block retaining wall, and raising the existing bridge approach slab. 0 Profile Plans (9 sheets revised) - all but one of the plan sheets have to be completely revised because of the profile changes and subsequent superelevation changes. The following roadway profiles have to be redesigned: diagonal on ramp to northbound Route ]0]; Island Parkway direct connection; Marine Parkway, loop on ramp to northbound Route 101; and northbound diagonal offramp.