---- FLOOD CONTROL AGENDA ITEM NO: , September 8, 2009 COUNTY OF ALAMEDA PUBLIC WORKS AGENCY DEVELOPMENTSERvrCESDEPARTMENT 951 Turner Court, Room 100 Hayward, CA 94545-2698 (510) 670-6601 FAX (510) 670-5269 August 25, 2009 The Honorable Board of Supervisors County Administration Building 1221 Oak Street, Suite 536 Oakland, CA 94612-4305 Dear Board Members: SUBJECT: APPROVE MODIFICATION NO. 1 TO CONTRACT NO. 2321 WITH WOOD RODGERS, INC., (PRINCIPAL: DAN MATTHIES; LOCATION: OAKLAND, CA) TO PROVIDE ADDITIONAL ENGINEERING SERVICES RELATING TO THE LEVEE CERTIFICATION PROJECT IN FLOOD CONTROL ZONES 2, 3A, 5AND6 RECOMMENDATION: Approve and authorize the President of the Board to execute Modification No. 1 to Contract No. 2321 with Wood Rodgers, Inc. (Principal: Dan Matthies; Location: Oakland, CA), to provide additional engineering services for the Levee Certification Project in Flood Control Zones 2, 3A, 5, and 6, increase contract amount from $2,475,088, to $3,660,627 (an increase of $1,185,539), and extend contract tennination date from December 31, 2010, to December 31, 2011. SUMMARY/DISCUSSION: In 2007, the Federal Emergency Management Agency (FEMA), as part of their Map Modernization Program, implemented a policy, to verify the certification status of those levees currently depicted on effective Flood Insurance Rate Maps (FIRM) as providing protection from the base (1 % annual chance) flood. If certification documentation is not provided, the landward areas of the levees will be. mapped as special flood hazard zones. FEMA offered Provisionally Accredited Levee (PAL) Agreements to local communities, providing the local communities two years to conduct and complete the certification process. The Alameda County Flood Control and Water Conservation District (District) signed PAL Agreements in August 2007, and hired a specialty consultant, Wood Rodgers, Inc., to evaluate each levee and prepare appropriate levee certification documentation, in accordance with Title 44 of the Code of Federal Regulations (CFR), Section 65.10 (44CFR 65.10). TO SERVE AND PRESERVE OUR COMMUNITY
Transcript
----FLOOD CONTROL AGENDA ITEM NO: , September 8, 2009
COUNTY OF ALAMEDA
PUBLIC WORKS AGENCY DEVELOPMENTSERvrCESDEPARTMENT 951 Turner Court, Room 100 Hayward, CA 94545-2698 (510) 670-6601 FAX (510) 670-5269
August 25, 2009
The Honorable Board of Supervisors County Administration Building 1221 Oak Street, Suite 536 Oakland, CA 94612-4305
Dear Board Members:
SUBJECT: APPROVE MODIFICATION NO. 1 TO CONTRACT NO. 2321 WITH WOOD RODGERS, INC., (PRINCIPAL: DAN MATTHIES; LOCATION: OAKLAND, CA) TO PROVIDE ADDITIONAL ENGINEERING SERVICES RELATING TO THE LEVEE CERTIFICATION PROJECT IN FLOOD CONTROL ZONES 2, 3A, 5AND6
RECOMMENDATION:
Approve and authorize the President of the Board to execute Modification No. 1 to Contract No. 2321 with Wood Rodgers, Inc. (Principal: Dan Matthies; Location: Oakland, CA), to provide additional engineering services for the Levee Certification Project in Flood Control Zones 2, 3A, 5, and 6, increase contract amount from $2,475,088, to $3,660,627 (an increase of $1,185,539), and extend contract tennination date from December 31, 2010, to December 31, 2011.
SUMMARY/DISCUSSION:
In 2007, the Federal Emergency Management Agency (FEMA), as part of their Map Modernization Program, implemented a policy, to verify the certification status of those levees currently depicted on effective Flood Insurance Rate Maps (FIRM) as providing protection from the base (1 % annual chance) flood. If certification documentation is not provided, the landward areas of the levees will be. mapped as special flood hazard zones. FEMA offered Provisionally Accredited Levee (PAL) Agreements to local communities, providing the local communities two years to conduct and complete the certification process.
The Alameda County Flood Control and Water Conservation District (District) signed PAL Agreements in August 2007, and hired a specialty consultant, Wood Rodgers, Inc., to evaluate each levee and prepare appropriate levee certification documentation, in accordance with Title 44 of the Code of Federal Regulations (CFR), Section 65.10 (44CFR 65.10).
TO SERVE AND PRESERVE OUR COMMUNITY
Honorable Board of Supervisors Page 2 August 25,2009
Wood Rodgers has completed and submitted all the evaluations, analysis and documentation required by 44 CFR 65.10, along with a remedial action plan. The District has forwarded this information to FEMA before the PAL certification submittal deadline of August 7,2009. However, Wood Rodgers is ul)able to provide final levee certification letters until all levee deficiencies have been addressed. Deficiencies were identified along Zone 2 Line K, Zone 5 Line A, and Zone 6 Lines Band C. No levee deficiencies were found in Zone 3A and those discovered in the other zones are not considered critical in nature.
Because Wood Rodgers is the Engineer of Record and will be signing the final levee certification letters, their involvement in the design of the repairs through construction monitoring is necessary. The design of some of the repairs will require geotechnical and structural specialty, in addition to construction monitoring during construction. District staff will design the general civil works, prepare final plans, specifications and estimates, acquire environmental permits and advertise the projects for bids.
Although the PAL deadline was August 7, 2009, it will take at least eighteen months before FEMA will be able to revise and publish the new effective Digital Flood Insurance Rate Maps. The District with assistance from Wood Rodgers expects to have all repairs constructed in time to have the new maps show the levees as certified.
SELECTION CRITERIA AND PROCESS:
A qualifications-based selection method as mandated by Government Code Sections 4525-4529.5 for selecting CIVIL ENGINEERING consultants was followed, during the selection process in August 2007. During the first two years of the contract, Wood Rodgers has already achieved 22.3% SLEB participation (exceeded the minimum 20% SLEB requirement) utilizing the SLEB firm, Cal Engineering and Geology, as a sub-consultant for the geotechnical exploration tasks. For the additional work, Wood Rodgers will continue to use Cal Engineering and Geology to perform some of the geotechnical related tasks, in the estimated amount of $200,000, approximately 20% of the additional work.
FINANCING:
There is no impact on the County General Fund. Funding for this additional work, in the amount of $1,185,539 is available and budgeted in Funds 21803, 21807, and 21808, Organizations 270311, 270351, and 270361, Account 610261, Program 50600.
c: Susan Muranishi, County Administrator Crystal Hishida-Graff, Clerk of the Board Audrey Beaman, Deputy County Counsel Patrick 0' Connell, Auditor-Controller Dan Matthies, Wood Rodgers, Inc.
DW/HA:mt
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MODIFICATION NO. I TO AGREEMENT WITH WOOD RODGERS, INC.
Modification No. 1 (the "Modification") is made as of September 8, 2009, by the Alameda County Flood Control and Water Conservation District, hereinafter referred to as the DISTRICT, and Wood Rodgers, Inc., hereinafter referred to as "CONSULTANT", with respect to that Professional Services Agreement (the "Agreement") dated December 4,2007, (Contract No. 2321).
RECITALS:
DISTRICT and CONSULTANT desire to modify the Agreement to provide for an increase in total contract amount and a time extension. Therefore, DISTRICT and CONSULTANT agree as follows:
1. The termination date of the Agreement shall be extended from December 31, 2010, to December 31, 20I 1.
2. The total contract amount will be increased from $2,475,088 to Not-to-Exceed $3,660,627, an increase of$1,185,539.
3. The CONSULTANT shall perform additional engineering services as shown in attached Exhibit lAo
All other unmodified terms and conditions of the Agreement shaH remain in full force and effect.
IN WITNESS WHEREOF, the parties have executed this Modification on the dates shown below their respective authorized signatures.
ALAMEDA COUNTY FLOOD CONTROL & WATER CONSERVATION DISTRICT CONSULTANT
By: President, Board of Supervisors County of Alameda, State of California
Principal Title
Approved as to form: Richard E. Winnie, County Counsel
By: ~~q 1Y<c:>.<,--' Deputy County unsel
580 2nd Street, Suite 200 Oakland, CA 94607
Address
By signing above, signatory warrants and represents that he/she executed this Modification in his/her authorized capacity and that by hislber signature on this Modification, he/she or the entity upon behalf of which he/she acted, executed this Modification.
Exhibit lA Additional Engineering Services - Stope of Work
Alameda County Levee Remediation Projects Zones 2, 5 & 6
Schedule • It is assumed final PS&E for work in all 3 Zones to be constructed in summer
2010 will need to be completed by early Jan 2010. All of the 2010 work will be bid and awarded by the end ofMay 2010 and be completed by Oct. 15,2010. If cutoff walls are needed to control seepage in the lower reaches of Zone 5 the required PS&E for that will be prepared in 2010) bid in early 2011 and constructed by Nov 201l.
• Separate PS&E packages/contracts will be prepared for each Zone. • WR's scope of work, schedule and budget will be approved and WR will be
authorized to proceed not later then mid Sept 2009.
Scope Zone 2 • Wood Rodgers has prepared Preliminary Plans (17 dwgs) of remediation
improvements along Sulfur Creek. The District is working to obtain the needed surveys for design plans by mid October 09 or sooner.
• Wood Rodgers will design the bypass channel) 3 new culverts under the UPRR and backfilling of the drainage ditch west of the pump station (seepage mitigation), and the necessary raising of the existing levee. WR will update the previously prepared Preliminary Plans to 90% and 100% completion.
o The scour hole and channel mitigation at the pump station outfall is not addressed by the plans.
o The scour hole downstream of the UPRR is not addressed • Kleinfelder will prepare a design memo in regards to boring and jacking pipe
under the UPRR. Kleinfelder may need to do 1 or 2 additional borings near the UPRR to detennine site conditions at boring under the RR.
• It is assumed WR will prepare a CLOMR and LOMR reflecting the proposed channel modifications.
• The District will prepare the contract specifications, Bid Fonn) etc. • The District will submit and process the plans of all work within the UPRR ROW
and will acquire the necessary permits from the UPRR needed to install the 3 new culverts under the RR.
\
• It is assumed that a closure structure and/or modifications to the outlet transition at the UPRR (to prevent flanking of the south levee) is not required and that the new culverts will lower the HGL sufficiently that the 100-yr WSE will be contained within the existing channel downstream of the UPRR. The District will conduct surveys to verify this.
• WR will prepare a amendment to the Certification Report providing additional with information on the remediation improvements and will certify P30 & P339
• The District will review and comment on the 90% Plans and WR will conduct an overall review of the 100% PS&E.
Scope Zone 5 • Two contract packages will be prepared; one for work to be completed by January
2010. A second contract will be prepared if cutoff walls are determined to be needed to control seepage in the lower reaches of Zone 5 for construction in 2011.
• Kleinfelder will conduct additional borings and geotechnical investigations of the seepage problems identified in the draft Geotechnical Report
o It is assumed that these new investigation will indicate the recommended mitigation measures identified in the draft geotechnical report are required for certification of the lower reaches (P4l8, P337 & P335)
o The other geotechnical deficiencies in the draft report will not be addressed as these did not involve recommended structural modifications.
• Anderson (ACE) will conduct additional investigations, analyses and prepare preliminary design sketches for recommended remediation measures needed to address identified deficiencies and to certify the Alameda Creek levees.
• Wood Rodgers will prepare PS&E of the remediation measures needed to certify all of the levee deficiencies along Alameda and Dry Creeks. These include: freeboard, flap gates, geotechnical & embankment protection.
• The costs include designing improvements for both the north and south levees, but construction phase costs for only the north levee.
• The District will prepare the contract specs (Wood Rodgers to provide technical specification for the cutoff walls).
• WR will prepare a amendment to the Certification Report providing FEMA additional with information on the remediation improvements and will certify the Alameda and Dry Creek levees upon completion ofthe remediation program
• Kleinfelder and ACE will also prepare amendments to their respective reports and will certify the Alameda Creek levees in regards to their respective areas.
• Mitigation Alternatives for seepage and/or freeboard problems west of the UPRR will not be evaluated further (cutoff, walls, seepage berms, sediment removal, levee breaching, etc)
Scope Zone 6 • Anderson (ACE) will prepare preliminary design sketches for recommended
remediation measures needed to certify the Torges Creek levees (Lines B and C) • The District will prepare PS&E of the remediation measures needed to certify all
levee P369. Only £1oodwall deficie~cies & embankment protection deficiencies will be addressed. Freeboard deficiencies have been previously addressed.
• WR and ACE will review and comment on the 90% plans and conduct an overall peer review of the 100% PS&E.
• WR will prepare a amendment to the Certification Report providing FEMA with additional information on the remediation improvements and will certify the levees upon completion of the remediation program.
• ACE will prepare an amendment to their reports and will certify levee P369 (Torges Creek).
• No deficiencies have been identified along levee P45l (the King & Lyons Business Park levee).
• No deficiencies have been identified along the south levee of Mud Slough between Fremont Blvd and P45l. This ievee is not being certified.
Environmental The District will provide all envirorunental services needed for the above remediation
. projects.
Right-of-Way • The District will provide all right-of way needed for the above remediation
projects, including identification of ROW needed, appraisals, negotiations, acquisitions, etc. ROW is likely to be needed for Zone 2 (at the UPRR).
•
Construction • The District will provide construction inspection and management needed. The
District will prepare all change orders that may be needed. • Wood Rodgers will provide construction inspection and management services as
needed for Zone 5 cutoff walls and prepare all change orders that may be needed. o The construction phase estimate is based upon 10,000 LF of 80-foot deep
cutoff wall. Double shifts, 6 days/week for 2.5 months (200 LF/day) • WR will attend a pre-bid meetings with bidders for each of the 3 contractslzones
and a pre-construction meeting with the 3 low bidders. • The WR team will review and comment upon any change orders, contractor
submittals and RFls the District forwards to WR,
• The District will provide any additional surveys required to design the above remediation measures
o The District will pot hole or otherwise locate the Mel pipeline at the UPRR
Levee Certification Project - Modificatio'n No.1
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Levee Certification Project - Modification No.1 (rS&E by WR)
Table lA - Cost Breakdown Details (Bank Protection Reh~b in 2010)
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Levee Cerlification Project - Modification No.1 (I'S&£ by County)
Table 1 • Cost Breakdown Details
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