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F-11. BIDS AND AWARD FOR WHITE TANKS FLOOD RETARDING STRUCTURE NO.3 REMEDIATION PROJECT PHASE 2 Authorize the Flood Control District of Maricopa County (District) to issue an Invitation for Bids for Contract FCD 2008C031, White Tanks Flood Retarding Structure (FRS) No. 3 Remediation Project – Phase 2 (Project). Award the contract to the lowest responsible bidder if the bid is not more than ten percent over the engineer’s estimate. The District has completed alternative studies, which address all issues inclusive of a recently identified earth fissure risk zone. The selected alternative is a dam modification, which consists of modifications to the existing dam embankment, outlets and emergency spillway to address all dam safety issues. The White Tanks FRS No. 3 Remediation Project is being constructed in three phases. Construction of Phase 1 and 3 have been completed. The project is located in Supervisory District 4. (C-69-10-020-5-00)

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F-7. CHANGE ORDER WITH SKANSKA USA CIVIL WEST ROCKY MT. DIST, INC. FOR WHITE TANKS FRS NO. 3 FLOOD RETARDING STRUCTURE REHABILITATION PROJECT PHASE 2 Approve Change Order No. 6 with Skanska USA Civil West Rocky Mt. Dist, Inc. (2008C031 in the amount of $178,111.58 for a revised total contract amount of $8,840,947.52. The purpose of this Change Order is to Change Order #6 addresses several issues. A-slope erosion repairs. B- repairs to smaller slope erosion that resulted from weather. C- adding riprap at the spillway training dikes. D-track walking the embankment side slopes to prepare for hydroseed and rock mulch. On October 07, 2009, (Agenda C-69-10-020-5-00), the Board authorized the District to issue an Invitation for Bids (IFB) and award a contract to the lowest responsible bidder. Change Order No. 6 (CO) contains four issues that affect rehabilitation of the FRS embankments: CO6-A, in the amount of $ 75,839.14, is required to repair rainstorm erosion damage done to the existing embankments before the Project contract was awarded. The Engineer of Record prepared several sketches to detail the scope of the repairs required. CO6-B, in the amount of $ 6,962.33, is intended to address repairing numerous oversize rain-caused erosion rills on the downstream slope of the existing embankment fill. The Contractor was advised in the field to fill and compact the existing rills prior to finish grade activities. CO6-C, in the amount of $40,610.50, is necessary to increase the depth of the spillway apron and training dike riprap per directions furnished by the Engineer of Record. CO6-D, in the amount of $ 54,699.61, was instituted to enhance the surface preparation of the embankment slopes for the subsequent application of hydroseeding and colored rock mulch. The project is located in District 4. (C-69-11-058-5-00)

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F-3. CHANGE ORDER WITH SKANSKA USA CIVIL WEST FOR WHITE TANKS FRS NO. 3 FLOOD RETARDING STRUCTURE REHABILITATION PROJECT PHASE 2 Approve Change Order No. 10 with Skanska USA Civil West (2010C031 in the amount of $777,432.24 for a revised total contract amount of $9,618,379.76. The purpose of this Change Order is to authorize compensation to the contractor for the reconciliation of actual (as-built) bid quantities and for negotiated contract close-out issues. (Supervisorial District 4). On October 07, 2009, (Agenda C-69-10-020-5-00), the Board authorized the District to issue an Invitation for Bids (IFB) and award a contract to the lowest responsible bidder. Change Order No. 10 (CO) contains six issues that will reconcile as-built bid quantities and reimburse the contractor for negotiated contract close-out issues in the total amount of $ 777,432.24 as compiled here: CO10-A adjusts the contract amount for the net value of bid quantity overruns and under runs in the amount of $ 956.89; CO10-B reimburses the contractor for additional excavation and disposal of excess borrow material in the amount of $ 284,958.97; CO10-C reimburses the contractor for cost overruns in construction quality control material testing in the amount of $ 82,924.95; CO10-D reimburses the contractor for additional imported filter material in the amount of 278,850.00; CO10-E reimburses the contractor for additional effort that was required to maintain the neat interface of filter and fill material in the amount of $ 127,193.84; CO10-F reimburses the contractor for maintaining builder’s risk insurance coverage beyond the completion of the work in the amount of $ 2,547.59. This Agenda Item impacts Supervisorial District 4. (C-69-12-027-5-00)