(14)AR 091807 Randall Basin - Laserfiche WebLink

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ITEM #14 CITY OF COLTON AGENDA REPORT FOR THE CITY COUNCIL MEETING OF SEPTEMBER 18, 2007 TO: HONORABLE MAYOR AND CITY COUNCIL MEMBERS FROM: AMER JAKHER, P.E., PW DIRECTOR / CITY ENGINEER SUBJECT: APPROVE EXECUTION OF THE COOPERATIVE AGREEMENT BETWEEN CITY OF COLTON, CITY OF SAN BERNARDINO, AND THE SAN BERNARDINO COUNTY FLOOD CONTROL DISTRICT, DRAFT 3, FOR THE CONSTRUCTION OF DRAINAGE IMPROVEMENTS TO RANDALL BASIN. DATE: SEPTEMBER 11, 2007 BACKGROUND: As a result of the construction of the San Bernardino County Arrowhead Regional Medical Center in the City of Colton, the San Bernardino County Flood Control District (District) was conditioned to enlarge the capacity of the Randall Basin to accept additional flows and construct the improvements necessary for a detention basin. Randall Basin fronts Randall Avenue and lies within the cities of Colton and San Bernardino; the northern half of the basin lies within the jurisdiction of the City of San Bernardino and the southern half lies in the City of Colton. To obtain an increased capacity for the basin the following scope of work will be necessary: 1) excavation of approximately four (4) feet of sediment in the existing Randall Basin to increase the area of the basin bottom by 1.07 acres -2) relocation of the existing southern basin embankment fifteen (15) feet to the north;3) construction of a concrete outlet -4) construction of a spillway/,5) installation of a 48 - inch RCP inlet structure within the basin anJ'6) installation of a 66 -inch RCP outlet structure within the basin. ANALYSIS/DISCUSSION: The Council has been presented with the cooperative agreement between the City of Colton, City of San Bernardino and San Bernardino County Flood Control District (SBCFCD) on two previous occasions. On July 17, 2007, Council authorized the execution of the first draft of this cooperative agreement between the San Bernardino County Flood Control District, City of San Bernardino and the City of Colton for improvements to Randall Basin. This agreement established a cost share relationship for the construction of the needed improvements to Randall Basin between the three entities listed above. After additional review by the District's bond council the District redrafted this agreement and requested the City of Colton approve the second draft of the agreement. Council approved the second draft of this agreement on August 21, 2007. The redrafted version of this agreement stated that the agreement's pledge, as it involves the City of Colton, is secondary to the bonds issued by the County; this added language is standard in agreements between agencies that issue bonds. Since the approval of the second draft, the SBCFCD notified the City of Colton