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As a result, the CDBG-MIT project scope was revised to provide overland sheet flow
<br />paths and increase the storm sewer collection system capacity to provide a level of
<br />service to accommodate the Atlas-14 100-year rain event. Potential improvements
<br />include: increasing storm sewer pipe capacity and level of service from a 3-year rain
<br />event, to the Atlas-14 100-year rain event by replacing approximately 7000 LF of storm
<br />sewer pipe (various sizes, 24" - 54"); replacing the existing 3-foot wide inlet openings
<br />with inlets having a minimum opening of 5-feet; creating overland sheet flow path(s) by
<br />reconstructing/regrading approximately 46,700 SY of concrete paving within the project
<br />area generally bounded by: Fairmont Parkway to the south; Willow Springs Bayou to
<br />the west; CenterPoint Energy powerline corridor to the north; and Gladwyne Lane to
<br />the east. Additional project components include replacement of existing waterline and
<br />sidewalk. The estimated total project cost is $11,940,009.88. Based on evaluations of
<br />current construction costs, additional funding may potentially be required to complete
<br />the entirety of the project scope, which could result in the project being constructed in
<br />phases. The preliminary engineering report is expected to evaluate project alternatives,
<br />including respective opinions of cost and potential construction phasing options.
<br />Currently, the Brookglen Drainage Improvement project has a total project allocation of
<br />$4,275,000, which was prefunded within the City's FY19, FY20, FY21, and FY22
<br />budgets. The project is intended to continue to be prefunded until the total anticipated
<br />project cost is amassed, including all funding sources. Of the City's $4,000,000 CDBG-
<br />MIT grant award, $480,000 is allocated for engineering costs. Additionally, the City was
<br />awarded $2,900,023.28 in partnership funding from Harris County for drainage related
<br />project components, with the City's total contribution being $5,039,986.60.
<br />The City advertised Request for Qualifications (RFQ) #21602, in May 2021, for the
<br />provision of professional engineering services for various infrastructure rehabilitation
<br />projects. Twenty-four (24) statements of qualifications were received in response to the
<br />advertisement. An evaluation team consisting of the Assistant Director of Public Works,
<br />Utilities Superintendent, and CIP Manager evaluated each response. The top six
<br />respondents: Cobb, Fendley & Associates; Halff Associates; HDR Engineering; LJA
<br />Engineering; Lockwood, Andrews, & Newnam; and Schaumburg & Polk, were short-
<br />listed, to be utilized as needed. Short -listing multiple firms allows the work load to be
<br />distributed amongst various firms, as needed, to simultaneously complete projects.
<br />Halff Associates, Inc. is currently providing similar services to the City of La Porte for
<br />the Bayside Terrace Subdivision Drainage Improvement Project and the 100-acre
<br />Detention Pond Project, and has met performance expectations. Staff has negotiated
<br />the attached proposal for engineering service with Halff Associates, Inc. to provide
<br />preliminary engineering, final design, limited bidding and construction phase services
<br />in the amount of $1,128,589.00, including an initial authorization of $435,502.00 for
<br />preliminary engineering services, associated with development of a drainage impact
<br />analysis and construction recommendation(s). Preliminary engineering is expected to
<br />be completed within eight (8) months of authorization to proceed.
<br />Benefits:
<br />• Grant funds offset City's project related expenses.
<br />• Project focuses on the Drainage Committee's top prioritize project.
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