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August 17, 2021 <br />Proposal No. 16-01103 <br />Mr. Kurt Russell, PE <br />Halff Associates <br />100 I-45 North, Suite 260 <br />Conroe, Texas 77301 <br />Subject: Proposal to Perform Geotechnical Evaluation <br />Willow Springs Bayou (B112-00-00) 100 ac-ft Detention Pond ILA Project <br />Southeast of Fairmont Parkway and Red Bluff Road <br />La Porte, Texas <br />Dear Mr. Russell: <br />We are pleased to present this proposal to perform a geotechnical evaluation for the subject project. <br />This proposal was prepared based on the information that we received from your office and it <br />outlines our scope of services, anticipated schedule, and time and materials fee for this phase of <br />work. <br />SITE AND PROJECT DESCRIPTION <br />We understand the City of La Porte in conjunction with the City of Pasadena plans to design and <br />construct a new detention pond to be located south of Fairmont Parkway and approximately ½-mile <br />east of Red Bluff Road in La Porte, Texas. There are two potential locations for the detention pond; <br />however, a site has not yet been determined at the time of this proposal. It is anticipated the new <br />detention pond will have an area of about 15 acres and will be about 10 feet deep with side slopes <br />of 4:1 (Horizontal:Vertical). <br />Based on a review of aerial photographs, the site appears to be heavily vegetated with trees and <br />brush. We anticipate clearing will be needed to access some of the boring locations and have <br />included a line item for clearing services within our cost estimate. <br />SCOPE OF SERVICES <br />Our field work and collection of samples will be in general accordance with Harris County Flood <br />Control District (HCFCD) 2010 guidelines. <br />2313 W. Sam Houston Parkway N., Ste. 119 | Houston, Texas 77043 | p. 713.973.8400 | www.ninyoandmoore.com <br /> <br />