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DocuSign Envelope ID: 80EOOD3A- BO6E -49BE- 9975- 1947B52242CA <br />Attachment A - Detailed Quote <br />Hazen <br />June 28, 2018 <br />Hazen and Sawyer <br />4011 Westchase Boulevard, Suite 500 <br />Raleigh, NC 27607 • 919.833.7152 <br />Christopher J. Sandt, P.E. <br />Staff Engineer <br />Planning & Inspections Department <br />Orange County <br />Engineering /Stormwater Division <br />131 W. Margaret Lane <br />P.O. Box 8181 <br />Hillsborough, NC, 27278 <br />Via email: csandt @orangecountync.gov <br />Re: Lake Orange Dam Inspection Services <br />Dear Mr. Sandt: <br />Hazen is pleased to submit our proposal to Orange County to provide inspection services associated with <br />Lake Orange Dam. The scope of services is based on the Request for Estimate dated June 7, 2018 and <br />subsequent email correspondence. <br />The purpose of the 2018 inspection is to make a general assessment of the condition of the dam and <br />appurtenances based on a visual inspection, and to identify any potential areas of concern that might <br />warrant closer examination and /or remedial attention. The level of effort that we propose is somewhat <br />elevated from that of the 2015 inspection. In addition, the County has requested an assessment of the level <br />of alkali silica reaction (ASR) within the concrete spillway and concrete side channel. <br />Scope of Services <br />As requested, Hazen has developed a list of tasks that represent the total scope of services indicated in the <br />Request for Estimate. It is our understanding that the County may select a limited number of tasks based <br />on available funding and follow up at a later date to complete the full scope of services. We have included <br />the service numbering from the Request for Estimate for your reference <br />Task 1 — Visual Inspection (Request for Estimate Items 1 & 2) <br />Qualified Hazen structural and dam engineers will complete a reconnaissance -level inspection of the dam <br />embankment, abutment contacts, and downstream areas to identify any indicators of excess seepage or <br />unusual embankment performance. In addition, the inspection team will inspect the above -water portion <br />of the intake structure, access bridge, and related equipment to identify any unusual conditions or areas of <br />concern. The team will also visually inspect the concrete spillway, including the 2011 repairs, to identify <br />any unusual conditions or areas of concern, inclusive but not limited to joint deterioration and evidence of <br />potential ASR. <br />hazenandsawyer.com <br />