TIC 2018-04-09 Item 2D - Agreement - 2018 Annual Small Drainage Program Design with KPG Inc

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The Consultant shall provide assistance to the City with preparation of a SEPA checklist and HPA application where required. A building permit will be acquired for the access and safety projects if required. No additional permits are anticipated. It is the Consultants understanding that none of the 2018 Small Drainage Program sites require biological assessments, additional permits beyond those listed, wetland delineations, geotechnical review, detention facilities, or water quality treatment facilities. The budget assumes a straightforward approval process with no special studies or extensive coordination. All work will be completed within City rights of way or easements and no easement acquisition is anticipated. In addition to the sites for the 2018 Small Drainage Program, the Consultant shall perform limited survey, geotechnical studies and preliminary design / feasibility analysis for the following sites: Site 6: Interurban Avenue S Rockery Drainage Rockery across from Golf Course driveway and parking lot lacks formal drainage above and behind rockery which causes water to flow onto the road and sidewalk creating significant icing problems. The Consultant shall prepare topographic survey and develop alternatives, cost estimate, and preliminary design to replace rockery with new wall system and tie in drainage from roadway and alley above. Final design will be completed in a future small drainage program. Site 7: S 148th Street / 42nd Avenue S Creek Inlet Structure Creek inlet structure is prone to plugging, causing water to flow onto 42nd Ave S and create localized flooding. Determine feasibility, cost, preliminary design, and easement needs for repair in a future small drainage program. Previously completed survey will be utilized for preliminary design. Site 8: 10349 Beacon Avenue S Resident has reported roadway runoff entering property and causing damage to septic system. Perform geotechnical study to determine if there is sufficient infiltration capacity and/or limited survey to determine alternate pipe routing and prepare preliminary design and cost estimate for repair in a future small drainage program. Aerial mapping will be used for preliminary design. City of Tukwila KPG, Inc. 2018 Small Drainage Program Page 2 of 5 March 1018 50