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<br />1-4
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<br />TABLE 1-3
<br />
<br />APPENDIX TO SECTION
<br />PHASE A SUMMARY
<br />
<br />SUMMARY OF COST BREAKDOWN
<br />
<br />The planning assignment was broken down into two parts, The first part (Phase A)
<br />was the development of alternative plans, and the second part was prelimi-
<br />nary design. An outline of the scope of work included in Phase A is as
<br />follows:
<br />
<br />ARVADA AND JEFFERSON COUNTY
<br />RALSTON AND LEYDEN CREEKS
<br />(Dollars)
<br />
<br />Description
<br />
<br />Traffic
<br />Costs
<br />
<br />Channe 1
<br />Improvement
<br />Costs
<br />
<br />Ut i Ii ty
<br />Relocation
<br />Costs
<br />
<br />Property
<br />Acquisition
<br />Costs
<br />
<br />1, Meet periodically with Urban Drainage and Flood Control District,
<br />City of Arvada, and Jefferson County representative to insure
<br />compliance with the services required by this agreement and to
<br />obtain data and general information,
<br />
<br />Total
<br />
<br />ARVADA
<br />
<br />2. Maintain contact and liaison with the U.S, Army Corps of Engineers,
<br />the U.S. Geological Survey, the Soil Conservation Service, and other
<br />pertinent agencies.
<br />
<br />Ralston Creek
<br />
<br />$1,860,210
<br />
<br />$7,181,540
<br />
<br />$ 348,070
<br />28,800
<br />$ 376,870
<br />
<br />4. Hydrological studies to determine the characteristics of the 2, 10,
<br />and 100-year floods with flood plains shall be prepared for present
<br />and future land use conditions along the channel,
<br />
<br />$ 9,563,790
<br />304,690
<br />$ 9,868,480
<br />
<br />$ 173,970
<br />7,560
<br />$ 181,530
<br />
<br />Leyden Creek
<br />
<br />110,830
<br />
<br />157,500
<br />
<br />), Storm drainage criteria of Urban Drainage and Flood Control District,
<br />City of Arvada, Jefferson County, and the State Engineers shall be
<br />utilized.
<br />
<br />ARVADA TOTAL
<br />
<br />$1,971,040
<br />
<br />$7,339,040
<br />
<br />JEFFERSON COUNTY
<br />--------
<br />Ralston Creek $1,103,270 $ I ,384,560 $ 27,800 $ 95,800 $ 2,611,430
<br />Leyden Creek 566,460 161,410 -0- 21,000 748,870
<br />JEFFERSON COUNTY
<br />TOTAL $1,669,730 $1,545,970 $ 27,800 $ 116,800 $ 3,360,300
<br />
<br />5. The Engineer shall perform the hydraulic calculations in order to
<br />define the water surface and flood plains for the various frequencies
<br />for future basin conditions, assuming no further development within
<br />the flood plain.
<br />
<br />6. The Engineer shall define drainage problems, flood hazard problems,
<br />and damage estimates, using the hydrology and hydraulics defined in
<br />4 and 5 above. The Engineer shall then develop alternate phases on
<br />a reach-by-reach basis, which will eliminate, insofar as possible,
<br />the drainage and flood hazard problems associated with the basin.
<br />
<br />7. Hydraulic calculations shall be made for developing and evaluating
<br />the best alternate plans as discussed in 6 above.
<br />
<br />RALSTON CREEK $2,963,480 $8,566,100 $ 201,770 $ 443,870 $12,175,220
<br /> 8. The Engineer shall consider presently known Federal Housing and
<br />LEYDEN CREEK 677 ,290 318,910 7,560 49,800 1,053,560 Urban Development, Federa 1 Insurance Administration flood insurance
<br /> pol icy.
<br />PROJECT TOTAL $3,640,770 $8,885,OlD $ 209,330 $ 493,670 $13,228,780 9, Consideration sha 11 be given to the operation and maintenance aspects
<br /> of the plans.
<br /> 10. Soi I characteristics of the drainage basin shall be taken into consider-
<br /> at ion..
<br />
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