PROJ00480

• Contract/PO #: C150015
• Contractor Name: Highland Ditch Company
• Contract Type: Loan
• Water District: 5
• County: Boulder
• Bill Number: HB 98-1189
• Loan Projects - Doc Type: Feasibility Study

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Was thoroughly plowed, but that no grass or vegetable matter was
removed therefrom.
The easterly half 01' the dam Vias built from materiaJ. taken
from: the borrow~pit looated eJ.ong the easterly and southeasterly
sides of the reservoir. This materiaJ. was supposed to be placed in
the dam in one foot layers, but on account of the consistency of the
same when taken from the borrow-pits it wa.s fOW1d impo5s;ble. to

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pJ.ace it 1n auah layers. 8.5 the materiaJ. came out in chunks. We
are infonned that it Vias placed in the dam in layera about two feet
thick, and that no provision fcr ccmpa.ot1ng the same was observed
other than the packing received from the wagons which were used to
transport the materiel from the excavator.
The westerly half of the, dam wae built of yellowish clay
materieJ. taken from the borrow-pita aJ.ong the westerly .end of the
dam, which seamed to work much better, and apparently haa packed
much more thoroughly than that in the easterly h8J.f of the dam, as
evidenced by the absence of seepage through the westerly helf of
the dam. We a.re :1nf'onned by the ,engineer that the structure was
finished 10,% higher than the plans celled for. to aJJ.ow for
shrinkage and settlement.
The materieJ. was placed in the dllIIl by two sub-contractor a
and at one point in the weaterly one-half, one of .the sub-oontract-
crs prosecuted his work faster than the other one, which cauaed a
break in the prOfile of the dam aa it waa carr1.ed up, .01' about ten
feet.

Water Was turned into the reserv01.r last year and the same

waa filled to a depth of 40 feet Vlhen the first seepage showed up

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