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Dames & Moore, 1999 - USDA Forest Service

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TABLE 4.2-4<br />

RIP-RAP CONDITION RANKING CRITERIA<br />

HOLDEN MINE RUFS<br />

DAMES 6 MOORE JOB NO. 17693405419<br />

Type<br />

Lithologic<br />

Composition<br />

Color Condition Predominant Size Maximum Size SchmidtHammcr Test<br />

Relative Quality<br />

(inches) (inches) n Range Median Grade<br />

A granodlorite white wth black large coherent blocks, non-fractured, smooth 48 to M3 72 10 52-59 56<br />

surface, some edges rounded<br />

quartz dior~te to beige whiie to light<br />

uneven semi.rough surface, edges flaking into<br />

plates. cracking along weathered fractures.<br />

quartz monzonite brown some fragmented into small angular blocks.<br />

some gruss<br />

24 to 36 c 48 20 24-42 37 fair<br />

highly fractured and weathered. rough, bumpy<br />

C dlonte to monzon~te tan brown many less<br />

surface, flaking into thin sheets, parts enttrely < 36 10 24-28 22<br />

yellow brown<br />

Ihan 12.<br />

mainly < 18<br />

gNSSlfled<br />

llght pink brown<br />

D latite to yellow<br />

small coherent blocks, smmth surface, non-<br />

6 to 12 c 36 10 58-68 62<br />

fraclured<br />

brown<br />

E rhyodacite light pate green small coherent blocks, smwth to semi-rough 6to 18 < 48 10 38-66 56 good to fair<br />

surface, mino1 cracking along fractures<br />

F ferricrete ' red brown to dark brown<br />

H \HoldenU)raR Final RI rpt\S-4Uabtes\4-2-4.1ds<br />

7/18/99 Page 1 of 1<br />

rough. bumpy surface, hard and indurate, to many less than 6. no tests no tests no tests<br />

c 42<br />

crumbly and disaggregated mainly < 24 performed performed performed fair to poor<br />

good<br />

- -- ~ --<br />

pwr<br />

good

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