PERMFILE113268

• Permit No: C1981022
• IBM Index Class Name: Permit File
• Doc Date: 12/11/2001
• Doc Name: US ARMY CORPS OF ENGINEERS
• Section_Exhibit Name: Exhibit 2.03-E4 Part 9
• Media Type: D
• Archive: No

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aequlatory of=ice w:.1 review the prooasal and Zac:fy the
• applicant, narzaily in writi:sq, if the werk maY prat-ed "
under the author:zacion given in :his zQG. An .;nplicant may
not proceed •rith work until nati:ied by the Carps of
anaireers .
cae* os woRx: Tne fallowing dischargeE are au=hozised by this
regional general permit:
1. P3P$, Riprap is xaterial placed along an aza8ing Sant
t~ aravr It and reduce erosion. Riprap materia'_ must be durable
angular rock oz broken concre:s fre± from large quantities of
organic material and erodable material such as dirt and g~avel-
Rounded river cobble or stone is no„t acceptable as ria:aD and is
n~ authorized under this RPG. placement of riprap is authorized
provided: '
(al A single and comnlate bank :ipranoing ac=i~rity !s
icso than 1Cp0 Ee_t in length along a st.eambanic;
(b1 T:~e slpry~pinq is limitac to ilea flan an average
as too cubic yards of material per ranninq £oot placed Below the
~iaae of the or3lnery high water mezk o! rye stream:
(e) Tl+e size of the riprap shill be large enough td
withstand expected high floe velocities and tus~ulenca to praven~
the riprap from dislcdginq. If concrete is used, all exposed
re4ar aE other degradable Substances snail be r:.moved plies to
• placement. Large concrete slabs shall be broken Into Chunks prior
to placement to prevent slabs f:om being _arried away by high
°_lows.
2. Ga8I0H,~^. Cabiona are wire mesh baskets or cages filled
with rack which Can be placed along banks tv armor them. Rock
used as fiber must be clean, durable and lree from appreCiaDle
amount3 of sand or gravel. Rives cobble is an acceptable material
Ear filler provided the rive aebbie is large cnaugh to stay
within the mesh. The use of 9abien baskets is autharixad
pravidee:
(a1 Cabione shall be glaeed on well camgacted and
stable embankments;
(b) Gabion walls shall be angled back into the existing
bank at the upstream and downstream Coda to prevent undercutting;
(e) Gabions shall be at least 3 feet in width;
(d) Th0 gabion basket shall be made of galvanized
steel, vovea wire no smaller than 12 gauge;
la) .The limitations on the volume of material per
lineal root and oa the length of bank line specified for giera
above are applicable to this method a! bank protection; and

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