[R.O. 2011 § 510.090; R.O. 2009
§ 151.30; CC 1981 § 10-33(1) — (7); Ord. No. 73-47, 7-25-1973; Ord. No. 93-117, 6-2-1993; Ord. No. 98-339, 8-20-1998; Ord. No. 10-174 § 3, 7-18-2010]
A.
All excavations and grading operations,
whether or not a permit is required, shall comply with the following
standards:
1.
All excavations, grading or filling
shall have a finished grade not to exceed 3:1; except that embankments
less than three (3) feet in height shall be exempt therefrom if properly
mulched and seeded. Steeper grades are allowed if the excavation is
through rock or the excavation head wall or toe wall approved by the
Director of Public Works or his/her designee. If such walls exceed
a height of six (6) feet, a protective fence or barrier shall be required.
2.
Grading plans for sites that exceed one (1) acre of grading shall provide for sediment or debris basins, silt traps or filters, staked straw bales or other approved measures to remove sediment from runoff waters and avoid damage to adjoining properties, roads, ditches and storm sewers. The design is to be approved by the Director of Engineering or his/her designee. Temporary siltation control measures (structural) shall be maintained until vegetative cover is established at a sufficient density to provide erosion control on the site. (Refer to Section 510.100.)
3.
Time schedules for grading operations
shall be categorized as six (6) months or less, twelve (12) months
or less and twelve (12) months or more, depending upon the amount
of time that the soil shall be exposed or subjected to erosion under
normal weather conditions for the season.
4.
Finished grades.
a.
When grading operations are completed or suspended for more than thirty (30) days, permanent grass must be established at sufficient density to provide erosion control on the site. Between permanent grass seeding periods, temporary cover shall be provided according to the Director of Engineering or his/her designee's recommendation. (Refer to Section 510.100.)
b.
All finished grades (areas not to
be disturbed by future improvement) in excess of twenty percent (20%)
slopes (5:1) shall be mulched and tacked at the rate of one hundred
(100) pounds per one thousand (1,000) square feet when seeded.
5.
Truck and equipment access ways to
the site of the operation shall be located so as to minimize danger
to traffic and nuisance to surrounding properties. Such access shall
be kept either wet or oiled or treated with a chemical dust deterrent
or paved to the extent necessary to prevent any dust nuisance to surrounding
properties. All such access ways shall be clearly marked with signs
and shall be posted approximately two hundred (200) feet distant from
such access ways or other traveled areas. Such signs shall read "caution
trucks entering" and be of size, type, coloring, lettering and format
used by the City Street Department. Debris, soil and other materials
shall be removed daily from public streets and sidewalks.
6.
Provisions shall be made to accommodate the increased runoff caused by changed soil and surface conditions during the after grading. Unvegetated open channels shall be designed so that gradients result in velocities of two (2) fps (feet per second) or less. Open channels with velocities more than two (2) fps and less than five (5) fps shall be established in permanent vegetation by use of commercial erosion control blankets or lined with rock rip-rap or concrete or other suitable materials as approved by the designated official. Detention basins, diversions or other appropriate structures shall be constructed to prevent velocities above five (5) fps. (Refer to Sections 510.110 through 510.150.)
7.
The adjoining ground to the concerned
plot shall be provided with protection from accelerated and increased
surface water, silt from erosion and any other consequences of erosion.
Where it is necessary for the protection of such property to enter
upon private property for the purpose of taking appropriate protecting
measures, the owner shall obtain consent from the owner of such adjoining
property for such purpose. The applicant shall, at its own expense,
shore up and protect all buildings, walls, fences or other property
likely to be damaged during the progress of the grading and shall
be responsible for all damage to public or private property or highways
resulting from its failure to properly protect and carry out such
grading.
8.
All lots shall be seeded and mulched
or sodded before an occupancy permit shall be issued except that an
occupancy permit may be issued by the Building Official in cases of
undue hardship because of unfavorable ground conditions.
9.
A developer achieving Tier 1 status under the Green Point Rating System Guide established in Section 400.920 may make application to the Department of Public Works for the use of a Green Point Rating System Alternative to the requirements of this Section as set forth in the "Development Guide: Infrastructure Alternatives for St. Charles GPRS Projects" on file with the City Clerk.
[R.O. 2011 § 510.100; R.O. 2009
§ 151.31; CC 1981 § 10-33(8), App. A; Ord. No. 73-47, 7-25-1973; Ord. No. 93-117, 6-1-1993]
[R.O. 2011 § 510.110; R.O. 2009
§ 151.32; CC 1981 § 10-33(8), App. B; Ord. No. 73-47, 7-25-1973; Ord. No. 93-117, 6-1-1993]
A.
Outlets for diversions must be stable.
Stable outlets consist of grass waterways, earthen channels with capacity
adequate to prevent gully erosion, grade stabilization structures
or other practices as approved by the designated official.
[R.O. 2011 § 510.120; R.O. 2009
§ 151.33; CC 1981 § 10-33(8), App. C; Ord. No. 73-47, 7-25-1973; Ord. No. 93-117, 6-1-1993]
Placement and construction of a straw
bale barrier:
 |
[R.O. 2011 § 510.130; R.O. 2009
§ 151.34; CC 1981 § 10-33(8), App. D; Ord. No. 73-47, 7-25-1973; Ord. No. 93-117, 6-1-1993; Ord. No. 09-119, 6-18-2009]
A.
Maintenance.
1.
Filter barriers shall be inspected
immediately after each rainfall and at least daily during prolonged
rainfall. Any required repairs shall be made immediately.
2.
Should the fabric decompose or become
ineffective prior to the end of the expected usable life and the barrier
still be necessary, the fabric shall be replaced promptly.
3.
Sediment deposits should be removed
after each storm event. They must be removed when deposits reach approximately
half the height of the barrier.
4.
Any sediment deposits remaining in
place after the silt fence or filter barrier is no longer required
shall be dressed to conform with the existing grade, prepared and
seeded.
B.
Placement And Construction Of A Synthetic
Filter Barrier.
 |
[R.O. 2011 § 510.140; R.O. 2009
§ 151.35; CC 1981 § 10-33(8), App. E; Ord. No. 73-47, 7-25-1973; Ord. No. 93-117, 6-1-1993]
 |
[R.O. 2011 § 510.150; R.O. 2009
§ 151.36; CC 1981 § 10-33(8), App. F; Ord. No. 73-47, 7-25-1973; Ord. No. 93-117, 6-1-1993]
 |
[R.O. 2011 § 510.160; R.O. 2009
§ 151.37; CC 1981 § 10-34; Ord.
No. 73-47, 7-25-1973]
A.
All grading operations shall be restricted
as follows:
1.
Processing of any kind on the excavation
site or the erection or use of any structure thereon such as, but
not limited to, hoppers, washers, crushers or sheds; except simple
screens to remove oversize aggregates during loading shall be deemed
a commercial use and are prohibited except upon the issuance of a
special permit by the Director of Engineering or his/her designee.
2.
Except as otherwise provided in Section 510.030, no storage area may be created or maintained in connection with an excavation, grading or filling operation; except that under a duly issued permit, an owner or his/her contractor shall be allowed temporarily to store such material incidental to the operation, but such storage shall not be for a longer term than the term of the permit issued.
3.
It shall be unlawful to keep or store
any trucks, machinery or equipment on any property or street after
completion of the grading operation. All such trucks, machinery or
equipment shall be removed from such property within ten (10) days
after completion of the work or expiration of the permit, whichever
occurs first.
4.
Notification.
b.
The Director of Public Works or his/her
designee, upon such notification, shall make field inspections on
the site before rough grading, after final grading, before seeding
and at completion to determine if work in progress and the completed
operation have been performed in accordance with this Chapter.
5.
All pits, quarries, holes or other excavated areas shall be refilled with and no new filling operation shall be conducted with any material except clear, non-burnable fill containing no trash, refuse or harmful matter and such excavated areas and new filling operations shall be graded to the level of adjoining property or to an elevation from which all surface and other waters collected therein may find natural drainage therefrom. Stumps and logs may be used for fill material but only in accordance with standards and the requirements established by the Director of Engineering or his/her designee. Excess material shall either be removed from the premises or leveled with top soil and seeded as provided in Section 510.090(A)(7).
6.
It shall be unlawful to change, modify,
abolish or alter any of the debris basins, grass waterways, diversions
and other soil erosion control structures as permitted in a grading
permit; except with the prior consent and written approval of the
Director of Engineering or his/her designee.
