[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]
A. 
Seeding Rates.
1. 
Permanent.
a. 
Tall Fescue: 30 lbs./ac.
b. 
Smooth Brome: 20 lbs./ac.
c. 
Combined: Fescue @ 15 lbs./ac. and Brome @ 10 lbs./ac.
2. 
Temporary.
a. 
Wheat or Rye: 150 lbs./ac. (3.5 lbs. per square foot).
b. 
Oats: 120 lbs./ac. (2.75 lbs. per square foot).
B. 
Seeding Periods.
1. 
Fescue or Brome: March 1 through June 1.
2. 
Fescue or Brome: August 1 through October 1.
3. 
Wheat or Rye: March 15 through November 1.
4. 
Oats: March 15 through September 15.
C. 
Mulch Rates. 100 lbs. per 1,000 square feet (4,356 lbs. per acre).
D. 
Fertilizer Rates.
1. 
Nitrogen: 30 lbs./ac.
2. 
Phosphate: 30 lbs./ac.
3. 
Potassium: 30 lbs./ac.
4. 
Lime: 600 lbs./ac. ENM*
*ENM = effective neutralizing material as per State evaluation of quarried rock.
[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.
1. 
Combination Diversion. Used at the top of a fill slope.
2. 
Earth Ridge Diversion. Used around the perimeter of a construction site.
3. 
Combination Diversion. General use.
4. 
Gravel Ridge Diversion. General use.
[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 § 510.160; 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.
a. 
The applicant shall notify the Director of Engineering or his/her designee of the following, when and as completed:
(1) 
Rough grading.
(2) 
Finished grading before seeding.
(3) 
All re-establishment and construction work.
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.
[1]
Cross Reference: As to penalty, § 510.340.