Jefferson County, MO Article VII General Guidelines For SWPPP Inspection Requirements And SWPPP Observation Report [1]

[1] Cross Reference – As to form for SWPPP observations, this form is on file in the county offices.

Section 505.920 SWPPP Inspection Requirements.

[Ord. No. 17-0244, 4-24-2017]

A. Without inspection and maintenance of siltation/erosion control measures, erosion and siltation control measures will not remain effective for long periods of time. Without proper training of inspection staff and effective records of results of inspections, it is difficult to determine what maintenance is required.

B. The Inspector Needs To Fully Understand The SWPPP. The SWPPP is more than just words and symbols on a piece of paper; it is a blueprint for contractors to follow. The inspector must know the implementation schedules, know where and when BMPs are to be installed, know what BMPs are to be maintained or eliminated and fully understand the limitations of BMPs.

C. The contractor needs to be informed by their inspector or an independent inspector, if used, of any non-compliance or violation issues. It is recommended that the inspector meet at least weekly with the contractor(s) to avoid problems that might lead to non-compliance issues. Also, the inspector must be cognizant of his/her responsibilities relative to identifying where modifications to the SWPPP are needed and recognize when it is necessary to involve owners, designers and regulatory personnel in modifications to the SWPPP or concerns about the operation of the SWPPP. Open and regular communication with all companies and agencies is essential.

D. The inspector also needs to be aware of appropriate contacts regarding maintenance of BMPs or other concerns. At some points of the project, the developer's land development personnel may be the sole contact, at other stages of construction, it may be necessary to communicate with personnel responsible for building construction.

E. General inspection guidelines follow to provide some additional guidance to the inspector. These guidelines are provided as a tool for the inspector's use and do not attempt to address all items that can be included on a specific SWPPP. The importance of reporting the results of inspections and follow up with appropriate personnel cannot be stressed enough.

Section 505.930 Inspector's Responsibilities.

[Ord. No. 17-0244, 4-24-2017]

A. The inspector is responsible for:

1. Inspecting the site to ensure proper installation, operation and maintenance of BMPs;

2. Performing inspections weekly and within twenty-four (24) hours during the workweek and forty-eight (48) hours on weekends of rainfall in excess of five tenths (0.5) inches;

3. Determining the overall effectiveness of the SWPPP;

4. Determining the need for additional control measures;

5. Promptly notifying the permittee responsible for operation and maintenance of BMPs of the deficiencies found during an inspection;

6. Notifying the permittee promptly of any situation requiring immediate action;

7. Noting corrective actions taken; and

8. Notify permittee to report any non-compliance, off-site discharge to the County.

B. The inspector should have detailed knowledge about the site specific SWPPP, particularly:

1. The location and type of control measures;

2. The construction requirements for the control measures;

3. Spill prevention and cleanup measures; and

4. Inspection and maintenance record keeping requirements.

C. The inspector should determine the following from the inspection:

1. The effectiveness of each BMP;

2. The maintenance that needs to be performed on the BMP; and

3. The need for revisions to the SWPPP.

D. General items to inspect:

1. BMPs installed in timely fashion;

2. BMPs installed/performing correctly;

3. Any damage to BMP noted;

4. Has maintenance been performed;

5. Is the BMP still effective;

6. Phasing being followed;

7. Note areas where grading activities have started/stopped;

8. Areas stabilized within fourteen (14) days of work being halted;

9. Removal of BMPs that are no longer required; and

10. Evaluate need for revision to SWPPP.

E. Areas To Inspect:

1. All disturbed areas;

2. All recently stabilized areas;

3. All locations where an erosion/silt control device is installed;

4. Off-site areas/outfall points including adjacent roadways;

5. Operational storm sewer inlets;

6. Material storage areas;

7. Trash collection areas;

8. Concrete washout areas; and

9. Temporary toilets on site.

Section 505.940 Typical BMP Inspection Items — Refer To Site SWPPP For Additional Items.

[Ord. No. 17-0244, 4-24-2017]

BMP	Installation	Maintenance
Construction entrance	Dimensions correct Proper sized rock used	Repair/replacement of sediment covered rock Removal of sediment on adjacent streets
Erosion control blankets	Slope seeded prior to blanket installation Material installed meets specification Blanket undamaged Blanket in intimate contact with the ground Properly stapled Secured at top of slope by approved method	Repair/replacement of damaged blanket Repair of eroded ground under blanket Reseeding of damaged areas Secure blanket to prevent undermining
Filter bag	Filter bag draining properly No tears or damage to the filter bag Discharged to secondary BMP	Removal of accumulated sediment Repairs to damaged parts of the bag Removal of the bag
Mulching	Coverage 80 — 100%	Replace/reapply deteriorated or spotty mulch Anchor to ground by crimping or tackifier if needed
Riser pipe outlet structure	Correct size rock used Top of riser pipe below the spillway and clear	Removal of sediment above cleanout level Repair/replacement of rock
Rock barrier check structure	Correct rock size used Spacing between structures correct Secured to prevent water flow underneath Ends high enough so no flow around ends Depression in the structure for overflow	Repair or replacement of structure Removal of sediment above cleanout level Repair of eroded ground/channel
Sediment traps	Outflow restricted to rip-rap area Structure capturing runoff Dimensions of trap correct Dimensions of outlet correct Inflow higher than the outflow Containment berms stabilized	Removal of any sediment above cleanout level Repair of damaged rip-rap Repair of containment berms
Seeding	Surface properly prepared (grading and fertilizing) Seed mixture meets specifications Area watered thoroughly	Regrade and reseed damaged areas Weed control if needed Area watered regularly
Silt fence	Location correct Stakes on downstream side of fabric Fabric secured in the ground Fabric secured to posts Fabric intercepting water flow	Repair/replacement of material not upright or intact Removal of sediment Removal of fence material
Slope drain	Earthen berm intact Spacing of the drains correct Water flowing into drainpipe Water discharging to stabilized area Pipe secured to the hillside	Repair breached sections of earthen berm Repair/reinforce protection at end pipe Repair or replacement of the slope drain
Surface skimmer	Proper connection to outfall pipe Trash screen installed and operating	Removal of debris on trash screen Repair/replacement of damaged floating unit Repair/replacement of damaged connector
Triangular silt dike	Overlapped per manufacturer specification Properly stapled Secured to prevent water flow under fabric Ends high enough so no flow around ends	Repair and replacement of structures Removal of sediment Repair of eroded ground Removal of structures
TRM in a channel	Channel seeded prior to blanket installation Material installed meets specification TRM undamaged TRM in intimate contact with the ground Properly stapled Secured at top of slope by approved method	Repair/replacement of damaged material Repair of eroded ground under TRM Reseeding of damaged areas Secure blanket to prevent undermining

Section 505.950 Variances.

[Ord. No. 17-0244, 4-24-2017; Ord. No. 22-0185, 3-16-2022]

A. Power to vary or modify the standards; contained in this Chapter, in accordance with exceptional conditions stated in Subsection (B) below.

1. The Public Works Director ("Director") shall have the power to vary or modify the standards contained in Section 505.500(A)(1) in accordance with exceptional conditions stated in Subsection (B) below;

2. The Planning and Zoning Commission ("Commission") shall have the power to vary or modify the standards contained in this Chapter, with the exception of standards outlined in Section 505.950(A)(1) detailed in accordance with exceptional conditions stated in Subsection (B) below.

B. To be granted a variance, an applicant must show the following:

1. The variance requested arises from a condition which is unique and peculiar to the property in question and is not created by an action or actions of the property owner or applicant.

2. Where, by reason of exceptional narrowness, shallowness, shape or topography or other extraordinary or exceptional situation or condition of a specific piece of property, the strict application of the provisions of the regulations complained of will constitute peculiar and exceptional difficulties to or exceptional and demonstrable undue hardship upon the owner of the property, as an unreasonable deprivation of use as distinguished from the mere grant of a privilege.

3. The variance requested will not cause substantial detriment to the public health, safety, morals and general welfare of the community nor will it cause damage to other property in the area.

4. The granting of the variance will not substantially impair the intent, purpose and integrity of the zone plan as embodied in the UDO.

C. In granting a variance, the Commission or Director:

1. May impose such conditions, safeguards and restrictions or require improvements upon the premises benefited by the variance as may be necessary to reduce or minimize any potentially injurious effect of the variance upon other property in the neighborhood and to carry out the general purpose and intent of these regulations.

2. Shall require the variance, where appropriate, to be recorded with the County Recorder of Deeds by the Planning Division and any costs of recording be paid by the applicant to be effective.

3. May require the applicant to guarantee the installation of required improvements. The guarantee shall be secured by an instrument acceptable to the County in an amount that shall be based on a general estimate of cost for the required improvements as determined by the Director and shall be enforceable by or payable to the County in the sum equal to the cost of constructing the required improvements. In place of a security instrument, the Board may set the effective date for the variance as subsequent to completion of the conditions, safeguards and restrictions.

4. In lieu of the secured guarantee or delayed effective date, the Commission or Public Works Director may specify a time limit for completion of the required improvements and in the event the improvements are not completed within the specified time, the Commission may, at a regularly scheduled meeting and after notice to applicant, revoke the approval of the variance.

5. Shall issue an order stating the findings of fact and conclusions of law for reaching the decision.

Section 505.960 Planning And Zoning Commission — Appeal. [1]

[Ord. No. 17-0244, 4-24-2017]

Any person, official or agency who is aggrieved by a final decision at the Planning and Zoning Commission with respect to this Chapter 505, and who desires to appeal the decision, shall file the appeal in the Circuit Court within thirty (30) days after the decision is made. When an order is adopted memorializing the decision, the appellant has thirty (30) days from the date the order is adopted to final an appeal.

[1] Cross Reference: As to form for SWPPP observations, this form is on file in the county offices.