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Stormwater runoff from lots or adjacent properties shall not be carried over cut or fill slopes steeper than five (5) horizontal to one (1) vertical (5:1). Such runoff shall conform to the provisions of Subarticle 5.8 of the Grading Manual.
(Ord. 349 § 4 (part), 2006: Ord. 346 § 4 (part), 2006)
A. Asphalt concrete pavement for surfacing of parking lots, private streets or other similar uses shall conform to the provisions of Subarticle 5.9 of the Grading Manual unless otherwise approved by the city engineer.
B. The site soil engineer or special inspector shall inspect the construction of asphalt paved areas and verify to the city engineer that the work has been performed in compliance with the provisions of this section.
(Ord. 349 § 4 (part), 2006: Ord. 346 § 4 (part), 2006: Ord. 97 § 1 (part), 1993: Ord. 3 § 1 (part), 1991: prior code § 8.12.100.832)
All site development and precise grading shall be designed to provide access to all entrances and exterior ground-floor exits and to normal paths of travel in accordance with California Disabled Access Regulations (California Code of Regulations, Title 24, Part 2).
(Ord. 349 § 4 (part), 2006: Ord. 346 § 4 (part), 2006)
A. Construction Runoff Compliance.
1. All individual proposed construction and grading projects shall implement measures to ensure that pollutants from the site will be reduced to the maximum extent practicable (MEP) and will not cause or contribute to an exceedance of water quality objectives. All grading and construction activities will be in compliance with applicable ordinances, permits and other applicable requirements.
2. The permittee shall adhere to the following requirements:
a. Develop and implement a plan to manage stormwater and non-stormwater discharges from the site at all times in accordance with Subarticle 6 of the Grading Manual. Projects disturbing one (1) acre or more of soil are required to generate a Stormwater Pollution Prevention Plan (SWPPP) per the State General Construction permit;
b. Minimize grading or conduct phased grading operations during the wet season and coincide grading with seasonal dry weather periods to the extent feasible. If grading does occur during the wet season, implement additional BMPs for any rain events which may occur, as necessary for compliance;
c. Emphasize erosion prevention as the most important measure for keeping sediment on site during construction;
d. Utilize sediment controls as a supplement to erosion prevention for keeping sediment on site during construction;
e. Minimize exposure time of disturbed soil areas;
f. Temporarily stabilize and reseed disturbed soil areas as rapidly as possible;
g. Permanently re-vegetate or landscape as early as feasible;
h. Stabilize all slopes;
i. Provide evidence of existing permit coverage of the general construction permit, if applicable; and
j. Implement the applicable requirements of the city's Standard Erosion and Sediment Control Notes, as identified in the Appendix of the Grading Manual.
Note: The above requirements are applicable to all construction sites regardless of whether the construction site is subject to the general construction permit or other individual NPDES permit.
B. Erosion and Sediment Control Plans Required.
1. No grading work will be allowed on any single grading site under permit unless the city engineer has approved an erosion and sediment control plan.
2. All grading plans, regardless of the date of submittal, shall include an erosion and sediment control plan designed to limit erosion of all disturbed portions of the property and to minimize the transport of soil onto downgrade perimeters, curbs, gutters, streets, drainage inlets, private and public stormwater conveyance systems, environmentally sensitive areas, adjacent properties and watercourses in accordance with the provisions of this chapter and Subarticle 6 of the Grading Manual.
3. All erosion and sediment control best management practices (BMPs) outlined in the Stormwater Pollution Prevention Plan SWPPP), if applicable, will be shown on the erosion and sediment control plan and implemented prior to October 1 of each year.
C. Erosion and Sediment Control Systems.
1. The permittee shall be responsible for control of erosion and sediment discharge on and from all areas of grading until acceptance of the completed grading by the city engineer. This responsibility extends to completed and occupied lots. Necessary materials shall be available on site and stockpiled at convenient locations to facilitate rapid construction of temporary devices, with equipment and workers for emergency work available at all times during the rainy season.
2. No grading work shall be allowed on any site when the city engineer determines that erosion, mud flow or sediment discharge may adversely affect downstream properties, drainage courses, storm drains, streets, easements, or public or private facilities or improvements unless an approved erosion and sediment control system has been implemented on the site. If the city determines that it is necessary for the city to cause erosion and sediment control measures to be installed or cleanup to be done, the permittee shall pay all of the city's direct and indirect costs including extra inspection, supervision, and reasonable overhead charges in accordance with Section 15.52.300C. of this chapter.
3. All removable protective devices shown on the erosion and sediment control plan and outlined in the SWPPP, if applicable, shall be in place at the end of each working day during the rainy season. If the permittee does not install or maintain erosion and sediment controls, the city engineer may order city crews to do the work or may issue contracts for such work and charge the cost of this work along with reasonable overhead charges to the cash deposits or other instruments implemented for this work without further notification to the owner. No additional work on the project except erosion and sediment control work shall be performed until the full amount drawn from the cash deposit, in accordance with Section 15.52.310, Grading, Erosion and Sediment Control Securities, of this chapter is restored by the permittee.
4. BMPs shall be implemented on a continual basis during construction activities. The following minimum criteria shall be met:
a. An effective combination of erosion and sediment controls shall be implemented within seven (7) working days of clearing or inactivity in construction.
b. Soil stockpiles must be stabilized with a combination of erosion and sediment controls and have a daily maintenance frequency or as directed by the city engineer.
c. Waterway and watercourse protection shall include, but not be limited to, stabilization of the channel before, during, and after any in-channel work.
d. The faces of cut and fill slopes shall be prepared and maintained to control against erosion and sediment discharge in accordance with this section.
e. Permittee shall implement BMPs year round and can vary based on wet and dry seasons. Permittee shall also implement additional site-specific BMPs, as necessary, to comply with this chapter, which may be more stringent than those required under the general construction permit.
f. Permittee shall implement additional controls for construction sites tributary to Clean Waters Act (CWA) Section 303(d), water bodies impaired for sediment. Each permittee shall implement additional controls for construction sites within or adjacent to or discharging directly to receiving waters within environmentally sensitive areas.
g. Permittee shall conduct construction site inspection for compliance with this chapter and all applicable permits.
D. Erosion and Sediment Control Maintenance.
1. Prior to and after each rainstorm, silt and debris shall be removed from check dams, desilting basins, curbs, gutters, streets, brow ditches, terrace drains, silt fences and other private and public stormwater conveyance systems shall be dewatered to prevent overfilling between storm events.
2. Prior to and after each rainstorm, the erosion and sediment control system shall be evaluated and revised and repaired as necessary.
3. The permittee shall be responsible for and shall take necessary precautions to prevent public trespass onto areas where impounded water, due to erosion and sediment control devices, creates a hazardous condition.
4. The permittee shall be responsible for continual maintenance of the devices during the construction activities. In the event of failure or refusal by the permittee to properly maintain the devices, the city engineer may cause emergency maintenance work to be done to protect adjacent private and public property. The cost shall be charged to the owner and shall include mobilization costs plus the costs of doing the work in accordance with Section 15.52.310C. of this chapter.
5. In the event the city engineer must cause emergency work to be done, he or she may revoke the grading permit. The permit shall not be renewed until approved erosion and sediment control system has been installed and the owner has paid any applicable fees.
6. If any grading or clearing subject to Section 15.52.030, Permits Required, of this chapter has commenced on private property without a valid grading permit, the property owner will be required to stop work and prepare and implement an erosion and sediment control plan which has been approved by the city. In the event of failure by the property owner to install an approved erosion and sediment control system, the city engineer may cause work to be done to protect adjacent private and public property. The cost shall be charged to the owner in accordance with Section 15.52.310C. of this chapter.
E. Erosion and Sediment Control— Agricultural.
1. Resource Conservation Plans. For all lands used for agricultural purposes within the city of Murrieta, the property owner shall cause to be prepared a resource conservation plan, utilizing the best management practices for the prevention of erosion and sedimentation. The resource conservation plan shall be prepared by the USDA Soil Conservation Services or a registered agricultural engineer consultant.
2. Implementation of Resource Conservation Plans. The resource conservation plans to be prepared for best management practices implementation is to be prioritized based upon the soil conservation service “soil erosion hazard map” with those areas of high erosion hazard receiving top priority. Resource conservation plans for agricultural areas shall be submitted for review and filing by the city after acceptance by the Regional Water Quality Control Board.
3. Annual Report. The property owner of agricultural land shall be responsible for the preparation and submittal to the city engineer an annual report setting forth their progress in the preparation of resource conservation plans and best management practices implementation. Progress reports may be required more frequently if deemed necessary by the city engineer.
(Ord. 349 § 4 (part), 2006: Ord. 346 § 4 (part), 2006: Ord. 97 § 1 (part), 1993: Ord. 3 § 1 (part), 1991: prior code §§ 8.12.100.833-- 8.12.100.835)
A. General Requirements. The permittee shall abide by all of the provisions set forth in the State Water Resources Control Board (SWRCB) NPDES general permit for construction activity, if applicable. A Waste Discharge Identification Number (WDID) issued by the SWRCB shall be provided to the city prior to any grading. All grading activities subject to the regulations of this ordinance shall be designed and conducted to minimize runoff of sediment and all other pollutants onto public properties, other private properties and into waters of the United States as required by this chapter and city Municipal Code, Title 8, Chapter 8.36, Stormwater and Urban Runoff Management and Discharge Controls, in accordance with Subarticle 6 of the Grading Manual.
B. Responsibility. It shall be the permittee's responsibility to obtain the NPDES application package, submit the Notice of Intent (N0I) and appropriate fee to the SWRCB, complete all site- specific Stormwater Pollution Prevention Plans (SWPPP), monitoring and reporting program plans, reports, certifications, and other information required by the permit and or requested by the Regional Water Quality Control Board (RWQCB), SWRCB, United States Environmental Protection Agency (USEPA), or the city engineer. The permittee shall update all plans as construction activities are modified from their original schedule and/or progress as originally planned. The permittee shall also maintain the site throughout the duration of the project as required by the permit. All of the information noted above shall be maintained on-site during construction and shall be presented upon demand by the SWRCB and/or city of Murrieta inspectors. NPDES requirements will remain in effect until Notice of Termination (NOT) requirements are fulfilled.
(Ord. 349 § 4 (part), 2006: Ord. 346 § 4 (part), 2006)
A. General. All grading operations for which a permit is required issued pursuant to the provisions of this chapter shall be subject to inspection by the city engineer or his or her representative.
B. Grading Requirements.
1. It shall be the responsibility of the civil engineer who prepared the grading plans to incorporate the applicable recommendations from the geotechnical engineering and engineering geology reports and to incorporate any city engineer-approved alternatives into the grading plan.
2. The civil engineer shall be responsible for establishing line and grade for the grading and drainage improvements and shall act as the coordinating agent in the event the need arises for liaison between the other professionals, the contractor and the city engineer.
3. The civil engineer shall be responsible for the preparation of plan revision, and upon completion of the work, the submission of as-graded drawings incorporating all changes and/or additions made during construction.
4. Prior to issuance of building permits for any given lot or lots, the civil engineer shall submit a written statement as evidence that rough grading for land development has been completed within standard tolerances in accordance with the approved plans and that all embankments and cut slopes and pad sizes are as shown on the approved plans.
5. The geotechnical engineer's area of responsibility shall include, but not be limited to, performing the preliminary geotechnical engineering investigation and preparing the preliminary geotechnical engineering report, determining the suitability of soils during grading, providing compaction inspection and testing, and preparing the final geotechnical engineering report.
6. The engineering geologist's area of responsibility shall include, but not be limited to, professional inspection and approval of the stability of cut slopes with respect to geological matters, and the need for subdrains or other groundwater drainage devices. The engineering geologist shall report the findings to the geotechnical engineer for engineering analysis.
7. The landscape architect shall incorporate applicable recommendations from the geotechnical engineering reports into the landscape and irrigation plans. The landscape architect shall also prepare plan revisions, as required by the city engineer, and shall submit as-graded drawings incorporating all changes and/or additions made during construction.
C. Notification of Noncompliance. If, in the course of fulfilling their responsibility under this grading code, the engineer of record, the geotechnical engineer, the engineering geologist, or the testing agency finds that the work is not being done in accordance with approved plans, specifications or this chapter, the discrepancies shall be reported immediately in writing to the grading contractor, the permittee and the city engineer. Recommendations for corrective measures, if necessary, shall be submitted for approval to the City Engineer.
D. Transfer of Responsibility for Approval. If the civil engineer, engineer of record, the geotechnical engineer, the engineering geologist, or the grading contractor of record are changed during the course of the work, the work shall be stopped until:
1. The permittee submits a letter of notification verifying the change of the responsible professional; and
2. The new responsible professional submits in writing that he or she has reviewed all prior reports and/or plans (specified by date and title) and work performed by the responsible professional party, and that he or she concurs with the findings, conclusions and recommendations, and is satisfied with the work performed. He or she must state that they assume all responsibility within his or her purview as of a specified date. All exceptions shall be justified to the satisfaction of the city engineer.
Exception. Where clearly indicated that the firm, not the individual engineer and/or geologist, is the contracting party, the designated engineer or geologist may be reassigned and another engineer and/or geologist within the firm may assume responsibility.
E. Site Inspection by the City Engineer.
1. Prior to the approval of any grading plans and specifications, the city engineer may inspect the site to determine that the plans and specifications are current and reflect existing conditions.
2. The permittee or his or her agent shall notify the city engineer when the grading operations are ready for inspection.
3. If the inspector finds the soil or other conditions not as stated in the approved plans and soil or geology reports or as in additional information which was required for issuance of the grading permit, he or she may, using reasonable judgement, refuse to allow further work until approval is obtained for a revised grading plan which will conform to the conditions.
4. The provisions of Section 202(d) of the Uniform Building Code shall apply to all grading work and whenever the city engineer determines that any work does not comply with the terms of a permit, or this chapter, or that the soil or other conditions are not as stated on the permit, the city engineer may order the work stopped by notice in writing to the permittee.
5. Prior to the issuance of building permits for a graded site, the grading shall be completed in accordance with Subarticle 14 of the Grading Manual and to the satisfaction of the responsible civil engineer, engineering geologist, soil engineer, and to the city engineer.
6. Whenever any work on which inspections are required is covered or concealed by additional work without first having been inspected, the city engineer may require, by written notice, that such work be exposed for examination. The work of exposing and recovering shall not entail or be subject to expense by the city.
F. Special Inspections. The city engineer may establish inspection requirements in accordance with Section 306 of the Uniform Building Code, for special cases involving grading or paving related operations. Special cases may apply to work where in the opinion of the city engineer it is necessary to supplement the resources or expertise available for inspection.
(Ord. 349 § 4 (part), 2006: Ord. 346 § 4 (part), 2006: Ord. 97 § 1 (part), 1993: Ord. 3 § 1 (part), 1991: prior code §§ 8.12.100.836--8.12.100.841)
A. Final Reports. Upon completion of the rough grading work and at final completion of the work, the city engineer may require the written approvals, reports, plans and supplements specified in Subarticle 8 of the Grading Manual.
B. Notification of Completion. The permittee or his or her agent shall notify the city engineer when the grading operation is ready for final inspection. Final approval shall not be given until all work, including installation of all drainage facilities and their protective devices, and all erosion and sediment control measures, including landscaping and its irrigation system, have been completed in accordance with the approved grading plan, and the required reports have been submitted. Where landscape planting for erosion and sediment control has been installed, final clearance, i.e., release of security deposits, shall not be granted until the plantings have become established. The establishment of such erosion and sediment control plantings shall be certified by a licensed landscape architect and approved by the city engineer.
(Ord. 349 § 4 (part), 2006: Ord. 346 § 4 (part), 2006: Ord. 97 § 1 (part), 1993: Ord. 3 § 1 (part), 1991: prior code §§ 8.12.100.842--8.12.100.843)