8. Silver Lake Boat Launch - BMPs.pdf

Silver Lake BLF Rehabilitation Project - BMPs

Best Management Practices (BMPs) Plan

These BMPs are adapted from Forest Service Handbook R5 FSH 2509.22 – Soil and Water Conservation

Handbook, Chapter 10 – Water Quality Management Handbook. They have been adapted to be specific to this project. Only those requirements relevant to this project have been included. The Contractor is required to incorporate these Forest Service BMPs in the Construction General Permit Storm water

Pollution Prevention Plan.

BMP 2.10 - Parking and Staging Areas

If possible, stage and park only in existing disturbed areas. If not possible:

1. Design and locate parking and staging areas of appropriate size and configuration to accommodate expected vehicles and prevent damage to adjacent water; aquatic, and riparian resources. Submit staging area plan to COR for approval.

a. Avoid sensitive areas such as riparian areas, wetlands, meadows, bogs, fens, inner gorges, overlay steep slopes, and unstable landforms to the extent practicable.

b. For staging areas, designated specific locations for fueling so that water-quality impacts are minimized.

2. Consider the number and type of vehicles to determine parking or staging area size.

3. Provide signage to designate parking, staging, and refueling areas, and minimize impacts to sensitive areas.

4. Conduct maintenance activities commensurate with parking or staging area surfacing and drainage requirements as well as precipitation timing, intensity, and duration.

5. Limit the size and extent of temporary parking or staging areas.

6. Take advantage of existing openings, sites away from waterbodies, and areas that are apt to be more easily restored.

7. Rehabilitate temporary parking or staging areas immediately following use.

8. Effectively prevent access to the area once construction activities have been completed.

BMP 2.11 - Equipment Refueling and Servicing

1. Plan for appropriate equipment refueling and servicing sites during project planning.

2. Allow temporary refueling and servicing only at approved locations, which are well away from water or riparian resources. If you need to fuel on-site, work with the COR to designate the location.

3. Develop or use existing fuel and chemical management plans (for example, Spill Prevention

Control and Countermeasures (SPCC), spill response plan, emergency response plan). Provide a copy of the spill response plan to the COR.

4. Clean up and dispose of spilled materials according to specified requirements in the appropriate guiding document.

5. Locate, design, construct, and maintain petroleum and chemical delivery and storage facilities consistent with local, State and Federal regulations.

6. Install contour berms and trenches around vehicle service and refueling areas, chemical storage and use areas, and waste dumps to fully contain spills.

7. Use liners as needed to prevent seepage to groundwater.

8. Provide training for all personnel handling fuels and chemicals in their proper use, handling, storage, and disposal.

9. Avoid spilling fuels, lubricants, cleaners, and other chemicals during handling and transporting.

10. If storing chemicals or wastes in the project areas, work with the COR to plan storage methods and locations.

11. Remove service residues, waste oil, and other materials from National Forest Service land and properly dispose them following completion of the project

12. Report spills to COR as soon as possible.

13. Remove contaminated soil and other material from National Forest Service land and dispose of this material in a manner according to controlling regulations.

14. Section H clauses for Public Works Construction include a standard clause for Spill Plan when project or activity includes oil or oil products storage exceeding 1,320 gallons, or a single container exceeding 660 gallons. Section H clauses also require designation of contractor’s key personnel, including authorized on-site representative and phone number(s).

BMP 2.13 - Erosion Control Plan

The contractor shall create an erosion control plan for construction activities

1. Erosion and Sediment Control shall include:

a. List of anticipated ground-disturbing actions associated with the project (for example, stream diversion; exposed cut slopes; stripped and stockpiled topsoil; water source development or use)

b. Illustrations of control practices designed to prevent erosion and sedimentation.

Illustrations must show construction and installation details for control practices, and must be included in the erosion control plan.

c. A storm preparedness plan that describes additional control practices to be implemented when the National Weather Service predicts a 50 percent or greater chance of precipitation.

d. A winterization plan that describes additional control practices to be implemented to stabilize the site during periods of seasonal inactivity, if the project will be implemented over more than one year. “Winterized” means that the site is stabilized to prevent soil movement permanently if project activities are complete, or temporarily in a manner which will remain effective until the end of the stabilization period.

e. Control practices to reduce the tracking of sediment onto paved roads. These roads will be inspected and cleaned as necessary.

f. A proposed sequential schedule to implement erosion and sediment control measures, in addition to the general construction schedule, location of staging area and spoil piles.

g. Contract information of project personnel, including name and cell phone number (that is, Sale Administrator, Contracting Officer’s Representative, Project Manager, Project

Supervisor, Contractor, Site Superintendent, Hydrologist, Permit Administrator and so forth)

2. Non-Storm Water Management: The erosion control plan shall include provisions which eliminated or reduce the discharge of materials other than storm water to the storm sewer system and/or receiving waters. Such provisions shall ensure that discharged materials shall not have an adverse effect on receiving waters. Materials other than storm water that are discharged shall be listed, along with the estimated quantity of the discharged material.

3. Waste Management and Disposal: the erosion control plan shall describe waste management and disposal practices to be used at the project site. All wastes (including equipment and maintenance waste) removed from the site for disposal shall be disposed of in a manner that is in compliance with Federal, State, and local laws, regulations, and ordinances. Include plan for project-specific activities that produce waste products, such as concrete truck/chute/pump washout, equipment washing, and so forth.

4. Maintenance, Inspection, and Repair: The erosion control plan shall include inspection, maintenance and repair procedures to ensure that all pollution-control devices identified in the erosion control plan are maintained in good and effective condition and are promptly repaired or restored. A Forest Service Engineer or Watershed Specialist shall be assigned the responsibility to conduct inspections, with daily inspections made and documented by the Contractor. A tracking and follow-up procedure shall be described to ensure that all inspections are done by trained personnel and that adequate response and corrective actions have been taken in response to the inspection. This procedure may be in the form of a written checklist, with inspections signed and dated. Photo documentation is encouraged.

5. Post-Project Storm Water Management: The erosion control plan shall describe the storm water control structures and management practices that will be implemented to minimize pollutants in storm water discharges after project activity phases have been completed at the site. It shall also specify controls to be removed from the activity site(s) and methods for their removal. The discharger must consider site-specific factors and seasonal conditions when designing the control practices that will function after the project is complete.

6. The erosion control plan shall include the title and signature of the person responsible for preparation of the erosion control plan, that date of initial preparation, and the person and date responsible for any amendments to the erosion control plan.

Project Specific Construction BMPs

The following measures have been incorporated into the project to minimize adverse effects on the aquatic environment.

1. A designated concrete washout area will be located at least 100 feet from any high water mark within adjacent waterways, and from any wetlands and will be developed and used following the

U.S EPA Storm water BMP for Concrete Washout.

2. BMPs will be developed and implemented to ensure that wet concrete does not enter Silver Lake or other aquatic sites during construction.

3. Construction equipment and materials shall be stored at least 50 feet from the Ordinary High

Water Mark of Silver Lake, any wetlands or other aquatic sites.

4. All construction debris (concrete, metal, etc.) from the construction activities shall be removed from the construction activities shall be removed from the site post-construction.

5. Construction of all project actions shall comply with Regional Water Quality Control Board

(RWQCB) Basin Plan Objectives. Standard BMPs will be incorporated into the project designs and/ or the SWPPP, if required.

6. Disturbance to existing vegetation will be avoided or minimized to the extent possible.

7. Disturbance to riparian vegetation will be avoided or minimized to the extent possible.

8. All heavy equipment shall bet thoroughly cleaned prior to mobilization onsite to remove any soil, weed seeds and plant parts in order to reduce the importation and spread of invasive exotic plant species.

9. Only native litter/ needles from the site or certified weed-free straw shall be used for erosion control or other purposes to reduce the importation and spread of invasive exotic plant species.

10. Grading and paving activities shall be conducted in such a manner that disturbances are confined to already developed areas, to the extent possible.

11. Monitoring of water turbidity and settleable materials shall be conducted in accordance with the

Clean Water Act Section 401 Certification through consultation with RWQCB.

12. All equipment and machinery that contains fuel, oil or other petroleum products used during construction-related activities shall be checked for petroleum leaks immediately prior to being mobilized to the project site, and again each day prior to use.

13. All equipment refueling and/ or maintenance shall take place a minimum of 100 feet away from

Silver Lake, any wetland or other aquatic sites.

14. An emergency spill kit and absorbent oil booms will be onsite during construction activities.

15. The Contractor shall prepare a Water Pollution Control Plan (WPCP) for approval to include both temporary and post-construction erosion control.

16. The Contractor shall submit a plan for approval for turbidity and sediment control indicating the location, depth and material type for turbidity curtains. The plan shall also contain curtain maintenance contingencies in the extent of curtain failure or damage from construction activities.

17. Project activities will avoid impacts to wetlands and other aquatic habitats to the extent possible.

18. High-visibility fencing will be installed in areas where equipment will be working near any wetlands or other aquatic habitats that are not to be disturbed.

19. Construction crews will be informed about the importance of avoiding sensitive areas, including wetlands.

20. A Clean Water Act Section 404 Permit will be obtained from the U.S Army Corps of Engineers and a Clean Water Act Section 401 Certifications will be obtained from RWQCB.

21. To prevent the spread of potential invasive aquatic species, any visible mud, plants or animals will be removed before transporting equipment into and out of water (Silver Lake).

22. Any opportunity to facilitate outreach and education about preventing invasive species, how to

“keep wildlife wild” and the principles of “leave no trace” are encouraged, consider the following links: https://www.wildlife.ca.gov/keep-me-wild and https://Int.org/learn/seven-principles-overview

23. Facilities with open vent pipes like restrooms will be covered to prevent access from birds, bats and other vulnerable species.

24. If feasible, all tree and shrub removal and pruning activities will be conducted during non-breeding season (generally September 1 through January 31). If pruning and removal activities must be scheduled during the breeding and nesting season (February 1 through August 31), pre-construction surveys shall be performed prior to the start of project activities.

a. Surveys shall be conducted by an Inyo National Forest wildlife biologist.

b. Surveys shall be conducted no less than 14 days and no more than 30 days prior to the beginning of each phase of construction.

c. Activities may be delayed based on the outcome of nesting surveys.

Summary of Erosion and Sediment Control and Storm water Treatment Measures.

Summary of Source Control Measures

Post-Construction BMPs

All construction debris (concrete, metal, etc.) from the construction activities shall be removed from the site post-construction.

Only native litter/ needles from the site or certified weed-free straw shall be used for erosion control or other purposes to reduce the importation and spread of invasive exotic plant species.

https://www.wildlife.ca.gov/keep-me-wild https://int.org/learn/seven-principles-overview https://int.org/learn/seven-principles-overview