Attachment_5_BMPs_Section_J_11_17_15.docx

Silver Lake Parking Resurfacing Best Management Practices (BMPs)

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.

BMP 2.3 - Road Construction and Reconstruction

1. Maintain erosion-control measures to function effectively throughout the project area during road construction and reconstruction, and in accordance with the approved erosion control plan (see BMP 2.13- Erosion Control Plan).

2. Set the minimum construction limits needed for the project and confine disturbance to that area.

3. Locate and designate waste areas before operations begin, submit for COR approval.

a. Deposit and stabilize excess and unsuitable materials only in designated sites.

b. Do not place such materials on slopes within 100 feet of a stream channel (if possible, if they must be placed closer, consult with COR to site the waste areas)

4. Do not permit sidecasting within 50 feet of a stream channel. Prevent excavated materials from entering water ways or within 50 feet of a stream channel.

5. Schedule operations when rain, runoff, wet soils, snowmelt or frost melt are less likely.

a. Optimally, schedule construction during dry periods, while still adhering to other seasonal restrictions (wildlife breeding, spawning, fire activity levels, and so forth), consistent with local ordinances.

b. Stabilize project area during normal operating season when the National Weather Service predicts a 30 percent or greater chance of precipitation, such as localized thunderstorm or approaching frontal system.

c. Keep erosion-control measures sufficiently effective during ground disturbance to allow rapid closure when weather conditions deteriorate.

d. Complete all necessary stabilization measures prior to predicted precipitation that could result in surface runoff.

6. Limit operation of equipment when ground conditions could result in excessive rutting, soil compaction (except on the road prism or other surface to be compacted), or runoff of sediments directly to streams.

7. Construct fills and keyways according to design drawings and specifications, not exceeding specified lift thickness and moisture content. Ensure uncompacted materials are prevented from leaving disturbance limits.

8. Stabilize all disturbed areas with mulch, erosion fabric, vegetation, rock, large organic materials, engineered structures, or other stabilization measures according to the Erosion Control Plan, and project specifications and drawings for permanent controls (that is, crib walls, gabions, riprap placement, and so forth).

9. Do not open up more ground than can be substantially completed before expected winter shutdowns, unless erosion-control measures are implemented.

10. Install erosion-control measures on bare soil areas prior to precipitation events or the start of the winter period (November 16 through March 31) and in accordance with the approved erosion control plan:

b. Install temporary culverts, side drains, cross drains, diversion ditches, energy dissipaters, dips, sediment basins, berms, dikes, debris racks, pipe risers, or other facilities needed to control erosion.

c. Remove debris, obstructions, and spoil material from channels, floodplains, and riparian areas.

d. Plant vegetation, mulch, and amendments, or provide other protective cover for exposed soil surfaces as required.

BMP 2.5 - Water Source Development and Utilization

1. Water sources designed for permanent installation, such as piped diversions to off-site storage, are preferred over temporary, short-term-use developments.

2. If off-site storage is not an option then the contractor should consult the COR for optimum locations.

3. Develop and implement Erosion Control Plan for water supply site construction and use.

4. Excavation of streambed or bank materials for approaches, drafting pads, and water drafting intakes are subject to local or regional restrictions on ground-disturbing activities.

a. Excavations should not occur during peak runoff season.

b. Federally listed threatened and endangered species, sensitive (including State-listed) species, management Indicator species, and aquatic organisms of interest may impose further restrictions.

c. Other restrictions such as spawning season may be applicable

5. Basins shall not be constructed at culvert inlets for the purpose of developing a waterhole, as these can exacerbate plugging of the culvert.

6. Access approaches are located as close to perpendicular as possible to prevent stream bank excavation.

7. Access approaches are stabilized with appropriate materials, depending on expected life and use frequency of the developed water source.

8. Fish-bearing streams that are temporarily dammed to create a drafting pool shall provide fish passage for all life stages of fish.

9. Temporary dams shall be removed when operations are complete.

10. Removal shall be done gradually so that released impoundments do not discharge sediment into the streamflow.

11. When diverting water from streams, bypass flows shall be maintained that ensure continuous surface flow in downstream reaches, and keep habitat in downstream reaches in good condition.

Drafting Operations:

a. For fish-bearing streams, the water drafting rate should not exceed 350 gallons per minute for streamflow greater than or equal to 4.0 cubic feet per second (cfs).

b. Below 4.0 cfs, drafting rates should not exceed 20 percent of surface flows.

c. Water drafting should cease when bypass surface flows drop below 1.5 cfs.

d. For non-fish-bearing streams, the water drafting rate should not exceed 350 gallons per minute for stream flow greater than or equal to 2.0 cfs.

e. Drafting rate should not exceed 50 percent of surface flow for non-fish-bearing streams.

f. Water drafting should cease from non-fish-bearing streams when bypass surface flow drops below 10 gallons per minute.

g. Intakes, for trucks and tanks, shall be placed parallel to the flow of water and screened, with opening size consistent with the protection of aquatic species of interest.

12. Drafting from gravity-fed storage tanks shall utilize the following:

a. Water storage tanks shall be fitted with properly sized pipes designed to cleanly return the tank overflow to the source stream.

b. Outflow pipes shall be sized to fully contain the tank overflow and prevent it from overflowing onto the drafting pad or road surface.

c. Water storage tank return pipes at the water outfall area shall be armored to prevent erosion of the streambed, bank, or channel.

d. At the end of drafting operations, intake screens shall be removed and drafting pipes plugged, capped, or otherwise blocked or removed from the active channel to terminate water drafting during the winter season.

13. Trucks directly drafting from the channel shall utilize the following practices:

a. Water drafting by more than one truck shall not occur simultaneously

Approaches and Drafting Pads:

1. Road approaches and drafting pads shall be treated to prevent sediment production and delivery to a watercourse or waterhole, if necessary.

2. Road approaches shall be armored as necessary from the end of the approach nearest a stream for a minimum of 50 feet, or to the nearest drainage structure (for example, waterbar or rolling dip) or point where road drainage does not drain toward the stream.

3. Where overflow runoff from water trucks or storage tanks may enter the stream, effective erosion control devices shall be installed (for example, gravel berms or waterbars).

4. All water-drafting vehicles shall be checked daily and shall be repaired as necessary to prevent leaks of petroleum products from entering water or areas within 100 ft. of streams.

5. Water-drafting vehicles shall contain petroleum-absorbent pads, which are placed under vehicles before drafting.

6. Water-drafting vehicles shall contain petroleum spill kits. Dispose of absorbent pads according to the Hazardous Response 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 plans to COR for approval.

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

b. For staging areas, designate 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 to 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 copy of spill response plan to 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 from in the project area, work with COR to plan storage methods and locations.

11. Remove service residues, waste oil, and other materials from NFS 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 NFS lands 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. (for example, California Stormwater Quality Association BMP standard specifications CASQA at http://www.cabmphandbooks.com, or Caltrans Stormwater and Water Pollution Control guides at http://www.dot.ca.gov/hq/construc/stormwater/stormwater1.htm)

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 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. Control practices to reduce wind erosion and control dust.

g. 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.

h. Contact 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 eliminate 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 servicing, 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, the date of initial preparation, and the person and date responsible for any amendments to the erosion control plan.