BMP Handbook_021210.pdf

5190 Neil Road Reno, NV 89502

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Golden Gate National Recreation Area

Storm Water Management Plan Appendix C – BMP Handbook

February 2010

Prepared for

Golden Gate National Recreation Area Environmental Programs Office

K/J Project No. 0795011

Golden Gate National Recreation Area – Appendix C – BMP Handbook

Section 1: Executive Summary

In 2006 Golden Gate National Recreation Area (GGNRA) developed a Storm Water Management Plan (SWMP) which provides a comprehensive program to reduce pollution in storm water runoff in GGNRA. The program was designed to comply with the Clean Water Act and meet federal and state National Pollutant Discharge Elimination System (NPDES) storm water regulations for small municipal separate storm sewer systems (MS4s). Although National Park Service (NPS) facilities at GGNRA have not been formally identified as being subject to the Phase II General Permit, GGNRA chose to develop a SWMP in order to protect surface water quality within the park.

Areas such as GGNRA with high volumes of transient tourist populations present unique challenges to protecting water quality from the impacts of human activity. Everyday human activities contribute many types of pollutants into creeks and streams through storm water runoff. Some of these pollutants may be oils and hydrocarbons from automobiles, trash, chemicals from landscape applications, and sediment resulting from land disturbances such as construction.

As the final Appendix of the SWMP, GGNRA developed this Construction Site BMP Handbook to address construction site activities and disturbances. GGNRA is currently utilizing the 1993 California Stormwater Quality Association (CASQA) Construction Site Handbook Best Management Practices (BMPs) for construction site development. This handbook was updated in 2003; however, since the 2002 boilerplate GGNRA Stormwater Pollution Prevention Plan (SWPPP) utilized the 1993 CASQA BMPs, the park needed to update the SWPPP to include the 2003 boilerplate CASQA BMPs.

This left the Park looking to customize the CASQA BMP Handbooks to meet both National Park Service (NPS) and local GGNRA requirements. While investigating the differences in missions between GGNRA and CASQA, GGNRA felt that it would be beneficial to introduce park-wide BMPs from two additional sources. The six published sources that make up the GGNRA Construction Site BMP Handbook are as follows:

• CASQA Construction BMP Handbook, 2003

• CASQA Municipal BMP Handbook, 2003

• CASQA Industrial and Commercial BMP Handbook, 2003

• CASQA New Development and Redevelopment BMP Handbook, 2003

• FishNet 4c Guidelines 2004 Appendix A - BMP Toolbox

• San Mateo County 2004 County of San Mateo Watershed Protection Program Volume 1

Maintenance Standards

This GGNRA Construction Site BMP Handbook includes BMPs taken directly from the above sources that have either been accepted “as is”, or modified to include “park-specific” information and regulations. This 2008 GGNRA Construction Site BMP Handbook will replace the previously utilized BMP sheets provided as an appendix in the boilerplate GGNRA SWPPP.

1.1 List of Acronyms

BAT Best Available Technology Economically Achievable

BCT Best Conventional Pollutant Control Technology

BMP Best Management Practices

BOD Biochemical Oxygen Demand

Cal/EPA California Environmental Protection Agency

Caltrans State of California Department of Transportation

CASQA California Stormwater Quality Association

DI Drop inlet (storm drain catch basin)

EPA U.S. Environmental Protection Agency

GGNRA Golden Gate National Recreation Area

GOGA Golden Gate

LID Low Impact Development

MS4 Municipal Separate Storm Sewer System

MSDS Material Safety Data Sheet

NOI Notice of Intent

NOT Notice of Termination

NOV Notice of Violation

NPDES National Pollutant Discharge Elimination System

NPS

NRC

National Park Service

National Response Center

NRCS Natural Resource Conservation Service

RSWQMP Regional Storm Water Quality Management Program

SPCC

SWPPP

Spill Prevention Control and Countermeasure Plan

Storm Water Pollution Prevention Plan

VOC Volatile Organic Compound

Section 2: NPDES Permit Regulations

In 1987, Congress amended the Federal Water Pollution Control Act (also known as the Clean Water Act) in order to protect receiving water bodies from the impacts of urban runoff. The amendments established a framework for regulating municipal and industrial discharges under the National Pollutant Discharge Elimination System (NPDES). Sources of storm water runoff that had the greatest potential to negatively impact water quality nationwide were addressed by Phase I of the NPDES Stormwater program. Construction sites are considered one of the eleven regulated industrial activities. Under Phase I, the U.S. Environmental Protection Agency (EPA) required NPDES permit coverage for storm water discharges from medium and large municipal separate storm sewer systems (MS4s) located in incorporated places or counties with populations of 100,000 or more. In March 2003, Phase II of the NPDES Stormwater program became effective. In addition to requiring permit coverage for storm water discharges from certain regulated small MS4s, Phase II lowered the threshold for construction activities regulation from 5 acres to 1 acre of land disturbance.

Implementation of National Pollutant Discharge Elimination System (NPDES) Storm Water Permit regulations is mandated under both federal and state regulations (the U.S. EPA, the SWRCB, and the RWQCB). In 1987, Congress amended the Federal Water Pollution Control Act (also known as the Clean Water Act) in order to protect receiving water bodies from the impacts of urban runoff. The amendments established a framework for regulating municipal and industrial storm water discharges under the NPDES. According to the Clean Water Act mandate, municipalities regulated under the NPDES must reduce pollutant loadings in municipal separate storm sewer systems (MS4s) to the “maximum extent practicable” (MEP) and must effectively prohibit non-storm water discharges through their MS4s as a first step toward achieving pollutant loading reductions consistent with applicable water quality standards (U.S.

EPA, 1997). Widespread implementation of storm water best management practices (BMPs) is required to meet the MEP standard.

The Central Coast RWQCB is the lead state agency responsible for protecting water quality in the Central Coast Region of California. The RWQCB has the authority to enforce regulatory policies and statutes under the Clean Water Act, the California Porter-Cologne Water Quality Control Act and the Central Coast Regional Water Quality Control Plan.

The California State Water Resources Control Board (SWRCB) and Regional Water Quality Control Boards have not specifically identified National Park Service (NPS) facilities as being regulated under the Phase II General Permit for the discharge of Storm Water from small MS4s (WQ Order 2003-0005-DWQ). Although NPS facilities, including GGNRA, have not been formally identified as being subject to the Phase II General Permit, the park is choosing to develop a Storm Water Management Plan (SWMP) in order to protect surface water quality within the park.

Section 3: The General Permit

Dischargers, those parties whose activities or projects disturb one or more acres of soil or whose projects disturb less than one acre but are part of a larger common plan of development that in total disturbs one or more acres, are required to obtain coverage under the General Permit for Discharges of Storm Water Associated with Construction Activity (Construction General Permit, 99-08-DWQ). Construction activity subject to this permit includes clearing, grading and disturbances to the ground such as stockpiling, or excavation, but does not include regular maintenance activities performed to restore the original line, grade, or capacity of the facility.

Erosion and sediment transport are natural processes that form landscapes and provide the bedloads required to maintain stable streams and rivers. Sediment and gravel transported from undeveloped land surfaces also provides important fish spawning media and is critical to support other aquatic, riparian and terrestrial habitats. Disturbances within watersheds from activities such as construction, mining and overgrazing can greatly accelerate the process of erosion and sediment transport, resulting in excessive deposition of sediments in streams and rivers, and other negative environmental impacts.

GGNRA is subject to the General Construction Permit and therefore requires contractors to file an Notice of Intent (NOI) for any work that will disturb over an acre of land.

Degradation of Aquatic and Riparian Ecosystems: Excessive sediment loads from runoff can cause increased turbidity and reduced light penetration resulting in reduction in prey capture for sight feeding predators, clogging of gills and filters of fish and aquatic invertebrates, reduced spawning and juvenile fish survival, reduced angling success, smothering of bottom dwelling communities, changes in substrate composition, and reduction in aesthetic values (Schueler, 1987). Sediments from runoff can also lead to suppression of both aquatic and terrestrial vegetation and may add nutrient particles and other pollutants to lakes and streams. In addition, increased sediment loading can result in changes to the physical characteristics of streams and rivers. Changes may include streambed degradation, stream widening, and streambank erosion (Urban Drainage and Flood Control District, 1999).

Pollution Transport: Sediment is a pollutant in its own right and can transport many substances (such as nutrients, hydrocarbons, and trace metals) and lead to water pollution problems (APWA, 1981). Soil organic components, plant residues, nutrient elements, organic material, atmospheric pollutants, and liquid and solid wastes are pollutants that originate from topsoil losses. Construction activities remobilize pollutants in sediment and often add additional pollutants that adhere to the soil particles. Table 1-1 provides a list of the typical pollutants associated with construction site activities.

Erosion and Sedimentation of Waterways and Public Facilities

: Construction activities generally increase the amount of loose sediment in the construction site area. If this loose sediment is not properly managed, it may move through its courses much more rapidly than normal. This can lead to channel widening and/or deepening, which will persist until the channel re-establishes equilibrium. Erosion of water courses may impact natural and cultural resources, and potentially result in property damage. Sedimentation also contributes to accelerated filling of reservoirs and drainage systems, resulting in additional maintenance requirements and increased expenditure of private and public funds.

http://www.waterboards.ca.gov/stormwtr/gen_const.html#const_permit� http://www.waterboards.ca.gov/stormwtr/gen_const.html#const_permit�

References: USEPA, 1973; Meech and Bazany, 1991; Gosselin, et. al., 1984.

3.1 Best Management Practices (BMPs)

A Best Management Practice (BMP) can be defined as any program, technology, process, siting criteria, operating method, measure, or device that controls, prevents, removes, or reduces water pollution (IECA, 2002). Construction site BMPs are generally implemented to reduce or prevent erosion and to control the sediment and wastes that are generated from construction activities and transported in stormwater.

Table 1-1: Typical Construction Site Pollutants

CATEGORY PRODUCT/ ACTIVITY POLLUTANTS

Adhesives Adhesives, Glues, Resins, Epoxy Synthetics Phenolics, Formaldehydes Caulks, Sealers, Putty, Sealing Agents Asbestos, Phenolics, Formaldehydes Coal Tars (Naptha, Pitch) Benzene, Phenols, Naphthalene Cleaners Polishes (Metal, Ceramic, Tile), Etching Agents Metals Cleaners, Ammonia, Lye, Caustic Sodas, and Bleaching Agents Acidity/Alkalinity Chromate Salts Chromium Plumbing Solder (Lead, Tin), Flux (Zinc Chloride) Lead, Copper, Zinc, Tin Pipe Fitting (Cut Shavings) Copper Galvanized Metals (Nails, Fences) Zinc Electric Wiring Copper, Lead Painting Paint Thinner, Acetone, MEK, Stripper Volatile Organic Chemical (VOCs) Paints, Lacquers, Varnish, Enamels Metals, Phenolics, Mineral Spirits Turpentine, Gum Spirit, Solvents VOCs Sanding, Stripping Metals Pigments, Dyes Metals Woods Sawdust Biological Oxygen Demand (BOD) Particle Board Dusts Formaldehyde Treated Woods Copper, Creosote Masonry & Concrete Dusts (Brick, Cement) Acidity, Sediments Colored Chalks (Pigments) Metals Concrete Curing Compounds Alkalinity Glazing Compounds Asbestos Cleaning Surfaces Acidity Floors & Walls Flashing Copper, Aluminum Drywall Sediments Tile Cutting (Ceramic Dusts) Minerals Adhesives Phenolics, Formaldehydes Remodeling & Demolition Insulation Asbestos Venting Systems Aluminum, Zinc Brick, Cement, Saw Cutting, Drywall Sediments Air Conditioning & Heating Insulation Asbestos Coolant Reservoirs Freon Adhesives Phenolics, Formaldehydes Yard O&M Vehicle and Machinery Maintenance Oils and Grease, Coolants Gasoline, Oils, Additives Benzene & Derivatives, Oils & Grease Marking Paints (Sprays) Vinyl Chloride, Metals Grading, Earth Moving Sediments Portable Toilets BOD, Disinfectants, pathogens Fire Hazard Control (Herbicides) Sodium Arsenite, Dinitro Compounds Pest Control Rodenticides, Insecticides Wash Waters Herbicides, Concrete, Oils, Greases Landscaping & Earthmoving Planting, Plant Maintenance Pesticides, Herbicides, Nutrients Excavation, Tiling Erosion (Sediments) Masonry & Concrete Alkalinity Solid Wastes (Trees, Shrubs, Green Waste, Mulch) BOD Exposing Mineral Deposits Acidity/Alkalinity, Metals Soils Additives Aluminum Sulfate, Sulfur Fertilizers Nutrients Materials & Waste Storage Waste Storage Used Oils, Solvents, Solid Waste Hazardous Waste Containment See above categories Raw Material Piles See above categories

3.2 Principles of Erosion and Sediment Control

Erosion control practices focus on protecting soil surfaces and preventing the particles from being detached by wind or rain, whereas sediment control practices trap the soil particles after they have been dislodged and moved by wind or water (CA RWQCB, 1999). Erosion controls are generally considered more efficient and cost effective than sediment controls because they keep soils in place and don’t require costly sediment removal maintenance procedures. The combined use of these two best management practices is often required at construction sites to reduce and eliminate pollution in storm water discharges.

Natural drainage (preservation of vegetation and grade) is the most effective means of filtering sediment and pollution and regulating the volume of runoff from land surfaces adjacent to streams (CA RWQCB, 1999). When it is not possible to maintain a natural state, sediment runoff from disturbed surfaces can be reduced significantly through the use of soil stabilization practices, sediment barriers and controls, and the stabilization of vehicle access roads. Some of these practices are temporary and only remain in effect during construction. Others are permanent and remain after construction is completed or until the site is stabilized or re-vegetated. Figure 1-1 provides a comparison of sediment concentrations in storm water runoff discharged from sites with various levels of controls in place.

Limiting the amount of disturbed soil area is also a critical component of an effective storm water management program. Some agencies place limitations on the amount of total disturbed soil area each project can expose until either temporary or permanent erosion control measures are in place. Limitations on the amount of continuous disturbed soil area is also important, particularly on exposed slopes. Slope length and inclination are considered the most important criteria for soil stabilization and sediment controls, because these two factors have the largest potential impact on erosion rates. Slope lengths can be limited by installing measures that effectively break up the slope length, reduce runoff velocities and trap sediments. Linear sediment barriers such as fiber rolls can be implemented for this purpose.

Different soil types and soil surface conditions also influence erosion potentials. Table 1-2 presents the erodiblity classification of several different basic soil types. Soil erodibility is the propensity for soil particles to become detached by the erosive actions of water and wind. It is also a function of soil texture, organic matter content, soil structure and permeability.

Figure 1-1. Effects of erosion and sediment control measures on suspended sediment concentrations from construction sites (Schueler and Lugbill, 1990).

4,145

50 25

1,000

2,000

3,000

4,000

5,000

No BMPs Erosion BMPs only

Erosion & Sediment BMPs

Post Construction

Undeveloped

M ea n Se di m en t C on ce nt ra tio ns in

St or m W at er

(m g/ l)

Table 1-2: GOGA Main Soil Types

Unit Name Description Drainage Erodibility Classification

Cronkhite-Barnabe Complex Gravelly Clay Loam Good Moderate

Tamalpais-Barnabe Complex Very Gravelly Loam Good Moderate - Low

Rodeo Clay Loam Clay Loam Poor Moderate - High

Sirdak Complex Sand Excessive High

Typic Argiustolls Sandy Clay Loam Moderate High Reference: NRCS Web Soil Survey, and Fifield (2002).

Table 1-3 presents a comparison of soil surface conditions at construction sites and the impact on increasing or reducing erosion potentials. Land management practices or techniques that roughen soil surfaces and disrupt sheet flow effectively act to reduce the velocity of runoff waters, reduce erosion potentials, enhance infiltration and promote the establishment of vegetation. Shielding soil surfaces with covers, such as mulches, enhances soil roughening effectiveness, protects disturbed soils and helps to preserve soil moisture, further enhancing the revegetation success. Best management practices that can be effectively used to reduce erosion at construction sites are presented in this document.

Table 1-3: Soil Surface Conditions at Construction Sites

Soil-Surface Condition Impact on Erosion

Compacted and Smooth Track walked along contours Track walked up and down slope Sparse crimped straw Loose to 12-inches in depth

+30% +20% -10% -10% -20%

Reference: Goldman et al., 1986.

Section 4: References

APWA, 1981. Urban Stormwater Management, Special Report No. 49, American Public Works Association Research Foundation.

California Regional Water Quality Control Board, 1999. Erosion and Sediment Control Field Manual, San Francisco Bay Area Region, 3rd

California Stormwater Quality Association, 2003. CASQA Construction BMP Handbook, 2003.

Edition, July 1999.

California Stormwater Quality Association, 2003. CASQA Municipal BMP Handbook, 2003.

California Stormwater Quality Association, 2003. CASQA Industrial and Commercial BMP Handbook, 2003.

California Stormwater Quality Association, 2003. CASQA New Development and Redevelopment BMP Handbook, 2003.

Caltrans, 2000. Construction Site Best Management Practices (BMPs) Manual. State of California, Department of Transportation, November 2000.

Fifield, J. S., 2002. Field Manual on Sediment and Erosion Control Best Management Practices for Contractors and Inspectors, ForesterPress, Santa Barbara, CA.

FishNet 2004. FishNet 4c guidelines 2004 Appendix A – BMP Toolbox.

Goldman, S., K. Jackson, and T. Bursztynsky, 1986. Erosion and Sediment Control Handbook.

McGraw-Hill Book Company, New York, NY.

Gosselin, R., R. Smith, and H. Hodge, 1984. Clinical Toxicology of Commercial Products, Fifth Ed. Williams and Wilkins, Baltimore/London.

International Erosion Control Association (IECA), 2002. Workbook: How to Select, Install and Inspect Construction Site Erosion and Sediment Control BMPs for NPDES Storm Water Permit Compliance.

Meech, M. and M. Bazany, 1991. Construction Creates Own Set of Hazardous Wastes.

Hazmat World. August, 1991.

San Mateo County, 2004. County of San Mateo Watershed Protection Program Volume 1 Maintenance Standards, 2004.

Schueler, T. and J. Lugbill. 1990. Performance of Current Sediment Control Measures at Maryland Construction Sites. Occoquan Watershed Monitoring Lab and Metropolitan Washington Council of Governments. Washington, DC. 90 pp.

Schueler, T., 1987. Controlling Urban Runoff, A Practical Manual for Planning and Designing Urban BMPs, July 1987.

U.S. Environmental Protection Agency, 1973. Processes, Procedures, and Methods to Control Pollution Resulting From Construction Activity. Office of Air and Water Programs, EPA 43079-73-007. October, 1973.

Urban Drainage and Flood Control District, 1999. Urban Storm Drainage – Criteria Manual, Vol.

3 – Best Management Practices, Denver, Colorado, September 1999.

Section 5: BMP Fact Sheets

The following are the GOGA selected Best Management Practice (BMP) Fact Sheets, which were chosen specifically to assist Contractors and Project Managers in the Park to assist in maintaining compliance with the Storm Water Management Plan and the General Permit.

GOGA has modified several of these fact sheets (See redlines or text boxes) to reflect Park-specific guidelines.

Appendix C - BMP Handbook

EXCERPTS FROM THE FOLLOWING CALIFORNIA STORMWATER QUALITY

ASSOCIATION (CASQA) HANDBOOKS

CASQA Construction BMP Handbook

CASQA Municipal BMP Handbook

CASQA Industrial and Commercial BMP Handbook

CASQA new Development and Redevelopment BMP Handbook

EC1 Scheduling

EC2 Preservation of Existing Vegetation

EC4 Hydroseeding

EC6 Straw Mulch

EC7 Geotextiles and Mats

EC9 Earth Dikes and Drainage Swales

EC10 Velocity Dissipation Devices

EC11 Slope Drains

NS1 Water Conservation Practices

NS2 Dewatering Operations

NS3 Paving and Grinding Operations

NS4 Temporary Stream Crossing

NS5 Clear Water Diversion

NS6 Illicit Connection Discharge

NS7 Potable Water – Irrigation

NS8 Vehicle and Equipment Cleaning

NS9 Vehicle and Equipment Fueling

NS10 Vehicle and Equipment Maintenance

NS11 Pile Driving Operations

NS12 Concrete Curing

NS13 Concrete Finishing

NS14 Material Over Water

NS15 Demolition Adjacent to Water

NS16 Temporary Batch Plants

SC10 NonStormwater Discharges

SC31 Outdoor Liquid Container Storage

SC33 Outdoor Storage of Raw Materials

SC34 Waste Handling and Disposal

SC35 Safer Alternative Products

SC41 Building and Ground Maintenance

SC43 Parking – Storage Area Maintenance

SC60 Housekeeping Practices

SC73 Landscape Maintenance

SD20 Pervious Pavements

SE1 Silt Fence

SE2 Sediment Basin

SE3 Sediment Trap

SE4 Check Dams

SE5 Fiber Rolls

SE6 Gravel Bag Berm

SE7 Street Sweeping

SE8 Sandbag Barrier

SE9 Straw Bale Barrier

SE10 Storm Drain Inlet Protection

TC1 Stabilized Construction Entrance

TC30 Vegetated Swale

TC31 Vegetated Buffer Strip

WE1 Wind Erosion Control

WM1 Material Delivery and Storage

WM2 Material Use

WM3 Stockpile Management

WM4 Spill Prevention and Control

WM5 Solid Waste Management

WM6 Hazardous Waste Management

WM7 Contaminated Soil Management

WM8 Concrete Waste Management

WM10 Liquid Waste Management

Scheduling GOGA Changes and Additions to BMP ALL PROPOSED WORK SHALL BE COORDINATED WITH GGNRA PROJECT MANAGER. This includes the Natural Resources Division through the project review process.

Scheduling GOGA Changes and Additions to BMP In the Park, "bird nesting" season provides a limitation only when project management does not incorporate a field schedule that considers nesting time-lines and habitat areas.

Note that there are a variety of nesting dates for raptors, spotted owls, and landbirds (as well as seabirds on Alcatraz and other coastal areas of the park). Be careful not to damage these areas when performing vegetation removal and earth-work disturbance.

Coordinate all projects under the Natural Resources Division through project review.

Scheduling GOGA Changes and Additions to BMP The typical rainy months for GGNRA climate are October/November through May.

A Contractor must consult with the Natural Resources Division about any vegetation planting or seeding prior to installation.

Contractors shall refer to BMP guidance on preferred methods for erosion control/sediment trapping. (See Erosion Control and Sediment Control Fact Sheets i.e. EC-4 and SE-1).

Construction activities can be disturbing processes (dewatering, grading, excavation, etc.) that should be coordinated with the Natural Resources Division. These activities can have impacts on both physical resources and biological resources. Many of these activities also have the potential to create disturbance, to the Park's natural soundscape, Park visitor's, and wildlife. The Natural Resources Division will need to approve seeds/plants and schedule for revegetation.

chrisanderson Note Unmarked set by chrisanderson

Scheduling GOGA Changes and Additions to BMP See Page 3 for further GGNRA Specific Instructions.

Scheduling GOGA Changes and Additions to BMP ALL PROPOSED WORK SHALL BE COORDINATED WITH GGNRA PROJECT MANAGER. This includes the Natural Resources Division through the project review process.

In the Park, "bird nesting" season provides a limitation only when project management does not incorporate a field schedule that considers nesting time-lines and habitat areas.

Note that there are a variety of nesting dates for raptors, spotted owls, and landbirds (as well as seabirds on Alcatraz and other coastal areas of the park). Be careful not to damage these areas when performing vegetation removal and earth-work disturbance.

Coordinate all projects under the Natural Resources Division through project review.

The typical rainy months for GGNRA climate are October/November through May.

A Contractor must consult with the Natural Resources Division about any vegetation planting or seeding prior to installation.

Contractors shall refer to BMP guidance on preferred methods for erosion control/sediment trapping. (See Erosion Control and Sediment Control Fact Sheets i.e. EC-4 and SE-1).

Construction activities can be disturbing processes (dewatering, grading, excavation, etc.) that should be coordinated with the Natural Resources Division. These activities can have impacts on both physical resources and biological resources. Many of these activities also have the potential to create disturbance, to the Park's natural soundscape, Park visitor's, and wildlife. The Natural Resources Division will need to approve seeds/plants and schedule for revegetation.

Existing Vegetation GOGA Changes and Additions to BMP It is important when applying this BMP that the Contractor take measures to reduce the potential to add or spread seed from exotic species.

The Contractor shall take measures to reduce the potential impacts to wetland vegetation by seeking guidance from GGNRA's Environmental Programs Division in areas of potential wetland vegetation.

Contractor shall seek additional guidance from the Natural Resources Division or the Cultural Resources Division when working in historic landscapes.

Existing Vegetation

It is important when applying this BMP that the Contractor take measures to reduce the potential to add or spread seed from exotic species.

The Contractor shall take measures to reduce the potential impacts to wetland vegetation by seeking guidance from GGNRA's Environmental Programs Division in areas of potential wetland vegetation.

Contractor shall seek additional guidance from the Natural Resources Division or the Cultural Resources Division when working in historic landscapes.

Existing Vegetation

Section Deleted Per GGNRA Guidance

Existing Vegetation GGNRA Changes and Additions to BMP

Existing Vegetation GGNRA Changes and Additions to BMP

Existing Vegetation GOGA Changes and Additions to BMP Objective is for soil to remain in place - Sediment overlaid on existing vegetation can cause suffocation.

CandiceS GOGA Changes and Additions to BMP Objective is for soil to remain in place - Sediment overlaid on existing vegetation can cause suffocation.

Existing Vegetation GGNRA Changes and Additions to BMP

Existing Vegetation GOGA Changes and Additions to BMP a Certified Arborist

Existing Vegetation GGNRA Changes and Additions to BMP

Existing Vegetation GGNRA Changes and Additions to BMP

Existing Vegetation GGNRA Changes and Additions to BMP

Existing Vegetation GGNRA Changes and Additions to BMP

CandiceS Line

Kennedy/Jenks Consultants GGNRA BMP Amendment

Kennedy/Jenks Consultants GGNRA BMP Amendment

Hydroseeding GOGA Changes and Additions to BMP Contractors should not use seed from the Hydroseed Mix

ONLY GGNRA approved seed is allowed in the Park.

Hydroseeding GOGA Changes and Additions to BMP Stabilizing emulsion products should be plant based, rather than from petro-chemicals

Hydroseeding GOGA Changes and Additions to BMP Hydroseeding should ONLY occur in the fall to allow for winter rain set. Hydroseeding may require supplemental watering if winter rains do not occur frequently enough to keep seeds moist during germination and establishment. Occasional watering over the summer to maintain seedlings may also be necessary. Contact the Natural Resources Division to decide whether watering is needed.

Sterile rice/straw mulch should be used to cover revegetation, but does NOT replace the possible need for watering.

Hydroseeding

The Park does NOT allow temporary planting Instead, we would plant into the hydroseeded site with other natives.

Kennedy/Jenks Consultants GGNRA BMP Amendment

Kennedy/Jenks Consultants GGNRA BMP Amendment

CandiceS Line

Kennedy/Jenks Consultants GGNRA BMP Amendment

Kennedy/Jenks Consultants GGNRA BMP Amendment

CandiceS GGNRA BMP Amendment

Hydroseeding GOGA Changes and Additions to BMP The Park does NOT allow temporary planting Instead, we would plant into the hydroseeded site with other natives.

Hydroseeding GOGA Changes and Additions to BMP Contractors should not use seed from the Hydroseed Mix ONLY GGNRA approved seed is allowed in the Park.

Stabilizing emulsion products should be plant based, rather than from petro-chemicals.

Hydroseeding should ONLY occur in the fall to allow for winter rain set. Hydroseeding may require supplemental watering if winter rains do not occur frequently enough to keep seeds moist during germination and establishment. Occasional watering over the summer to maintain seedlings may also be necessary. Contact the Natural Resources Division to decide whether watering is needed.

Sterile rice/straw mulch should be used to cover revegetation, but does NOT replace the possible need for watering.

The Park does NOT allow temporary planting.

Instead, we would plant into the hydroseeded site with other natives.

Hydroseeding

Section Deleted Per GGNRA Guidelines

Hydroseeing GOGA Changes and Additions to BMP ONLY use native species to hydroseed, or sterile non-natives (such as sterile wheat grass).

Seed mix selection must be approved by the Natural Resources Division, Vegetation branch.

The hydroseed applicator tank MUST be clean and dry prior to the addition of seed, tackifier, fiber, and water, to prevent potential contamination from previous hydroseed projects the contractor may have done.

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CandiceS Line

Hydroseeding GOGA Changes and Additions to BMP ONLY use native species to hydroseed, or sterile non-natives (such as sterile wheat grass).

Seed mix selection must be approved by the Natural Resources Division, Vegetation branch.

The hydroseed applicator tank MUST be clean and dry prior to the addition of seed, tackifier, fiber, and water, to prevent potential contamination from previous hydroseed projects the contractor may have done.

Hydroseeding

In-fill hydroseeding at GGNRA will be done by hand, no fertilizer.

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Hydroseeding GOGA Changes and Additions to BMP In-fill hydroseeding at GGNRA will be done by hand, no fertilizer.

Hydroseeding

Straw Mulch GOGA Changes and Additions to BMP Use sterile rice straw ONLY

Use plant-based tackifier ONLY

Straw Mulch

Application of mulch can be by hand or machinery, and can be punched in using feet, vehicles, or rollers, depending on the site and project.

Stabilization of mulch can be done by installing wattles across the slope, and installing netting - either jute or other organic (not plastic) netting over the rice straw.

Plastic netting is not allowed in the Park

Straw Mulch GOGA Changes and Additions to BMP Use sterile rice straw ONLY Use plant-based tackifier ONLY Application of mulch can be by hand or machinery, and can be punched in using feet, vehicles, or rollers, depending on the site and project.

Stabilization of mulch can be done by installing wattles across the slope, and installing netting - either jute or other organic (not plastic) netting over the rice straw.

Plastic netting is not allowed in the Park

Straw Mulch

Use "Rice Straw" or "Weed Free" materials where practical.

Geotextiles

Geotextiles and Mats GOGA Changes and Additions to BMP Do Not Use Plastic Netting in GGNRA

Geotextiles and Mats

Do Not Use Plastic Netting in GGNRA

Geotextiles

Coconut Fiber - also called Coir

GGNRA

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Getextiles and Mats

Geotextiles and Mats GGNRA Changes and Additions to BMP

Geotextiles and Mats

Dikes and Swales GOGA Changes and Additions to BMP

FOR EMERGENCY USE ONLY!

For Use in Emergency Response only (oil, gas and hazmat spills)

Project Managers should ensure that geotextile lined swales, or geotextiles and rock are designed per project parameters and conditions.

Dikes and Swales GOGA Changes and Additions to BMP

FOR EMERGENCY USE ONLY!

For Use in Emergency Response only (oil, gas and hazmat spills) Project Managers should ensure that geotextile lined swales, or geotextiles and rock are designed per project parameters and conditions.

Velocity Dissipation Devices GOGA Changes and Additions to BMP Seek guidance from Natural Resources on applying screens to velocity dissipation devices.

Velocity Dissipation Devices

Seek guidance from Natural Resources on applying screens to velocity dissipation devices.

Dewatering GOGA Changes and Additions to BMP Proposed dewatering activities must go to Project Review for approval by Natural Resources. Dewatering activities may require NPDES permitting, which will be handled by EPD.

Watch for contamination plumes and report immediately if spotted

Dewatering GOGA Changes and Additions to BMP Proposed dewatering activities must go to Project Review for approval by Natural Resources. Dewatering activities may require NPDES permitting, which will be handled by EPD.

Watch for contamination plumes and report immediately if spotted

Paving/Grinding

The Park prefers the use of low Volatile Organic Carbon (VOC) material for marking, painting and striping.

Paving and Grinding

The Park prefers the use of low Volatile Organic Carbon (VOC) material for marking, painting and striping.

Temporary Stream Crossing GOGA Changes and Additions to BMP Must request guidance from the Roads and Trails Division and the Natural Resources Division through Project Review.

Construction may require NPDES notice.

Temporary Stream Crossing

Must request guidance from the Roads and Trails Division and the Natural Resources Division through Project Review.

Construction may require NPDES notice.

Clear Water Diversion GOGA Changes and Additions to BMP Must request guidance from the Roads and Trails Division and the Natural Resources Division through Project Review.

Construction may require NPDES notice and additional Clean Water Act notification/compliance.

Clear Water Diversion

Must request guidance from the Roads and Trails Division and the Natural Resources Division through Project Review.

Construction may require NPDES notice and additional Clean Water Act notification/compliance.

Discharges GOGA Changes and Additions to BMP For projects that will generate hazardous waste (such as removal of lead-paint impacted soil) please request Environmental Office to procure project-specific EPA ID number.

Discharges

For projects that will generate hazardous waste (such as removal of lead-paint impacted soil) please request Environmental Office to procure project-specific EPA ID number.

Potable Water/Irrigation GOGA Changes and Additions to BMP This BMP only applies to construction irrigation.

Park managers should seek to reduce the need for permanent irrigation, match vegetation types to their use, use low-water demand plants where possible, and maintain integrity of historic landscaping.

Must request guidance from the Natural and Cultural Resources Divisions throughout Project Review.

Potable Water/Irrigation

Must request guidance from the Natural Resources Division regarding various seed mix types available, the water demand for the vegetation, and vegetation maintenance requirements.

Potable Water/Irrigation

This BMP only applies to construction irrigation.

Park managers should seek to reduce the need for permanent irrigation, match vegetation types to their use, use low-water demand plants where possible, and maintain integrity of historic landscaping.

Must request guidance from the Natural and Cultural Resources Divisions throughout Project Review.

Must request guidance from the Natural Resources Division regarding various seed mix types available, the water demand for the vegetation, and vegetation maintenance requirements.

Vehicle and Equipment Cleaning

Must request guidance from the Natural Resources Division to assist in locating the most functional and safe site for this action.

Vehicle/Equipment Cleaning

Must request guidance from the Natural Resources Division to assist in locating the most functional and safe site for this action.

Vehicle and Equipment Fueling GOGA Changes and Additions to BMP There is only one permanent fuel station at GGNRA, in the MAHE. See the MAHE Spill Prevention Control and Countermeasure Plan for additional information.

Temporary fuel operations are not allowed in the South District.

Where a temporary fuel operation is required in the North District, the Project Manager must submit plans for project review.

Temporary fuel operations must have fuel tanks temporarily added to the park Spill Prevention Control and Countermeasure Plan for any tank 55-gallons or above.

Must request additional guidance from the GGNRA Environmental and Safety Office.

Vehicle/Equipment Fueling

There is only one permanent fuel station at GGNRA, in the MAHE. See the MAHE Spill Prevention Control and Countermeasure Plan for additional information.

Temporary fuel operations are not allowed in the South District.

Where a temporary fuel operation is required in the North District, the Project Manager must submit plans for project review.

Temporary fuel operations must have fuel tanks temporarily added to the park Spill Prevention Control and Countermeasure Plan for any tank 55-gallons or above.

Pile Driving Operations GOGA Changes and Additions to BMP Any pile driving operations need to go to Project Review (for noise, vibration and fish concerns -- not related to stormwater protection).

Pile Driving

Any pile driving operations need to go to Project Review (for noise, vibration and fish concerns -- not related to stormwater protection).

Material Over Water GOGA Changes and Additions to BMP Must request guidance from the GGNRA Environmental Programs Division throughout Project Review.

Many GGNRA buildings, especially those constructed before 1982, have special considerations for lead and asbestos.

All spills require immediate reporting to the Park Dispatch or Environmental Programs Division.

Materal Over Water

Must request guidance from the GGNRA Environmental Programs Division throughout Project Review.

Many GGNRA buildings, especially those constructed before 1982, have special considerations for lead and asbestos.

Demo adjacent to Water GOGA Changes and Additions to BMP Must request guidance from the GGNRA Environmental Programs Division throughout Project Review.

Many GGNRA buildings, especially those constructed before 1982, have special considerations for lead and asbestos.

Demo Adjacent to Water

Must request guidance from the GGNRA Environmental Programs Division throughout Project Review.

Many GGNRA buildings, especially those constructed before 1982, have special considerations for lead and asbestos.

Temporary Batch Plants GOGA Changes and Additions to BMP Temporary batch plants can recycle old asphalt and asphaltic concrete on large construction jobs; consider recycling as a BMP.

Batch plants may require significant permitting and approval process; seek regulatory guidance through Project Review.

Request assistance from the Environmental Programs Division in how to remain compliant with their required analytical sampling program.

Temp Batch Plants

Temporary batch plants can recycle old asphalt and asphaltic concrete on large construction jobs; consider recycling as a BMP.

Batch plants may require significant permitting and approval process; seek regulatory guidance through Project Review.

Request assistance from the Environmental Programs Division in how to remain compliant with their required analytical sampling program.

Non-Stormwater Discharges GOGA Changes and Additions to BMP The goal here is to ensure that the project does not discharge to the stormwater system (known as an ‘illicit discharge’).

Non-Stormwater Discharges GOGA Changes and Additions to BMP Consider the following during project design:

The need for dewatering (see sheet NS-2)

Discharge to water bodies and stormdrains

Illegal Dumping - See GGNRA Environmental Programs Division guidance on dumping

Material storage - See GGNRA Environmental Programs guidance on Hazmat storage

Non-Stormwater Discharges

The goal here is to ensure that the project does not discharge to the stormwater system (known as an `illicit discharge').

Non-Stormwater Discharges GOGA Changes and Additions to BMP Consider the following during project design:

The need for dewatering (see sheet NS-2) Discharge to water bodies and stormdrains Illegal Dumping - See GGNRA Environmental Programs Division guidance on dumping Material storage - See GGNRA Environmental Programs guidance on Hazmat storage

Safer Alternatives GGNRA BMP Amendment Request guidance from the GGNRA Green Procurement Committee to choose the best available alternative product.

Employees must obtain Material Safety Data Sheets (MSDS) for any product used in the Park.

Contractors must obtain Material Safety Data Sheets (MSDS) for any product used in the Park.

Employees and Contractors must submit copies of all MSDS to the Safety Officer

Safer Alternatives

Request guidance from the GGNRA Green Procurement Committee to choose the best available alternative product.

Employees must obtain Material Safety Data Sheets (MSDS) for any product used in the Park.

Contractors must obtain Material Safety Data Sheets (MSDS) for any product used in the Park.

Employees and Contractors must submit copies of all MSDS to the Safety Officer

Safer Alternative Products GOGA Changes and Additions to BMP All pesticide and herbicide applications must be approved by the Park IMP Specialist.

Safer Alternative Products

All pesticide and herbicide applications must be approved by the Park IMP Specialist.

Landscape Maintenance GOGA Changes and Additions to BMP For proposed use of pesticides, request input from the GGNRA Integrated Pest Management Group.

For landscape maintenance in cultural landscapes, request review from the Cultural Resources Division.

Landscape Maintenance

For proposed use of pesticides, request input from the GGNRA Integrated Pest Management Group.

For landscape maintenance in cultural landscapes, request review from the Cultural Resources Division.

Silt Fence GOGA Changes and Additions to BMP Silt Fence is for sediment control (water is captured behind the fence). Silt fences are not useful on hillsides or slopes as commonly, though mistakenly, used in the Park.

Increase inches of silt fence installation to 8 inches where not restricted due to Natural Resource concerns.

The disposition of removed sediment must be approved by GGNRA.

Silt Fence

Silt Fence is for sediment control (water is captured behind the fence). Silt fences are not useful on hillsides or slopes as commonly, though mistakenly, used in the Park.

Increase inches of silt fence installation to 8 inches where not restricted due to Natural Resource concerns.

Sediment Basin GOGA Changes and Additions to BMP Proposed sediment basins require Project Review and must be done according to an approved Stormwater Pollution Prevention Plan.

Sediment Basin

Proposed sediment basins require Project Review and must be done according to an approved Stormwater Pollution Prevention Plan.

Sediment Trap GOGA Changes and Additions to BMP Proposed sediment traps require Project Review and must be installed according to an approved Stormwater Pollution Prevention Plan.

The disposition of removed sediment must be approved by GGNRA.

Sediment Trap GOGA Changes and Additions to BMP Proposed sediment traps require Project Review and must be installed according to an approved Stormwater Pollution Prevention Plan.

Check Dams

Check Dams

Fibre Rolls GOGA Changes and Additions to BMP Fiber rolls must be made of clean, weed- and seed-free biodegradable material. Products marketed as "photodegradable" are generally not biodegradable, and are not allowed within the park.

The disposition of removed sediment must be approved by GGNRA.

Fiber Rolls GOGA Changes and Additions to BMP Fiber rolls must be made of clean, weed- and seed-free biodegradable material. Products marketed as "photodegradable" are generally not biodegradable, and are not allowed within the park.

Fiber Rolls GOGA Changes and Additions to BMP Temporary soil stabilization such as fiber rolls filled with seed free rice straw or other similar materials shall be used to protect slopes prior to installation of permanent slope planting, as shown on the Contract Documents. Plastic netting is not allowed. Trenching for installation of fiber rolls shall be limited to a maximum depth of 2-inches. No field assembly of fiber rolls will be allowed. Roll sections will be overlapped by no less than 18-inches. Where large diameter fiber rolls are required stacks of smaller rolls will not be used. See BMP SE-5 (fiber rolls) in Section IX for additional information. Temporary soil stabilization practices must be in place or available on site to be put in place at any time, even during the dry season to protect the water quality in the San Francisco Bay. The Contractor will be responsible for repairing the ground where temporary soil stabilization practices cause rills or gullies.

Fiber Rolls

Temporary soil stabilization such as fiber rolls filled with seed free rice straw or other similar materials shall be used to protect slopes prior to installation of permanent slope planting, as shown on the Contract Documents. Plastic netting is not allowed. Trenching for installation of fiber rolls shall be limited to a maximum depth of 2-inches. No field assembly of fiber rolls will be allowed. Roll sections will be overlapped by no less than 18-inches. Where large diameter fiber rolls are required stacks of smaller rolls will not be used. See BMP SE-5 (fiber rolls) in Section IX for additional information. Temporary soil stabilization practices must be in place or available on site to be put in place at any time, even during the dry season to protect the water quality in the San Francisco Bay. The Contractor will be responsible for repairing the ground where temporary soil stabilization practices cause rills or gullies.

Gravel Bag Berm GOGA Changes and Additions to BMP Gravel and bags must be removed from the site when they fail or when the project is complete.

The disposition of removed sediment must be approved by GGNRA.

Gravel Bag Berm GOGA Changes and Additions to BMP Gravel and bags must be removed from the site when they fail or when the project is complete.

Sweeping

Sweeping

Sandbag Barrier GOGA Changes and Additions to BMP Use only sandbags that are certified weed free.

DO NOT use burlap bags

DO NOT use a sandbag barrier in areas where Army engineered conveyances are failing or where ponding typically occurs.

DO NOT place sandbags in roadways. Projects routinely lose sandbags placed in roadways when trucks and cars run them over, spilling contents.

Pack bags together tightly. Allow an overspill check dam in the bag barrier when placed adjacent to inlet drain.

Loose bags placed around an inlet drain are insufficient and have a history of washing into the drain, and clogging up the system.

Sandbag Barrier

Use only sandbags that are certified weed free.

DO NOT use burlap bags DO NOT use a sandbag barrier in areas where Army engineered conveyances are failing or where ponding typically occurs.

DO NOT place sandbags in roadways. Projects routinely lose sandbags placed in roadways when trucks and cars run them over, spilling contents.

Pack bags together tightly. Allow an overspill check dam in the bag barrier when placed adjacent to inlet drain.

Loose bags placed around an inlet drain are insufficient and have a history of washing into the drain, and clogging up the system.

Straw Bale Barrier GOGA Changes and Additions to BMP Only certified weed-free rice straw bales are allowed in the park.

The disposition of removed sediment must be approved by GGNRA.

Straw Bale Barrier GOGA Changes and Additions to BMP Only certified weed-free rice straw bales are allowed in the park.

Inlet Protection

Inlet Protection

Vegetated Swale GOGA Changes and Additions to BMP Will need Project Review, and guidance from the Park Vegetation Ecologist, for installation of vegetated swales or buffers.

Vegetated Swale

Will need Project Review, and guidance from the Park Vegetation Ecologist, for installation of vegetated swales or buffers.

Vegetated Buffer Strip GOGA Changes and Additions to BMP Will need "Project Review", and guidance from the Park Vegetation Ecologist, for installation…