BEsT MANAGEMENT PRACTICEs HANDbooK - Tahoe BMP

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CHAPTER 5: Soil and Vegetation ManagementTRPA <strong>BMP</strong> HandbookTable 5-3: Site Type Recommended Seed Mixes 2012Page 2
Table 5-4: Attributes of Suitable and Available SpeciesTRPA APPROVED PLANT SPECIES ATTRIBUTES TABLE 1Scientific Name 2, 3Common NameGrowth Form 4Mature Height(feet)NitrogenFixationDroughtTolerance 5SaturationTolerance 5ShadeTolerance 5Lifespan 5Fire HazardSeed(Bulk per Pound)Germination(% Typical)Purity(% Typical)Plant MaterialType 6NotesGrasses, Rushes, and SedgesAchnatherum lemmonii Lemmon's needlegrass G - B 2 No High None Intolerant Long – 95,000 – – SAchnatherum occidentale western needlegrass G - B 2 No High None Intermed. – – 285,000 72 80 SAgropyron desertorum crested wheatgrass'Nordan''Nordan' G - B 2 No High None Intolerant Long – 194,120 80 95 SAgrostis exarata spike bentgrass G - R 3 No Low Med. Intolerant Mod. Low 5,600,000 – – SBromus carinatus California brome G - B 4 No Med. None Intolerant Short Low 106,680 88 98 SBromus marginatus mountain brome G - R 4 No Med. Low Intolerant Long – 142,880 – – S Synonym: Bromus carinatus var. marginatusCalamagrostis canadensis bluejoint G - R 4.9 No Low High Intolerant Long – 3,837,472 65 – S, Sp Seed purity can be low.Carex praegracilis slender sedge G - R 2 No Low High Intermed. Long – – 90 95 SDanthonia californica California oatgrass G - MS 2 No Med. None Intolerant Short – 90,000–165,000 93 97 SDeschampsia caespitosa tufted hairgrass G - B 3.4 No Low High Intolerant Long Low 1,308,333 94 98 SDeschampsia elongata slender hairgrass G - B 3 No Med. Med. Intolerant Short – 1,860,000 70 56 SElymus elymoides squirreltail G - B 1.5 No High None Intolerant Long Low 192,000 85 96 S Seed lots often “weedy”Elymus glaucus blue wildrye G - B 3.3 No High High Tolerant Mod. Low 134,500 92 98 SElymus trachycaulus slender wheatgrass G - B 3 No High Low Intolerant Mod. Low 135,000 95 96 SFestuca brevipila hard fescue G - B 0.5 No High None Intolerant Mod. Low 591,920 – – SFestuca ovina 'Covar' Covar' sheep fescue G - B 0.5 No High None Intolerant Long Low 530,320 95 98 SAttributes apply to the species, includingElymus trachycaulus 'Revenue' and Elymustrachycaulus ssp. trachycaulus.Festuca rubra red fescue G - R 2 No Med. None Tolerant Long Low 454,087 80 98 S, SoFestuca rubra ssp. arenaria‘Boreal' creeping redfescue G - B 3 No Med. Low Tolerant – Low – – – SGlyceria striata fowl mannagrass G - B 5.7 No Low High Tolerant Short – – 85 – SpHordeum brachyantherum meadow barley G - B 2 No Med. High Intolerant Mod. – 30,000 92 93 SHordeum brachyantherumssp. californicum California barley G - B 1.6 No Med. None Intolerant Short – 30,000 – – SAttributes vary with geographic origin ofseedJuncus arcticus ssp. littoralis mountain rush G - R 4 No Low High Intermed. Long – 3,000,000 60 95 Cnt, Ct, S Synonym: Juncus balticusJuncus effusus common rush G - B 6.6 No Med. Med. Intolerant Long – 45,359,242 70 95 Cnt, Ct, SLeymus triticoides beardless wildrye G - R 3 No High High Intolerant Long – 170,304 90 95 S, SpMelica californica California oniongrass G - B 4 No Med. Low Intermed. Short – 300,000 74 90 SPhalaris arundinacea reed canarygrass G - R 5 No Low High Intolerant Long – 537,920 80 – S, SpPhleum alpinum Alpine timothy H - B 1.4 No Low Low Intermed. Mod. Low 1,044,689 24 – STRPA <strong>BMP</strong> Handbook CHAPTER 5: Soil and Vegetation Management2012 Table 5-4: Attributes of Suitable and Available SpeciesPage 1
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PREFACEThe Tahoe Regional Planning
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TABLE OF CONTENTSPREFACE...........
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3.5.5 Stormwater Treatment ........
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6.3 Projects 1 to 5 Acres and all C
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8.10.5 Maintenance ................
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Table 8-4: Federal, State and Regio
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Figure 4.3-i: Vegetated Swale .....
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INTRODUCTIONPURPOSE AND USERS OF TH
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Lake Tahoe’s world renowned blue
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Urbanization in the Lake Tahoe wate
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50 percent of the light scattering
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Figure I-c: Impervious Cover versus
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Disconnected impervious areasdrain
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POLLUTANT EFFECT URBAN SOURCES ASSO
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BEST MANAGEMENT PRACTICESHistorical
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Table I-2: Differences in BMP Retro
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CHAPTER 1: URBAN HYDROLOGY1.1 PURPO
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Figure 1-a: Runoff ProcessesTRPA BM
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Although many urbanized areas face
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watersheds to make the necessary es
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Pollutant load estimates are typica
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differ from the following recommend
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Figure 1-b: Hydrologic Processes an
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1.3.3.2 NRCS BMP CALCULATION SPREAD
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1.3.3.3 RATIONAL METHODMODEL SUMMAR
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1.3.3.4 LOAD REDUCTION PLANNING TOO
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in HMS may be event-based or contin
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1.3.3.6 POLLUTANT LOAD REDUCTION MO
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AVAILABILITY AND SUPPORTING DOCUMEN
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TYPICAL LEVEL OF EFFORTHSPF and LSP
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few days to a week of time to revie
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USACE studies recommended use of th
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during the initial site visit, or c
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Figure 2-a: Soil Horizons• Depth
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Evidence of compacted and disturbed
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UNMAPPED ROCK OUTCROPS, STEEP SLOPE
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The primary pollutants of concern o
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On the map use an arrow to delineat
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2.2.3 ADDITIONAL DATA GATHERINGAfte
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and allowable uses. Baseline Land C
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topographic survey will be required
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Table 2-3: Basis of Capability Clas
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Keep your property lean, clean,and
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treatment. This will reduce the mai
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ponds, wetlands, lakes, manmade cha
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2.3.3.2 SOILS HYDROLOGIC REPORTThe
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CHAPTER 3: PERMANENT BMP PLANNINGAN
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STORMWATER TREATMENTRepresents BMPs
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Table 3-1: Waste Management and Mat
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D. STABILIZE STEEP DISTURBED SLOPES
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This infiltration trench collects s
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3.5 PROJECTS 1 TO 5 ACRES AND ALL C
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This Page Blank.TRPA BMP HandbookCH
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unnecessary turf areas and replace
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Table 3-5: Waste Management and Mat
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3.5.2.3 SOIL STABILIZATIONA. RESTOR
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Left: Dripline erosion below a deck
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Pervious concrete parking pad locat
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3.5.5 STORMWATER TREATMENT3.5.5.1 M
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3.6.1.1 JURISDICTIONThese projects
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to perform required inspection and
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3.8.2.4 SHARED ACCESS AND EASEMENTS
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3.8.2.8 STREAM ENVIRONMENT ZONES (S
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Sediment versus erosion:Suspended s
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CONTENTSCHAPTER 4: BMP TOOLKIT ....
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CHAPTER 4: BMP TOOLKIT4.1 HYDROLOGI
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4.1.1.1 PERVIOUS PAVEMENTAlternativ
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• Tree canopy overhead can decrea
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ate determined at the time of insta
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Figure 4.1-a: Pervious ConcreteTRPA
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4.1.1.2 INFILTRATION BASINAlternati
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groundwater, depths to restrictive
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Very few performance monitoring stu
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INSPECTION AND MAINTENANCE ACTIVITI
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4.1.1.3 INFILTRATION TRENCHAlternat
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• Consult the NRCS Tahoe Basin So
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• Alternative Method: Excavate th
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Figure 4.1-c: Infiltration TrenchTR
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Figure 4.1-e: Roof Dripline Planter
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4.1.1.4 SUBSURFACE INFILTRATION SYS
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percent void space compared to 40 p
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• Ensure the surrounding surface
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4.1.1.5 RAIN BARREL AND CISTERNAlte
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• Position the rain barrel or cis
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4.1.1.6 RAIN GARDENAlternative Name
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• To manage high flows, design a
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4.1.1.7 FILTER STRIPAlternative Nam
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• The top of the vegetated filter
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Figure 4.1-i: Vegetated Filter Stri
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LIST OF FIGURESFigure 4.2-a: Slope
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Chapter 4: BMP ToolkitTRPA BMP Hand
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• Obtain and use a road abrasive
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• Mechanical broom sweepers may a
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EFFECTIVENESS CONSIDERATIONSA signi
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for dry basins or infiltration basi
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• For unpaved snow storage areas
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Figure 4.2-a: Slope Stabilization A
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Disadvantages• Not always success
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• Bind together long live branch
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Brush Layering and MattingBrush lay
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Advantages• Reduces the erosion p
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Table 4.2-1: Terracing Inspection a
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Disadvantages• Can be complicated
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• Revegetate the backfilled bench
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Figure 4.2-d: Timber Retaining Wall
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Advantages• Versatile and applica
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Table 4.2-3: Riprap Inspection and
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educe the concentration of runoff,
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Figure 4.2-g: Slope Bottom BenchFig
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• Contour Furrows - relatively de
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APPLICABILITYAll roads, driveways,
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Stormwater runoff from a paved park
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Figure 4.2-k: Grading for Sheet Flo
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INORGANIC MULCH:• Areas where org
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• Stockpile and use existing orga
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The surface under the raised decksh
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Figure 4.2-l: Rock Armor - Elevated
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Clustered boulders used for parking
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• Helps to protect wildlife.• H
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EFFECTIVENESS CONSIDERATIONSA prope
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Improper storage of hazardous mater
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• Try to use the entire product b
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facilities must be equipped with ap
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• Dispose of it properly• Be a
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Disadvantages• Additional resourc
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• All hay, cubed hay, straw, mulc
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• Sanitary sewer regulations gene
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APPLICABILITYAll vehicles, includin
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• Do not perform other vehicle or
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LIST OF FIGURESFigure 4.3-a: Curb B
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APPLICABILITY• Culverts are appli
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deterioration. The inspection crew
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APPLICABILITY• Curb and gutters a
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INSTALLATION CONSIDERATIONS• Inst
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Figure 4.3-b: Rolled CurbChapter 4:
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Advantages• Prevents the discharg
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Table 4.3-2: Storm Drain Inspection
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Advantages• Prevents scour that m
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Figure 4.3-c: Outlet ProtectionChap
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• The structure can be designed t
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INSTALLATION CONSIDERATIONS• Disc
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Advantages• Assists in the contro
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Figure 4.3-e: Slotted Channel Drain
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Advantages• May be less expensive
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Table 4.3-5: A/C Swale Inspection a
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• Prevents property damage, slope
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Figure 4.3-g: Subsurface DrainChapt
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abrasives applied during the winter
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Table 4.3-7: Rock Lined and Vegetat
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Figure 4.3-i: Vegetated SwaleChapte
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Check dams installed in water sprea
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• Design check dams perpendicular
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CONTENTS4.4 Stormwater Treatment ..
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4.4 STORMWATER TREATMENTThe primary
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4.4.1.1 WET BASINAlternative Names:
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• Surcharge storage above the wet
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Table 4.4-1: Wet Basin Inspection a
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Figure 4.4-a: Wet Basin (Concept Dr
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4.4.1.2 BIOSWALEAlternative Names:
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• Consider incorporating trees or
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Figure 4.4-b: Bioswale (Linear Basi
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4.4.1.3 DRY BASINAlternative Names:
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• Drainage design standards for t
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Figure 4.4-c: Detention BasinTRPA B
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4.4.2 FLOW THROUGH TREATMENTFlow-th
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4.4.2.1 DROP INLET INSERTAlternativ
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INSTALLATION CONSIDERATIONS• Refe
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4.4.2.2 TRASH RACKAlternate Names:
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4.4.2.3 BAFFLED VAULTAlternative Na
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• Ensure that site conditions all
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4.4.2.4 HYDRODYNAMIC SEPARATORAlter
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• Most units are designed to be c
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4.4.2.5 MEDIA FILTERAlternate Names
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Cartridge Filter• Cartridge filte
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• Vent the system as for undergro
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4.4.2.6 SEDIMENT TRAPAlternative Na
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INSPECTION AND MAINTENANCE• Regul
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Figure 4.4-e: Sediment TrapTRPA BMP
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CONTENTS4.5 Temporary BMPs for Cons
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4.5 TEMPORARY BMPS FOR CONSTRUCTION
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concrete washouts and stockpiles sh
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4.5.1.1 CONSTRUCTION PLANNING AND S
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• Measures to minimize the potent
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4.5.1.2 CONSTRUCTION BOUNDARY FENCI
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Figure 4.5-a: Construction Boundary
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4.5.1.3 DEWATERINGDESCRIPTIONDewate
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Figure 4.5-b: DewateringTRPA BMP Ha
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• Use this settled water to fill
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4.5.1.4 CLEAN WATER DIVERSIONAltern
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• Avoid disturbing aquatic specie
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• Pipe slope drain: A rigid pipe,
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Stream Isolation Techniques:• Tur
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Figure 4.5-f: Water DiversionTRPA B
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4.5.1.5 VEGETATION PROTECTIONAltern
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• Growing Space: Provide spacing
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Figure 4.5-g: Vegetation Protection
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4.5.1.6 TEMPORARY SANITATION FACILI
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4.5.1.7 DUST CONTROLAlternate Names
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• Blanket with geotextiles or veg
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4.5.1.8 VEHICLE INGRESS EGRESS MANA
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• If possible, re-use swept or va
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4.5.1.9 WINTERIZATIONDESCRIPTIONBet
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INSPECTION AND MAINTENANCEEnsure th
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4.5.1.10 CONSTRUCTION STAGINGAltern
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4.5.1.11 MATERIAL HANDLING STORAGE
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• Ensure that current Material Sa
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4.5.1.12 TOPSOIL SALVAGEAlternative
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• If topsoil will not be used for
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4.5.1.13 CONCRETE/BENTONITE MANAGEM
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Figure 4.5-i: Concrete Washout Stat
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4.5.1.14 STOCKPILE MANAGEMENTAltern
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Figure 4.5-j: Stockpile ManagementT
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4.5.2 EROSION AND SEDIMENT CONTROLR
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4.5.2.1 SWEEPINGDESCRIPTIONDuring c
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4.5.2.2 DRAIN INLET PROTECTIONAlter
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inches. Take care to ensure that no
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Figure 4.5-k: Drain Inlet Protectio
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4.5.2.3 FIBER ROLLAlternative Names
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• Adjust spacing of fiber rolls a
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Figure 4.5-l: Fiber RollsTRPA BMP H
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4.5.2.4 SILT FENCEAlternative Names
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• Turn the fabric uphill at the e
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Figure 4.5-m: Silt FenceTRPA BMP Ha
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4.5.2.5 EROSION CONTROL BLANKET SYS
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structures mark the boundaries of t
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Figure 4.5-p: Anchoring Geotextiles
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4.5.2.6 HYDROMULCH, TACKIFIER, AND
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INSPECTION AND MAINTENANCE• Hydro
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5.2 SOILSoil is a complex living sy
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Tilling green wood chips intothe so
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areas such as SEZs and in shorezone
Page 512 and 513: Large boulders provide permanent ve
Page 514 and 515: To address this TRPA’s Regional P
Page 516 and 517: to apply ½ inch of water. Water yo
Page 518 and 519: Pesticides can be degraded by sunli
Page 520 and 521: 5.3.2.5 FIRE DEFENSIBLE SPACEFire d
Page 522 and 523: etween them. For example, shrubs wi
Page 524 and 525: 5.4 PROJECT SCALE REQUIREMENTSSoil
Page 526 and 527: 5.4.1.5 PROJECT INSTALLATIONA. CONT
Page 528 and 529: percent vegetative cover, soil surf
Page 531 and 532: TRPA Revegetation Plan TemplateSoil
Page 533 and 534: (c) GRADING AND SLOPE SHAPINGDescri
Page 535 and 536: TRPA Revegetation Plan ExampleSoil
Page 537 and 538: • All machinery must be clean bef
Page 539 and 540: Common NameScientific NameScotchbro
Page 541 and 542: during dry weather. All debris, roo
Page 543 and 544: substantially different that the pe
Page 545: TRPA BMP HandbookCHAPTER 5: Soil an
Page 548 and 549: Fertilizer Management PlanProject N
Page 550 and 551: IV. MONITORINGSurface and groundwat
Page 552 and 553: I. PROJECT AND SITE DESCRIPTIONGold
Page 555: Table 5-1: Description of Revegetat
Page 558 and 559: SITE TYPE RECOMMENDED SPECIES LISTS
Page 560 and 561: SITE TYPE RECOMMENDED SPECIES LISTW
Page 564 and 565: TRPA APPROVED PLANT SPECIES ATTRIBU
Page 566 and 567: TRPA APPROVED PLANT SPECIES ATTRIBU
Page 568 and 569: CHAPTER 5: Soil and Vegetation Mana
Page 570 and 571: • Section 6.2 describes methods f
Page 572 and 573: equirements. At a minimum, training
Page 574 and 575: Vactor equipment removes sediment a
Page 576 and 577: Industrial Properties, Marinas, and
Page 578 and 579: • Rinse the rock with hose water
Page 580 and 581: EXAMPLE INSPECTION AND MAINTENANCE
Page 582 and 583: MONITORING PLAN TEMPLATE1. TITLE PA
Page 584 and 585: MONITORING, INSPECTION, ANDMAINTENA
Page 586 and 587: Sample Site123 Main StreetSouth Lak
Page 588 and 589: 3. MONITORINGIn 2011, South Lake Ta
Page 590 and 591: ATTACHMENT BWATER QUALITY DATA
Page 592 and 593: ATTACHMENT DINSPECTION AND MAINTENC
Page 594 and 595: • Discharge of stormwater from in
Page 596 and 597: PAVING SINGLE FAMILY RESIDENTIAL PR
Page 598 and 599: TRPA Shorezone permit (www.trpa.org
Page 600 and 601: CHAPTER 8: SHOREZONE PROTECTIVESTRU
Page 602 and 603: technical guidance on structural an
Page 604 and 605: Pope has developed a shorezone miti
Page 606 and 607: ADVANTAGES• Protect parcel develo
Page 608 and 609: Table 8-3: Categorical Classificati
Page 610 and 611: generate observable changes in the
Page 612 and 613:
Table 8-5: The General Geomorphic C
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8.1.8.2 TOLERANCE DISTRICT AND BACK
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Figure 8-e: Option 2—Backshore De
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Scenic Resources and project compli
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8.2 BULKHEADS AND LAKE WALLS8.2.1 O
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oth the beach immediately fronting
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Like all BMPs, bulkheads and lake w
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For a bulkhead located such that th
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Figure 8-i: Typical Lake Wall (Grav
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Table 8-9: Advantages and Disadvant
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maintains its position under wave s
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8.3.4 INSTALLATIONAs with bulkheads
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Table 8-11: Advantages and Disadvan
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V t ≥ 5R c2(Equation 4.1)Where:Vt
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8.5 BEACH NOURISHMENT AND REPLENISH
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of not being able to protect the ba
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• The material must be washed to
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nourishment will be determined by m
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8.7 BREAKWATERS8.7.1 OVERVIEWBreakw
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The procedure for determining armor
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8.8 SHOREZONE VEGETATION8.8.1 OVERV
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vegetation. Protecting a tree from
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Overall, dredging can be either a p
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The Pneuma pump is a piece of dredg
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nature of the project and the poten
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8.10 TURBIDITY CURTAINS8.10.1 OVERV
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weights or connected firmly to sand
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Figure 8-o: Turbidity Curtain Desig
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Aquatic invasive species (AIS) also
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tanks into a sewage retention and/o
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• A common problem with recreatio
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8.12 BOAT RAMP CONSTRUCTION AND VEH
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amp at the change of grade. A V-gro
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Figure 8-p: Boat Ramp DesignTRPA BM
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Table 8-22: Overview of Geotechnica
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8.14 SHOREZONE PROTECTIVE STRUCTURE
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8.14.2 ADDITIONAL CONSIDERATIONS FO
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some designated boundary or sphere
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spawning grounds and juvenile nurse
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Marine Science, School of Geoscienc
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Osborne, R.H., et. Al. (1985). Sedi
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8.16 APPENDICES8.16.1 DESIGN CALCUL
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Figure 8-r defines the primary wave
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8.16.1.2 WAVE RUN-UP FORMULA FOR BA
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• Use Equation 16.10 to calculate
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Figure 8-u: Design Wave CasesTRPA B
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Figure 8-v: Wave Setup and Run-Up f
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Alternative methods of wave calcula
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GLOSSARYAccretionMay be either a na
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eaches have no berm, others have se
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DensityMass (in kg) per unit of vol
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Fire Defensible SpaceRefers to the
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Common terms related to land covera
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PermeabilityThe property of a bulk
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ScourRemoval of underwater material
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SlopeThe degree of inclination to t
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Technical Advisory Committee (TAC)C
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ACRONYMSACES - Automated Coastal En
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NPS - Nonpoint SourceNRCS - Natural
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