HomeMy WebLinkAboutCDP 02-42; DUNN RESIDENCE; STORM WATER MANAGEMENT PLAN; 2004-07-22I
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STOR.M WATER MANAGE.MENT PLAN
FOR
Jim Dunn ·
Via Real Apartments #9
2701 Avenida de Anita
Carlsbad, CA 92008
PROJECT:
DUNN RESIDENCE
CDP 02-42
HOP 02-10
PREPARED BY:
Aqaaterra=Engineering Inc.
1843 Campesino ·Place
Oceanside; CA 92054
Kristin tip$ka Borer, PE
tele: 1e0-439-2802
fax: 760-439-2866
June 28, 2004
Revised July 22, 2004
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S.TORM WATER MANAGE-MENT PLAN
. FOR
Jim Dunn
Via Real Apartments #9
2701 Avenida de Anita
Carlsbad, CA 92008
PROJECT:
DUNN RESIDENCE
CDP 02-42
HDP 02-10
PREPARED BY:
Aquaterra Engineering Inc.
1843 Campesino Place
Oceanside, CA 92054
tele: 760-439-2802
fax: 760-439-2866
June 28, 2004
Revised July 22, 2004
Prepared under the supervision of:
orer, PE C57860
Exp. 6/30/06
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DUNN RES1DENCE
Storm Water Management Plan
TABLE OF CONTENTS
1. DESCRIPTION OF PROPOSED PROJECT
Location Map, USGS Map,. Site Plan
2. APPLICABLE lAWS, REGULATIONS, POLIC1ES AND REQUIREMENTS
3. CHARACTERIZA TiON OF PROJECT RUNOFF
4. POLLUTANTS OF CONCERN
5. MITIGATION MEASURES TO PROTECT WATER QUALITY
BEST MANAGEMENT PRACTICES (BMPs) Priority--~r-oject Category BMPs
5.1 Construction BMPs
5.2 Post-Construction BMPs
5.2.1 Site Design BMPs
5.2.2 Source Control BMPs
5.2.3 Treatment Control-BMPs
6. OPERATION & MAINTENANCE OF BMPs
Cost Analysis of BMP Implementation and Maintenance
7. SUMMARY/CONCLUS1ONS
ATTACHMENT LISTING
A) Hydrology Report
B) Specification for Catch Basin with Filtration Media
C) "NPDES Permit "Lite" for Non-technical _Readers"
D) "General Categories for· Water Pollution"
E) "Non-point Sour~ Pollution: The Nation's Largest Water Quality Problem"
F) Resources and References
G) Home Owner Training Log _
H) Best Management Practices, Caltrans Storm Water Quality Handbook, 2003
WM-1 "Material Delivery & Storage
WM-4 "Spillage Prevention and Control
WM-5 "Solid Waste Management"
SC-7 "Street Sweeping & Vacuuming"
NS-1 "Water Conservation Practices"
NS-7 "Potable Water/Irrigation"
REFERENCES
1) Stormwater Standards Manual, Ordinance No. 9426 {N.S.)
2) Hydrology Manual, County of San Diego
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1. DESCRIPTION OF PROPOSED PROJECT
.Project Location: Th~ 2.6 acre· site is currently vacant. The site exists at the northerly
terminus of Highland Drive. Carlsbad Village Drive borders the project site on the
southeasterly edge; Highland Drive is adjacent the northwesterly boundary line. The
site is surrounded on the south, southwest and northeast by single family residences,
of varying lot sizes,. The existing terrain is sloping down in the westerly direction
varying. from 10 to 40%.
Proiect Description: The proposed development includes the construction of one single
family home with a detached garage. T-he home will take access directly off Highland
Drive. The residential structures shall be wood framed construction with concrete floor
slabs on graded building pads. A Vicinity Map is attached for review on the following
pages.
Surrounding Land Use: The majority of the adjacent properties are-low-density----..
developed residential.
Proposed Project Land Use: The subject application will use the existing residential
designation. No land use or zoning change is required for approval of this project.
Hydrologic Unit: Hydrologic Unit: This project is ·1ocated within Carlsbad Watershed and
the Buena Vista Creek Hydrologic Area, and the Vista Hydrologic Subarea numbered
904.22 The Carlsbad Hydrologic Unit is approximately 210 square miles in area and
extends from the headwaters above Lake Wohlford· in the east to the Pacific Ocean in
the West, and from Vista and Oceanside in the North, to Solana Beach, Escondido,
and the -community of Rancho Santa Fe to the South. This project is a minute portion
of this hydrologic area at less than 0.0000.0001 % of the total area.
A Hydrology Report is included as Attachment "A".
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2. APPLICABLE LAWS , REGl)LATIONS, POLICIES-AND REQUIREMENTS
The Stormwater Management Plan (SWMP} is required under the County of -San Diego
Watershed Protection, Stormwater Management, and Discharge Control Ordinance
(section 67.817). The purpose of this (SWMP) is to address the water quality impacts
from the proposed improvements on the Dunn Residence. Best Management Practices
(BMPs) will be utmzed to provide a long-term solution to water quality. The SWMP is
also intended to ensure the effectiveness of the BMPs through proper maintenance that
is based on ·long-term fisca:I planning. The SWMP is subject to revtsions as -needed by
the engineer.
BENEi=IClAl USES
the beneficial uses for the hydrologic unit are included in Tables 2.1 and 2.2. These
tables have been extracted froni the Water Quality Control Plan for the San. Diego
Basin.
MUN -Municipal and Domestic Supply: Includes uses of water for community , military,
or individual water supply systems. including, but not limited to, drinking water supply.
AGR -Agricultural. Supply: Includes uses of water for farming, horticulture, or ranching
including but not limited to, irrigation, stock, watering, or support of vegetation for range
grazing.
IND -Industrial Services Supply: Includes uses of water for industrial activities that do
not depend primarily on water quality including, but not limited to, mining, cooling water
supply; hydraulic conveyance, gravel washing, fire protection, or oil-well re-
pressurization.
REC 1 -Contact Recreation: Includes uses ·of water for recreational activities involving
body contact with water, where ingestion of water is reasonably possib_le. The~e uses
include, but are not limited to, swimming, wading, water.skiing, skin and.SCUBA diving,
surfing, white water activities, fishing, or us of natural hot springs .
REC2 -Non-Contact Recreation: Includes the use$ of water for Iecreational involving
proximity to water, but not normally involving body contact with water, where ingestion
of water is reasonably possible. These uses include, but are not limited to picnicking,
sunbathing, hiking, camping, boating, tide pool and marine life study, hunting,
sightseeing, or aesthetic enjoyment in conjunction with the above activities.
WARM -Warm Freshwater Habitat: Includes uses of water that support warm water
ecosystems including, but not limited to, preservation or enhancement or aquatic
habitats, vegetation, fish or wildlife, including invertebrates.
COLD -Cold Freshwater Habitat Includes uses of water that support cold water
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ecosystems including, but not limited to, preservation or enhancement of aquatic
habitats, vegetation, fish, or wildlife, ·including invertebrates.
WILD -Wildlife Habitat: Includes uses of water that support terrestrial ecosystems
Jncluding,. but not limited to, preservation and enhancement or terrestrial habitats,
vegetation, wildlife, (e.g. mammals, birds, reptiles, amphibians, invertebrates), or
wildlife water and food sources.
RARE-Rare, Threatened or Endangered Species: Habitats necessary, at least in part,
for the survival and successful maintenance of plant and animal species established
under state or federal law as rare, threatened, or endangered.
INLAND SURFACES WATER$
Inland Surfaces waters have-the following beneficial uses as shown on Table 2.1
Table 2.1 Beneficial U$es for Inland Surfaces Waters
Hydro logic
Unit MUN IND AGR REC1 REC2 WARM. RARE WILD
Number
904.22 X X X X X X X
GROUNDWATER .
Groundwater beneficial· uses includes agricultural and potentially municipal and
industrial, none or these beneficial uses will be impaired or diminish due to the
construction and operation of this project.
· Table 2.2 Beneficial Uses for Groundwc;1ter
Hydrologic
Unit MUN
-Number
904.22 X
* Excepted from Municipal
x Existing Beneficial Use
0 Potential Beneficial Use
AGR IND1
X X
IND2 COLD
X X
X
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3. CHAR.~CTERIZATION OF PROJECT -RUNOFF
According to the California 2002 303d list published by the San Diego Regional Water
Quality Control Board; Pacific Ocean and the Buena Vista Creek are impaired water
bodies in Carlsbad Watershed. Pacific Ocean is located approximately 1 mile
downstream from the project site.
• The project location and watersheds have-been compared to the current
published 303d list of ·impaired water bodies and the nearest impaired
water bodies are the. Buena Vjsta Creek at the Pacific Ocean, impaired by
a high coliform count (bacteria inclfoators).
Educational. materials included in this SWMP, as Attachments, will be
distributed by the project owners to future owner. Knowledge of the
pollutant causing action will ·limit pollution and therefore limit pollutants in
the storm water runoff:
EXPECTED DISCHARGES
There are no sampling data available for the existing site condition. In addition, the
project is hot expected to generate significant amounts of non-visible pollutants.
However, the following constituents are commonly found on similar developments and
could affect water quality: ~
T bl 3·1 P a e
Basin
X
A
B
C
D
Totals -
Sediment discharge due to construction activities-and post-construction
areas left bare.
Nutrients from fertilizers
Hydrocarbons from paved areas.
Pesticides from landscaping and home use.
re an d P tD OS eveopmen tR ff uno.
Q100 (9fs) Q100 (cfs)
Area (acres) Existing Proposed
0.46 0.70
. 0.1.9 0.37
0.08 0.16
0.05 0.10
0.11 0.22
0.70 0.85
The ~alculated difference between the pre & post-development Q100 is 0.15 cfs.
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4. POLLUTANTS OF CONCERN
Sources and Activities contributing to Storm Water Pollution in this Hydrologic Area are
agricultural runoff, livestock and domestic animals, urban runoff, sand mining, and
septic systems.
Pollutants of concern generated· by the development of this project are mainly
concentrated around trash disposal and the potential leakage of automobile fluids from
pavement and runoff from the impervious surfaces. Possible pollutants found on this
site may include:
a) General site litter
b) Food waste & Grease
c) Cleaning Solvents
d) Fertilizer.& Pesticides
e) Wash down water from Asphalt
f) Hydrocarbons from pavement surfaces
g) Sediment from Construction Activities
CONSTITUENTS OF CONCERN
The outlet of the Buena Vista ereek at the Pacific Ocean is experiencing impairments
to beneficial uses due to excessive coliform bacteria. The major impacts of this
impairment are surface water quality degradation,_ habitat loss, invasive species. and
channel bed erosion.
5. MITIGATION MEASURES TO PROTECT WATER QUALITY
BEST MANAGEMENT PRACTICES (BMP)
According to the Model Standard Urban Stormwater Mitigation Plan for San
Diego County, Port of San Diego, and Cities in San Diego County, (SUSMP),
approved by the San Diego County Regional Water Quality Control Board June
12, 2002,and the City of Carlsbad SUSMP development projects with more than
5000 S.F. of hillside disturbance are considered "priority projects" and therefore
have certain storm water mitigation design requirements. The following a list of
those requirements:
Hillside Landscaping shall include the following:
HHfside areas, as defined in City of Carlsbad SUSMP, that are disturbed
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by project development shall be landscaped-with deep-rooted, drought
tolerant plant species selected for erosion control, satisfactory to the City
of Carlsbad.
Best Management Practices (BMPs) are intended to provide measures which minimize
or elimihates the introduction of poll"utants into the storm water system. All constituents
of concern will be removed from the storm water -runoff as to minimize impact of
development on impaired water bodies.
5.1 Construction BMPs
To address water-quality for the project, -SMPs will be implemented during construction
and post-construction. The construction activities are dual regulated by the California
State wide General Construction Permit and San Diego County Ordinances.
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Gravel Bag Barrier
Material Spill Prevention and Control
Spill Prevention and Contrdl
Concrete Waste Management
Water Conservation Practices
Gravel Bag Berm
Material Delivery and Storage
Stockpile Management
Solid Waste Management
Stabilized Construction Entrance/Exit
Vehicle and Equipment Maintenance
Dust Controls
Permanent re-vegetation of all disturbed areas
Scheduling to reduce Erosion of Wind, Rain Runoff
5.2 Post-Construction BMPs
Post-D_evelopment anticipated·pollutants from this··projectand the driveway.should be
minimal and are listed in Table 5-.1 · ·
Table 5.1
· Project
Cata9ory
Hillside
Development
X = anticipated
P = Potential
. Sed
X
Nutrients · Hvy Org
Met Comp
X
(1) A potential pollutant if landscaping exists on-site
Trash
'&Deb
X
(2) A potential pollutant if the project includes landscaping.
Oxy Oil &
Dem Grease
X X
Bact& Pesticides
Virus
X
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Pollutants, of concern ge11erated by a. developed residential subdivision are mainly
concentrated around trash disposal and the potential leakage of automobile fluids from
pavement runoff from the private drive.
Possible pollutants found on this site may include:
a)
. b)
c)
d)
e)
:f)
General site litter
Food waste & Grease
Cleantng Solvents
Fertilizer & Pesticides
Wa~h down water from Asphalt
Heavy Metal & Petroleum Products
5.2.1.Site Design BMPs
This project was designed to minimize, to the maximum extent practicable, the
introduction of pollutants and conditions of concern that may result in significant impacts
to the storm water conveyance system. Site Design BMPs are designed to maintain
pre-development runoff characteristics. The following concepts were applied to this
project in the following manner:
1) Minimize impervious footprint
1) Increase building density
2) Construct Walkways, trails, patios, overflow parking lots and alleys, and other
low-traffic areas with permeable _surfaces, such as pervious concrete, porous
asphalt, unit pavers, and granular materials;
3) construct streets, sidewalks, and parking aisles to the minimum widths
necessary, provided that public safety and walkable environment for pedestrians
are· not cornpromised; and .
4) minimize the use··of ·impervious surfaces, such as decorative concrete, in the
landscape d~sign. · · ·
The project has been designed to minimize grading activities. Driveways will be
designed to access house pads in the shortest reach possible .. Pad area make up
approximately 20%, leaving 80% of the property left in a permeable state.
2) Conserve natural area.
1) Concentrate or cluster development on the least environmentally sensitive
portions of a site while leaving the remaining land in a natural undisturbed
condition.
2) Use natural drainage systems to the maximum extent practicable.
This project was designed to minimize graded areas. Pad areas make up approximately
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20% of the site, leaving 80% of the property left in a permeable state.
3) Minimize directly: connected Impervious Area.
Impervious areas are mainly the driveways and buildings and must be connected to the
access road However, the driveway area. Will be minimized due to proximity of the pads
to the road.
4) Maximize canopy interception and water conservation-.
1) Preserve existing native trees and shrubs; and
2) Plant additional native or drought tolerant trees and large .shrubs in place of
non-drought tolerant exotics.
Only 20% of this site will-be disturbed. On the disturbed area, the site will be planted
with native landscaping to the maximum extent practicable.
5) Convey runoff safely from the tops of slopes.
A brow ditch will help prevent runoff from.eroding slopes.
6) Vegetate slopes with native or drought tolerant vegetation.
AU slopes will be vegetated immediately after grading is complete
7) Stabilize permanent channel crossings.
Not-applicable -No channel crossings.
8) Install energy dissipaters, such as rip-rap, at the outlets of new storm drains, culverts,
conduits, or channels that enter unlined channels in accordance with applicable
specifications to ·minimize impacts to receiving waters.
An energy dissipater will be· added to decrease velocity of runoff as it is outlet from the
brow ditch.
5.2.2 Source Control (Non-Structural) BMPs
(N1) Owner Education -The Project Owner will educate new owners of general
good housekeeping practices that contribute to the protection of storm water
quality by providing information on Best Management Practices. (See All
Attachments)
Construction (Erosion Control) BMPs will be in place during grading per plans
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approved by City of Carlsbad.
{N2) Activity Restrictions -AU activities will comply with Order 2001-01. Waste
Discharge Requirements of the Urban Runoff From the Municipat Separate Storm
Sewer Systems (MS-4) Regulations,. and the City of Carlsbad Municipal Code
and Zoning Ordinance. Specific restrictions of the site will include, but are not
limited to, the following:
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No Hosing of Paved Area -Parking surfaces and driveways wifl not be
cleaned by "hosing down", but will instead be swept clean or vacuumed,
with collected waste disposed of in a covered container. Oil stains wm not
be cleaned via an acid wash of the driveway. Instead, oil-stains and leaks
will be cleaned using rags or .absorbents, then swept using granuJar
solvent material, and filially mopped. Mop water shall be disposed of into
a sanitary sewer facility.
Trash -No rubbish, trash, garbage or. other waste material shall be kept on-
site or on any private street abutting the properties, except in sanitary
container located in appropriate areas (trash containers).
Drainage -There shall be no interference with or alteration of the
established drainage pattern on the site unless an adequate alternative
provision is made for proper drainage with the prior written approval of the
County.
Outside Storage -Storage of materials will not be allowed outside the main
buildings unless authorized by the governing agencies. A revised SWMP
will be issued in this event detailing the BMPs associated with outdoor
storage.
Pet Waste -Pet waste will be disposed of .in trash containers or sewers and
not be allowed in public gutters·.
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(N3) BMP Maintenance -Owner shall assign a person who will be responsible for
implementation of each non-structural BMP and scheduled cleaning of all structural
BMP facilities. (See Section 5.)
{N4) Local Industrial Permit Compliance -Owners will be responsible for
relaying requirements to any future owner.
{NS) Spill Contingency Plan -Owners shall provide and implement a spill
contingency plan if Hazardous Wastes are known to be stored on property See
WM-4. (Attached).
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(N6) Owner Training -Owners wilt-periodically provide information from this
document and avaHable inforrnatlon from other Agencies to educate home owners-
of good housekeel)1ng-practices that contribute to the protection of storm water
quality. This education will address, but is not limited to the use and storage of
chemicals, pesticides, BMPs regarding site cleanup, litter control and tr-ash
collection. (See all Attachments.)
(N7) Runoff-Minimizing Landscape Design -Plants with similar water
requirements shall be grouped in order to minimize the amount of excess water
flow. See Ns-1· & NS-7 (attached).
5.2.3. Treatment Cohtrol (Structural) BMPs
Flow based BMPs will be designed to mitigate (infiltrate, filter or treat) the flow of runoff
produced from a 24--hour 85th percentile storm event, as determined form the 1ocal
historical rainfall record and shown on the official County lsopluvial Map for the 85th
percentile storm. The Flow is calculated as:
Q=CIA· Q = allowable Q
I = 0.2 in/hr for 6 hour event = 1.2 in /hr.
A= Proposed Impervious Surface= 0.12 ac
C = coefficient of runoff= 1.0
Q =CI A= 1.0 (1.2) (.12) = 0.149 cfs
The treatment control structure· is sized to allow for a flow rate of 0.58 cfs, which is greater
than the 85th percentile storm.
(S1) Catch Basin with Water Quality Filtration Media--Surface runoff from
buildings shall be directed to a catch basin structure containing rock filtration
media. The basin is designed to capture run-off contaminate that-normally enter
inlets during low to medium flow and does not inhibit flow during high flow storm
water runoff events. The filtration device shall be installed to specification and
maintained by the owners. The· specified inlet is appropriate for removing all
pollutants of concern. (See Attachment "B").
6. MAINTENANCE STORMWATER MANAGEMENT PROGRAM
Pollution Prevention BMPs {MEP based):. The owner of the project will be responsible
for developing a plan to educate new home owners regarding limiting exposure of
· pollutants to storm water. This plan will include education regarding proper use and
disposal of pollutants and plan for Spill Cleanup procedures.
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Maintenance -Responsibility: All BMPs and erosion control devices shall be maintained,
repaired and· replaced as needed by each property owner. The operation and
maintenance requirements for post-construction BMPs are shown in Table 6.1
Table 6.1
Type of BMP: -Catch Basin with Water Quality
Filtration Media
(S1)
Routine Action Visual Inspection
Maintenance Indicator Accumulation of silt and debris. Signs of
-erosion. -
Field Measurement Accumulation of debris in box.
Measurement Frequency Inspect system monthly
Maintenance Activity Remove debris and maintain clear
filtration media.
The maintenance of post-construction BMPs will be the responsibility of each home owner
of the project. The average annual cost for maintaining the catch basin filtration media _
associated with this project will be approximately $100/year.
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7. SUMMARY/CONCLUSIONS
This SWMP has been prepared in accordance with the Watershed Protection, Stormwater
Management, and Discharge Control Ordinance, the Stormwater Standards Manual, and
the City of Carlsbad SUSMP. This SWMP has evaluated and addressed the potential
pollutants associated with this project and their effects on water quality. A summary of the
facts and findings associated with this project and the measures addressed by this SWMP
is as follows:
The beneficial uses for the receiving water have been identified. None of these
beneficial uses wm be imp~ired or diminished due to the construction and
operation of this project.
The proposed project will not substantially alter the existing drainage pattern-. This
project is a single family residence disturbing only 20% of the site. The remaining
site is left in its permeable state.
The proposed construction and post-construction BMPs address mitigation
measures to protect water quality and protection of water quality objectives and
beneficial uses to the maximum extent practicable.
Certification of Responsibility
Inspection and maintenance of BMPs is the responsibility of Owner of this project
. untiUt is transferred, by title, to the new home buyers. A-contract for trash
management and litter control and landscape maintenance, will be made with
outside contractors, as necessary.
The future home -owners will be instructed· about-environmental procedure
regarding contamination and clean-up procedures.
All documents, including this Storm Water Management Plan, relating to site
maintenance will be kept on-site and will be made available to City Inspector, upon
-request.
The following person is in responsible charge of education of owners, and
implementation and maintenance of the required BMP's.
Name: Jim Dunn Telephone: (760) 845-4503
Jr~J~tJY
Date
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·HYDROLOGY REPORT
FOR
James Dunn
Via Real Apartments #9
2701 Avenida De Anita
Carlsbad, CA 92008
,PROJECT
Dunn Residence
CDP 02-42/ HOP 02-10
DRAWING NO. 421-9A
PREPARED BY:
Aquaterra Engineering Inc.
1843 Campesino Place
Oceanside,CA 92054
tele: 760-439-2802
fax: 760-439-2866
July 22,2004
Date
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Project .Description
The 2.6 acre project site is currently vacant . The surrounding adjacent 1ands
have been partially developed-with single family structures on standard sized
residential lots. Access to the project is Highland Drive. The project is proposed
to be developed with one residential buUding and a garage structure with .paved
driving surfaces.
The City of Carlsbad intends to upgrade and realign an existing public storm
drain system which crosses the site and_ transports the offsite storm flows.
The existing site topography slopes in the northwesterly direction with steep
slope gradients. The proposed building pad shall be graded for the residential
structures, the remainder of the site shall remain as steep slopes. The
development will alter the existing drainage patterns from the existing. pre-
development condition. Instead of all storm flows drainage to the adjacent
canyon, a portion of the site, principally the developed building pad (0.27 acres),
will be collected by catch basins and piping system that connects directly to the
City constructed drain system. ,
As a result of the propqsed construction of the structures and paved surfaces,
the calculated 100 year frequency storm. water volumes will be increased by 0.15
· cfs.
As mitigation for the calculated increase storm water discharge volumes and
velocities, the storm flows from the impervious surfaces shall be discharged
onsite and conveyed through shallow grass lined channels and a collection box
with filtration media to remove all polluting contaminants and reduce the
drainage .flow velocities before_ leaving-the-project.site.
There is no historical evidence that fhe downstream water courses are
inadequate to handle the storm flows. Due to the minimal modification of the site
development, we do not believe that any downstream properties will be
adversely impacted by the proposed development..
The project site is not located near a floodway or floodplain or a water course
:plotted on any official floodway map.
Conclusion
As a result of the project layout and the inclusion of design features, we do not
anticipate any negative impacts to downstream properties.
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Hydrology & Hydraulics Report
City of Carlsbad
This Hydraulics and Hydrology Report was prepared using the following
Manuals:
Hydrotogy Manual, County of San Diego , Dated June 2003
Drainage of t-fighway Pavements, U.S. Dept. of Transportation
The Rational Method was used to determine the 100 yr. storm Q values.
The Rational Method uses the following formula to establish the flow:
where,
Q=CIA
Q = the peak runoff in cubic feet per second
C = Runoff coefficient representing the ratio of runoff to
rainfall
I = time average intensity in inches per hour
A = Area of the subbasin in acres
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County of San Piego
Hydrology ·Manual
Rail1fall Isopluvla/s
I .',
100 Year Rnlnfnll Event-24 Hours
'lsopluvlaJ !Inches)·
.,,. .. ']"'·~·i,·r ~ } j.:' ·f,:~, ::.-_;:.G1···s, "':;J.t;,0~
:w.r.,,.. •• ~,~..::,•,:,.,u V\.._,., .. ,,,.b....,.r~•••n
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------... ------------. i'
"
10.0
9.(i
8.0
1.0 ,~
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5.0
4.0 I
I 3.0
2.0 I
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EQUATION
I = 7.44 Pa o-0.645
I = Intensity (in/hr)
Pa = 6-Hour PreclpltaUon (In)
0 = Duration (min)
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3.0
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1.0
s o 1 a 9 10 15 20 30 40 50 1 2 3 4 5 6 Minutes
Duration
(
Hours
Intensity-Duration Design Chart .. Template
,'
i
Directions for Appllcatlon:
(1) Fram prepipltatlon maps determine 6 hr and 24 hr amounts
for thuelected frequency. These maps are included in the
County Hydrology Manual (10, 50, and 1 oo yr maps lnoludl.!d
In the Design and Procedure Manual).
(2) Adjust 6 hr precipitation (if necessary) so-that it ls within
the range of 45% to 65% of the 24 hr precipitation (not
applicaple to Desert).
(3) Plot 6 hr precipitation on the right side of the chart.
(4) Draw a line through the point parallel to the plotted line$.
(5) This line Is the intenslty-durat1011 curve for the locatio~
being analyzed.
Appllcatlon Form: I
(~) Selected frequency __ year ·
I " -~ ,_, p "';,9> {;,::, .,.. '· 6 5 I (2) (b) Pe= 1.:::.-, :i7 _In., P24 :::-7,> 'P24 = ~ %
(c) Adj_usted p6<2l ~ Z .S in.
(d)tx= __ min •.
(e) I = _.__ in./hr.
I
Note: This chart replaces the Intensity-Duration-Frequency
' curves used since 1965.
. . ' -,L--,l-.,----1··· '·-··+-·· '--····--
6~rallon ·!····1j5
··-~--.. ~·
2j5·l··n~j5
·· fl4j5··i·-~ ,·";5 f
,-=l .~~: i*11~~t;;;~w:~1;.~~ :~4s:1~::1~~:!~ ~~::; ~:'.~~
, __ 10 .. 1.68 H?.G3~.37L4,21 ;5.0St5,90 _6.747 7.5B .I ii,42, 9.27. 10.11
___ 1s _1.3oJt.95 2.59JU~i~-sa1.4.54 s4?Ts,e4 f.s.49_ 1.13·__7.1a
____ 20 ).08_[1.62 2,15~9-~,2313.77 4.~ 4.85 ,f5,39 ·t5.93 6.46,
25J>.R VIO 1,B[1J?.33.2.8D 3.27 __ 3.73 ... 4,20 __ 4.87_'.5.13_ 6.EiO
---30 "0.83 __ 1.24 1.6§.J.2.0712.49 2.90 _3.32 j,3,73 4.16 4.66 _4.98·
_5 ~m l:~R.~t~li~i~~Hi :~
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--300 0.19 10.2a 0.381 0.47 t 0.56_ 0.66 6:)5 . 0.85 ·1·· 0.94 ·r 1.03 , 1. 13 360 0.17 10,25 0.33 0,42 10,50 0.5B, 0,67 O.i5 0.84 0.92 1,00
FIGUitE ~
\*·. (
-------------------
San Diego County Hydrology Manual
Date: June 2003
Table3-l
Section:
Page:
RUNOFF COEFFIClENTS FOR URBAN AREAS
Land Use r Runoff Coefficit)nt "C"
Soil'Type
. NRCS Elements Coun Elements %IMPER. A B
Qai;!,i,tmm~.d,!iatyr~J,!~n:!1i1,!JN~wrn!L .... _ .J?~mi!!n~nt_ On~.!t~1>.ace 0* 0.20 0.25 '
....... ,.t9JYJ)J!I~it:YJlS'.~jg~,P.ti.ql(kQ.~L~.-··-.£.~1!.tj?1.1.Q DU/ A or less _____ 10 Q.27 0.32
Low Density Residential (LDR) Residential, 2.0 DU/A or less 20 0.34 0.38
Low Density Residential (LDR) Residential, 2.9 DU/ A or \ess 25 0.38 0.41
Medium Density Residential (MDR) R,esidential, 4.3 DU/A or less 30 0.41 Q.45
' Medium Density Residential (MDR) Residential, 7.3 DU/A or less 40 0.48. 0.51
Medium Density Residential (MDR) Residential, 10.9 DU/A or.less 45 0.52 0.54
Medium Density Residential (MDR) Residential, 14.$ PU/A or less 50 0.55. 0,58
High Density Residential (HDR) Residential, 24.0 DU/A or less 65 0.66 0.67
High Density Residential (HDR) Residential, 43.p PU/Ao"!' less 80 0.76! 0.77
Commercial/Industrial (N. Com) Neighborh_ood Commercial 80 0.76 0.77
Commercial/Industrial (G. Com) General Commercial 85 0.80 0.80
Commercial/Industrial (O.P. Com) Office Professional/Commercial 90 0.83 0.84
Commercial/Industrial {Limited I.) Limited Industri11l 90 0.83 0.84
Commercial/Industrial (General I.) General Industrial 95 0.87 0.87 '
C
{UQ,.,.
~
0.42
0.45
0.48
0.54 ·
0.57
0.60
0.69
0.i!8
0.78
0.81
0.84
0.84
0.87
3
6 of26
D
0.35
0,41
0.46
0.49
0.52
0.57
0.60
0.63
0.71
0.79
0.79
0.82
0.85
0.85
0.87
*The values associated with 0% impervious may be used f9r direct calculation of the runoff coefficient as described: in Section 3.1.2 (representing the pervious rtmof'f
coefficient, Cp, for the soil type), or for areas that will remain undisturbed in perpetuity. Justification must be given that the area will remain natural forever ( e.g., the arel:l
is located in Cleveland National Forest).
DU/ A == dwelling units per acre
NRCS = National Resources Conservation Service
\ !
3-6
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San Diego County Hydrology Manual
· Date: June 2003
Section:
Page:
3
12 of26
Note that the Initial Time of Concentration show.d be reflective of the g~neral land-use at the
upstream end of a drainage basin. A single lot with an area of two or less acres does not have
a significant effect wpere the drainage basin area is 20 to 600 acres.
Table 3-2 provides limits of the length (M:aximum Length fLM)) of sheet flow to be used in
hydtology studies. Initial T; values based on average C values for the Land Use Element are
also included. These values can be used in planning and design applications as described
below. Exceptions may be approved by the "Regulating Agency" when submitted with a ..
detailed study.
Table-3-2
MAXIMUM OVERLAND FLOW LENGTH <LM)
& INITIAL TIME OF CONCENTRATION (Ti)
Element* DU/ .5% 1% 2% 3% 5% 10%
Acre LM Ti LM Ti LM Ti LM . Ti LM Ti LM Ti
Natural 50 13.2 70 12.5 85 10.9 100 10.3 100 8.7 100 6.9.
'1 ---•• ----· -----
LDR 1 50 12.2 70 11.5 85 10.0 .· 100 9.5 .100 8.0 100 6.4 -I LDR 2 50 11.3 70 10.5 85 9.2 100 8.8 100 7.4 100 5.8
LDR 2.9 50 10.7 70 10,0 85 8.8 95 8.1 100 7.0 100 5.6
MDR 4.3 50 10.2 70-9.6 80 8.1 95 7.8 100 6.7 100 5.3
·MDR 7.3 50 9.2 · 65 8.4 80 7.4 95 7.0 100 6.0 100 4.8
MDR 10.9 50 8.7 65 7 . .9 . 80-6..9 90. 6.4 100 5~7 100 4.5
MDR 14.5 50 8.2 65 7.4 80 6.5. .··90 6.0 100 5.4 100 4.3
-HDR 24 50 6.7 65 ., 6.1 75 5.1 90 4.9 95 4.3 100 3.5
HDR 43 ~o 5 . .3 65. 4.7. 75 4.0 85 3.8 95 3.4 100 2.7
·N.Com 50 5.3 60 4.5 75 4.0 85 3.8 95 3.4 100 2.7
G.Com l 50 4.7 60 4.1 75 3.6 85 3.4 90 2.9 100 2.4
0.PJCom 50 4.2 60 3.7 70 3.1 80 2.9 90 2.6 100 2.2
Limited I. 50 4.2 60 3.7 70 3.1 80 2.9 90 2.6 100 2.2
:
Generali. 50 3.7 60 3.2 70 2.7 80 2.6 90 2.3 100 1.9
Q*See Table3-1 fur more detailed descripti011
3-12
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.6.E
Feet
5000
4000
Tc
Tc
L
D..E
=
=
=
=
EQUATION
(
11.9LS)0.385
.n.1:
Time-of~onceritration (hours)
Watercourse Distance (miles)
Change in elevation al!>ng
effective slope line (See Figure 3-5){feet)
3000
300
200
L
Miles Feet
100
~
. 3000
0.5 ' '
30
20
10
300
5
200
AE L
SOURCE: C;:ilifomia Division of Highways (1941} arid Kirpich {1940)
Nom08raph for Determination of
' '
Tc
Hours1-Minutes
1 60
50
40
30
20
18
16
14
12
' ' 10
' 9
8
7
6
5
4
3
Tc
Time of Concentration (Tc) or Travel Time (Tf) for Naiural Watersheds
--·
~~-~
FIGURE
~ -... _
I DaE ,,
K
'
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/
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TABLE 11.--INTERPRETATIONS FOR LAND MANAGEMENT--Continued
.\:tap Soil
symbo!
CaD2 Calpine coarse sandy loam,. 9 to 15 percent slopes,
eroded.
Hydro• Erodibility
logic
group
B Moderate 2---
Limitations fo.r
conversion
from brush to
grass
Slight. Y
CbB Carlsbad gravelly-loamy sand, 2 to s·percent slopes------C Severe 2-----Slight.
GbC. . IG_cµ-lsb_a;i;l fil:'.JI.V~i~Y .. ),P.~Y ~i:pid, 5 _:to. 9~cent slo:ees------C Severe 2-----Slight . .. · ... ~·ebb · .. tcarlsbaci''g:raveYff foamy ·san~i'~9"9to.""Is ·pexcentsiopes-::·:::·:"~" --~·-·=cy ·-----:s-evenr·'2::-.:-:-:-::--.. -----srrgn·=t-. --
1 'CbE Carlsbad gravelly loamy sand, 15 to 30 percent slopes----C Severe 2-----Slight.
CcC Carlsbad-Urban land complex, 2 to 9 p~rcent slopes-------D
CcE Carlsbad-Urban land ~omplex, 9 to 30 percent slopes------D
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CeC Carri-zo very gravelly sand, 0 to 9 percent slopes--------A
CfB Chesterton fine .sandy loam, 2 to 5 percent slopes--------D
CfC Chesterton fine sandy loam, 5 to 9 percent slopes--------D
CfD2 Chesterton fine sandy loam, 9 to 15 percent ·slopes, D
eroded.
CgC Chesterton-Urban land complex, 2 t9 9 percent slopes:
ChA
ChB
CkA
ClD2
ClE2
C1G2
CmE2
CmrG
CnE2
CnG2
co. tr
CsB
CsC
CsD
CtE
CtF
CuE
CuG
CvG
D;iC
DaD
DaE
DaE4
Da.F
Chesterton-----------------------.------------------
Urban-land------------------.--------------.. --.----
Chino fine sandy loam, 0 to 2 percent slopes-------------
Chino-fine-sanoy-loam, 2-to 5.percent slopes--~----------
Chino silt loam, saline, o to 2 percent slopes-----------
Cieneba coa:rse· sandy loam, 5 to 15 percent slopes,
eroded.
Cieneba coarse sandy loam, 15 to 30 percent slopes,
eroded.
tieneba coarse sandy loam, 30 to 65 percen~ slopes,
eroded.
Cieneba rocky coa:rse sandy loam, 9 to 30 percent
slopes, eroded.
Cieneba very rpcky coarse sandy loalll, 30 to 75 percent
slopes.
Cieneba-Fallbrook rocky sandy 16allls, 9 to 30 percent
slopes• eroded:
Cieneba -------------------------·-------------------
Fallbrook------------------------------------------Cieneba-Fallbrook rocky sandy loams, 30 to 65 percent
slopes, eroded:
. Cieneba----------------------------------------------
Fallbrook-----------------------------------· --------
_payey. alluvial land--------------------------------------
·toastal beaches-----------------------------------------
~o:tralitos loamy sand, 0 to 5 percent slopes-------------
~orralitos loamy sand, 5 to 9 perce~t slopes-------------
~orralitos loamy sand, 9 to 15 percent slopes------------
~rouch coarse s~dy loam, 5 to 30 percent slopes---------
Crouch coarse sandy loam, 30 to 50 percent slopes--------
Crouch rocky coarse sandy loam, 5 to '30 percent
slopes.
!Crouch rocky coarse sandy loam, 30 to 70 percent
slopes.
Crouch stony fine sandy loam, 30 to 75 percent
slopes.
Diabio clay, 2 to 9 percent slopes-----------------------
lDiablo clay, 9 to 15 percent slopes--.-------------------.,.
Diablo clay, 15 to 30 percent slopes---------------------
Diablo clay, 15 to 30 percent slopes, eroded-------------
·IDiablo clay, 30 to 50 percent slopes---------------------
See footnotes at end of table.
D
D
C
C
C
B
B
B
B
B
B
C
B
C
D
A
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WATER QUALITY CALCULATION
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1 ATTACHMENT ''B''
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STEEL PARKWAY GRATE
GROUT AROUND ALL
PIPE OPENINGS FD""-~
'v/A TER TIGHT JOINTS
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FOUNDATION TO BE
INSTALLED ON NATIVE
MATERIAL OF FILL--
COMPACTED AT 95¾
100X FABRIC
. ONE (3L4" TO 1-1/2" OMJNA[ DIAMETER)
PAINT NOTE1 ALL STEEL COVERS SHALL BE CLEANED, PRIMED
ANil PAINTED BLACK 'w'ITH URETHANE PAINT PER
SECTION 310-2 OF THE ST Af'JDARD SPECIFICATIONS FOR
-PUBLIC 'w'DRKS CDNSTRUC:VION,.
@_)CATCH BASIN WITH FILTRATION MEDIA
2 . · ND SCALE
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ATTACHMENT "C"
rNP--D-E __ S ___ P-ernu-.""':"'.t ... ":-L-:-it-e-=-11 -=fo""r-th-:--e-:N-:o-n---=T=--e-c:-hni--:-_c-a:-l =R-e-ad7e_r ______________________ -.rag~ l Ul ,!,
: . NPIES PER . II fl LITE"
: .-OR . THE 'NON~TEC:HNICAL l READER
1anks to the Santa Monica Restoration Bay Project, the
I .. -Jational Pollutant Discharge Elimination Systems document
was translated into .ea.sy to understand .language.
I ABOUT URBAN AND STORM WATER RUNOFF •.•
Urban and storm water runoff is-a serious concern, in both dry and rainy
I season. ltis contaminated with pesticides, fertilizers, animal droppings,
trash, food wastes, automotive byproducts and other toxic substances
that are part of our urban environment. Waters that flow over streets,
parking lots, construction sites and industrial facilities carry these-
I pollutants through a 5,000-mile .storm drain network directly to the lakes,
-streams and beaches of Southern California. .
I Urban runoff is the larg_est source bf unregulated pollution to the .
-waterways_and_coastaLar.eas of the United~S~t~a~te'.::'.'.s~. -:=:Lo:ic::a::lly~~·:iw:::.er::-s:::e7eCTt::-h1~e _____________ _
impacts in increased health risks to swimmers near storm drains, high
I concentrations of toxlc metals in harbor and ocean sediments, .and.
toxicity to aquatic life.
These Impacts translate into losses to the ·County's $2 billion a year
I tourism economy, loss of recreational resource, dramatic cost increases
for cleaning up contaminated sediments and impaired function and
vitality of our natural resources.
I
HISTORY I The Clean Water Act of 1987 established requirements for storm water
discharges undet the National Pollutant Discharge Elimination System I NPDES) program: In response to those requirements, the State of
California issued a five~year permit for municipal storm w~ter discharges
to Los Angeles County in June 1990.
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The 1990 permit was very general in nature, resulting in storm water
programs that varied widely from city to city. The 1996 permit, a
reissuance of the 1990 permit, therefore seeks to provide better direction
by specifying actions needed to comply with. permit requirements.
This permit is the result of one and a half years of discussions between
representatives of the Los Angeles Regional Water Quality Control
Board (Regional Board), Los Angeles County, the City of Los Angeles,
three smaller cities, and the environmental community. It also
incorporates extensive comments received from all interested parties on
two earlier drafts.
GOALS OF THE MUNICIPAL STORM-WATER PERMIT
• To a'ttain and protect the beneficial uses of water bodies in Los
Angeles County;
• To reduce pollutants in stormwater to the maximum extent
practicable; and
I http://wwwJastormwater.org/pages/npdeslit.htm 5/13/0
NPDES Permit "Lite11 for the No:o.-Tecbnical Reader
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• To evaluate compliance with the objectives and requirements
contained in the permit.
I. REQUIREMENTS OF THE.STORM WATER MANAGEMENT
· PROGRAM
I In general, the permit requires implementation of both the Storm Water
Management Program contained in the permit,. the elements of the
Countywide Stormwater Management Plan (CSWMP) or Watershed
Management Area Plans (WMAP) that will be developed pursuant to the I permit
I The Countywide-Storm Water Management Plan
and Water Management Area Plans
-1··-Much-of-the·permit-details-the·Storm-Water-MaF1agement-P-r0§Jrain~·~. ----
elements and "what'' should be induded in the CSWMP. Developing the
I si:ieciffed program elemetits·wm ·reql.iire tnat Permitteeli determine·"how" ·
. actions will be implemented. Program elements, once developed, will
then be compiled into the unified implementation plan ·known as the
CSWMP.
I The Watershed Management Area Plans are to be devdoped later in the
permit cycle. They are based on the requirements of the permit and the
I. CSWMP, but will also indude actions that address water quality problems
ind concerns that are unique to the six watershed areas of Los Angeles
~ounty,. Once developed and approved, the WMAP superceded the
CSWMP.
I The storm water management program is comprised of seven elements,
the objectives of which are to:
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1. Effecti\lely manage and coordinate implementation of the storm
water program;
2. Identify and ·eliminate-illicit conn~tions and .illicit.discharges to-the ·
storm drairi system; · · · ·
3. Reduce storm water impacts associated with development and
redevelopment projects;
4. Reduce storm water quality impacts associated with public agency
activities;
5. Increase public knowledge about the impacts of storm water
pollution and about actions that can be taken to prevent pollution.
6. Increase knowledge and, understanding .about the quality,
quantity, sources, and impacts of urban runoff; and
7. Evaluate the effectiveness of implementing storm water
management programs.
I http://www.lastormwater.org/pages/npdeslit.htm
Page2 of2
5/13/0:
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A TT A CHMENT "D''
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GENERAL CATAGORIES FOR WATER POLLUTION
Urban runoff from a developed site has the potential to contribute pollutants, including oil and
grease,. suspended solids, metals, gasoline,. pesticides, and pathogens to the storm water
conveyance.system and receiving waters. For the purposes of identifying pollutants of concern
· and associated storm water HMPs, pollutants are grouped in nine general categories as. follows:
1. Sediments -Sediments are soils or other surficial ~terials eroded and then
transported or deposited by the action of wind, water, ice, or gravity. Sediments can increase
turbidity, clog fish gills, reduce spawning habitl;lt, lower young aquatic organisms survival rates,
smother bottom dwelling organisms, and suppress aquatic vegetation growth.
2. Nutrients-Nutrients are inorganic substances, such as nitrogen and phosphorus. They
I commonly exist in the form of mineral salts that are either dissolved or suspended in water.
----__ ·. _:erimar:y._smrr.ces_oinutrients in urban runoff are fertilizers and eroded soils. Excessive discharge
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of nutrients to water bodies and streams can cause excessive aquatic algae and plant growth. Such
excessive pro.duction, referred to as"cultural eutrophication, may lead to·excessive decay of
organic matter in the water body, loss of oxygen in~ water, release of toxins in sediment, and
the eventual death of aquatic organisms.
3. Metals -Metals are raw material components in non-metal products such as fuels, adhesives,
paints, and other coatings. Primary source of metal pollution in storm water are typically
commercially available metals and metal products.
Metals of concern include cadmium, chromium, copper, lead, mercury, and zinc. Lead and
chromium have been used as corrosion inlnbitors m,. prim.er coatings and cooling tower systems.
At low concentrations naturally occurring in soR metals are not toxic. However, at higher
concentrations, certain metals can be toxic to aquaticlife. Humans can be impacted from
contaminated groundwater resources, and bioaccumulation of metals in fish and shellfish.
Environmental concerns, regarc:lipg the potential for release of metals to the environment, have
already led to restricted m.etal· usage· in certain applicatio·ns. ·, ·
4. Organic Compounds -Organic compounds are carbon-based. Commercially available or
naturally occl,ll'ring organic compounds are found in pesticides, solvents, and hydrocarbons.
Organic compounds can, at certain concentrations, indirectly or directly constitute a hazard to life
or health. When rinsing off objects~ toxic levels of solvents and cleaning compounds can be
discharged to storm drains. Dirt, grease, and grime retained in the cleaning fluid or rinse water
may also adsorb levels of organic compounds that are harmful or hazardous to aquatic life.
5. Trash & Debris -Trash (such as paper, plastic, polystyrene pacldng foam, and aluminum
materials) and biodegradable organic matter (such as leaves, grass cuttings, and food waste) are
general waste products on the landscape. The presence of trash & debris may have a significant
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impact on the recreational value of a water body and aquatic habitat Excess organic matter can
create !;I. high biochemieal oxygen demand in a stream and thereby lower its water quality. Mso,Jn
areas where stagnant water exists, the presence of excess organic matter can promote septic
conditions resulting in the growth of undesirable organisms and the release of odorous and
hazardous compounds such as hydrogen sulfide._
6 .. 0xygen-Demanding Substances -This categ9ry includes biodegradable organic material as
well as chemicals that react with dissolved oxygen in.water to form other compounds. Proteins,.
carbohydrates, and fats are exa.mples-ofbiodegradable organic compounds. Compounds.such as
ammonia and hydrogen sulfide are examples of oxygen-demanding compounds. The oxygen
demand of a substance can lead to .depletion of dtssolved oxygen in a water body and _possibly tlie
development of septic conditions.
7. Oil and Grease -Oil and grease are characterized as high-molecular weight organic
compounds. Primary sources of oil and grease are petroleum hydrocarbon products, motor
------------~Pro.ducts_ftomJ~~g vehicles, esters, oils, fl;l:tS, waxes, and highmolecular-weight fattyacids.
Introduction of these pollutants to the water bodies are very possible due to tlie wiae uses and------------------
applications of some ofthese·products in municipal, residential, commercial, industrial, and
construction areas. Elevated oil and grease content can decrease the aesthetic value of the water
body, as well as the water quality.
8. Bacteria and Viruses -Bacteria and viruses are ubiquitous microorganisms that thrive under
certain environmental conditions. Their proliferation is typically caused by the transport .of animal
or human fecal wastes .from the watershed. Water, con.taming excessive bacteria and viruses can
alter the aquatic habitat and create a harmful environment for humans-and aquatic life. Also, the
d~omposition of excess organic-waste causes increased growth of undesirable organisms in the
water.
9. Pesticides -Pesticides (including herbicides) are chemical compounds commonly used to
control nuisance growth or prevalence of organisms. Excessive application of a·pesticide may
re.Sult in runoff containing toxic:Je:v:els of its active.component.
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ATTACHMENT "E"
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Nonpoint Source Pollution: The Nation'sLargest Water Quality Problem Page 1 ot J
Pointer No. 1
EPA841-F-96-004A
Nonpoint SourceP-ollution: The Nation's Largest Water Quality
Problem
. .:_ The United States has made tremendous advances in the past 25 years
'··t: .... · • to clean up the aquatic environment by controlling pollution from
.!o._ · ·--~ :industries and sewage treatment plants. Unfortunately, we did not do
··~ .. enough to control pollution from diffuse, or nonpoint, sources. Today,
I _ ... _.: .... :_,,,: ,._ :· ·.,. ____ .... -:-···· .nonpoint s?urce (NPS) pollution r~mains the Nation's-~gest source of
. ___________ : ~--~_::,, __ · .. ,_ .-_. ; · ,_ :_.-. __ .. __ ;,_water quality problems. It1s the mrun reason that approximately 40
---.·-... :·: ·_·, -··. '. i:::,_-: .,.,,_· _ ·: · .-·\ .. ·:._ percent of our surveyedrivers,-lakes, and--estuanes are not clean ______ _
-._:r!:tre~ !-e~~!rig S~ui:c~~ of--enough to meet basic uses such as fishing or swimming. I . ~er Qµ~-1~~ Imp~:~:~~~-:
· Rack Rivers Lake~-· · Estuaries _NPS pollution occurs when rainfall, snowmelt, or irrigation runs over
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land or through the ground, picks up pollutants, and deposits them into
1 . Agr;eu11uno AQria.J11uno Urban runoff rivers, lakes, and coastal waters or introduces them into ground water.
· Imagine the path taken by a drop of rain fr.om the time it bits the M.micipsl Mmicipal Munioipal • • 2 point point point ground to when rt reaches a nver, ground water, or the ocean. Any aouroaa , . a:u.1roea aouroea ~ · pollutant it picks up on its journey can become part of the NPS
Sireaml · · · • •
habiiat urbs, runoff Agr;0u11ure problem. NPS pollut10n also mcludes adverse changes to the .3
aiang&a vegetation, shape, and flow of streams and other aquatic systems.
Sew: Wrter lillti~I Q.Jaltyl~!Ji lpPA-
: •:. . ··:, ... _,:: ~··
NPS pollution is widespread because it can occur any time activities
. -: , _-·· =':.:-c disturb the land or water. Agriculture, forestry, grazing, septic systems,
i--------------1 recreational boating, urban runoff, construction, physical changes to
NPS pollution .occurs.\l'Alen strea:n:i channels, and habftat degradation are potential sources ofNPS
w~t-er runs over land or through . ·pollution. Careless or uninformed-household~gement·also
the ground, picks up pollutants, contributes to NPS pollution problems~
and deposits them in surface
waters or introduces them into
groundwater The latest National Water Quality Inventory indicates that agriculture
is the leading contributor to water quality impairments, degrading 60
percent ofthe impaired river miles and half of the impaired lake acreage
surveyed by states, territories, and tribes. Runoff from urban areas is the largest source of water quality
impairments to surveyed estuaries (areas near the coast where seawater mixes with freshwater).
The most common NPS pollutants are sediment and nutrients. These wash into water bodies from
agricultural land, small and medium-sized animal feeding operations, construction sites, and other areas
of disturbance. Other common NPS pollutants include pesticides, pathogens (bacteria and viruses),
salts, oil, grease, toxic chemicals, and heavy metals. Beach closures, destroyed habitat, unsafe drinking
water, fish kills, and many other severe environmental and human health problems result from NPS
pollutants. The pollutants also ruin the beauty of healthy, clean water habitats. Each year the United
States spends millions of dollars to restore and protect the areas damaged by NPS pollutants.
http://www.epa:.gov/OWOW/NPS/facts/pointl.htm 9/27/01
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Nonpoint .Source Pollution: The Nation's Largest Water Quality Problem Page 2 of3
Progress
During the last 10 years, our-country has made significant headway in addressing NPS pollution. At tlie
federal levei recent NPS control programs--include the Nonpoint Source Management Program
established by the 1987 Clean Water Act Amendments, and the Coastal Nonpomt Pollution Program
established by the 1990 Coastal Zone Act Reauthorization Amendments. Other recent federal
programs, as well as state, territori~ tribal and local programs also tackle NPS problems.
In addition, public and private groups have developed and used pollution prevention and pollution_
reduction initiatives and NPS pollution controls, known as management measures, to clean up our
w~ter efficiently. Water quality mopitor-ing and environmental education activities supported-by
government agencies, tribes, industry, volunteer groups, and schools have provided information about
NPS p~llu~ion an,d have helped to detennine the effectiveness of management techniques.
·1 Also, use of the watershed approach has helped· communities address water quality problems caused by
· ·· -· -·-· ---·-···NP-S-pollution.--The-watershed-appr-oach--looks at--not-only a-water.body-butalso .. the_entire_areaJbat ___ _
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drains into it. This allows communities to focus resources on a watersheds most serious environmental
problems--wbich, in many instances, are caused by NPS pollution.
Just as important, more citizens are practicing water conservation and participating in stream walks,
beach cleanups, and other environmental activities sponsored by community-based organizations. By
helping out in such efforts, citizens address the Nation's largest water quality problem, and ensure that
even more of our rivers, lakes, and coastal waters become safe for swirnnung, fishing, drinking, and
aqua.tic life.
RELATED PUBLICATIONS
Additional fact sheets in the Nonpoint Pointers series (EP.A-841-F-96-004)
Watershed Approach Framework (EP A840-S-96-001) --. . -
-EPAJo.~ VoL 17,.No. 5, Nov/Dec 199J; (EPA-2;2K .. 1005) . . ' ' . .
Managing Nonpoint Source Pollution; Final Report to Congress on Section 319 of the Clean Water
Act (EP A-506/9-:90)
NPS News-Notes (EPA-841-N-92-003)
Polluted (EP A-841-F-94--005)
The Quality of Our Nation's Water: 1994 (EPA-841-S-95-004)
· The Watershed Protection Approach (EPA-503/9-92/002)
To order any of the above EPA documents call or fax the National Service Center for Environmental
Publications.
Tel (513) 489-8190
http://www.epa.gov/OWOW/NPS/facts/pointl .htm 9/27/01
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Nonpoint Source Pollution: The Nation's Largest Water Quality Problem
Fax (513) 489-8695
FOR MORE INFORMATION
U.S. Environmental Protection Agency
Nonpoint Source Control Branch
Washington DC 20460.
Office of Wetlands, Oceans & Watersheds Home I Watershed Protection Home
Page 3 of3
1----· _E_P_A_H_o_m_e_l_O:ffi_ce_o_fW-:--at---:-er_l_S-:-ear_ch~I_C_omm __ en_ts_l_C~o-nta_cts~---------------------
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Revised: 04/10/2001 07: 12·:o 1
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Opportunities for Publis Involvement -in Nonpoint Source Control
Pointer No. 2
EPA841-F-96-004B
.Page 1 or J
1-----------
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Did you know
that volunt.eets
often collect
information on the
health of.water-
ways and .the
extent of NPS
pollqtion?
-Local groups organize volunteers of all skill levels to gather water
-quality data This information can help government agencies understand
the magnitude ofNPS pollution. More than 500 active volunteer
monitoring .groups currently operate throughout the United States.
Monitoring groups may also have information about other NPS
pollution projects, such as beach cleanups, stream walks, and
restoration activities.
_Ecological Restoration
_ Ecological restoration provides opportunities for the public to help out
with a wide v~ety of projects, such as tree planting and bank
stabiliza,tion in both urban and rural areas. Restoration efforts focus on
degraded waters or habitats that have significant economic or ecological
value.
Educational Activities ----------
NPS pollution occurs when
water runs over land or through
the ground, picks up pollutants,
and deposits them in surface
waters or introduces them into
groundwater.
Water Conservation
Teachers can integrate NPS po-llution curricula into their classroom
activities. The U.S. Environmental Protection Agency (EPA), federal
and state agencies, private groups, and nonprofit organizations offer
_ teachers a wide variety of materials. Students can start on an NPS
control project in the primary grades and carry their work through to
the intermediate and secondary levels.
Using technologies that limit water use in the bathroom, kitchen, laundry room, lawn, driveway, and
garden can reduce the demand on existing water supplies and limit the amount of water runoff. More
than 40 states now have some type of water conservation program to help citizens and businesses
implement conservation practices. Government agencies, utilities, and hardware stores have
information about different products that help households conserve water.
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Opportunities for Public Involyement_in Nonpoint Source Control Page Lor J
Household Management
Learning to limit NPS pollution at the household level can reduce the overall impacts ofNPS pollution
on water quality. Households, for example, can irrigate during cooler hours of the day, limit fertilizer
applications to lawns and gardens, and properly store chemicals to reduce runoff and keep runoff clean.
Chemicals and oil should not be pour-ed into sewers, where they can result in major water quality
problems. Pet wastes, a significant source of nutrient ·contamination, should be disposed of-properly.
Households can also replace impervious. surfaces with more porous materials.
Public.Meetings and Hearings
Decisions made during public hearings on stormwater permitting and town planning can determine a
coinmunity's capability to manage NPS pollution over t];ie lop.g term. Laws or regulations may require
federal, state, or local agencies-to hold public hearings when permits &re issued or when town plans are I ______ n_orm~ed. Notices· about hearings often appear in the newspaper or in government office buildings.
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Community Organizations
Many communities have formed groups to protect local natural resources. These community-based
groups provide citiz.ens with information about upcoming environmental events in their watershed,
such as ecological restoration, volunteer monitoring, and public meetings. Watershed-level associations
are particularly effective at addressing a wide range ofNPS pollution problems.
Environmental Information on the Internet
Citizens can obtain a tremendous a.tQ.ount of env.iro:qmental data and educational material with a
computer linlced to the World Wide Web. EPA's site (http://www.epa.gov) on the World Wide Web
provides up-to-date information on Agency activities-and enables citizens to find out about air and
water quality data in specific communities.
EPA supports NPSINFO, a forum for discussion ofNPS issues, including NPS education. Citizens
with access to e-mail can subscribe to NPSINFO free of charge_by sendU1-g_an e-mail message to:
listsenrer@unixmail.rtpnc.epa.gov
and includ.e in:the body of the message:
subscribe NPSINFO (your first name) (your last name)
Other federal, state, tribal, and local agencies, as well as businesses and nonprofit groups, also provide
env.iro:omental information on the World Wide Web.
RELATED PUBLICATIONS
Additional fact sheets in the Nonpoint Pointers series (EPA-841-F-96-004)
Clean Water in Your Watershed, Terrene Institute, Washington, DC, 1993
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Opportunities for Public Involvement in Nonpoint Source. Control :Page 3 ot 3
Cleaner Water Tlrremgh Conservation (EP A-84 l-B-95-002)
Compendium of Educational Materials on the Water Environment, Alliance for Environmental Ed.,
Inc., Marshall,. VA, 1992
EPA Journal, Vol. 17, No. 5, Nov/Dec 19~H, (EPA-22k-1005)
Environmental Resource Guide, Nonpoint Source Pollution Prevention, Air & Waste Management
Assoc., Pittsburgh, PA
Handle With Care, Terrene Institute, Washington, DC, 1991
National Directory of Volunteer Environmental Monitoring Programs (EP A-841-B-94-001) . . --
The Quality of Our Nation's Water: 1994 (BPA-841-S-95-004)
Xeriscape Landscaping (EPA-840-B-93-001)
To order any of the above.EPA documents, call or fax the National Center for Environmental
Publications and Information.
Tel (513) 489-8190
Fax(513) 489-8695
FOR MORE INFORMATON
U.S. Environmental Protection Agency
Nonpoint Source Control Branch
Wa:srnngt01i DC 20460
Office of Wetlands. Oceans & Watersheds Home I Watershed Protection Home
EPA Home I Office of Water I Search I Comments I Contacts . -
Revised January 21, 1997
I URL: http://www.epa.gov/OWOW/NPS/facts/point2.htm:l
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The Nonpoint Smm~e Management Program
Pointer No. 4-_.
EPA841-F-96-004D
The Nonpoint Soun~e Management Program
Page I of3
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States, territories, and tribes estimate that. at least half of these
impairments, as well as significant ground water contamination, are
caused by nonpoiht source (NPS) pollution, making it the Nation's
leadin · source of water-quality problems. To address these problems,
Congress amended the Clean Water Act in 1987. Congress estalills-..-he-a..------
the NPS Pollution Management Program under section 319 of the
amendments. The program provides states, territories, and tribes with
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Did you know
that at least50%
of water quality
problems In the
l.).S. result from
NPS pollution?
grants to implement NPS pollution controls described in approved NPS
pollution management programs.
In 1990, the U.S. Environmental Protection Agency (EPA) began
awarding grants to states, territories, and tribes with approved
programs. By 1991, all 50 states and the territories had.received EPA
approval; by 1995,_7 tribes also had received approval. Since 1990,
recipients of319 grants have directed approximately 40 per-cent of
.-awarded funds toward controlling NPS pollution from agricultural
lands. In addition, neatly one-quarter of the money was used for general
· assistance purposes, including funding for outreach and technical
ass4,tance. Efforts to control nm.off from urban sources, septic systems,
..,_ ___________ ....,c and construction also received significant funding under section 319, as
NPS pollution oCCL!rswhen _ did projects to manage-wetlands and NPS pollution fro:i:n forestry,
waterruns over land or through habitat degradation, and changes to ·stream channels. .
the-ground, picks up pollutants,_
and deposits them in surface
waters or introdu·ces them into
groundwater.
In 1991, EPA established. the National Monitoring Program to evaluate
the effectiveness ofNPS pollution control.projects. Fourteen state-
proposed projects will be evaluated over a 6-to 10-year period. The
findings from this effort will help states, territories, and tribes develop
more successful NPS pollution controls in other watersheds.
~ As of 1995, EPA had awarded states, territories, and tnbes $370 million under section 319 to
implement NPS pollution control Section 319 Success Stories provides examples of how states,
territories, and tribes chose to use section 319 funds.
How Section 319 Works
Assessment Reports
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The Nonpoint Source Management PrQgram rag1:; L, u1. .J
All states, territories, and some tribes have mettw.u =basfc requirements to be eligible for a section 319
grant, the first of which is to develop and gaih EPA approval of a NPS po-llution assessment report. In
the -assessment report, the state, territory, or tribe identifies waters im_pacted or threatened by-NPS
_pollution. The state, territory,. or tribe also describes the categories ofNPS pollution, such as
agriculture, urban runoff, or forestry, that are causing water quality.
Management Programs
To meet the second requirement a state, territory, or tnbe must develop and-obtain EPA approval of a
NPS pollution manag¢ment program. This program becomes. the framework for controlling NPS
pollution, given the existing and potential water quality problems described in the NPS pollution
·assessment report. A well-developed management program supports activities with the greatest
potential to produce early, demonstrable water quality results; assists in the building of long-term
institutional capacity to address NPS pollution problems; and encourages strong inteFagency
cooTdination and ample opportunity for public involvement in the decision-making process.
---------·-------·--------·-----
How to Get Involved
The addresses and telephone numbers of state and territory nonpoint source officials are listed in the
Nonpoint Source Water Quality Contacts Directory. These individuals can inform citizens about
section 319 progrru:n activities in their home state or territory. They can also let citizens know how to
become involved in the periodic updates of section 319 NPS assessments and NPS management
programs.
RELATED PUBLICATIONS
Additional fact sheets in the Nonpoint Pointers series (EPA-841-F-96-004)
Managing Nonpoin,t Source Pollution: Final Report to Congress on Section 319 of the Clean Water
Act (EP A-506/9-90)
Nonpoin~ Source Water-Quality Contacts Directory, Conservation Technology .Information Center,
-West Lafayette, II!-diaria
The OµalityofOurNatfon's Water: 1994 (EPA-841-S.-95-004)
Section 319 National Monitoring Program Proiects (EP A-841-S-94-006) Me@f'.A~
Sectiqn 319 National Monitoring Program: An Ov,erview, Water Quality Group, North Carolina State
University, March 1995
Section 319 Success Stories (EPA-841-S-94-004)
To order any EPA documents call or fax the National Center for Environmental Publications and
Information.
_ Tel (513) 489-8190
http://www.epa.gov/OWOW/NPS/facts/point4.htirt 9/27/01
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The Nonpoint Source Management Program
Fax (513) 489-8695
FOR MORE INFORMATION
U.S. Environmental Protection Agency
Nonpoint Source Control Branch
Washington DC 20460
Office of Wetlands, Oceans. & Watersheds Home I Watershed Protection Home
-rage ., 01-.,
-1----____ E_P_A_H_o_m_e_[_Offi_ce_of_w_a_t_er_[ _se_ar_c_h_l _Co_mm_e_n_ts_l_C~on_ta_c_ts ____________________ _
RevisedJanua,y 21, 1997
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URL: http://www.epa.gov/OWOW /NPSlfacts/point4.html
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Protecting Coastal Waters from Nonpoint Source Pollution Page 1 ot 3
-J;>ointer No. 5_
EPA841-F-96-004E
\ Protecting Coastal Waters fr.om Nonpoint Source PoUution
-~---~ ;:;£~ · =-·:-.. ~ .:;,..~ Coastal waters provide homes for an amazing array of plants and
=:..:;.~,:.;~~-=:_ ~;,J1ii"1 · ·:..?!f animals and are recreational havens for more than 180 million visitors . ~, .:.-\J!H H\ t ¼ ea~h y~ar. Yet, high levels of pollution prevented people from .
. ,. . ;1-: 'i}]r i 11 I \f I swnrnmng safely at coastal beac_hes on more than 12,000 occasions from
· . ,!',: ··'1 • • 1¥ 1 1988 through 1994, and the latest National Water Quality Inventory
" · ~j~; reports that one-third of s~~eyed estuaries ( 8:f~as near the. coast where
,· · f.1\ seawater and freshwater IDl.Xlilg occurs) are damaged. Rapidly .f: !!:;(' increasing population growth and development in coastal regions could
,4/ 1 ~:~ be a source of even more coastal water quality problems in the future.
_, __________ 1 _________ --1-A si~cant portion -of the threats to coastal waters are caused by
nonpoint source pollution (NPS). Major sources in coastal waters
I Did you know include agriculture and urban runoff. Other significant sources include
1 · faulty septic systems, forestry, marinas and recreational boating, that by 20 O, physical changes to stream channels, and habitat degradation, especially
almost one-half of the destruction of wetlands and vegetated areas near streams. I
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· the U.S. popula-
tion will live near
coastal watets in
regions that make
up only 1 O percent
of our country s
land areas?
In 1990, Congress passed the Coastal Zone Act Reauthorization-
Amendments (CZARA) to tackle the nonpoint source pollution problem
in coastal waters. Section 6217 ofCZARA requires the 29 states and
·territories with approved Coastal Zone Management Programs to
,develop Coastal Noa.point Pollution Control Programs. In its program, a
state or territory describes how it will implement nonpoint source
pollution controls, known as management measures, that conform with
those described in Guidance Specifying Management Measures for
1------------1Sources of Nonpoint Pollution in Coastal Waters.
NPS pollution oo~rs when _ _-If these original management measures fail to-produce the necessary water runs over land or through· · : • • · . •
the ground, picks up pollutants, co8$fal water quality nnprovements, a state or territory then must
· and deposits them in surlaoe .implement additional management measures to address remaining water
waters or introduces them into quality problems; Approved programs. will update and expand upon .
9 rou ndwatet. NPS Management Programs developed under section 319 of the Clean ·
Water Act and Coastal Zone Management Programs developed under
section 306 of the Coastal Zone Management Act.
. The coastal non.point program stl;'engthens the links between federal and state/territory coastal zone
management and water quality programs in order to enhance effort~ to manage land management
activities that degrade coastal waters and coastal habitats. State and territorial coastal zone agencies
and water quality agencies have coequal roles, as do the National Oceanic and Atmospheric
Administration (NOAA) and the U.S. Environmental Protection Agency (EPA) at the federal level.
Coastal Nonpoint Pollution Control Programs
In 1995, coastal states and territoriys submitted their coastal nonpoint programs to EPA and NOAA
http://www.epagov/OWOW/NPS/facts/point5.htm 9/27/01
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Protecting Coastal Waters from Nonpoint Source Pollution Page 2 of 3.
for review and approval. States and territories are scheduled to implement the first phase oftheir
approved program by 2004 and, if necessary, the second phase by 2009. Approved programs include-
several key elements; described below.
Boundary. The boundary defines the region where land and water uses-have a significant impact on a
states or territorys coastal waters. It also includes areas where future land uses reasonably can be
expected to impair coastal waters. To define the bounmµ:y, a state or territory may choose a region
suggested by NOAA or may propose its own boundary based on geologic, hydrologic, and other
scientific data.
Management Measures. The state or territory-coastal nonpoint progran:1-describes how a state or
territory plans to control NPS pollution witQ:in the boundary. To help states and territories identify
appropriate technologies and tools, EPA issued Guidance Specifying Management Measures for
Sources of Nonpoint Pollution in Coastal Waters. This technical guidance d~scribes the best available,
economically achievable approayhes used to controlNPS pollution from the major-cate_gories of1and
I management activities that can degra.¢e coastal water quality_ States or territories may elect to
-------------im.plement-alternative-measurement-measures-as-l0ng-as-the-altemative-measures-wi1l-achiev.e_the .. same ____ _
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environmental results as tho.se described in the. guidance.
Enforceable Policies andMechanisms. States and territories need to ensure the implementation of the
management tn.ea.$ures. Mechanisms may include, for example, permit programs, zoning, bad actor
laws, enforceable water quality standards, and general environmental laws and prohibitions. States and
territories may also use voluntary approaches like economic incentives if they are backed by
appropriate regulations.
Final Approval and Conditional Approval
In certain circumstances, NOAA and EPA may grant a program conditional approval for up to 5 years.
Conditional approval provides a state or territory additional time to fully develop its management
program while it begins initial program implementation. Conditional approval would include
benchmarks for progress toward eventual full progr~ development and approval.
RELA'E-ED PUBLICATIONS·
Additional fact sheets in the Nonpoint Pointers series (EP A-841-F-96-004)
Coastal Nonpoint Pollution Control Program: Program Devel9pment and Approval Guidance (EPA-
841-B-93-003)
Global Marine Biological Diversity, Center for Marine Conservation, Island Press, Washington, DC,
1993
Guidance Specifying Management Measures for Sources ofNonpoint Pollution in Coastal Waters
(EP A-840-B-92-002)
The Quality of Our Nation's Water: 1994 (EPA-841-S-95-004)
Testing the Waters V: Politics and Pollution at US Beaches, Natural Resources Defense Council, June
1995
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Protecting Coastal Waters from Nonpoi,nt Source Pollution Page 3 of3
To o:i;der any EPA documents call or fax the National Center for Environmental-Publications and
Information.
Tel (513) 489--8190
Fax (513) 489-8695
FOR MORE INFORMATION
U.S. Environmental Protection Agency
Nonpoint Source Control Branch
Washlngton DC 20460
-1,~----~----'----------,~--
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Office of Wetlands, Oceans & Watersheds Home I Watershed Protection Home
EPA Home I Office of Water I Search I Comments I Contacts
Revised January 21, 1997
URL: http://www.epa.gov/OWOW/NPS/facts/point5.htm1
http://www.epa.gov/OWOW /NPS/facts/pointS.htm 9/27/01
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Managing T:Trban Runoff
Pointer No. 7
EP A841-F-96-004G
Pagel or j
Managing Urban Runoff
The most recent National Water Quality Inventory reports that runoff
:from urban areas is the leading source of impairments to surveyed
To protect swface water and ground water quality, urban development
and household activities .must be guided by plans that limit runoff and
Did Y-_OU know reduce Qollutant loadil:igs. To this end, communities can address urban
-t11aroecause-::· · water .quality·problems·on both·a· local and·watershed-.1evel-and,-· g_arn._e_r---------
of /mpe,v/ous the institutional support to help address urban runoff problems.
sulfaces such as
pavement and
rooftops, a 'typical
city block gen-
erate$ 9 times·
more runoff than
a woodland area
of the same size?
NPS pollution oocurs when
water runs over land or through
the·greund, picks up pQlli.Jtan1si
. and deposits them in surface
waters or introduces them into
groundwater.
How Urban. Areas Affect Runoff
Increased Runoff. The porous and varied terrain of natural landscapes
like forests, wetlands, and grasslands trap rainwater and snowmelt and
allow it to slowly filter into the ground. Runoff tends to reach receiving
waters gradually. In contrast, nonporous urban landscapes like roads,
bridges, parking lots, and buildings don't let runoff slowly percolate into
the ground. Water remains above the surface, accumulates, and runs off
in large amounts.
Cities install storm sewer systems that quickly channel this runoff from
roads and other impervious surfaces. Runoff gathers speed once it enters
the storm sewer system. When it leaves the system and empties into a
stre~ large volumes of quickly flowing runoff erode streambanks,
damage streamside vegetation, and widen stream channels. In turn, this
will result in lower water depths during non-storm periods, higher than
normal water levels durmg wet weather periods, increased sediment
'--------------loads, and higher water temperatures. Native fish and other aquatic life
cannot survive in urban streams severely impacted by urban runoff
Increased Pollutant Loads. Urbanization also increases the variety and amount of pollutants
transported to receiving waters. Sediment :from development and new construction; oil, grease, and
toxic chemicals from auto mo biles;. nutrients and pesticides from turf management and gardening;
vrr,uses and bacteria from failing septic systems; road salts; and heavy metals are examples of pollutants
generated in urban areas. Sediments and solids constitute the largest volume of pollutant loads to
receiving waters in urban areas.
When runoff enters storm drains, it carries many of these pollutants with it. In older cities, this polluted
run<;>ffIB. often released directly into the.water without any treatment. Increased pollutant loads can
harm fish and wildlife populations~ kill native vegetation, foul drinking water supplies, and make
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Managing Urban Runoff Page 'lot:;
recreational areas unsafe.
Point and Nonpoint Distinctions
There are two different types oflaws th.at help control urban runoff: one focusing on urban point
sources and the other focusing on urban nonpoint sources. Urban point source pollution is addressed
by the National Pollution Discharge Elimination System permit program.of the Clean Water Act, which
regulates stormwater discharges. Urban nonpoint source pollution is covered by nonpoint source
management programs developed by states, territories, and tribes under the Clean Water Act. In states
and territories with coastaLzones, programs to protect coastal waters from nonpoint source pollution
also ate required by section 6217 of the Coastal Zone Act Reauthorization Amendments.
Measures to Ma~age-Urban Runoff
Plans for New Development New developments should attempt to maintain the volume of runoff at
I predevelopmen~ levels by ~ing struc~al contro~ and pollution preve:3-tio? strategies. -Pl~ for the
· ·· ··· ·· -~-:::-managementof:J'.lJP.-Qti:-:.Se.4@:~t,::toxies,and-:i;:.tutnents.can-establish-gu.idelines-to..help_achie.Y.e_b.o_th __ _
goals. Management plans ate designed to protect sensitive ecological areas,::miriimizelarid: .. -· ..... I di$turbances, and retain natural drainage and vegetation.
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Plans for Existing Development. Controlling runoff from existing urban areas tends tp be relatively
expensive compared to managing runoff from new developments. However, existing urban areas can
target their urban runoff control projects to make them more economical. Runoff management plans
for existing areas can first identify priority pollutant reduction opportunities~ then protect natural areas
that help control runoff, and finally begin ecological restoration and retrofit activities to clean up
degraded water-bodies. Citizens can help prioritize the clean-up strategies, volunteer to become
involved with restoration efforts, and help protect ecologically valuable areas.
Plans for Onsite Disposal Systems. The control.of nutrient and pathogen loadings to surface waters
can begin with the proper design, installation, and operation of onsite disposal systems (OSDSs). These
septic systems should be situated away from open waters and sensitive resources such as wetlands and
floodplams. They should also be inspected, pumped out, and repaired at regular time intervals.
~Ho.useh0kl-maintenance of septic .. systems-can_play a large role in preventing excessive system
discharges: . . ' . .
Public Education. Schools can conduct education projects that teach students how to prevent
pollution and keep water clean. In addition, educational outreach can target specific enterprises, such
as service stations, that have opportunities to control runoff onsite. Many communities have·
implemented storm drain stenciling progrl:lmS-that discourage people from dumping trash directly into
storm sewer systems.
RELATED PUBLICATIONS
Additional fact sheets in the Nonpoint Pointers. series (BPA-841-F-96-004)
Controlling Nonpoint Source Runoff From Roads, Highways, and Bridges (EP A-841-F-95-008a)
Developing Successful Runoff Control Programs for Urbanized Areas (EPA-841-K-94-003)
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Managing Urban Runoff Page 3 of3
Economic Benefits of Runoff Controls (BP A-S-95-002)
Fundamentals_ofUrban Runoff: Terrene Institute, Washington, DC, 1994
. Guidance Specifying Management Measures for Sources ofNonpoint Pollution in Coastal Waters,
Chapter 4 (BP A-840-B-92-00Z)
Storm Water Fact Sheet (EPA-933-F-94-006)
The Quality of Our Nation's Water: 1994 (EPA-841-S-95-004)
To order any of the above EPA documents call or fax the National Center for Environmental
Publications and Information.
-1-----:-=-~:--:e~=-::.~::::::=.~-=~~=~8::--: .. ~::--:=~=--~=~-o ____ -____ -__ -___ ~_-_-_-__ -_ ----:----------------------.:---_-_____ -____ -____ -___ -__ ---------------------====----------_--_-__ -____ -__ -__ -________ _ Fax (5t{f489-=8-695. ----· -·· · ··
I FOR MORE INFORMATION
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U.S. Environmental Protection Agency
Nonpoint Source Control Branch
Washington DC 20460
Office of Wetlands, Oceans & Watersh~ Home I Watershed Protection Home
EPA Home 'I Office of Water I Search I Comments I Contacts
Revised January 21, 1997
URL: http://www.epa.gov/OWOW /NPS/fucts/poiht7 .html
http:/ /www.epa.gov/OWOW /NPS/facts/point7 .htm 9/27/01
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I~~-:··-~-::..-_.:------~·-·===_ . ===. -__ ._--==:-----:-=-== ... ==_ .. == ____ ='.= __ -· ==_ _==__ __==_ ---_-==_-_ --_==:_ ·---===-. ----:------:--_------==-----_ --____ -___ -__ -__ -____ _
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ATTACHMENT "F"
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RESOURCES AND-REFERENCES
STORMWATER aEST MANAGEMENT PRACTICES
The following are a list of BMPs may be used to minimize the introduction of pollutants
of concern that may result in significant impacts to receiving waters. Other BMPs
approved by the Copermittee as being equally or more effective in. pollutant reduction
than. comparable BMPs identified below are acceptable. See Appendix B: Suggested
Resources for additional· sources of information. All BMPs must comply with local
zoning. and building codes and other applicable regulations.
1--· ··-------s·"..;-o · BMD -----·· --· -------·--1~ es1gn= _ -=.s:=======~==~==============================·:::=-=-=-=-=-=-=-=-=-=-==--=---
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Minimizing Impervious Areas
• Reduce sidewalk widths
• Incorporate landscaped buffer areas between sidewalks and streets.
• Design residential streets for the minimum required pavement widths
-• Minimize the number of residential street cul-de-sacs and incorporate
landscaped areas to reduce their impervious cover.
• Use open space development that incorporates smaller lot sizes
• Increase building density whUe decreasing the building footprint
• Reduce overall lot imperviousness by promoting alternative driveway
surfaces and shared driveways that connect ·two-or more homes together
• · Reduce overall imperviousness associated with parking lots by providing
compact car spaces, minimizing stall dimensions, incorporating efficient
parking lanes, and using pervious materials in spillover parking areas
lo.crease-RainfaU Infiltration
• Us~ permeable materials for private· sidewalks, driv.~ways, parking· lots; and
interior roadway surfaces (examples: hybrid lots, parking groves, permeable
overflow parking, etc.) · ·
• Direct rooftop runoff to pervious areas such as yards, open channels, or
vegetated areas, and avoid routing. rooftop r.unoff to the roadway or the urban
runoff conveyance system
Maximize Rainfall Interception
• Maximizing canopy interception and water conservation by preserving
existing native trees and shrubs, and planting additional native or drought
tolerant trees and large shrubs.
Minimize Directly Connected Impervious Areas (DCIAs)
FINAL MODEL SUSMJ>
Jointly Developed by
San Diego Co-Permittees 2/14/02
Page 36 of 41
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• Draining ·rooftops into adjacent landscaping prior to discharging to the storm
drain
• Draining parking lots into landscape areas ~a-designed as biofiltration areas
• Draining roads, sidewalks, and impervious trails into adjacent landscaping
I Slope and Channel Protection.
• Use of natural drainage systems to the maximum extent practicable
• Stabilized permanent ·channel crossings I .. Planting native or drought toler~nt vegetation on slopes
• Energy dissipaters, such as riprap, at the outlets of new storm drains,
culverts, conduits, or channels that enter unlined channels I Maximize Rainfall Interception
• Cisterns I • Foundation planting ---··--·-------===--------------:----.-:~:-:--:==-------======-===-:__-=-=-=--=-=-=--------·--··----------·-··---·-· ·--Increase Rainfall Infiltration-· I • Dry wells
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Source Contro·I BMPs
• Storm drain system stenciling and signage
• Outdoor material and trash storage area designed to reduce or control
rainfall runoff
• Efficient irrigation system
Treatment Control BMPs
Biofilters
• Grass swale
• Grass strip
• Wetland vegetation swale
• Bioretention
Detention S-asins.
• Extended/dry detention basin with grass lining
• Extended/dry detention basin with impervious lining
Infiltration Basins
• Infiltration basin
• Infiltration trench
• Porous asphalt
• Porous concrete
· • Porous modular concrete block
Page 37 of41
San Diego Co-Pennittees 2/14/02
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Wet Ponds and Wetlands
• Wet pond (permanent_pool)
• Constructed wetland·
Drainage Inserts
• Oil/Water separator
• Catch basin insert
• Storm drain inserts
• Catch basin screens
Filtr.ation Systems
· ~ Media filtration
• Sand filtration
I ....... -----·-·-·--·--Hydrodyn~mic Separation Systems ----·------•-SW~fl:::Co11wntrato._:r.__:-_-_-....:...7· ==·===============----• Cyclone SepEirator ------
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FINAL MODEL SUSMP
Jointly Developed by
San Diego Co-Permittee~ 2/14/02
Page 38of 41
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·'·· .. -····--__ ·-.-·=
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APPENDIXB
SUGGESTED RESOURCES. HOW TO -GET A COPY
Better Site Design: A Handbook for Changing ·Center for Watershed-Protection
Development Rules in Your Community (1998) 8391 Main Street
Ellicott City, MD 21043
Presents guidance for different model devetopment 410-461-8323
alternatives. · · www.cwp.org
California Urban runoff Best Management · Los Angeles County Department of Public Works
· Practices Handbooks..(1993) for Construction Cashiers Office
Activity, Municipal, and Industrial/Commercial 900 S. Fremont Avenue
-Alhambra, CA 91803
Presents a description of a large variety of 626-458-6959
· Structural BMPs, Treatment Control, BMPs.and
Source.·Control BMPs
Ca/trans Urban runoff Quality Handbook: Planning California Department of Transportation
and Design Staff Guide (Best Management P.O~ Box 942874
:·. -.--Prasflces Handb6oks~(1998) /:"-------~ ~--Sacramento,.CA.9427-4.::000_1 ___ -··-___ -9f6=6S3:2975-· _______ ..:·.=-..-: =:-..:·.-.::-:...=~-.:
Pres.ants ciuidance for desian of urban runoffBMPs
Design Manual for Use of Bioratention in Prince George's County
Stormwater Management (1993) Watershed Protection Branch
9400 Peppercorn Place, Suite 600
Presents guidance for designing bioretention Landover, MD 20785
facilities.
Design of Stormwater Fl7tering Systems { 1996) by C.enter for Watershed Protection
Richard A. Claytor and Thomas R. Schuler 8391 Main Street
Ellicott City, MD 21043
Presents detailed engineering guidance on ten 410-46:1-8323
different urba11 runoff-filterina systems.
Development Planning for Stonnwater Los Angeles County
, Management, A Manual for the Standard Urban Department of Public Works
Stormwater Mitigation Plan (SUSMP), (May 2000) http://dpw.co.la.ca.us/epd/ or
htto://www.888cleanLA.com
Florida Development Manual: A Guide to Sound Florida Department of the Environment 2600
Land and Water Management(1988) Blairstone Road, Mail Station 3570·
Tallahassee, FL 32399
Presents detailed guidance for designing BMPs .890-921a.9472
Guidance Specifying Management Measures for . National Technical Information Service U.S.
Sources of Nonpoint Pollution in Coastal Waters Department of Commerce
(1993) Report No. EPA-840-,B-92-002. Springfield, VA 22161
800-553-6847
Provides an overview of, planning and. design
considerations, programmatic and regulatory
aspects, maintenance considerations, and costs.
Guide for BMP Selection in Urban Developed ASCE Envir. and Water Re.s. Inst.
Areas (2001) 1801 Alexander Bell Dr.
Reston, VA 20191-4400
(800) 548-2723
FINAL MODEL SUSMP
Jointly Developed l?y Page 39 of 41
San Diego Co-Permittees 2/14/02
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SUGGESTED RESOURCES
Low-Impact Development Design Strategies -
· An Integrated Design Approach (June 1999}
MaryfanifStormwater Design Manual (1999)
Presents guidance for designing urban runoff
BMPs
-National Stormwater Best Management Practices
(BMP) Database, Version 1.0
Provides data on performance and evaluation of
HOW TO GET A COPY
Prince George's County, Maryland
Department of Environmental Resource
Programs and Planning Division
9400 Peppercorn Place
Largo, -Maryland 2077 4
http://www.co.pg.md.us/Govemment/DERIPPD!pg
countvllidmain.htm
Maryland Department of the Environment
2500 Broening Highway
Baltimore, MD 21224
410-631-3000
American Society 6f Civil Engineers
1801" Alexander Bell Drive
Reston, VA 20191 --
703-296-6000
I urban runoff BMPs
· · · -----------· --National..Stormwater_Best.Management Practices Urban Water Resources-Research Council of ----------Data6ase (20o-1)-· -------------1-ASGE--------.=--:·-_-::..·--=:.:·----··-··:.:.:.:::-...::..--::--_::-_--·::..::.::.::..~=..:----------------·----
1 -~g~ri::~ro~ngineers, Inc. -------------
Operation, Maintenance and Management of Watershed Management Institute, Inc.
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Stormwater Management (1997} 410 White Oak Drive
Provides a thorough look at stonn water practices
including, -planning. and design considerations,
programmatic and regulatory aspects,
mai_ntenance considerations, and costs.
-Potential Groundwater Contamination from
Intentional and Non-Intentional stormwater
lhfiftration-
Preliminary Data Summary of Urban runoff Best
Management Practices (August 1999)
EPA-821-R-99-012
-Reference Guide for Stormwater Best
Management Practices (July 2000}
Second Nature: Adapting LA 's· Landscape for
Sustainable Uving (1999) by Tree People
Detailed discuss1on of BMP designs presented to
conserve water, improve water quality, and
achieve flood protection.
Start at the Source (1999)
Detailed discussion of permeable pavements and
alternative driveway designs presented.
Crawfordville, FL 32327
850-926-5310
Report No. EPA/600/R-94/051, USEPA (1994)-.
http://www.epa.gov/ost/stormwater/
City of Los Angeles
Urban runoff Management Division
650 South Spring. Street, Iii>: Floor
Los Angeles, California 90014 ·
htto:l/www.lacitv.om/san/swmd!
Tree People
12601 Mullholland Drive
Beverly Hills, CA 90210
(818) 623-4848
Fax (818) 753-4625
Bay Area Stormwater Management Agencies
Association
2101 Webster Street
Suite 500
Oakland, CA
510,-28p-1255
FINAL MODE~ SUSMP
Jointly Develop~d by Page 40of 41
San Diego Co-Permittees 2/14/02
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SUGGESTED RESOURCES·
Stormwater Management-in Washington State
(1999) Vols. 1-5
Presents detailed guidance on BMP design for new
development and construction.
Stormwat~r, Grading and Drainage Control Code,
Seattle Municipal Code Section 22.800-22.808, and
. Directors Rules,_ Volumes 1-4. (Ordinance
119965, effective July 5, 2000)
Texas Nonpoint Source Book-Online Module
(1998)www.txnpsbook.org
· .:..erese.o~·BMP·design and guidance information ________ on:.nne· · · ------· . . · 1-. ·-.. : .. :;_:.:.:~.-:..:.:...
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-The Practice of Watershed Protection by Thomas
R Shchuler and Heather K Holland
Urban Storm Drainage, Criteria Manual -Volume
3, Best Management Practices ( 1999)
Presents guidance for designing BMPs
HOW TO GET A COPY
Department of Printing
. State of Wqshington Department of Ecology
P.O. Box798
Olympia, WA 98507-0798
360-407-7529
City of Seattle
Department of Design, Construction & Land
Use
700 5th Avenue, Suite 1900
Seattle, WA 98104-5070
(206) 684-8880
httQ:llwww.ci.seattle. wa. us/dcluLCodes/sgdccode.fi
tm
Texas Statewide Urban runoff Quality Task Force-
North Central Texas Council of Governments
616 Six Flags Drive
.&!iog!:on, TX 76005
_-8 W·-695-9~:50-.. : ____ --··-··---------===::. _____ ·---
Center for Watershed Protection
8391 Main Street
Ellicott City, MD 21043
410-461--8323
WWW.DND.Ora
Urban Drainage and Flood Control District
2480 West 26th Avenue, Suite 156-B
Denver, CO 80211
303-455-6277
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FINAL MODEL SUSMP
Jointly Developed by Page41 of 41
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-. . . -· -~-----... ---·-·---------------
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---------·--· ---····· -···-------------·--
ATTACHMENT "G"
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Owner Training Log
Date: -----
Storm Vlater Management Topic: ---""----------
Specific Training Objective: -------------
Location: --'------------
Instructor: _____ _..__ ___ __,_
. ·-.:..··:·:=·~_-::·:.=-~.-.:=::.~=~--~:·_--.. _-___ -, .-... -_ .. -__ --===-------'-----------------·---·-· --·------·----·-·------
Attendee Rooster:
Name Company
----· ------------·-·---------··-------
Phone
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1. ::·-~-=-·---···---_______ : ___ --------~:__:_ -===-~~---------=--·--==---------____ -__ -·----~_:==_-____ -______ -____ ------=--==-~=-=
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ATTACI-Ilv1ENT "H"
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-M·aterial·. Delivery and Stor~ge
ffiI]
Standard S}'fflbol
BMP Objectives
o Soil Stabilization
o Sediment Control
o Tracking Control
l"!M-~
1 ... -___ . ----~:..-·:~.-~ .:~---------·--·----------------------------------. o Wmd Erosion Control
• Non-Sto!1ll Water Management
__ • Materials and Waste Management
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------'
Definition and Procedures and practices for the proper handling and storage of materials in a
Purpose manner that ~imizes or eliminates the discharge of these materials to the storm
drain system or to wa,tercourses.
Appropri~.te These procedures are implemented at all construction sites ~th delivery and
Applications storage ofthe following:.
• Hazardous chemicals such as:
Acids,
lime,
-glues,
adhe&ives,
-paints,
solvents, and
-curing compounds.
.• Soil stabilizers and binders.
• Fertilizers.
• petergents.
• Plaster.
• Petroleum products such as fuei oil, and grease.
• Asphalt and concrete components.
• Pesticides and herbicides.
&&., Caltrans Storm Wm.er Qual"ity Handboqks,
. ..., Construction Site Best Management Practices Manual
lbK:mn!IT March 1, 2003
Section a
Mmelial Delivery and Storage WM-1
1 of4
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M:aterial Delivery and Storage
• Other materials that may be detrimental if released to the environment
Limitations • -Space limitation may preclude indoor storage.
• Storage sheds must ~eet building & fire cooe requirements.
Standards and General
Specifications • Train employees and subcontractors on the proper m!lterial delivery and
storage practices. -
• Temporary storage area shall be located away from vehicular traffic.
• Material Safety Da~ Sheets (MSDS) shall be supplied to the Resident
J ___ ---_·--_-_--_·-_--_---_-_--_---__ --_,· ·_:::_-_-_-_ -_ -_--·_----:::--~====~--------------------------------· ------
. --
1 • Liquids, petroleum products, and substances listed in 40 CFR Parts 110, 117,
or 302 shall be stored in approved containers and drums and shall be placed in
temporary containment facilities for storage.
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• Throughout the rainy season, each temporary containment facility shall have
a permanent cover and side wind protection or be covered during non-
working days and prior to and during rain events.
• A temporary containment facility shall provide for a spill containment volume
able to contain precipitation from a 24-hour, 25-year storm event, plus the
greater of 10% of the aggregate volume of all containers or 100% ofth;
capacity of the largest container within its bounda:ry, whichever is greater.
• A temporary containn:J,eµt facility shall be impervious to the materials stored
therein for a minimum contact time of 72 hours.
• A temporary containment facility shall be maintained fre·e of accumulated
· rainwater and spills. In the event of spills or leaks, accumulated rainwater
and spills shall be collected and placed into drums. These liquids shall be
handled as a hazardous waste unless testing determines them to be non-
hazardous. All collected liquids or non-hazardous liquids shall be sent to an
approved disposal site.
• Sufficient separation shall be provided between stored containers to allow for
spill cleanup and emergency response access.
• Jncompatiole materials, such as chlorine and ammonia, shall not be stored in
the same temporary containment facility.
• Materials shall be stored in their-original containers and the original product
labels shall be maintained in place in a legible condition. Damaged or
otherwise illegible labels shall be replaced immediately.
a&.-Call:rans Sloon Water Quarity Handbooks
.... Construction Site Best Management Practices Manual
lblln:in, March 1, 2003
Sections
Material Delivery and Storage WM•1
2of4
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Material Delivery and Storage
•
• Bagged and boxed materials shall be stored on pallets and shall not be
allowed to accumulate on the ground. To provide protection from wind and
rain, throughout the rainy season, bagged .µid boxed materials shall be
covered during non-working days and prior to rain events.
• Stockpiles shall be protected in accordance with BMP WM-3, "Stockpile
Management"
• Minimize the material inventory stored on-site (e.g., only a few days supply).
• Have proper stoni.ge.instructions posted 1;11: all times in an open and
conspicuous location.
__ · _-_·· -·---·----· ... ------·-· ____ -----.. ____ . ---• Do not store hazardous chemicals, drums. or bagged materials directly on the
ground.-Place-these-items-on-a-pa.llet-ana=:when.possible;_un:.d.~r.J~.over in-----··-· -· --
secondai:y containment
• Keep· hazardous chemicals well labeled and in their original containers.
• Keep ample supply of appropriate spill clean up material near storage areas.
• Also see BMP WM-6, "Hazardous Waste Management", for storing of
hazardous materials.
Material Delivery Practices
• Keep an accurate~ up-to-date inventory of material delivered and stored on-
site.
• Employees trained in emergency spill clean-up procedures shall be present
when dangerotis·materials or liquid chemicals are unloaded.
Spill Clean-up
• Contain and clean up any spill immediately.
• If significant residual materials remain on the ground after construction is
complete, properly remove and dispose any hazardous materials or
contaminated soil.
• See BMP WM-4, "Spill Prevention and Control", for spills. of chemicals
and/or hazardous materials.
~ Caltrans Storm Water Ouarity Handbooks
..---., Co~on Site Best Management Practices Manual
11:tHnzM Match 1, 2003 ·
Section8
Material Delivery and Storage WM-1
3of4
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Material Delivery and Storage
Maint~nance. and • Storage areas sha:ll be kept clean, well organized, and equipped with ample
lnspectfon clean-up. supplies as appropriate for the materials being stored.
• Perimeter controls,-eontainment structures, covers, and liners shall be repaired
or replaced.as needed to-maintain proper function.
• Inspect storage areas before and after rainfall events, and.at least weekly
during other times. Collect and place into drums any spills.or accumulated
rainwater.
. --···--. ·-·-· ...... -···-·---.... -··---·--------··-· -····" -----···-·--·--·····-·····-· .. --··----·· -·· ··--· --------
cattrans stonn Water auam:y Handbooks
Construction Site Best Management Practices Manual
March 1, 2003
Seclion8
Material Delivery and Storage WM-1
4of4
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·Spill Prevention and Control
-Standard Symbol
Definition and These proced1,1res and practices are implemented to prevent and control spills in a
Purpose manner that minimizes or prevents the discharge of spilled material to the
drainage system or watercourses.
Appropriate This best management practice (BMP) applies to all construction projects. Spill
Application control procedures are implemented anytime chemicals and/or hazardous
sub$tances are stored. Substances may include, but are not limited to:
• Soil stabilizers/binders.
• Dust Pailiatives.
• Herbicides.
• Growth inhibitors.
• Fertilizers.
• Deicing/anti-icing chemicals.
• Fuels.
• Lubricants:
• Other petroleum distillates.
To the extent that the work can be accomplished safely, spills of oil, petroleum
products, substances listed under 40 CFR parts 110, 117, and 302, and sanitary
and septic wastes shall be contained and cleaned up immediately.
~ Caltrans Storm Wate,-Quafity Handbooks
..,,..,, Constnlcfion Site Best Management Practices Manual
lbl'lntn, March 1, 2003 ·
Section B
5pm Prevention and Control WM-4
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Spill p·revention and: Control
Limitations -. This BMI' only applies to spills caused by the contractor.
• Procedures and practices presented in this BMP are general. Contractor shall
identify appropriate practices for the specific materials used. or stored on-site.
Standards and • To the extent that if doesn't compromise clean up activities, spills shall be
Specifications covered and protected from-storm water run-on during rainfall.
• Spills shall not be buried or washed w:ith water.
I • Used clean up materials, contaminated materials, and recovered spill material
that is no longer suitable for the intended purpose shall be stored and disposed
.of in confotn:iance with the special provisions. ·
. , _ --· -------·--_. • Waterdrainused for cleaning and deconhtaallmjbnati~ sbaldl notdb~ allowed t~ enter
--"--------··_--_-...:.-·_·-·=··~··.:::...-.:._:-·=·=··~· ===::·sto~rm~-~~-~s .or-waterco.m.s.~s a:nd s · e couecte an disposed of m
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accordance witli .. BMJ>-w:Jvr::10;-"f;i-quid-Waste-Managemen.t..1-',=..-_-_-=--=--=--=--=--=-~----=--=--=--=--=--
• Water overflow or minor water spillage shall be contained and shall not be
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allowed to discharge into drainage facilities or watercourses.
• Prop~ storage, clean-up and spill reporting instruction for hazardous
materials stored or used on the project site shall be posted at all times in an
open, conspicuous and accessible location.
• · Waste storage areas shall be kept clean, well organized and equipped with
ample clean-up supplies as appropriate for the materials being stored.
Perimeter controls, containment structures, covers and liners shall be repaired
or replaced as needed to maintain proper function.
Education
• Educate employees and subcontractors on what a "significant spill" is for each
material they use, -and what is the appropriate response for "significant" and
itinsignifi.cant" spills.
• Educate empfoyees and subcontractors on potential dangers to humans and
the environment frozn spills and leaks.
• Hold regular meetings· to discuss and reinforce appropriate disposal
procedures (incorporate into regular safety meetings).
• Establish a continuing education program to indoctrinate new employees.
Ii The Contractor's Water Pollution ControlManager(WPCM) shall oversee
and enforce proper spill prevention and control measures.
~ Caltrans StormWater Quality Hoodbooks
-., Construction Sile Best Management Practices Manual
o,/bzirw March 1, 2003
SeclionB
Spin Prevention and Control WM-4-
2 of 4
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Spill Preventi-on and-Control
Cleanup Ell}d Storage Procedures
• Minor Spills
-Minor spills typically involve small quantities of oil, gasoline, paint, etc.,
which can be controlled by the first responder at the discovery of the
spill.
-Use absorbent materials on small spills rather than hosing down or
burying the spill.
-Remove the absorbent materials promptly and dispose of properly.
-The pract;ice commonly followed for a minor spill is:
_,_ ---------~-----=======-=~C=o=nt=ai=· n=th==;e;sp=r;e=ad=o~f~th=.-:~e~s-p=1-·=11~. -=-=-=-=-=-=-=~-=::::::.:::::::::::::::.:::.::::::.:::::::::.:::.-.::::::-=--=-=-=-=-=-=
-Recover spilled materia,s. I Clean the contaminated area and/or properly dispose of contaminated
materials.
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• Semi-Significant Spills
Semi-significant spills still can be controlled by the first responder along
with the aid of other personnel such as laborers and the foreman, etc.
This r~nse may require the cessation of all other activities.
-Clean up spills immediately:
Notify the project foreman immediately. The foreman shall notify the
Resident E11oaineer (RE).
-Contain spread of the spill.
-Ifthe spill occurs on-paved or -imp_ermeable surfaces, clean up using~
"dzy'' methods (absorbent materials, cat litter and/or rags). Contain·
the spill by ~circling with absorbent materials and do not let the spill
spread widely.
-. If the spill occurs in dirt areas, immediately contain the spill by
constructing an earthen dike. Dig up and properly dispose of
contaminated soil.
-If the spill occurs during rain, cover spill with tarps or other material
to prevent contaminating runoff.
• cattrans Storm Water Quality Handbooks
Construction Site Best Management Practices Manual
~ March 1, 2003
Section 8
Sp!R Prevention and Control WM-4
3of4
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·$p.il·I Prevention· and Control
• Significant/Hazardous Spills
--For significant ot hazardous spills that cannot be controlled by personnel
in the immediate vicinity, the following steps shall be taken:
-Notify the RB immediately and follow up with a '\\'li.tten.report.
-Notify the local emergency response by dialing 911. In addition to
911, the contractor will notify the proper county officials. It is the
contractor's responsibility to have all emergency phone numbers at
the construction site.
-Notify the Governor's Office of Emergency Services Warning Center,
J ____ -========-------~=--(805) 852-7550.
-------------=======:'.::==:J·Ft£o!!r~-sQ;pills!J.!!--o~f~fe~d~eral~-~rep~-~ortab~~le.quantities,_in_c_o..Dfonnance with the
I requirements in 40 CFR parts 1T0~T9, ano."302;tlre-contractor-shall
. notify the National Response Center at (800) 424-8802.
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-Notification sb,all first be made by telephone and followed up with a
written report.
-The services of a spills contractor or a Haz-Mat team shall be
obtained immediately. Construction personnel shall not attempt to
clean up the spill until the appropriate and qwilified staffhave arrived
at the job site.
Other agencies which may need to be consulted include, but are not
limited to, the Fire Department, the Public Worlcs Department, the
Coast Guard, the Highway Patrol, the City/County Police
Department, Department of Toxic Substances, California Division of
Oil and Gas, CaVOS~ RWQCB, etc.
Maintenance-and • Verify weekly that-spill control clean up materials are located near material
Inspection storage, unloading, and use ~eas.
• Update spill prevention and control plans and stock appropriate clean-up
materials whenever changes occur in the types of chemicals used or stored
onsite.
Alf&.. caltrans Storm Wamr auarrt.y Handbooks .
-., Construction Site Best ManagementPractic:es Manual
li:tHrons March 1, 2003 .
Sections
Spill Prevention and Control WM-4
4of4
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Sol.id Waste Management
standard Symbol
BMP Objectives
o Soil Stabifization
o Sediment Control _, ___________ . -
o Tracking Control
o Wind Erosion Control
• Non-Storm Water Management ~~=========================~1=--=t-·-~~ria!s·and·Waste·Management-:--------
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Definition and Solid waste management procedures and practices are designed to minimize or
Purpose eliminate the discharge of pollutants to the drainage system or to watercourses as
a result oftbe creation, stockpiling, or removal of construction site wastes.
Appropriate Solid waste management procedures and practices are implemented on all
Applications construction projects that generate solid wastes.
Solid wastes include but are not limjted to:
• Construction wastes including brick, mortar, timber, steel and metal scraps,
sawdust, pipe and electrical cuttings, non-hazardous equipment parts,
styrofoam ~d other materials used to transport and package construction
materials~
• Highway planting wastes, including vegetative material, plant containers, and
packaging materials.
• Litter, including food containers, beverage cans, coffee cups, paper bags,
plastic wrappers, and smoking materials, including litter generated by the
public.
Limitations • Temporary stock.piling of certain construction wastes may not necessitate
stringent drainage related controls during the_non-rainy season or in desert
areas with low rainfall:
.... Caltians, stormWater Quality Handbooks
---Construction Site Best Management PracQc:es Manual
lMnms March 1, 2003 ·
Secfion8
Solid Waste Management WM-5
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Solid Waste Managem-ent
Standards and Educati()n
Specifications • The Contractor's Water Pollution Control Manager (WPCM) shall oversee
and enforce proper solid waste procedures and practices.
• Instruct employees and subcontractors on identification-of solid waste and
hazardous waste.
• Educate employees and subcontractors on solid waste storage and disposal
pro¢edures.
• Hold regular meetings to discuss and reinforce disposal procedures
(incoi::porate into regular safety meetings).
• Require tha~ employees and subcontractors follow solid waste handling and
storage proeedures. -----------------:=::================--------------
• Piobibit littering bf-employees, subcon,tractors, -and-visitors.
• Wherever possible, minimize production of solid waste materials.
Cof/ection, Storage, and Disposal
• Dumpsters of sufficient size and number shall be provided to contain the solid
waste generated by the project and properly serviced.
-• Littering_ on the project site shall be prohibited.
• To prevent clogging of the storm drainage system litter and debris removal
from drainage grates, trash racks, -and ditch lines shall be a priority.
• Trash receptacles shall be provided in the Contractor's yar~ field trailer
areas, and at locations where workers congregate for lunch and break periods.
• Construction debris and litter from work areas within the construction limits
-of the-project site shall be co~lected and p 1ac~d.in watertight dumpsters at
1~ weekly regardless of whether the litter was generated by the Contractor,
the public, or others. Collected litter and debris shall not be placed in or next
to drain inlets, storm water drainage systems or watercourses.
• ·pun dumpsters shall be removed from the proj_ect site .and the contents shall
be disposed of outside the highway right-of-way in conformance with the
provisions in the Standard Specifications Section 7-1.13. ·
• Litter stored in collection areas and containers shall be handled and disposed
ofby trash hauling contractors.
• Construction debris and waste shall be removed from the site every two
weeks or as di,rected by the RE.
11111,, Caltrans Storm Wat.er Quality Handbooks
... Construr:tion Site Best Management Pr.!c:Hces Manual
lbllmn, March 1, 2003
Sedion B
SoUd Waste Management WM-5
2of4
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Solid Waste Management
• ConStruction material visible to the publie shall be stored or stacked in an
Qrderly manner to the satisfaction ofthe RE.
• Storm water run-on shall be prevented from contacting stored solid waste
through the use of berms, dikes, or other temporary diversion structures or
through the use of measures to elevate waste from site surfaces.
•--Solid waste storage areas shall be located at least 15 m (50 ft) from drainage
facilities and watercourses and shall not be located in areas prone to flooding
orponding.
• Except.during fair weather, construction and highway planting waste not
stored in watertight dumpsters shall be securely covered from wind and rain
'by covering the waste with tarps or plastic sheeting or protected in
conformance with the applicable Disturbed Soil Area protection section. I ___ _ ---=---:-_::.._-:..._-_-_-_-=----=----~-=----=--=----=----=----_-=--------=------:----:----'-=--~-Bu,mpster-washout-on-the-pr0jest-si~-not="iillowed~-----------
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• Notify 'tras~ hauling contractors that only watertight dumpsters are acceptable
for use on-site.
• Plan for additional containers during the demolition phase of construction.
• Plan for more frequent pickup during the demolition phase of construction.
• Construction -waste shall be stored in a designated area approved by the RE.
• Segregate potentially hazardous waste from non-hazardous constructi~n .site
waste.
• Keep the site clean of litter debris.
• Make sure that toxic liquid wastes ( e.g., used oils, solvents, and paints) and
chemi~als (e.g., acids, pesticides, additives, curing compounds) are not
disposed. of in dumpsters designated for_ construction debris. · . . ' .
• "Dispose of non--hazardous waste·in accordance with Standard Specification
7-1.13, Disposal of Material Outside the Highway Right of Way,
• For disposal ofhazardous waste, see BMP WM-6, "Hazardous Waste
Management." Have hazardous waste hauled to an appropriate disposal
and/or recycling facility.
• Salvage or recycle useful vegetation debris, packaging and/or surplus building
materials when practical For example, trees and shrubs from land clearing
can be converted into wood chips, then used as mulch on graded areas. Wood
pallets, cardboard boxes, and construction scraps can also be recycled.
£. Cattrans Storm Wat.~r~lity Handbooks . Construction Site Best Management Practices Manual
tiJlfn:v6 March 1, 2003
Sections
Solid Waste Management WM-~
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Solid Waste Management
Maintenance and • The WPCM shall mon~tor onsite solid waste storage .and disposal procedures.
Inspection • Police -site 'for litter and debris.
. -------------~----·---
A!'Jll'&ir Calttans Stonn WaterQuaRty Hardbooks ... --., Construc,tion Site Best Management Practices Manual
lb/ln:US March 1, 2003
------------------
Section8
Softd Waste Management WM-5
4of4
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Street Sweeping an.d Vacuuming
ssv
Standard Symbol
BMP Objectives-
• Soll Stabilization
• Sediment Control
• Tracking Control
o Wind Erosion Control
_ o Non-Storm Water Management ----~-····-.... -o-Materia!s-and-Waste-Mana~ement-1----
Definition and Practices to remove tracked sediment to prevent the sediment from entering a
Purpose storm drain or watercourse. ·
Appropriate These practices are implemented anywhere sediment is tracked from the project
Applications site onto public or private paved roads, typically at points of ingress/egress.
Limitatiohs Sweeping and vacuuming may not be effective when soil is wet or muddy.
Standards and • Kick brooms or sweeper attachments shall not be used.
S pacifications.
• Inspect potential sediment tracking locations daily.
• Visible sediment tracking shall be swept and/or vacuumed daily.
• If not.mixed with debris or trash, consider incorporating the removed
·sediment back into the.project.
Maintenance and • Inspect ingress/egress access points daily and sweep tracked sediment as
Inspection needed, or as required by the Resident Engineer (RB).
• Be c_areful not to sweep up any unlmovvn.substance or any object that may be
potentially hazardous.
• Adjust brooms frequep.tly; maximize efficiency of sweeping operations.
• After sweeping is finished, properly dispose of sweeper wastes at an approved
dumpsite in conformance with the provisions in Standard Specifications
Section 7-1.13 .
• ~ns Storm Water Quality Handbooks
Construction Sita Best Management Practices Manual
lb/fmn, March 1, 2003
Section4
Street SWeeping and Vacuuming SC-7
1 of 1
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Water Conservation Practices JNs-1j ·
Standard Symbol
BMP ObjectiVes
o Son Stabilization
o Sediment Control
o Tracking Control .. I ________ ···---·-···-__________ --·----------··--____ ~~~~=~z:nagement
--------1---------~-------------l---l-0-Kralen~s..and..Waste...Managem.Etlll~----_-_·_··_--_---_--_--_--
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Definition and Water conservation practices are activities that use water during the construction of
Purpose a project in a manner that avoids causing erosion and/or the transport of pollutants
off site.
Appropriate • Wat.er conservation practices are implemented on all construction sites and
Applications wherever water is·used.
• Applies _to all construction projects.
Limitations ra None identified.
Standards and • Keep water equipment in good working condition.
Specifications
• Stabilize water truck filling area.
. •--Repair,water-leaks,promptly,,
• Vehicles and equipment washing on the construction site is discouraged.
• Avoid using water to clean construction areas. Do not use water to clean
pavement Paved areas shall be swept and vacuumed.
111 Direct construction water runoff to areas where it can infiltrate into the ground.
• Apply water for dust control in accordance with the Standard Specifications
Section 10, and WB-1, "W'md Erosion Control."
• Report discharges to RE immediately.
.. Caltrans Storm Water quality Handbooks
c;:onstruction Site Best Management Practices Manuai
11:,/f,aM March 1, 2003
Section7
Water Conservation Practices NS-1
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Water Conservation Practices
Maintenance and • Inspect water equipment at least weekly.
Inspection
• Repair water equipment as needed.
-·-----·-·w ___ --__ , •• ---· ·---••• • -....., • ~ •• ••••--.-·--•••••-• -·-• •--··•-• • -•• •--··•-•-•••-----·---• ------•• •• ••••
&. Caltrans Storm Water Quality Handbooks
Construction Site Best Management Practices Manual
lblbr.rM March 1, 2003
Sec!lon7
Water Conservation Practices NS-1
2of2
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.. Potable Water/Irrigation
:..~ ...
Definition and
Purpose
Standard S}'ltlbot
BMP Objectives
o Soil Stabilizalion
o Sediment Control
o Tracking Confrol
o Wind Erosion Control
• Non-Stonn Water Management
---0-Materlals:and .. Waste..Manag~m .. e.o_t ____ _
Potable Water/Irrigation management consists of practices and procedures to
manage the discharge of potential pollutants generated during discharges from
irrigation water lines, landscape irrigation, lawn or garden watering, planned and
unplanned discharges from potable water sources, water line flushlng, and hydrant
flushing.
Appropriate Implement this J;J:MP whenever the above activities or dischatges occur at or enter
Applications a construction site.
Limitations •
Standards a:nd •
Specifications
None identified.
Inspect irrigated areas within the censtruction limits for excess watering.
Adjust watering times and schedules to ensure that the appropriate ammmt of
water is being used and to minimize runoff. Consider factors such l.iS soil
structure, grade, tim~ of year, and type of plant material in determining the
proper amounts of water for a specific area.
• RE approval is required prior to commencing any washing activities that could
discharge to the storm drain or receiving waterbody.
• Where possible, direct water from off-site sources ar.ound or through a
construction site in away that minimizes contact with the construction site.
• When ,possible, discbarges ftom water line flushing shall be.reused for
landscaping purposes.
• Shut off the water source to broken lines, sprinklers, or valves as soon as
possible to prevent excess water flow.
Caltrans Storm Water Quality Handbooks
Construction Site Best Management Practices Manual
March 1, 2003
Section 7
Potable Waternrrigation NS-7
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Potabl.e Water/Irrigation
•· Protect downstream storm water drainage systems and watercourses from
wa~r )?-umped or-baiJed from trenches. excavated to repair water lines ..
Maintenance and • Repair broken water lines as soon as possible or-as directed by the RB.
Inspection
• hlspectinigated areas regularly for.signs of erosion and/or discharge.
------------------------------------.. ··------------------
Ca!lrans storm Water Quanty HandbooJ:cs
Construction Site Best-Management Practices Manual March 1, 2003 .
Section7
Potable Waterilrrigation NS-7
2of2
10 0 10 20 ~------
Scale1 1' = 10'
C: \DWG12\ClS8-IP.DWG
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NOTES , •
1) ALL PVC DRAINAGE PIPES SHALL CONFORM TO ASTM 03350, CELL ClASS 324420C (4" -10' DIA.) & 335420C (12 -15 DIA.),)
"SURE-LOK F477' AS MANUFACTURED BY HANCOR INC: MSHTO M252, 1YPE S (4"-10') ANO M!iHTO M294, TiPE S (12"-15
2) LENGTHS OF DRAINAGE PIPE ARE FROM CENTER OF STRUClURE TO CENTER OF STRUClURE
3) CONTRACTOR TO VERIFY HORIWNTAL AND VERTICAL LOCATION OF EXISTING UNDERGROUND
'wATER, SE'wER AND STDRM DRAINAGE SYSTEMS PRIOR TO TRENCHING FUR NE'w
CONNECTING FACILITIES. IN THE EVENT ACTUAL LOCATION VARIES SIGNIFICANTLY FROM THAT
SHO'wN ON PLAN, THE ENGINEER OF 'wORK SHALL BE NOTIFIED PRIOR TO PROCEEDING
'w!TH INSTALLATION. ALL EXIST. FACILITIES SHALL BE PROTECTED DURING CONSTRUCTION.
------
156-051-16
EXISTING STRUCTURE I
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CONSTRUCTTON LEGEND
(D 24' X 24' JUNCTION BOX PER DETAIL 'A' ON SHEET 2
@ 12'X 12' CATCH BASIN PER DETAIL 'B' ON SHEET 2
@ MODIFIED BROY DITCH PER DETAIL 'C' ON SHEET 2
'D' ON SHEET 2 @
®
®
24' X 24' JUNCTION BOX PER DETAIL
GRASS LINED CHANNEL PER DETAIL E' ON SHEET 2
BRDV DITCH PER S,D.R,S.D. D-75 (TYPE B)
® 12'X 12' CATCH BASIN PER DETAIL 'F' ON SHEET 2
@ CONCRETE HEADVALL PER DETAIL 'G' ON SHEET 2
@ ENERGY DISSIPATER PER DETAIL 'H' ON SHEET 2
@) MASONRY RETAINING VALL PER S.D.R.S.D. C-1
@ MASONRY RETAINING VALL PER S,D.R.S.D, C-3
@ MASONRY RETAINING \IALL PER SPECIAL DESIGN
@ PAVEMENT <3'AC OVER 6' CLASS 2)
®
@
VATER SERVICE UNDER SEPARATE CONTRACT
SEVER LATERAL UNDER SEPARATE CONTRACT
STORM WATER MANAGEMENT PLAN
(SWMP) NOTES
TREATMENT CONTROL BMPS
51 -WATER QUALITY FILTRATION BOX
PERSWMP
52-RIP-RAP
(ENERGY DISSIPATER)
SYMBOL LEGEND
DESCRIPTION SYMBOL
ELEVATION, TOP OF FOOTIN,u__ __ TF
ELEVATION, TOP OF WALL TW
ELEVATION, TOP OF CURB TC
ELEVATION, TOP OF BERM TB
ELEVATION, FINISH SURFACE FS
ELEVATION, FINISH GRADE FG
ELEVATION, TOP OF GRAT TG
ELEVATION, HIGH POINT HP
ELEVATION, LOW POINT LP
ELEVATION, FLOW LINE FL
ELEVATION, FINISHED FLOOR, ___ FF
ELEVATION, TOP OF STRUCTURE __ TOP
ELEVATION, INVERT ELEVATION __ IE
ELEVATION, EXISTING ___ (950.50)
ELEVATION, PROPOSED ____ 950.50
DETAIL REFERENCE fl2<0DETAIL LABEL
~HEET NO.
PREPARED UNDER THE SUPERVISION OF,
_____________________ DATE _______ _ --I I I I
I GARY LIPSKA RCE 23080 EXPIRES 12/31/05
)' '\
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P.E. ___ _ EXP. DATE
REVIEVED BY•
INSPECTOR DATE
1---1---1------------+---t---'--t--t-----a I SHE3ET I CITY OF CARLSBAD I SHE7ETS I
ENGINEERING DEPARTMENT ::=====--==::::::::=:::::::::::::::=========-====;
BENCH MARK
DESCRIPTION• CITY OF CARLSBAD CONTROL MONUMENT #86, l---l---+---------------t---t---r-~1-1
#127, #128 and 11139 AS SHDVN ON RDS 17271 1---1--+.,.1-----------~---+---t---t---t----1
LOCATION, -------,--------------
RECDRDEDi ~Nn;GuY:.i.P/_(;2..;z9~--.,,,.,.-----:-:c=---:-:-:c-:----
ELEVATION1 PER RDS 17271 DATUM1_.,_M.,,.S"",L"--' __
DAlE INITIAL
ENGINEER OF WORK REVISION DESCRIPTION
DA TE INITIAL DAlE INITIAL
OlHER APPROVAL CITY APPROVAL
GRADING PLANS FOR:
DUNN RESIDENCE
2200 HIGHLAND DRIVE
APPROVED LLOYD 8. HUBBS
CITY ENGINEER PE 23889 EXPIRES 12 31 05 DATE
OWN BY:
CHKD BY:
RVWD BY:
PROJECT NO.
HDP 02-10/CDP 02-42
DRAWING NO. xxx-xx
PLOT DATE1 7 /01/04
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10 o'-------'10 20
Scnle• l' = 10'
C: \DWG12\Cl.SB-IP.DWG
DRAINAGE MAP POST CONSTRUCT/ON
SCALE: 1 "=1 O'
BENCH MARK
DESCRIPTION• CITY OF CARLSBAD CONTROL MONUMENT #86,
11127, 11128 nnd 11139 AS SHOIJN ON RDS 17271
LOCATION•
RECORDED• ...,N"=Gc:!V~D._,,2~9'=-=-=------------
ELEVA TIDN• ..,P__,E.,.R,_,,,R""O""S_._,17c.2,.,_7_.,l ____ DA TUM• __,M""',S"''""L.'---~
1
DA1E INITIAL
ENGINEER OF WORK
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REVISION DESCRIPTION
DA1E INITIAL
OlliER APPROVAL
SYMBOL LEGEND
DESCRIPTION SYMBOL
ELEVATION, TOP OF FOOTIN,,,_ __ TF
ELEVATION, TOP OF WALL TW
ELEVATION, TOP OF CURB TC
ELEVATION, TOP OF BERM TB
ELEVATION, FINISH SURFACE FS
ELEVATION, FINISH GRADE FG
ELEVATION, TOP OF GRAT TG
ELEVATION, HIGH POINT HP
ELEVATION, LOW POINT LP
ELEVATION, FLOW LINE FL
ELEVATION, FINISHED FLOOR ___ ,FF
ELEVATION, TOP OF STRUCTURE __ TOP
ELEVATION, INVERT ELEVATION -,--IE
ELEVATION, EXISTING ____ (950,50)
ELEVATION, PROPOSED ___ 950.50
DETAIL REFERENCE ~DETAIL LABEL
. \.U)SHEET NO.
_DATE7/-?:.WL1:--
RCE 23080 EXPIRES 12/31/05
No. :.M80
DA 1E INITIAL
CITY APPROVAL
CITY OF CARLSBAD
ENGINEERING DEPARTMENT
DRAINAGE MAP FOR:
DUNN RESIDENCE
2200 filGHLAND DRIVE
APPROVED LLOYD 8. HUBBS
CITY ENGINEER PE 23889 EXPIRES 12 31
DWN BY: PROJECT NO.
CHKD BY:
RVWD BY: HDP 02-10/CDP 02-42
05 DATE
DRAWING NO. xxx-xx
PLOT DATE• 7/22/04 -
Seo.lei 1' = 10'
• CIVIL ENGINEERING * LAND PLANNING '11111Jp/terra Engineerina Inc. ~ 1843 Campesino Pkce
~Oceanside, CA 92054 ~ Tele: (760) 439-2802
Fax: (760) 439-2866
C: \DWG12\CLS8-IP.DWG
DRAINAGE MAP
SCALE:
PRECONSTRUCT/ON
1"=101
BENCH MARK
DESCRIPTION• CITY OF CARLSBAD CONTROL
#127, #128 o.nd #139 AS SHOWN
LOCATION•
MONUMENT #86,
ON RDS 17271
RECORDED• _,_N,..,G...,V':JD~2'='9'=-,..,,.,,..,,..,------------
ELEVA TION1 PER ROS 17271 DATUM1_M,:.,,eeS".L_,_. __ _
1
DATE INITIAL
ENGINEER OF WORK
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REVISION DESCRIPTION
DATE INlllAL DATE INlllAL
OTHER APPROVAL CITY APPROVAL
-----~-DATE_7/l:_ZLQ1
23080 EXPIRES 12/31/05
CITY OF CARLSBAD [sHECTSl
L!_J ENGINEERING DEPARTMENT
DRAINAGE MAP FOR:
DUNN RESIDENCE
2200 HIGHLAND DRIVE
APPROVED LLOYD B. HUBBS
CITY ENGINEER PE 23889 EXPIRES 12 31
OWN BY: PROJECT NO.
CHKD BY: --11 HDP 02-10/CDP 02-42 RVWD BY:
05 DATE
DRAWING NO. xxx-xx
PLOT DATE, 7 /30/04
·10 o;__ __ __,10 20
Scole1 1' =
CIVIL ENGINEERING * LAND PLANNING
'terra Engineerin_q Inc.
1843 Campesino P"face
Oceanside, CA 92054
Tele: (760) 439-2802
Fax: (760) 439-2866
C: \OWG12\Cl.SB-IP.OWG
DRAINAGE MAP
SCALE:
PRECONSTRUCT/ON
1 "=1 ci'
BENCH MARK
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PERVISIDN OF,
---~x-----_______ DATE 7/zzLQt/--
GARY ysKA RCE 23080 EXPIRES 12/31/05
i---t---+----------+---1-----1---1----11 SHE1ET I CITY OF CARLSBAD I SHElETS I
;::::=='...::::::::::E::N::G::::IN::E::E::RI:::N::::G:::::D:::E:::P:::::AR:::T:::M::E:::NT::::::==.===:::
DRAINAGE MAP FOR:
DUNN RESIDENCE
2200 HIGHLAND DRIVE
APPROVED LLOYD B. HUBBS
DESCRIPTION, CITY OF CARLSBAD CONTROL MONUMENT #86,
#1271 #128 ond #139 AS SHOWN ON RDS 172711---1--+-,,.----------------l----l----l---11----1 CITY ENGINEER PE 23889 EXPIRES 12 31 05 DATE
LOCATION•
RECORDED• _ ... N~G~Y=::D!'--:'!2~9c:::---:==-:------------ELEVATION1 PER ROS 17271 DATUM•__,_M=,S=,L,.._, __
DA TE INITIAL
ENGINEER OF WORK
DATE INITIAL
REVISION DESCRIPTION OlHER APPROVAL
DWN BY:
DATE INITIAL CHKD BY: __ _
CITY APPROVAL RVWD BY:
PROJECT NO.
HDP 02-10/CDP 02-42
DRAWING NO. xxx-xx
PLOT DATE, 7 /30/04
/
10 0 10 20 -----
Scnle• 1' = 10'
CML ENGINEERING * LAND PLANNING IJfA~Eterra Engineerina Inc.
, . ~ 1843 <;ampesino Pface ff ,,..~ Oceanside, CA 92054 f ~±~~ Tele: (760) 439-2802 '.'. (~f1,;f;, > Fax: (760} 439-2866 ~I-;. ~:t~~~-"'.'tt' .-;:<:?~ ;~---. .
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SYMBOL LEGEND
DESCRIPTION SYMBOL
ELEVATION, TOP OF FOOTIN~--TF ELEVATION, TOP OF WALL TW
ELEVATION, TOP OF CURB TC
ELEVATION, TOP OF BERM TB
ELEVATION, FINISH SURFACE FS
ELEVATION, FINISH GRADE FG
ELEVATION, TOP OF GRAT TG
ELEVATION, HIGH POINT HP
ELEVATION, LOW POINT LP
ELEVATIOH, FLOW LINE FL
ELEVATIONJ, FINISHED FLOOR ___ FF
ELEVATIONJ, TOP OF STRUCTURE __ TOP
ELEVATION, INVERT ELEVATION __ IE
ELEVATION, EXISTING ____ (950;50)
ELEVATION, PROPOSED ___ 950.50
DETAIL REFERENCE ~DETAIL LABEL
\_]j(;SHEET NO.
No.~800
_DA TE'J/_7=.?fo._f/:.-
EXPIRES 12/31/05
I
DRAINAGE MAP POST CONSTRUCT/ON l--+-----1------------+--..J-----ll------1-----Hl SH1EET I CITY OF CARLSBAD I SHE1ETS I ENGINEERING DEPARTMENT :=:=:..=:::=========:..=:::=::::::: SCALE: 1 "= 1 O'
BENCH MARK
DESCRIPTION• CITY OF CARLSBAD CONTROL MONUMENT #86,
#127, #128 o.ncl #139 AS SHOWN ON RDS 17271 LOCATION• ________________ _
RECORDED• _.N..,G.wV._,n,._.2_9'-------------'----
ELEVATIDN• PER RDS 17271 DATUM1 __.M.,.,.S,,,,.L..,. __ ~
DATE INITlAL
ENGINEER OF WORK
1
DATE INITIAL DATE INITIAL
REVISION DESCRIPTION OlHER APPROVAL CITY APPROVAL
DRAINAGE MAP FOR:
DUNN RESIDENCE
2200 filGHLAND DRIVE
APPROVED LLOYD 8. HUBBS
CITY ENGINEER PE 23889 EXPIRES 12 31 05 DATE
OWN BY:
CHKD BY: __ _
RVWD BY:
PROJECT NO.
HDP 02-10/CDP 02-42
DRAWING NO. xxx-xx
PLOT DA TE• 7 /22/04