HomeMy WebLinkAboutPD 2018-0008; CHESTNUT AVENUE RESIDENCE; HYDROLOGY REPORT; 2018-04-04Hydrology Study
1161 Chestnut Avenue
Carlsbad, CA 92008
Chestnut Avenue Residence
DWG GR2018-____
Prepared for:
Irwin Goldman
810 East Dyer Road
Santa Ana, CA 92705
Prepared By:
John P. Strohminger RCE 55187
dba Pacific Overland Engineering & Surveying
635 Via Columbia
Vista, CA 92081
I'It\III
Date: April 4, 2018
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No. C55187
Exp. 6/30/k' 4.
APR 0 5 2018
LAND DEVELOPMENT
ENGINEERING
4-4-1g
John P. Strohminger RCE 55187 Date
1
1 TABLE OF CONTENTS
2 Project Description................................................................................................................................2
2.1 Existing Condition .........................................................................................................................2
2.2 Proposed Condition ......................................................................................................................3
2.3 Soil Characteristics........................................................................................................................3
3 Rational Method Description................................................................................................................3
4 Hydrology Analysis................................................................................................................................4
5 Water Quality........................................................................................................................................4
6 Hydromodification................................................................................................................................4
7 Conclusion.............................................................................................................................................5
8 Attachments..........................................................................................................................................5
9 References ............................................................................................................................................5
2 PROJECT DESCRIPTION
This project is a 0.22 acre residential parcel located at 1161 Chestnut Avenue in the City of Carlsbad. It is
a panhandle lot. Chestnut Avenue is a public street that connects with Adams Street to the west and
Highland Drive to the east. The existing site was graded to create a buildable pad from Grading Plan
Drawing Number 398-6A. There are no structures onsite. Proposed improvements consist of a single-
family detached dwelling unit and driveway. Existing retaining walls along the east property line will
remain in place. The site's APN number is 205-210-96-00. The legal description is Parcel 1 of Parcel Map
19764. A Vicinity Map is in the attachments.
2.1 EXISTING CONDITION
The existing site has a graded pad for a single-family residence and driveway at an average elevation of
110 feet above Mean Sea Level (MSL). The elevation of the street fronting the property pan handle is at
100 feet MSL. There are two 4 foot high retaining walls along the rear property line to the east. To the
south is an existing single-family residence one foot higher than the proposed structure. To the north is
an existing single family residence three feet lower than the proposed structure. To the west is an
existing single family residence six feet lower than the proposed structure. To the rear is an existing
single family residence 12 feet higher than the proposed structure.
Storm water from the site surface flows to the panhandle, continues down the driveway to an existing
Brooks Inlet at the right of way with Chestnut. From there the storm water is taken by underground
conduit to an existing curb inlet in Chestnut and westerly in a storm drain system in the street. The site
does not take on any flows from neighboring properties.
2
2.2 PROPOSED CONDITION
The proposed project creates a single-family residence with a driveway, patio, and front yard hardscape.
The improvements and grading will disturb 7,499 square feet of area. The amount of new and replaced
impervious surface will be 4,353 square feet. The new drainage pattern is similar to the existing
drainage pattern. Initial storm water starts at the slope and wall system in the rear yard to the east.
From there it is routed around both sides of the house to a confluence at the beginning of the
panhandle portion of the lot. Flows then continue on the surface of the existing drivewayto the existing
inlet mentioned above.
2.3 SOIL CHARACTERISTICS
The following soil group definitions come from Technical Release 55 (TR-55) by the United States
Department of Agriculture:
Group A soils have low runoff potential and high infiltration rates even when thoroughly wetted. They
consist chiefly of deep, well to excessively drained sand or gravel and have a high rate of water
transmission (greater than 0.30 in/hr).
Group B soils have moderate infiltration rates when thoroughly wetted and consist chiefly of moderately
deep to deep, moderately well to well drained soils with moderately fine to moderately course textures.
These soils have a moderate rate of water transmission (0.15-0.30 in/hr).
Group C soils have low infiltration rates when thoroughly wetted and consist chiefly of soils with a layer
that impedes downward movement of water and soils with moderately fine to fine texture. These soils
have a low rate of water transmission (0.05-0.15 in/hr).
Group D soils have high runoff potential. They have very low infiltration rates when thoroughly wetted
and consist chiefly of clay soils with a high swelling potential, soils with a permanent high water table,
soils with a clay pan or clay layer at or near the surface, and shallow soils over nearly impervious
material. These soils have a very low rate of water transmission (0-0.05 in/hr).
The conservative approach is assuming Group D soils for the site.
3 RATIONAL METHOD DESCRIPTION
The rational method, as described in the 2003 San Diego County Hydrology Manual, was used to
generate surface runoff flows, which were then used to size the drainage facilities.
The basic equation: 0 = CiA
Q = Peak Flow of Storm Water in Cubic Feet per Second (cfs)
C = runoff coefficient (varies with land use)
= Intensity (in/hr)
A = Area (acres)
3
The 6 hour and 24 hour rainfall isopluvial maps are found in the 2003 San Diego County Hydrology
Manual. Adjusted P6 calculations can be found in the Attachments. Initial travel time calculations (Ti) are
set on a minimum 5 minutes as prescribed by the City and County.
4 HYDROLOGY ANALYSIS
The table below summarizes the pre- and post-construction 100-year flows. The outfall points are
shown on the Existing and Proposed Drainage Exhibits included in this report.
Description A (ac) Q (cfs)
Existing 100-Yr Node #102 0.173 0.41
Total 0.173 0.41
Proposed 100-Yr Node #203 0.173 0.48
Total 0.173 0.48
Table 1 Summary of existing and proposed stormwater runoff.
The total pre-development 100 year flow is 0.41 cfs. The total post-development 100 year flow is 0.48
cfs. The additional 0.07 cfs will be mitigated by routing flows through the front-yard planter as shown
on the Proposed Condition drawing.
The Analysis and Exhibit for the pre-development condition and for the post-development condition is in
the Attachments.
5 WATER QUALITY
This project is a Standard Development Project per the completed Storm Water Standards
Questionnaire (E-34) provided in the attachments. This project is therefore not required to submit a
Storm Water Quality Management Plan (SWQMP).
6 HYDROMODIFICATION
This project is exempt from Hydromodification requirements since it is not a Priority Development
Project.
4
7 CoNcLusioN
The existing condition discharges 0.41 cubic feet per second of storm water at the northwest corner of
the property. From there is flows on the surface 90 feet to the north to a Brooks Box inlet and on to the
Pacific Ocean in an underground conduit.
The proposed condition discharges 0.48 cubic feet per second of storm water at the northwest corner of
the property. From there is flows on the surface 90 feet to the north to a Brooks Box inlet and on to the
Pacific Ocean in an underground conduit.
8 ATrACHMENTS
Includes:
Vicinity Map
Existing Drainage Map
Existing Drainage Spreadsheet Analysis
Proposed Drainage Map
Proposed Drainage Spreadsheet Analysis
Table 3-1, Runoff Coefficients for Urban Areas
100 Year 6 Hour Isopluvial
100 Year 24 Hour Isopluvial
Figure 3-1, Intensity-Duration Design Chart
Manning's Nomograph for Swale Flows
E-34, Storm Water Standards Questionnaire
E-36, Standard Project Requirement Checklist
9 REFERENCES
City of Carlsbad Engineering Design Manual by the City of Carlsbad
San Diego County Drainage Design Manual by the County of San Diego, May 2005.
San Diego County Hydrology Manual by the County of San Diego, June 2003.
Urban Hydrology for Small Watersheds TR-55 by the United States Department of Agriculture,
June 1986.
Low Impact Development Handbook by the County of San Diego, December 31, 2007.
Water Quality Control Plan for the San Diego Basin by the California Regional Water Quality
Control Board San Diego Region, April 25, 2007.
Storm water Best Management Practice Handbook by California Stormwater Quality Association,
September 30, 2004.
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1161 Chestnut Avenue, Carlsbad, CA 92008
John P. Sfrohrnfriger Engineering
C:\Users\John Strohminger\Dropbox\Engineering and Surveying\Active Jobs\1161 Chestnut Avenue\Druwlng Files 1161 Chestnut\Orainage Existing Coraiition.dwg, 4/4/2018 1.2:02.27 PM
Pre-Development Hydrology 1161 Chestnut Avenue, Carlsbad, Ca, 92008, April 3, 2018, John P. Strohminger Engineering
Nodes Incr. Total Soil Land C Incr. Total Flow Slope Over- Kirpich Manning Tc I Q=CIA Notes
Area Area Gp Use C*A C*A Path, % land Ti Ti mm, in/hr Q, cfs.
ac. ac. ft. Ti, mm. mm. cum.
mm
100-101 0.012 0.012 0 Veg 0.35 0.004 0.004 10 50.00 5 6.59 0.03 Initial Tc 5 minutes
101-102 0.161 0.173 D Veg 0.35 0.061 0.065 132 1.5 0.32 5.3 6.33 0.41
Total Flow at Node 101 0.41 CFS
Isopluviat Data:
P6= 2.5
P24= 4.0
P6/P24= 63%
Adjusted P6 = 2.5
203 0100=0.48c1s
200
202
Surface flow
Direction (ti')
5'IEE7 PiLE Proposed DrGl~G_qe DAlE 4-4-2018 I
1161 Chestnut Avenue, Ccu/sbcd CA 92008
John P. Strohmiger Engieerbig
C:\Users'lohn Strohmi ger\DropboEngineenng and Suiveying\Active Jobs\1161 Chestnut Avenue\Drtwtng Files 1161 ChestnutOrainage Proposed Condition.dwg, 4/4/2018 111046 FM
Post-Development Hydrology 1161 Chestnut Avenue, Carlsbad, Ca, 92008, April 3, 2018, John P. Strohminger Engineering
Nodes Incr. Total Soil Land C Incr. Total Flow Slope Over- Kirpich Manning Ic I QCIA Notes
Area Area Gp Use C*A C*A Path, % land Ti Ti mm. mm, in/hr Q, cfs.
ac. ac. ft. Ti, mm. cum.
mm
200-201 0.014 0.014 D R 4.3 0.35 0.005 0.005 5 5.0 6.59 0.03 Initial Ic 5 minutes mm
201-202 0.07 0.084 D R4.3 0.35 0.025 0.029 135 2.00 0.320 5.32 6.33 0.19 Cobble swale to front
202-203 0.089 0.173 D R 4.3 0.52 0.046 0.076 41 4.5 0.0148 5.33 6.32 0.48
Total Flow at Node 203 0.48 CFS
Isopluvial Data:
P6= 2.5 Adjusted P6 = 2.5
P24= 4.0
P6/P24= 63%
San Diego County Hydrology Manual Section: 3 Date: June 2003 Page: 6 of 26
Table 3-1
RUNOFF COEFFICIENTS FOR URBAN AREAS
Land Use I Runoff Coefficient "C"
Soil Type
NRCS Elements County Elements % IMPER. A B C D
Undisturbed Natural Terrain (Natural) Permanent Open Space 0* 0.20 0.25 0.30 0.35
Low Density Residential (LDR) Residential, 1.0 DU/A or less 10 0.27 0.32 0.36 0.41
Low Density Residential (LDR) Residential, 2.0 DU/A or less 20 0.34 0.38 0.42 0.46
Low Density Residential (LDR) Residential, 2.9 DU/A or less 25 0.38 0.41 0,45 0.49
Medium Density Residential (MDR) Residential, 4.3 DU/A or less 30 0.41 0.45 0,48
-
0.52-1
Medium Density Residential (MDR) Residential, 7.3 DU/A or less 40 0.48 0.51 0.54 0.57
Medium Density Residential (MDR) Residential, 10.9 DU/A or less 45 0.52 0.54 0.57 0.60
Medium Density Residential (MDR) Residential, 14.5 DU/A or less 50 0.55 0.58 0.60 0.63
High Density Residential (HDR) Residential, 24.0 DU/A or less 65 0.66 0,67 0.69 0.71
High Density Residential (HDR) Residential, 43.0 DU/A or less 80 0.76 0.77 0.38 0.79
Commercial/Industrial (N: Corn) Neighborhood Commercial 80 0.76 0.77 0.78 0.79
Commercial/Industrial (G. Corn) General Commercial 85 0.80 0.80 0.81 0.82
Commercial/Industrial (O.P. Corn) Office Professional/Commercial 90 0.83 0.84 0.84 0.85
Commercial/Industrial (Limited I.) Limited Industrial 90 0.83 0.84 0.84 0.85
Commercial/Industrial (General I.) General Industrial 95 0.87 0.87 0.87 0.87
*The values associated with 0% impervious may be used for direct calculation of the runoff coefficient as described in Section 3.1.2 (representing the pervious runoff 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 area is located in Cleveland National Forest).
DU/A = dwelling units per acre
NRCS = National Resources Conservation Service
3-6
COUNTY OF SAN DIEGO
DEPARTMENT OF SANITATION & t aJAH FLOOD CONTROL 100 YEA o-ruu
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. , Revised 1/85 APPENDIX )C1E
COUNTY OF SAN DIEGO
DEPARTMENT OF SANITATION . 100—YE1R 244101 R PRECIPITATION
FLOOD CONTROL
'20-.4S0PLUIJIALS OF 100 -YEAR 24-HOUR
PRECIPITATIOU RI 'EIITIIS OF AN INCH
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Revised ]/5 APPENDIX XLII
Directions for Application:
From precipitation maps determine 6 hr. and
24 hr. amounts for the selected frequency.
These maps are printed in the County Hydrology
Manual (10, 50 and 100 yr. maps included in the
Design and Procedure Manual).
Adjust 6 hr. precipitation (If necessary) so
that it Is within the range of 45% to 65% of
the 24 hr. precipitation. (Not applicable
to Desert)
Plot 6 hr. precipitation on the right side
of the chart.
Draw a line through the point parallel to the
plotted lines.
.5) This line Is the intensity-duration curve for
the location being analyzed.
Application Form:
0) Selected Frequency "' yr.
P6 fl _ 4 = __
P24
Adjusted *6 ______________in.
t= min.
I = t., in/hr.
*Not Applicable to Desert Region'
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1.0
INTENSITYDUM1,t DESIGN CHART
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Intensity
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10 15 20 30 40 50 1 2 3\ 4 5 :&
Minutes Hours' Revised 1/8$ APPENDIX XI-A
EQUATION: V = 1.49 R213 $112
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GENERAL SOLUTION
SOURCE: USD01, FHWA, HDS-3 (1961)
FIG U RE
Manning's Equation Nomograph
" 0207
It(
(City of STORM WATER STANDARDS Development Services
Carlsbad QUESTION NAI RE Land Development Engineering
1635 Faraday Avenue E-34 (760) 602.2750
www.carlsbadca.gov
INSTRUCTIONS:
To address post-development pollutants that may be generated from development projects, the cy requires that new
development and significant redevelopment priority projects incorporate Permanent Storm Water Best Management
Practices (BMPs) into the project design per Carlsbad BMP Design Manual (BMP Manual). To view the BMP Manual,
refer to the Engineering Standards (Volume 5).
This questionnaire must be completed by the applicant in advance of submitting for a development application
(subdivision, discretionary permits and/or construction permits). The results of the questionnaire determine the level of
storm water standards that must be applied to a proposed development or redevelopment project. Depending on the
outcome, your project will either be subject to 'STANDARD PROJECT' requirements or be subject to 'PRIORITY
DEVELOPMENT PROJECT' (PDP) requirements.
Your responses to the questionnaire represent an initial assessment of the proposed project conditions and impacts. City
staff has responsibility for making the final assessment after submission of the development application. If staff
determines that the questionnaire was incorrectly tilled out and is subject to more stringent storm water standards than
initially assessed by you, this will result in the return of the development application as incomplete. In this case, please
make the changes to the questionnaire and resubmit to the city.
If you are unsure about the meaning of a question or need help in determining how to respond to one or more of the
questions, please seek assistance from Land Development Engineering staff.
A completed and signed questionnaire must be submitted with each development project application. Only one
completed and signed questionnaire is required when multiple development applications for the same project are
submitted concurrently.
PROJECT INFORMATION
PROJECT NAME: 4,t4hit i2QSc.€ PROJECT ID:
ADDRESS: (V,\ 6o*1vt APN
The project is (check one): 'New Development 0 Redevelopment
The total proposed disturbed area is: ________ ft2 (0-1401 acres
The total proposed newly created and/or replaced impervious area is: 4,33 ft2 (12.00t''I) acres
If your project is covered by an approved SWQMP as part of a larger development project, provide the project ID and the
SWQMP # of the larger development project:
Project ID I'../\ SWQMP#:
Then, go to Step I and follow the instructions. When completed, sign the form at the end and submit this with your
application to the city.
E-34 Page 1 of 4 REV 02/16
STEP
TO BE COMPLETED FOR ALL PROJECTS
To determine if your project is a 'development project", please answer the following question:
YES NO
Is your project LIMITED TO routine maintenance activity and/or repair/improvements to an existing building
F_ or structure that do not alter the size (See Section 1.3 of the BMP Design Manual for guidance)?
If you answered yes" to the above question, provide justification below then go to Stop 5, mark the third box stating "my project is not a 'development project' and not subject to the requirements of the BMP manual" and complete applicant information.
Justification/discussion: (e.g. the project includes only interior remodels within an existing building):
If you answered "no" to the above question, the project is a 'development project', go to Step 2.
STEP 2
TO BE COMPLETED FOR ALL DEVELOPMENT PROJECTS
To determine if your project is exempt from PDP requirements pursuant to MS4 Permit Provision E.3.b.(3), please answer
the following questions:
Is your project LIMITED to one or more of the following:
YES NO 1. Constructing new or retrofitting paved sidewalks, bicycle lanes or trails that meet the following criteria:
Designed and constructed to direct storm water runoff to adjacent vegetated areas, or other non-
erodible permeable areas;
Designed and constructed to be hydraulically disconnected from paved streets or roads;
C) Designed and constructed with permeable pavements or surfaces in accordance with USEPA
Green Streets guidance?
2. Retrofitting or redeveloping existing paved alleys, streets, or roads that are designed and constructed in
accordance with the USEPA Green Streets guidance?
3. Ground Mounted Solar Array that meets the criteria provided in section 1.4.2 of the BMP manual? 0
If you answered "yes" to one or more of the above questions, provide discussion/justification below, then go to Step 5, mark
the second box stating "my project is EXEMPT from POP . .." and complete applicant information.
Discussion to justify exemption ( e.g. the project redeveloping existing road designed and constructed in accordance with
the USEPA Green Street guidance):
If you answered "no" to the above questions, your project is not exempt from PDP, go to Step 3.
E-34 Page 2 of 4 REV 04/17
STEP 3
TO BE COMPLETED FOR ALL NEW OR REDEVELOPMENT PROJECTS
To determine if your project is a PDP, please answer the following questions (MS4 Permit Provision E.3.b.(1)):
YES NO Is your project a new development that creates 10,000 square feet or more of impervious surfaces
- collectively over the entire project site? This includes commercial, industrial, residential, mixed-use, 0 and public development projects on public or private land.
Is your project a redevelopment project creating and/or replacing 5,000 square feet or more of
impervious surface collectively over the entire project site on an existing site of 10,000 square feet or
more of impervious surface? This includes commercial, industrial, residential, mixed-use, and public
development projects on public or private land.
Is your project a new or redevelopment project that creates and/or replaces 5,000 square feet or more
of impervious surface collectively over the entire project site and supports a restaurant? A restaurant is
a facility that sells prepared foods and drinks for consumption, including stationary lunch counters and 0 refreshment stands selling prepared foods and drinks for immediate consumption (Standard Industrial
Classification (SIC) code 5812).
Is your project a new or redevelopment project that creates 5,000 square feet or more of impervious
surface collectively over the entire project site and supports a hillside development project? A hillside 0 US development on_ any twenty-five _project _includes _development _natural _slope _that _is _percent_or_greater. Is your project a new or redevelopment project that creates and/or replaces 5,000 square feet or more
of impervious surface collectively over the entire project site and supports a parking lot? A parking lot is
a land area or facility for the temporary parking or storage of motor vehicles used personally for
business or for commerce.
Is your project a new or redevelopment project that creates and/or replaces 5,000 square feet or more
of impervious street, road, highway, freeway or driveway surface collectively over the entire project 0 P4 site? A street, road, highway, freeway or driveway is any paved impervious surface used for the
transportation of automobiles, other vehicles.
_trucks, _motorcycles, _and
Is your project a new or redevelopment project that creates and/or replaces 2,500 square feet or more
of impervious surface collectively over the entire site, and discharges directly to an Environmentally
Sensitive Area (ESA)? "Discharging Directly to" includes flow that is conveyed overland a distance of 0 200 feet or less from the project to the ESA, or conveyed in a pipe or open channel any distance as an
isolated flow from the project to the ESA (i.e. not commingled with flows from adjacent lands). *
Is your project a new development or redevelopment project that creates and/or replaces 5,000 square
feet or more of impervious surface that supports an automotive repair shop? An automotive repair 0 shop is a facility that is categorized in any one of the following Standard Industrial Classification (SIC)
codes: 5013, 5014, 5541, 7532-7534, or 7536-7539.
Is your project a new development or redevelopment project that creates and/or replaces 5,000 square
feet or more of impervious area that supports a retail gasoline outlet (RGO)? This category includes o RGO'S that meet the following criteria: (a) 5,000 square feet or more or (b) a project Average Daily
Traffic (AD 7) of 100 or more vehicles per day.
Is your project a new or redevelopment project that results in the disturbance of one or more acres of land El and are expected to generate pollutants post construction?
Is your project located within 200 feet of the Pacific Ocean and (1) creates 2,500 square feet or more of
impervious surface or (2) increases impervious surface on the property by more than 10%? (CMC 0 21.203.040)
If you answered "yes" to one or more of the above questions, your project is a PDP. If your project is a redevelopment
project, go to step 4. If your project is a new project, go to step 5, check the first box stating "My project is a PDP
and complete applicant information.
If you answered "no" to all of the above questions, your project is a 'STANDARD PROJECT.' Go to step 5, check the second box stating "My project is a 'STANDARD PROJECT'..." and complete applicant information.
E-34 Page 3 of 4 REV 04/17
STEP 4
TO BE COMPLETED FOR REDEVELOPMENT PROJECTS THAT ARE PRIORITY DEVELOPMENT PROJECTS (PDP)
ONLY Complete the questions below regarding your redevelopment project (MS4 Permit Provision E.3.b.(2)):
YES NO Does the redevelopment project result in the creation or replacement of impervious surface in an amount
of less than 50% of the surface area of the previously existing development? Complete the percent
impervious calculation below:
Existing impervious area (A) = sq. ft. 0 0
Total proposed newly created or replaced impervious area (B) = __________________________sq. ft.
Percent impervious area created or replaced (B/A)*100 =%
If you answered "yes", the structural BMPs required for POP apply only to the creation or replacement of impervious
surface and not the entire development. Go to step 5, check the first box stating "My project is a PDP ." and complete applicant information.
If you answered "no," the structural BMP's required for PDP apply to the entire development. Go to step 5, check the
check the first box stating "My project is a PDP ..." and complete applicant information.
STEP 5
CHECK THE APPROPRIATE BOX AND COMPLETE APPLICANT INFORMATION
O My project is a PDP and must comply with PDP stormwater requirements of the BMP Manual. I understand I must prepare a Storm Water Quality Management Plan (SWQMP) for submittal at time of application.
My project is a 'STANDARD PROJECT' OR EXEMPT from PDP and must only comply with 'STANDARD PROJECT' / stormwater requirements of the BMP Manual. As part of these requirements, I will submit a "Standard Project Requirement Checklist Form E-36" and incorporate low impact development strategies throughout my project.
Note: For projects that are close to meeting the POP threshold, staff may require detailed impervious area calculations
and exhibits to verify if 'STANDARD PROJECT' stormwater requirements apply.
O My Project is NOT a 'development project' and is not subject to the requirements of the BMP Manual.
Applicant Information and Signature Box
Applicant Name:'5i&Ht'J ErOHMtJj1t Applicant Title: VU- 144tf4ER
Applicant Signature:'JOI4'\ 1h}4/J1't Date: '4 - 4 ZC)t 0
Environmentally Sensitive Areas include but are not limited to an urean water AOt Seaion 503(C) impaired water wares; areas aesrgnatea as ireas or pecai Biological Significance by the State Water Resources Control Board (Water Quality Control Plan for the San Diego Basin (1994) and amendments); water bodies
designated with the RARE beneficial use by the State Water Resources Control Board (Water Quality Control Plan for the San Diego Basin (1994) and
amendments); areas designated as preserves or their equivalent under the Multi Species Conservation Program within the Cities and County of San Diego; Habita
t
Management Plan; and any other equivalent environmentally sensitive areas which have been identified by the City.
ThLc Re)x fnr C/tv 11 (in/v
City Concurrence:
YES NO
o o
By:
Date:
Project ID:
E-34 Page 4 of 4 REV 04/17
(City of
Carlsbad
STANDARD PROJECT
REQUIREMENT
CHECKLIST
E-36
Development Services
Land Development Engineering
1635 Faraday Avenue
(760) 602-2750
www.carlsbadca.gov
Project Information
Project Name: c 2i2 l:€2C
Project ID:
DWG No. or Building Permit No.:
Source Control BMPs
All development projects must implement source control BMPs SC-1 through SC-6 where applicable and feasible. See
Chapter 4 and Appendix E.1 of the BMP Design Manual (Volume 5 of City Engineering Standards) for information to
implement source control BMPs shown in this checklist.
Answer each category below pursuant to the following.
"Yes" means the project will implement the source control BMP as described in Chapter 4 and/or Appendix E.1 of the
Model BMP Design Manual. Discussion/justification is not required.
"No" means the BMP is applicable to the project but it is not feasible to implement. Discussioniustification must be
provided. Please add attachments if more space is needed.
o "N/A" means the BMP is not applicable at the project site because the project does not include the feature that is
addressed by the BMP (e.g., the project has no outdoor materials storage areas). Discussion/justification may be
provided.
Source Control Requirement Applied?
SC-1 Prevention of Illicit Discharges into the MS4 'Yes 1 0 No 0 N/A
Discussion/justification if SC-1 not implemented: /
SC-2 Storm Drain Stenciling or Sigriage 0 Yes 0 No IN/A
Discussion/justification if SC-2 not implemented:
SC-3 Protect Outdoor Materials Storage Areas from Rainfall, Run-On, Runoff, and Wind 0 Yes 0 No J "N/A Dispersal
Discussionfjustification if SC-3 not implemented:
E-36 Page 1 of 4 Revised 09/16
Source Control Requirement (continued) Applied?
SC-4 Protect Materials Stored in Outdoor Work Areas from Rainfall, Run-On, Runoff, and
Wind Dispersal Ye S No N/A
Discussionljustification if SC-4 not implemented:
SC-5 Protect Trash Storage Areas from Rainfall, Run-On, Runoff, and Wind Dispersal (Yes 0 No 0 N/A
Discussion/justification if SC-5 not implemented:
SC-6 Additional BMPs based on Potential Sources of Runoff Pollutants must answer for each source listed below and
identify additional BMPs. (See Table in Appendix E.1 of BM Manual for guidance).
On-site storm drain inlets 0 Yes 0 No N/A
Interior floor drains and elevator shaft sump pumps 0 Yes 0 No N/A
Interior parking garages 0 Yes 0 No N/A
Need for future indoor & structural pest control Yes 0 No 0 N/A
Landscape/Outdoor Pesticide Use $ Yes 0 No 0 N/A
Pools, spas, ponds, decorative fountains, and other water features 0 Yes 0 No N/A
Food service 0 Yes 0 No N/A
C3 Refuse areas Dd Yes 0 No 0 N/A
industrial processes 0 Yes 0 No N/A
C) Outdoor storage of equipment or materials 0 Yes 0 No N/A
Vehicle and Equipment Cleaning 0 Yes 0 No N/A
O Vehicle/Equipment Repair and Maintenance 0 Yes 0 No N/A
Fuel Dispensing Areas 0 Yes 0 No J N/A
Loading Docks 0 Yes 0 No 19 N/A
Fire Sprinkler Test Water Yes 0 No 0 N/A
Miscellaneous Drain or Wash Water 0 Yes 0 No
Plazas, sidewalks, and parking lots KYes 0 No 0 N/A
For "Yes" answers, identify the additional BMP per Appendix E. 1. Provide justification for "No' answers.
E-36 Page 2 of 4 Revised 09/16
Site Design BMPs
All development projects must implement site design BMPs SD-1 through SD-8 where applicable and feasible. See
Chapter 4 and Appendix E.2 thru E.6 of the BMP Design Manual (Volume 5 of City Engineering Standards) for information
to implement site design BMPs shown in this checklist.
Answer each category below pursuant to the following.
"Yes" means the project will implement the site design BMPs as described in Chapter 4 and/or Appendix E.2 thru E.6 of
the Model BMP Design Manual. Discussion/justification is not required.
"No" means the BMPs is applicable to the project but it is not feasible to implement. Discussion/justification must be
provided. Please add attachments if more space is needed.
"N/A" means the BMPs is not applicable at the project site because the project does not include the feature that is
addressed by the BMPs (e.g., the project site has no existing natural areas to conserve). Discussion/justification may be
provided.
Site Design Requirement Applied?
SD-1 Maintain Natural Drainage Pathways and Hydrologic Features 0 Yes I 0 No N/A
Discussion/justification if SD-1 not implemented: /
SD-2 Conserve Natural Areas, Soils, and Vegetation 0 Yes I 0 No I fiN/A
Discussion/justification if SD-2 not implemented:
SD-3 Minimize Impervious Area I YYes I 0 No I 0 N/A
Discussion/justification if SD-3 not implemented: /
SD-4 Minimize Soil Compaction I 2f Yes I 0 No 1 0 N/A
Discussion/justification if SD-4 not implemented:
'Yes SD-5 Impervious Area Dispersion I I 0 No I 0 N/A
Discussion/justification if SD-5 not implemented:
E-36 Page 3 of 4 Revised 09/16
Site Design Requirement (continued) Applied?
SD-6 Runoff Collection o Yes J XNo 0 N/A
Discussion/justification if SD-6 not implemented:
14 ?A 1d ~Vo
I
SD-7 Landscaping with Native or Drought Tolerant Species I Yes F -O No I 0 N/A
Discussionljustification if SD-7 not implemented:
SD-8 Harvesting and Using Precipitation I 0 Yes I ) No I 0 N/A
Discussion/justification if SD-8 not implemented:
~,~6(,DCiJJ +to 'Jo4a,
E-36 Page 4 of 4 Revised 09/16