HomeMy WebLinkAboutEA 13-03; 6608 NW Quadrant Storm Drain Program; Administrative Permits (ADMIN)cU 01-r , V7wr u 1l 1 I ~-o ;, 0
(~I) CITY OF
~CARLSBAD FILE COPY
Memorandum
July 29, 2013
To: Sherri Howard, Associate Engineer
From:(,D • Pam Drew, Associate Planner
Via ~Dave de Cordova, Principal Planner .
Re: EA 13-03-NORTHWEST QUADRANT STORM DRAIN PROGRAM-GRAND AVENUE
Thank you for submitting an Early Assessment to install and repair/replace the storm drain pipe and
appurtenances at Grand Avenue, which starts approximately 150 feet east of the intersection with
Madison Street and connects to the twin 48 inch pipes at the State Street alley. Per RBF Consulting, in
their Hydrology and Hydraulics Report, dated March 8, 2013, the piping is undersized which results in
flooding in this area. No new impervious surface is proposed with this project. The increased pipe will
not result in an enlargement or expansion of the stormwater capacity in this area.
The proposed project includes the following pipe and appurtenances:
• Install 850 lineal feet of 48-inch reinforced concrete storm drain pipe
• Install 280 lineal feet of 36-inch reinforced concrete storm drain pipe
• Install 80 lineal feet of 18-inch reinforced concrete storm drain pipe
• Install five (5) curb inlets
• Install six (6) storm drain clean outs
• Resurface trench areas
• Remove and replace 200 square feet of sidewalk
• Relocate potable water system including water main and fire hydrant
• Install bio-retention cells
• Remove and replace approximately nine trees
In response to your application, the Planning Division has prepared this comment letter. Please note
that the purpose of an Early Assessment is to provide you with direction and comments on the overall
concept of your project. This Early Assessment does not represent an in-depth analysis of your
project. It is intended to give you feedback on critical issues based upon the information provided in
your submittal. This review is based upon the plans, policies, and standards in effect as of the date of
this review. Please be aware that at the time of a formal application submittal, new plans. policies,
and standards may be in effect and additional issues of concern may be raised through a more specific
and detailed review.
Planning:
General
1. The project will not need any permits from Planning; however, the project must comply with C.M.C.
Chapter 8.48-Noise, which regulates permitted hours for construction.
Community & Economic Development
1635 Faraday Ave. I Carlsbad, CA 92008 I 760-602-2710 I 760-602-8560 fax
EA 13-03 :-NORTHWEST QUA .. NT STORM DRAIN PROGRAM-GRAND INUE
July•29, iln' '"' ; '
Pa e 2
2. The project is exempt from environmental review per CEQA Guidelines Section 15302{c), concerning
replacement or reconstruction of existing facilities involving negligible or no expansion of capacity.
3. Street trees are an important feature in the Village area and should be protected in place as much as
possible.
4. Please coordinate construction activities with the city's consultant Urban Place.
Land Development Engineering:
5. Separate comments were previously submitted to you.
If you would like to schedule a meeting to discuss this letter with your staff planner, please contact Pam
Drew, Associate Planner at ext. 4644, or your staff engineer, Glen Van Peski, Engineering Manager at
ext. 2783.
DD:PD:bd
c: Don Neu, City Planner
Bill Plummer, Engineering Manager
Scott Donnell, Senior Planner
File Copy
Data Entry
DATE:
PROJECT NO(S):
PROJECT TITLE:
APPLICANT:
TO:
JUNE 17, 2013
CITY OF CARLSBAD
REVIEW AND COMMENT MEMO
EA 13-03 REVIEW NO: ~~~~--------------------------------
6608 NW QUADRANT DRAIN PROGRAM GRAND AVENUE
CITY OF CARLSBAD/BILL PLUMMER
1
IZJ Land Development Engineering 0 Public Works (Storm Drain)-Clayton Dobbs
D Public Works (Wastewater) -Don Wasko
D Public Works (Water)-Jase Warner
0 Police Department-J. Sa sway
0 Fire Department -Greg Ryan
0 Building Division-Will Foss 0 Water/Sewer District
0 Parks & Recreation (Parks/Trails)-Liz Ketabian
0 Parks & Recreation (Trees & Medians)-Mike Bliss
0 Public Works Department (Streets)-Nick Roque
0 Public Works Department (Traffic)-John Kim
0 Public Works Department {Design)-Bill Plummer
*ALWAYS SEND EXHIBITS
FROM: PLANNING DIVISION
D Landscape Plancheck Consultant-PELA
D School District
0 North County Transit District-Planning Dept.
0 Sempra Energy-Land Management
0 Caltrans {Send anything adjacent to 1-5)
Please review and submit written comments and/or conditions to the PLANNING TRACKING DESK in the
Planning Division at 1635 Faraday Avenue, by 7/5/13. If you have "No Comments," please so state. If you
determine that there are items that need to be submitted to deem the application "complete" for
processing, please immediately contact the applicant and/or their representatives (via phone or e-mail} to
let them know.
Thank you
COMMENTS:
PLANS ATIACHED
Review & Comment
~xdJ; Signa ure
03/13
CONSULTING
A-Company
RBF Consulting
5050 Avenida Encinas
Carlsbad, CA 92008
To: Sherri Howard
City of Carlsbad
1635 Faraday Avenue
Carlsbad, CA 92008
June 3, 2013
Carlsbad NW Quadrant-Grand Avenue-30% Submittal Discussion Items
General
The plans show that several existing traffic loops will be impacted by the proposed improvements. It is
our understanding that some of the signals (Roosevelt Street for example) have video detection and no
longer require the existing traffic loops. Please confirm which of the loops are currently in use so that
we can clarify on the plans which loops require replacement.
There are several apparent discrepancies between the linework in the topo file from the City and the
utility mark-outs, particularly as it relates to water lines and water valves. Additional potholes are
recommended in order to more accurately identify the horizontal location of the water line (Round 2
pothole exhibit forthcoming).
Please let us know exactly which water valve and service relocations the City would like us to show on
our plans.
Please confirm that the City would prefer to abandon the existing storm drain system (as opposed to
utilizing it in addition to the proposed improvements). We previously provided an analysis and
recommendation that the existing system be abandoned since utilizing it would not result in any cost
savings.
Sheet 4
After a detailed analysis of the pothole information, it is clear that the current proposed alignment will
require some significant utility relocations as well as a new junction structure. There is not sufficient
room between the existing 10" ACP water and the electric vault for the proposed pipe. The plans
currently call for the relocation of the water with the assumption that the pipe will be built as close to
the electric vault as possible to minimize the length of the water relocation. An additional alternative
alignment has also been shown on the plan for the City's consideration. The newly suggested
alternative alignment would cross over to the north side of Grand Avenue through the State Street
intersection. The alternative system would connect to the existing system at the existing junction
structure. The intent would be to utilize the existing junction structure. This alternative alignment
would have the added benefit of avoiding the numerous electric lines near the connection point on the
south side of the street. Relocation of a portion of the 10" ACP water would still be required with the
alternative alignment, but the limits of the relocation would be less than the original proposed
alignment. However, this alternative has a possible conflict with the abandoned 36" interceptor sewer
(see below for additional discussion).
Additional information is needed regarding the tie-ins of the existing 18" RCP (from the east) and 15"
RCP (from the west) to the existing dual 48" RCP.
The topo file we received from the City makes note of an abandoned 36" interceptor sewer running
down the north side of Grand Avenue. We have not been able to find any as-builts for the system on
the City website. Additional potholes are recommended, particularly if the City is interested in the
alternative alignment discussed above (which crosses over to the north side of Grand Avenue).
Sheet 5
There are several gas laterals near station 11+40 that were not included in the first round of potholes.
The profile shows these with assumed depths based on the pothole information for similar utilities. We
recommend that these be included in the next round of potholes.
At each of the pop-outs near the intersections with Roosevelt Street and Madison Street, the distance
between the existing gutter and the proposed pipe is reduced to only about 1-2'. In order to construct
the pipe in that location, the curb and gutter will likely need to be removed and replaced (approx. STA
8+10 to 8+50, 9+10 to 9+70, 11+70 to 12+20, and 12+90 to 13+50). Removal and replacement in those
isolated locations is considered preferable over the alternative, which would be to move the proposed
pipe further from the existing gutter and replace significant portions of the existing 10" water main.
Sheet 6
Although the majority of the utility relocations are near the downstream end of the proposed system,
there is one location on Sheet 6 where the proposed storm drain pipe crosses between an existing 8"
VCP sewer and an existing 12" PVC water. There is not sufficient room for the 36" pipe (with a typical
RCP thickness) between the services. The plans call for the relocation of the water line.
Summary of Action Items
The following is a summary of action items. We would be happy to discuss these in more detail at your
convenience.
City of Carlsbad (to be completed in conjunction with 30% submittal review by 6/24)
• Identify water valves and services for relocation
• Identify which traffic loops are still active and require replacement
• Confirm the abandonment of the existing storm drain system
• Determine if the newly suggested alternative alignment is preferable
• Provide any additional information regarding the location of the abandoned 36" interceptor
sewer
RBF (to be completed by 6/10)
• Provide exhibit with suggest locations for 2"d round of potholing
•
CONSULTING
Carlsbad Northwest Quadrant Drainage Improvements
CITY OF CARLSBAD
30% Cost Estimate -Grand Avenue
June 3, 2013
General
Grand Avenue
Total
TBD
$674,143
$674,143
5050 Avenida Encinas, Suite 260, Carlsbad, California 92008 #760.476.9193 # FAX 760.476.9198
Offices located throughout California, Arizona Nevada • www.RBF.com
RBF JN: 133979
1 of 3
H:\PDATA\133979\Calcs\Cost Estimates\Grand Ave 30% Cost Estimate.xls
General
ITEM
NO. DESCRIPTION QUANTITY
1 Mobilization 1
2 Trench dewatering (project-wide) 1
3 Storm Drain Pollution Control 1
4 Potholing and Utility Coordination 1
Subtotal
•
UNIT
UNITS PRICE
LS TBD
LS TBD
LS TBD
LS TBD
RBF JN: 133979
2 of3
AMOUNT
TBD
TBD
TBD
TBD
TBD
Grand Avenue
ITEM
NO.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
UNIT
DESCRIPTION QUANTITY UNITS PRICE
48" RCP Storm Drain Pipe 850 LF $230.00
36" RCP Storm Drain Pipe 280 LF $188.50
18" RCP Storm Drain Pipe 80 LF $123.50
Type B Curb Inlet (SDRSD D-2) 4 EA $6,160.00
Type A Curb Inlet (SDRSD D-21_ 1 EA $6,160.00
Type 85 Storm Drain Cleanout (SDRSD D-9) 4 EA $7,200.00
Type A4 Storm Drain Cleanout (SDRSD D-9) 1 EA $6,368.00
Trench Resurfacing, Per SDG-107&108 1,200 LF $41.25
Trench Shoring (up to 1 0') 1,200 LF $14.34
Modified Type B Cleanout 1 EA $14,400.00
Demo Existing Curb & Gutter 400 LF $3.30
6" Curb & Gutter (SDRSD G-2) 400 LF $22.00
Sidewalk Removal and Disposal 175 SF $2.01
Sidewalk 175 SF $8.00
Tree Protection/Relocation 15 EA $300.00
Connect to Existing Storm Drain 4 EA $320.00
Sign Relocation 1 EA $500.00
Utility Relocation-Water Main (4) 1 EA $50,000.00
Replace Signing and Striping 1 LS $1,000.00
Fire Hydrant Relocation 1 EA $3,190.00
Demo and Remove SO Inlet 4 EA $4,000.00
Replace Traffic Detector Loop 3 EA $544.50
Allowance for Construction of Bioretention Cells 600 SF $45.00
Demo and Remove Existing SO Pipe 60 LF $50.00
Demo and Remove Existing SO Manhole 1 EA $3,500.00
Replace Decorative Pavers 140 LF $30.00
Traffic Control 1 LS $53,300.00
Subtotal
15% Contingency
Estimated Total Bid
5050 Avenida Encinas, Suite 260, Carlsbad, California 92008 #760.476.9193 # FAX 760.476.9198
Offices located throughout California, Arizona Nevada • www.RBF.com
AMOUNT
$195,500.00
$52,780.00
$9,880.00
$24,640.00
$6,160.00
$28,800.00
$6,368.00
$49,500.00
$17,208.00
$14,400.00
$1,320.00
$8,800.00
$351.75
$1,400.00
$4,500.00
$1,280.00
$500.00
$50,000.00
$1,000.00
$3,190.00
$16,000.00
$1,633.50
$27,000.00
$3,000.00
$3,500.00
$4,200.00
$53,300.00
$586,211.25
$87,931.69
$674,142.94
H:\PDATA\133979\Calcs\Cost Estimates\Grand Ave 30% Cost Estimate.xls
Notes and Assumptions
1) Water valves are assumed funded through other financial mechanism
RBF JN: 133979
3 of 3
2) No additional surface improvements beyond trench restoration and curb reconstruction (i.e. general surface overlay) is
included
3) Relocation of Gas, Telephone, or other Dry Utilities assumed to be the financial responsibility of others
5050 Avenida Encinas, Suite 260, Carlsbad, California 92008 #760.476.9193 # FAX 760.476.9198
Offices located throughout California, Arizona Nevada • www.RBF.com
H:\PDATA\133979\Calcs\Cost Estimates\Grand Ave 30% Cost Estimate.xls
PLANNING DEPARTMENT
APPLICATION FORM FOR
EARLY ASSESSMENT BY THE SPECIAL PROJECTS TEAM
PROJECT PROPONENT/DEPT CONTACT
SIGNATURE:
DEPUTY PUBLIC WORKS DIRECTOR
SIGNATU
Please type your responses in the boxes provided below. The form may be expanded to accommodate as much
. fi . h "d m ormation as you c oose to provt e.
PROJECT NAME/TITLE:
6608 NORTHWEST QUADRANT STORM DRAIN PROGRAM-GRAND A VENUE
Have you submitted any previous early assessment applications for this project with Planning staff? If so, please attach a
copy of the original request and the Planning Department's response.
No
Is the project part of an approved CIP budget or a future CIP budget? If so, please provide the CIP Project #.
Yes-6608
List any previous and/or anticipated future Planning Commission or City Council actions (e.g., permit approvals, activity
authorizations, etc.) related to this project.
Authorization to Bid and Award of Contract
List any previously certified environmental documents (e.g., EIRs, Negative Declarations).
Not for this project
List any technical studies that have been prepared or that you anticipate will be prepared (e.g., biology, archeology, traffic,
noise, etc.).
Hydrology and Hydraulic Analysis
Is the project on City property? If not, has property owner authorization or an easement been secured?
Yes, it is within City public right ofway
Identify the project location. Include specific parcel numbers if possible.
Grand avenue between State Street Alley and Jefferson Street within the public street right of way for Grand Avenue
Identify the project schedule. List critical and desired milestones including dates in the development review and
construction process (e.g., public hearing dates, grant application submittal deadlines, public workshops, construction
phasing, etc.).
February 2012 -Initiate project design RECEIVED
November 2013-Finalize project design JUN 1 ~ ?"~1 December 2013 -Authorization to Bid Project to City Council
December to March 2014-Bid Project CITY OF CARLSBAD
April 2014-Award project PLANNING 01\/iStON
May 2014 -NTP for project construction
June 2014 to October 2014-Project Construction
Early Assessment For City Projects-Revised 1/3/11 Page 2 of3
DESCRIPTION OF PROPOSAL-Describe the project in as much detail as possible. Use as much space as needed.
Attach additional sheets (drawings, etc.) if necessary. Be sure to identify, if applicable, estimated quantities of grading
(including import/export), construction staging areas on and offsite, areas of sensitive vegetation, unique construction
technologies, proposed facility technologies and byproducts, and any public art component. If preliminary or conceptual
plans or exhibits are available, please include two sets with this transmittal.
Grand Avenue has flooded historically during storm events. Some of the flooding blocks driveways and sidewalks and
could flood buildings. This project will improve the drainage in the general Grand A venue area by conveying storm water
in an appropriately sized pipeline.
The existing pipeline is undersized. It is also located under the sidewalk and under landscape planters. Removing and
replacing the existing storm drain pipeline in the same location is not feasible due to utility conflicts. The result of the
hydrology and hydraulics report indicated that the pipeline needs to be 48-inch diameter. The existing undersized pipeline
is 15-inch diameter. The new pipeline will be constructed using open trench construction techniques.
The project includes the construction of the following improvements:
• 850 linear feet of 48-inch reinforced concrete storm drain pipeline
• 280 lineal feet of36-inch reinforced concrete storm drain pipeline
• 80 lineal feet of 18-inch reinforced concrete storm drain pipeline
• 5 curb inlets
• 6 storm drain clean outs
• Trench resurfacing both asphaltic cement and pavers
• 200 square feet of sidewalk removal and replacement
• Potable water system relocations including water main and fire hydrant
• Installation of bioretention cells
Early Assessment For City Projects -Revised 113111 Page 3 of3