HomeMy WebLinkAboutC25980 MOU Joint Aquisition of Orthophotography Letter CVAGContract No. C25980
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CITY OF PALM DESERT
FINANCE DEPARTMENT
STAFF REPORT
REQUEST: APPROVAL OF FUNDING IN AN AMOUNT NOT TO EXCEED
$30,000 FOR THE DEVELOPMENT AND ACQUISITION OF NEW
ORTHOPHOTOGRAPHY AND ELEVATION/CONTOUR DATA
USING CONTRACTS TO BE NEGOTIATED BY THE SANTA ANA
WATERSHED PROJECT AUTHORITY (SAWPA)
DATE: NOVEMBER 16, 2006
CONTENTS: MEMORANDUM OF UNDERSTANDING FOR FUNDING OF
JOINT ACQUISITION OF ORTHOPHOTOGRAPHY
LETTER AND ATTACHMENTS FROM COACHELLA VALLEY
ASSOCIATION OF GOVERNMENTS (CVAG)
Recommendation:
By Minute Motion, that the City Council:
1. approve funding in the amount not to exceed $30,000 for the
development and acquisition of new orthophotogaphy and optional
elevation/contour data using contracts to be negotiated by the Santa
Ana Watershed Project Authority (SAWPA); and
2. appropriate fifty percent (50%) of said funds from Account No. 110-
4300-413-3090, and fifty percent (50%) from Account No. 110-4190-
415-3090.
Background:
The Southern California GIS Council (SCGC) and the City of Palm Desert have
determined a need to update it Geographic Information Systems (GIS) with new
orthography of Riverside and San Bernardino counties. Santa Ana Watershed Project
Authority (SAWPA) has been designated as SCGC's contract administrator, and will
negotiate and execute the contracts on behalf of SCGC. SAWPA will work to acquire
GIS data sets including high quality digital photographs to support regional planning
efforts in the SAWPA and will issue an RFP and participate in the review of proposals
submitted.
Staff Report
Approval of Funding for Orthophotography
November 16, 2006
Page 2 of 2
Information obtained through this process would be of great benefit to both the Public
Works and Information Systems departments. Therefore, funding would be provided
equally from Public Works Account No. 110-4300-413-3090 and Information Systems
Account No. 110-4190-415-3090 in an amount not to exceed a total of $30,000.
Section 3 of the attached MOU states that it should be signed by December 15, 2006.
Funds should be provided to SAWPA no later than January 1, 2007, in order to remain
in compliance with the terms of the memorandum. Staff requests that City Council
approve the funding for the project in the amount of $30,000.
Submitted by:
F)gul S. Gibson
Director of Finance/City Treasurer
Mark Greenwood
Director of Public Works
Approval:
Carlos L. Orteg
City Manager
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Contract No. C25980
Memorandum of Understanding for Funding of Joint Acquisition of Orthophotography
This Memorandum of Understanding ("MOU") is entered into between Southeastern
California G1S Council ("SCGC") and Citv of Palm Desert ("Stakeholder"), for the
purpose of providing funding for the development and acquisition of new
orthophotography and optional elevation/contour data ("SCGC Project") using contract(s)
to be negotiated and executed by SCGC's Contract Administrator, the Santa Ana
Watershed Project Authority ("SAWPA").
Recitals
A. WHEREAS, Stakeholder has a need to update its Geographic Information
Systems with new orthophotography of specific areas of Riverside and/or San Bernardino
Counties; and
B. WHEREAS, the areas of interest for the Stakeholder are often adjacent and
sometimes overlapping with other Stakeholders; and
C. WHEREAS, by partnering together with other Stakeholders on this SCGS
Project, the costs per Stakeholder should be significantly less than acquiring
orthophotography for each Stakeholder separately; and
D. WHEREAS, SCGC has entered into an agreement with SAWPA designating
SAWPA as the contract administrator for the benefit of SCGC to perform services as directed
and agreed to by SAWPA and SCGC, including entering into contracts, administration and
facilitation of the Santa Ana River Watershed -wide work to acquire geographic information
systems data sets including high quality digital photographs to support the regional planning
efforts in the Santa Ana River Watershed; and
E. WHEREAS, the SCGC agrees to participate, by and through SAWPA, in the
issuance of a single Request for Proposal ("RFP") and in the review of the proposals
submitted in response to this RFP; and
F. WHEREAS, SCGC, by and through SAWPA, will agree on the selection of
one (or more) winning firm to provide the orthophotography products and services for the
benefit of all participating Stakeholders; and
G. WHEREAS, Stakeholder and SCGC have agreed to have SAWPA act as the
lead agency for the procurement of the orthophotography and optional elevation/contour
data.
NOW, THEREFORE, the Stakeholder by signing the attached signature authorization
page and imagery specification attachment agrees as follows:
Section 1. (a) Stakeholder shall provide a technical representative to participate in
SCGC Stakeholder meetings when appropriate and necessary, (b) expeditiously commit
Contract no. C25980
funds in the amount shown below and on the attachment, (c) transfer the full amount of the
funds to SAWPA, as SCGC's Contract Administrator, on or before January 1, 2007. The
level of funding required is predicated on several parameters unique to each Stakeholder,
including, without limitation, the number of square miles of imagery to be provided to the
individual Stakeholder, the imagery resolution required by the Stakeholder, and the election
of optional elevation/contour data sets, and/or additional projections/spectral options.
Section 2. Stakeholder shall deposit with SAWPA funds in the amount of
$30,000. SAWPA will establish and maintain a separate interest bearing account for all
funds deposited by all Stakeholders for the use on the SCGC Project. These funds will be
used for the payment to the contractor(s) for the SCGC Project, SCGC-directed Project
Management by SAWPA, the Project Manager hired by SAWPA to manage all technical and
procurement processes on behalf of the Stakeholders, and for SAWPA's expenses (i.e.,
salary, burden, overhead and cost of materials) incurred for work performed by SAWPA in
connection with the SCGC Project. The Project Manager will report to the SCGC Co -Chair
("Task Manager") and to Jeffrey Beehler at SAWPA.
Section 3. This MOU and its Attachment are a critical part of the procurement
process for the SCGC Project, and should be signed by all Stakeholders by December 15,
2006. By signing this MOU, Stakeholder agrees to deposit the funds referenced in Section 2
above on or before January 1, 2007. Estimated contract award date is January 15, 2007. A
copy of the Stakeholder -signed MOU and MOU Attachment should be faxed or emailed to
Resource Strategies Inc. The original signed MOU and funds should be mailed to Jeffery
Beehler at Santa Ana Watershed Project Authority.
MOU and Associated Funds Commitment Accepted and Authorized by:
Authorized Officer for Stakeholder
Agreement Acceptance
SCGC Contract Administrator:
Signature, Date and Name of Stakeholder
Signature, Date Kevin Viera, SCGC's Co -Chair
Jeffery Beehler Ph.D.
Santa Ana Watershed Project Authority
11615 Sterling Avenue
Riverside, CA 92503
Tel: 951 354-4220
i beeh l er0)sawpa. ors;
SCGC Co -Chair and Project Task
Manager:
SAWPA Project Manager:
Richard Schulman
Kevin Vicra Resource Strategies Inc
Contract No. C25980
cio Western Riverside COG
4080 Lemon Street, 3I'd Floor MS 1032
Riverside, CA 92501
Tel: 951 955-7985
viera(c(wrcog.cog.ca.us
4809 Clairemont Square 4340
San Diego, CA 92117
Tel: 858 581-6682 Fax: 858 581-6683
resourcestrategies@)usa.net
3
Attachment to MOU (Fax Completed Document to 858 581-6683, R Schulman)
Confirm Fax Sent by email msg to: vicra(cz-wrcoiy.coij.or(_, and resourecstrat�ies(a'usa.net
Agency: City of Palm Desert Date: October 30,2006 MOU Commitment: $20.000-
$30.000
The 1" Quarter 2007 Aerial Imagery Acquisition Specifications for Our Agency:
Circle One Selection or Fill in Blank for Each Line Below:
1. Resolution - Min Acceptable: 1 foot/pix 6 inches/pixel 4 inches/pix 3 inches/pix
2. Resolution - Desirable: 1 foot/pixel 6 inches/pixel 4 inches/pix 3 inches/pix
3. Scope - Required Minimum Square Miles (e.g. Agency Boundary) 100- (which
includes mountain areas for trails); however city boundary is 27 SciMiles
4. Scope - Desired Square Miles (Sphere of Interest - SOI ) 230 (510-Coachella Valley)
5. Horizontal Accuracy Acceptable - Within: 30 Feet 10 Feet 3 Feet
6. Horizontal Accuracy Desired - Within: 30 Feet 10 Feet 3 Feet
Note: Does your agency have a certified ground control set for your SOI. YES
7. Contour Extraction (Addn'l Not Needed Next Year Now
8. If Contours Extracted Min Acceptable 5 Foot 4 Foot 2 Foot 1 Foot
9. Imagery Spectrum Color (Default), Add: IR (Addn'l $$$) Panchromatic (Addn'l $)
10. Format: GeoTiffs (Default), Add: ECW SID PhotoMapper JPEG2000
11. Projection/Datum, State Plane, NAD83 Zone 5 San Bernardino, Zone 6 Riverside
Other Projection Required (Addn'l $$): UTM 11 83 UTM 11 27 Lat/Long 83
12. Shape Files for Agency Boundary and for Desired Area of Interest (Sphere)
Note: Email files to: resourcestrate..,ies(a?usa.net Specify Shape Projection/Datum
13. Additional Comments/Requirements: Although Palm Desert City Boundary is 27
Square Miles we have obtained surrounding areas in our ortho-photographv moiects in
the past so that trail planning and development planning can be accomplished which
would at a minimum encompass anoroximately an area of 230 Sq Miles.
Questions Regarding this Attachment or MOU: Call SCGC Project Manager, Richard
Schulman, Resource Strategies Inc, 858 581-6682 or email: resourcestrategies(ci:tisa.net
This attachment must be signed and dated by the Agency's GIS or IS Manager or
Coordinator. The MOU must be signed and dated by an authorized officer of the Agency.
Signature Date
Print Name Telephone Email
ATTACHMENT "A"
««««< PROJECT SPECIFICATIONS »»»»»
Photography:
IntraSearch will fly the project area using an aircraft equipped with a precision -calibrated
mapping camera at a scale of 1:9600 or 1" = 800' for the '/Z foot. This photography will be
flown in stereo with 60% forward overlap. Your requested area of coverage will require 33
flight lines and approximately 1066 exposures. .
Survey:
Approximately 120 ground locations will be photo -identified upon completion of the aerial
photography. At that point, our GPS team will mobilize to the project area to acquire the GPS
ground control points required for the analytics (described below).
Technical Processes
Analytical Aerotriangulation:
The x,y,z control points will be used along with the camera calibration report to
acquire the exterior orientation of the scanned images by running them through
the VirtuoZo AAT package and utilizing PATB aerial triangulation software.
These exterior orientations will be used for geo-referencing the scans in the
VirtuZo 3.3 software.
Analytical triangulation is a mathematical simultaneous solution of specific
points (pass points) marked within overlapping (stereo) photographic images. It
is an interpolation process allowing field control to span several uncontrolled
stereo models. The solution process determines the precise camera positions
and orientation parameters for each photo as well as ground coordinates for
each pass -point. The process not only corrects image displacement caused by
earth curvature, atmospheric refraction, and camera lens distortion, but also
increases the number of ground control points available for the orthophoto
production. IntraSearch's in-house analytical triangulation process utilizes a
Wild Zoom Pug-4 point transfer device to mark the photos. A precision first -
order Datum/IMA digital stereoplotter using AP-32 measurement collection
software, Albany bundle adjustment software, experienced photogrammetric
personnel complete the accurate process of expanding field control.
Film Scanning:
All scanning will be performed with a Vexcel HT-4000 Photogrammetric Image
Scanning System (serial # 0498VIC132-002). Aerial negatives will be scanned
to include all fiducials and saved in a Tiff format. Real-time dodging software on
the scanner ensures continuous density and contrast matching from image to
image. Each negative will be scanned to a pixel resolution of six inches for the
Core Area.
Soft Copy Ortho Photo Generation:
All required models will be run through VirtuoZo 3.5 NT softcopy software to
generate the ortho-photography.
The scanned tiff files will be imported into Supresoft Inc.Version 3.5 VirtuoZo
NT softcopy software. The exterior orientation will be imported from the
VirtuoZo AATM software which allows the operators to go straight to the DEM
edit stage. A DEM is generated automatically by the VirtuoZo software based
on the exterior orientation and the automatic process of matching hundreds of
match points between the images in the stereo model. The operator then views
the DEM in stereo using NuVision 60 GX glasses. In this process the operator
views the DEM grid on top of the stereo image and adjusts the DEM to the
stereo view. This insures that the DEM matches the terrain so that the ortho
image will be distortion free and accurate to the project specifications. Once the
DEM has been edited and created, the ortho image is then generated for the
model.
A cubic convolution resampling method is used for this process. Cubic
convolution determines the color level from the weighted average of the 16
closest pixels to the specified input coordinates and assigns that value to the
output coordinates. This method not only produces the most accurate image
but also yields a sharper image than other methods such as nearest neighbor
or bilinear interpolation.
Balancing of Ortho Photography
Following ortho rectification, the individual exposures will be balanced using ER
Mapper V6.2 Software. This process is designed to correct shifts in brightness
or tone within individual images and will normalize the contrast of all images to
a common level. The shifts in brightness or intensity across images are usually
results of sun angle and problems due to lens refractions. This process is
designed to minimize vignetting (hot spots), haze and linear brightness shifts.
A designated exposure will be selected as a standard for maintaining the
desired color balance and density. An algorithm will be generated and a batch
process initiated to balance all individual exposures to the selected standard.
This process includes a technique called histogram matching. This technique
matches the output histograms for all images to one image, which was chosen
as the reference image.
Mosaic Ortho Photography
Upon completion of color balancing, all exposures will be composited utilizing
the ER Mapper V6.2 software. Images will be automatically composited into a
seamless digital file.
Final Tonal Blending and Final Aesthetic Quality Control
Post processing techniques will be used during the final blending stage. Small
color tonal and density flaws will be corrected during this production stage. All
composited imagery will receive a final inspection for aesthetic quality to insure
there are no visible seam lines or density issues.
Quality Control Procedure for Image Accuracy
Technicians will be using post -processing techniques to inspect the composite
for accuracy. Evenly spaced control points will be selected throughout the
composite and checked for accuracy. Areas not meeting the specifications will
be reprocessed and composited. Accuracies for the deliverable imagery are
expected to be +/- two feet (X,Y) for the six inch pixel Core Area.
Tiling Images
The orthorectified GeoTiff files will be tiled per your specifications. MrSid or
ECW compression is also available.
Projection: California State Plane Nad 83 (or as otherwise specified)
Awl
Em Ar NOAF%i
A -
Coachella_ Valleys Data Consortiurn
Aerial, PhotogFa.phy Program; 2005,
112 Foot Ortho Coverage
GPS Ground Control
_ 1 and 112 Foot Color Ortho - USGS 7.5 Minute
Quadrangle Controlled (outside red boundary)
710 Sq. Miles
Torres Martinez area - 200 sq miles (28%)