|
| |
Navy Broadway Complex on the Waterfront of San Diego Bay.
The subject is seismicity is very technical. The difficult nature of the problem
requires guidance from world renown experts that have already dealt with the
same Coronado fault in 2005 and 2006 as part of the Coronado Tunnel Technical
Advisory Panel (TAP). For the first TAP panel,
information exchange was done by email, teleconferencing, and one meeting with
all stakeholders.
January 10, 2007
To the City of San Diego, City Council Members, Office of the Mayor, Office of
the City Attorney, CCDC, and Port of San Diego.
Subject: Solution to Outstanding
Geologic and Seismic Issues, Navy Broadway Complex, Downtown San Diego,
California
Reference: Appeal to the CEQA Consistency Analysis, January 9, 2007.
<http://www.laplayaheritage.com/Documents/CITY%20OF%20SAN%20DIEGO/NBC_Appeal_Presentation_20070109.pdf>
Dear City Council:
We are asking for your help in assuring that the Navy Building will not break
ground in June 2007 (less than 6 months away) without a valid fault
investigation. The Navy Building is the first building to be built. According to
the lease, Manchester will “develop, design, fully fund, construct, up-fit and
deliver to Government on or before June 27, 2009” the Navy Headquarter Building.
As discussed by Bill Cooper the aide the Representative Duncan Hunter, the new
Navy headquarters should be part of the Federal Incident Management Plan for
Domestic Emergencies. It should be a building to conduct Federal Activities
during major Disaster, civil emergencies, crises management, and technical
assistance. During a civil emergency, like an earthquake on the Rose
Canyon Fault Zone, we want the new Navy Building to be secure so they can
protect us. Right now it is looking like the Navy is going ahead with plans to
start construction without a valid fault investigation.
Following the lead from the City of Coronado with respect to the same active
Coronado fault traversing their tunnel project, please form a Technical Advisory
Panel (TAP) with CCDC, and the Port of San Diego. The panel should consist of
geologic and seismic experts, and concerned citizens such as ourselves. Dr.
Hartsell went to graduate school at Caltech and Berkeley in Engineering and
Applied Physics before becoming an orthopedic surgeon. Ms. Rhodes is a Civil
Engineering registered in the State of California, with over 20 years of
construction experience. We are willing to work for free and volunteer our time.
As the regional experts know the magnitude and direction of the Coronado fault,
the membership of the new TAP can be the same as for the 2006 Coronado Tunnel
project. After addressing the proposed new Navy Buildings, the TAP may come up
with guidelines for fault investigations in the North Embarcadero area including
the rest of the Navy Broadway Complex, the Old Police Station, and Lane Field
Redevelopment.
That said, we are disappointed with your decision to not uphold our appeal of
the Navy Broadway Complex due to outstanding seismic issues which include the
high probability that active faulting lies below the
project in the exact location were high-rise structures are founded on
liquefiable soils. Attached, please find figures showing the active faults,
anticlines, or anomalies overlaid on the proposed Pacific Gateway Development
Site. Note the location of the largest possible faults are directly through the
Navy Building, 400 foot high Hotel, and office buildings. On the day you voted
to not require an EIR-level fault investigation under CEQA, the rest of Southern
California was remembering that the 150th anniversary of “the largest earthquake
in southern California's history occurred on January 9, 1857. It was a magnitude
7.9 on the San Andreas fault, yet killed only 2 people because the region had so
few inhabitants. The fault ruptured for over 200 miles between central
California and Cajon Pass. Farther to the south the fault has not had a major
earthquake for over three hundred years, and is the most likely source of a
great earthquake in the United States.” “Quake experts predict
Katrina-like damage, Scientists urge region to boost emergency plans… Such a
quake, lasting up to four minutes, would cause an estimated 150 deaths, 5,000
injuries and $150 billion in economic damage, primarily to homes around the
region, said Patricia Grossi, an earthquake-risk specialist with RMS, a
risk-management firm.” The full news articles are included below for your
review.
We believe you may have been misinformed or gotten the wrong idea that a valid
fault investigation report has been conducted for the $1 billion dollar plus
project. Let us make it clear, a valid site-specific fault investigation report
ruling out the presence of the active Coronado fault does not exist. The
City of San Diego Geologist, Werner Landry, agreed with our analysis that more
information is needed to the partially submitted report by Manchester before the
site can be issued a clean bill of health. As the City Geologist declared
in his email (see full text below) to us yesterday morning regarding the
Manchester report, “First of all, it is a report for the Navy Administration
Building only, per the title. This alone would not allow it to speak for the
entire NBC site. Second (and more important), the interpretation of the limited
data provided (seismic reflection & CPTs) would not be conclusive enough for a
building permit review approval. Additional information (borings, CPTs) and
alternative interpretations of the existing and new data would be required.
(Remember, this is a Navy building and probably will never come before this
department for review). The other portions of the site certainly need additional
investigation for such an important development. I will recommend this, as did
the EIR.”
In addition, the Development Services Department Project Submittal Manual and
Information Bulletin 515 require a valid fault investigation ASAP because of the
site is in City Hazard Zone is 31 (high risk of liquefaction), not at the time
of building permits for non-Navy buildings are issued (one to two years from
now). According to the attached Information Bulletin 515 (IB- 515), revised
October 2006, the Geotechnical Investigation study identified in Table 515A is
required at project submittal unless a written request for exception is
provided. Exceptions include: B. In zones 31 or 32, considered at risk for
liquefaction, the study can be deferred to the construction permit phase... were
no habitable spaces is proposed. C. In zones 12 or 13 -
Studies may be deferred to construction permit phase where no habitable space is
proposed.
<http://www.laplayaheritage.com/Documents/CITY%20OF%20SAN%20DIEGO/Information_Bulletin_515.pdf>
Page 8 of the Project Submittal Manual, revised October 2006, requires a fault
investigation be submitted as soon as possible as part of the Geologic Hazard
Category and Earthquake Fault Buffer. Page 9 of the Project Submittal Manual
shows that a fault investigation is required before architectural and site
design plans can be reviewed by the City or CCDC. The city standards for fault
investigations on liquefiable soils are not being followed.
<http://www.sandiego.gov/development-services/industry/pdf/psmsec1.pdf>
After the appeal hearing was over, and you denied our concerns were valid, I
asked Captain Mike Allen, Chief of Staff for Navy Region Southwest and the Staff
Project Officer for the Navy Broadway Complex if the Navy will conduct the
required fault investigation. My understanding is the proposed new Navy
Buildings is not part of the 99 year lease by Manchester, but is US Navy federal
property which never needs building permits or approval by the City of San Diego
or any local agency before construction. Captain Allen said the City of San
Diego will require the Navy to do a fault investigation. I asked two more times
if that meant yes, the Navy will conduct the required valid fault investigation.
Both times I was not given a direct answer of yes or no. This is very
disheartening and concerns us. Per the 1992 Developer Agreement, the Navy
Building does not need to ask for or receive building permits from the City for
their new headquarters. Please tell the developer and the Navy that a valid
fault investigation is needed before construction. Or please tell CCDC to
withhold their approval on the Navy Buildings until the seismic issue under the
Navy Buildings is settled.
There is a reason that there are a large number of water and sewer main breaks
on Pacific Highway in the North Embarcadero area of downtown San Diego, Via
Capri, and La Jolla Parkway (Ardath Road). The cause of the excessive breaks is
the ongoing movement of the Rose Canyon Fault Zone (RCFZ) which includes the
Coronado fault. The RCFZ is active and is moving now, not in prehistoric time as
was implied by the City Council. The RCFZ moves approximately 5 inches
every 100 years, with an expected Magnitude of 7.2 over a length of almost 20
miles long. The City of San Diego Street Division has in their manual,
guidelines on how to build public utilities over the active Rose Canyon Fault
Zone using flexible connections instead of rigid material such as concrete and
steel. “Sewer facilities have become substandard and San Diego has had 600 water
main breaks citywide in the last five years, with 25 occurring since last Dec.
1, NBC 7/39 reported.” Think about it, where do you see an excessive amount of
broken water and sewer pipes.
With leadership we can put the question of active faulting under the Navy
Broadway Complex to rest for all concerned. Father, forgive them, for they know
not what they do. Please give us faith in city government. Stand up and be
counted on this important health and safety issue. Please tell us what to do to
get this issue before the City Council, the Land Use and Housing Committee, or
the Public Safety Committee. We are here to help the city we love. Please let us
help you.
Regards,
Katheryn Rhodes and Conrad Hartsell, M.D., 371 San Fernando Street, San Diego,
California 92106, (619) 523-4350,
rhodes@laplayaheritage.com
ATTACHMENTS
http://www.usgs.gov/newsroom/article.asp?ID=1601
"Shift Happens -- Dare To Prepare"
Major earthquake readiness campaign announced on 150th anniversary of last San
Andreas fault earthquake. WHAT: A press conference will be held to: Kick off the
2007 "DARE to Prepare" public awareness campaign, its major message,
"Shift Happens-Secure Your Space," and the campaign website,
www.daretoprepare.org; Announce the formation of the "Movers and Shakers"
leadership group chaired by Sen. Diane Feinstein with government,
business, entertainment, education, and community leaders; Commemorate the
150th anniversary of the last major earthquake on the southern San Andreas fault
with release of loss estimates if the quake were to happen today;
Demonstrate a large quake in a new Shake simulator. All media
representatives are welcome to take it for a ride. See what happens inside your
home during the shaking -- view first-hand hazards to both people and property.
WHEN: Tuesday, January 9, 8:00 a.m. WHY: Historically, earthquakes on the
southern San Andreas fault have occurred every 150 years on average. The region
is due for another. We can be ready for the "big one" if we all act now. WHO:
Presenters and participants will include: Thomas Jordan, Southern California
Earthquake Center at USC; Lucy Jones, U.S. Geological Survey; Ellis Stanley,
City of Los Angeles; A new "Movers and Shakers" group of prominent southern
California leaders including Edward James Olmos and many others; Members of the
Earthquake Country Alliance, a partnership of leading earthquake professionals,
emergency managers, elected officials, businesses, and community leaders WHERE:
University of Southern California, Davidson Conference Center, 3415 S. Figueroa
St., Los Angeles, 90089. Enter USC gate 4 on Jefferson Blvd at Royal St., and
follow signs to the event. News Vans enter USC from Figueroa through gate at
West 34th street, just south of Jefferson blvd. MORE: The largest earthquake in
southern California's history occurred 150 years ago on January 9, 1857. It was
a magnitude 7.9 on the San Andreas fault, yet killed only 2 people because the
region had so few inhabitants. The fault ruptured for over 200 miles between
central California and Cajon Pass. Farther to the south the fault has not had a
major earthquake for over three hundred years, and is the most likely source of
a great earthquake in the United States. The briefing will be concurrent with
the Southern San Andreas Fault Evaluation (SoSAFE) workshop hosted by the
Southern California Earthquake Center (SCEC). SCEC is a consortium of 55
institutions headquartered at USC, with funding
from the National Science Foundation and the USGS.
http://www.signonsandiego.com/news/state/20070110-9999-1n10quake.html
Quake experts predict Katrina-like damage. Scientists urge region to boost
emergency plans
By Gordon Smith COPLEY NEWS SERVICE January 10, 2007.
LOS ANGELES – A major earthquake along the San Andreas fault could bring
Hurricane Katrina-scale devastation and disruption to Southern California,
earthquake scientists and government officials said yesterday as they kicked off
a yearlong campaign to ratchet up emergency planning and encourage residents to
prepare for the inevitability of a powerful quake.
The warning came on the 150th anniversary of the largest earthquake in
California's recorded history – the 7.9-magnitude Fort Tejon quake, which
ruptured a 225-mile section of the San Andreas fault from Parkfield in Central
California to the Cajon Pass in San Bernardino County. Scientists said new
computer simulations show that a quake of similar magnitude along
the fault today would cause shaking stronger and longer than previously
predicted. Such a quake, lasting up to four minutes, would cause an
estimated 150 deaths, 5,000 injuries and $150 billion in economic damage,
primarily to homes around the region, said Patricia Grossi, an earthquake-risk
specialist with RMS, a risk-management firm. Thomas Jordan, director of
the Southern California Earthquake Center at the University of Southern
California, said there is a 30 percent to 70 percent chance of a 7.9-magnitude
quake on the southern part of the San Andreas fault over the next 30 years. “To
seismologists like me, (this section of the fault) could be said to be nine
months pregnant,” he said. The southern section of the San Andreas fault begins
in Parkfield and runs through Palmdale and the Riverside-San Bernardino area to
Palm Springs, the Salton Sea, the Mexican border and beyond. Jordan said that
because of
Southern California's geography, Los Angeles would take the brunt of a major
earthquake centered in Palm Springs, where many scientists believe the San
Andreas fault is particularly overdue for a rupture. San Diego would be
relatively safe during such an event, he said. “It would be probably less
affected than most of the other major communities in Southern California . . .
because it is so far from the San Andreas fault,” Jordan said. “The problem with
San Diego is that there are other faults you want to be concerned about.”
One is the San Jacinto fault, which runs through the Borrego Springs area. There
is some evidence that strain on the southern San Andreas fault may be shifting
westward to the San Jacinto fault, said Lucy Jones, a seismologist with the U.S.
Geological Survey in Pasadena. If that trend is well-developed, it could mean
the San Jacinto fault is more dangerous than the San Andreas. Geologists will
focus on trying to resolve that key question and several others over the coming
year in conjunction with the effort to step up government planning and increase
public awareness of earthquakes and their consequences, Jones said. “The
scientists are taking action” because of the potential danger of a massive
quake, she added. “We're scared.”
The public-awareness part of the campaign aims, among other things, to persuade
residents around the region to prepare for a quake by retrofitting their home's
foundations, strapping down bulky furniture and appliances and stocking water,
canned food and first-aid supplies. A highlight of the effort is a 24-foot
trailer modified with special hydraulics to duplicate the powerful shaking that
a 7.9-magnitude quake would produce. It will be taken to schools and business
where people will be able to sit inside and experience the effects of a major
earthquake, said Dean Reese, president of QuakeHold of Escondido, a manufacturer
of earthquake safety fasteners. Comparing quakes A comparison of the 1857 Fort
Tejon and 1906 San Francisco earthquakes: Estimated magnitude: Fort Tejon: 7.9;
San Francisco: 7.8. Length of rupture: Fort Tejon: 225 miles; San
Francisco: 296 miles Ground displacement: Fort Tejon: 30 feet; San
Francisco: 20 feet. Deaths (direct and indirect): Fort Tejon: 2; San Francisco:
more than 3,000 SOURCE: U.S. GEOLOGICAL SURVEY U.S. Geological Survey The
1857 Fort Tejon earthquake caused a 30-foot horizontal shift near this stretch
of the San Andreas fault on the Carrizo Plain northwest of Los Angeles.
Subject: Re: Navy Broadway Complex - Outstanding Seismic Issues
From: "Werner Landry" <wlandry@sandiego.gov>
Date: Tue, January 9, 2007 11:55 am
To:
rhodes@laplayaheritage.com
Cc: "Werner Landry" <WLandry@sandiego.gov>
Hi Katheryn,
Well I finally got done with my review of the Geocon report for the Navy Admin
Bldg. This was not a complete review as we would require for building permit
review, but I think I have the major points. First of all, it is a report for
the Navy Administration Building only, per the title. This alone would not allow
it to speak for the entire NBC site. Second (and more important), the
interpretation of the limited data provided (seismic reflection & CPTs) would
not be conclusive enough for a building permit review approval. Additional
information (borings, CPTs) and alternative interpretations of the existing and
new data would be required. (Remember, this is a Navy building and probably will
never come before this department for review). The other portions of the site
certainly need additional investigation for such an important development. I
will recommend this, as did the EIR. See you at the Hearing,
Werner R. Landry, P.G., C.E.G.
Senior Engineering Geologist
Development Services Department
1222 First Avenue, MS-401
San Diego, CA. 92101
>>> <rhodes@laplayaheritage.com>
1/8/2007 9:53 PM >>>
Hello Mr. Landry,
Thank you for speaking with me last Friday. We discussed that your
department would have an answer today (Monday) to the adequacy of the submitted
fault investigation to rule out the presence of the active faulting through the
project. We need your assessment before tomorrow's (Tuesday's) 2 pm city council
meeting on the adequacy of the CEQA analysis. Did you get to review the
fault investigation for the Navy Broadway Complex? What is your position on the
matter? Do you think the fault investigation is complete as is, or does it need
more information before you can make an expert opinion on active faulting?
Please respond, we will be awaiting your reply.
Regards,
Katheryn Rhodes and Conrad Hartsell, M.D.
Subject: Navy Broadway Complex - Outstanding Seismic Issues
From:
rhodes@laplayaheritage.com
Date: Wed, January 3, 2007 6:07 pm
To: Werner Landry, City of San Diego Geologist, Development Services
Department.
Reference:
<http://www.laplayaheritage.com/Documents/CITY%20OF%20SAN%20DIEGO/NBC_Appendix_D_Terra_Physic_Seismic_Reflection_&_CPT_Soundings.pdf>
Hello Mr. Landry:
On December 28, 2006 we sent a letter to the developer, Manchester Financial
Group, requesting additional information/clarification on the July 12, 2006
fault investigation for the Navy Broadway Complex. Do date, we have not received
the full report for review before the January 9, 2007 CEQA hearing at City
Council. Has the developer turned in the required information to your department
or the City of San Diego? May we have a copy? As far as we are concerned, the
submitted report is inadequate and the conclusion that no active faults
underlies the project cannot be substantially confirmed. By looking at the data,
we have come to the exact opposite conclusion. Which is that there is
still a very high likelihood that the active Coronado Fault of the Rose Canyon
Fault Zone crosses the Navy Broadway Complex exactly at the location where
high-rise buildings are being planned on liquefiable soils. We are not
geologists or seismologists, but we both are engineers and consider ourselves
scientists. Therefore our analysis of the fault investigation is as lay people
and concerned citizens. Attached please find our analysis and on-going concerns
regarding of the fault investigation. Pages 6 through 9 show the locations of
the active faults, anticlines, or anomalies on the Navy Broadway Complex site
found by seismic reflection surveys. Stratigraphic disruptions and broken marker
beds indicating active faulting are clearly visible. The project seismologist,
Terra Physics, told us that the geologic features may be faults or anomalies,
but because all seismic reflection surveys results are based on interpretations
only, a final conclusion on the cause of the geologic features will be left to
others with more information. Figure 10 through 12 of the attachment show the
locations of the closely-spaced CPT soundings over one of the four active
faults, anticlines, or anomalies. Based on the figures, two of the
closely-spaced CPT locations were not conducted across the geologic features.
Also no closely-space CPT soundings were conducted at the most eastern geologic
features at the location of the high-rise hotels, Navy Headquarters, and office
buildings. In addition, the cross-section of tip resistance shows stratigraphic
disruptions and broken marker beds at the locations where the active faults,
anticlines, or anomalies are located. The data gives further evidence to our
conclusion that additional information is required before one can give the site
a clean bill of health in regards to active faulting. What is your conclusion to
the fault investigation? Do you think it adequately addresses the issue of
active fault through the site? Do you think as we do that active faulting is
clearly shown with the existing evidence/data? We will be awaiting your reply.
FYI, the City of Coronado and the State of California both had independent,
appointed review boards to assess the 2006 fault investigation report prepared
by Kleinfelder, Inc. for the Coronado tunnel project. The City of Coronado had
its own review board consisting of its citizens, some of which were engineers.
The State of California appointed experts in seismology and geotechnical
earthquake engineering to a Coronado tunnel Technical Advisory Panel (TAP) to
evaluate the Kleinfelder report. Kleinfelder was required to submit their draft
fault investigation report to the City of Coronado and the State of California
for comments and input. They were required to conduct meetings with the TAP to
review the plan for their fault investigation and to present their fault
investigation report to the Panel. The comments and input from the TAP were
incorporated into the final fault investigation report for the Coronado tunnel
project, which is still in its preliminary planning stage with an EIR to be
issued in the next few years. This type of open, transparent, independent,
thorough review of the fault investigation report conducted by the City of
Coronado is an example that the City of San Diego should follow.
Regards,
Katheryn Rhodes and Conrad Hartsell, M.D., 371 San Fernando Street, San Diego,
California 92106, 619-523-4350
<http://www.laplayaheritage.com/Documents/CITY%20OF%20SAN%20DIEGO/NBC_Appendix_D_Terra_Physic_Seismic_Reflection_&_CPT_Soundings.pdf
-
Appeal of Navy Broadway Complex CEQA Consistency Analysis - Revised November
7, 2006.
-
Appeal of by Ian S. Trowbridge and
the Broadway Complex Coalition, November 8, 2006.
-
Disposal of the Navy Broadway
Complex Under The BRAC Process, Memorandum, September 20, 2005.
-
Memorandum of Ground Lease, between the USA - US Navy and Manchester Pacific
Gateway LLC, A Delaware LLC, November 22, 2006
from
<http://www.patflannery.com/SanDiegoToday/NavyBroadway/MemorandumOfGroundLease.PDF>
-
CCDC
Meeting November 29, 2006 - Staff Report
-
Citizens
Comments to CEQA Consistency Analysis - October 22-23, 2006.
-
1992 Development Agreement Between the City of San Diego and the United
States. and
Summary of Excerpts/Comments.
-
CCDC Website on the Navy Broadway Complex.
-
California
Coastal Commission Letter to the Navy, October 25, 2006.
-
Memorandum, CEQA Consistency Analysis for Navy Broadway Complex, from Robert
Manis, Assistant Deputy Director, Development Services to James T. Waring,
Deputy Chief of Land Use and Economic Development, October 19, 2006.
-
Memorandum, Navy Broadway/Pacific Gateway Environmental Consistency
Analysis, from Council President Scott Peters to the Mayor and City
Attorney of San Diego, October 20, 2006. "If an appeal is filed on this
particular project, I am willing to docket the appeal for Council
discussion" (from
www.PatFlannery.com ).
-
2005 BRAC Commission Regional Hearing for California and Hawaii, July 14,
2005.
-
Form 1472 -
Authority of Mayor and Independent Department Heads to Bring Matters
Before Open Session of City Council, City Attorney Report, March 13, 2006.
-
Master Plan - CCDC Consistency Determination - Draft Last Updated July 25,
2006.
-
Navy
Broadway Complex Project Environmental Appeals Hearing, Memorandum MS 59,
prepared by the City Attorney, November 22, 2006.
2006 Environmental Assessment (EA).
1990 Environmental Impact Report (EIR) and Environmental
Impact Statement (EIS).
General References.
-
Late Quaternary Faulting in San Diego Bay and Hazards to the Coronado
Bridge, California Geology, July/August 2001, a publication of the
California Geological Survey.
-
Draft Final EIR for the Downtown Community Plan, Chapter 5.5 Geology and
Seismicity, March 2006. Please note that the Coronado strand of the RCFZ
is active, but is not shown as active in the Draft EIR. This discrepancy
should be changed.
-
Citizens Coordinate
for Century 3 - C3 - News and Views on Navy Broadway Complex.
-
CEQA Appendix G.
-
City of San Diego, Development Services Department, Information Bulletin
515.
-
State Land
Commission -
Public Trust Policy -
Public Trust Doctrine -
Public Trust for Woodfin Timeshare 20061214.
-
Appendix 10 - Memorandum of Decision Order. United States of
America versus 15.320 Acres of Land, More or Less, In San Diego County.
Memorandum of Decision Order. Condemnation of the City of San Diego, Port of
San Diego, and State of California public tidelands, July 1-2, 1991.
-
Appendix 11 - Final Judgment in Condemnation. United States of
America versus 15.320 Acres of Land, More or Less, In San Diego County.
Final Judgment in Condemnation. Condemnation of the City of San Diego, Port
of San Diego, and State of California public tidelands, December 7, 1992.
New Information.
Appendix D - Seismic Reflection Data, CPT logs, and Figures of the Geocon Report
dated July 12, 2006.
Subject: Pacific Gateway/Navy
Broadway Complex - Request for additional information/clarification
From: rhodes@laplayaheritage.com
Date: Thu, December 28, 2006
2:08 pm
To: pdealy@manchesterfinancialgroup.com,
pdealy@mresorts.com,
vettel@geoconinc.com,
terraphysics@aol.com
Hello Mr. Dealy,
References:
1. Geotechnical and Geologic Fault Investigation, Pacific Gateway, Navy
Administration Building, Phase 1, Pacific Highway and F Street, prepared for
Manchester Pacific Gateway, LLC, San Diego, California, July 12, 2006, Project
No. 07695-22-01, prepared by Geocon Incorporated.
2. Appendix D of the Geocon Report, Final Report, Seismic Reflection Survey To
Detect the Coronado Fault Zone, Pacific Gateway Development, San Diego,
California, dated June 30, 2006, Project No. 06-19, prepared by Terra Physics.
3. Appendix D of the Geocon Report, Figures D-1 to D-18, CPT Logs CPT-1A to
CPT-18A, Pacific Gateway, dated 06/29/2006, prepared by Gregg's Drilling.
We are missing some information and need clarification on the July 12, 2006
report by Geocon. The copy of the referenced report that was sent to the City of
San Diego is missing some important figures.
All requests for additional information/clarification are from the section named
Appendix D - Terra Physics Report, dated June 30, 2006, CPT logs from Gregg
Drilling, and Figures from Geocon.
In Appendix D - Figures 8, 9, and 10 of the seismic reflection data from the
Terra Physics report is missing. These are Reflection Lines 2A, 2B, and 3,
"Geologic Features Interpreted from the processed reflection section, Pacific
Gateway Development, San Diego."
According to the Terra Physics report, the figures are in color, as opposed to
black and white. In order to interpret the data, the figures are needed in
color. Different colors include dark blue, dark green, purple, black, green,
blue, olive-brown, light purple, and gold. It is impossible to see the data in
black and white. Color copies of the figures in the seismic reflection report
are requested.
Geocon, Terra Physics, and Gregg's Drilling cannot release information without
your consent. The information from Terra Physics is already in digital format
and will be ready to email once you give your approval to release the needed
data. Please allow the subconsultants to release the information to the City of
San Diego and us.
We are also asking for clarification on Figure 11 from the Terra Physics report
in Appendix D. On Figure 11 (attached), there are seismic lines called S-1A,
S-1B, S-2A, S-2B, and S-3. There are also seismic lines called 1A, 1B, 2A, 2B,
and 3, without the S- prefix. Are the S- prefix additional seismic lines
by others, or are they proposed locations before the field work was conducted?
Figure D19, Geologic Map/Site Plan, dated July 12, 2006 is in such a small scale
(1 inch = 120 feet) that it is hard to read the order of the closely spaced CPT
data along Seismic Lines 1A and 3 (CPT Nos. 1A to 18A). Could these two areas be
blown up to see the order of the CPT sounding, which is very important to
determining the horizontal profile. Also can the closely
spaced CPT Nos. 1A to 18A be put into a table with the order from east to west
for further clarification?
We also need clarification on the difference in the location of S-3 between
Figure 11 and Figure D-19 (attached).
For the CPT data we need the raw data which consists of electronic readings in
increments of 3 inches for all 18 of the CPT logs along the seismic lines.
We are requesting color copies of the CPT logs. This information is also already
in digital format, awaiting your consent to release needed data.
Figure D-20 Cross Section of Line 1A/1B and Line 3, CPT Soundings (map pocket)
is also missing from the public report. We are requested that the figure be sent
in adobe format for review.
Gregg's Drilling, the subcontractor for the CPT soundings, have a computer
program where they can provide cross section of the CPT data when asked.
Please ask that cross sections be made for the CPT soundings for both the soil
profile and the tip resistance readings unless this information is already
included in Figure 20.
http://www.greggdrilling.com/insitu.html CONE PENETRATION DATA
PRESENTATION SERVICES
Gregg In Situ, Inc. (Gregg) has developed a new software application designed to
create high quality cross sections and 3D images based on cone penetration
testing (CPT) data retrieved during a site investigation. Gregg’s customized
version of the software program Viewlog can now be effectively interfaced with
CPT data. This powerful new program allows us
to import an Auto CAD map of a site and overlay the exact position of the CPT
soundings directly on the site map. In addition, cross sections are then easily
produced to display cone data, from any number of soundings, side by side and
adjusted for elevation. The cross sections can be displayed in
either a vertical format or in a horizontal format which can
be constructed to display contour maps. A number of different parameters can be
interpreted and displayed in the cross sections, including: Tip resistance,
Sleeve Friction, Dynamic Pore Pressure, Soil Behavior Type, Water table depth
(provided by client), UVIF or other additional data response."
If you have any questions, please contact us.
Regards,
Katheryn Rhodes and Conrad Hartsell, M.D., 371 San Fernando Street, San Diego,
California 92106, (619) 523-4350,
rhodes@laplayaheritage.com
Please contact Ian Trowbridge
chris70@cox.net or Katheryn Rhodes
rhodes@laplayaheritage.com with
questions or comments.
This page is being provided as a Public Service to the Community. |