CTPP

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3069 discussions

[CTPP] Brainstorming about INCOME variable for the future CTPP (using ACS records)

by Murakami

The first CTPP product from ACS we hope will be a 3-year summary (ACS records from 2005 thru 2007). Clearly, people want a flow tabulation. The 3-year tabulations are limited to geographic units of 20,000 persons or more. We currently don't have a DIFFERENT population threshold for FLOW tabulation based on 3-years of ACS records, but the CTPP Technical Group has been assuming we would want: County -to- County Place -to-Place Perhaps: County - to-Place Place -to- County Using the same 20,000 population threshold. AND THEN, AFTER WORKPLACE ALLOCATION IS COMPLETE, TO HAVE PUMA-TO-PUMA where PUMA of work is not limited to COUNTY, but is a "real" sub-county PUMA where available. The geography for tabulation for this first 3-yr ACS would be restricted to Census 2000 geography, so we can't include "new" PUMAs defined for Census 2010 until probably 2011 or 2012. http://www.bea.gov/scb/pdf/2004/11November/1104Econ-Areas.pdf by Kenneth P. Johnson and John R. Kort There are 179 BEA Economic areas which are county-based. There are 344 component economic areas, which are merged into the 179 Economic Areas. I am wondering if we might use either BEAs or CEAs to calculate either quartile or quintiles to tabulate income for CTPP. I like the CEAs because, for example in the Seattle area, the CEAs separates out the western counties that are fairly rural in nature from the main urban core counties. Therefore the Part 3 tables might look like this: TABLES for FLOW: Table 1. Total workers Table 2. Workers in group quarters (no characteristics) Table 3. Means of Transportation to Work (7) (all workers) Table 4 Income quartiles (4) or Income quintiles (5) (workers in households) (Then, we would have to include a CHART documenting the quartile or quintile values for each of the Economic areas, since they would not be the same # from one area to the next). Therefore, no crosstab of means of transportation by income in the FLOW tabulation. Nandu has been researching using IPF routines to synthesize a crosstab of means of transportation by income for FLOW for "base" TAZs. Because the BEA Economic Areas are large enough, there should be sufficient ACS samples from which to calculate quartiles or quintiles for household income. If there are approx 2 million completed h.u. ACS forms each year, there would be about 11,000 households per BEA economic area (BEA), or 5,800 households per Component economic area (CEA). This avoids the problem of "too many" income categories that result from trying to address variability between places like San Francisco-Oakland and Nashville. Therefore a 3-year accumulated ACS would give us approx 33,000 households for BEA, and 17,400 households for CEA. So, the first step would need to be to calculate the values for each BEA or CEA, and then tabulate the ACS records based on those values. One of the biggest problems with this approach is that it would be up to the data user to KNOW which BEA or CEA area was used. And, we would have to check to see if there are MPOs that cross BEA or CEA boundaries. Let me know what you think about this idea. Elaine Murakami FHWA Office of Planning 206-220-4460

18 years, 2 months

RE: [CTPP] Census Data in High Vacation Rental Areas

by Fernando DePaolis

Richard is absolutely right... The problem as I see it, it's the lack of consistent, cross-tab records to understand why a unit is vacant... Is it due to a tough rental market? Or is it because the unit it's never for rent in the 1st place? Unless there is a specific reason to associate housing units to number of people (such as physical infrastructure inference), housing stock should never be used as a proxy for person counts...AND, YES, Richard is right again about IRS records...it has a few (or too many, depending on how you see it) incongruencies and too much room for interpretation/error... Again, if it were easy there wouldn't be any demographers, right??? Thanks everybody... ******************************************************* Fernando DePaolis Regional Economist Denver Regional Council of Governments 4500 Cherry Creek Dr South Suite 800 Denver CO 80246-1531 (303)480-6728 fdepaolis(a)drcog.org www.drcog.org ******************************************************* > -----Original Message----- > From: Richard Lin [mailto:richard.lin(a)state.co.us] > Sent: Wednesday, June 13, 2007 12:16 PM > To: ctpp-news(a)chrispy.net; Fernando DePaolis; djbeaty(a)pbsj.com > Cc: Cindy DeGroen; Elizabeth Garner; Jim Westkott > Subject: RE: [CTPP] Census Data in High Vacation Rental Areas > > Dear Fernando and All, > In population statistics, a person can only be counted > once and only once. Therefore, if a person lives in his/her > usual (permanent) residence but also owns a second home > (vacation home), his/her second home should be counted as > vacant except it is rented out as permanent (long term; such > as one-year lease) residence for the renters. > Unless you have an annual updated formal report of the > rental list by number of residents, the IRS income tax report > (or county-to-county IRS migration flow) is the best > administrative record for the estimates of population change. > The only shortcoming of the IRS report is that it does not > cover the illegal immigrants and those who either do not file > income tax report or who do file income tax report using > address other than the rental address. > Underestimated second home renters? Maybe. Overestimated? > Possible. The best solution is to have a census count (or > canvass; or administrative record) by well defined residence > rule (a person can only be counted once and only once). > Hope the difficult issue keep demographers alive. > > > ________________________________ > Richard Lin, Ph.D. > Demographer > Colorado Department of Local Affairs > Division of Local Government > 1313 Sherman Street, Room 521 > Denver, CO 80203 > Phone: (303)866-4989 > Fax:: (303)866-2660 > richard.lin(a)state.co.us > www.DOLA.Colorado.Gov > > >>> "Fernando DePaolis" <FDePaolis(a)drcog.org> 6/7/2007 8:58 AM >>> > We have the same problem in the mountain communities where > there is a large proportion of "second" homes, not > necessarily for rent... it's been quite frustrating but at > some point we'll have a method to deal with that... probably > based on reports from local governments... the main problem > in forecasting those figures is the high volatility of such markets... > > Our view is that "the Census" doesn't deal with the > underlying cause of vacancy very well... > > Regards, > > Fernando DePaolis, Ph.D. > Regional Economist > DRCOG - Denver Regional Council of Governments 4500 Cherry > Creek Dr South Suite 800 Denver CO 80246-1531 > (303)480-6728 fdepaolis(a)drcog.org www.drcog.org > <http://www.drcog.org/> > This is a private message sent on my DRCOG email account > pursuant to DRCOG's Internet Policy. This email and any files > transmitted with it are confidential and intended solely for > the use of the individual or entity to whom they are > addressed. If you have received this email in error please > disregard. Any views or opinions presented in this email are > solely those of the author and do not necessarily represent > those of DRCOG. > > > _____ > > From: ctpp-news-bounces(a)chrispy.net > [mailto:ctpp-news-bounces(a)chrispy.net] On Behalf Of Beaty, Daniel J > Sent: Wednesday, June 06, 2007 2:50 PM > To: ctpp-news(a)chrispy.net > Subject: [CTPP] Census Data in High Vacation Rental Areas > > > I want to know if anyone else has had experience with > Census data seeming to under represent population and vacancy > rates in areas with high concentrations of vacation rental > property that tends to be seasonal in nature. I am working > on a project that has this situation and I'm would like to > know if this is an anomaly or if others have seen this also. > > Thanks, > > Daniel J. Beaty, AICP > PBS&J > Transportation Planning Program Manager > 1901 Commonwealth Lane > Tallahassee, Florida 32303 > Phone: 850.575.1800 Ext. 7914 > Fax: 850.574.2428 > >

18 years, 2 months

RE: [CTPP] Census Data in High Vacation Rental Areas

by Richard Lin

Dear Fernando and All, In population statistics, a person can only be counted once and only once. Therefore, if a person lives in his/her usual (permanent) residence but also owns a second home (vacation home), his/her second home should be counted as vacant except it is rented out as permanent (long term; such as one-year lease) residence for the renters. Unless you have an annual updated formal report of the rental list by number of residents, the IRS income tax report (or county-to-county IRS migration flow) is the best administrative record for the estimates of population change. The only shortcoming of the IRS report is that it does not cover the illegal immigrants and those who either do not file income tax report or who do file income tax report using address other than the rental address. Underestimated second home renters? Maybe. Overestimated? Possible. The best solution is to have a census count (or canvass; or administrative record) by well defined residence rule (a person can only be counted once and only once). Hope the difficult issue keep demographers alive. ________________________________ Richard Lin, Ph.D. Demographer Colorado Department of Local Affairs Division of Local Government 1313 Sherman Street, Room 521 Denver, CO 80203 Phone: (303)866-4989 Fax:: (303)866-2660 richard.lin(a)state.co.us www.DOLA.Colorado.Gov >>> "Fernando DePaolis" <FDePaolis(a)drcog.org> 6/7/2007 8:58 AM >>> We have the same problem in the mountain communities where there is a large proportion of "second" homes, not necessarily for rent... it's been quite frustrating but at some point we'll have a method to deal with that... probably based on reports from local governments... the main problem in forecasting those figures is the high volatility of such markets... Our view is that "the Census" doesn't deal with the underlying cause of vacancy very well... Regards, Fernando DePaolis, Ph.D. Regional Economist DRCOG - Denver Regional Council of Governments 4500 Cherry Creek Dr South Suite 800 Denver CO 80246-1531 (303)480-6728 fdepaolis(a)drcog.org www.drcog.org <http://www.drcog.org/> This is a private message sent on my DRCOG email account pursuant to DRCOG's Internet Policy. This email and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. If you have received this email in error please disregard. Any views or opinions presented in this email are solely those of the author and do not necessarily represent those of DRCOG. _____ From: ctpp-news-bounces(a)chrispy.net [mailto:ctpp-news-bounces(a)chrispy.net] On Behalf Of Beaty, Daniel J Sent: Wednesday, June 06, 2007 2:50 PM To: ctpp-news(a)chrispy.net Subject: [CTPP] Census Data in High Vacation Rental Areas I want to know if anyone else has had experience with Census data seeming to under represent population and vacancy rates in areas with high concentrations of vacation rental property that tends to be seasonal in nature. I am working on a project that has this situation and I'm would like to know if this is an anomaly or if others have seen this also. Thanks, Daniel J. Beaty, AICP PBS&J Transportation Planning Program Manager 1901 Commonwealth Lane Tallahassee, Florida 32303 Phone: 850.575.1800 Ext. 7914 Fax: 850.574.2428

18 years, 2 months

[CTPP] [Fwd: [public-news-alert] Census Bureau News -- Tip Sheet #12]

by Ed Christopher

What could they possible be releasing? See Below. Didn't the CTPP Technical Team already complile this data and more with our profiles last January? Like the profiles we did for workers at their home location. We did the whole nation and then some smaller geographies. Here is the whole nation. http://ctpp.transportation.org/production/United%20States.htm There also were profiles on workers at their Work Place for Counties and other geography--Here is Cook County Illinois for example http://ctpp.transportation.org/Profiles1/Numbers/pow_Cook_County__Illinois.… There also were journey to work profiles talking about some of the travel related variables but in terms of households. The universe of all the profiles can be found here. http://ctpp.transportation.org/2005.htm As far as the big CB release, I guess I will just have to wait until June 13th and then remember to go look for the data. -------- Original Message -------- Subject: [public-news-alert] Census Bureau News -- Tip Sheet #12 Date: Fri, 8 Jun 2007 14:07:32 -0400 From: angela.c.baker(a)census.gov June 8, 2007 TP07-12 Upcoming American Community Survey Commuters Still Driving Alone -- Despite rising gas prices, the nation's workers are not using public transportation at a greater rate. This look at 2005 American Community Survey data shows how commuters at the national, state and local level (areas of 65,000 population or more) are getting to work. (Tentatively scheduled for release June 13.) _______________________________________________ public-news-alert mailing list public-news-alert(a)lists.census.gov http://lists.census.gov/mailman/listinfo/public-news-alert

18 years, 2 months

[CTPP] Census Data in High Vacation Rental Areas

by Beaty

I want to know if anyone else has had experience with Census data seeming to under represent population and vacancy rates in areas with high concentrations of vacation rental property that tends to be seasonal in nature. I am working on a project that has this situation and I'm would like to know if this is an anomaly or if others have seen this also. Thanks, Daniel J. Beaty, AICP PBS&J Transportation Planning Program Manager 1901 Commonwealth Lane Tallahassee, Florida 32303 Phone: 850.575.1800 Ext. 7914 Fax: 850.574.2428

18 years, 2 months

[CTPP] Freight Data - Call for papers

by Nanda.Srinivasan＠dot.gov

FYI...For those of you interested in Freight Data issues --this came from the TRB ABJ90 Freight Data Committee, ABJ40 Travel Survey Methods Committee, and the AT016T Task Force on Innovations in Freight Transportation Modeling. Submissions are due August 1st for the 2008 TRB conference. Call for Papers ABJ90 Freight Data, ABJ40 Travel Survey Methods, and AT016T Task Force on Innovations in Freight Transportation Modeling 87th TRB Annual Meeting January 2008 The TRB committees on Travel Survey Methods (ABJ40), and Freight Data (ABJ90), and Task Force on Innovations in Freight Transportation Modeling (AT016T) invite papers on the collection of freight data for use in freight planning, modeling freight, and integrating freight into the urban transportation planning process. Freight data is important for both understanding the movement of commodities and developing methods for modeling these movements within the context of transportation systems and planning for future transportation needs. This call for papers is on freight survey methods and the challenges and opportunities for advancing the practice of collecting, measuring, and understanding freight data and its impact on transportation. The committees welcome papers on topics related to freight surveys including: * Survey Methods: challenges and solutions for collecting accurate data on the types and amounts of freight being transported nationally, regionally, and locally. * Non-response Issues: how survey methods are dealing with non-response and the methods used to adjust freight data to account for any non-response bias. * New Technologies: new methods for collecting data on freight including sampling and data expansion. * Innovative Approaches: how freight surveys are being designed and implemented including methods for sampling and the techniques for collecting the data. * Data Needs for Modeling: how are data needs for modeling being identified and addressed in the survey process and how are the data being integrated and used in the freight models. Please indicate ABJ40 or ABJ90 on the Submission Review form to indicate a response to this call for papers. Papers for the 2008 Annual Meeting must be submitted electronically no later than August 1, 2007. Authors who submit papers are requested to send the paper number and title by August 1, 2007 to Benjamin Ritchey (Committee on Freight Data) ritchey(a)battelle.org or Dr. Kara Kockelman (Committee on Travel Survey Methods) kkockelm(a)mail.utexas.edu. Further information about this call for papers may be obtained from: David Pearson, Texas Transportation Institute, College Station, Texas, : (979) 845-9933, Email: david-pearson(a)tamu.edu

18 years, 2 months

[CTPP] Job Opening for Transportation Planner/Modeler/Traffic Engineer in China

by Zhao Lei

Dear Everyone, Atkins, China is recruiting Principle/Senior Transport Planner/Modeler and Traffic Engineer. We are currently running/bidding on several large metropolitan transportation planning projects in China. We urgently need specialist from oversea. If interested, please contact me at: Email: charlie.zhao(a)atkins.com.cn Tel.: +86-21-61225022 Mobile: +86-13370206289 Sincerely, Charlie Zhao Transport Planner ATKINS Consultants Ltd Shanghai Branch 46th Floor Raffles City,268 XiZang Zhong Road, SH, 20001 Tel.: +86 21 6122 5022 Fax : +86 21 6122 5101 E-mail: charlie.zhao(a)atkins.com.cn Permanent/Temporary Position: Principal/senior Public Transport Planner Ref CH0066 Region Mainland China Location Shanghai, Shenzhen, Beijing Sector Transport Degree Discipline (where appropriate) Transport Systems Functional Specialism Planners/Schedulers/Transport Planners Public Traffic planning job opportunity in Atkins Shanghai Job Summary This position is within Atkins China Transport Planning which covers all aspects of transport planning from policy research and strategic appraisal through to development assessment and traffic engineering. Especially this position is highly focused on bus priority, bus lines design and parking scheme design and implementation. The successful candidate would be expected to perform the following duties: * Identify project resource requirements. * Be in charge of bus lines, bus priority design, parking scheme design and implementation and other projects of transport planning. * Prepare designs, calculations, specifications, drawings, programmes and cost estimates for specific jobs * Check drawings, calculations or programs * Advise technicians on detailing * Produce reports on projects as directed * Assist with preparation of tender documents, provide information for reports and participate in particular investigations as required * Evaluate engineering problems, consulting senior staff as necessary Mandatory Requirements of the role * At least 10 years working experience in traffic engineering and transport planning; 20 years experience is highly evaluated * Experiences of public traffic design, like bus lane design, bus priority. * Degree or above in transport planning Additional Information Applicants should have the ability to work on a diverse range of projects under their own initiative. They should have a desire to improve their technical ability and possess good organizational and communication skills. Atkins develops individuals through a portfolio of in-house and external training and development courses designed to help them make the best of their abilities and talents. These are reviewed with individuals through our annual appraisal process. We hold annual salary reviews and regularly benchmark competitors' benefit packages in order to remain competitive in the market place. We actively support staff in achieving corporate membership of relevant institutions. Rewards & Benefits The list below includes contractual as well as non-contractual benefits - these will be confirmed on appointment: * Competitive salary * Flexible annual leave scheme - 20 days * Life assurance scheme * Professional membership fees paid * Employee Referral Bounty Scheme Permanent Temporary Position: Principal Transport Planner-Modelling Ref CH0062 Region Mainland China Location Shanghai Sector Transport Degree Discipline (where appropriate) Planning (Transport & Urban) Functional Specialism Planners/Schedulers/Transport Planners Transport modeling working opportunity in Atkins Shanghai Job Summary This position is within Atkins Transport Planning team which covers all aspects of transport planning from policy research and strategic appraisal through to development assessment and traffic engineering. The Networks and Traffic business deals with the development of traffic engineering and traffic management solutions including road safety, bus priority and parking scheme design and implementation. We are looking for an enthusiastic and motivated team player to strengthen the Transport business unite especially focuses on Transport Modeling in our Shanghai office, The successful candidate will be working within a team reporting to National Transport Planning Manager and be expected to perform the following duties: Project Role: * Identify project resource requirements * Ensure that project work is carried out within agreed timescales and budget * Attend meetings as required Technical Role: * Evaluate engineering problems, prepare detailed methodologies and designs, draw up specifications, programmes and cost estimates for specific jobs * Use EMME2 and VISSIM, LEGION at competent level with respect to input, analysis and interpretation * Ensure technical content and quality of work produced is in line with the project brief * Liaise with clients and other disciplines as required on technical aspects Mandatory Requirements of the role * At least 10 year working experiences in transport planning. * Production of transport modeling software knowledge of CUBE, EMME2, VISSIM, LEGION is essential. * Bachelor degree of transport planning or above Additional Information Applicants should have the ability to work on a diverse range of projects under their own initiative. They should have a desire to improve their technical ability, possess good organizational and communication skills and the ability to write high quality reports. Rewards & Benefits The list below includes contractual as well as non-contractual benefits - these will be confirmed on appointment. * Competitive salary * Flexible annual leave scheme-15-20 days * Life assurance scheme * Professional membership fees paid

18 years, 3 months

[CTPP] Notice of Job Opening

by Bob Paddock

The posting below describes an opportunity now open at Metropolitan Council in St Paul, MN. I'd appreciate your help publicizing the opening or referring candidates. The Metropolitan Council is the regional planning agency and MPO for the seven-county Minneapolis-St Paul metro area. The Council's Research Unit is engaged in demographic and Census analysis, forecasting, development monitoring, housing market and land use analysis, and transportation statistics. Questions about the opening and hiring process can be addressed to HR.Team3(a)metc.state.mn.us Cheers, Todd Graham Research Manager Metropolitan Council ________________________ Notice of Job Opening Position: Senior Researcher (Senior Forecaster) Job Posting No: 290951 Salary Range: $46,961 - $70,442 Division: Community Development Department: Research Posting Date: April 27, 2007 Application Deadline: Open Until Filled Position Summary Provides expertise and project leadership for demographic forecasting, socio-economic modeling, development and re-development monitoring, and land supply analysis. Major responsibility for scoping and implementation of Council's demographic and land use forecasting, including potential implementation of a disaggregate micro-simulation model (e.g., UrbanSim or OPUS). Major responsibility for regional forecast revisions (twice per decade), working with team to assess, analyze and organize data inputs needed by the forecast model. Participates as forecast expert in regional system plans development (transportation and water resources) and local comprehensive plans review and coordinates minor/interim forecast revisions. Provides consultation and support for other Council projects. Education/Training & Experience Requirements * BS degree in demography, geography, applied economics, statistics, a related social science, or urban planning. Master's degree is preferred. * Minimum five (5) years of professional experience in research, analysis, government statistics and/or data management, which includes substantive experience in the following areas: ~ Research project design and management; ~ Forecasting and model-building (e.g. demographic, or land use, or transportation); ~ Advanced statistical analysis (regression, log-linear, cluster analysis, factor analysis, etc.). * Inter-disciplinary knowledge of current regional science theory and methods, as well as understanding of metropolitan growth management. * Must be proficient in MS Office Suite, MS Access, SAS for statistical analysis, and programming tools (e.g., VBA/VB, Python, Perl or similar). Preferred Qualifications * Preference given for experience in land use econometrics, spatial econometrics, or disaggregate micro-simulation forecast modeling, or transportation system modeling. * Public Sector experience preferred. A combination of education and years of relevant experience may be considered. Selection Process The selection process for this position will consist of a review of your education and experience from the application materials submitted. Applications will then be forwarded to the hiring department for further consideration. Please visit our website at www.metrocouncil.org/jobs/apply.htm for more information about this position and for employment application forms. How to Apply For consideration, applicants must submit a completed Metropolitan Council Employment Application form and resume. Human Resources will begin reviewing applications received approximately May 18, 2007. Metropolitan Council Email: HR.Team3(a)metc.state.mn.us Fax: 651/602-1071, or Mail: Human Resources, 390 Robert Street North, St. Paul, MN 55101 Clearly indicate the job title and posting number on information submitted. Candidates who do not submit the required information will not be considered. Employment application forms are available at www.metrocouncil.org/jobs/apply.htm www.metrocouncil.org/jobs/jobfiles/SR_Researcher_RA_290951.pdf Robert J. Paddock Transportation Research Metropolitan Council 390 N. Robert Street St. Paul, MN 55101 651 602-1340

18 years, 3 months

[CTPP] Recommendations to 2007 ACS Standard Table list?

by Murakami

The list of tables for the 2006 ACS is set. The 2006 ACS included Group Quarters. The CB will be defining the 2007 ACS STANDARD table set in Fall 2007. The 2005-2007 ACS will be the first time an accumulated 3-year data from ACS will be available. Nathan Erlbaum of New York State DOT has asked USDOT to request a univariate table of workers by INDUSTRY for workplace geography, because he is finding that a count of workers by 3-digit NAICS is very useful for estimating truck traffic. There are currently a couple of tables with INDUSTRY in the standard ACS table set, but they are cross-tabulated with MEANS OF TRANSPORTATION TO WORK, and therefore more likely to be suppressed or collapsed. There are also some tables for residence geography of B24030: SEX by INDUSTRY, and B24040: SEX by INDUSTRY for full-time, year-round civilian employed, which might address Nathan's wish to have a parallel table at residence geography. So, please take the time to examine the current 2005 ACS table set...http://www.census.gov/acs/www/Products/users_guide/index.htm While the CB does not want to be inundated with many new table requests, I am taking this opportunity to ask you (the transportation data user community) for your input. This way, we can submit ONE coordinated request to the CB. We also expect the new CTPP to include a 3-year CTPP SPECIAL TABULATION from ACS, so if your table request is not added to the CB's STANDARD set, we can consider it for the CTPP set! Thanks in advance for your input! We have organized a National Data Workshop on Sunday, May 6 at 2 p.m. at the TRB Transportation Planning Applications Conference in Daytona Beach. We will be covering both CTPP and NHTS. See you there! Elaine Murakami FHWA Office of Planning 206-220-4460 (in Seattle)

18 years, 3 months

[CTPP] Publication of proposed criteria for tracts, block groups, CDPs, and CCDs

by Ed Christopher

The "long awaited" Federal Register notice dealing with the proposed criteria for defining Tracts and Block Groups has been released. See below. -------- Original Message -------- Subject: Publication of proposed criteria for tracts, block groups, CDPs, and CCDs Date: Fri, 6 Apr 2007 15:02:12 -0400 From: michael.r.ratcliffe(a)census.gov To: edc(a)berwyned.com Ed, I am pleased to announce that the proposed criteria for census tracts, block groups, CDPs, and CCDs was published today in the Federal Register. Could you send a message to the CTPP folks and anyone else you can think of in the transportation community announcing publication of the notices? I am including text for your use in the message (see below and also attached). Thanks, Mike --------------------- The Census Bureau has published proposed criteria for census tracts, block groups, census designated places (CDPs), and census county divisions (CCDs defined in 22 states as the statistical equivalents of minor civil divisions) for the 2010 Census in the Federal Register on April 6, 2007. All interested individuals and organizations are invited to review and comment, as appropriate, on the proposed criteria for these statistical areas. Each of the Federal Register notices is available on the Census Bureau's Participant Statistical Areas Program website at http://www.census.gov/geo/www/psap2010/psapcriteria.html as well as via the Federal Register's website at http://www.gpoacess.gov/fr/index.html. General information about the 2010 Participant Statistical Areas Program is available on the Census Bureau's website at http://www.census.gov/geo/www/psap2010/psap2010_main.html Requests for additional information about these statistical areas as well as copies of the proposed criteria Federal Register notices should be directed to Michael Ratcliffe, Chief, Geographic Standards and Criteria Branch, Geography Division, U.S. Census Bureau, via e-mail at geo.psap.list(a)census.gov or telephone at 301-763-3056. Comments on the proposed criteria for these statistical areas should be provided in writing to the Director, U.S. Census Bureau, Room 8H001, Mail Stop 0100, Washington, DC 20233-0001. Written comments must be submitted on or before July 5, 2007. In summary, the proposed changes to the criteria for census tracts, block groups, CDPs, and CCDs are: Census Tracts -Lower the minimum population threshold for most tracts to 1,200. -Housing units counts may be used in addition to meet tract thresholds. -All types of populated tracts should meet the same thresholds. -Wherever possible census tracts should conform to American Indian reservations. -Special tracts may be created for large special land use areas without housing units or population. Block Groups: -Increase the minimum population threshold to 1,200. -Housing units counts may be used to meet block group thresholds. -All types of populated block groups must meet the same threshold. -Wherever possible block groups should conform to American Indian reservations. -Special BGs may be created for large special land use areas without housing units or population. CDPs: -A CDP cannot have zero population and zero housing units. -A CDP cannot be coextensive with a governmentally active minor civil division (i.e., town, township, charter township, plantation). This change will reduce redundancy in place and county subdivision data tabulations for the following states: Connecticut, Maine, Massachusetts, Michigan, Minnesota, New Hampshire, New Jersey, New York, Pennsylvania, Rhode Island, Vermont, and Wisconsin. -A CDP must represent a single, distinct community. A CDP that represents multiple, distinct communities, and the hyphenated name typically assigned to represent such CDPs, will not be permitted. Exceptions will be made for communities whose identities have merged and in which both names commonly are used together. CCDs: -The Census Bureau is questioning whether to retain or eliminate CCDs as geographic entities. If eliminated, CCDs would not be replaced by other sub-county geographic entities.

18 years, 4 months

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