parcel-level gis briefing book - boundary...

BSI©2015 1 ENERGY COMPANY PARCEL-LEVEL GIS BRIEFING BOOK

ENERGY INDUSTRY Parcel-Level GIS

BRIEFING BOOK

Examination of techniques & protocols for incorporating National Parcel Layer content to vastly reduce cost to better meet accelerating demand for high volume, safer natural gas production, transmission and distribution operations.

- SEAMLESS Parcel Map Development Strategy - High Consequence Analysis - Corridor Analysis - Alternative Route Analysis - Instant Notification


Parcel-Level GIS

SEAMLESS Development

Strategy TO SLASH STARTUP COST

BASIC LAYER

Underlying ALL Operations

o Parcel Boundaries o Assessor Parcel Number o Owner Info IF part of GIS IN STOCK

QUICK FULFILLMENT NO MAP

Pipelines Representational

Only

SEAMLESS Development Strategy (SDS) starts by putting all BASIC (boundary, APN, included owner info) countywide digital parcel map database coverage under all existing and projected Enterprise operations. BSI keeps all BASIC LAYER counties current to within 12 months. Startup costs slashed by leaving difficult content out, to be paid for later as project cost


Think of the Seamless Development Strategy (SDS) as a clothesline on which to hang Project Specific data (additional ownership / project-specific content) only when needed. System wide, all parcel boundaries and APNs and most Owner Info is already there, < 12 months old. As needed, project information is added to the SDS the same way in the same slots.

Parcel-Level GIS

SEAMLESS

Development Strategy

Project Specific Data As project specific needs are identified, AS NEEDED additional content is added to the pertinent data slots within the BSI NPDP Data Model By the most cost effective agent …

o In-House o Preferred 3rd Party o BSI

Additional Data Elements are added to the standard slots (fields etc.) of the SEAMLESS Parcel Layer - Attributes - Plat Maps - Other Data Elements


PROPOSED NEW ALIGNMENT CORRIDOR ANALYSIS Minutes to digitize a proposed new transmission pipe alignment, adding it to the data model, moments more to buffer as needed and write all parcels in the national parcel layer to a new shp file of just the parcels within or touching this extent line.

Harris County

Buffered Alignment as Corridor Extents

Proposed New Segment

All Parcels within or Crossing Corridor Extents

Energy Company Parcel-Level GIS

Alternative Route

Analysis

A large buffer is generated around the alignment of the preferred alignment of a new transmission line segment. Additional data elements assembled and normalized by designated agent include:

o Use Code o Improvement Value o Unit Count o Plat Maps o Deed Descriptions o Deed transfer info. o Others


PROPOSED PIPELINE CORRIDOR LAND USE THEMATIC MAP Use Codes are normalized across county and state boundaries so that one color scheme fits all. Seen here are land use patterns useful for adjusting the alignment as needed.

Harris County


PROPOSED NEW ALIGNMENT CORRIDOR ANALYSIS Assigned Use Codes, assessed improvement values and ownership is used to identify the alignment is adjusted to reduce the proximity to High Consequence Parcels. Ownership and other property attributes are linked to the boundaries for when you need them.

Harris County


ALTERNATIVE ROUTE ALIGNMENT ANALYSIS The proposed new pipe alignment as originally proposed is buffered 1,320 ft and all parcels within or crossing this buffer are selected from parcels within corridor and their attributes are generated as a report.

Property Records in Original Alignment

Harris County

Original Alignment

1,320 Foot Buffer

All Parcels within or Crossing Original Alignment Buffer

Corridor Extents


ALTERNATIVE ROUTE ALIGNMENT ANALYSIS In seconds, a buffer around the alternative is struck generating an alternative list of parcels within or touching that buffer.

Property Records in Alternative Alignment

Harris County

Alternative Alignment

1,320 Foot Buffer

All Parcels within or Crossing Alternative

Alignment Buffer

Corridor Extents


ALTERNATIVE ROUTE ALIGNMENT ANALYSIS In a matter of minutes, identified sites are counted up in each alternative buffer to compare the two alignments in terms of relative percent high consequence parcels encountered by each.


INSTANT NOTIFICATION AREA STRADLING TWO COUNTIES Shown here to provide context within the Test Bed Area the extents of the project area.

Harris County Harris County

Montgomery County Energy Company Parcel-Level GIS

Instant Notification A facility to be constructed at the upstream end of an EXISTING transmission line requires notification of every parcel within or touching a one mile buffer around it to assure adequate public outreach. Flawless rapid response to this request can be made within minutes of identifying the parcel boundary of the property being developed.


INSTANT NOTIFICATION AREA STRADLING TWO COUNTIES In seconds after the subject parcel being developed is selected, a buffer is generated that…

Harris County

Montgomery County




INSTANT NOTIFICATION PROPERTIES STRADLING TWO COUNTIES But the request is processed referencing a unified county independent geospatial database that includes every parcel in Harris and Montgomery County. Automatic mailing of a letter to every owner of every parcel in the buffer can be easily scripted.

Harris County

Montgomery County




HIGH CONCEQUENCE AREA ANALYSIS AND REPORTING A PIR 660 feet Radius (200 Meters) is generated every 660 feet along the transmission pipe alignment.

Harris County

Montgomery County

Potential Impact Radius (PIR). PIR = 0.69* (square root of (p*d 2)), ‘PIR’ = radius of a circular area in feet surrounding the point of failure, ‘p’ = maximum allowable operating pressure (MAOP) LB/SF ‘d’ = nominal diameter of the pipeline in inches. 0.69 = is the natural gas coefficient.

Potential Impact Radius (PIR)


High

Consequence Area Analysis

& Reporting

For the ‘project area’ only, more attributes are added by the preferred designated agent as needed including…

o Use Code o Improvement Value o Unit Count


HIGH CONCEQUENCE AREA ANALYSIS AND REPORTING The total number of identified parcels (sites) with boundaries within or crossing each PIR are counted up and assigned to each PIR.

Harris County

Montgomery County

Total Identified Sites Within Each PIR

Parcels Designated as Identified Sites


HIGH CONSEQUENCE AREA ANALYSIS AND REPORTING Once a value is assigned, there are many ways to display the relative exposure of pipe segment as well as the High Consequence Areas, segments with 660 feet of more than 20 Identified sites.

Harris County

Thematic Map of Relative Number of

Identified Sites within each PIR



BRIEFING BOOK

Examination of techniques & protocols for incorporating National Parcel Layer content to vastly reduce cost-of-transaction to better meet accelerating demand for higher volume, safer natural gas production, transmission and distribution operations.

Contents

- SEAMLESS Parcel Map Development Strategy - High Consequence Analysis - Corridor Analysis - Alternative Route Analysis - Instant Notification

Boundary Solutions, Inc. Mill Valley, CA 94941

415-381-1750 www.boundarysolutions.com

parcel-level gis briefing book - boundary...

Documents