Founded in 2001, DCALS is a non-profit organization dedicated to the advancement of the sciences of Surveying and Mapping and to the improvement of the Profession of Land Surveying in the District of Columbia.


Harry “Chas” Langelan



There will be a memorial service for Chas Langelan that will be held this Saturday, November 23 at

Burrier-Queen Funeral Home
1212 W. Old Liberty Road
Sykesville, MD 21784.

The viewing will be from 12:00pm to 2:00pm, followed by eulogies and a reception, all will be held at Burrier-Queen Funeral Home.

Chas Langelan Obituary - click here 

It is with deep regret that we report the loss of one our Survey family members. Harry “Chas” Langelan, 72 of Mount Airy, MD died suddenly and unexpectedly on November 19, 2019. He leaves behind his wife Terry who he has been married to for the past 42 years and his 3 sons Ryan, Kellen and Brady.

Chas had 43 plus years of surveying experience and retired in from A. Morton Thomas in 2008 reaching Vice President by working his way through the ranks and was instrumental in establishing their DC office which was a long-term goal of his.

Those of you that knew Chas know that Surveying was not a career it was a passion for him. He was a friend to all surveyors and considered a surveyor’s surveyor.

Chas served on the Boards of five professional organizations: District of Columbia Association of Land Surveyors (DCALS), Surveyors Historical Society, Maryland Society of Surveyors (Carroll County Chapter President), Map Society and Historical Society.

Chas was a past-president of DCALS and received the First DCALS Lifetime Distinguished Service Award which comes with all the privileges and considerations of an honorary member. He is one of two people to serve continuously on the DCALS Board of Directors since its inception.

Chas was a past-president of MSS and received Surveyor of the Year award.

He often participated in survey reenactments and liked to wear colonial surveyor garments.

Chas reset a Mason-Dixon Crown stone on the MD PA boarder using Colonial Surveying techniques.

He also found DC Boundary stone SE 8 – spent more time with the stone than loved ones that year.

He was known as expert writer with superior narrator skills. He will be remembered as a National surveyor figure with superior presentation skills.

Chas loved to collect old Maps, survey instruments and historical information. He was expert mechanic and lover of old Jeeps.

He will be deeply missed by his family and friends, but his legacy will live on forever.


Awel Ahmed
District of Columbia Association of Land Surveyo



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