As described by the NGS in 1994 (although already monumented in 1987):
"[...] ALONG HOUSTON AVENUE, 36.2 M (118.8 FT) WEST OF THE WEST FACE OF THE FIRST ASSEMBLY OF GOD CHURCH, 30.1 M (98.8 FT) NORTH-NORTHWEST OF THE NORTHWEST CORNER OF THE SOUTH WING OF THE CHURCH, 18.4 M (60.4 FT) EAST OF THE AVENUE CENTERLINE, 11.6 M (38.1 FT) NORTH OF THE WEST LEG OF A SIGN (FIRST ASSEMBLY OF GOD) , 11.3 M (37.1 FT) SOUTH OF THE CENTER 1 OF 3 ENTRANCE ROADS LEADING TO THE CHURCH, 10.0 M (32.8 FT) SOUTHEAST OF UTILITY LIGHT POLE NUMBER 320955, AND 0.3 M (1.0 FT) ABOVE THE LEVEL OF THE AVENUE. NOTE--ACCESS TO THE DATUM POINT IS THROUGH A 5-INCH LOGO CAP."
The 1994 NGS description is actually still quite accurate -- including all reference points and their distance estimates -- except for one major correction: it is no longer the "First Assembly of God" Church" but rather the "Humble Senior Activity Center".
To recap: the BM is located just south of the middle of the 3 driveways into the Humble Activity Center's parking lot, in the grass lawn right by the SW corner of the overall parking area.
The NGS' currently posted coordinates ("N 29 58 55.08 W 095 15 36.42", or "N 29° 58.918 W 95° 15.607") were in line with my observations, as measured within 10' accuracy and 10+ reading averages.
The station was recovered in excellent condition.
---
Below are some basic additional facts, per the NGS database (with some editing for length): (
visit link)
AW5639 ***********************************************************************
AW5639 DESIGNATION - T 1510
AW5639 PID - AW5639
AW5639 STATE/COUNTY- TX/HARRIS
AW5639 COUNTRY - US
AW5639 USGS QUAD - HUMBLE (1995)
AW5639
AW5639 *CURRENT SURVEY CONTROL
AW5639 ______________________________________________________________________
AW5639* NAD 83(1986) POSITION- 29 58 55.08 (N) 095 15 36.42 (W) HD_HELD1
AW5639* NAVD 88 ORTHO HEIGHT - 25.147 (meters) 82.50 (feet) ADJUSTED
AW5639 ______________________________________________________________________
AW5639
AW5639_MARKER: F = FLANGE-ENCASED ROD
AW5639_SETTING: 49 = STAINLESS STEEL ROD W/O SLEEVE (10 FT.+)
AW5639_STAMPING: T 1510 1987
AW5639_MARK LOGO: NGS
AW5639_PROJECTION: RECESSED 10 CENTIMETERS
AW5639_MAGNETIC: I = MARKER IS A STEEL ROD
AW5639_STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL
AW5639_SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR
AW5639+SATELLITE: SATELLITE OBSERVATIONS - February 15, 2014
AW5639_ROD/PIPE-DEPTH: 8.5 meters
AW5639
AW5639 HISTORY - Date Condition Report By
AW5639 HISTORY - 1987 MONUMENTED NGS
AW5639 HISTORY - 19941009 GOOD NGS
AW5639 HISTORY - 20140215 GOOD GEOCAC