diff --git a/doc/environment-variables.md b/doc/environment-variables.md
index 76730294fa..767afa6db4 100644
--- a/doc/environment-variables.md
+++ b/doc/environment-variables.md
@@ -3,14 +3,13 @@
 OAI uses/supports a number of environment variables, documented in the following:
 
 - `NFAPI_TRACE_LEVEL`: set the nfapi custom logging framework's log level; can be one of `error`, `warn`, `note`, `info`, `debug`. Default is `warn`.
-- `NR_AWGN_RESULTS_DIR`: directory containing BLER curves for L2simulator channel modelling in SISO case
-- `NR_MIMO2x2_AWGN_RESULTS_DIR`: directory containing BLER curves for L2simulator channel modelling in 2x2 MIMO case
+- `NR_AWGN_RESULTS_DIR`: directory containing BLER curves for NR L2simulator channel modelling in SISO case
+- `NR_MIMO2x2_AWGN_RESULTS_DIR`: directory containing BLER curves for NR L2simulator channel modelling in 2x2 MIMO case
+- `OPENAIR_DIR`: should point to the root directory of OpenAirInterface; BLER curves for LTE L2sim channel emulation 
 - `NVRAM_DIR`: directory to read/write NVRAM data in (5G) `nvram` tool; if not defined, will use `PWD` (working directory)
 - `OAI_CONFIGMODULE`: can be used to pass the configuration file instead of `-O`
 - `OAI_GDBSTACKS`: if defined when hitting an assertion (`DevAssert()`, `AssertFatal()`, ...), OAI will load `gdb` and provide a backtrace for every thread
 - `OAI_RNGSEED`: overwrites any seed for random number generators (RNG) in simulators
-- `OAI_THREADPOOLMEASUREMENTS`: path to a file to store thread pool debugging information, see the [thread pool documentation](../common/utils/threadPool/thread-pool.md)
-- `OPENAIR_DIR`: should point to the root directory of OpenAirInterface; some code relies on this to get a filename, e.g., BLER curves for L2sim channel emulation
 - `USIM_DIR`: directory to read/write USIM data in (4G) `usim` tool; if not defined, will use `PWD` (working directory)
 
 Furthermore, these variables appear in code that is not maintained and maybe not even compiled anywhere:
@@ -19,3 +18,5 @@ Furthermore, these variables appear in code that is not maintained and maybe not
 - `SSH_CLIENT`: alternative host to connect to, for CLI, if `REMADDR` is not defined
 - `USER`: user name in the command-line interface
 - `rftestInputFile`: input file for the `calibration_test` tool
+- `OPENAIR2_DIR` : OMV and OMG modules, obsolete
+- `TITLE`: OTG module, obsolete