diff --git a/.github/workflows/github_actions.yml b/.github/workflows/github_actions.yml
index ac463a8621..5a35bd06d3 100644
--- a/.github/workflows/github_actions.yml
+++ b/.github/workflows/github_actions.yml
@@ -144,6 +144,13 @@ jobs:
             fc: gfortran-9
             blas: "accelerate"
             xcode_version: 12.1
+          - os: macos-10.15
+            experimental: true
+            mpi_impl: mpich
+            armci_network: mpi-ts
+            nwchem_modules: "tinyqmpw"
+            fc: ifort
+            xcode_version: 12.5
           - os: ubuntu-20.04
             experimental: true
             mpi_impl: mpich
@@ -189,6 +196,7 @@ jobs:
         with:
           path: |
             ~/cache
+            ~/apps
           key: ${{ matrix.os }}-${{ matrix.mpi_impl}}-${{ matrix.fc}}-xcode${{ matrix.xcode_version}}-simint${{ matrix.use_simint}}-blas${{ matrix.blas}}-simd${{ steps.get-simd.outputs.simd }}-nwchemcache-v007
       - name: build environment
         run: |
@@ -218,6 +226,7 @@ jobs:
           cat src/tools/build/comex/config.log || true
       - name: store cache
         run: |
+          mkdir -p ~/apps || true
           mkdir -p ~/cache/libext/lib  ~/cache/libext/bin  ~/cache/libext/include ~/cache/libext/mpich || true
           mkdir -p ~/cache/libext/mpich/mpich || true
           mkdir -p ~/cache/simint/simint_install || true
diff --git a/travis/build_env.sh b/travis/build_env.sh
index 4c9f96d97b..f5b78247a0 100755
--- a/travis/build_env.sh
+++ b/travis/build_env.sh
@@ -16,14 +16,51 @@ if [ -z "$DISTR" ] ; then
     DISTR=$dist
 fi
 echo DISTR is "$DISTR"
+case "$os" in
+    Darwin)
+	IONEAPI_ROOT=~/apps/oneapi
+	;;
+    Linux)
+	IONEAPI_ROOT=/opt/intel/oneapi
+	;;
+esac
  if [[ "$os" == "Darwin" ]]; then 
 #  HOMEBREW_NO_AUTO_UPDATE=1 brew cask uninstall oclint || true  
 #  HOMEBREW_NO_INSTALL_CLEANUP=1  HOMEBREW_NO_AUTO_UPDATE=1 brew install gcc "$MPI_IMPL" openblas python3 ||true
      HOMEBREW_NO_INSTALL_CLEANUP=1  HOMEBREW_NO_AUTO_UPDATE=1 brew install gcc "$MPI_IMPL" python3 ||true
-     #hack to fix Github actions mpif90
-     ln -sf /usr/local/bin/$FC /usr/local/bin/gfortran
-     $FC --version
-     gfortran --version
+     if [[ "$FC" == "ifort" ]]; then     
+	mkdir -p ~/mntdmg ~/apps/oneapi || true
+	cd ~/Downloads
+	dir_base="17714"
+	dir_hpc="17643"
+	base="m_BaseKit_p_2021.2.0.2855_offline"
+	hpc="m_HPCKit_p_2021.2.0.2903_offline"
+	curl -LJO https://registrationcenter-download.intel.com/akdlm/irc_nas/"$dir_base"/"$base".dmg
+	curl -LJO https://registrationcenter-download.intel.com/akdlm/irc_nas/"$dir_hpc"/"$hpc".dmg
+	echo "installing BaseKit"
+	hdiutil attach "$base".dmg  -mountpoint ~/mntdmg -nobrowse
+	sudo ~/mntdmg/bootstrapper.app/Contents/MacOS/install.sh --cli  --eula accept \
+	     --action install --components default  --install-dir ~/apps/oneapi
+	hdiutil detach ~/mntdmg
+	#
+	echo "installing HPCKit"
+	hdiutil attach "$hpc".dmg  -mountpoint ~/mntdmg -nobrowse
+	sudo ~/mntdmg/bootstrapper.app/Contents/MacOS/install.sh --cli  --eula accept \
+	     --action install --components default --install-dir ~/apps/oneapi
+	hdiutil detach ~/mntdmg
+	ls -lrta ~/apps ||true
+	sudo rm -rf "$IONEAPI_ROOT"/intelpython "$IONEAPI_ROOT"/dal "$IONEAPI_ROOT"/advisor \
+	     "$IONEAPI_ROOT"/ipp "$IONEAPI_ROOT"/conda_channel 	"$IONEAPI_ROOT"/dnnl \
+	     "$IONEAPI_ROOT"/installer "$IONEAPI_ROOT"/vtune_profiler "$IONEAPI_ROOT"/tbb || true
+	source "$IONEAPI_ROOT"/setvars.sh || true
+	ifort -V
+	icc -V
+     else
+	 #hack to fix Github actions mpif90
+	 ln -sf /usr/local/bin/$FC /usr/local/bin/gfortran
+	 $FC --version
+	 gfortran --version
+     fi
 #  if [[ "$MPI_IMPL" == "openmpi" ]]; then
 #      HOMEBREW_NO_INSTALL_CLEANUP=1 HOMEBREW_NO_AUTO_UPDATE=1 brew install scalapack
 #  fi
@@ -53,7 +90,7 @@ fi
     if [[ "$MPI_IMPL" == "mpich" ]]; then
         mpi_bin="mpich" ; mpi_libdev="libmpich-dev" scalapack_libdev="libscalapack-mpich-dev"
     fi
-    if [[ "$MPI_IMPL" == "intel" ]]; then
+    if [[ "$MPI_IMPL" == "intel" || "$FC" == "ifort" ]]; then
 	export APT_KEY_DONT_WARN_ON_DANGEROUS_USAGE=1
         tries=0 ; until [ "$tries" -ge 5 ] ; do \
 	wget https://apt.repos.intel.com/intel-gpg-keys/GPG-PUB-KEY-INTEL-SW-PRODUCTS.PUB \
diff --git a/travis/compile_nwchem.sh b/travis/compile_nwchem.sh
index 80351f11f2..4ab5d716ff 100755
--- a/travis/compile_nwchem.sh
+++ b/travis/compile_nwchem.sh
@@ -41,14 +41,18 @@ if [[ "$arch" == "aarch64" ]]; then
 else
     if [[ "$FC" == "ifort" ]] ; then
 	FOPT=-O2
-	export USE_FPICF=Y
+	if [[ "$os" == "Darwin" ]]; then
+	    export BUILD_MPICH=1
+	else
+	    export USE_FPICF=Y
+	    export SCALAPACK_LIB=" -lmkl_scalapack_ilp64 -lmkl_blacs_intelmpi_ilp64 -lpthread -lm -ldl"
+	    export SCALAPACK_SIZE=8
+	    unset BUILD_OPENBLAS
+	    unset BUILD_SCALAPACK
+	fi
 	export BLASOPT=" -lmkl_intel_ilp64 -lmkl_sequential -lmkl_core  -lpthread -lm -ldl"
-	export LAPACK_LIB=" -lmkl_intel_ilp64 -lmkl_sequential -lmkl_core  -lpthread -lm -ldl"
-	export SCALAPACK_LIB=" -lmkl_scalapack_ilp64 -lmkl_blacs_intelmpi_ilp64 -lpthread -lm -ldl"
 	export BLAS_SIZE=8
-	export SCALAPACK_SIZE=8
-	unset BUILD_OPENBLAS
-	unset BUILD_SCALAPACK
+	export LAPACK_LIB="$BLASOPT"
     elif [[ "$FC" == "flang" ]] || [[ "$(basename -- $FC | cut -d \- -f 1)" == "nvfortran" ]] ; then
 	export BUILD_MPICH=1
         if [[ "$FC" == "flang" ]]; then
diff --git a/travis/nwchem.bashrc b/travis/nwchem.bashrc
index 5052b05b28..060bcb381d 100644
--- a/travis/nwchem.bashrc
+++ b/travis/nwchem.bashrc
@@ -47,10 +47,18 @@ if [[ "$FC" == "nvfortran" ]]; then
 #    export CC=gcc
 fi
 if [[ "$FC" == "ifort" ]]; then
-    source /opt/intel/oneapi/compiler/latest/env/vars.sh
+    case "$os" in
+	Darwin)
+	    IONEAPI_ROOT=~/apps/oneapi
+	    ;;
+	Linux)	
+	    IONEAPI_ROOT=/opt/intel/oneapi
+	    ;;		
+    esac			
+    source "$IONEAPI_ROOT"/compiler/latest/env/vars.sh
     ifort -V
-    if [ -f /opt/intel/oneapi/mkl/latest/env/vars.sh ] ; then
-	source /opt/intel/oneapi/mkl/latest/env/vars.sh
+    if [ -f "$IONEAPI_ROOT"/mkl/latest/env/vars.sh ] ; then
+	source "$IONEAPI_ROOT"/mkl/latest/env/vars.sh
     fi
 fi
 if [[ "$MPI_IMPL" == "intel" ]]; then